2 * Copyright (C) 2009 Nokia Corporation
3 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
18 #define DSS_SUBSYS_NAME "DSI"
20 #include <linux/kernel.h>
21 #include <linux/mfd/syscon.h>
22 #include <linux/regmap.h>
24 #include <linux/clk.h>
25 #include <linux/device.h>
26 #include <linux/err.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/mutex.h>
30 #include <linux/module.h>
31 #include <linux/semaphore.h>
32 #include <linux/seq_file.h>
33 #include <linux/platform_device.h>
34 #include <linux/regulator/consumer.h>
35 #include <linux/wait.h>
36 #include <linux/workqueue.h>
37 #include <linux/sched.h>
38 #include <linux/slab.h>
39 #include <linux/debugfs.h>
40 #include <linux/pm_runtime.h>
42 #include <linux/of_graph.h>
43 #include <linux/of_platform.h>
44 #include <linux/component.h>
45 #include <linux/sys_soc.h>
47 #include <video/mipi_display.h>
52 #define DSI_CATCH_MISSING_TE
54 struct dsi_reg { u16 module; u16 idx; };
56 #define DSI_REG(mod, idx) ((const struct dsi_reg) { mod, idx })
58 /* DSI Protocol Engine */
61 #define DSI_PROTO_SZ 0x200
63 #define DSI_REVISION DSI_REG(DSI_PROTO, 0x0000)
64 #define DSI_SYSCONFIG DSI_REG(DSI_PROTO, 0x0010)
65 #define DSI_SYSSTATUS DSI_REG(DSI_PROTO, 0x0014)
66 #define DSI_IRQSTATUS DSI_REG(DSI_PROTO, 0x0018)
67 #define DSI_IRQENABLE DSI_REG(DSI_PROTO, 0x001C)
68 #define DSI_CTRL DSI_REG(DSI_PROTO, 0x0040)
69 #define DSI_GNQ DSI_REG(DSI_PROTO, 0x0044)
70 #define DSI_COMPLEXIO_CFG1 DSI_REG(DSI_PROTO, 0x0048)
71 #define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(DSI_PROTO, 0x004C)
72 #define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(DSI_PROTO, 0x0050)
73 #define DSI_CLK_CTRL DSI_REG(DSI_PROTO, 0x0054)
74 #define DSI_TIMING1 DSI_REG(DSI_PROTO, 0x0058)
75 #define DSI_TIMING2 DSI_REG(DSI_PROTO, 0x005C)
76 #define DSI_VM_TIMING1 DSI_REG(DSI_PROTO, 0x0060)
77 #define DSI_VM_TIMING2 DSI_REG(DSI_PROTO, 0x0064)
78 #define DSI_VM_TIMING3 DSI_REG(DSI_PROTO, 0x0068)
79 #define DSI_CLK_TIMING DSI_REG(DSI_PROTO, 0x006C)
80 #define DSI_TX_FIFO_VC_SIZE DSI_REG(DSI_PROTO, 0x0070)
81 #define DSI_RX_FIFO_VC_SIZE DSI_REG(DSI_PROTO, 0x0074)
82 #define DSI_COMPLEXIO_CFG2 DSI_REG(DSI_PROTO, 0x0078)
83 #define DSI_RX_FIFO_VC_FULLNESS DSI_REG(DSI_PROTO, 0x007C)
84 #define DSI_VM_TIMING4 DSI_REG(DSI_PROTO, 0x0080)
85 #define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(DSI_PROTO, 0x0084)
86 #define DSI_VM_TIMING5 DSI_REG(DSI_PROTO, 0x0088)
87 #define DSI_VM_TIMING6 DSI_REG(DSI_PROTO, 0x008C)
88 #define DSI_VM_TIMING7 DSI_REG(DSI_PROTO, 0x0090)
89 #define DSI_STOPCLK_TIMING DSI_REG(DSI_PROTO, 0x0094)
90 #define DSI_VC_CTRL(n) DSI_REG(DSI_PROTO, 0x0100 + (n * 0x20))
91 #define DSI_VC_TE(n) DSI_REG(DSI_PROTO, 0x0104 + (n * 0x20))
92 #define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(DSI_PROTO, 0x0108 + (n * 0x20))
93 #define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(DSI_PROTO, 0x010C + (n * 0x20))
94 #define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(DSI_PROTO, 0x0110 + (n * 0x20))
95 #define DSI_VC_IRQSTATUS(n) DSI_REG(DSI_PROTO, 0x0118 + (n * 0x20))
96 #define DSI_VC_IRQENABLE(n) DSI_REG(DSI_PROTO, 0x011C + (n * 0x20))
101 #define DSI_PHY_OFFSET 0x200
102 #define DSI_PHY_SZ 0x40
104 #define DSI_DSIPHY_CFG0 DSI_REG(DSI_PHY, 0x0000)
105 #define DSI_DSIPHY_CFG1 DSI_REG(DSI_PHY, 0x0004)
106 #define DSI_DSIPHY_CFG2 DSI_REG(DSI_PHY, 0x0008)
107 #define DSI_DSIPHY_CFG5 DSI_REG(DSI_PHY, 0x0014)
108 #define DSI_DSIPHY_CFG10 DSI_REG(DSI_PHY, 0x0028)
110 /* DSI_PLL_CTRL_SCP */
113 #define DSI_PLL_OFFSET 0x300
114 #define DSI_PLL_SZ 0x20
116 #define DSI_PLL_CONTROL DSI_REG(DSI_PLL, 0x0000)
117 #define DSI_PLL_STATUS DSI_REG(DSI_PLL, 0x0004)
118 #define DSI_PLL_GO DSI_REG(DSI_PLL, 0x0008)
119 #define DSI_PLL_CONFIGURATION1 DSI_REG(DSI_PLL, 0x000C)
120 #define DSI_PLL_CONFIGURATION2 DSI_REG(DSI_PLL, 0x0010)
122 #define REG_GET(dsi, idx, start, end) \
123 FLD_GET(dsi_read_reg(dsi, idx), start, end)
125 #define REG_FLD_MOD(dsi, idx, val, start, end) \
126 dsi_write_reg(dsi, idx, FLD_MOD(dsi_read_reg(dsi, idx), val, start, end))
128 /* Global interrupts */
129 #define DSI_IRQ_VC0 (1 << 0)
130 #define DSI_IRQ_VC1 (1 << 1)
131 #define DSI_IRQ_VC2 (1 << 2)
132 #define DSI_IRQ_VC3 (1 << 3)
133 #define DSI_IRQ_WAKEUP (1 << 4)
134 #define DSI_IRQ_RESYNC (1 << 5)
135 #define DSI_IRQ_PLL_LOCK (1 << 7)
136 #define DSI_IRQ_PLL_UNLOCK (1 << 8)
137 #define DSI_IRQ_PLL_RECALL (1 << 9)
138 #define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
139 #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
140 #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
141 #define DSI_IRQ_TE_TRIGGER (1 << 16)
142 #define DSI_IRQ_ACK_TRIGGER (1 << 17)
143 #define DSI_IRQ_SYNC_LOST (1 << 18)
144 #define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
145 #define DSI_IRQ_TA_TIMEOUT (1 << 20)
146 #define DSI_IRQ_ERROR_MASK \
147 (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
149 #define DSI_IRQ_CHANNEL_MASK 0xf
151 /* Virtual channel interrupts */
152 #define DSI_VC_IRQ_CS (1 << 0)
153 #define DSI_VC_IRQ_ECC_CORR (1 << 1)
154 #define DSI_VC_IRQ_PACKET_SENT (1 << 2)
155 #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
156 #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
157 #define DSI_VC_IRQ_BTA (1 << 5)
158 #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
159 #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
160 #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
161 #define DSI_VC_IRQ_ERROR_MASK \
162 (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
163 DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
164 DSI_VC_IRQ_FIFO_TX_UDF)
166 /* ComplexIO interrupts */
167 #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
168 #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
169 #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
170 #define DSI_CIO_IRQ_ERRSYNCESC4 (1 << 3)
171 #define DSI_CIO_IRQ_ERRSYNCESC5 (1 << 4)
172 #define DSI_CIO_IRQ_ERRESC1 (1 << 5)
173 #define DSI_CIO_IRQ_ERRESC2 (1 << 6)
174 #define DSI_CIO_IRQ_ERRESC3 (1 << 7)
175 #define DSI_CIO_IRQ_ERRESC4 (1 << 8)
176 #define DSI_CIO_IRQ_ERRESC5 (1 << 9)
177 #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
178 #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
179 #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
180 #define DSI_CIO_IRQ_ERRCONTROL4 (1 << 13)
181 #define DSI_CIO_IRQ_ERRCONTROL5 (1 << 14)
182 #define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
183 #define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
184 #define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
185 #define DSI_CIO_IRQ_STATEULPS4 (1 << 18)
186 #define DSI_CIO_IRQ_STATEULPS5 (1 << 19)
187 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
188 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
189 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
190 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
191 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
192 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
193 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_4 (1 << 26)
194 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_4 (1 << 27)
195 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_5 (1 << 28)
196 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_5 (1 << 29)
197 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
198 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
199 #define DSI_CIO_IRQ_ERROR_MASK \
200 (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
201 DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRSYNCESC4 | \
202 DSI_CIO_IRQ_ERRSYNCESC5 | \
203 DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
204 DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRESC4 | \
205 DSI_CIO_IRQ_ERRESC5 | \
206 DSI_CIO_IRQ_ERRCONTROL1 | DSI_CIO_IRQ_ERRCONTROL2 | \
207 DSI_CIO_IRQ_ERRCONTROL3 | DSI_CIO_IRQ_ERRCONTROL4 | \
208 DSI_CIO_IRQ_ERRCONTROL5 | \
209 DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
210 DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
211 DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3 | \
212 DSI_CIO_IRQ_ERRCONTENTIONLP0_4 | DSI_CIO_IRQ_ERRCONTENTIONLP1_4 | \
213 DSI_CIO_IRQ_ERRCONTENTIONLP0_5 | DSI_CIO_IRQ_ERRCONTENTIONLP1_5)
215 typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
218 static int dsi_display_init_dispc(struct dsi_data *dsi);
219 static void dsi_display_uninit_dispc(struct dsi_data *dsi);
221 static int dsi_vc_send_null(struct dsi_data *dsi, int channel);
223 /* DSI PLL HSDIV indices */
224 #define HSDIV_DISPC 0
227 #define DSI_MAX_NR_ISRS 2
228 #define DSI_MAX_NR_LANES 5
236 enum dsi_lane_function {
245 struct dsi_lane_config {
246 enum dsi_lane_function function;
250 struct dsi_isr_data {
258 DSI_FIFO_SIZE_32 = 1,
259 DSI_FIFO_SIZE_64 = 2,
260 DSI_FIFO_SIZE_96 = 3,
261 DSI_FIFO_SIZE_128 = 4,
265 DSI_VC_SOURCE_L4 = 0,
269 struct dsi_irq_stats {
270 unsigned long last_reset;
271 unsigned int irq_count;
272 unsigned int dsi_irqs[32];
273 unsigned int vc_irqs[4][32];
274 unsigned int cio_irqs[32];
277 struct dsi_isr_tables {
278 struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
279 struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
280 struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
283 struct dsi_clk_calc_ctx {
284 struct dsi_data *dsi;
289 const struct omap_dss_dsi_config *config;
291 unsigned long req_pck_min, req_pck_nom, req_pck_max;
295 struct dss_pll_clock_info dsi_cinfo;
296 struct dispc_clock_info dispc_cinfo;
299 struct omap_dss_dsi_videomode_timings dsi_vm;
302 struct dsi_lp_clock_info {
303 unsigned long lp_clk;
307 struct dsi_module_id_data {
313 DSI_QUIRK_PLL_PWR_BUG = (1 << 0), /* DSI-PLL power command 0x3 is not working */
314 DSI_QUIRK_DCS_CMD_CONFIG_VC = (1 << 1),
315 DSI_QUIRK_VC_OCP_WIDTH = (1 << 2),
316 DSI_QUIRK_REVERSE_TXCLKESC = (1 << 3),
317 DSI_QUIRK_GNQ = (1 << 4),
318 DSI_QUIRK_PHY_DCC = (1 << 5),
322 enum dsi_model model;
323 const struct dss_pll_hw *pll_hw;
324 const struct dsi_module_id_data *modules;
325 unsigned int max_fck_freq;
326 unsigned int max_pll_lpdiv;
327 enum dsi_quirks quirks;
332 void __iomem *proto_base;
333 void __iomem *phy_base;
334 void __iomem *pll_base;
336 const struct dsi_of_data *data;
344 struct regmap *syscon;
345 struct dss_device *dss;
347 struct dispc_clock_info user_dispc_cinfo;
348 struct dss_pll_clock_info user_dsi_cinfo;
350 struct dsi_lp_clock_info user_lp_cinfo;
351 struct dsi_lp_clock_info current_lp_cinfo;
355 bool vdds_dsi_enabled;
356 struct regulator *vdds_dsi_reg;
359 enum dsi_vc_source source;
360 struct omap_dss_device *dssdev;
361 enum fifo_size tx_fifo_size;
362 enum fifo_size rx_fifo_size;
367 struct semaphore bus_lock;
370 struct dsi_isr_tables isr_tables;
371 /* space for a copy used by the interrupt handler */
372 struct dsi_isr_tables isr_tables_copy;
375 #ifdef DSI_PERF_MEASURE
376 unsigned int update_bytes;
382 void (*framedone_callback)(int, void *);
383 void *framedone_data;
385 struct delayed_work framedone_timeout_work;
387 #ifdef DSI_CATCH_MISSING_TE
388 struct timer_list te_timer;
391 unsigned long cache_req_pck;
392 unsigned long cache_clk_freq;
393 struct dss_pll_clock_info cache_cinfo;
396 spinlock_t errors_lock;
397 #ifdef DSI_PERF_MEASURE
398 ktime_t perf_setup_time;
399 ktime_t perf_start_time;
404 struct dss_debugfs_entry *irqs;
405 struct dss_debugfs_entry *regs;
406 struct dss_debugfs_entry *clks;
409 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
410 spinlock_t irq_stats_lock;
411 struct dsi_irq_stats irq_stats;
414 unsigned int num_lanes_supported;
415 unsigned int line_buffer_size;
417 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
418 unsigned int num_lanes_used;
420 unsigned int scp_clk_refcount;
422 struct dss_lcd_mgr_config mgr_config;
424 enum omap_dss_dsi_pixel_format pix_fmt;
425 enum omap_dss_dsi_mode mode;
426 struct omap_dss_dsi_videomode_timings vm_timings;
428 struct omap_dss_device output;
431 struct dsi_packet_sent_handler_data {
432 struct dsi_data *dsi;
433 struct completion *completion;
436 #ifdef DSI_PERF_MEASURE
437 static bool dsi_perf;
438 module_param(dsi_perf, bool, 0644);
441 static inline struct dsi_data *to_dsi_data(struct omap_dss_device *dssdev)
443 return dev_get_drvdata(dssdev->dev);
446 static inline void dsi_write_reg(struct dsi_data *dsi,
447 const struct dsi_reg idx, u32 val)
452 case DSI_PROTO: base = dsi->proto_base; break;
453 case DSI_PHY: base = dsi->phy_base; break;
454 case DSI_PLL: base = dsi->pll_base; break;
458 __raw_writel(val, base + idx.idx);
461 static inline u32 dsi_read_reg(struct dsi_data *dsi, const struct dsi_reg idx)
466 case DSI_PROTO: base = dsi->proto_base; break;
467 case DSI_PHY: base = dsi->phy_base; break;
468 case DSI_PLL: base = dsi->pll_base; break;
472 return __raw_readl(base + idx.idx);
475 static void dsi_bus_lock(struct omap_dss_device *dssdev)
477 struct dsi_data *dsi = to_dsi_data(dssdev);
479 down(&dsi->bus_lock);
482 static void dsi_bus_unlock(struct omap_dss_device *dssdev)
484 struct dsi_data *dsi = to_dsi_data(dssdev);
489 static bool dsi_bus_is_locked(struct dsi_data *dsi)
491 return dsi->bus_lock.count == 0;
494 static void dsi_completion_handler(void *data, u32 mask)
496 complete((struct completion *)data);
499 static inline bool wait_for_bit_change(struct dsi_data *dsi,
500 const struct dsi_reg idx,
501 int bitnum, int value)
503 unsigned long timeout;
507 /* first busyloop to see if the bit changes right away */
510 if (REG_GET(dsi, idx, bitnum, bitnum) == value)
514 /* then loop for 500ms, sleeping for 1ms in between */
515 timeout = jiffies + msecs_to_jiffies(500);
516 while (time_before(jiffies, timeout)) {
517 if (REG_GET(dsi, idx, bitnum, bitnum) == value)
520 wait = ns_to_ktime(1000 * 1000);
521 set_current_state(TASK_UNINTERRUPTIBLE);
522 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
528 static u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
531 case OMAP_DSS_DSI_FMT_RGB888:
532 case OMAP_DSS_DSI_FMT_RGB666:
534 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
536 case OMAP_DSS_DSI_FMT_RGB565:
544 #ifdef DSI_PERF_MEASURE
545 static void dsi_perf_mark_setup(struct dsi_data *dsi)
547 dsi->perf_setup_time = ktime_get();
550 static void dsi_perf_mark_start(struct dsi_data *dsi)
552 dsi->perf_start_time = ktime_get();
555 static void dsi_perf_show(struct dsi_data *dsi, const char *name)
557 ktime_t t, setup_time, trans_time;
559 u32 setup_us, trans_us, total_us;
566 setup_time = ktime_sub(dsi->perf_start_time, dsi->perf_setup_time);
567 setup_us = (u32)ktime_to_us(setup_time);
571 trans_time = ktime_sub(t, dsi->perf_start_time);
572 trans_us = (u32)ktime_to_us(trans_time);
576 total_us = setup_us + trans_us;
578 total_bytes = dsi->update_bytes;
580 pr_info("DSI(%s): %u us + %u us = %u us (%uHz), %u bytes, %u kbytes/sec\n",
585 1000 * 1000 / total_us,
587 total_bytes * 1000 / total_us);
590 static inline void dsi_perf_mark_setup(struct dsi_data *dsi)
594 static inline void dsi_perf_mark_start(struct dsi_data *dsi)
598 static inline void dsi_perf_show(struct dsi_data *dsi, const char *name)
603 static int verbose_irq;
605 static void print_irq_status(u32 status)
610 if (!verbose_irq && (status & ~DSI_IRQ_CHANNEL_MASK) == 0)
613 #define PIS(x) (status & DSI_IRQ_##x) ? (#x " ") : ""
615 pr_debug("DSI IRQ: 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
617 verbose_irq ? PIS(VC0) : "",
618 verbose_irq ? PIS(VC1) : "",
619 verbose_irq ? PIS(VC2) : "",
620 verbose_irq ? PIS(VC3) : "",
637 static void print_irq_status_vc(int channel, u32 status)
642 if (!verbose_irq && (status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
645 #define PIS(x) (status & DSI_VC_IRQ_##x) ? (#x " ") : ""
647 pr_debug("DSI VC(%d) IRQ 0x%x: %s%s%s%s%s%s%s%s%s\n",
653 verbose_irq ? PIS(PACKET_SENT) : "",
658 PIS(PP_BUSY_CHANGE));
662 static void print_irq_status_cio(u32 status)
667 #define PIS(x) (status & DSI_CIO_IRQ_##x) ? (#x " ") : ""
669 pr_debug("DSI CIO IRQ 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
683 PIS(ERRCONTENTIONLP0_1),
684 PIS(ERRCONTENTIONLP1_1),
685 PIS(ERRCONTENTIONLP0_2),
686 PIS(ERRCONTENTIONLP1_2),
