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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd4 */5 6#include <linux/delay.h>7#include <linux/gpio/consumer.h>8#include <linux/module.h>9#include <linux/of.h>10#include <linux/regulator/consumer.h>11 12#include <video/mipi_display.h>13 14#include <drm/drm_crtc.h>15#include <drm/drm_device.h>16#include <drm/drm_mipi_dsi.h>17#include <drm/drm_modes.h>18#include <drm/drm_panel.h>19 20struct innolux_panel;21 22struct panel_desc {23 const struct drm_display_mode *mode;24 unsigned int bpc;25 struct {26 unsigned int width;27 unsigned int height;28 } size;29 30 unsigned long flags;31 enum mipi_dsi_pixel_format format;32 int (*init)(struct innolux_panel *innolux);33 unsigned int lanes;34 const char * const *supply_names;35 unsigned int num_supplies;36 unsigned int sleep_mode_delay;37 unsigned int power_down_delay;38};39 40struct innolux_panel {41 struct drm_panel base;42 struct mipi_dsi_device *link;43 const struct panel_desc *desc;44 45 struct regulator_bulk_data *supplies;46 struct gpio_desc *enable_gpio;47};48 49static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)50{51 return container_of(panel, struct innolux_panel, base);52}53 54static int innolux_panel_unprepare(struct drm_panel *panel)55{56 struct innolux_panel *innolux = to_innolux_panel(panel);57 int err;58 59 err = mipi_dsi_dcs_set_display_off(innolux->link);60 if (err < 0)61 dev_err(panel->dev, "failed to set display off: %d\n", err);62 63 err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);64 if (err < 0) {65 dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);66 return err;67 }68 69 if (innolux->desc->sleep_mode_delay)70 msleep(innolux->desc->sleep_mode_delay);71 72 gpiod_set_value_cansleep(innolux->enable_gpio, 0);73 74 if (innolux->desc->power_down_delay)75 msleep(innolux->desc->power_down_delay);76 77 err = regulator_bulk_disable(innolux->desc->num_supplies,78 innolux->supplies);79 if (err < 0)80 return err;81 82 return 0;83}84 85static int innolux_panel_prepare(struct drm_panel *panel)86{87 struct innolux_panel *innolux = to_innolux_panel(panel);88 int err;89 90 gpiod_set_value_cansleep(innolux->enable_gpio, 0);91 92 err = regulator_bulk_enable(innolux->desc->num_supplies,93 innolux->supplies);94 if (err < 0)95 return err;96 97 /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */98 usleep_range(20000, 21000);99 100 gpiod_set_value_cansleep(innolux->enable_gpio, 1);101 102 /* p079zca: t4, p097pfg: t5 */103 usleep_range(20000, 21000);104 105 if (innolux->desc->init) {106 err = innolux->desc->init(innolux);107 if (err < 0)108 goto poweroff;109 }110 111 err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);112 if (err < 0) {113 dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);114 goto poweroff;115 }116 117 /* T6: 120ms - 1000ms*/118 msleep(120);119 120 err = mipi_dsi_dcs_set_display_on(innolux->link);121 if (err < 0) {122 dev_err(panel->dev, "failed to set display on: %d\n", err);123 goto poweroff;124 }125 126 /* T7: 5ms */127 usleep_range(5000, 6000);128 129 return 0;130 131poweroff:132 gpiod_set_value_cansleep(innolux->enable_gpio, 0);133 regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);134 135 return err;136}137 138static const char * const