1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
6 #include <linux/backlight.h>
7 #include <linux/delay.h>
8 #include <linux/gpio/consumer.h>
9 #include <linux/module.h>
11 #include <linux/of_graph.h>
12 #include <linux/pinctrl/consumer.h>
13 #include <linux/regulator/consumer.h>
15 #include <video/mipi_display.h>
17 #include <drm/drm_mipi_dsi.h>
18 #include <drm/drm_modes.h>
19 #include <drm/drm_panel.h>
21 static const char * const regulator_names[] = {
27 static unsigned long const regulator_enable_loads[] = {
33 static unsigned long const regulator_disable_loads[] = {
44 struct nt35597_config {
47 const char *panel_name;
48 const struct cmd_set *panel_on_cmds;
50 const struct drm_display_mode *dm;
53 struct truly_nt35597 {
55 struct drm_panel panel;
57 struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)];
59 struct gpio_desc *reset_gpio;
60 struct gpio_desc *mode_gpio;
62 struct backlight_device *backlight;
64 struct mipi_dsi_device *dsi[2];
66 const struct nt35597_config *config;
69 static inline struct truly_nt35597 *panel_to_ctx(struct drm_panel *panel)
71 return container_of(panel, struct truly_nt35597, panel);
74 static const struct cmd_set qcom_2k_panel_magic_cmds[] = {
76 { { 0xff, 0x20 }, 2 },
77 { { 0xfb, 0x01 }, 2 },
78 { { 0x00, 0x01 }, 2 },
79 { { 0x01, 0x55 }, 2 },
80 { { 0x02, 0x45 }, 2 },
81 { { 0x05, 0x40 }, 2 },
82 { { 0x06, 0x19 }, 2 },
83 { { 0x07, 0x1e }, 2 },
84 { { 0x0b, 0x73 }, 2 },
85 { { 0x0c, 0x73 }, 2 },
86 { { 0x0e, 0xb0 }, 2 },
87 { { 0x0f, 0xae }, 2 },
88 { { 0x11, 0xb8 }, 2 },
89 { { 0x13, 0x00 }, 2 },
90 { { 0x58, 0x80 }, 2 },
91 { { 0x59, 0x01 }, 2 },
92 { { 0x5a, 0x00 }, 2 },
93 { { 0x5b, 0x01 }, 2 },
94 { { 0x5c, 0x80 }, 2 },
95 { { 0x5d, 0x81 }, 2 },
96 { { 0x5e, 0x00 }, 2 },
97 { { 0x5f, 0x01 }, 2 },
98 { { 0x72, 0x11 }, 2 },
99 { { 0x68, 0x03 }, 2 },
101 { { 0xFF, 0x24 }, 2 },
102 { { 0xFB, 0x01 }, 2 },
103 { { 0x00, 0x1C }, 2 },
104 { { 0x01, 0x0B }, 2 },
105 { { 0x02, 0x0C }, 2 },
106 { { 0x03, 0x01 }, 2 },
107 { { 0x04, 0x0F }, 2 },
108 { { 0x05, 0x10 }, 2 },
109 { { 0x06, 0x10 }, 2 },
110 { { 0x07, 0x10 }, 2 },
111 { { 0x08, 0x89 }, 2 },
112 { { 0x09, 0x8A }, 2 },
113 { { 0x0A, 0x13 }, 2 },
114 { { 0x0B, 0x13 }, 2 },
115 { { 0x0C, 0x15 }, 2 },
116 { { 0x0D, 0x15 }, 2 },
117 { { 0x0E, 0x17 }, 2 },
118 { { 0x0F, 0x17 }, 2 },
119 { { 0x10, 0x1C }, 2 },
120 { { 0x11, 0x0B }, 2 },
121 { { 0x12, 0x0C }, 2 },
122 { { 0x13, 0x01 }, 2 },
123 { { 0x14, 0x0F }, 2 },
124 { { 0x15, 0x10 }, 2 },
125 { { 0x16, 0x10 }, 2 },
126 { { 0x17, 0x10 }, 2 },
127 { { 0x18, 0x89 }, 2 },
128 { { 0x19, 0x8A }, 2 },
129 { { 0x1A, 0x13 }, 2 },
130 { { 0x1B, 0x13 }, 2 },
131 { { 0x1C, 0x15 }, 2 },
132 { { 0x1D, 0x15 }, 2 },