687 PIS(ERRCONTENTIONLP0_3),
688 PIS(ERRCONTENTIONLP1_3),
689 PIS(ULPSACTIVENOT_ALL0),
690 PIS(ULPSACTIVENOT_ALL1));
694 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
695 static void dsi_collect_irq_stats(struct dsi_data *dsi, u32 irqstatus,
696 u32 *vcstatus, u32 ciostatus)
700 spin_lock(&dsi->irq_stats_lock);
702 dsi->irq_stats.irq_count++;
703 dss_collect_irq_stats(irqstatus, dsi->irq_stats.dsi_irqs);
705 for (i = 0; i < 4; ++i)
706 dss_collect_irq_stats(vcstatus[i], dsi->irq_stats.vc_irqs[i]);
708 dss_collect_irq_stats(ciostatus, dsi->irq_stats.cio_irqs);
710 spin_unlock(&dsi->irq_stats_lock);
713 #define dsi_collect_irq_stats(dsi, irqstatus, vcstatus, ciostatus)
716 static int debug_irq;
718 static void dsi_handle_irq_errors(struct dsi_data *dsi, u32 irqstatus,
719 u32 *vcstatus, u32 ciostatus)
723 if (irqstatus & DSI_IRQ_ERROR_MASK) {
724 DSSERR("DSI error, irqstatus %x\n", irqstatus);
725 print_irq_status(irqstatus);
726 spin_lock(&dsi->errors_lock);
727 dsi->errors |= irqstatus & DSI_IRQ_ERROR_MASK;
728 spin_unlock(&dsi->errors_lock);
729 } else if (debug_irq) {
730 print_irq_status(irqstatus);
733 for (i = 0; i < 4; ++i) {
734 if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
735 DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
737 print_irq_status_vc(i, vcstatus[i]);
738 } else if (debug_irq) {
739 print_irq_status_vc(i, vcstatus[i]);
743 if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
744 DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
745 print_irq_status_cio(ciostatus);
746 } else if (debug_irq) {
747 print_irq_status_cio(ciostatus);
751 static void dsi_call_isrs(struct dsi_isr_data *isr_array,
752 unsigned int isr_array_size, u32 irqstatus)
754 struct dsi_isr_data *isr_data;
757 for (i = 0; i < isr_array_size; i++) {
758 isr_data = &isr_array[i];
759 if (isr_data->isr && isr_data->mask & irqstatus)
760 isr_data->isr(isr_data->arg, irqstatus);
764 static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
765 u32 irqstatus, u32 *vcstatus, u32 ciostatus)
769 dsi_call_isrs(isr_tables->isr_table,
770 ARRAY_SIZE(isr_tables->isr_table),
773 for (i = 0; i < 4; ++i) {
774 if (vcstatus[i] == 0)
776 dsi_call_isrs(isr_tables->isr_table_vc[i],
777 ARRAY_SIZE(isr_tables->isr_table_vc[i]),
782 dsi_call_isrs(isr_tables->isr_table_cio,
783 ARRAY_SIZE(isr_tables->isr_table_cio),
787 static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
789 struct dsi_data *dsi = arg;
790 u32 irqstatus, vcstatus[4], ciostatus;
793 if (!dsi->is_enabled)
796 spin_lock(&dsi->irq_lock);
798 irqstatus = dsi_read_reg(dsi, DSI_IRQSTATUS);
800 /* IRQ is not for us */
802 spin_unlock(&dsi->irq_lock);
806 dsi_write_reg(dsi, DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
807 /* flush posted write */
808 dsi_read_reg(dsi, DSI_IRQSTATUS);
810 for (i = 0; i < 4; ++i) {
811 if ((irqstatus & (1 << i)) == 0) {
816 vcstatus[i] = dsi_read_reg(dsi, DSI_VC_IRQSTATUS(i));
818 dsi_write_reg(dsi, DSI_VC_IRQSTATUS(i), vcstatus[i]);
819 /* flush posted write */
820 dsi_read_reg(dsi, DSI_VC_IRQSTATUS(i));
823 if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
824 ciostatus = dsi_read_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS);
826 dsi_write_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
827 /* flush posted write */
828 dsi_read_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS);
833 #ifdef DSI_CATCH_MISSING_TE
834 if (irqstatus & DSI_IRQ_TE_TRIGGER)
835 del_timer(&dsi->te_timer);
838 /* make a copy and unlock, so that isrs can unregister
840 memcpy(&dsi->isr_tables_copy, &dsi->isr_tables,
841 sizeof(dsi->isr_tables));
843 spin_unlock(&dsi->irq_lock);
845 dsi_handle_isrs(&dsi->isr_tables_copy, irqstatus, vcstatus, ciostatus);
847 dsi_handle_irq_errors(dsi, irqstatus, vcstatus, ciostatus);
849 dsi_collect_irq_stats(dsi, irqstatus, vcstatus, ciostatus);
854 /* dsi->irq_lock has to be locked by the caller */
855 static void _omap_dsi_configure_irqs(struct dsi_data *dsi,
856 struct dsi_isr_data *isr_array,
857 unsigned int isr_array_size,
859 const struct dsi_reg enable_reg,
860 const struct dsi_reg status_reg)
862 struct dsi_isr_data *isr_data;
869 for (i = 0; i < isr_array_size; i++) {
870 isr_data = &isr_array[i];
872 if (isr_data->isr == NULL)
875 mask |= isr_data->mask;
878 old_mask = dsi_read_reg(dsi, enable_reg);
879 /* clear the irqstatus for newly enabled irqs */
880 dsi_write_reg(dsi, status_reg, (mask ^ old_mask) & mask);
881 dsi_write_reg(dsi, enable_reg, mask);
883 /* flush posted writes */
884 dsi_read_reg(dsi, enable_reg);
885 dsi_read_reg(dsi, status_reg);
888 /* dsi->irq_lock has to be locked by the caller */
889 static void _omap_dsi_set_irqs(struct dsi_data *dsi)
891 u32 mask = DSI_IRQ_ERROR_MASK;
892 #ifdef DSI_CATCH_MISSING_TE
893 mask |= DSI_IRQ_TE_TRIGGER;
895 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table,
896 ARRAY_SIZE(dsi->isr_tables.isr_table), mask,
897 DSI_IRQENABLE, DSI_IRQSTATUS);
900 /* dsi->irq_lock has to be locked by the caller */
901 static void _omap_dsi_set_irqs_vc(struct dsi_data *dsi, int vc)
903 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table_vc[vc],
904 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[vc]),
905 DSI_VC_IRQ_ERROR_MASK,
906 DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
909 /* dsi->irq_lock has to be locked by the caller */
910 static void _omap_dsi_set_irqs_cio(struct dsi_data *dsi)
912 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table_cio,
913 ARRAY_SIZE(dsi->isr_tables.isr_table_cio),
914 DSI_CIO_IRQ_ERROR_MASK,
915 DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
918 static void _dsi_initialize_irq(struct dsi_data *dsi)
923 spin_lock_irqsave(&dsi->irq_lock, flags);
925 memset(&dsi->isr_tables, 0, sizeof(dsi->isr_tables));
927 _omap_dsi_set_irqs(dsi);
928 for (vc = 0; vc < 4; ++vc)
929 _omap_dsi_set_irqs_vc(dsi, vc);
930 _omap_dsi_set_irqs_cio(dsi);
932 spin_unlock_irqrestore(&dsi->irq_lock, flags);
935 static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
936 struct dsi_isr_data *isr_array, unsigned int isr_array_size)
938 struct dsi_isr_data *isr_data;
944 /* check for duplicate entry and find a free slot */
946 for (i = 0; i < isr_array_size; i++) {
947 isr_data = &isr_array[i];
949 if (isr_data->isr == isr && isr_data->arg == arg &&
950 isr_data->mask == mask) {
954 if (isr_data->isr == NULL && free_idx == -1)
961 isr_data = &isr_array[free_idx];
964 isr_data->mask = mask;
969 static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
970 struct dsi_isr_data *isr_array, unsigned int isr_array_size)
972 struct dsi_isr_data *isr_data;
975 for (i = 0; i < isr_array_size; i++) {
976 isr_data = &isr_array[i];
977 if (isr_data->isr != isr || isr_data->arg != arg ||
978 isr_data->mask != mask)
981 isr_data->isr = NULL;
982 isr_data->arg = NULL;
991 static int dsi_register_isr(struct dsi_data *dsi, omap_dsi_isr_t isr,
997 spin_lock_irqsave(&dsi->irq_lock, flags);
999 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table,
1000 ARRAY_SIZE(dsi->isr_tables.isr_table));
1003 _omap_dsi_set_irqs(dsi);
1005 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1010 static int dsi_unregister_isr(struct dsi_data *dsi, omap_dsi_isr_t isr,
1011 void *arg, u32 mask)
1013 unsigned long flags;
1016 spin_lock_irqsave(&dsi->irq_lock, flags);
1018 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table,
1019 ARRAY_SIZE(dsi->isr_tables.isr_table));
1022 _omap_dsi_set_irqs(dsi);
1024 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1029 static int dsi_register_isr_vc(struct dsi_data *dsi, int channel,
1030 omap_dsi_isr_t isr, void *arg, u32 mask)
1032 unsigned long flags;
1035 spin_lock_irqsave(&dsi->irq_lock, flags);
1037 r = _dsi_register_isr(isr, arg, mask,
1038 dsi->isr_tables.isr_table_vc[channel],
1039 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1042 _omap_dsi_set_irqs_vc(dsi, channel);
1044 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1049 static int dsi_unregister_isr_vc(struct dsi_data *dsi, int channel,
1050 omap_dsi_isr_t isr, void *arg, u32 mask)
1052 unsigned long flags;
1055 spin_lock_irqsave(&dsi->irq_lock, flags);
1057 r = _dsi_unregister_isr(isr, arg, mask,
1058 dsi->isr_tables.isr_table_vc[channel],
1059 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1062 _omap_dsi_set_irqs_vc(dsi, channel);
1064 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1069 static int dsi_register_isr_cio(struct dsi_data *dsi, omap_dsi_isr_t isr,
1070 void *arg, u32 mask)
1072 unsigned long flags;
1075 spin_lock_irqsave(&dsi->irq_lock, flags);
1077 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1078 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1081 _omap_dsi_set_irqs_cio(dsi);
1083 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1088 static int dsi_unregister_isr_cio(struct dsi_data *dsi, omap_dsi_isr_t isr,
1089 void *arg, u32 mask)
1091 unsigned long flags;
1094 spin_lock_irqsave(&dsi->irq_lock, flags);
1096 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1097 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1100 _omap_dsi_set_irqs_cio(dsi);
1102 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1107 static u32 dsi_get_errors(struct dsi_data *dsi)
1109 unsigned long flags;
1112 spin_lock_irqsave(&dsi->errors_lock, flags);
1115 spin_unlock_irqrestore(&dsi->errors_lock, flags);
1119 static int dsi_runtime_get(struct dsi_data *dsi)
1123 DSSDBG("dsi_runtime_get\n");
1125 r = pm_runtime_get_sync(dsi->dev);
1127 return r < 0 ? r : 0;
1130 static void dsi_runtime_put(struct dsi_data *dsi)
1134 DSSDBG("dsi_runtime_put\n");
1136 r = pm_runtime_put_sync(dsi->dev);
1137 WARN_ON(r < 0 && r != -ENOSYS);
1140 static void _dsi_print_reset_status(struct dsi_data *dsi)
1145 /* A dummy read using the SCP interface to any DSIPHY register is
1146 * required after DSIPHY reset to complete the reset of the DSI complex
1148 l = dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
1150 if (dsi->data->quirks & DSI_QUIRK_REVERSE_TXCLKESC) {
1160 #define DSI_FLD_GET(fld, start, end)\
1161 FLD_GET(dsi_read_reg(dsi, DSI_##fld), start, end)
1163 pr_debug("DSI resets: PLL (%d) CIO (%d) PHY (%x%x%x, %d, %d, %d)\n",
1164 DSI_FLD_GET(PLL_STATUS, 0, 0),
1165 DSI_FLD_GET(COMPLEXIO_CFG1, 29, 29),
1166 DSI_FLD_GET(DSIPHY_CFG5, b0, b0),
1167 DSI_FLD_GET(DSIPHY_CFG5, b1, b1),
1168 DSI_FLD_GET(DSIPHY_CFG5, b2, b2),
1169 DSI_FLD_GET(DSIPHY_CFG5, 29, 29),
1170 DSI_FLD_GET(DSIPHY_CFG5, 30, 30),
1171 DSI_FLD_GET(DSIPHY_CFG5, 31, 31));
1176 static inline int dsi_if_enable(struct dsi_data *dsi, bool enable)
1178 DSSDBG("dsi_if_enable(%d)\n", enable);
1180 enable = enable ? 1 : 0;
1181 REG_FLD_MOD(dsi, DSI_CTRL, enable, 0, 0); /* IF_EN */
1183 if (!wait_for_bit_change(dsi, DSI_CTRL, 0, enable)) {
1184 DSSERR("Failed to set dsi_if_enable to %d\n", enable);
1191 static unsigned long dsi_get_pll_hsdiv_dispc_rate(struct dsi_data *dsi)
1193 return dsi->pll.cinfo.clkout[HSDIV_DISPC];
1196 static unsigned long dsi_get_pll_hsdiv_dsi_rate(struct dsi_data *dsi)
1198 return dsi->pll.cinfo.clkout[HSDIV_DSI];
1201 static unsigned long dsi_get_txbyteclkhs(struct dsi_data *dsi)
1203 return dsi->pll.cinfo.clkdco / 16;
1206 static unsigned long dsi_fclk_rate(struct dsi_data *dsi)
1209 enum dss_clk_source source;
1211 source = dss_get_dsi_clk_source(dsi->dss, dsi->module_id);
1212 if (source == DSS_CLK_SRC_FCK) {
1213 /* DSI FCLK source is DSS_CLK_FCK */
1214 r = clk_get_rate(dsi->dss_clk);
1216 /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
1217 r = dsi_get_pll_hsdiv_dsi_rate(dsi);
1223 static int dsi_lp_clock_calc(unsigned long dsi_fclk,
1224 unsigned long lp_clk_min, unsigned long lp_clk_max,
1225 struct dsi_lp_clock_info *lp_cinfo)
1227 unsigned int lp_clk_div;
1228 unsigned long lp_clk;
1230 lp_clk_div = DIV_ROUND_UP(dsi_fclk, lp_clk_max * 2);
1231 lp_clk = dsi_fclk / 2 / lp_clk_div;
1233 if (lp_clk < lp_clk_min || lp_clk > lp_clk_max)
1236 lp_cinfo->lp_clk_div = lp_clk_div;
1237 lp_cinfo->lp_clk = lp_clk;
1242 static int dsi_set_lp_clk_divisor(struct dsi_data *dsi)
1244 unsigned long dsi_fclk;
1245 unsigned int lp_clk_div;
1246 unsigned long lp_clk;
1247 unsigned int lpdiv_max = dsi->data->max_pll_lpdiv;
1250 lp_clk_div = dsi->user_lp_cinfo.lp_clk_div;
1252 if (lp_clk_div == 0 || lp_clk_div > lpdiv_max)
1255 dsi_fclk = dsi_fclk_rate(dsi);
1257 lp_clk = dsi_fclk / 2 / lp_clk_div;
1259 DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
1260 dsi->current_lp_cinfo.lp_clk = lp_clk;
1261 dsi->current_lp_cinfo.lp_clk_div = lp_clk_div;
1263 /* LP_CLK_DIVISOR */
1264 REG_FLD_MOD(dsi, DSI_CLK_CTRL, lp_clk_div, 12, 0);
1266 /* LP_RX_SYNCHRO_ENABLE */
1267 REG_FLD_MOD(dsi, DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0, 21, 21);
1272 static void dsi_enable_scp_clk(struct dsi_data *dsi)
1274 if (dsi->scp_clk_refcount++ == 0)
1275 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 1, 14, 14); /* CIO_CLK_ICG */
1278 static void dsi_disable_scp_clk(struct dsi_data *dsi)
1280 WARN_ON(dsi->scp_clk_refcount == 0);
1281 if (--dsi->scp_clk_refcount == 0)
1282 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 14, 14); /* CIO_CLK_ICG */
1285 enum dsi_pll_power_state {
1286 DSI_PLL_POWER_OFF = 0x0,
1287 DSI_PLL_POWER_ON_HSCLK = 0x1,
1288 DSI_PLL_POWER_ON_ALL = 0x2,
1289 DSI_PLL_POWER_ON_DIV = 0x3,
1292 static int dsi_pll_power(struct dsi_data *dsi, enum dsi_pll_power_state state)
1296 /* DSI-PLL power command 0x3 is not working */
1297 if ((dsi->data->quirks & DSI_QUIRK_PLL_PWR_BUG) &&
1298 state == DSI_PLL_POWER_ON_DIV)
1299 state = DSI_PLL_POWER_ON_ALL;
1302 REG_FLD_MOD(dsi, DSI_CLK_CTRL, state, 31, 30);
1304 /* PLL_PWR_STATUS */
1305 while (FLD_GET(dsi_read_reg(dsi, DSI_CLK_CTRL), 29, 28) != state) {
1307 DSSERR("Failed to set DSI PLL power mode to %d\n",
1318 static void dsi_pll_calc_dsi_fck(struct dsi_data *dsi,
1319 struct dss_pll_clock_info *cinfo)
1321 unsigned long max_dsi_fck;
1323 max_dsi_fck = dsi->data->max_fck_freq;
1325 cinfo->mX[HSDIV_DSI] = DIV_ROUND_UP(cinfo->clkdco, max_dsi_fck);
1326 cinfo->clkout[HSDIV_DSI] = cinfo->clkdco / cinfo->mX[HSDIV_DSI];
1329 static int dsi_pll_enable(struct dss_pll *pll)
1331 struct dsi_data *dsi = container_of(pll, struct dsi_data, pll);
1334 DSSDBG("PLL init\n");
1336 r = dsi_runtime_get(dsi);
1341 * Note: SCP CLK is not required on OMAP3, but it is required on OMAP4.
1343 dsi_enable_scp_clk(dsi);
1345 r = regulator_enable(dsi->vdds_dsi_reg);
1349 /* XXX PLL does not come out of reset without this... */
1350 dispc_pck_free_enable(dsi->dss->dispc, 1);
1352 if (!wait_for_bit_change(dsi, DSI_PLL_STATUS, 0, 1)) {
1353 DSSERR("PLL not coming out of reset.\n");
1355 dispc_pck_free_enable(dsi->dss->dispc, 0);
1359 /* XXX ... but if left on, we get problems when planes do not
1360 * fill the whole display. No idea about this */
1361 dispc_pck_free_enable(dsi->dss->dispc, 0);
1363 r = dsi_pll_power(dsi, DSI_PLL_POWER_ON_ALL);
1368 DSSDBG("PLL init done\n");
1372 regulator_disable(dsi->vdds_dsi_reg);
1374 dsi_disable_scp_clk(dsi);
1375 dsi_runtime_put(dsi);
1379 static void dsi_pll_disable(struct dss_pll *pll)
1381 struct dsi_data *dsi = container_of(pll, struct dsi_data, pll);
1383 dsi_pll_power(dsi, DSI_PLL_POWER_OFF);
1385 regulator_disable(dsi->vdds_dsi_reg);
1387 dsi_disable_scp_clk(dsi);
1388 dsi_runtime_put(dsi);
1390 DSSDBG("PLL disable done\n");
1393 static int dsi_dump_dsi_clocks(struct seq_file *s, void *p)
1395 struct dsi_data *dsi = s->private;
1396 struct dss_pll_clock_info *cinfo = &dsi->pll.cinfo;
1397 enum dss_clk_source dispc_clk_src, dsi_clk_src;
1398 int dsi_module = dsi->module_id;
1399 struct dss_pll *pll = &dsi->pll;
1401 dispc_clk_src = dss_get_dispc_clk_source(dsi->dss);
1402 dsi_clk_src = dss_get_dsi_clk_source(dsi->dss, dsi_module);
1404 if (dsi_runtime_get(dsi))
1407 seq_printf(s, "- DSI%d PLL -\n", dsi_module + 1);
1409 seq_printf(s, "dsi pll clkin\t%lu\n", clk_get_rate(pll->clkin));
1411 seq_printf(s, "Fint\t\t%-16lun %u\n", cinfo->fint, cinfo->n);
1413 seq_printf(s, "CLKIN4DDR\t%-16lum %u\n",
1414 cinfo->clkdco, cinfo->m);
1416 seq_printf(s, "DSI_PLL_HSDIV_DISPC (%s)\t%-16lum_dispc %u\t(%s)\n",
1417 dss_get_clk_source_name(dsi_module == 0 ?