innolux_p079zca_supply_names[] = {139 "power",140};141 142static const struct drm_display_mode innolux_p079zca_mode = {143 .clock = 56900,144 .hdisplay = 768,145 .hsync_start = 768 + 40,146 .hsync_end = 768 + 40 + 40,147 .htotal = 768 + 40 + 40 + 40,148 .vdisplay = 1024,149 .vsync_start = 1024 + 20,150 .vsync_end = 1024 + 20 + 4,151 .vtotal = 1024 + 20 + 4 + 20,152};153 154static const struct panel_desc innolux_p079zca_panel_desc = {155 .mode = &innolux_p079zca_mode,156 .bpc = 8,157 .size = {158 .width = 120,159 .height = 160,160 },161 .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |162 MIPI_DSI_MODE_LPM,163 .format = MIPI_DSI_FMT_RGB888,164 .lanes = 4,165 .supply_names = innolux_p079zca_supply_names,166 .num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),167 .power_down_delay = 80, /* T8: 80ms - 1000ms */168};169 170static const char * const innolux_p097pfg_supply_names[] = {171 "avdd",172 "avee",173};174 175static const struct drm_display_mode innolux_p097pfg_mode = {176 .clock = 229000,177 .hdisplay = 1536,178 .hsync_start = 1536 + 100,179 .hsync_end = 1536 + 100 + 24,180 .htotal = 1536 + 100 + 24 + 100,181 .vdisplay = 2048,182 .vsync_start = 2048 + 100,183 .vsync_end = 2048 + 100 + 2,184 .vtotal = 2048 + 100 + 2 + 18,185};186 187static void innolux_panel_write_multi(struct mipi_dsi_multi_context *ctx,188 const void *payload, size_t size)189{190 mipi_dsi_generic_write_multi(ctx, payload, size);191 192 /*193 * Included by random guessing, because without this194 * (or at least, some delay), the panel sometimes195 * didn't appear to pick up the command sequence.196 */197 mipi_dsi_dcs_nop_multi(ctx);198}199 200#define innolux_panel_init_cmd_multi(ctx, seq...) \201 do { \202 static const u8 d[] = { seq }; \203 innolux_panel_write_multi(ctx, d, ARRAY_SIZE(d)); \204 } while (0)205 206#define innolux_panel_switch_page(ctx, page) \207 innolux_panel_init_cmd_multi(ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, (page))208 209/*210 * Display manufacturer failed to provide init sequencing according to211 * https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/212 * so the init sequence stems from a register dump of a working panel.213 */214static int innolux_p097pfg_init(struct innolux_panel *innolux)215{216 struct mipi_dsi_multi_context ctx = { .dsi = innolux->link };217 218 innolux_panel_switch_page(&ctx, 0x00);219 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0xe8, 0x11);220 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x25, 0x02);221 innolux_panel_init_cmd_multi(&ctx, 0xb5, 0x08, 0x00);222 innolux_panel_init_cmd_multi(&ctx, 0xbc, 0x0f, 0x00);223 innolux_panel_init_cmd_multi(&ctx, 0xb8, 0x03, 0x06, 0x00, 0x00);224 innolux_panel_init_cmd_multi(&ctx, 0xbd, 0x01, 0x90, 0x14, 0x14);225 innolux_panel_init_cmd_multi(&ctx, 0x6f, 0x01);226 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x03);227 innolux_panel_init_cmd_multi(&ctx, 0x6f, 0x02);228 innolux_panel_init_cmd_multi(&ctx, 0xc1, 0x0d);229 innolux_panel_init_cmd_multi(&ctx, 0xd9, 0x01, 0x09, 0x70);230 innolux_panel_init_cmd_multi(&ctx, 0xc5, 0x12, 0x21, 0x00);231 innolux_panel_init_cmd_multi(&ctx, 0xbb, 0x93, 0x93);232 233 innolux_panel_switch_page(&ctx, 0x01);234 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x3c, 0x3c);235 