2 * Driver for Samsung S5K5BAF UXGA 1/5" 2M CMOS Image Sensor
3 * with embedded SoC ISP.
5 * Copyright (C) 2013, Samsung Electronics Co., Ltd.
6 * Andrzej Hajda <a.hajda@samsung.com>
8 * Based on S5K6AA driver authored by Sylwester Nawrocki
9 * Copyright (C) 2013, Samsung Electronics Co., Ltd.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/clk.h>
17 #include <linux/delay.h>
18 #include <linux/firmware.h>
19 #include <linux/gpio.h>
20 #include <linux/i2c.h>
21 #include <linux/media.h>
22 #include <linux/module.h>
23 #include <linux/of_gpio.h>
24 #include <linux/regulator/consumer.h>
25 #include <linux/slab.h>
27 #include <media/media-entity.h>
28 #include <media/v4l2-ctrls.h>
29 #include <media/v4l2-device.h>
30 #include <media/v4l2-subdev.h>
31 #include <media/v4l2-mediabus.h>
32 #include <media/v4l2-of.h>
35 module_param(debug, int, 0644);
37 #define S5K5BAF_DRIVER_NAME "s5k5baf"
38 #define S5K5BAF_DEFAULT_MCLK_FREQ 24000000U
39 #define S5K5BAF_CLK_NAME "mclk"
41 #define S5K5BAF_FW_FILENAME "s5k5baf-cfg.bin"
42 #define S5K5BAF_FW_TAG "SF00"
43 #define S5K5BAG_FW_TAG_LEN 2
44 #define S5K5BAG_FW_MAX_COUNT 16
46 #define S5K5BAF_CIS_WIDTH 1600
47 #define S5K5BAF_CIS_HEIGHT 1200
48 #define S5K5BAF_WIN_WIDTH_MIN 8
49 #define S5K5BAF_WIN_HEIGHT_MIN 8
50 #define S5K5BAF_GAIN_RED_DEF 127
51 #define S5K5BAF_GAIN_GREEN_DEF 95
52 #define S5K5BAF_GAIN_BLUE_DEF 180
53 /* Default number of MIPI CSI-2 data lanes used */
54 #define S5K5BAF_DEF_NUM_LANES 1
56 #define AHB_MSB_ADDR_PTR 0xfcfc
59 * Register interface pages (the most significant word of the address)
61 #define PAGE_IF_HW 0xd000
62 #define PAGE_IF_SW 0x7000
65 * H/W register Interface (PAGE_IF_HW)
67 #define REG_SW_LOAD_COMPLETE 0x0014
68 #define REG_CMDWR_PAGE 0x0028
69 #define REG_CMDWR_ADDR 0x002a
70 #define REG_CMDRD_PAGE 0x002c
71 #define REG_CMDRD_ADDR 0x002e
72 #define REG_CMD_BUF 0x0f12
73 #define REG_SET_HOST_INT 0x1000
74 #define REG_CLEAR_HOST_INT 0x1030
75 #define REG_PATTERN_SET 0x3100
76 #define REG_PATTERN_WIDTH 0x3118
77 #define REG_PATTERN_HEIGHT 0x311a
78 #define REG_PATTERN_PARAM 0x311c
81 * S/W register interface (PAGE_IF_SW)
84 /* Firmware revision information */
85 #define REG_FW_APIVER 0x012e
86 #define S5K5BAF_FW_APIVER 0x0001
87 #define REG_FW_REVISION 0x0130
88 #define REG_FW_SENSOR_ID 0x0152
90 /* Initialization parameters */
91 /* Master clock frequency in KHz */
92 #define REG_I_INCLK_FREQ_L 0x01b8
93 #define REG_I_INCLK_FREQ_H 0x01ba
94 #define MIN_MCLK_FREQ_KHZ 6000U
95 #define MAX_MCLK_FREQ_KHZ 48000U
96 #define REG_I_USE_NPVI_CLOCKS 0x01c6
98 #define REG_I_USE_NMIPI_CLOCKS 0x01c8
99 #define NMIPI_CLOCKS 1
100 #define REG_I_BLOCK_INTERNAL_PLL_CALC 0x01ca
102 /* Clock configurations, n = 0..2. REG_I_* frequency unit is 4 kHz. */
103 #define REG_I_OPCLK_4KHZ(n) ((n) * 6 + 0x01cc)
104 #define REG_I_MIN_OUTRATE_4KHZ(n) ((n) * 6 + 0x01ce)
105 #define REG_I_MAX_OUTRATE_4KHZ(n) ((n) * 6 + 0x01d0)
106 #define SCLK_PVI_FREQ 24000
107 #define SCLK_MIPI_FREQ 48000
108 #define PCLK_MIN_FREQ 6000
109 #define PCLK_MAX_FREQ 48000
110 #define REG_I_USE_REGS_API 0x01de
111 #define REG_I_INIT_PARAMS_UPDATED 0x01e0
112 #define REG_I_ERROR_INFO 0x01e2
114 /* General purpose parameters */
115 #define REG_USER_BRIGHTNESS 0x01e4
116 #define REG_USER_CONTRAST 0x01e6
117 #define REG_USER_SATURATION 0x01e8
118 #define REG_USER_SHARPBLUR 0x01ea
120 #define REG_G_SPEC_EFFECTS 0x01ee
121 #define REG_G_ENABLE_PREV 0x01f0
122 #define REG_G_ENABLE_PREV_CHG 0x01f2
123 #define REG_G_NEW_CFG_SYNC 0x01f8
124 #define REG_G_PREVREQ_IN_WIDTH 0x01fa
125 #define REG_G_PREVREQ_IN_HEIGHT 0x01fc
126 #define REG_G_PREVREQ_IN_XOFFS 0x01fe
127 #define REG_G_PREVREQ_IN_YOFFS 0x0200
128 #define REG_G_PREVZOOM_IN_WIDTH 0x020a
129 #define REG_G_PREVZOOM_IN_HEIGHT 0x020c
130 #define REG_G_PREVZOOM_IN_XOFFS 0x020e
131 #define REG_G_PREVZOOM_IN_YOFFS 0x0210
132 #define REG_G_INPUTS_CHANGE_REQ 0x021a
133 #define REG_G_ACTIVE_PREV_CFG 0x021c
134 #define REG_G_PREV_CFG_CHG 0x021e
135 #define REG_G_PREV_OPEN_AFTER_CH 0x0220
136 #define REG_G_PREV_CFG_ERROR 0x0222
137 #define CFG_ERROR_RANGE 0x0b
138 #define REG_G_PREV_CFG_BYPASS_CHANGED 0x022a
139 #define REG_G_ACTUAL_P_FR_TIME 0x023a
140 #define REG_G_ACTUAL_P_OUT_RATE 0x023c
141 #define REG_G_ACTUAL_C_FR_TIME 0x023e
142 #define REG_G_ACTUAL_C_OUT_RATE 0x0240
144 /* Preview control section. n = 0...4. */
145 #define PREG(n, x) ((n) * 0x26 + x)
146 #define REG_P_OUT_WIDTH(n) PREG(n, 0x0242)
147 #define REG_P_OUT_HEIGHT(n) PREG(n, 0x0244)
148 #define REG_P_FMT(n) PREG(n, 0x0246)
149 #define REG_P_MAX_OUT_RATE(n) PREG(n, 0x0248)
150 #define REG_P_MIN_OUT_RATE(n) PREG(n, 0x024a)
151 #define REG_P_PVI_MASK(n) PREG(n, 0x024c)
152 #define PVI_MASK_MIPI 0x52
153 #define REG_P_CLK_INDEX(n) PREG(n, 0x024e)
154 #define CLK_PVI_INDEX 0
155 #define CLK_MIPI_INDEX NPVI_CLOCKS