133 { { 0x1E, 0x17 }, 2 },
134 { { 0x1F, 0x17 }, 2 },
136 { { 0x20, 0x40 }, 2 },
137 { { 0x21, 0x01 }, 2 },
138 { { 0x22, 0x00 }, 2 },
139 { { 0x23, 0x40 }, 2 },
140 { { 0x24, 0x40 }, 2 },
141 { { 0x25, 0x6D }, 2 },
142 { { 0x26, 0x40 }, 2 },
143 { { 0x27, 0x40 }, 2 },
145 { { 0xE0, 0x00 }, 2 },
146 { { 0xDC, 0x21 }, 2 },
147 { { 0xDD, 0x22 }, 2 },
148 { { 0xDE, 0x07 }, 2 },
149 { { 0xDF, 0x07 }, 2 },
150 { { 0xE3, 0x6D }, 2 },
151 { { 0xE1, 0x07 }, 2 },
152 { { 0xE2, 0x07 }, 2 },
154 { { 0x29, 0xD8 }, 2 },
155 { { 0x2A, 0x2A }, 2 },
157 { { 0x4B, 0x03 }, 2 },
158 { { 0x4C, 0x11 }, 2 },
159 { { 0x4D, 0x10 }, 2 },
160 { { 0x4E, 0x01 }, 2 },
161 { { 0x4F, 0x01 }, 2 },
162 { { 0x50, 0x10 }, 2 },
163 { { 0x51, 0x00 }, 2 },
164 { { 0x52, 0x80 }, 2 },
165 { { 0x53, 0x00 }, 2 },
166 { { 0x56, 0x00 }, 2 },
167 { { 0x54, 0x07 }, 2 },
168 { { 0x58, 0x07 }, 2 },
169 { { 0x55, 0x25 }, 2 },
171 { { 0x5B, 0x43 }, 2 },
172 { { 0x5C, 0x00 }, 2 },
173 { { 0x5F, 0x73 }, 2 },
174 { { 0x60, 0x73 }, 2 },
175 { { 0x63, 0x22 }, 2 },
176 { { 0x64, 0x00 }, 2 },
177 { { 0x67, 0x08 }, 2 },
178 { { 0x68, 0x04 }, 2 },
179 /* Resolution:1440x2560 */
180 { { 0x72, 0x02 }, 2 },
182 { { 0x7A, 0x80 }, 2 },
183 { { 0x7B, 0x91 }, 2 },
184 { { 0x7C, 0xD8 }, 2 },
185 { { 0x7D, 0x60 }, 2 },
186 { { 0x7F, 0x15 }, 2 },
187 { { 0x75, 0x15 }, 2 },
189 { { 0xB3, 0xC0 }, 2 },
190 { { 0xB4, 0x00 }, 2 },
191 { { 0xB5, 0x00 }, 2 },
193 { { 0x78, 0x00 }, 2 },
194 { { 0x79, 0x00 }, 2 },
195 { { 0x80, 0x00 }, 2 },
196 { { 0x83, 0x00 }, 2 },
198 { { 0x93, 0x0A }, 2 },
199 { { 0x94, 0x0A }, 2 },
201 { { 0x8A, 0x00 }, 2 },
202 { { 0x9B, 0xFF }, 2 },
203 /* IMGSWAP =1 @PortSwap=1 */
204 { { 0x9D, 0xB0 }, 2 },
205 { { 0x9F, 0x63 }, 2 },
206 { { 0x98, 0x10 }, 2 },
208 { { 0xEC, 0x00 }, 2 },
210 { { 0xFF, 0x10 }, 2 },
211 /* VBP+VSA=,VFP = 10H */
212 { { 0x3B, 0x03, 0x0A, 0x0A }, 4 },
214 { { 0x35, 0x00 }, 2 },
215 /* EN_BK =1(auto black) */
216 { { 0xE5, 0x01 }, 2 },
217 /* CMD mode(10) VDO mode(03) */
218 { { 0xBB, 0x03 }, 2 },
220 { { 0xFB, 0x01 }, 2 },
223 static int truly_dcs_write(struct drm_panel *panel, u32 command)
225 struct truly_nt35597 *ctx = panel_to_ctx(panel);
228 for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {
229 ret = mipi_dsi_dcs_write(ctx->dsi[i], command, NULL, 0);
231 dev_err(ctx->dev, "cmd 0x%x failed for dsi = %d\n", command, i);
238 static int truly_dcs_write_buf(struct drm_panel *panel,
239 u32 size, const u8 *buf)
241 struct truly_nt35597 *ctx = panel_to_ctx(panel);
245 for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {
246 ret = mipi_dsi_dcs_write_buffer(ctx->dsi[i], buf, size);
248 dev_err(ctx->dev, "failed to tx cmd [%d], err: %d\n", i, ret);