1418 DSS_CLK_SRC_PLL1_1 :
1419 DSS_CLK_SRC_PLL2_1),
1420 cinfo->clkout[HSDIV_DISPC],
1421 cinfo->mX[HSDIV_DISPC],
1422 dispc_clk_src == DSS_CLK_SRC_FCK ?
1425 seq_printf(s, "DSI_PLL_HSDIV_DSI (%s)\t%-16lum_dsi %u\t(%s)\n",
1426 dss_get_clk_source_name(dsi_module == 0 ?
1427 DSS_CLK_SRC_PLL1_2 :
1428 DSS_CLK_SRC_PLL2_2),
1429 cinfo->clkout[HSDIV_DSI],
1430 cinfo->mX[HSDIV_DSI],
1431 dsi_clk_src == DSS_CLK_SRC_FCK ?
1434 seq_printf(s, "- DSI%d -\n", dsi_module + 1);
1436 seq_printf(s, "dsi fclk source = %s\n",
1437 dss_get_clk_source_name(dsi_clk_src));
1439 seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate(dsi));
1441 seq_printf(s, "DDR_CLK\t\t%lu\n",
1444 seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs(dsi));
1446 seq_printf(s, "LP_CLK\t\t%lu\n", dsi->current_lp_cinfo.lp_clk);
1448 dsi_runtime_put(dsi);
1453 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
1454 static int dsi_dump_dsi_irqs(struct seq_file *s, void *p)
1456 struct dsi_data *dsi = s->private;
1457 unsigned long flags;
1458 struct dsi_irq_stats stats;
1460 spin_lock_irqsave(&dsi->irq_stats_lock, flags);
1462 stats = dsi->irq_stats;
1463 memset(&dsi->irq_stats, 0, sizeof(dsi->irq_stats));
1464 dsi->irq_stats.last_reset = jiffies;
1466 spin_unlock_irqrestore(&dsi->irq_stats_lock, flags);
1468 seq_printf(s, "period %u ms\n",
1469 jiffies_to_msecs(jiffies - stats.last_reset));
1471 seq_printf(s, "irqs %d\n", stats.irq_count);
1473 seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
1475 seq_printf(s, "-- DSI%d interrupts --\n", dsi->module_id + 1);
1491 PIS(LDO_POWER_GOOD);
1496 seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
1497 stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
1498 stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
1499 stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
1500 stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
1502 seq_printf(s, "-- VC interrupts --\n");
1511 PIS(PP_BUSY_CHANGE);
1515 seq_printf(s, "%-20s %10d\n", #x, \
1516 stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
1518 seq_printf(s, "-- CIO interrupts --\n");
1531 PIS(ERRCONTENTIONLP0_1);
1532 PIS(ERRCONTENTIONLP1_1);
1533 PIS(ERRCONTENTIONLP0_2);
1534 PIS(ERRCONTENTIONLP1_2);
1535 PIS(ERRCONTENTIONLP0_3);
1536 PIS(ERRCONTENTIONLP1_3);
1537 PIS(ULPSACTIVENOT_ALL0);
1538 PIS(ULPSACTIVENOT_ALL1);
1545 static int dsi_dump_dsi_regs(struct seq_file *s, void *p)
1547 struct dsi_data *dsi = s->private;
1549 if (dsi_runtime_get(dsi))
1551 dsi_enable_scp_clk(dsi);
1553 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(dsi, r))
1554 DUMPREG(DSI_REVISION);
1555 DUMPREG(DSI_SYSCONFIG);
1556 DUMPREG(DSI_SYSSTATUS);
1557 DUMPREG(DSI_IRQSTATUS);
1558 DUMPREG(DSI_IRQENABLE);
1560 DUMPREG(DSI_COMPLEXIO_CFG1);
1561 DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
1562 DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
1563 DUMPREG(DSI_CLK_CTRL);
1564 DUMPREG(DSI_TIMING1);
1565 DUMPREG(DSI_TIMING2);
1566 DUMPREG(DSI_VM_TIMING1);
1567 DUMPREG(DSI_VM_TIMING2);
1568 DUMPREG(DSI_VM_TIMING3);
1569 DUMPREG(DSI_CLK_TIMING);
1570 DUMPREG(DSI_TX_FIFO_VC_SIZE);
1571 DUMPREG(DSI_RX_FIFO_VC_SIZE);
1572 DUMPREG(DSI_COMPLEXIO_CFG2);
1573 DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
1574 DUMPREG(DSI_VM_TIMING4);
1575 DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
1576 DUMPREG(DSI_VM_TIMING5);
1577 DUMPREG(DSI_VM_TIMING6);
1578 DUMPREG(DSI_VM_TIMING7);
1579 DUMPREG(DSI_STOPCLK_TIMING);
1581 DUMPREG(DSI_VC_CTRL(0));
1582 DUMPREG(DSI_VC_TE(0));
1583 DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
1584 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
1585 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
1586 DUMPREG(DSI_VC_IRQSTATUS(0));
1587 DUMPREG(DSI_VC_IRQENABLE(0));
1589 DUMPREG(DSI_VC_CTRL(1));
1590 DUMPREG(DSI_VC_TE(1));
1591 DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
1592 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
1593 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
1594 DUMPREG(DSI_VC_IRQSTATUS(1));
1595 DUMPREG(DSI_VC_IRQENABLE(1));
1597 DUMPREG(DSI_VC_CTRL(2));
1598 DUMPREG(DSI_VC_TE(2));
1599 DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
1600 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
1601 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
1602 DUMPREG(DSI_VC_IRQSTATUS(2));
1603 DUMPREG(DSI_VC_IRQENABLE(2));
1605 DUMPREG(DSI_VC_CTRL(3));
1606 DUMPREG(DSI_VC_TE(3));
1607 DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
1608 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
1609 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
1610 DUMPREG(DSI_VC_IRQSTATUS(3));
1611 DUMPREG(DSI_VC_IRQENABLE(3));
1613 DUMPREG(DSI_DSIPHY_CFG0);
1614 DUMPREG(DSI_DSIPHY_CFG1);
1615 DUMPREG(DSI_DSIPHY_CFG2);
1616 DUMPREG(DSI_DSIPHY_CFG5);
1618 DUMPREG(DSI_PLL_CONTROL);
1619 DUMPREG(DSI_PLL_STATUS);
1620 DUMPREG(DSI_PLL_GO);
1621 DUMPREG(DSI_PLL_CONFIGURATION1);
1622 DUMPREG(DSI_PLL_CONFIGURATION2);
1625 dsi_disable_scp_clk(dsi);
1626 dsi_runtime_put(dsi);
1631 enum dsi_cio_power_state {
1632 DSI_COMPLEXIO_POWER_OFF = 0x0,
1633 DSI_COMPLEXIO_POWER_ON = 0x1,
1634 DSI_COMPLEXIO_POWER_ULPS = 0x2,
1637 static int dsi_cio_power(struct dsi_data *dsi, enum dsi_cio_power_state state)
1642 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG1, state, 28, 27);
1645 while (FLD_GET(dsi_read_reg(dsi, DSI_COMPLEXIO_CFG1),
1648 DSSERR("failed to set complexio power state to "
1658 static unsigned int dsi_get_line_buf_size(struct dsi_data *dsi)
1662 /* line buffer on OMAP3 is 1024 x 24bits */
1663 /* XXX: for some reason using full buffer size causes
1664 * considerable TX slowdown with update sizes that fill the
1666 if (!(dsi->data->quirks & DSI_QUIRK_GNQ))
1669 val = REG_GET(dsi, DSI_GNQ, 14, 12); /* VP1_LINE_BUFFER_SIZE */
1673 return 512 * 3; /* 512x24 bits */
1675 return 682 * 3; /* 682x24 bits */
1677 return 853 * 3; /* 853x24 bits */
1679 return 1024 * 3; /* 1024x24 bits */
1681 return 1194 * 3; /* 1194x24 bits */
1683 return 1365 * 3; /* 1365x24 bits */
1685 return 1920 * 3; /* 1920x24 bits */
1692 static int dsi_set_lane_config(struct dsi_data *dsi)
1694 static const u8 offsets[] = { 0, 4, 8, 12, 16 };
1695 static const enum dsi_lane_function functions[] = {
1705 r = dsi_read_reg(dsi, DSI_COMPLEXIO_CFG1);
1707 for (i = 0; i < dsi->num_lanes_used; ++i) {
1708 unsigned int offset = offsets[i];
1709 unsigned int polarity, lane_number;
1712 for (t = 0; t < dsi->num_lanes_supported; ++t)
1713 if (dsi->lanes[t].function == functions[i])
1716 if (t == dsi->num_lanes_supported)
1720 polarity = dsi->lanes[t].polarity;
1722 r = FLD_MOD(r, lane_number + 1, offset + 2, offset);
1723 r = FLD_MOD(r, polarity, offset + 3, offset + 3);
1726 /* clear the unused lanes */
1727 for (; i < dsi->num_lanes_supported; ++i) {
1728 unsigned int offset = offsets[i];
1730 r = FLD_MOD(r, 0, offset + 2, offset);
1731 r = FLD_MOD(r, 0, offset + 3, offset + 3);
1734 dsi_write_reg(dsi, DSI_COMPLEXIO_CFG1, r);
1739 static inline unsigned int ns2ddr(struct dsi_data *dsi, unsigned int ns)
1741 /* convert time in ns to ddr ticks, rounding up */
1742 unsigned long ddr_clk = dsi->pll.cinfo.clkdco / 4;
1744 return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
1747 static inline unsigned int ddr2ns(struct dsi_data *dsi, unsigned int ddr)
1749 unsigned long ddr_clk = dsi->pll.cinfo.clkdco / 4;
1751 return ddr * 1000 * 1000 / (ddr_clk / 1000);
1754 static void dsi_cio_timings(struct dsi_data *dsi)
1757 u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
1758 u32 tlpx_half, tclk_trail, tclk_zero;
1761 /* calculate timings */
1763 /* 1 * DDR_CLK = 2 * UI */
1765 /* min 40ns + 4*UI max 85ns + 6*UI */
1766 ths_prepare = ns2ddr(dsi, 70) + 2;
1768 /* min 145ns + 10*UI */
1769 ths_prepare_ths_zero = ns2ddr(dsi, 175) + 2;
1771 /* min max(8*UI, 60ns+4*UI) */
1772 ths_trail = ns2ddr(dsi, 60) + 5;
1775 ths_exit = ns2ddr(dsi, 145);
1778 tlpx_half = ns2ddr(dsi, 25);
1781 tclk_trail = ns2ddr(dsi, 60) + 2;
1783 /* min 38ns, max 95ns */
1784 tclk_prepare = ns2ddr(dsi, 65);
1786 /* min tclk-prepare + tclk-zero = 300ns */
1787 tclk_zero = ns2ddr(dsi, 260);
1789 DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
1790 ths_prepare, ddr2ns(dsi, ths_prepare),
1791 ths_prepare_ths_zero, ddr2ns(dsi, ths_prepare_ths_zero));
1792 DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
1793 ths_trail, ddr2ns(dsi, ths_trail),
1794 ths_exit, ddr2ns(dsi, ths_exit));
1796 DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
1797 "tclk_zero %u (%uns)\n",
1798 tlpx_half, ddr2ns(dsi, tlpx_half),
1799 tclk_trail, ddr2ns(dsi, tclk_trail),
1800 tclk_zero, ddr2ns(dsi, tclk_zero));
1801 DSSDBG("tclk_prepare %u (%uns)\n",
1802 tclk_prepare, ddr2ns(dsi, tclk_prepare));
1804 /* program timings */
1806 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
1807 r = FLD_MOD(r, ths_prepare, 31, 24);
1808 r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
1809 r = FLD_MOD(r, ths_trail, 15, 8);
1810 r = FLD_MOD(r, ths_exit, 7, 0);
1811 dsi_write_reg(dsi, DSI_DSIPHY_CFG0, r);
1813 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
1814 r = FLD_MOD(r, tlpx_half, 20, 16);
1815 r = FLD_MOD(r, tclk_trail, 15, 8);
1816 r = FLD_MOD(r, tclk_zero, 7, 0);
1818 if (dsi->data->quirks & DSI_QUIRK_PHY_DCC) {
1819 r = FLD_MOD(r, 0, 21, 21); /* DCCEN = disable */
1820 r = FLD_MOD(r, 1, 22, 22); /* CLKINP_DIVBY2EN = enable */
1821 r = FLD_MOD(r, 1, 23, 23); /* CLKINP_SEL = enable */
1824 dsi_write_reg(dsi, DSI_DSIPHY_CFG1, r);
1826 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG2);
1827 r = FLD_MOD(r, tclk_prepare, 7, 0);
1828 dsi_write_reg(dsi, DSI_DSIPHY_CFG2, r);
1831 /* lane masks have lane 0 at lsb. mask_p for positive lines, n for negative */
1832 static void dsi_cio_enable_lane_override(struct dsi_data *dsi,
1833 unsigned int mask_p,
1834 unsigned int mask_n)
1838 u8 lptxscp_start = dsi->num_lanes_supported == 3 ? 22 : 26;
1842 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1843 unsigned int p = dsi->lanes[i].polarity;
1845 if (mask_p & (1 << i))
1846 l |= 1 << (i * 2 + (p ? 0 : 1));
1848 if (mask_n & (1 << i))
1849 l |= 1 << (i * 2 + (p ? 1 : 0));
1853 * Bits in REGLPTXSCPDAT4TO0DXDY:
1861 /* Set the lane override configuration */
1863 /* REGLPTXSCPDAT4TO0DXDY */
1864 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, l, lptxscp_start, 17);
1866 /* Enable lane override */
1869 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 1, 27, 27);
1872 static void dsi_cio_disable_lane_override(struct dsi_data *dsi)
1874 /* Disable lane override */
1875 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
1876 /* Reset the lane override configuration */
1877 /* REGLPTXSCPDAT4TO0DXDY */
1878 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 0, 22, 17);
1881 static int dsi_cio_wait_tx_clk_esc_reset(struct dsi_data *dsi)
1884 bool in_use[DSI_MAX_NR_LANES];
1885 static const u8 offsets_old[] = { 28, 27, 26 };
1886 static const u8 offsets_new[] = { 24, 25, 26, 27, 28 };
1889 if (dsi->data->quirks & DSI_QUIRK_REVERSE_TXCLKESC)
1890 offsets = offsets_old;
1892 offsets = offsets_new;
1894 for (i = 0; i < dsi->num_lanes_supported; ++i)
1895 in_use[i] = dsi->lanes[i].function != DSI_LANE_UNUSED;
1902 l = dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
1905 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1906 if (!in_use[i] || (l & (1 << offsets[i])))
1910 if (ok == dsi->num_lanes_supported)
1914 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1915 if (!in_use[i] || (l & (1 << offsets[i])))
1918 DSSERR("CIO TXCLKESC%d domain not coming " \
1919 "out of reset\n", i);
1928 /* return bitmask of enabled lanes, lane0 being the lsb */
1929 static unsigned int dsi_get_lane_mask(struct dsi_data *dsi)
1931 unsigned int mask = 0;
1934 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1935 if (dsi->lanes[i].function != DSI_LANE_UNUSED)
1942 /* OMAP4 CONTROL_DSIPHY */
1943 #define OMAP4_DSIPHY_SYSCON_OFFSET 0x78
1945 #define OMAP4_DSI2_LANEENABLE_SHIFT 29
1946 #define OMAP4_DSI2_LANEENABLE_MASK (0x7 << 29)
1947 #define OMAP4_DSI1_LANEENABLE_SHIFT 24
1948 #define OMAP4_DSI1_LANEENABLE_MASK (0x1f << 24)
1949 #define OMAP4_DSI1_PIPD_SHIFT 19
1950 #define OMAP4_DSI1_PIPD_MASK (0x1f << 19)
1951 #define OMAP4_DSI2_PIPD_SHIFT 14
1952 #define OMAP4_DSI2_PIPD_MASK (0x1f << 14)
1954 static int dsi_omap4_mux_pads(struct dsi_data *dsi, unsigned int lanes)
1956 u32 enable_mask, enable_shift;
1957 u32 pipd_mask, pipd_shift;
1959 if (dsi->module_id == 0) {
1960 enable_mask = OMAP4_DSI1_LANEENABLE_MASK;
1961 enable_shift = OMAP4_DSI1_LANEENABLE_SHIFT;
1962 pipd_mask = OMAP4_DSI1_PIPD_MASK;
1963 pipd_shift = OMAP4_DSI1_PIPD_SHIFT;
1964 } else if (dsi->module_id == 1) {
1965 enable_mask = OMAP4_DSI2_LANEENABLE_MASK;
1966 enable_shift = OMAP4_DSI2_LANEENABLE_SHIFT;
1967 pipd_mask = OMAP4_DSI2_PIPD_MASK;
1968 pipd_shift = OMAP4_DSI2_PIPD_SHIFT;
1973 return regmap_update_bits(dsi->syscon, OMAP4_DSIPHY_SYSCON_OFFSET,
1974 enable_mask | pipd_mask,
1975 (lanes << enable_shift) | (lanes << pipd_shift));
1978 /* OMAP5 CONTROL_DSIPHY */
1980 #define OMAP5_DSIPHY_SYSCON_OFFSET 0x74
1982 #define OMAP5_DSI1_LANEENABLE_SHIFT 24
1983 #define OMAP5_DSI2_LANEENABLE_SHIFT 19
1984 #define OMAP5_DSI_LANEENABLE_MASK 0x1f
1986 static int dsi_omap5_mux_pads(struct dsi_data *dsi, unsigned int lanes)
1990 if (dsi->module_id == 0)
1991 enable_shift = OMAP5_DSI1_LANEENABLE_SHIFT;
1992 else if (dsi->module_id == 1)
1993 enable_shift = OMAP5_DSI2_LANEENABLE_SHIFT;
1997 return regmap_update_bits(dsi->syscon, OMAP5_DSIPHY_SYSCON_OFFSET,
1998 OMAP5_DSI_LANEENABLE_MASK << enable_shift,
1999 lanes << enable_shift);
2002 static int dsi_enable_pads(struct dsi_data *dsi, unsigned int lane_mask)
2004 if (dsi->data->model == DSI_MODEL_OMAP4)
2005 return dsi_omap4_mux_pads(dsi, lane_mask);
2006 if (dsi->data->model == DSI_MODEL_OMAP5)
2007 return dsi_omap5_mux_pads(dsi, lane_mask);
2011 static void dsi_disable_pads(struct dsi_data *dsi)
2013 if (dsi->data->model == DSI_MODEL_OMAP4)
2014 dsi_omap4_mux_pads(dsi, 0);
2015 else if (dsi->data->model == DSI_MODEL_OMAP5)
2016 dsi_omap5_mux_pads(dsi, 0);
2019 static int dsi_cio_init(struct dsi_data *dsi)
2024 DSSDBG("DSI CIO init starts");
2026 r = dsi_enable_pads(dsi, dsi_get_lane_mask(dsi));
2030 dsi_enable_scp_clk(dsi);
2032 /* A dummy read using the SCP interface to any DSIPHY register is
2033 * required after DSIPHY reset to complete the reset of the DSI complex
2035 dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
2037 if (!wait_for_bit_change(dsi, DSI_DSIPHY_CFG5, 30, 1)) {
2038 DSSERR("CIO SCP Clock domain not coming out of reset.\n");
2040 goto err_scp_clk_dom;
2043 r = dsi_set_lane_config(dsi);
2045 goto err_scp_clk_dom;
2047 /* set TX STOP MODE timer to maximum for this operation */
2048 l = dsi_read_reg(dsi, DSI_TIMING1);
2049 l = FLD_MOD(l, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2050 l = FLD_MOD(l, 1, 14, 14); /* STOP_STATE_X16_IO */
2051 l = FLD_MOD(l, 1, 13, 13); /* STOP_STATE_X4_IO */
2052 l = FLD_MOD(l, 0x1fff, 12, 0); /* STOP_STATE_COUNTER_IO */
2053 dsi_write_reg(dsi, DSI_TIMING1, l);
2055 if (dsi->ulps_enabled) {
2056 unsigned int mask_p;
2059 DSSDBG("manual ulps exit\n");
2061 /* ULPS is exited by Mark-1 state for 1ms, followed by
2062 * stop state. DSS HW cannot do this via the normal
2063 * ULPS exit sequence, as after reset the DSS HW thinks
2064 * that we are not in ULPS mode, and refuses to send the
2065 * sequence. So we need to send the ULPS exit sequence
2066 * manually by setting positive lines high and negative lines
2072 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2073 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