156 #define REG_P_FR_RATE_TYPE(n) PREG(n, 0x0250)
157 #define FR_RATE_DYNAMIC 0
158 #define FR_RATE_FIXED 1
159 #define FR_RATE_FIXED_ACCURATE 2
160 #define REG_P_FR_RATE_Q_TYPE(n) PREG(n, 0x0252)
161 #define FR_RATE_Q_DYNAMIC 0
162 #define FR_RATE_Q_BEST_FRRATE 1 /* Binning enabled */
163 #define FR_RATE_Q_BEST_QUALITY 2 /* Binning disabled */
164 /* Frame period in 0.1 ms units */
165 #define REG_P_MAX_FR_TIME(n) PREG(n, 0x0254)
166 #define REG_P_MIN_FR_TIME(n) PREG(n, 0x0256)
167 #define S5K5BAF_MIN_FR_TIME 333 /* x100 us */
168 #define S5K5BAF_MAX_FR_TIME 6500 /* x100 us */
169 /* The below 5 registers are for "device correction" values */
170 #define REG_P_SATURATION(n) PREG(n, 0x0258)
171 #define REG_P_SHARP_BLUR(n) PREG(n, 0x025a)
172 #define REG_P_GLAMOUR(n) PREG(n, 0x025c)
173 #define REG_P_COLORTEMP(n) PREG(n, 0x025e)
174 #define REG_P_GAMMA_INDEX(n) PREG(n, 0x0260)
175 #define REG_P_PREV_MIRROR(n) PREG(n, 0x0262)
176 #define REG_P_CAP_MIRROR(n) PREG(n, 0x0264)
177 #define REG_P_CAP_ROTATION(n) PREG(n, 0x0266)
179 /* Extended image property controls */
180 /* Exposure time in 10 us units */
181 #define REG_SF_USR_EXPOSURE_L 0x03bc
182 #define REG_SF_USR_EXPOSURE_H 0x03be
183 #define REG_SF_USR_EXPOSURE_CHG 0x03c0
184 #define REG_SF_USR_TOT_GAIN 0x03c2
185 #define REG_SF_USR_TOT_GAIN_CHG 0x03c4
186 #define REG_SF_RGAIN 0x03c6
187 #define REG_SF_RGAIN_CHG 0x03c8
188 #define REG_SF_GGAIN 0x03ca
189 #define REG_SF_GGAIN_CHG 0x03cc
190 #define REG_SF_BGAIN 0x03ce
191 #define REG_SF_BGAIN_CHG 0x03d0
192 #define REG_SF_WBGAIN_CHG 0x03d2
193 #define REG_SF_FLICKER_QUANT 0x03d4
194 #define REG_SF_FLICKER_QUANT_CHG 0x03d6
196 /* Output interface (parallel/MIPI) setup */
197 #define REG_OIF_EN_MIPI_LANES 0x03f2
198 #define REG_OIF_EN_PACKETS 0x03f4
199 #define EN_PACKETS_CSI2 0xc3
200 #define REG_OIF_CFG_CHG 0x03f6
202 /* Auto-algorithms enable mask */
203 #define REG_DBG_AUTOALG_EN 0x03f8
204 #define AALG_ALL_EN BIT(0)
205 #define AALG_AE_EN BIT(1)
206 #define AALG_DIVLEI_EN BIT(2)
207 #define AALG_WB_EN BIT(3)
208 #define AALG_USE_WB_FOR_ISP BIT(4)
209 #define AALG_FLICKER_EN BIT(5)
210 #define AALG_FIT_EN BIT(6)
211 #define AALG_WRHW_EN BIT(7)
213 /* Pointers to color correction matrices */
214 #define REG_PTR_CCM_HORIZON 0x06d0
215 #define REG_PTR_CCM_INCANDESCENT 0x06d4
216 #define REG_PTR_CCM_WARM_WHITE 0x06d8
217 #define REG_PTR_CCM_COOL_WHITE 0x06dc
218 #define REG_PTR_CCM_DL50 0x06e0
219 #define REG_PTR_CCM_DL65 0x06e4
220 #define REG_PTR_CCM_OUTDOOR 0x06ec
222 #define REG_ARR_CCM(n) (0x2800 + 36 * (n))
224 static const char * const s5k5baf_supply_names[] = {
225 "vdda", /* Analog power supply 2.8V (2.6V to 3.0V) */
226 "vddreg", /* Regulator input power supply 1.8V (1.7V to 1.9V)
227 or 2.8V (2.6V to 3.0) */
228 "vddio", /* I/O power supply 1.8V (1.65V to 1.95V)
229 or 2.8V (2.5V to 3.1V) */
231 #define S5K5BAF_NUM_SUPPLIES ARRAY_SIZE(s5k5baf_supply_names)
233 struct s5k5baf_gpio {
238 enum s5k5baf_gpio_id {
246 #define NUM_CIS_PADS 1
247 #define NUM_ISP_PADS 2
249 struct s5k5baf_pixfmt {
250 enum v4l2_mbus_pixelcode code;
252 /* REG_P_FMT(x) register value */
256 struct s5k5baf_ctrls {
257 struct v4l2_ctrl_handler handler;
258 struct { /* Auto / manual white balance cluster */
259 struct v4l2_ctrl *awb;
260 struct v4l2_ctrl *gain_red;
261 struct v4l2_ctrl *gain_blue;
263 struct { /* Mirror cluster */
264 struct v4l2_ctrl *hflip;
265 struct v4l2_ctrl *vflip;
267 struct { /* Auto exposure / manual exposure and gain cluster */
268 struct v4l2_ctrl *auto_exp;
269 struct v4l2_ctrl *exposure;
270 struct v4l2_ctrl *gain;
290 struct s5k5baf_gpio gpios[NUM_GPIOS];
291 enum v4l2_mbus_type bus_type;
293 struct regulator_bulk_data supplies[S5K5BAF_NUM_SUPPLIES];
298 struct s5k5baf_fw *fw;
300 struct v4l2_subdev cis_sd;
301 struct media_pad cis_pad;
303 struct v4l2_subdev sd;
304 struct media_pad pads[NUM_ISP_PADS];
306 /* protects the struct members below */
311 struct v4l2_rect crop_sink;
312 struct v4l2_rect compose;
313 struct v4l2_rect crop_source;
314 /* index to s5k5baf_formats array */
316 /* actual frame interval in 100us */
318 /* requested frame interval in 100us */
320 /* cache for REG_DBG_AUTOALG_EN register */
323 struct s5k5baf_ctrls ctrls;
325 unsigned int streaming:1;
326 unsigned int apply_cfg:1;
327 unsigned int apply_crop:1;
328 unsigned int valid_auto_alg:1;
332 static const struct s5k5baf_pixfmt s5k5baf_formats[] = {
333 { V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG, 5 },
335 { V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_REC709, 6 },
336 { V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_JPEG, 0 },
339 static struct v4l2_rect s5k5baf_cis_rect = {
340 0, 0, S5K5BAF_CIS_WIDTH, S5K5BAF_CIS_HEIGHT
343 /* Setfile contains set of I2C command sequences. Each sequence has its ID.