256 static int truly_35597_power_on(struct truly_nt35597 *ctx)
260 for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) {
261 ret = regulator_set_load(ctx->supplies[i].consumer,
262 regulator_enable_loads[i]);
267 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
272 * Reset sequence of truly panel requires the panel to be
273 * out of reset for 10ms, followed by being held in reset
274 * for 10ms and then out again
276 gpiod_set_value(ctx->reset_gpio, 0);
277 usleep_range(10000, 20000);
278 gpiod_set_value(ctx->reset_gpio, 1);
279 usleep_range(10000, 20000);
280 gpiod_set_value(ctx->reset_gpio, 0);
281 usleep_range(10000, 20000);
286 static int truly_nt35597_power_off(struct truly_nt35597 *ctx)
291 gpiod_set_value(ctx->reset_gpio, 1);
293 for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) {
294 ret = regulator_set_load(ctx->supplies[i].consumer,
295 regulator_disable_loads[i]);
297 dev_err(ctx->dev, "regulator_set_load failed %d\n", ret);
302 ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
304 dev_err(ctx->dev, "regulator_bulk_disable failed %d\n", ret);
309 static int truly_nt35597_disable(struct drm_panel *panel)
311 struct truly_nt35597 *ctx = panel_to_ctx(panel);
314 if (ctx->backlight) {
315 ret = backlight_disable(ctx->backlight);
317 dev_err(ctx->dev, "backlight disable failed %d\n", ret);
323 static int truly_nt35597_unprepare(struct drm_panel *panel)
325 struct truly_nt35597 *ctx = panel_to_ctx(panel);
328 ctx->dsi[0]->mode_flags = 0;
329 ctx->dsi[1]->mode_flags = 0;
331 ret = truly_dcs_write(panel, MIPI_DCS_SET_DISPLAY_OFF);
333 dev_err(ctx->dev, "set_display_off cmd failed ret = %d\n", ret);
336 /* 120ms delay required here as per DCS spec */
339 ret = truly_dcs_write(panel, MIPI_DCS_ENTER_SLEEP_MODE);
341 dev_err(ctx->dev, "enter_sleep cmd failed ret = %d\n", ret);
344 ret = truly_nt35597_power_off(ctx);
346 dev_err(ctx->dev, "power_off failed ret = %d\n", ret);
351 static int truly_nt35597_prepare(struct drm_panel *panel)
353 struct truly_nt35597 *ctx = panel_to_ctx(panel);
356 const struct cmd_set *panel_on_cmds;
357 const struct nt35597_config *config;
360 ret = truly_35597_power_on(ctx);
364 ctx->dsi[0]->mode_flags |= MIPI_DSI_MODE_LPM;
365 ctx->dsi[1]->mode_flags |= MIPI_DSI_MODE_LPM;
367 config = ctx->config;
368 panel_on_cmds = config->panel_on_cmds;
369 num_cmds = config->num_on_cmds;
371 for (i = 0; i < num_cmds; i++) {
372 ret = truly_dcs_write_buf(panel,
373 panel_on_cmds[i].size,
374 panel_on_cmds[i].commands);
376 dev_err(ctx->dev, "cmd set tx failed i = %d ret = %d\n", i, ret);
381 ret = truly_dcs_write(panel, MIPI_DCS_EXIT_SLEEP_MODE);
383 dev_err(ctx->dev, "exit_sleep_mode cmd failed ret = %d\n", ret);