innolux_panel_init_cmd_multi(&ctx, 0xb4, 0x0f, 0x0f);236 innolux_panel_init_cmd_multi(&ctx, 0xb9, 0x45, 0x45);237 innolux_panel_init_cmd_multi(&ctx, 0xba, 0x14, 0x14);238 innolux_panel_init_cmd_multi(&ctx, 0xca, 0x02);239 innolux_panel_init_cmd_multi(&ctx, 0xce, 0x04);240 innolux_panel_init_cmd_multi(&ctx, 0xc3, 0x9b, 0x9b);241 innolux_panel_init_cmd_multi(&ctx, 0xd8, 0xc0, 0x03);242 innolux_panel_init_cmd_multi(&ctx, 0xbc, 0x82, 0x01);243 innolux_panel_init_cmd_multi(&ctx, 0xbd, 0x9e, 0x01);244 245 innolux_panel_switch_page(&ctx, 0x02);246 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x82);247 innolux_panel_init_cmd_multi(&ctx, 0xd1, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x82, 0x00, 0xa5,248 0x00, 0xc1, 0x00, 0xea, 0x01, 0x0d, 0x01, 0x40);249 innolux_panel_init_cmd_multi(&ctx, 0xd2, 0x01, 0x6a, 0x01, 0xa8, 0x01, 0xdc, 0x02, 0x29,250 0x02, 0x67, 0x02, 0x68, 0x02, 0xa8, 0x02, 0xf0);251 innolux_panel_init_cmd_multi(&ctx, 0xd3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8c,252 0x03, 0xa6, 0x03, 0xc7, 0x03, 0xde, 0x03, 0xec);253 innolux_panel_init_cmd_multi(&ctx, 0xd4, 0x03, 0xff, 0x03, 0xff);254 innolux_panel_init_cmd_multi(&ctx, 0xe0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xc5, 0x00, 0xe5,255 0x00, 0xff, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75);256 innolux_panel_init_cmd_multi(&ctx, 0xe1, 0x01, 0x9c, 0x01, 0xd5, 0x02, 0x05, 0x02, 0x4d,257 0x02, 0x86, 0x02, 0x87, 0x02, 0xc3, 0x03, 0x03);258 innolux_panel_init_cmd_multi(&ctx, 0xe2, 0x03, 0x2a, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94,259 0x03, 0xac, 0x03, 0xcb, 0x03, 0xe0, 0x03, 0xed);260 innolux_panel_init_cmd_multi(&ctx, 0xe3, 0x03, 0xff, 0x03, 0xff);261 262 innolux_panel_switch_page(&ctx, 0x03);263 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x00, 0x00, 0x00, 0x00);264 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0x00, 0x00, 0x00, 0x00);265 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85);266 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x10, 0x07, 0xfc, 0x04, 0x01, 0x40, 0x80);267 innolux_panel_init_cmd_multi(&ctx, 0xb6, 0xf0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01,268 0x40, 0x80);269 innolux_panel_init_cmd_multi(&ctx, 0xba, 0xc5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8c);270 innolux_panel_init_cmd_multi(&ctx, 0xbb, 0xc5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8c);271 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x80, 0x80);272 innolux_panel_init_cmd_multi(&ctx, 0xc1, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x80, 0x80);273 innolux_panel_init_cmd_multi(&ctx, 0xc4, 0x00, 0x00);274 innolux_panel_init_cmd_multi(&ctx, 0xef, 0x41);275 276 innolux_panel_switch_page(&ctx, 0x04);277 innolux_panel_init_cmd_multi(&ctx, 0xec, 0x4c);278 279 innolux_panel_switch_page(&ctx, 0x05);280 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x13, 0x03, 0x03, 0x01);281 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0x30, 0x00);282 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x02, 0x02, 0x00);283 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x82, 0x23, 0x82, 0x9d);284 innolux_panel_init_cmd_multi(&ctx, 0xb4, 0xc5, 0x75, 0x24, 0x57);285 innolux_panel_init_cmd_multi(&ctx, 0xb5, 0x00, 0xd4, 0x72, 0x11, 0x11, 0xab, 0x0a);286 