346 * u16 count; number of sequences
348 * u16 id; sequence id
349 * u16 offset; sequence offset in data array
351 * u16 data[*]; array containing sequences
354 static int s5k5baf_fw_parse(struct device *dev, struct s5k5baf_fw **fw,
355 size_t count, const u16 *data)
357 struct s5k5baf_fw *f;
361 if (count < S5K5BAG_FW_TAG_LEN + 1) {
362 dev_err(dev, "firmware file too short (%zu)\n", count);
366 ret = memcmp(data, S5K5BAF_FW_TAG, S5K5BAG_FW_TAG_LEN * sizeof(u16));
368 dev_err(dev, "invalid firmware magic number\n");
372 data += S5K5BAG_FW_TAG_LEN;
373 count -= S5K5BAG_FW_TAG_LEN;
375 d = devm_kzalloc(dev, count * sizeof(u16), GFP_KERNEL);
377 for (i = 0; i < count; ++i)
378 d[i] = le16_to_cpu(data[i]);
380 f = (struct s5k5baf_fw *)d;
381 if (count < 1 + 2 * f->count) {
382 dev_err(dev, "invalid firmware header (count=%d size=%zu)\n",
383 f->count, 2 * (count + S5K5BAG_FW_TAG_LEN));
387 d += 1 + 2 * f->count;
389 for (i = 0; i < f->count; ++i) {
390 if (f->seq[i].offset + d <= end)
392 dev_err(dev, "invalid firmware header (seq=%d)\n", i);
401 static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
403 return &container_of(ctrl->handler, struct s5k5baf, ctrls.handler)->sd;
406 static inline bool s5k5baf_is_cis_subdev(struct v4l2_subdev *sd)
408 return sd->entity.type == MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
411 static inline struct s5k5baf *to_s5k5baf(struct v4l2_subdev *sd)
413 if (s5k5baf_is_cis_subdev(sd))
414 return container_of(sd, struct s5k5baf, cis_sd);
416 return container_of(sd, struct s5k5baf, sd);
419 static u16 s5k5baf_i2c_read(struct s5k5baf *state, u16 addr)
421 struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
423 struct i2c_msg msg[] = {
424 { .addr = c->addr, .flags = 0,
425 .len = 2, .buf = (u8 *)&w },
426 { .addr = c->addr, .flags = I2C_M_RD,
427 .len = 2, .buf = (u8 *)&r },
434 w = cpu_to_be16(addr);
435 ret = i2c_transfer(c->adapter, msg, 2);
438 v4l2_dbg(3, debug, c, "i2c_read: 0x%04x : 0x%04x\n", addr, r);
441 v4l2_err(c, "i2c_read: error during transfer (%d)\n", ret);
447 static void s5k5baf_i2c_write(struct s5k5baf *state, u16 addr, u16 val)
449 u8 buf[4] = { addr >> 8, addr & 0xFF, val >> 8, val & 0xFF };
450 struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
456 ret = i2c_master_send(c, buf, 4);
457 v4l2_dbg(3, debug, c, "i2c_write: 0x%04x : 0x%04x\n", addr, val);
460 v4l2_err(c, "i2c_write: error during transfer (%d)\n", ret);
465 static u16 s5k5baf_read(struct s5k5baf *state, u16 addr)
467 s5k5baf_i2c_write(state, REG_CMDRD_ADDR, addr);
468 return s5k5baf_i2c_read(state, REG_CMD_BUF);
471 static void s5k5baf_write(struct s5k5baf *state, u16 addr, u16 val)
473 s5k5baf_i2c_write(state, REG_CMDWR_ADDR, addr);
474 s5k5baf_i2c_write(state, REG_CMD_BUF, val);
477 static void s5k5baf_write_arr_seq(struct s5k5baf *state, u16 addr,
478 u16 count, const u16 *seq)
480 struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
481 __be16 buf[count + 1];
484 s5k5baf_i2c_write(state, REG_CMDWR_ADDR, addr);
488 buf[0] = __constant_cpu_to_be16(REG_CMD_BUF);
489 for (n = 1; n <= count; ++n)
490 buf[n] = cpu_to_be16(*seq++);
493 ret = i2c_master_send(c, (char *)buf, n);
494 v4l2_dbg(3, debug, c, "i2c_write_seq(count=%d): %*ph\n", count,
495 min(2 * count, 64), seq - count);
498 v4l2_err(c, "i2c_write_seq: error during transfer (%d)\n", ret);
503 #define s5k5baf_write_seq(state, addr, seq...) \
504 s5k5baf_write_arr_seq(state, addr, sizeof((char[]){ seq }), \
505 (const u16 []){ seq });
507 /* add items count at the beginning of the list */
508 #define NSEQ(seq...) sizeof((char[]){ seq }), seq
511 * s5k5baf_write_nseq() - Writes sequences of values to sensor memory via i2c
512 * @nseq: sequence of u16 words in format:
513 * (N, address, value[1]...value[N-1])*,0
515 * u16 seq[] = { NSEQ(0x4000, 1, 1), NSEQ(0x4010, 640, 480), 0 };
516 * ret = s5k5baf_write_nseq(c, seq);
518 static void s5k5baf_write_nseq(struct s5k5baf *state, const u16 *nseq)
522 while ((count = *nseq++)) {
526 s5k5baf_write_arr_seq(state, addr, count, nseq);
531 static void s5k5baf_synchronize(struct s5k5baf *state, int timeout, u16 addr)
533 unsigned long end = jiffies + msecs_to_jiffies(timeout);
536 s5k5baf_write(state, addr, 1);
538 reg = s5k5baf_read(state, addr);
539 if (state->error || !reg)
541 usleep_range(5000, 10000);
542 } while (time_is_after_jiffies(end));
544 v4l2_err(&state->sd, "timeout on register synchronize (%#x)\n", addr);
545 state->error = -ETIMEDOUT;
548 static u16 *s5k5baf_fw_get_seq(struct s5k5baf *state, u16 seq_id)
550 struct s5k5baf_fw *fw = state->fw;
557 data = fw->data + 2 * fw->count;
559 for (i = 0; i < fw->count; ++i) {
560 if (fw->seq[i].id == seq_id)
561 return data + fw->seq[i].offset;
567 static void s5k5baf_hw_patch(struct s5k5baf *state)
569 u16 *seq = s5k5baf_fw_get_seq(state, S5K5BAF_FW_ID_PATCH);
572 s5k5baf_write_nseq(state, seq);
575 static void s5k5baf_hw_set_clocks(struct s5k5baf *state)
577 unsigned long mclk = state->mclk_frequency / 1000;
579 static const u16 nseq_clk_cfg[] = {
580 NSEQ(REG_I_USE_NPVI_CLOCKS,
581 NPVI_CLOCKS, NMIPI_CLOCKS, 0,
582 SCLK_PVI_FREQ / 4, PCLK_MIN_FREQ / 4, PCLK_MAX_FREQ / 4,
583 SCLK_MIPI_FREQ / 4, PCLK_MIN_FREQ / 4, PCLK_MAX_FREQ / 4),
584 NSEQ(REG_I_USE_REGS_API, 1),
588 s5k5baf_write_seq(state, REG_I_INCLK_FREQ_L, mclk & 0xffff, mclk >> 16);
589 s5k5baf_write_nseq(state, nseq_clk_cfg);
591 s5k5baf_synchronize(state, 250, REG_I_INIT_PARAMS_UPDATED);
592 status = s5k5baf_read(state, REG_I_ERROR_INFO);
593 if (!state->error && status) {
594 v4l2_err(&state->sd, "error configuring PLL (%d)\n", status);
595 state->error = -EINVAL;
599 /* set custom color correction matrices for various illuminations */
600 static void s5k5baf_hw_set_ccm(struct s5k5baf *state)
602 u16 *seq = s5k5baf_fw_get_seq(state, S5K5BAF_FW_ID_CCM);
605 s5k5baf_write_nseq(state, seq);
608 /* CIS sensor tuning, based on undocumented android driver code */
609 static void s5k5baf_hw_set_cis(struct s5k5baf *state)
611 u16 *seq = s5k5baf_fw_get_seq(state, S5K5BAF_FW_ID_CIS);
616 s5k5baf_i2c_write(state, REG_CMDWR_PAGE, PAGE_IF_HW);
617 s5k5baf_write_nseq(state, seq);
618 s5k5baf_i2c_write(state, REG_CMDWR_PAGE, PAGE_IF_SW);
621 static void s5k5baf_hw_sync_cfg(struct s5k5baf *state)
623 s5k5baf_write(state, REG_G_PREV_CFG_CHG, 1);
624 if (state->apply_crop) {
625 s5k5baf_write(state, REG_G_INPUTS_CHANGE_REQ, 1);
626 s5k5baf_write(state, REG_G_PREV_CFG_BYPASS_CHANGED, 1);