387 /* Per DSI spec wait 120ms after sending exit sleep DCS command */
390 ret = truly_dcs_write(panel, MIPI_DCS_SET_DISPLAY_ON);
392 dev_err(ctx->dev, "set_display_on cmd failed ret = %d\n", ret);
396 /* Per DSI spec wait 120ms after sending set_display_on DCS command */
402 if (truly_nt35597_power_off(ctx))
403 dev_err(ctx->dev, "power_off failed\n");
407 static int truly_nt35597_enable(struct drm_panel *panel)
409 struct truly_nt35597 *ctx = panel_to_ctx(panel);
412 if (ctx->backlight) {
413 ret = backlight_enable(ctx->backlight);
415 dev_err(ctx->dev, "backlight enable failed %d\n", ret);
421 static int truly_nt35597_get_modes(struct drm_panel *panel,
422 struct drm_connector *connector)
424 struct truly_nt35597 *ctx = panel_to_ctx(panel);
425 struct drm_display_mode *mode;
426 const struct nt35597_config *config;
428 config = ctx->config;
429 mode = drm_mode_duplicate(connector->dev, config->dm);
431 dev_err(ctx->dev, "failed to create a new display mode\n");
435 connector->display_info.width_mm = config->width_mm;
436 connector->display_info.height_mm = config->height_mm;
437 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
438 drm_mode_probed_add(connector, mode);
443 static const struct drm_panel_funcs truly_nt35597_drm_funcs = {
444 .disable = truly_nt35597_disable,
445 .unprepare = truly_nt35597_unprepare,
446 .prepare = truly_nt35597_prepare,
447 .enable = truly_nt35597_enable,
448 .get_modes = truly_nt35597_get_modes,
451 static int truly_nt35597_panel_add(struct truly_nt35597 *ctx)
453 struct device *dev = ctx->dev;
456 for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++)
457 ctx->supplies[i].supply = regulator_names[i];
459 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
464 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
465 if (IS_ERR(ctx->reset_gpio)) {
466 dev_err(dev, "cannot get reset gpio %ld\n", PTR_ERR(ctx->reset_gpio));
467 return PTR_ERR(ctx->reset_gpio);
470 ctx->mode_gpio = devm_gpiod_get(dev, "mode", GPIOD_OUT_LOW);
471 if (IS_ERR(ctx->mode_gpio)) {
472 dev_err(dev, "cannot get mode gpio %ld\n", PTR_ERR(ctx->mode_gpio));
473 return PTR_ERR(ctx->mode_gpio);
477 gpiod_set_value(ctx->mode_gpio, 0);
479 drm_panel_init(&ctx->panel, dev, &truly_nt35597_drm_funcs,
480 DRM_MODE_CONNECTOR_DSI);
481 drm_panel_add(&ctx->panel);
486 static const struct drm_display_mode qcom_sdm845_mtp_2k_mode = {
490 .hsync_start = 1440 + 200,
491 .hsync_end = 1440 + 200 + 32,
492 .htotal = 1440 + 200 + 32 + 64,
494 .vsync_start = 2560 + 8,
495 .vsync_end = 2560 + 8 + 1,
496 .vtotal = 2560 + 8 + 1 + 7,
500 static const struct nt35597_config nt35597_dir = {
503 .panel_name = "qcom_sdm845_mtp_2k_panel",