2078 dsi_cio_enable_lane_override(dsi, mask_p, 0);
2081 r = dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_ON);
2085 if (!wait_for_bit_change(dsi, DSI_COMPLEXIO_CFG1, 29, 1)) {
2086 DSSERR("CIO PWR clock domain not coming out of reset.\n");
2088 goto err_cio_pwr_dom;
2091 dsi_if_enable(dsi, true);
2092 dsi_if_enable(dsi, false);
2093 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
2095 r = dsi_cio_wait_tx_clk_esc_reset(dsi);
2097 goto err_tx_clk_esc_rst;
2099 if (dsi->ulps_enabled) {
2100 /* Keep Mark-1 state for 1ms (as per DSI spec) */
2101 ktime_t wait = ns_to_ktime(1000 * 1000);
2102 set_current_state(TASK_UNINTERRUPTIBLE);
2103 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
2105 /* Disable the override. The lanes should be set to Mark-11
2106 * state by the HW */
2107 dsi_cio_disable_lane_override(dsi);
2110 /* FORCE_TX_STOP_MODE_IO */
2111 REG_FLD_MOD(dsi, DSI_TIMING1, 0, 15, 15);
2113 dsi_cio_timings(dsi);
2115 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
2116 /* DDR_CLK_ALWAYS_ON */
2117 REG_FLD_MOD(dsi, DSI_CLK_CTRL,
2118 dsi->vm_timings.ddr_clk_always_on, 13, 13);
2121 dsi->ulps_enabled = false;
2123 DSSDBG("CIO init done\n");
2128 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 20, 20); /* LP_CLK_ENABLE */
2130 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_OFF);
2132 if (dsi->ulps_enabled)
2133 dsi_cio_disable_lane_override(dsi);
2135 dsi_disable_scp_clk(dsi);
2136 dsi_disable_pads(dsi);
2140 static void dsi_cio_uninit(struct dsi_data *dsi)
2142 /* DDR_CLK_ALWAYS_ON */
2143 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 13, 13);
2145 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_OFF);
2146 dsi_disable_scp_clk(dsi);
2147 dsi_disable_pads(dsi);
2150 static void dsi_config_tx_fifo(struct dsi_data *dsi,
2151 enum fifo_size size1, enum fifo_size size2,
2152 enum fifo_size size3, enum fifo_size size4)
2158 dsi->vc[0].tx_fifo_size = size1;
2159 dsi->vc[1].tx_fifo_size = size2;
2160 dsi->vc[2].tx_fifo_size = size3;
2161 dsi->vc[3].tx_fifo_size = size4;
2163 for (i = 0; i < 4; i++) {
2165 int size = dsi->vc[i].tx_fifo_size;
2167 if (add + size > 4) {
2168 DSSERR("Illegal FIFO configuration\n");
2173 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2175 /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
2179 dsi_write_reg(dsi, DSI_TX_FIFO_VC_SIZE, r);
2182 static void dsi_config_rx_fifo(struct dsi_data *dsi,
2183 enum fifo_size size1, enum fifo_size size2,
2184 enum fifo_size size3, enum fifo_size size4)
2190 dsi->vc[0].rx_fifo_size = size1;
2191 dsi->vc[1].rx_fifo_size = size2;
2192 dsi->vc[2].rx_fifo_size = size3;
2193 dsi->vc[3].rx_fifo_size = size4;
2195 for (i = 0; i < 4; i++) {
2197 int size = dsi->vc[i].rx_fifo_size;
2199 if (add + size > 4) {
2200 DSSERR("Illegal FIFO configuration\n");
2205 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2207 /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
2211 dsi_write_reg(dsi, DSI_RX_FIFO_VC_SIZE, r);
2214 static int dsi_force_tx_stop_mode_io(struct dsi_data *dsi)
2218 r = dsi_read_reg(dsi, DSI_TIMING1);
2219 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2220 dsi_write_reg(dsi, DSI_TIMING1, r);
2222 if (!wait_for_bit_change(dsi, DSI_TIMING1, 15, 0)) {
2223 DSSERR("TX_STOP bit not going down\n");
2230 static bool dsi_vc_is_enabled(struct dsi_data *dsi, int channel)
2232 return REG_GET(dsi, DSI_VC_CTRL(channel), 0, 0);
2235 static void dsi_packet_sent_handler_vp(void *data, u32 mask)
2237 struct dsi_packet_sent_handler_data *vp_data =
2238 (struct dsi_packet_sent_handler_data *) data;
2239 struct dsi_data *dsi = vp_data->dsi;
2240 const int channel = dsi->update_channel;
2241 u8 bit = dsi->te_enabled ? 30 : 31;
2243 if (REG_GET(dsi, DSI_VC_TE(channel), bit, bit) == 0)
2244 complete(vp_data->completion);
2247 static int dsi_sync_vc_vp(struct dsi_data *dsi, int channel)
2249 DECLARE_COMPLETION_ONSTACK(completion);
2250 struct dsi_packet_sent_handler_data vp_data = {
2252 .completion = &completion
2257 bit = dsi->te_enabled ? 30 : 31;
2259 r = dsi_register_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2260 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2264 /* Wait for completion only if TE_EN/TE_START is still set */
2265 if (REG_GET(dsi, DSI_VC_TE(channel), bit, bit)) {
2266 if (wait_for_completion_timeout(&completion,
2267 msecs_to_jiffies(10)) == 0) {
2268 DSSERR("Failed to complete previous frame transfer\n");
2274 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2275 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2279 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2280 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2285 static void dsi_packet_sent_handler_l4(void *data, u32 mask)
2287 struct dsi_packet_sent_handler_data *l4_data =
2288 (struct dsi_packet_sent_handler_data *) data;
2289 struct dsi_data *dsi = l4_data->dsi;
2290 const int channel = dsi->update_channel;
2292 if (REG_GET(dsi, DSI_VC_CTRL(channel), 5, 5) == 0)
2293 complete(l4_data->completion);
2296 static int dsi_sync_vc_l4(struct dsi_data *dsi, int channel)
2298 DECLARE_COMPLETION_ONSTACK(completion);
2299 struct dsi_packet_sent_handler_data l4_data = {
2301 .completion = &completion
2305 r = dsi_register_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2306 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2310 /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
2311 if (REG_GET(dsi, DSI_VC_CTRL(channel), 5, 5)) {
2312 if (wait_for_completion_timeout(&completion,
2313 msecs_to_jiffies(10)) == 0) {
2314 DSSERR("Failed to complete previous l4 transfer\n");
2320 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2321 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2325 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2326 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2331 static int dsi_sync_vc(struct dsi_data *dsi, int channel)
2333 WARN_ON(!dsi_bus_is_locked(dsi));
2335 WARN_ON(in_interrupt());
2337 if (!dsi_vc_is_enabled(dsi, channel))
2340 switch (dsi->vc[channel].source) {
2341 case DSI_VC_SOURCE_VP:
2342 return dsi_sync_vc_vp(dsi, channel);
2343 case DSI_VC_SOURCE_L4:
2344 return dsi_sync_vc_l4(dsi, channel);
2351 static int dsi_vc_enable(struct dsi_data *dsi, int channel, bool enable)
2353 DSSDBG("dsi_vc_enable channel %d, enable %d\n",
2356 enable = enable ? 1 : 0;
2358 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 0, 0);
2360 if (!wait_for_bit_change(dsi, DSI_VC_CTRL(channel), 0, enable)) {
2361 DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
2368 static void dsi_vc_initial_config(struct dsi_data *dsi, int channel)
2372 DSSDBG("Initial config of virtual channel %d", channel);
2374 r = dsi_read_reg(dsi, DSI_VC_CTRL(channel));
2376 if (FLD_GET(r, 15, 15)) /* VC_BUSY */
2377 DSSERR("VC(%d) busy when trying to configure it!\n",
2380 r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
2381 r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
2382 r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
2383 r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
2384 r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
2385 r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
2386 r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
2387 if (dsi->data->quirks & DSI_QUIRK_VC_OCP_WIDTH)
2388 r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
2390 r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
2391 r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
2393 dsi_write_reg(dsi, DSI_VC_CTRL(channel), r);
2395 dsi->vc[channel].source = DSI_VC_SOURCE_L4;
2398 static int dsi_vc_config_source(struct dsi_data *dsi, int channel,
2399 enum dsi_vc_source source)
2401 if (dsi->vc[channel].source == source)
2404 DSSDBG("Source config of virtual channel %d", channel);
2406 dsi_sync_vc(dsi, channel);
2408 dsi_vc_enable(dsi, channel, 0);
2411 if (!wait_for_bit_change(dsi, DSI_VC_CTRL(channel), 15, 0)) {
2412 DSSERR("vc(%d) busy when trying to config for VP\n", channel);
2416 /* SOURCE, 0 = L4, 1 = video port */
2417 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), source, 1, 1);
2419 /* DCS_CMD_ENABLE */
2420 if (dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC) {
2421 bool enable = source == DSI_VC_SOURCE_VP;
2422 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 30, 30);
2425 dsi_vc_enable(dsi, channel, 1);
2427 dsi->vc[channel].source = source;
2432 static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel,
2435 struct dsi_data *dsi = to_dsi_data(dssdev);
2437 DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
2439 WARN_ON(!dsi_bus_is_locked(dsi));
2441 dsi_vc_enable(dsi, channel, 0);
2442 dsi_if_enable(dsi, 0);
2444 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 9, 9);
2446 dsi_vc_enable(dsi, channel, 1);
2447 dsi_if_enable(dsi, 1);
2449 dsi_force_tx_stop_mode_io(dsi);
2451 /* start the DDR clock by sending a NULL packet */
2452 if (dsi->vm_timings.ddr_clk_always_on && enable)
2453 dsi_vc_send_null(dsi, channel);
2456 static void dsi_vc_flush_long_data(struct dsi_data *dsi, int channel)
2458 while (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2460 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2461 DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
2465 (val >> 24) & 0xff);
2469 static void dsi_show_rx_ack_with_err(u16 err)
2471 DSSERR("\tACK with ERROR (%#x):\n", err);
2473 DSSERR("\t\tSoT Error\n");
2475 DSSERR("\t\tSoT Sync Error\n");
2477 DSSERR("\t\tEoT Sync Error\n");
2479 DSSERR("\t\tEscape Mode Entry Command Error\n");
2481 DSSERR("\t\tLP Transmit Sync Error\n");
2483 DSSERR("\t\tHS Receive Timeout Error\n");
2485 DSSERR("\t\tFalse Control Error\n");
2487 DSSERR("\t\t(reserved7)\n");
2489 DSSERR("\t\tECC Error, single-bit (corrected)\n");
2491 DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
2492 if (err & (1 << 10))
2493 DSSERR("\t\tChecksum Error\n");
2494 if (err & (1 << 11))
2495 DSSERR("\t\tData type not recognized\n");
2496 if (err & (1 << 12))
2497 DSSERR("\t\tInvalid VC ID\n");
2498 if (err & (1 << 13))
2499 DSSERR("\t\tInvalid Transmission Length\n");
2500 if (err & (1 << 14))
2501 DSSERR("\t\t(reserved14)\n");
2502 if (err & (1 << 15))
2503 DSSERR("\t\tDSI Protocol Violation\n");
2506 static u16 dsi_vc_flush_receive_data(struct dsi_data *dsi, int channel)
2508 /* RX_FIFO_NOT_EMPTY */
2509 while (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2512 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2513 DSSERR("\trawval %#08x\n", val);
2514 dt = FLD_GET(val, 5, 0);
2515 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
2516 u16 err = FLD_GET(val, 23, 8);
2517 dsi_show_rx_ack_with_err(err);
2518 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE) {
2519 DSSERR("\tDCS short response, 1 byte: %#x\n",
2520 FLD_GET(val, 23, 8));
2521 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE) {
2522 DSSERR("\tDCS short response, 2 byte: %#x\n",
2523 FLD_GET(val, 23, 8));
2524 } else if (dt == MIPI_DSI_RX_DCS_LONG_READ_RESPONSE) {
2525 DSSERR("\tDCS long response, len %d\n",
2526 FLD_GET(val, 23, 8));
2527 dsi_vc_flush_long_data(dsi, channel);
2529 DSSERR("\tunknown datatype 0x%02x\n", dt);
2535 static int dsi_vc_send_bta(struct dsi_data *dsi, int channel)
2537 if (dsi->debug_write || dsi->debug_read)
2538 DSSDBG("dsi_vc_send_bta %d\n", channel);
2540 WARN_ON(!dsi_bus_is_locked(dsi));
2542 /* RX_FIFO_NOT_EMPTY */
2543 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2544 DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
2545 dsi_vc_flush_receive_data(dsi, channel);
2548 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
2550 /* flush posted write */
2551 dsi_read_reg(dsi, DSI_VC_CTRL(channel));
2556 static int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int channel)
2558 struct dsi_data *dsi = to_dsi_data(dssdev);
2559 DECLARE_COMPLETION_ONSTACK(completion);
2563 r = dsi_register_isr_vc(dsi, channel, dsi_completion_handler,
2564 &completion, DSI_VC_IRQ_BTA);
2568 r = dsi_register_isr(dsi, dsi_completion_handler, &completion,
2569 DSI_IRQ_ERROR_MASK);
2573 r = dsi_vc_send_bta(dsi, channel);
2577 if (wait_for_completion_timeout(&completion,
2578 msecs_to_jiffies(500)) == 0) {
2579 DSSERR("Failed to receive BTA\n");
2584 err = dsi_get_errors(dsi);
2586 DSSERR("Error while sending BTA: %x\n", err);
2591 dsi_unregister_isr(dsi, dsi_completion_handler, &completion,
2592 DSI_IRQ_ERROR_MASK);
2594 dsi_unregister_isr_vc(dsi, channel, dsi_completion_handler,
2595 &completion, DSI_VC_IRQ_BTA);
2600 static inline void dsi_vc_write_long_header(struct dsi_data *dsi, int channel,
2601 u8 data_type, u16 len, u8 ecc)
2606 WARN_ON(!dsi_bus_is_locked(dsi));
2608 data_id = data_type | dsi->vc[channel].vc_id << 6;
2610 val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
2611 FLD_VAL(ecc, 31, 24);
2613 dsi_write_reg(dsi, DSI_VC_LONG_PACKET_HEADER(channel), val);
2616 static inline void dsi_vc_write_long_payload(struct dsi_data *dsi, int channel,
2617 u8 b1, u8 b2, u8 b3, u8 b4)
2621 val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
2623 /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
2624 b1, b2, b3, b4, val); */
2626 dsi_write_reg(dsi, DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
2629 static int dsi_vc_send_long(struct dsi_data *dsi, int channel, u8 data_type,
2630 u8 *data, u16 len, u8 ecc)
2638 if (dsi->debug_write)
2639 DSSDBG("dsi_vc_send_long, %d bytes\n", len);
2642 if (dsi->vc[channel].tx_fifo_size * 32 * 4 < len + 4) {
2643 DSSERR("unable to send long packet: packet too long.\n");
2647 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_L4);
2649 dsi_vc_write_long_header(dsi, channel, data_type, len, ecc);
2652 for (i = 0; i < len >> 2; i++) {
2653 if (dsi->debug_write)
2654 DSSDBG("\tsending full packet %d\n", i);
2661 dsi_vc_write_long_payload(dsi, channel, b1, b2, b3, b4);
2666 b1 = 0; b2 = 0; b3 = 0;
2668 if (dsi->debug_write)
2669 DSSDBG("\tsending remainder bytes %d\n", i);
2686 dsi_vc_write_long_payload(dsi, channel, b1, b2, b3, 0);
2692 static int dsi_vc_send_short(struct dsi_data *dsi, int channel, u8 data_type,
2698 WARN_ON(!dsi_bus_is_locked(dsi));
2700 if (dsi->debug_write)
2701 DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
2703 data_type, data & 0xff, (data >> 8) & 0xff);
2705 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_L4);
2707 if (FLD_GET(dsi_read_reg(dsi, DSI_VC_CTRL(channel)), 16, 16)) {
2708 DSSERR("ERROR FIFO FULL, aborting transfer\n");
2712 data_id = data_type | dsi->vc[channel].vc_id << 6;
2714 r = (data_id << 0) | (data << 8) | (ecc << 24);
2716 dsi_write_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel), r);
2721 static int dsi_vc_send_null(struct dsi_data *dsi, int channel)
2723 return dsi_vc_send_long(dsi, channel, MIPI_DSI_NULL_PACKET, NULL, 0, 0);
2726 static int dsi_vc_write_nosync_common(struct dsi_data *dsi, int channel,
2728 enum dss_dsi_content_type type)
2733 BUG_ON(type == DSS_DSI_CONTENT_DCS);
2734 r = dsi_vc_send_short(dsi, channel,
2735 MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM, 0, 0);
2736 } else if (len == 1) {
2737 r = dsi_vc_send_short(dsi, channel,
2738 type == DSS_DSI_CONTENT_GENERIC ?
2739 MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM :
2740 MIPI_DSI_DCS_SHORT_WRITE, data[0], 0);
2741 } else if (len == 2) {
2742 r = dsi_vc_send_short(dsi, channel,
2743 type == DSS_DSI_CONTENT_GENERIC ?
2744 MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM :
2745 MIPI_DSI_DCS_SHORT_WRITE_PARAM,
2746 data[0] | (data[1] << 8), 0);
2748 r = dsi_vc_send_long(dsi, channel,
2749 type == DSS_DSI_CONTENT_GENERIC ?