628 s5k5baf_synchronize(state, 500, REG_G_NEW_CFG_SYNC);
630 /* Set horizontal and vertical image flipping */
631 static void s5k5baf_hw_set_mirror(struct s5k5baf *state)
633 u16 flip = state->ctrls.vflip->val | (state->ctrls.vflip->val << 1);
635 s5k5baf_write(state, REG_P_PREV_MIRROR(0), flip);
636 if (state->streaming)
637 s5k5baf_hw_sync_cfg(state);
640 static void s5k5baf_hw_set_alg(struct s5k5baf *state, u16 alg, bool enable)
642 u16 cur_alg, new_alg;
644 if (!state->valid_auto_alg)
645 cur_alg = s5k5baf_read(state, REG_DBG_AUTOALG_EN);
647 cur_alg = state->auto_alg;
649 new_alg = enable ? (cur_alg | alg) : (cur_alg & ~alg);
651 if (new_alg != cur_alg)
652 s5k5baf_write(state, REG_DBG_AUTOALG_EN, new_alg);
657 state->valid_auto_alg = 1;
658 state->auto_alg = new_alg;
661 /* Configure auto/manual white balance and R/G/B gains */
662 static void s5k5baf_hw_set_awb(struct s5k5baf *state, int awb)
664 struct s5k5baf_ctrls *ctrls = &state->ctrls;
667 s5k5baf_write_seq(state, REG_SF_RGAIN,
668 ctrls->gain_red->val, 1,
669 S5K5BAF_GAIN_GREEN_DEF, 1,
670 ctrls->gain_blue->val, 1,
673 s5k5baf_hw_set_alg(state, AALG_WB_EN, awb);
676 /* Program FW with exposure time, 'exposure' in us units */
677 static void s5k5baf_hw_set_user_exposure(struct s5k5baf *state, int exposure)
679 unsigned int time = exposure / 10;
681 s5k5baf_write_seq(state, REG_SF_USR_EXPOSURE_L,
682 time & 0xffff, time >> 16, 1);
685 static void s5k5baf_hw_set_user_gain(struct s5k5baf *state, int gain)
687 s5k5baf_write_seq(state, REG_SF_USR_TOT_GAIN, gain, 1);
690 /* Set auto/manual exposure and total gain */
691 static void s5k5baf_hw_set_auto_exposure(struct s5k5baf *state, int value)
693 if (value == V4L2_EXPOSURE_AUTO) {
694 s5k5baf_hw_set_alg(state, AALG_AE_EN | AALG_DIVLEI_EN, true);
696 unsigned int exp_time = state->ctrls.exposure->val;
698 s5k5baf_hw_set_user_exposure(state, exp_time);
699 s5k5baf_hw_set_user_gain(state, state->ctrls.gain->val);
700 s5k5baf_hw_set_alg(state, AALG_AE_EN | AALG_DIVLEI_EN, false);
704 static void s5k5baf_hw_set_anti_flicker(struct s5k5baf *state, int v)
706 if (v == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) {
707 s5k5baf_hw_set_alg(state, AALG_FLICKER_EN, true);
709 /* The V4L2_CID_LINE_FREQUENCY control values match
710 * the register values */
711 s5k5baf_write_seq(state, REG_SF_FLICKER_QUANT, v, 1);
712 s5k5baf_hw_set_alg(state, AALG_FLICKER_EN, false);
716 static void s5k5baf_hw_set_colorfx(struct s5k5baf *state, int val)
718 static const u16 colorfx[] = {
719 [V4L2_COLORFX_NONE] = 0,
720 [V4L2_COLORFX_BW] = 1,
721 [V4L2_COLORFX_NEGATIVE] = 2,
722 [V4L2_COLORFX_SEPIA] = 3,
723 [V4L2_COLORFX_SKY_BLUE] = 4,
724 [V4L2_COLORFX_SKETCH] = 5,
727 s5k5baf_write(state, REG_G_SPEC_EFFECTS, colorfx[val]);
730 static int s5k5baf_find_pixfmt(struct v4l2_mbus_framefmt *mf)
734 for (i = 0; i < ARRAY_SIZE(s5k5baf_formats); i++) {
735 if (mf->colorspace != s5k5baf_formats[i].colorspace)
737 if (mf->code == s5k5baf_formats[i].code)
742 return (c < 0) ? 0 : c;
745 static int s5k5baf_clear_error(struct s5k5baf *state)
747 int ret = state->error;
753 static int s5k5baf_hw_set_video_bus(struct s5k5baf *state)
757 if (state->bus_type == V4L2_MBUS_CSI2)
758 en_pkts = EN_PACKETS_CSI2;
762 s5k5baf_write_seq(state, REG_OIF_EN_MIPI_LANES,
763 state->nlanes, en_pkts, 1);
765 return s5k5baf_clear_error(state);
768 static u16 s5k5baf_get_cfg_error(struct s5k5baf *state)
770 u16 err = s5k5baf_read(state, REG_G_PREV_CFG_ERROR);
772 s5k5baf_write(state, REG_G_PREV_CFG_ERROR, 0);
776 static void s5k5baf_hw_set_fiv(struct s5k5baf *state, u16 fiv)
778 s5k5baf_write(state, REG_P_MAX_FR_TIME(0), fiv);
779 s5k5baf_hw_sync_cfg(state);
782 static void s5k5baf_hw_find_min_fiv(struct s5k5baf *state)
787 fiv = s5k5baf_read(state, REG_G_ACTUAL_P_FR_TIME);
791 for (n = 5; n > 0; --n) {
792 s5k5baf_hw_set_fiv(state, fiv);
793 err = s5k5baf_get_cfg_error(state);
797 case CFG_ERROR_RANGE:
802 v4l2_info(&state->sd,
803 "found valid frame interval: %d00us\n", fiv);
807 "error setting frame interval: %d\n", err);
808 state->error = -EINVAL;
811 v4l2_err(&state->sd, "cannot find correct frame interval\n");
812 state->error = -ERANGE;
815 static void s5k5baf_hw_validate_cfg(struct s5k5baf *state)
819 err = s5k5baf_get_cfg_error(state);
825 state->apply_cfg = 1;
827 case CFG_ERROR_RANGE:
828 s5k5baf_hw_find_min_fiv(state);
830 state->apply_cfg = 1;
834 "error setting format: %d\n", err);
835 state->error = -EINVAL;
839 static void s5k5baf_rescale(struct v4l2_rect *r, const struct v4l2_rect *v,
840 const struct v4l2_rect *n,
841 const struct v4l2_rect *d)
843 r->left = v->left * n->width / d->width;
844 r->top = v->top * n->height / d->height;
845 r->width = v->width * n->width / d->width;
846 r->height = v->height * n->height / d->height;
849 static int s5k5baf_hw_set_crop_rects(struct s5k5baf *state)
851 struct v4l2_rect *p, r;
855 p = &state->crop_sink;
856 s5k5baf_write_seq(state, REG_G_PREVREQ_IN_WIDTH, p->width, p->height,
859 s5k5baf_rescale(&r, &state->crop_source, &state->crop_sink,
861 s5k5baf_write_seq(state, REG_G_PREVZOOM_IN_WIDTH, r.width, r.height,
864 s5k5baf_synchronize(state, 500, REG_G_INPUTS_CHANGE_REQ);
865 s5k5baf_synchronize(state, 500, REG_G_PREV_CFG_BYPASS_CHANGED);
866 err = s5k5baf_get_cfg_error(state);
867 ret = s5k5baf_clear_error(state);
874 case CFG_ERROR_RANGE:
875 /* retry crop with frame interval set to max */
876 s5k5baf_hw_set_fiv(state, S5K5BAF_MAX_FR_TIME);
877 err = s5k5baf_get_cfg_error(state);
878 ret = s5k5baf_clear_error(state);
883 "crop error on max frame interval: %d\n", err);
884 state->error = -EINVAL;
886 s5k5baf_hw_set_fiv(state, state->req_fiv);
887 s5k5baf_hw_validate_cfg(state);
890 v4l2_err(&state->sd, "crop error: %d\n", err);
894 if (!state->apply_cfg)
897 p = &state->crop_source;
898 s5k5baf_write_seq(state, REG_P_OUT_WIDTH(0), p->width, p->height);
899 s5k5baf_hw_set_fiv(state, state->req_fiv);
900 s5k5baf_hw_validate_cfg(state);
902 return s5k5baf_clear_error(state);
905 static void s5k5baf_hw_set_config(struct s5k5baf *state)
907 u16 reg_fmt = s5k5baf_formats[state->pixfmt].reg_p_fmt;
908 struct v4l2_rect *r = &state->crop_source;
910 s5k5baf_write_seq(state, REG_P_OUT_WIDTH(0),
911 r->width, r->height, reg_fmt,
912 PCLK_MAX_FREQ >> 2, PCLK_MIN_FREQ >> 2,
913 PVI_MASK_MIPI, CLK_MIPI_INDEX,
914 FR_RATE_FIXED, FR_RATE_Q_DYNAMIC,