504 .dm = &qcom_sdm845_mtp_2k_mode,
505 .panel_on_cmds = qcom_2k_panel_magic_cmds,
506 .num_on_cmds = ARRAY_SIZE(qcom_2k_panel_magic_cmds),
509 static int truly_nt35597_probe(struct mipi_dsi_device *dsi)
511 struct device *dev = &dsi->dev;
512 struct truly_nt35597 *ctx;
513 struct mipi_dsi_device *dsi1_device;
514 struct device_node *dsi1;
515 struct mipi_dsi_host *dsi1_host;
516 struct mipi_dsi_device *dsi_dev;
520 const struct mipi_dsi_device_info info = {
521 .type = "trulynt35597",
526 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
532 * This device represents itself as one with two input ports which are
533 * fed by the output ports of the two DSI controllers . The DSI0 is
534 * the master controller and has most of the panel related info in its
538 ctx->config = of_device_get_match_data(dev);
541 dev_err(dev, "missing device configuration\n");
545 dsi1 = of_graph_get_remote_node(dsi->dev.of_node, 1, -1);
547 dev_err(dev, "failed to get remote node for dsi1_device\n");
551 dsi1_host = of_find_mipi_dsi_host_by_node(dsi1);
554 dev_err(dev, "failed to find dsi host\n");
555 return -EPROBE_DEFER;
558 /* register the second DSI device */
559 dsi1_device = mipi_dsi_device_register_full(dsi1_host, &info);
560 if (IS_ERR(dsi1_device)) {
561 dev_err(dev, "failed to create dsi device\n");
562 return PTR_ERR(dsi1_device);
565 mipi_dsi_set_drvdata(dsi, ctx);
569 ctx->dsi[1] = dsi1_device;
571 ret = truly_nt35597_panel_add(ctx);
573 dev_err(dev, "failed to add panel\n");
577 for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {
578 dsi_dev = ctx->dsi[i];
580 dsi_dev->format = MIPI_DSI_FMT_RGB888;
581 dsi_dev->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM |
582 MIPI_DSI_CLOCK_NON_CONTINUOUS;
583 ret = mipi_dsi_attach(dsi_dev);
585 dev_err(dev, "dsi attach failed i = %d\n", i);
593 drm_panel_remove(&ctx->panel);
595 mipi_dsi_device_unregister(dsi1_device);
599 static void truly_nt35597_remove(struct mipi_dsi_device *dsi)
601 struct truly_nt35597 *ctx = mipi_dsi_get_drvdata(dsi);
604 mipi_dsi_detach(ctx->dsi[0]);
606 mipi_dsi_detach(ctx->dsi[1]);
607 mipi_dsi_device_unregister(ctx->dsi[1]);
610 drm_panel_remove(&ctx->panel);
613 static const struct of_device_id truly_nt35597_of_match[] = {
615 .compatible = "truly,nt35597-2K-display",
616 .data = &nt35597_dir,
620 MODULE_DEVICE_TABLE(of, truly_nt35597_of_match);
622 static struct mipi_dsi_driver truly_nt35597_driver = {
624 .name = "panel-truly-nt35597",
625 .of_match_table = truly_nt35597_of_match,
627 .probe = truly_nt35597_probe,
628 .remove = truly_nt35597_remove,
630 module_mipi_dsi_driver(truly_nt35597_driver);
632 MODULE_DESCRIPTION("Truly NT35597 DSI Panel Driver");
633 MODULE_LICENSE("GPL v2");