2750 MIPI_DSI_GENERIC_LONG_WRITE :
2751 MIPI_DSI_DCS_LONG_WRITE, data, len, 0);
2757 static int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
2760 struct dsi_data *dsi = to_dsi_data(dssdev);
2762 return dsi_vc_write_nosync_common(dsi, channel, data, len,
2763 DSS_DSI_CONTENT_DCS);
2766 static int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int channel,
2769 struct dsi_data *dsi = to_dsi_data(dssdev);
2771 return dsi_vc_write_nosync_common(dsi, channel, data, len,
2772 DSS_DSI_CONTENT_GENERIC);
2775 static int dsi_vc_write_common(struct omap_dss_device *dssdev,
2776 int channel, u8 *data, int len,
2777 enum dss_dsi_content_type type)
2779 struct dsi_data *dsi = to_dsi_data(dssdev);
2782 r = dsi_vc_write_nosync_common(dsi, channel, data, len, type);
2786 r = dsi_vc_send_bta_sync(dssdev, channel);
2790 /* RX_FIFO_NOT_EMPTY */
2791 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2792 DSSERR("rx fifo not empty after write, dumping data:\n");
2793 dsi_vc_flush_receive_data(dsi, channel);
2800 DSSERR("dsi_vc_write_common(ch %d, cmd 0x%02x, len %d) failed\n",
2801 channel, data[0], len);
2805 static int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data,
2808 return dsi_vc_write_common(dssdev, channel, data, len,
2809 DSS_DSI_CONTENT_DCS);
2812 static int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, u8 *data,
2815 return dsi_vc_write_common(dssdev, channel, data, len,
2816 DSS_DSI_CONTENT_GENERIC);
2819 static int dsi_vc_dcs_send_read_request(struct dsi_data *dsi, int channel,
2824 if (dsi->debug_read)
2825 DSSDBG("dsi_vc_dcs_send_read_request(ch%d, dcs_cmd %x)\n",
2828 r = dsi_vc_send_short(dsi, channel, MIPI_DSI_DCS_READ, dcs_cmd, 0);
2830 DSSERR("dsi_vc_dcs_send_read_request(ch %d, cmd 0x%02x)"
2831 " failed\n", channel, dcs_cmd);
2838 static int dsi_vc_generic_send_read_request(struct dsi_data *dsi, int channel,
2839 u8 *reqdata, int reqlen)
2845 if (dsi->debug_read)
2846 DSSDBG("dsi_vc_generic_send_read_request(ch %d, reqlen %d)\n",
2850 data_type = MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM;
2852 } else if (reqlen == 1) {
2853 data_type = MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM;
2855 } else if (reqlen == 2) {
2856 data_type = MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM;
2857 data = reqdata[0] | (reqdata[1] << 8);
2863 r = dsi_vc_send_short(dsi, channel, data_type, data, 0);
2865 DSSERR("dsi_vc_generic_send_read_request(ch %d, reqlen %d)"
2866 " failed\n", channel, reqlen);
2873 static int dsi_vc_read_rx_fifo(struct dsi_data *dsi, int channel, u8 *buf,
2874 int buflen, enum dss_dsi_content_type type)
2880 /* RX_FIFO_NOT_EMPTY */
2881 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20) == 0) {
2882 DSSERR("RX fifo empty when trying to read.\n");
2887 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2888 if (dsi->debug_read)
2889 DSSDBG("\theader: %08x\n", val);
2890 dt = FLD_GET(val, 5, 0);
2891 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
2892 u16 err = FLD_GET(val, 23, 8);
2893 dsi_show_rx_ack_with_err(err);
2897 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
2898 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE :
2899 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE)) {
2900 u8 data = FLD_GET(val, 15, 8);
2901 if (dsi->debug_read)
2902 DSSDBG("\t%s short response, 1 byte: %02x\n",
2903 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
2914 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
2915 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE :
2916 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE)) {
2917 u16 data = FLD_GET(val, 23, 8);
2918 if (dsi->debug_read)
2919 DSSDBG("\t%s short response, 2 byte: %04x\n",
2920 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
2928 buf[0] = data & 0xff;
2929 buf[1] = (data >> 8) & 0xff;
2932 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
2933 MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE :
2934 MIPI_DSI_RX_DCS_LONG_READ_RESPONSE)) {
2936 int len = FLD_GET(val, 23, 8);
2937 if (dsi->debug_read)
2938 DSSDBG("\t%s long response, len %d\n",
2939 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
2947 /* two byte checksum ends the packet, not included in len */
2948 for (w = 0; w < len + 2;) {
2950 val = dsi_read_reg(dsi,
2951 DSI_VC_SHORT_PACKET_HEADER(channel));
2952 if (dsi->debug_read)
2953 DSSDBG("\t\t%02x %02x %02x %02x\n",
2957 (val >> 24) & 0xff);
2959 for (b = 0; b < 4; ++b) {
2961 buf[w] = (val >> (b * 8)) & 0xff;
2962 /* we discard the 2 byte checksum */
2969 DSSERR("\tunknown datatype 0x%02x\n", dt);
2975 DSSERR("dsi_vc_read_rx_fifo(ch %d type %s) failed\n", channel,
2976 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : "DCS");
2981 static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
2982 u8 *buf, int buflen)
2984 struct dsi_data *dsi = to_dsi_data(dssdev);
2987 r = dsi_vc_dcs_send_read_request(dsi, channel, dcs_cmd);
2991 r = dsi_vc_send_bta_sync(dssdev, channel);
2995 r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
2996 DSS_DSI_CONTENT_DCS);
3007 DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n", channel, dcs_cmd);
3011 static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel,
3012 u8 *reqdata, int reqlen, u8 *buf, int buflen)
3014 struct dsi_data *dsi = to_dsi_data(dssdev);
3017 r = dsi_vc_generic_send_read_request(dsi, channel, reqdata, reqlen);
3021 r = dsi_vc_send_bta_sync(dssdev, channel);
3025 r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
3026 DSS_DSI_CONTENT_GENERIC);
3038 static int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel,
3041 struct dsi_data *dsi = to_dsi_data(dssdev);
3043 return dsi_vc_send_short(dsi, channel,
3044 MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, len, 0);
3047 static int dsi_enter_ulps(struct dsi_data *dsi)
3049 DECLARE_COMPLETION_ONSTACK(completion);
3053 DSSDBG("Entering ULPS");
3055 WARN_ON(!dsi_bus_is_locked(dsi));
3057 WARN_ON(dsi->ulps_enabled);
3059 if (dsi->ulps_enabled)
3062 /* DDR_CLK_ALWAYS_ON */
3063 if (REG_GET(dsi, DSI_CLK_CTRL, 13, 13)) {
3064 dsi_if_enable(dsi, 0);
3065 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 13, 13);
3066 dsi_if_enable(dsi, 1);
3069 dsi_sync_vc(dsi, 0);
3070 dsi_sync_vc(dsi, 1);
3071 dsi_sync_vc(dsi, 2);
3072 dsi_sync_vc(dsi, 3);
3074 dsi_force_tx_stop_mode_io(dsi);
3076 dsi_vc_enable(dsi, 0, false);
3077 dsi_vc_enable(dsi, 1, false);
3078 dsi_vc_enable(dsi, 2, false);
3079 dsi_vc_enable(dsi, 3, false);
3081 if (REG_GET(dsi, DSI_COMPLEXIO_CFG2, 16, 16)) { /* HS_BUSY */
3082 DSSERR("HS busy when enabling ULPS\n");
3086 if (REG_GET(dsi, DSI_COMPLEXIO_CFG2, 17, 17)) { /* LP_BUSY */
3087 DSSERR("LP busy when enabling ULPS\n");
3091 r = dsi_register_isr_cio(dsi, dsi_completion_handler, &completion,
3092 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3098 for (i = 0; i < dsi->num_lanes_supported; ++i) {
3099 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
3103 /* Assert TxRequestEsc for data lanes and TxUlpsClk for clk lane */
3104 /* LANEx_ULPS_SIG2 */
3105 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG2, mask, 9, 5);
3107 /* flush posted write and wait for SCP interface to finish the write */
3108 dsi_read_reg(dsi, DSI_COMPLEXIO_CFG2);
3110 if (wait_for_completion_timeout(&completion,
3111 msecs_to_jiffies(1000)) == 0) {
3112 DSSERR("ULPS enable timeout\n");
3117 dsi_unregister_isr_cio(dsi, dsi_completion_handler, &completion,
3118 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3120 /* Reset LANEx_ULPS_SIG2 */
3121 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG2, 0, 9, 5);
3123 /* flush posted write and wait for SCP interface to finish the write */
3124 dsi_read_reg(dsi, DSI_COMPLEXIO_CFG2);
3126 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_ULPS);
3128 dsi_if_enable(dsi, false);
3130 dsi->ulps_enabled = true;
3135 dsi_unregister_isr_cio(dsi, dsi_completion_handler, &completion,
3136 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3140 static void dsi_set_lp_rx_timeout(struct dsi_data *dsi, unsigned int ticks,
3144 unsigned long total_ticks;
3147 BUG_ON(ticks > 0x1fff);
3149 /* ticks in DSI_FCK */
3150 fck = dsi_fclk_rate(dsi);
3152 r = dsi_read_reg(dsi, DSI_TIMING2);
3153 r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
3154 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
3155 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
3156 r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
3157 dsi_write_reg(dsi, DSI_TIMING2, r);
3159 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3161 DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3163 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3164 (total_ticks * 1000) / (fck / 1000 / 1000));
3167 static void dsi_set_ta_timeout(struct dsi_data *dsi, unsigned int ticks,
3171 unsigned long total_ticks;
3174 BUG_ON(ticks > 0x1fff);
3176 /* ticks in DSI_FCK */
3177 fck = dsi_fclk_rate(dsi);
3179 r = dsi_read_reg(dsi, DSI_TIMING1);
3180 r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
3181 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
3182 r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
3183 r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
3184 dsi_write_reg(dsi, DSI_TIMING1, r);
3186 total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
3188 DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
3190 ticks, x8 ? " x8" : "", x16 ? " x16" : "",
3191 (total_ticks * 1000) / (fck / 1000 / 1000));
3194 static void dsi_set_stop_state_counter(struct dsi_data *dsi, unsigned int ticks,
3198 unsigned long total_ticks;
3201 BUG_ON(ticks > 0x1fff);
3203 /* ticks in DSI_FCK */
3204 fck = dsi_fclk_rate(dsi);
3206 r = dsi_read_reg(dsi, DSI_TIMING1);
3207 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
3208 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
3209 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
3210 r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
3211 dsi_write_reg(dsi, DSI_TIMING1, r);
3213 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3215 DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
3217 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3218 (total_ticks * 1000) / (fck / 1000 / 1000));
3221 static void dsi_set_hs_tx_timeout(struct dsi_data *dsi, unsigned int ticks,
3225 unsigned long total_ticks;
3228 BUG_ON(ticks > 0x1fff);
3230 /* ticks in TxByteClkHS */
3231 fck = dsi_get_txbyteclkhs(dsi);
3233 r = dsi_read_reg(dsi, DSI_TIMING2);
3234 r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
3235 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
3236 r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
3237 r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
3238 dsi_write_reg(dsi, DSI_TIMING2, r);
3240 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3242 DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3244 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3245 (total_ticks * 1000) / (fck / 1000 / 1000));
3248 static void dsi_config_vp_num_line_buffers(struct dsi_data *dsi)
3250 int num_line_buffers;
3252 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3253 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3254 const struct videomode *vm = &dsi->vm;
3256 * Don't use line buffers if width is greater than the video
3257 * port's line buffer size
3259 if (dsi->line_buffer_size <= vm->hactive * bpp / 8)
3260 num_line_buffers = 0;
3262 num_line_buffers = 2;
3264 /* Use maximum number of line buffers in command mode */
3265 num_line_buffers = 2;
3269 REG_FLD_MOD(dsi, DSI_CTRL, num_line_buffers, 13, 12);
3272 static void dsi_config_vp_sync_events(struct dsi_data *dsi)
3277 if (dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE)
3282 r = dsi_read_reg(dsi, DSI_CTRL);
3283 r = FLD_MOD(r, 1, 9, 9); /* VP_DE_POL */
3284 r = FLD_MOD(r, 1, 10, 10); /* VP_HSYNC_POL */
3285 r = FLD_MOD(r, 1, 11, 11); /* VP_VSYNC_POL */
3286 r = FLD_MOD(r, 1, 15, 15); /* VP_VSYNC_START */
3287 r = FLD_MOD(r, sync_end, 16, 16); /* VP_VSYNC_END */
3288 r = FLD_MOD(r, 1, 17, 17); /* VP_HSYNC_START */
3289 r = FLD_MOD(r, sync_end, 18, 18); /* VP_HSYNC_END */
3290 dsi_write_reg(dsi, DSI_CTRL, r);
3293 static void dsi_config_blanking_modes(struct dsi_data *dsi)
3295 int blanking_mode = dsi->vm_timings.blanking_mode;
3296 int hfp_blanking_mode = dsi->vm_timings.hfp_blanking_mode;
3297 int hbp_blanking_mode = dsi->vm_timings.hbp_blanking_mode;
3298 int hsa_blanking_mode = dsi->vm_timings.hsa_blanking_mode;
3302 * 0 = TX FIFO packets sent or LPS in corresponding blanking periods
3303 * 1 = Long blanking packets are sent in corresponding blanking periods
3305 r = dsi_read_reg(dsi, DSI_CTRL);
3306 r = FLD_MOD(r, blanking_mode, 20, 20); /* BLANKING_MODE */
3307 r = FLD_MOD(r, hfp_blanking_mode, 21, 21); /* HFP_BLANKING */
3308 r = FLD_MOD(r, hbp_blanking_mode, 22, 22); /* HBP_BLANKING */
3309 r = FLD_MOD(r, hsa_blanking_mode, 23, 23); /* HSA_BLANKING */
3310 dsi_write_reg(dsi, DSI_CTRL, r);
3314 * According to section 'HS Command Mode Interleaving' in OMAP TRM, Scenario 3
3315 * results in maximum transition time for data and clock lanes to enter and
3316 * exit HS mode. Hence, this is the scenario where the least amount of command
3317 * mode data can be interleaved. We program the minimum amount of TXBYTECLKHS
3318 * clock cycles that can be used to interleave command mode data in HS so that
3319 * all scenarios are satisfied.
3321 static int dsi_compute_interleave_hs(int blank, bool ddr_alwon, int enter_hs,
3322 int exit_hs, int exiths_clk, int ddr_pre, int ddr_post)
3327 * If DDR_CLK_ALWAYS_ON is set, we need to consider HS mode transition
3328 * time of data lanes only, if it isn't set, we need to consider HS
3329 * transition time of both data and clock lanes. HS transition time
3330 * of Scenario 3 is considered.
3333 transition = enter_hs + exit_hs + max(enter_hs, 2) + 1;
3336 trans1 = ddr_pre + enter_hs + exit_hs + max(enter_hs, 2) + 1;
3337 trans2 = ddr_pre + enter_hs + exiths_clk + ddr_post + ddr_pre +
3339 transition = max(trans1, trans2);
3342 return blank > transition ? blank - transition : 0;
3346 * According to section 'LP Command Mode Interleaving' in OMAP TRM, Scenario 1
3347 * results in maximum transition time for data lanes to enter and exit LP mode.
3348 * Hence, this is the scenario where the least amount of command mode data can
3349 * be interleaved. We program the minimum amount of bytes that can be
3350 * interleaved in LP so that all scenarios are satisfied.
3352 static int dsi_compute_interleave_lp(int blank, int enter_hs, int exit_hs,
3353 int lp_clk_div, int tdsi_fclk)
3355 int trans_lp; /* time required for a LP transition, in TXBYTECLKHS */
3356 int tlp_avail; /* time left for interleaving commands, in CLKIN4DDR */
3357 int ttxclkesc; /* period of LP transmit escape clock, in CLKIN4DDR */
3358 int thsbyte_clk = 16; /* Period of TXBYTECLKHS clock, in CLKIN4DDR */
3359 int lp_inter; /* cmd mode data that can be interleaved, in bytes */
3361 /* maximum LP transition time according to Scenario 1 */
3362 trans_lp = exit_hs + max(enter_hs, 2) + 1;
3364 /* CLKIN4DDR = 16 * TXBYTECLKHS */
3365 tlp_avail = thsbyte_clk * (blank - trans_lp);
3367 ttxclkesc = tdsi_fclk * lp_clk_div;
3369 lp_inter = ((tlp_avail - 8 * thsbyte_clk - 5 * tdsi_fclk) / ttxclkesc -
3372 return max(lp_inter, 0);
3375 static void dsi_config_cmd_mode_interleaving(struct dsi_data *dsi)
3378 int hfp_blanking_mode, hbp_blanking_mode, hsa_blanking_mode;
3379 int hsa, hfp, hbp, width_bytes, bllp, lp_clk_div;
3380 int ddr_clk_pre, ddr_clk_post, enter_hs_mode_lat, exit_hs_mode_lat;
3381 int tclk_trail, ths_exit, exiths_clk;
3383 const struct videomode *vm = &dsi->vm;
3384 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3385 int ndl = dsi->num_lanes_used - 1;
3386 int dsi_fclk_hsdiv = dsi->user_dsi_cinfo.mX[HSDIV_DSI] + 1;
3387 int hsa_interleave_hs = 0, hsa_interleave_lp = 0;
3388 int hfp_interleave_hs = 0, hfp_interleave_lp = 0;
3389 int hbp_interleave_hs = 0, hbp_interleave_lp = 0;
3390 int bl_interleave_hs = 0, bl_interleave_lp = 0;
3393 r = dsi_read_reg(dsi, DSI_CTRL);
3394 blanking_mode = FLD_GET(r, 20, 20);
3395 hfp_blanking_mode = FLD_GET(r, 21, 21);
3396 hbp_blanking_mode = FLD_GET(r, 22, 22);
3397 hsa_blanking_mode = FLD_GET(r, 23, 23);
3399 r = dsi_read_reg(dsi, DSI_VM_TIMING1);
3400 hbp = FLD_GET(r, 11, 0);
3401 hfp = FLD_GET(r, 23, 12);
3402 hsa = FLD_GET(r, 31, 24);
3404 r = dsi_read_reg(dsi, DSI_CLK_TIMING);
3405 ddr_clk_post = FLD_GET(r, 7, 0);
3406 ddr_clk_pre = FLD_GET(r, 15, 8);
3408 r = dsi_read_reg(dsi, DSI_VM_TIMING7);
3409 exit_hs_mode_lat = FLD_GET(r, 15, 0);
3410 enter_hs_mode_lat = FLD_GET(r, 31, 16);
3412 r = dsi_read_reg(dsi, DSI_CLK_CTRL);
3413 lp_clk_div = FLD_GET(r, 12, 0);
3414 ddr_alwon = FLD_GET(r, 13, 13);
3416 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
3417 ths_exit = FLD_GET(r, 7, 0);
3419 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
3420 tclk_trail = FLD_GET(r, 15, 8);
3422 exiths_clk = ths_exit + tclk_trail;