915 state->req_fiv, S5K5BAF_MIN_FR_TIME);
916 s5k5baf_hw_sync_cfg(state);
917 s5k5baf_hw_validate_cfg(state);
921 static void s5k5baf_hw_set_test_pattern(struct s5k5baf *state, int id)
923 s5k5baf_i2c_write(state, REG_PATTERN_WIDTH, 800);
924 s5k5baf_i2c_write(state, REG_PATTERN_HEIGHT, 511);
925 s5k5baf_i2c_write(state, REG_PATTERN_PARAM, 0);
926 s5k5baf_i2c_write(state, REG_PATTERN_SET, id);
929 static void s5k5baf_gpio_assert(struct s5k5baf *state, int id)
931 struct s5k5baf_gpio *gpio = &state->gpios[id];
933 gpio_set_value(gpio->gpio, gpio->level);
936 static void s5k5baf_gpio_deassert(struct s5k5baf *state, int id)
938 struct s5k5baf_gpio *gpio = &state->gpios[id];
940 gpio_set_value(gpio->gpio, !gpio->level);
943 static int s5k5baf_power_on(struct s5k5baf *state)
947 ret = regulator_bulk_enable(S5K5BAF_NUM_SUPPLIES, state->supplies);
951 ret = clk_set_rate(state->clock, state->mclk_frequency);
955 ret = clk_prepare_enable(state->clock);
959 v4l2_dbg(1, debug, &state->sd, "clock frequency: %ld\n",
960 clk_get_rate(state->clock));
962 s5k5baf_gpio_deassert(state, STBY);
963 usleep_range(50, 100);
964 s5k5baf_gpio_deassert(state, RST);
968 regulator_bulk_disable(S5K5BAF_NUM_SUPPLIES, state->supplies);
970 v4l2_err(&state->sd, "%s() failed (%d)\n", __func__, ret);
974 static int s5k5baf_power_off(struct s5k5baf *state)
978 state->streaming = 0;
979 state->apply_cfg = 0;
980 state->apply_crop = 0;
982 s5k5baf_gpio_assert(state, RST);
983 s5k5baf_gpio_assert(state, STBY);
985 if (!IS_ERR(state->clock))
986 clk_disable_unprepare(state->clock);
988 ret = regulator_bulk_disable(S5K5BAF_NUM_SUPPLIES,
991 v4l2_err(&state->sd, "failed to disable regulators\n");
996 static void s5k5baf_hw_init(struct s5k5baf *state)
998 s5k5baf_i2c_write(state, AHB_MSB_ADDR_PTR, PAGE_IF_HW);
999 s5k5baf_i2c_write(state, REG_CLEAR_HOST_INT, 0);
1000 s5k5baf_i2c_write(state, REG_SW_LOAD_COMPLETE, 1);
1001 s5k5baf_i2c_write(state, REG_CMDRD_PAGE, PAGE_IF_SW);
1002 s5k5baf_i2c_write(state, REG_CMDWR_PAGE, PAGE_IF_SW);
1006 * V4L2 subdev core and video operations
1009 static void s5k5baf_initialize_data(struct s5k5baf *state)
1012 state->req_fiv = 10000 / 15;
1013 state->fiv = state->req_fiv;
1014 state->valid_auto_alg = 0;
1017 static int s5k5baf_load_setfile(struct s5k5baf *state)
1019 struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
1020 const struct firmware *fw;
1023 ret = request_firmware(&fw, S5K5BAF_FW_FILENAME, &c->dev);
1025 dev_warn(&c->dev, "firmware file (%s) not loaded\n",
1026 S5K5BAF_FW_FILENAME);
1030 ret = s5k5baf_fw_parse(&c->dev, &state->fw, fw->size / 2,
1033 release_firmware(fw);
1038 static int s5k5baf_set_power(struct v4l2_subdev *sd, int on)
1040 struct s5k5baf *state = to_s5k5baf(sd);
1043 mutex_lock(&state->lock);
1045 if (!on != state->power)
1049 if (state->fw == NULL)
1050 s5k5baf_load_setfile(state);
1052 s5k5baf_initialize_data(state);
1053 ret = s5k5baf_power_on(state);
1057 s5k5baf_hw_init(state);
1058 s5k5baf_hw_patch(state);
1059 s5k5baf_i2c_write(state, REG_SET_HOST_INT, 1);
1060 s5k5baf_hw_set_clocks(state);
1062 ret = s5k5baf_hw_set_video_bus(state);
1066 s5k5baf_hw_set_cis(state);
1067 s5k5baf_hw_set_ccm(state);
1069 ret = s5k5baf_clear_error(state);
1073 s5k5baf_power_off(state);
1078 mutex_unlock(&state->lock);
1081 ret = v4l2_ctrl_handler_setup(&state->ctrls.handler);
1086 static void s5k5baf_hw_set_stream(struct s5k5baf *state, int enable)
1088 s5k5baf_write_seq(state, REG_G_ENABLE_PREV, enable, 1);
1091 static int s5k5baf_s_stream(struct v4l2_subdev *sd, int on)
1093 struct s5k5baf *state = to_s5k5baf(sd);
1096 mutex_lock(&state->lock);
1098 if (state->streaming == !!on) {
1104 s5k5baf_hw_set_config(state);
1105 ret = s5k5baf_hw_set_crop_rects(state);
1108 s5k5baf_hw_set_stream(state, 1);
1109 s5k5baf_i2c_write(state, 0xb0cc, 0x000b);
1111 s5k5baf_hw_set_stream(state, 0);
1113 ret = s5k5baf_clear_error(state);
1115 state->streaming = !state->streaming;
1118 mutex_unlock(&state->lock);
1123 static int s5k5baf_g_frame_interval(struct v4l2_subdev *sd,
1124 struct v4l2_subdev_frame_interval *fi)
1126 struct s5k5baf *state = to_s5k5baf(sd);
1128 mutex_lock(&state->lock);
1129 fi->interval.numerator = state->fiv;
1130 fi->interval.denominator = 10000;
1131 mutex_unlock(&state->lock);
1136 static void s5k5baf_set_frame_interval(struct s5k5baf *state,
1137 struct v4l2_subdev_frame_interval *fi)
1139 struct v4l2_fract *i = &fi->interval;
1141 if (fi->interval.denominator == 0)
1142 state->req_fiv = S5K5BAF_MAX_FR_TIME;
1144 state->req_fiv = clamp_t(u32,
1145 i->numerator * 10000 / i->denominator,
1146 S5K5BAF_MIN_FR_TIME,
1147 S5K5BAF_MAX_FR_TIME);
1149 state->fiv = state->req_fiv;
1150 if (state->apply_cfg) {
1151 s5k5baf_hw_set_fiv(state, state->req_fiv);
1152 s5k5baf_hw_validate_cfg(state);
1154 *i = (struct v4l2_fract){ state->fiv, 10000 };
1155 if (state->fiv == state->req_fiv)
1156 v4l2_info(&state->sd, "frame interval changed to %d00us\n",
1160 static int s5k5baf_s_frame_interval(struct v4l2_subdev *sd,
1161 struct v4l2_subdev_frame_interval *fi)
1163 struct s5k5baf *state = to_s5k5baf(sd);
1165 mutex_lock(&state->lock);
1166 s5k5baf_set_frame_interval(state, fi);
1167 mutex_unlock(&state->lock);
1172 * V4L2 subdev pad level and video operations
1174 static int s5k5baf_enum_frame_interval(struct v4l2_subdev *sd,
1175 struct v4l2_subdev_fh *fh,
1176 struct v4l2_subdev_frame_interval_enum *fie)
1178 if (fie->index > S5K5BAF_MAX_FR_TIME - S5K5BAF_MIN_FR_TIME ||
1179 fie->pad != PAD_CIS)
1182 v4l_bound_align_image(&fie->width, S5K5BAF_WIN_WIDTH_MIN,
1183 S5K5BAF_CIS_WIDTH, 1,
1184 &fie->height, S5K5BAF_WIN_HEIGHT_MIN,
1185 S5K5BAF_CIS_HEIGHT, 1, 0);
1187 fie->interval.numerator = S5K5BAF_MIN_FR_TIME + fie->index;
1188 fie->interval.denominator = 10000;
1193 static int s5k5baf_enum_mbus_code(struct v4l2_subdev *sd,
1194 struct v4l2_subdev_fh *fh,
1195 struct v4l2_subdev_mbus_code_enum *code)
1197 if (code->pad == PAD_CIS) {
1198 if (code->index > 0)
1200 code->code = V4L2_MBUS_FMT_FIXED;
1204 if (code->index >= ARRAY_SIZE(s5k5baf_formats))
1207 code->code = s5k5baf_formats[code->index].code;
1211 static int s5k5baf_enum_frame_size(struct v4l2_subdev *sd,
1212 struct v4l2_subdev_fh *fh,
1213 struct v4l2_subdev_frame_size_enum *fse)
1220 if (fse->pad == PAD_CIS) {
1221 fse->code = V4L2_MBUS_FMT_FIXED;
1222 fse->min_width = S5K5BAF_CIS_WIDTH;
1223 fse->max_width = S5K5BAF_CIS_WIDTH;