innolux_panel_init_cmd_multi(&ctx, 0xb6, 0x00, 0x00, 0xd5, 0x72, 0x24, 0x56);287 innolux_panel_init_cmd_multi(&ctx, 0xb7, 0x5c, 0xdc, 0x5c, 0x5c);288 innolux_panel_init_cmd_multi(&ctx, 0xb9, 0x0c, 0x00, 0x00, 0x01, 0x00);289 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x75, 0x11, 0x11, 0x54, 0x05);290 innolux_panel_init_cmd_multi(&ctx, 0xc6, 0x00, 0x00, 0x00, 0x00);291 innolux_panel_init_cmd_multi(&ctx, 0xd0, 0x00, 0x48, 0x08, 0x00, 0x00);292 innolux_panel_init_cmd_multi(&ctx, 0xd1, 0x00, 0x48, 0x09, 0x00, 0x00);293 294 innolux_panel_switch_page(&ctx, 0x06);295 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x02, 0x32, 0x32, 0x08, 0x2f);296 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0x2e, 0x15, 0x14, 0x13, 0x12);297 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x11, 0x10, 0x00, 0x3d, 0x3d);298 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);299 innolux_panel_init_cmd_multi(&ctx, 0xb4, 0x3d, 0x32);300 innolux_panel_init_cmd_multi(&ctx, 0xb5, 0x03, 0x32, 0x32, 0x09, 0x2f);301 innolux_panel_init_cmd_multi(&ctx, 0xb6, 0x2e, 0x1b, 0x1a, 0x19, 0x18);302 innolux_panel_init_cmd_multi(&ctx, 0xb7, 0x17, 0x16, 0x01, 0x3d, 0x3d);303 innolux_panel_init_cmd_multi(&ctx, 0xb8, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);304 innolux_panel_init_cmd_multi(&ctx, 0xb9, 0x3d, 0x32);305 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x01, 0x32, 0x32, 0x09, 0x2f);306 innolux_panel_init_cmd_multi(&ctx, 0xc1, 0x2e, 0x1a, 0x1b, 0x16, 0x17);307 innolux_panel_init_cmd_multi(&ctx, 0xc2, 0x18, 0x19, 0x03, 0x3d, 0x3d);308 innolux_panel_init_cmd_multi(&ctx, 0xc3, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);309 innolux_panel_init_cmd_multi(&ctx, 0xc4, 0x3d, 0x32);310 innolux_panel_init_cmd_multi(&ctx, 0xc5, 0x00, 0x32, 0x32, 0x08, 0x2f);311 innolux_panel_init_cmd_multi(&ctx, 0xc6, 0x2e, 0x14, 0x15, 0x10, 0x11);312 innolux_panel_init_cmd_multi(&ctx, 0xc7, 0x12, 0x13, 0x02, 0x3d, 0x3d);313 innolux_panel_init_cmd_multi(&ctx, 0xc8, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);314 innolux_panel_init_cmd_multi(&ctx, 0xc9, 0x3d, 0x32);315 316 return ctx.accum_err;317}318 319static const struct panel_desc innolux_p097pfg_panel_desc = {320 .mode = &innolux_p097pfg_mode,321 .bpc = 8,322 .size = {323 .width = 147,324 .height = 196,325 },326 .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |327 MIPI_DSI_MODE_LPM,328 .format = MIPI_DSI_FMT_RGB888,329 .init = innolux_p097pfg_init,330 .lanes = 4,331 .supply_names = innolux_p097pfg_supply_names,332 .num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names),333 .sleep_mode_delay = 100, /* T15 */334};335 336static int innolux_panel_get_modes(struct drm_panel *panel,337 struct drm_connector *connector)338{339 struct innolux_panel *innolux = to_innolux_panel(panel);340 const struct drm_display_mode *m = innolux->desc->mode;341 struct drm_display_mode *mode;342 343 mode = drm_mode_duplicate(connector->dev, m);344 if (!mode) {345 dev_err(panel->dev, "failed to add mode %ux%u@%u\n",346 m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));347 return -ENOMEM;348 }349 350 drm_mode_set_name(mode);351 352 drm_mode_probed_add(connector, mode);353 354 connector->display_info.width_mm = innolux->desc->size.width;355 connector->display_info.height_mm = innolux->desc->size.height;356 connector->display_info.bpc = innolux->desc->bpc;357 358 return 1;359}360 361static const struct drm_panel_funcs innolux_panel_funcs = {362 .unprepare = innolux_panel_unprepare,363 .prepare = innolux_panel_prepare,364 .get_modes = innolux_panel_get_modes,365};366 367static const struct of_device_id innolux_of_match[] = {368 { .compatible = "innolux,p079zca",369 .data = &innolux_p079zca_panel_desc370 },371 { .compatible = "innolux,p097pfg",372 .data = &innolux_p097pfg_panel_desc373 },374 { }375};376MODULE_DEVICE_TABLE(of, innolux_of_match);377 378static int innolux_panel_add(struct mipi_dsi_device *dsi,379 const struct panel_desc *desc)380{381 struct innolux_panel *innolux;382 struct device *dev = &dsi->dev;383 int err, i;384 385 innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);386 if (!innolux)387 return -ENOMEM;388 389 innolux->desc = desc;390 391 innolux->supplies = devm_kcalloc(dev, desc->num_supplies,392 sizeof(*innolux->supplies),393 GFP_KERNEL);394 if (!innolux->supplies)395 return -ENOMEM;396 397 for (i = 0; i < desc->num_supplies; i++)398 innolux->supplies[i].supply = desc->supply_names[i];399 400 err = devm_regulator_bulk_get(dev, desc->num_supplies,401 innolux->supplies);402 if (err < 0)403 return err;404 405 innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",406 GPIOD_OUT_HIGH);407 if (IS_ERR(innolux->enable_gpio)) {408 err = PTR_ERR(innolux->enable_gpio);409 dev_dbg(dev, "failed to get enable gpio: %d\n", err);410 innolux->enable_gpio = NULL;411 }412 413 drm_panel_init(&innolux->base, dev, &innolux_panel_funcs,414 DRM_MODE_CONNECTOR_DSI);415 416 err = drm_panel_of_backlight(&innolux->base);417 if (err)418 return err;419 420 drm_panel_add(&innolux->base);421 422 mipi_dsi_set_drvdata(dsi, innolux);423 innolux->link = dsi;424 425 return 0;426}427 428static void innolux_panel_del(struct innolux_panel *innolux)429{430 drm_panel_remove(&innolux->base);431}432 433static int innolux_panel_probe(struct mipi_dsi_device *dsi)434{435 const struct panel_desc *desc;436 struct innolux_panel *innolux;437 int err;438 439 desc = of_device_get_match_data(&dsi->dev);440 dsi->mode_flags = desc->flags;441 dsi->format = desc->format;442 dsi->lanes = desc->lanes;443 444 err = innolux_panel_add(dsi, desc);445 if (err < 0)446 return err;447 448 err = mipi_dsi_attach(dsi);449 if (err < 0) {450 innolux = mipi_dsi_get_drvdata(dsi);451 innolux_panel_del(innolux);452 return err;453 }454 455 return 0;456}457 458static void innolux_panel_remove(struct mipi_dsi_device *dsi)459{460 struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);461 int err;462 463 464 err = mipi_dsi_detach(dsi);465 if (err < 0)466 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);467 468 innolux_panel_del(innolux);469}470 471static struct mipi_dsi_driver innolux_panel_driver = {472 .driver = {473 .name = "panel-innolux-p079zca",474 .of_match_table = innolux_of_match,475 },476 .probe = innolux_panel_probe,477 .remove = innolux_panel_remove,478};479module_mipi_dsi_driver(innolux_panel_driver);480 481MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");482MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>");483MODULE_DESCRIPTION("Innolux P079ZCA panel driver");484MODULE_LICENSE("GPL v2");485