3424 width_bytes = DIV_ROUND_UP(vm->hactive * bpp, 8);
3425 bllp = hbp + hfp + hsa + DIV_ROUND_UP(width_bytes + 6, ndl);
3427 if (!hsa_blanking_mode) {
3428 hsa_interleave_hs = dsi_compute_interleave_hs(hsa, ddr_alwon,
3429 enter_hs_mode_lat, exit_hs_mode_lat,
3430 exiths_clk, ddr_clk_pre, ddr_clk_post);
3431 hsa_interleave_lp = dsi_compute_interleave_lp(hsa,
3432 enter_hs_mode_lat, exit_hs_mode_lat,
3433 lp_clk_div, dsi_fclk_hsdiv);
3436 if (!hfp_blanking_mode) {
3437 hfp_interleave_hs = dsi_compute_interleave_hs(hfp, ddr_alwon,
3438 enter_hs_mode_lat, exit_hs_mode_lat,
3439 exiths_clk, ddr_clk_pre, ddr_clk_post);
3440 hfp_interleave_lp = dsi_compute_interleave_lp(hfp,
3441 enter_hs_mode_lat, exit_hs_mode_lat,
3442 lp_clk_div, dsi_fclk_hsdiv);
3445 if (!hbp_blanking_mode) {
3446 hbp_interleave_hs = dsi_compute_interleave_hs(hbp, ddr_alwon,
3447 enter_hs_mode_lat, exit_hs_mode_lat,
3448 exiths_clk, ddr_clk_pre, ddr_clk_post);
3450 hbp_interleave_lp = dsi_compute_interleave_lp(hbp,
3451 enter_hs_mode_lat, exit_hs_mode_lat,
3452 lp_clk_div, dsi_fclk_hsdiv);
3455 if (!blanking_mode) {
3456 bl_interleave_hs = dsi_compute_interleave_hs(bllp, ddr_alwon,
3457 enter_hs_mode_lat, exit_hs_mode_lat,
3458 exiths_clk, ddr_clk_pre, ddr_clk_post);
3460 bl_interleave_lp = dsi_compute_interleave_lp(bllp,
3461 enter_hs_mode_lat, exit_hs_mode_lat,
3462 lp_clk_div, dsi_fclk_hsdiv);
3465 DSSDBG("DSI HS interleaving(TXBYTECLKHS) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3466 hsa_interleave_hs, hfp_interleave_hs, hbp_interleave_hs,
3469 DSSDBG("DSI LP interleaving(bytes) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3470 hsa_interleave_lp, hfp_interleave_lp, hbp_interleave_lp,
3473 r = dsi_read_reg(dsi, DSI_VM_TIMING4);
3474 r = FLD_MOD(r, hsa_interleave_hs, 23, 16);
3475 r = FLD_MOD(r, hfp_interleave_hs, 15, 8);
3476 r = FLD_MOD(r, hbp_interleave_hs, 7, 0);
3477 dsi_write_reg(dsi, DSI_VM_TIMING4, r);
3479 r = dsi_read_reg(dsi, DSI_VM_TIMING5);
3480 r = FLD_MOD(r, hsa_interleave_lp, 23, 16);
3481 r = FLD_MOD(r, hfp_interleave_lp, 15, 8);
3482 r = FLD_MOD(r, hbp_interleave_lp, 7, 0);
3483 dsi_write_reg(dsi, DSI_VM_TIMING5, r);
3485 r = dsi_read_reg(dsi, DSI_VM_TIMING6);
3486 r = FLD_MOD(r, bl_interleave_hs, 31, 15);
3487 r = FLD_MOD(r, bl_interleave_lp, 16, 0);
3488 dsi_write_reg(dsi, DSI_VM_TIMING6, r);
3491 static int dsi_proto_config(struct dsi_data *dsi)
3496 dsi_config_tx_fifo(dsi, DSI_FIFO_SIZE_32,
3501 dsi_config_rx_fifo(dsi, DSI_FIFO_SIZE_32,
3506 /* XXX what values for the timeouts? */
3507 dsi_set_stop_state_counter(dsi, 0x1000, false, false);
3508 dsi_set_ta_timeout(dsi, 0x1fff, true, true);
3509 dsi_set_lp_rx_timeout(dsi, 0x1fff, true, true);
3510 dsi_set_hs_tx_timeout(dsi, 0x1fff, true, true);
3512 switch (dsi_get_pixel_size(dsi->pix_fmt)) {
3527 r = dsi_read_reg(dsi, DSI_CTRL);
3528 r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
3529 r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
3530 r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
3531 r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
3532 r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
3533 r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
3534 r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
3535 r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
3536 if (!(dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC)) {
3537 r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
3538 /* DCS_CMD_CODE, 1=start, 0=continue */
3539 r = FLD_MOD(r, 0, 25, 25);
3542 dsi_write_reg(dsi, DSI_CTRL, r);
3544 dsi_config_vp_num_line_buffers(dsi);
3546 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3547 dsi_config_vp_sync_events(dsi);
3548 dsi_config_blanking_modes(dsi);
3549 dsi_config_cmd_mode_interleaving(dsi);
3552 dsi_vc_initial_config(dsi, 0);
3553 dsi_vc_initial_config(dsi, 1);
3554 dsi_vc_initial_config(dsi, 2);
3555 dsi_vc_initial_config(dsi, 3);
3560 static void dsi_proto_timings(struct dsi_data *dsi)
3562 unsigned int tlpx, tclk_zero, tclk_prepare, tclk_trail;
3563 unsigned int tclk_pre, tclk_post;
3564 unsigned int ths_prepare, ths_prepare_ths_zero, ths_zero;
3565 unsigned int ths_trail, ths_exit;
3566 unsigned int ddr_clk_pre, ddr_clk_post;
3567 unsigned int enter_hs_mode_lat, exit_hs_mode_lat;
3568 unsigned int ths_eot;
3569 int ndl = dsi->num_lanes_used - 1;
3572 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
3573 ths_prepare = FLD_GET(r, 31, 24);
3574 ths_prepare_ths_zero = FLD_GET(r, 23, 16);
3575 ths_zero = ths_prepare_ths_zero - ths_prepare;
3576 ths_trail = FLD_GET(r, 15, 8);
3577 ths_exit = FLD_GET(r, 7, 0);
3579 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
3580 tlpx = FLD_GET(r, 20, 16) * 2;
3581 tclk_trail = FLD_GET(r, 15, 8);
3582 tclk_zero = FLD_GET(r, 7, 0);
3584 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG2);
3585 tclk_prepare = FLD_GET(r, 7, 0);
3589 /* min 60ns + 52*UI */
3590 tclk_post = ns2ddr(dsi, 60) + 26;
3592 ths_eot = DIV_ROUND_UP(4, ndl);
3594 ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
3596 ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
3598 BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
3599 BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
3601 r = dsi_read_reg(dsi, DSI_CLK_TIMING);
3602 r = FLD_MOD(r, ddr_clk_pre, 15, 8);
3603 r = FLD_MOD(r, ddr_clk_post, 7, 0);
3604 dsi_write_reg(dsi, DSI_CLK_TIMING, r);
3606 DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
3610 enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
3611 DIV_ROUND_UP(ths_prepare, 4) +
3612 DIV_ROUND_UP(ths_zero + 3, 4);
3614 exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
3616 r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
3617 FLD_VAL(exit_hs_mode_lat, 15, 0);
3618 dsi_write_reg(dsi, DSI_VM_TIMING7, r);
3620 DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
3621 enter_hs_mode_lat, exit_hs_mode_lat);
3623 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3624 /* TODO: Implement a video mode check_timings function */
3625 int hsa = dsi->vm_timings.hsa;
3626 int hfp = dsi->vm_timings.hfp;
3627 int hbp = dsi->vm_timings.hbp;
3628 int vsa = dsi->vm_timings.vsa;
3629 int vfp = dsi->vm_timings.vfp;
3630 int vbp = dsi->vm_timings.vbp;
3631 int window_sync = dsi->vm_timings.window_sync;
3633 const struct videomode *vm = &dsi->vm;
3634 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3635 int tl, t_he, width_bytes;
3637 hsync_end = dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE;
3639 ((hsa == 0 && ndl == 3) ? 1 : DIV_ROUND_UP(4, ndl)) : 0;
3641 width_bytes = DIV_ROUND_UP(vm->hactive * bpp, 8);
3643 /* TL = t_HS + HSA + t_HE + HFP + ceil((WC + 6) / NDL) + HBP */
3644 tl = DIV_ROUND_UP(4, ndl) + (hsync_end ? hsa : 0) + t_he + hfp +
3645 DIV_ROUND_UP(width_bytes + 6, ndl) + hbp;
3647 DSSDBG("HBP: %d, HFP: %d, HSA: %d, TL: %d TXBYTECLKHS\n", hbp,
3648 hfp, hsync_end ? hsa : 0, tl);
3649 DSSDBG("VBP: %d, VFP: %d, VSA: %d, VACT: %d lines\n", vbp, vfp,
3652 r = dsi_read_reg(dsi, DSI_VM_TIMING1);
3653 r = FLD_MOD(r, hbp, 11, 0); /* HBP */
3654 r = FLD_MOD(r, hfp, 23, 12); /* HFP */
3655 r = FLD_MOD(r, hsync_end ? hsa : 0, 31, 24); /* HSA */
3656 dsi_write_reg(dsi, DSI_VM_TIMING1, r);
3658 r = dsi_read_reg(dsi, DSI_VM_TIMING2);
3659 r = FLD_MOD(r, vbp, 7, 0); /* VBP */
3660 r = FLD_MOD(r, vfp, 15, 8); /* VFP */
3661 r = FLD_MOD(r, vsa, 23, 16); /* VSA */
3662 r = FLD_MOD(r, window_sync, 27, 24); /* WINDOW_SYNC */
3663 dsi_write_reg(dsi, DSI_VM_TIMING2, r);
3665 r = dsi_read_reg(dsi, DSI_VM_TIMING3);
3666 r = FLD_MOD(r, vm->vactive, 14, 0); /* VACT */
3667 r = FLD_MOD(r, tl, 31, 16); /* TL */
3668 dsi_write_reg(dsi, DSI_VM_TIMING3, r);
3672 static int dsi_configure_pins(struct omap_dss_device *dssdev,
3673 const struct omap_dsi_pin_config *pin_cfg)
3675 struct dsi_data *dsi = to_dsi_data(dssdev);
3678 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
3682 static const enum dsi_lane_function functions[] = {
3690 num_pins = pin_cfg->num_pins;
3691 pins = pin_cfg->pins;
3693 if (num_pins < 4 || num_pins > dsi->num_lanes_supported * 2
3694 || num_pins % 2 != 0)
3697 for (i = 0; i < DSI_MAX_NR_LANES; ++i)
3698 lanes[i].function = DSI_LANE_UNUSED;
3702 for (i = 0; i < num_pins; i += 2) {
3709 if (dx < 0 || dx >= dsi->num_lanes_supported * 2)
3712 if (dy < 0 || dy >= dsi->num_lanes_supported * 2)
3727 lanes[lane].function = functions[i / 2];
3728 lanes[lane].polarity = pol;
3732 memcpy(dsi->lanes, lanes, sizeof(dsi->lanes));
3733 dsi->num_lanes_used = num_lanes;
3738 static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
3740 struct dsi_data *dsi = to_dsi_data(dssdev);
3741 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3746 r = dsi_display_init_dispc(dsi);
3750 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3751 switch (dsi->pix_fmt) {
3752 case OMAP_DSS_DSI_FMT_RGB888:
3753 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_24;
3755 case OMAP_DSS_DSI_FMT_RGB666:
3756 data_type = MIPI_DSI_PIXEL_STREAM_3BYTE_18;
3758 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
3759 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_18;
3761 case OMAP_DSS_DSI_FMT_RGB565:
3762 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_16;
3769 dsi_if_enable(dsi, false);
3770 dsi_vc_enable(dsi, channel, false);
3772 /* MODE, 1 = video mode */
3773 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 1, 4, 4);
3775 word_count = DIV_ROUND_UP(dsi->vm.hactive * bpp, 8);
3777 dsi_vc_write_long_header(dsi, channel, data_type,
3780 dsi_vc_enable(dsi, channel, true);
3781 dsi_if_enable(dsi, true);
3784 r = dss_mgr_enable(&dsi->output);
3786 goto err_mgr_enable;
3791 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3792 dsi_if_enable(dsi, false);
3793 dsi_vc_enable(dsi, channel, false);
3796 dsi_display_uninit_dispc(dsi);
3800 static void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel)
3802 struct dsi_data *dsi = to_dsi_data(dssdev);
3804 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3805 dsi_if_enable(dsi, false);
3806 dsi_vc_enable(dsi, channel, false);
3808 /* MODE, 0 = command mode */
3809 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 0, 4, 4);
3811 dsi_vc_enable(dsi, channel, true);
3812 dsi_if_enable(dsi, true);
3815 dss_mgr_disable(&dsi->output);
3817 dsi_display_uninit_dispc(dsi);
3820 static void dsi_update_screen_dispc(struct dsi_data *dsi)
3822 unsigned int bytespp;
3823 unsigned int bytespl;
3824 unsigned int bytespf;
3825 unsigned int total_len;
3826 unsigned int packet_payload;
3827 unsigned int packet_len;
3830 const unsigned channel = dsi->update_channel;
3831 const unsigned int line_buf_size = dsi->line_buffer_size;
3832 u16 w = dsi->vm.hactive;
3833 u16 h = dsi->vm.vactive;
3835 DSSDBG("dsi_update_screen_dispc(%dx%d)\n", w, h);
3837 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_VP);
3839 bytespp = dsi_get_pixel_size(dsi->pix_fmt) / 8;
3840 bytespl = w * bytespp;
3841 bytespf = bytespl * h;
3843 /* NOTE: packet_payload has to be equal to N * bytespl, where N is
3844 * number of lines in a packet. See errata about VP_CLK_RATIO */
3846 if (bytespf < line_buf_size)
3847 packet_payload = bytespf;
3849 packet_payload = (line_buf_size) / bytespl * bytespl;
3851 packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
3852 total_len = (bytespf / packet_payload) * packet_len;
3854 if (bytespf % packet_payload)
3855 total_len += (bytespf % packet_payload) + 1;
3857 l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
3858 dsi_write_reg(dsi, DSI_VC_TE(channel), l);
3860 dsi_vc_write_long_header(dsi, channel, MIPI_DSI_DCS_LONG_WRITE,
3863 if (dsi->te_enabled)
3864 l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
3866 l = FLD_MOD(l, 1, 31, 31); /* TE_START */
3867 dsi_write_reg(dsi, DSI_VC_TE(channel), l);
3869 /* We put SIDLEMODE to no-idle for the duration of the transfer,
3870 * because DSS interrupts are not capable of waking up the CPU and the
3871 * framedone interrupt could be delayed for quite a long time. I think
3872 * the same goes for any DSS interrupts, but for some reason I have not
3873 * seen the problem anywhere else than here.
3875 dispc_disable_sidle(dsi->dss->dispc);
3877 dsi_perf_mark_start(dsi);
3879 r = schedule_delayed_work(&dsi->framedone_timeout_work,
3880 msecs_to_jiffies(250));
3883 dss_mgr_start_update(&dsi->output);
3885 if (dsi->te_enabled) {
3886 /* disable LP_RX_TO, so that we can receive TE. Time to wait
3887 * for TE is longer than the timer allows */
3888 REG_FLD_MOD(dsi, DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
3890 dsi_vc_send_bta(dsi, channel);
3892 #ifdef DSI_CATCH_MISSING_TE
3893 mod_timer(&dsi->te_timer, jiffies + msecs_to_jiffies(250));
3898 #ifdef DSI_CATCH_MISSING_TE
3899 static void dsi_te_timeout(struct timer_list *unused)
3901 DSSERR("TE not received for 250ms!\n");
3905 static void dsi_handle_framedone(struct dsi_data *dsi, int error)
3907 /* SIDLEMODE back to smart-idle */
3908 dispc_enable_sidle(dsi->dss->dispc);
3910 if (dsi->te_enabled) {
3911 /* enable LP_RX_TO again after the TE */
3912 REG_FLD_MOD(dsi, DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
3915 dsi->framedone_callback(error, dsi->framedone_data);
3918 dsi_perf_show(dsi, "DISPC");
3921 static void dsi_framedone_timeout_work_callback(struct work_struct *work)
3923 struct dsi_data *dsi = container_of(work, struct dsi_data,
3924 framedone_timeout_work.work);
3925 /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
3926 * 250ms which would conflict with this timeout work. What should be
3927 * done is first cancel the transfer on the HW, and then cancel the
3928 * possibly scheduled framedone work. However, cancelling the transfer
3929 * on the HW is buggy, and would probably require resetting the whole
3932 DSSERR("Framedone not received for 250ms!\n");
3934 dsi_handle_framedone(dsi, -ETIMEDOUT);
3937 static void dsi_framedone_irq_callback(void *data)
3939 struct dsi_data *dsi = data;
3941 /* Note: We get FRAMEDONE when DISPC has finished sending pixels and
3942 * turns itself off. However, DSI still has the pixels in its buffers,
3943 * and is sending the data.
3946 cancel_delayed_work(&dsi->framedone_timeout_work);
3948 dsi_handle_framedone(dsi, 0);
3951 static int dsi_update(struct omap_dss_device *dssdev, int channel,
3952 void (*callback)(int, void *), void *data)
3954 struct dsi_data *dsi = to_dsi_data(dssdev);
3957 dsi_perf_mark_setup(dsi);
3959 dsi->update_channel = channel;
3961 dsi->framedone_callback = callback;
3962 dsi->framedone_data = data;
3964 dw = dsi->vm.hactive;
3965 dh = dsi->vm.vactive;
3967 #ifdef DSI_PERF_MEASURE
3968 dsi->update_bytes = dw * dh *
3969 dsi_get_pixel_size(dsi->pix_fmt) / 8;
3971 dsi_update_screen_dispc(dsi);
3978 static int dsi_configure_dispc_clocks(struct dsi_data *dsi)
3980 struct dispc_clock_info dispc_cinfo;
3984 fck = dsi_get_pll_hsdiv_dispc_rate(dsi);
3986 dispc_cinfo.lck_div = dsi->user_dispc_cinfo.lck_div;
3987 dispc_cinfo.pck_div = dsi->user_dispc_cinfo.pck_div;
3989 r = dispc_calc_clock_rates(dsi->dss->dispc, fck, &dispc_cinfo);
3991 DSSERR("Failed to calc dispc clocks\n");
3995 dsi->mgr_config.clock_info = dispc_cinfo;
4000 static int dsi_display_init_dispc(struct dsi_data *dsi)
4002 enum omap_channel channel = dsi->output.dispc_channel;
4005 dss_select_lcd_clk_source(dsi->dss, channel, dsi->module_id == 0 ?
4006 DSS_CLK_SRC_PLL1_1 :
4007 DSS_CLK_SRC_PLL2_1);
4009 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) {
4010 r = dss_mgr_register_framedone_handler(&dsi->output,
4011 dsi_framedone_irq_callback, dsi);
4013 DSSERR("can't register FRAMEDONE handler\n");
4017 dsi->mgr_config.stallmode = true;
4018 dsi->mgr_config.fifohandcheck = true;
4020 dsi->mgr_config.stallmode = false;
4021 dsi->mgr_config.fifohandcheck = false;
4024 r = dsi_configure_dispc_clocks(dsi);
4028 dsi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
4029 dsi->mgr_config.video_port_width =
4030 dsi_get_pixel_size(dsi->pix_fmt);
4031 dsi->mgr_config.lcden_sig_polarity = 0;
4033 dss_mgr_set_lcd_config(&dsi->output, &dsi->mgr_config);
4037 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4038 dss_mgr_unregister_framedone_handler(&dsi->output,
4039 dsi_framedone_irq_callback, dsi);
4041 dss_select_lcd_clk_source(dsi->dss, channel, DSS_CLK_SRC_FCK);
4045 static void dsi_display_uninit_dispc(struct dsi_data *dsi)
4047 enum omap_channel channel = dsi->output.dispc_channel;
4049 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4050 dss_mgr_unregister_framedone_handler(&dsi->output,
4051 dsi_framedone_irq_callback, dsi);
4053 dss_select_lcd_clk_source(dsi->dss, channel, DSS_CLK_SRC_FCK);
4056 static int dsi_configure_dsi_clocks(struct dsi_data *dsi)
4058 struct dss_pll_clock_info cinfo;
4061 cinfo = dsi->user_dsi_cinfo;
4063 r = dss_pll_set_config(&dsi->pll, &cinfo);
4065 DSSERR("Failed to set dsi clocks\n");
4072 static int dsi_display_init_dsi(struct dsi_data *dsi)
4076 r = dss_pll_enable(&dsi->pll);
4080 r = dsi_configure_dsi_clocks(dsi);
4084 dss_select_dsi_clk_source(dsi->dss, dsi->module_id,
4085 dsi->module_id == 0 ?