1224 fse->min_height = S5K5BAF_CIS_HEIGHT;
1225 fse->max_height = S5K5BAF_CIS_HEIGHT;
1229 i = ARRAY_SIZE(s5k5baf_formats);
1231 if (fse->code == s5k5baf_formats[i].code)
1233 fse->code = s5k5baf_formats[i].code;
1234 fse->min_width = S5K5BAF_WIN_WIDTH_MIN;
1235 fse->max_width = S5K5BAF_CIS_WIDTH;
1236 fse->max_height = S5K5BAF_WIN_HEIGHT_MIN;
1237 fse->min_height = S5K5BAF_CIS_HEIGHT;
1242 static void s5k5baf_try_cis_format(struct v4l2_mbus_framefmt *mf)
1244 mf->width = S5K5BAF_CIS_WIDTH;
1245 mf->height = S5K5BAF_CIS_HEIGHT;
1246 mf->code = V4L2_MBUS_FMT_FIXED;
1247 mf->colorspace = V4L2_COLORSPACE_JPEG;
1248 mf->field = V4L2_FIELD_NONE;
1251 static int s5k5baf_try_isp_format(struct v4l2_mbus_framefmt *mf)
1255 v4l_bound_align_image(&mf->width, S5K5BAF_WIN_WIDTH_MIN,
1256 S5K5BAF_CIS_WIDTH, 1,
1257 &mf->height, S5K5BAF_WIN_HEIGHT_MIN,
1258 S5K5BAF_CIS_HEIGHT, 1, 0);
1260 pixfmt = s5k5baf_find_pixfmt(mf);
1262 mf->colorspace = s5k5baf_formats[pixfmt].colorspace;
1263 mf->code = s5k5baf_formats[pixfmt].code;
1264 mf->field = V4L2_FIELD_NONE;
1269 static int s5k5baf_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1270 struct v4l2_subdev_format *fmt)
1272 struct s5k5baf *state = to_s5k5baf(sd);
1273 const struct s5k5baf_pixfmt *pixfmt;
1274 struct v4l2_mbus_framefmt *mf;
1276 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1277 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1283 if (fmt->pad == PAD_CIS) {
1284 s5k5baf_try_cis_format(mf);
1287 mf->field = V4L2_FIELD_NONE;
1288 mutex_lock(&state->lock);
1289 pixfmt = &s5k5baf_formats[state->pixfmt];
1290 mf->width = state->crop_source.width;
1291 mf->height = state->crop_source.height;
1292 mf->code = pixfmt->code;
1293 mf->colorspace = pixfmt->colorspace;
1294 mutex_unlock(&state->lock);
1299 static int s5k5baf_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1300 struct v4l2_subdev_format *fmt)
1302 struct v4l2_mbus_framefmt *mf = &fmt->format;
1303 struct s5k5baf *state = to_s5k5baf(sd);
1304 const struct s5k5baf_pixfmt *pixfmt;
1307 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1308 *v4l2_subdev_get_try_format(fh, fmt->pad) = *mf;
1312 if (fmt->pad == PAD_CIS) {
1313 s5k5baf_try_cis_format(mf);
1317 mutex_lock(&state->lock);
1319 if (state->streaming) {
1320 mutex_unlock(&state->lock);
1324 state->pixfmt = s5k5baf_try_isp_format(mf);
1325 pixfmt = &s5k5baf_formats[state->pixfmt];
1326 mf->code = pixfmt->code;
1327 mf->colorspace = pixfmt->colorspace;
1328 mf->width = state->crop_source.width;
1329 mf->height = state->crop_source.height;
1331 mutex_unlock(&state->lock);
1335 enum selection_rect { R_CIS, R_CROP_SINK, R_COMPOSE, R_CROP_SOURCE, R_INVALID };
1337 static enum selection_rect s5k5baf_get_sel_rect(u32 pad, u32 target)
1340 case V4L2_SEL_TGT_CROP_BOUNDS:
1341 return pad ? R_COMPOSE : R_CIS;
1342 case V4L2_SEL_TGT_CROP:
1343 return pad ? R_CROP_SOURCE : R_CROP_SINK;
1344 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1345 return pad ? R_INVALID : R_CROP_SINK;
1346 case V4L2_SEL_TGT_COMPOSE:
1347 return pad ? R_INVALID : R_COMPOSE;
1353 static int s5k5baf_is_bound_target(u32 target)
1355 return target == V4L2_SEL_TGT_CROP_BOUNDS ||
1356 target == V4L2_SEL_TGT_COMPOSE_BOUNDS;
1359 static int s5k5baf_get_selection(struct v4l2_subdev *sd,
1360 struct v4l2_subdev_fh *fh,
1361 struct v4l2_subdev_selection *sel)
1363 static enum selection_rect rtype;
1364 struct s5k5baf *state = to_s5k5baf(sd);
1366 rtype = s5k5baf_get_sel_rect(sel->pad, sel->target);
1372 sel->r = s5k5baf_cis_rect;
1378 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1379 if (rtype == R_COMPOSE)
1380 sel->r = *v4l2_subdev_get_try_compose(fh, sel->pad);
1382 sel->r = *v4l2_subdev_get_try_crop(fh, sel->pad);
1386 mutex_lock(&state->lock);
1389 sel->r = state->crop_sink;
1392 sel->r = state->compose;
1395 sel->r = state->crop_source;
1400 if (s5k5baf_is_bound_target(sel->target)) {
1404 mutex_unlock(&state->lock);
1409 /* bounds range [start, start+len) to [0, max) and aligns to 2 */
1410 static void s5k5baf_bound_range(u32 *start, u32 *len, u32 max)
1414 if (*start + *len > max)
1415 *start = max - *len;
1418 if (*len < S5K5BAF_WIN_WIDTH_MIN)
1419 *len = S5K5BAF_WIN_WIDTH_MIN;
1422 static void s5k5baf_bound_rect(struct v4l2_rect *r, u32 width, u32 height)
1424 s5k5baf_bound_range(&r->left, &r->width, width);
1425 s5k5baf_bound_range(&r->top, &r->height, height);
1428 static void s5k5baf_set_rect_and_adjust(struct v4l2_rect **rects,
1429 enum selection_rect first,
1430 struct v4l2_rect *v)
1432 struct v4l2_rect *r, *br;
1433 enum selection_rect i = first;
1439 s5k5baf_bound_rect(r, br->width, br->height);
1440 } while (++i != R_INVALID);
1444 static bool s5k5baf_cmp_rect(const struct v4l2_rect *r1,
1445 const struct v4l2_rect *r2)
1447 return !memcmp(r1, r2, sizeof(*r1));
1450 static int s5k5baf_set_selection(struct v4l2_subdev *sd,
1451 struct v4l2_subdev_fh *fh,
1452 struct v4l2_subdev_selection *sel)
1454 static enum selection_rect rtype;
1455 struct s5k5baf *state = to_s5k5baf(sd);
1456 struct v4l2_rect **rects;
1459 rtype = s5k5baf_get_sel_rect(sel->pad, sel->target);
1460 if (rtype == R_INVALID || s5k5baf_is_bound_target(sel->target))
1463 /* allow only scaling on compose */
1464 if (rtype == R_COMPOSE) {
1469 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1470 rects = (struct v4l2_rect * []) {
1472 v4l2_subdev_get_try_crop(fh, PAD_CIS),
1473 v4l2_subdev_get_try_compose(fh, PAD_CIS),
1474 v4l2_subdev_get_try_crop(fh, PAD_OUT)
1476 s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
1480 rects = (struct v4l2_rect * []) {
1486 mutex_lock(&state->lock);
1487 if (state->streaming) {
1488 /* adjust sel->r to avoid output resolution change */
1489 if (rtype < R_CROP_SOURCE) {
1490 if (sel->r.width < state->crop_source.width)
1491 sel->r.width = state->crop_source.width;
1492 if (sel->r.height < state->crop_source.height)
1493 sel->r.height = state->crop_source.height;
1495 sel->r.width = state->crop_source.width;
1496 sel->r.height = state->crop_source.height;
1499 s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
1500 if (!s5k5baf_cmp_rect(&state->crop_sink, &s5k5baf_cis_rect) ||
1501 !s5k5baf_cmp_rect(&state->compose, &s5k5baf_cis_rect))
1502 state->apply_crop = 1;
1503 if (state->streaming)
1504 ret = s5k5baf_hw_set_crop_rects(state);
1505 mutex_unlock(&state->lock);
1510 static const struct v4l2_subdev_pad_ops s5k5baf_cis_pad_ops = {
1511 .enum_mbus_code = s5k5baf_enum_mbus_code,
1512 .enum_frame_size = s5k5baf_enum_frame_size,
1513 .get_fmt = s5k5baf_get_fmt,
1514 .set_fmt = s5k5baf_set_fmt,
1517 static const struct v4l2_subdev_pad_ops s5k5baf_pad_ops = {
1518 .enum_mbus_code = s5k5baf_enum_mbus_code,
1519 .enum_frame_size = s5k5baf_enum_frame_size,
1520 .enum_frame_interval = s5k5baf_enum_frame_interval,
1521 .get_fmt = s5k5baf_get_fmt,
1522 .set_fmt = s5k5baf_set_fmt,
1523 .get_selection = s5k5baf_get_selection,
1524 .set_selection = s5k5baf_set_selection,
1527 static const struct v4l2_subdev_video_ops s5k5baf_video_ops = {
1528 .g_frame_interval = s5k5baf_g_frame_interval,
1529 .s_frame_interval = s5k5baf_s_frame_interval,
1530 .s_stream = s5k5baf_s_stream,
1534 * V4L2 subdev controls
1537 static int s5k5baf_s_ctrl(struct v4l2_ctrl *ctrl)
1539 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
1540 struct s5k5baf *state = to_s5k5baf(sd);
1543 v4l2_dbg(1, debug, sd, "ctrl: %s, value: %d\n", ctrl->name, ctrl->val);
1545 mutex_lock(&state->lock);
1547 if (state->power == 0)
1551 case V4L2_CID_AUTO_WHITE_BALANCE:
1552 s5k5baf_hw_set_awb(state, ctrl->val);
1555 case V4L2_CID_BRIGHTNESS:
1556 s5k5baf_write(state, REG_USER_BRIGHTNESS, ctrl->val);
1559 case V4L2_CID_COLORFX:
1560 s5k5baf_hw_set_colorfx(state, ctrl->val);
1563 case V4L2_CID_CONTRAST:
1564 s5k5baf_write(state, REG_USER_CONTRAST, ctrl->val);
1567 case V4L2_CID_EXPOSURE_AUTO:
1568 s5k5baf_hw_set_auto_exposure(state, ctrl->val);
1571 case V4L2_CID_HFLIP:
1572 s5k5baf_hw_set_mirror(state);
1575 case V4L2_CID_POWER_LINE_FREQUENCY:
1576 s5k5baf_hw_set_anti_flicker(state, ctrl->val);
1579 case V4L2_CID_SATURATION:
1580 s5k5baf_write(state, REG_USER_SATURATION, ctrl->val);
1583 case V4L2_CID_SHARPNESS:
1584 s5k5baf_write(state, REG_USER_SHARPBLUR, ctrl->val);
1587 case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
1588 s5k5baf_write(state, REG_P_COLORTEMP(0), ctrl->val);
1589 if (state->apply_cfg)
1590 s5k5baf_hw_sync_cfg(state);
1593 case V4L2_CID_TEST_PATTERN:
1594 s5k5baf_hw_set_test_pattern(state, ctrl->val);
1598 ret = s5k5baf_clear_error(state);
1599 mutex_unlock(&state->lock);
1603 static const struct v4l2_ctrl_ops s5k5baf_ctrl_ops = {
1604 .s_ctrl = s5k5baf_s_ctrl,
1607 static const char * const s5k5baf_test_pattern_menu[] = {
1617 static int s5k5baf_initialize_ctrls(struct s5k5baf *state)
1619 const struct v4l2_ctrl_ops *ops = &s5k5baf_ctrl_ops;
1620 struct s5k5baf_ctrls *ctrls = &state->ctrls;
1621 struct v4l2_ctrl_handler *hdl = &ctrls->handler;
1624 ret = v4l2_ctrl_handler_init(hdl, 16);
1626 v4l2_err(&state->sd, "cannot init ctrl handler (%d)\n", ret);
1630 /* Auto white balance cluster */
1631 ctrls->awb = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_WHITE_BALANCE,
1633 ctrls->gain_red = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
1634 0, 255, 1, S5K5BAF_GAIN_RED_DEF);
1635 ctrls->gain_blue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
1636 0, 255, 1, S5K5BAF_GAIN_BLUE_DEF);
1637 v4l2_ctrl_auto_cluster(3, &ctrls->awb, 0, false);
1639 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
1640 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
1641 v4l2_ctrl_cluster(2, &ctrls->hflip);
1643 ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
1644 V4L2_CID_EXPOSURE_AUTO,
1645 V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO);
1646 /* Exposure time: x 1 us */
1647 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
1648 0, 6000000U, 1, 100000U);
1649 /* Total gain: 256 <=> 1x */
1650 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
1652 v4l2_ctrl_auto_cluster(3, &ctrls->auto_exp, 0, false);
1654 v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_POWER_LINE_FREQUENCY,
1655 V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
1656 V4L2_CID_POWER_LINE_FREQUENCY_AUTO);
1658 v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_COLORFX,
1659 V4L2_COLORFX_SKY_BLUE, ~0x6f, V4L2_COLORFX_NONE);
1661 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_WHITE_BALANCE_TEMPERATURE,
1664 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, -127, 127, 1, 0);
1665 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -127, 127, 1, 0);
1666 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -127, 127, 1, 0);
1667 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, -127, 127, 1, 0);
1669 v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
1670 ARRAY_SIZE(s5k5baf_test_pattern_menu) - 1,
1671 0, 0, s5k5baf_test_pattern_menu);
1674 v4l2_err(&state->sd, "error creating controls (%d)\n",
1677 v4l2_ctrl_handler_free(hdl);
1681 state->sd.ctrl_handler = hdl;
1686 * V4L2 subdev internal operations
1688 static int s5k5baf_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1690 struct v4l2_mbus_framefmt *mf;
1692 mf = v4l2_subdev_get_try_format(fh, PAD_CIS);
1693 s5k5baf_try_cis_format(mf);
1695 if (s5k5baf_is_cis_subdev(sd))
1698 mf = v4l2_subdev_get_try_format(fh, PAD_OUT);
1699 mf->colorspace = s5k5baf_formats[0].colorspace;
1700 mf->code = s5k5baf_formats[0].code;
1701 mf->width = s5k5baf_cis_rect.width;
1702 mf->height = s5k5baf_cis_rect.height;
1703 mf->field = V4L2_FIELD_NONE;
1705 *v4l2_subdev_get_try_crop(fh, PAD_CIS) = s5k5baf_cis_rect;
1706 *v4l2_subdev_get_try_compose(fh, PAD_CIS) = s5k5baf_cis_rect;
1707 *v4l2_subdev_get_try_crop(fh, PAD_OUT) = s5k5baf_cis_rect;
1712 static int s5k5baf_check_fw_revision(struct s5k5baf *state)
1714 u16 api_ver = 0, fw_rev = 0, s_id = 0;
1717 api_ver = s5k5baf_read(state, REG_FW_APIVER);
1718 fw_rev = s5k5baf_read(state, REG_FW_REVISION) & 0xff;
1719 s_id = s5k5baf_read(state, REG_FW_SENSOR_ID);
1720 ret = s5k5baf_clear_error(state);
1724 v4l2_info(&state->sd, "FW API=%#x, revision=%#x sensor_id=%#x\n",
1725 api_ver, fw_rev, s_id);
1727 if (api_ver != S5K5BAF_FW_APIVER) {
1728 v4l2_err(&state->sd, "FW API version not supported\n");
1735 static int s5k5baf_registered(struct v4l2_subdev *sd)
1737 struct s5k5baf *state = to_s5k5baf(sd);
1740 ret = v4l2_device_register_subdev(sd->v4l2_dev, &state->cis_sd);
1742 v4l2_err(sd, "failed to register subdev %s\n",
1743 state->cis_sd.name);
1745 ret = media_entity_create_link(&state->cis_sd.entity, PAD_CIS,
1746 &state->sd.entity, PAD_CIS,
1747 MEDIA_LNK_FL_IMMUTABLE |
1748 MEDIA_LNK_FL_ENABLED);
1752 static void s5k5baf_unregistered(struct v4l2_subdev *sd)
1754 struct s5k5baf *state = to_s5k5baf(sd);
1755 v4l2_device_unregister_subdev(&state->cis_sd);