4086 DSS_CLK_SRC_PLL1_2 : DSS_CLK_SRC_PLL2_2);
4090 if (!dsi->vdds_dsi_enabled) {
4091 r = regulator_enable(dsi->vdds_dsi_reg);
4095 dsi->vdds_dsi_enabled = true;
4098 r = dsi_cio_init(dsi);
4102 _dsi_print_reset_status(dsi);
4104 dsi_proto_timings(dsi);
4105 dsi_set_lp_clk_divisor(dsi);
4108 _dsi_print_reset_status(dsi);
4110 r = dsi_proto_config(dsi);
4114 /* enable interface */
4115 dsi_vc_enable(dsi, 0, 1);
4116 dsi_vc_enable(dsi, 1, 1);
4117 dsi_vc_enable(dsi, 2, 1);
4118 dsi_vc_enable(dsi, 3, 1);
4119 dsi_if_enable(dsi, 1);
4120 dsi_force_tx_stop_mode_io(dsi);
4124 dsi_cio_uninit(dsi);
4126 regulator_disable(dsi->vdds_dsi_reg);
4127 dsi->vdds_dsi_enabled = false;
4129 dss_select_dsi_clk_source(dsi->dss, dsi->module_id, DSS_CLK_SRC_FCK);
4131 dss_pll_disable(&dsi->pll);
4136 static void dsi_display_uninit_dsi(struct dsi_data *dsi, bool disconnect_lanes,
4139 if (enter_ulps && !dsi->ulps_enabled)
4140 dsi_enter_ulps(dsi);
4142 /* disable interface */
4143 dsi_if_enable(dsi, 0);
4144 dsi_vc_enable(dsi, 0, 0);
4145 dsi_vc_enable(dsi, 1, 0);
4146 dsi_vc_enable(dsi, 2, 0);
4147 dsi_vc_enable(dsi, 3, 0);
4149 dss_select_dsi_clk_source(dsi->dss, dsi->module_id, DSS_CLK_SRC_FCK);
4150 dsi_cio_uninit(dsi);
4151 dss_pll_disable(&dsi->pll);
4153 if (disconnect_lanes) {
4154 regulator_disable(dsi->vdds_dsi_reg);
4155 dsi->vdds_dsi_enabled = false;
4159 static void dsi_display_enable(struct omap_dss_device *dssdev)
4161 struct dsi_data *dsi = to_dsi_data(dssdev);
4164 DSSDBG("dsi_display_enable\n");
4166 WARN_ON(!dsi_bus_is_locked(dsi));
4168 mutex_lock(&dsi->lock);
4170 r = dsi_runtime_get(dsi);
4174 _dsi_initialize_irq(dsi);
4176 r = dsi_display_init_dsi(dsi);
4180 mutex_unlock(&dsi->lock);
4185 dsi_runtime_put(dsi);
4187 mutex_unlock(&dsi->lock);
4188 DSSDBG("dsi_display_enable FAILED\n");
4191 static void dsi_display_disable(struct omap_dss_device *dssdev,
4192 bool disconnect_lanes, bool enter_ulps)
4194 struct dsi_data *dsi = to_dsi_data(dssdev);
4196 DSSDBG("dsi_display_disable\n");
4198 WARN_ON(!dsi_bus_is_locked(dsi));
4200 mutex_lock(&dsi->lock);
4202 dsi_sync_vc(dsi, 0);
4203 dsi_sync_vc(dsi, 1);
4204 dsi_sync_vc(dsi, 2);
4205 dsi_sync_vc(dsi, 3);
4207 dsi_display_uninit_dsi(dsi, disconnect_lanes, enter_ulps);
4209 dsi_runtime_put(dsi);
4211 mutex_unlock(&dsi->lock);
4214 static int dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
4216 struct dsi_data *dsi = to_dsi_data(dssdev);
4218 dsi->te_enabled = enable;
4222 #ifdef PRINT_VERBOSE_VM_TIMINGS
4223 static void print_dsi_vm(const char *str,
4224 const struct omap_dss_dsi_videomode_timings *t)
4226 unsigned long byteclk = t->hsclk / 4;
4227 int bl, wc, pps, tot;
4229 wc = DIV_ROUND_UP(t->hact * t->bitspp, 8);
4230 pps = DIV_ROUND_UP(wc + 6, t->ndl); /* pixel packet size */
4231 bl = t->hss + t->hsa + t->hse + t->hbp + t->hfp;
4234 #define TO_DSI_T(x) ((u32)div64_u64((u64)x * 1000000000llu, byteclk))
4236 pr_debug("%s bck %lu, %u/%u/%u/%u/%u/%u = %u+%u = %u, "
4237 "%u/%u/%u/%u/%u/%u = %u + %u = %u\n",
4240 t->hss, t->hsa, t->hse, t->hbp, pps, t->hfp,
4256 static void print_dispc_vm(const char *str, const struct videomode *vm)
4258 unsigned long pck = vm->pixelclock;
4262 bl = vm->hsync_len + vm->hback_porch + vm->hfront_porch;
4265 #define TO_DISPC_T(x) ((u32)div64_u64((u64)x * 1000000000llu, pck))
4267 pr_debug("%s pck %lu, %u/%u/%u/%u = %u+%u = %u, "
4268 "%u/%u/%u/%u = %u + %u = %u\n",
4271 vm->hsync_len, vm->hback_porch, hact, vm->hfront_porch,
4273 TO_DISPC_T(vm->hsync_len),
4274 TO_DISPC_T(vm->hback_porch),
4276 TO_DISPC_T(vm->hfront_porch),
4283 /* note: this is not quite accurate */
4284 static void print_dsi_dispc_vm(const char *str,
4285 const struct omap_dss_dsi_videomode_timings *t)
4287 struct videomode vm = { 0 };
4288 unsigned long byteclk = t->hsclk / 4;
4291 int dsi_hact, dsi_htot;
4293 dsi_tput = (u64)byteclk * t->ndl * 8;
4294 pck = (u32)div64_u64(dsi_tput, t->bitspp);
4295 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(t->hact * t->bitspp, 8) + 6, t->ndl);
4296 dsi_htot = t->hss + t->hsa + t->hse + t->hbp + dsi_hact + t->hfp;
4298 vm.pixelclock = pck;
4299 vm.hsync_len = div64_u64((u64)(t->hsa + t->hse) * pck, byteclk);
4300 vm.hback_porch = div64_u64((u64)t->hbp * pck, byteclk);
4301 vm.hfront_porch = div64_u64((u64)t->hfp * pck, byteclk);
4302 vm.hactive = t->hact;
4304 print_dispc_vm(str, &vm);
4306 #endif /* PRINT_VERBOSE_VM_TIMINGS */
4308 static bool dsi_cm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
4309 unsigned long pck, void *data)
4311 struct dsi_clk_calc_ctx *ctx = data;
4312 struct videomode *vm = &ctx->vm;
4314 ctx->dispc_cinfo.lck_div = lckd;
4315 ctx->dispc_cinfo.pck_div = pckd;
4316 ctx->dispc_cinfo.lck = lck;
4317 ctx->dispc_cinfo.pck = pck;
4319 *vm = *ctx->config->vm;
4320 vm->pixelclock = pck;
4321 vm->hactive = ctx->config->vm->hactive;
4322 vm->vactive = ctx->config->vm->vactive;
4323 vm->hsync_len = vm->hfront_porch = vm->hback_porch = vm->vsync_len = 1;
4324 vm->vfront_porch = vm->vback_porch = 0;
4329 static bool dsi_cm_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
4332 struct dsi_clk_calc_ctx *ctx = data;
4334 ctx->dsi_cinfo.mX[HSDIV_DISPC] = m_dispc;
4335 ctx->dsi_cinfo.clkout[HSDIV_DISPC] = dispc;
4337 return dispc_div_calc(ctx->dsi->dss->dispc, dispc,
4338 ctx->req_pck_min, ctx->req_pck_max,
4339 dsi_cm_calc_dispc_cb, ctx);
4342 static bool dsi_cm_calc_pll_cb(int n, int m, unsigned long fint,
4343 unsigned long clkdco, void *data)
4345 struct dsi_clk_calc_ctx *ctx = data;
4346 struct dsi_data *dsi = ctx->dsi;
4348 ctx->dsi_cinfo.n = n;
4349 ctx->dsi_cinfo.m = m;
4350 ctx->dsi_cinfo.fint = fint;
4351 ctx->dsi_cinfo.clkdco = clkdco;
4353 return dss_pll_hsdiv_calc_a(ctx->pll, clkdco, ctx->req_pck_min,
4354 dsi->data->max_fck_freq,
4355 dsi_cm_calc_hsdiv_cb, ctx);
4358 static bool dsi_cm_calc(struct dsi_data *dsi,
4359 const struct omap_dss_dsi_config *cfg,
4360 struct dsi_clk_calc_ctx *ctx)
4362 unsigned long clkin;
4364 unsigned long pll_min, pll_max;
4365 unsigned long pck, txbyteclk;
4367 clkin = clk_get_rate(dsi->pll.clkin);
4368 bitspp = dsi_get_pixel_size(cfg->pixel_format);
4369 ndl = dsi->num_lanes_used - 1;
4372 * Here we should calculate minimum txbyteclk to be able to send the
4373 * frame in time, and also to handle TE. That's not very simple, though,
4374 * especially as we go to LP between each pixel packet due to HW
4375 * "feature". So let's just estimate very roughly and multiply by 1.5.
4377 pck = cfg->vm->pixelclock;
4379 txbyteclk = pck * bitspp / 8 / ndl;
4381 memset(ctx, 0, sizeof(*ctx));
4383 ctx->pll = &dsi->pll;
4385 ctx->req_pck_min = pck;
4386 ctx->req_pck_nom = pck;
4387 ctx->req_pck_max = pck * 3 / 2;
4389 pll_min = max(cfg->hs_clk_min * 4, txbyteclk * 4 * 4);
4390 pll_max = cfg->hs_clk_max * 4;
4392 return dss_pll_calc_a(ctx->pll, clkin,
4394 dsi_cm_calc_pll_cb, ctx);
4397 static bool dsi_vm_calc_blanking(struct dsi_clk_calc_ctx *ctx)
4399 struct dsi_data *dsi = ctx->dsi;
4400 const struct omap_dss_dsi_config *cfg = ctx->config;
4401 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
4402 int ndl = dsi->num_lanes_used - 1;
4403 unsigned long hsclk = ctx->dsi_cinfo.clkdco / 4;
4404 unsigned long byteclk = hsclk / 4;
4406 unsigned long dispc_pck, req_pck_min, req_pck_nom, req_pck_max;
4408 int panel_htot, panel_hbl; /* pixels */
4409 int dispc_htot, dispc_hbl; /* pixels */
4410 int dsi_htot, dsi_hact, dsi_hbl, hss, hse; /* byteclks */
4412 const struct videomode *req_vm;
4413 struct videomode *dispc_vm;
4414 struct omap_dss_dsi_videomode_timings *dsi_vm;
4415 u64 dsi_tput, dispc_tput;
4417 dsi_tput = (u64)byteclk * ndl * 8;
4420 req_pck_min = ctx->req_pck_min;
4421 req_pck_max = ctx->req_pck_max;
4422 req_pck_nom = ctx->req_pck_nom;
4424 dispc_pck = ctx->dispc_cinfo.pck;
4425 dispc_tput = (u64)dispc_pck * bitspp;
4427 xres = req_vm->hactive;
4429 panel_hbl = req_vm->hfront_porch + req_vm->hback_porch +
4431 panel_htot = xres + panel_hbl;
4433 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(xres * bitspp, 8) + 6, ndl);
4436 * When there are no line buffers, DISPC and DSI must have the
4437 * same tput. Otherwise DISPC tput needs to be higher than DSI's.
4439 if (dsi->line_buffer_size < xres * bitspp / 8) {
4440 if (dispc_tput != dsi_tput)
4443 if (dispc_tput < dsi_tput)
4447 /* DSI tput must be over the min requirement */
4448 if (dsi_tput < (u64)bitspp * req_pck_min)
4451 /* When non-burst mode, DSI tput must be below max requirement. */
4452 if (cfg->trans_mode != OMAP_DSS_DSI_BURST_MODE) {
4453 if (dsi_tput > (u64)bitspp * req_pck_max)
4457 hss = DIV_ROUND_UP(4, ndl);
4459 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4460 if (ndl == 3 && req_vm->hsync_len == 0)
4463 hse = DIV_ROUND_UP(4, ndl);
4468 /* DSI htot to match the panel's nominal pck */
4469 dsi_htot = div64_u64((u64)panel_htot * byteclk, req_pck_nom);
4471 /* fail if there would be no time for blanking */
4472 if (dsi_htot < hss + hse + dsi_hact)
4475 /* total DSI blanking needed to achieve panel's TL */
4476 dsi_hbl = dsi_htot - dsi_hact;
4478 /* DISPC htot to match the DSI TL */
4479 dispc_htot = div64_u64((u64)dsi_htot * dispc_pck, byteclk);
4481 /* verify that the DSI and DISPC TLs are the same */
4482 if ((u64)dsi_htot * dispc_pck != (u64)dispc_htot * byteclk)
4485 dispc_hbl = dispc_htot - xres;
4487 /* setup DSI videomode */
4489 dsi_vm = &ctx->dsi_vm;
4490 memset(dsi_vm, 0, sizeof(*dsi_vm));
4492 dsi_vm->hsclk = hsclk;
4495 dsi_vm->bitspp = bitspp;
4497 if (cfg->trans_mode != OMAP_DSS_DSI_PULSE_MODE) {
4499 } else if (ndl == 3 && req_vm->hsync_len == 0) {
4502 hsa = div64_u64((u64)req_vm->hsync_len * byteclk, req_pck_nom);
4503 hsa = max(hsa - hse, 1);
4506 hbp = div64_u64((u64)req_vm->hback_porch * byteclk, req_pck_nom);
4509 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4512 /* we need to take cycles from hbp */
4515 hbp = max(hbp - t, 1);
4516 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4518 if (hfp < 1 && hsa > 0) {
4519 /* we need to take cycles from hsa */
4521 hsa = max(hsa - t, 1);
4522 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4533 dsi_vm->hact = xres;
4536 dsi_vm->vsa = req_vm->vsync_len;
4537 dsi_vm->vbp = req_vm->vback_porch;
4538 dsi_vm->vact = req_vm->vactive;
4539 dsi_vm->vfp = req_vm->vfront_porch;
4541 dsi_vm->trans_mode = cfg->trans_mode;
4543 dsi_vm->blanking_mode = 0;
4544 dsi_vm->hsa_blanking_mode = 1;
4545 dsi_vm->hfp_blanking_mode = 1;
4546 dsi_vm->hbp_blanking_mode = 1;
4548 dsi_vm->ddr_clk_always_on = cfg->ddr_clk_always_on;
4549 dsi_vm->window_sync = 4;
4551 /* setup DISPC videomode */
4553 dispc_vm = &ctx->vm;
4554 *dispc_vm = *req_vm;
4555 dispc_vm->pixelclock = dispc_pck;
4557 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4558 hsa = div64_u64((u64)req_vm->hsync_len * dispc_pck,
4565 hbp = div64_u64((u64)req_vm->hback_porch * dispc_pck, req_pck_nom);
4568 hfp = dispc_hbl - hsa - hbp;
4571 /* we need to take cycles from hbp */
4574 hbp = max(hbp - t, 1);
4575 hfp = dispc_hbl - hsa - hbp;
4578 /* we need to take cycles from hsa */
4580 hsa = max(hsa - t, 1);
4581 hfp = dispc_hbl - hsa - hbp;
4588 dispc_vm->hfront_porch = hfp;
4589 dispc_vm->hsync_len = hsa;
4590 dispc_vm->hback_porch = hbp;
4596 static bool dsi_vm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
4597 unsigned long pck, void *data)
4599 struct dsi_clk_calc_ctx *ctx = data;
4601 ctx->dispc_cinfo.lck_div = lckd;
4602 ctx->dispc_cinfo.pck_div = pckd;
4603 ctx->dispc_cinfo.lck = lck;
4604 ctx->dispc_cinfo.pck = pck;
4606 if (dsi_vm_calc_blanking(ctx) == false)
4609 #ifdef PRINT_VERBOSE_VM_TIMINGS
4610 print_dispc_vm("dispc", &ctx->vm);
4611 print_dsi_vm("dsi ", &ctx->dsi_vm);
4612 print_dispc_vm("req ", ctx->config->vm);
4613 print_dsi_dispc_vm("act ", &ctx->dsi_vm);
4619 static bool dsi_vm_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
4622 struct dsi_clk_calc_ctx *ctx = data;
4623 unsigned long pck_max;
4625 ctx->dsi_cinfo.mX[HSDIV_DISPC] = m_dispc;
4626 ctx->dsi_cinfo.clkout[HSDIV_DISPC] = dispc;
4629 * In burst mode we can let the dispc pck be arbitrarily high, but it
4630 * limits our scaling abilities. So for now, don't aim too high.
4633 if (ctx->config->trans_mode == OMAP_DSS_DSI_BURST_MODE)
4634 pck_max = ctx->req_pck_max + 10000000;
4636 pck_max = ctx->req_pck_max;
4638 return dispc_div_calc(ctx->dsi->dss->dispc, dispc,
4639 ctx->req_pck_min, pck_max,
4640 dsi_vm_calc_dispc_cb, ctx);
4643 static bool dsi_vm_calc_pll_cb(int n, int m, unsigned long fint,
4644 unsigned long clkdco, void *data)
4646 struct dsi_clk_calc_ctx *ctx = data;
4647 struct dsi_data *dsi = ctx->dsi;
4649 ctx->dsi_cinfo.n = n;
4650 ctx->dsi_cinfo.m = m;
4651 ctx->dsi_cinfo.fint = fint;
4652 ctx->dsi_cinfo.clkdco = clkdco;
4654 return dss_pll_hsdiv_calc_a(ctx->pll, clkdco, ctx->req_pck_min,
4655 dsi->data->max_fck_freq,
4656 dsi_vm_calc_hsdiv_cb, ctx);
4659 static bool dsi_vm_calc(struct dsi_data *dsi,
4660 const struct omap_dss_dsi_config *cfg,
4661 struct dsi_clk_calc_ctx *ctx)
4663 const struct videomode *vm = cfg->vm;
4664 unsigned long clkin;
4665 unsigned long pll_min;
4666 unsigned long pll_max;
4667 int ndl = dsi->num_lanes_used - 1;
4668 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
4669 unsigned long byteclk_min;
4671 clkin = clk_get_rate(dsi->pll.clkin);
4673 memset(ctx, 0, sizeof(*ctx));
4675 ctx->pll = &dsi->pll;
4678 /* these limits should come from the panel driver */
4679 ctx->req_pck_min = vm->pixelclock - 1000;
4680 ctx->req_pck_nom = vm->pixelclock;
4681 ctx->req_pck_max = vm->pixelclock + 1000;
4683 byteclk_min = div64_u64((u64)ctx->req_pck_min * bitspp, ndl * 8);
4684 pll_min = max(cfg->hs_clk_min * 4, byteclk_min * 4 * 4);
4686 if (cfg->trans_mode == OMAP_DSS_DSI_BURST_MODE) {
4687 pll_max = cfg->hs_clk_max * 4;
4689 unsigned long byteclk_max;
4690 byteclk_max = div64_u64((u64)ctx->req_pck_max * bitspp,
4693 pll_max = byteclk_max * 4 * 4;
4696 return dss_pll_calc_a(ctx->pll, clkin,
4698 dsi_vm_calc_pll_cb, ctx);
4701 static int dsi_set_config(struct omap_dss_device *dssdev,
4702 const struct omap_dss_dsi_config *config)
4704 struct dsi_data *dsi = to_dsi_data(dssdev);
4705 struct dsi_clk_calc_ctx ctx;
4709 mutex_lock(&dsi->lock);
4711 dsi->pix_fmt = config->pixel_format;
4712 dsi->mode = config->mode;
4714 if (config->mode == OMAP_DSS_DSI_VIDEO_MODE)
4715 ok = dsi_vm_calc(dsi, config, &ctx);
4717 ok = dsi_cm_calc(dsi, config, &ctx);
4720 DSSERR("failed to find suitable DSI clock settings\n");
4725 dsi_pll_calc_dsi_fck(dsi, &ctx.dsi_cinfo);
4727 r = dsi_lp_clock_calc(ctx.dsi_cinfo.clkout[HSDIV_DSI],
4728 config->lp_clk_min, config->lp_clk_max, &dsi->user_lp_cinfo);
4730 DSSERR("failed to find suitable DSI LP clock settings\n");
4734 dsi->user_dsi_cinfo = ctx.dsi_cinfo;
4735 dsi->user_dispc_cinfo = ctx.dispc_cinfo;
4740 * override interlace, logic level and edge related parameters in
4741 * videomode with default values
4743 dsi->vm.flags &= ~DISPLAY_FLAGS_INTERLACED;
4744 dsi->vm.flags &= ~DISPLAY_FLAGS_HSYNC_LOW;
4745 dsi->vm.flags |= DISPLAY_FLAGS_HSYNC_HIGH;
4746 dsi->vm.flags &= ~DISPLAY_FLAGS_VSYNC_LOW;
4747 dsi->vm.flags |= DISPLAY_FLAGS_VSYNC_HIGH;
4749 * HACK: These flags should be handled through the omap_dss_device bus
4750 * flags, but this will only be possible when the DSI encoder will be
4751 * converted to the omapdrm-managed encoder model.