1758 static const struct v4l2_subdev_ops s5k5baf_cis_subdev_ops = {
1759 .pad = &s5k5baf_cis_pad_ops,
1762 static const struct v4l2_subdev_internal_ops s5k5baf_cis_subdev_internal_ops = {
1763 .open = s5k5baf_open,
1766 static const struct v4l2_subdev_internal_ops s5k5baf_subdev_internal_ops = {
1767 .registered = s5k5baf_registered,
1768 .unregistered = s5k5baf_unregistered,
1769 .open = s5k5baf_open,
1772 static const struct v4l2_subdev_core_ops s5k5baf_core_ops = {
1773 .s_power = s5k5baf_set_power,
1774 .log_status = v4l2_ctrl_subdev_log_status,
1777 static const struct v4l2_subdev_ops s5k5baf_subdev_ops = {
1778 .core = &s5k5baf_core_ops,
1779 .pad = &s5k5baf_pad_ops,
1780 .video = &s5k5baf_video_ops,
1783 static int s5k5baf_configure_gpios(struct s5k5baf *state)
1785 static const char const *name[] = { "S5K5BAF_STBY", "S5K5BAF_RST" };
1786 struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
1787 struct s5k5baf_gpio *g = state->gpios;
1790 for (i = 0; i < NUM_GPIOS; ++i) {
1791 int flags = GPIOF_DIR_OUT;
1793 flags |= GPIOF_INIT_HIGH;
1794 ret = devm_gpio_request_one(&c->dev, g[i].gpio, flags, name[i]);
1796 v4l2_err(c, "failed to request gpio %s\n", name[i]);
1803 static int s5k5baf_parse_gpios(struct s5k5baf_gpio *gpios, struct device *dev)
1805 static const char * const names[] = {
1809 struct device_node *node = dev->of_node;
1810 enum of_gpio_flags flags;
1813 for (i = 0; i < NUM_GPIOS; ++i) {
1814 ret = of_get_named_gpio_flags(node, names[i], 0, &flags);
1816 dev_err(dev, "no %s GPIO pin provided\n", names[i]);
1819 gpios[i].gpio = ret;
1820 gpios[i].level = !(flags & OF_GPIO_ACTIVE_LOW);
1826 static int s5k5baf_parse_device_node(struct s5k5baf *state, struct device *dev)
1828 struct device_node *node = dev->of_node;
1829 struct device_node *node_ep;
1830 struct v4l2_of_endpoint ep;
1834 dev_err(dev, "no device-tree node provided\n");
1838 ret = of_property_read_u32(node, "clock-frequency",
1839 &state->mclk_frequency);
1841 state->mclk_frequency = S5K5BAF_DEFAULT_MCLK_FREQ;
1842 dev_info(dev, "using default %u Hz clock frequency\n",
1843 state->mclk_frequency);
1846 ret = s5k5baf_parse_gpios(state->gpios, dev);
1850 node_ep = v4l2_of_get_next_endpoint(node, NULL);
1852 dev_err(dev, "no endpoint defined at node %s\n",
1857 v4l2_of_parse_endpoint(node_ep, &ep);
1858 of_node_put(node_ep);
1859 state->bus_type = ep.bus_type;
1861 switch (state->bus_type) {
1862 case V4L2_MBUS_CSI2:
1863 state->nlanes = ep.bus.mipi_csi2.num_data_lanes;
1865 case V4L2_MBUS_PARALLEL:
1868 dev_err(dev, "unsupported bus in endpoint defined at node %s\n",
1876 static int s5k5baf_configure_subdevs(struct s5k5baf *state,
1877 struct i2c_client *c)
1879 struct v4l2_subdev *sd;
1882 sd = &state->cis_sd;
1883 v4l2_subdev_init(sd, &s5k5baf_cis_subdev_ops);
1884 sd->owner = THIS_MODULE;
1885 v4l2_set_subdevdata(sd, state);
1886 snprintf(sd->name, sizeof(sd->name), "S5K5BAF-CIS %d-%04x",
1887 i2c_adapter_id(c->adapter), c->addr);
1889 sd->internal_ops = &s5k5baf_cis_subdev_internal_ops;
1890 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1892 state->cis_pad.flags = MEDIA_PAD_FL_SOURCE;
1893 sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
1894 ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad, 0);
1899 v4l2_i2c_subdev_init(sd, c, &s5k5baf_subdev_ops);
1900 snprintf(sd->name, sizeof(sd->name), "S5K5BAF-ISP %d-%04x",
1901 i2c_adapter_id(c->adapter), c->addr);
1903 sd->internal_ops = &s5k5baf_subdev_internal_ops;
1904 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1906 state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK;
1907 state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
1908 sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
1909 ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads, 0);
1914 media_entity_cleanup(&state->cis_sd.entity);
1916 dev_err(&c->dev, "cannot init media entity %s\n", sd->name);
1920 static int s5k5baf_configure_regulators(struct s5k5baf *state)
1922 struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
1926 for (i = 0; i < S5K5BAF_NUM_SUPPLIES; i++)
1927 state->supplies[i].supply = s5k5baf_supply_names[i];
1929 ret = devm_regulator_bulk_get(&c->dev, S5K5BAF_NUM_SUPPLIES,
1932 v4l2_err(c, "failed to get regulators\n");
1936 static int s5k5baf_probe(struct i2c_client *c,
1937 const struct i2c_device_id *id)
1939 struct s5k5baf *state;
1942 state = devm_kzalloc(&c->dev, sizeof(*state), GFP_KERNEL);
1946 mutex_init(&state->lock);
1947 state->crop_sink = s5k5baf_cis_rect;
1948 state->compose = s5k5baf_cis_rect;
1949 state->crop_source = s5k5baf_cis_rect;
1951 ret = s5k5baf_parse_device_node(state, &c->dev);
1955 ret = s5k5baf_configure_subdevs(state, c);
1959 ret = s5k5baf_configure_gpios(state);
1963 ret = s5k5baf_configure_regulators(state);
1967 state->clock = devm_clk_get(state->sd.dev, S5K5BAF_CLK_NAME);
1968 if (IS_ERR(state->clock)) {
1969 ret = -EPROBE_DEFER;
1973 ret = s5k5baf_power_on(state);
1975 ret = -EPROBE_DEFER;
1978 s5k5baf_hw_init(state);
1979 ret = s5k5baf_check_fw_revision(state);
1981 s5k5baf_power_off(state);
1985 ret = s5k5baf_initialize_ctrls(state);
1989 ret = v4l2_async_register_subdev(&state->sd);
1996 v4l2_ctrl_handler_free(state->sd.ctrl_handler);
1998 media_entity_cleanup(&state->sd.entity);
1999 media_entity_cleanup(&state->cis_sd.entity);
2003 static int s5k5baf_remove(struct i2c_client *c)
2005 struct v4l2_subdev *sd = i2c_get_clientdata(c);
2006 struct s5k5baf *state = to_s5k5baf(sd);
2008 v4l2_async_unregister_subdev(sd);
2009 v4l2_ctrl_handler_free(sd->ctrl_handler);
2010 media_entity_cleanup(&sd->entity);
2012 sd = &state->cis_sd;
2013 v4l2_device_unregister_subdev(sd);
2014 media_entity_cleanup(&sd->entity);
2019 static const struct i2c_device_id s5k5baf_id[] = {
2020 { S5K5BAF_DRIVER_NAME, 0 },
2023 MODULE_DEVICE_TABLE(i2c, s5k5baf_id);
2025 static const struct of_device_id s5k5baf_of_match[] = {
2026 { .compatible = "samsung,s5k5baf" },
2029 MODULE_DEVICE_TABLE(of, s5k5baf_of_match);
2031 static struct i2c_driver s5k5baf_i2c_driver = {
2033 .of_match_table = s5k5baf_of_match,
2034 .name = S5K5BAF_DRIVER_NAME
2036 .probe = s5k5baf_probe,
2037 .remove = s5k5baf_remove,
2038 .id_table = s5k5baf_id,
2041 module_i2c_driver(s5k5baf_i2c_driver);
2043 MODULE_DESCRIPTION("Samsung S5K5BAF(X) UXGA camera driver");
2044 MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");
2045 MODULE_LICENSE("GPL v2");