4753 dsi->vm.flags &= ~DISPLAY_FLAGS_PIXDATA_NEGEDGE;
4754 dsi->vm.flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
4755 dsi->vm.flags &= ~DISPLAY_FLAGS_DE_LOW;
4756 dsi->vm.flags |= DISPLAY_FLAGS_DE_HIGH;
4757 dsi->vm.flags &= ~DISPLAY_FLAGS_SYNC_POSEDGE;
4758 dsi->vm.flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
4760 dss_mgr_set_timings(&dsi->output, &dsi->vm);
4762 dsi->vm_timings = ctx.dsi_vm;
4764 mutex_unlock(&dsi->lock);
4768 mutex_unlock(&dsi->lock);
4774 * Return a hardcoded channel for the DSI output. This should work for
4775 * current use cases, but this can be later expanded to either resolve
4776 * the channel in some more dynamic manner, or get the channel as a user
4779 static enum omap_channel dsi_get_channel(struct dsi_data *dsi)
4781 switch (dsi->data->model) {
4782 case DSI_MODEL_OMAP3:
4783 return OMAP_DSS_CHANNEL_LCD;
4785 case DSI_MODEL_OMAP4:
4786 switch (dsi->module_id) {
4788 return OMAP_DSS_CHANNEL_LCD;
4790 return OMAP_DSS_CHANNEL_LCD2;
4792 DSSWARN("unsupported module id\n");
4793 return OMAP_DSS_CHANNEL_LCD;
4796 case DSI_MODEL_OMAP5:
4797 switch (dsi->module_id) {
4799 return OMAP_DSS_CHANNEL_LCD;
4801 return OMAP_DSS_CHANNEL_LCD3;
4803 DSSWARN("unsupported module id\n");
4804 return OMAP_DSS_CHANNEL_LCD;
4808 DSSWARN("unsupported DSS version\n");
4809 return OMAP_DSS_CHANNEL_LCD;
4813 static int dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
4815 struct dsi_data *dsi = to_dsi_data(dssdev);
4818 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
4819 if (!dsi->vc[i].dssdev) {
4820 dsi->vc[i].dssdev = dssdev;
4826 DSSERR("cannot get VC for display %s", dssdev->name);
4830 static int dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
4832 struct dsi_data *dsi = to_dsi_data(dssdev);
4834 if (vc_id < 0 || vc_id > 3) {
4835 DSSERR("VC ID out of range\n");
4839 if (channel < 0 || channel > 3) {
4840 DSSERR("Virtual Channel out of range\n");
4844 if (dsi->vc[channel].dssdev != dssdev) {
4845 DSSERR("Virtual Channel not allocated to display %s\n",
4850 dsi->vc[channel].vc_id = vc_id;
4855 static void dsi_release_vc(struct omap_dss_device *dssdev, int channel)
4857 struct dsi_data *dsi = to_dsi_data(dssdev);
4859 if ((channel >= 0 && channel <= 3) &&
4860 dsi->vc[channel].dssdev == dssdev) {
4861 dsi->vc[channel].dssdev = NULL;
4862 dsi->vc[channel].vc_id = 0;
4867 static int dsi_get_clocks(struct dsi_data *dsi)
4871 clk = devm_clk_get(dsi->dev, "fck");
4873 DSSERR("can't get fck\n");
4874 return PTR_ERR(clk);
4882 static int dsi_connect(struct omap_dss_device *src,
4883 struct omap_dss_device *dst)
4885 return omapdss_device_connect(dst->dss, dst, dst->next);
4888 static void dsi_disconnect(struct omap_dss_device *src,
4889 struct omap_dss_device *dst)
4891 omapdss_device_disconnect(dst, dst->next);
4894 static const struct omap_dss_device_ops dsi_ops = {
4895 .connect = dsi_connect,
4896 .disconnect = dsi_disconnect,
4897 .enable = dsi_display_enable,
4900 .bus_lock = dsi_bus_lock,
4901 .bus_unlock = dsi_bus_unlock,
4903 .disable = dsi_display_disable,
4905 .enable_hs = dsi_vc_enable_hs,
4907 .configure_pins = dsi_configure_pins,
4908 .set_config = dsi_set_config,
4910 .enable_video_output = dsi_enable_video_output,
4911 .disable_video_output = dsi_disable_video_output,
4913 .update = dsi_update,
4915 .enable_te = dsi_enable_te,
4917 .request_vc = dsi_request_vc,
4918 .set_vc_id = dsi_set_vc_id,
4919 .release_vc = dsi_release_vc,
4921 .dcs_write = dsi_vc_dcs_write,
4922 .dcs_write_nosync = dsi_vc_dcs_write_nosync,
4923 .dcs_read = dsi_vc_dcs_read,
4925 .gen_write = dsi_vc_generic_write,
4926 .gen_write_nosync = dsi_vc_generic_write_nosync,
4927 .gen_read = dsi_vc_generic_read,
4929 .bta_sync = dsi_vc_send_bta_sync,
4931 .set_max_rx_packet_size = dsi_vc_set_max_rx_packet_size,
4935 /* -----------------------------------------------------------------------------
4939 static const struct dss_pll_ops dsi_pll_ops = {
4940 .enable = dsi_pll_enable,
4941 .disable = dsi_pll_disable,
4942 .set_config = dss_pll_write_config_type_a,
4945 static const struct dss_pll_hw dss_omap3_dsi_pll_hw = {
4946 .type = DSS_PLL_TYPE_A,
4948 .n_max = (1 << 7) - 1,
4949 .m_max = (1 << 11) - 1,
4950 .mX_max = (1 << 4) - 1,
4952 .fint_max = 2100000,
4953 .clkdco_low = 1000000000,
4954 .clkdco_max = 1800000000,
4966 .has_stopmode = true,
4967 .has_freqsel = true,
4968 .has_selfreqdco = false,
4969 .has_refsel = false,
4972 static const struct dss_pll_hw dss_omap4_dsi_pll_hw = {
4973 .type = DSS_PLL_TYPE_A,
4975 .n_max = (1 << 8) - 1,
4976 .m_max = (1 << 12) - 1,
4977 .mX_max = (1 << 5) - 1,
4979 .fint_max = 2500000,
4980 .clkdco_low = 1000000000,
4981 .clkdco_max = 1800000000,
4993 .has_stopmode = true,
4994 .has_freqsel = false,
4995 .has_selfreqdco = false,
4996 .has_refsel = false,
4999 static const struct dss_pll_hw dss_omap5_dsi_pll_hw = {
5000 .type = DSS_PLL_TYPE_A,
5002 .n_max = (1 << 8) - 1,
5003 .m_max = (1 << 12) - 1,
5004 .mX_max = (1 << 5) - 1,
5006 .fint_max = 52000000,
5007 .clkdco_low = 1000000000,
5008 .clkdco_max = 1800000000,
5020 .has_stopmode = true,
5021 .has_freqsel = false,
5022 .has_selfreqdco = true,
5026 static int dsi_init_pll_data(struct dss_device *dss, struct dsi_data *dsi)
5028 struct dss_pll *pll = &dsi->pll;
5032 clk = devm_clk_get(dsi->dev, "sys_clk");
5034 DSSERR("can't get sys_clk\n");
5035 return PTR_ERR(clk);
5038 pll->name = dsi->module_id == 0 ? "dsi0" : "dsi1";
5039 pll->id = dsi->module_id == 0 ? DSS_PLL_DSI1 : DSS_PLL_DSI2;
5041 pll->base = dsi->pll_base;
5042 pll->hw = dsi->data->pll_hw;
5043 pll->ops = &dsi_pll_ops;
5045 r = dss_pll_register(dss, pll);
5052 /* -----------------------------------------------------------------------------
5053 * Component Bind & Unbind
5056 static int dsi_bind(struct device *dev, struct device *master, void *data)
5058 struct dss_device *dss = dss_get_device(master);
5059 struct dsi_data *dsi = dev_get_drvdata(dev);
5066 dsi_init_pll_data(dss, dsi);
5068 r = dsi_runtime_get(dsi);
5072 rev = dsi_read_reg(dsi, DSI_REVISION);
5073 dev_dbg(dev, "OMAP DSI rev %d.%d\n",
5074 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
5076 dsi->line_buffer_size = dsi_get_line_buf_size(dsi);
5078 dsi_runtime_put(dsi);
5080 snprintf(name, sizeof(name), "dsi%u_regs", dsi->module_id + 1);
5081 dsi->debugfs.regs = dss_debugfs_create_file(dss, name,
5082 dsi_dump_dsi_regs, dsi);
5083 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5084 snprintf(name, sizeof(name), "dsi%u_irqs", dsi->module_id + 1);
5085 dsi->debugfs.irqs = dss_debugfs_create_file(dss, name,
5086 dsi_dump_dsi_irqs, dsi);
5088 snprintf(name, sizeof(name), "dsi%u_clks", dsi->module_id + 1);
5089 dsi->debugfs.clks = dss_debugfs_create_file(dss, name,
5090 dsi_dump_dsi_clocks, dsi);
5095 static void dsi_unbind(struct device *dev, struct device *master, void *data)
5097 struct dsi_data *dsi = dev_get_drvdata(dev);
5099 dss_debugfs_remove_file(dsi->debugfs.clks);
5100 dss_debugfs_remove_file(dsi->debugfs.irqs);
5101 dss_debugfs_remove_file(dsi->debugfs.regs);
5103 WARN_ON(dsi->scp_clk_refcount > 0);
5105 dss_pll_unregister(&dsi->pll);
5108 static const struct component_ops dsi_component_ops = {
5110 .unbind = dsi_unbind,
5113 /* -----------------------------------------------------------------------------
5114 * Probe & Remove, Suspend & Resume
5117 static int dsi_init_output(struct dsi_data *dsi)
5119 struct omap_dss_device *out = &dsi->output;
5122 out->dev = dsi->dev;
5123 out->id = dsi->module_id == 0 ?
5124 OMAP_DSS_OUTPUT_DSI1 : OMAP_DSS_OUTPUT_DSI2;
5126 out->type = OMAP_DISPLAY_TYPE_DSI;
5127 out->name = dsi->module_id == 0 ? "dsi.0" : "dsi.1";
5128 out->dispc_channel = dsi_get_channel(dsi);
5129 out->ops = &dsi_ops;
5130 out->owner = THIS_MODULE;
5131 out->of_ports = BIT(0);
5132 out->bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE
5133 | DRM_BUS_FLAG_DE_HIGH
5134 | DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE;
5136 r = omapdss_device_init_output(out);
5140 omapdss_device_register(out);
5145 static void dsi_uninit_output(struct dsi_data *dsi)
5147 struct omap_dss_device *out = &dsi->output;
5149 omapdss_device_unregister(out);
5150 omapdss_device_cleanup_output(out);
5153 static int dsi_probe_of(struct dsi_data *dsi)
5155 struct device_node *node = dsi->dev->of_node;
5156 struct property *prop;
5160 struct device_node *ep;
5161 struct omap_dsi_pin_config pin_cfg;
5163 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
5167 prop = of_find_property(ep, "lanes", &len);
5169 dev_err(dsi->dev, "failed to find lane data\n");
5174 num_pins = len / sizeof(u32);
5176 if (num_pins < 4 || num_pins % 2 != 0 ||
5177 num_pins > dsi->num_lanes_supported * 2) {
5178 dev_err(dsi->dev, "bad number of lanes\n");
5183 r = of_property_read_u32_array(ep, "lanes", lane_arr, num_pins);
5185 dev_err(dsi->dev, "failed to read lane data\n");
5189 pin_cfg.num_pins = num_pins;
5190 for (i = 0; i < num_pins; ++i)
5191 pin_cfg.pins[i] = (int)lane_arr[i];
5193 r = dsi_configure_pins(&dsi->output, &pin_cfg);
5195 dev_err(dsi->dev, "failed to configure pins");
5208 static const struct dsi_of_data dsi_of_data_omap34xx = {
5209 .model = DSI_MODEL_OMAP3,
5210 .pll_hw = &dss_omap3_dsi_pll_hw,
5211 .modules = (const struct dsi_module_id_data[]) {
5212 { .address = 0x4804fc00, .id = 0, },
5215 .max_fck_freq = 173000000,
5216 .max_pll_lpdiv = (1 << 13) - 1,
5217 .quirks = DSI_QUIRK_REVERSE_TXCLKESC,
5220 static const struct dsi_of_data dsi_of_data_omap36xx = {
5221 .model = DSI_MODEL_OMAP3,
5222 .pll_hw = &dss_omap3_dsi_pll_hw,
5223 .modules = (const struct dsi_module_id_data[]) {
5224 { .address = 0x4804fc00, .id = 0, },
5227 .max_fck_freq = 173000000,
5228 .max_pll_lpdiv = (1 << 13) - 1,
5229 .quirks = DSI_QUIRK_PLL_PWR_BUG,
5232 static const struct dsi_of_data dsi_of_data_omap4 = {
5233 .model = DSI_MODEL_OMAP4,
5234 .pll_hw = &dss_omap4_dsi_pll_hw,
5235 .modules = (const struct dsi_module_id_data[]) {
5236 { .address = 0x58004000, .id = 0, },
5237 { .address = 0x58005000, .id = 1, },
5240 .max_fck_freq = 170000000,
5241 .max_pll_lpdiv = (1 << 13) - 1,
5242 .quirks = DSI_QUIRK_DCS_CMD_CONFIG_VC | DSI_QUIRK_VC_OCP_WIDTH
5246 static const struct dsi_of_data dsi_of_data_omap5 = {
5247 .model = DSI_MODEL_OMAP5,
5248 .pll_hw = &dss_omap5_dsi_pll_hw,
5249 .modules = (const struct dsi_module_id_data[]) {
5250 { .address = 0x58004000, .id = 0, },
5251 { .address = 0x58009000, .id = 1, },
5254 .max_fck_freq = 209250000,
5255 .max_pll_lpdiv = (1 << 13) - 1,
5256 .quirks = DSI_QUIRK_DCS_CMD_CONFIG_VC | DSI_QUIRK_VC_OCP_WIDTH
5257 | DSI_QUIRK_GNQ | DSI_QUIRK_PHY_DCC,
5260 static const struct of_device_id dsi_of_match[] = {
5261 { .compatible = "ti,omap3-dsi", .data = &dsi_of_data_omap36xx, },
5262 { .compatible = "ti,omap4-dsi", .data = &dsi_of_data_omap4, },
5263 { .compatible = "ti,omap5-dsi", .data = &dsi_of_data_omap5, },
5267 static const struct soc_device_attribute dsi_soc_devices[] = {
5268 { .machine = "OMAP3[45]*", .data = &dsi_of_data_omap34xx },
5269 { .machine = "AM35*", .data = &dsi_of_data_omap34xx },
5273 static int dsi_probe(struct platform_device *pdev)
5275 const struct soc_device_attribute *soc;
5276 const struct dsi_module_id_data *d;
5277 struct device *dev = &pdev->dev;
5278 struct dsi_data *dsi;
5279 struct resource *dsi_mem;
5280 struct resource *res;
5284 dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
5289 dev_set_drvdata(dev, dsi);
5291 spin_lock_init(&dsi->irq_lock);
5292 spin_lock_init(&dsi->errors_lock);
5295 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5296 spin_lock_init(&dsi->irq_stats_lock);
5297 dsi->irq_stats.last_reset = jiffies;
5300 mutex_init(&dsi->lock);
5301 sema_init(&dsi->bus_lock, 1);
5303 INIT_DEFERRABLE_WORK(&dsi->framedone_timeout_work,
5304 dsi_framedone_timeout_work_callback);
5306 #ifdef DSI_CATCH_MISSING_TE
5307 timer_setup(&dsi->te_timer, dsi_te_timeout, 0);
5310 dsi_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "proto");
5311 dsi->proto_base = devm_ioremap_resource(dev, dsi_mem);
5312 if (IS_ERR(dsi->proto_base))
5313 return PTR_ERR(dsi->proto_base);
5315 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
5316 dsi->phy_base = devm_ioremap_resource(dev, res);
5317 if (IS_ERR(dsi->phy_base))
5318 return PTR_ERR(dsi->phy_base);
5320 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll");
5321 dsi->pll_base = devm_ioremap_resource(dev, res);
5322 if (IS_ERR(dsi->pll_base))
5323 return PTR_ERR(dsi->pll_base);
5325 dsi->irq = platform_get_irq(pdev, 0);
5327 DSSERR("platform_get_irq failed\n");
5331 r = devm_request_irq(dev, dsi->irq, omap_dsi_irq_handler,
5332 IRQF_SHARED, dev_name(dev), dsi);
5334 DSSERR("request_irq failed\n");
5338 dsi->vdds_dsi_reg = devm_regulator_get(dev, "vdd");
5339 if (IS_ERR(dsi->vdds_dsi_reg)) {
5340 if (PTR_ERR(dsi->vdds_dsi_reg) != -EPROBE_DEFER)
5341 DSSERR("can't get DSI VDD regulator\n");
5342 return PTR_ERR(dsi->vdds_dsi_reg);
5345 soc = soc_device_match(dsi_soc_devices);
5347 dsi->data = soc->data;
5349 dsi->data = of_match_node(dsi_of_match, dev->of_node)->data;
5351 d = dsi->data->modules;
5352 while (d->address != 0 && d->address != dsi_mem->start)
5355 if (d->address == 0) {
5356 DSSERR("unsupported DSI module\n");
5360 dsi->module_id = d->id;
5362 if (dsi->data->model == DSI_MODEL_OMAP4 ||
5363 dsi->data->model == DSI_MODEL_OMAP5) {
5364 struct device_node *np;
5367 * The OMAP4/5 display DT bindings don't reference the padconf
5368 * syscon. Our only option to retrieve it is to find it by name.
5370 np = of_find_node_by_name(NULL,
5371 dsi->data->model == DSI_MODEL_OMAP4 ?
5372 "omap4_padconf_global" : "omap5_padconf_global");
5376 dsi->syscon = syscon_node_to_regmap(np);
5380 /* DSI VCs initialization */
5381 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
5382 dsi->vc[i].source = DSI_VC_SOURCE_L4;
5383 dsi->vc[i].dssdev = NULL;
5384 dsi->vc[i].vc_id = 0;
5387 r = dsi_get_clocks(dsi);
5391 pm_runtime_enable(dev);
5393 /* DSI on OMAP3 doesn't have register DSI_GNQ, set number
5394 * of data to 3 by default */
5395 if (dsi->data->quirks & DSI_QUIRK_GNQ) {
5396 dsi_runtime_get(dsi);
5398 dsi->num_lanes_supported = 1 + REG_GET(dsi, DSI_GNQ, 11, 9);
5399 dsi_runtime_put(dsi);
5401 dsi->num_lanes_supported = 3;
5404 r = of_platform_populate(dev->of_node, NULL, NULL, dev);
5406 DSSERR("Failed to populate DSI child devices: %d\n", r);
5407 goto err_pm_disable;
5410 r = dsi_init_output(dsi);
5412 goto err_of_depopulate;
5414 r = dsi_probe_of(dsi);
5416 DSSERR("Invalid DSI DT data\n");
5417 goto err_uninit_output;
5420 r = component_add(&pdev->dev, &dsi_component_ops);
5422 goto err_uninit_output;
5427 dsi_uninit_output(dsi);
5429 of_platform_depopulate(dev);
5431 pm_runtime_disable(dev);
5435 static int dsi_remove(struct platform_device *pdev)
5437 struct dsi_data *dsi = platform_get_drvdata(pdev);
5439 component_del(&pdev->dev, &dsi_component_ops);
5441 dsi_uninit_output(dsi);
5443 of_platform_depopulate(&pdev->dev);
5445 pm_runtime_disable(&pdev->dev);
5447 if (dsi->vdds_dsi_reg != NULL && dsi->vdds_dsi_enabled) {
5448 regulator_disable(dsi->vdds_dsi_reg);
5449 dsi->vdds_dsi_enabled = false;
5455 static int dsi_runtime_suspend(struct device *dev)
5457 struct dsi_data *dsi = dev_get_drvdata(dev);
5459 dsi->is_enabled = false;
5460 /* ensure the irq handler sees the is_enabled value */
5462 /* wait for current handler to finish before turning the DSI off */
5463 synchronize_irq(dsi->irq);
5468 static int dsi_runtime_resume(struct device *dev)
5470 struct dsi_data *dsi = dev_get_drvdata(dev);
5472 dsi->is_enabled = true;
5473 /* ensure the irq handler sees the is_enabled value */
5479 static const struct dev_pm_ops dsi_pm_ops = {
5480 .runtime_suspend = dsi_runtime_suspend,
5481 .runtime_resume = dsi_runtime_resume,
5484 struct platform_driver omap_dsihw_driver = {
5486 .remove = dsi_remove,
5488 .name = "omapdss_dsi",
5490 .of_match_table = dsi_of_match,
5491 .suppress_bind_attrs = true,