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1// SPDX-License-Identifier: GPL-2.0-only2 3#include <linux/backlight.h>4#include <linux/delay.h>5#include <linux/gpio/consumer.h>6#include <linux/module.h>7#include <linux/of.h>8#include <linux/regulator/consumer.h>9 10#include <drm/drm_mipi_dsi.h>11#include <drm/drm_modes.h>12#include <drm/drm_panel.h>13 14struct tm5p5_nt35596 {15 struct drm_panel panel;16 struct mipi_dsi_device *dsi;17 struct regulator_bulk_data supplies[2];18 struct gpio_desc *reset_gpio;19};20 21static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel)22{23 return container_of(panel, struct tm5p5_nt35596, panel);24}25 26static void tm5p5_nt35596_reset(struct tm5p5_nt35596 *ctx)27{28 gpiod_set_value_cansleep(ctx->reset_gpio, 1);29 usleep_range(1000, 2000);30 gpiod_set_value_cansleep(ctx->reset_gpio, 0);31 usleep_range(1000, 2000);32 gpiod_set_value_cansleep(ctx->reset_gpio, 1);33 usleep_range(15000, 16000);34}35 36static void tm5p5_nt35596_on(struct mipi_dsi_multi_context *dsi_ctx)37{38 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x05);39 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);40 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xc5, 0x31);41 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x04);42 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x01, 0x84);43 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x05, 0x25);44 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x06, 0x01);45 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x07, 0x20);46 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x08, 0x06);47 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x09, 0x08);48 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0a, 0x10);49 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0b, 0x10);50 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0c, 0x10);51 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0d, 0x14);52 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0e, 0x14);53 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0f, 0x14);54 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x10, 0x14);55 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x14);56 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x12, 0x14);57 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x17, 0xf3);58 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x18, 0xc0);59 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x19, 0xc0);60 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1a, 0xc0);61 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1b, 0xb3);62 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1c, 0xb3);63 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1d, 0xb3);64 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1e, 0xb3);65 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1f, 0xb3);66 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x20, 0xb3);67 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);68 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x00);69 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);70 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x35, 0x01);71 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd3, 0x06);72 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd4, 0x04);73 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x5e, 0x0d);74 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x00);75 76 mipi_dsi_msleep(dsi_ctx, 100);77 78 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x29, 0x00);79 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x53, 0x24);80}81 82static void tm5p5_nt35596_off(struct mipi_dsi_multi_context *dsi_ctx)83{84 mipi_dsi_dcs_set_display_off_multi(dsi_ctx);85 86 mipi_dsi_msleep(dsi_ctx, 60);87 88 mipi_dsi_dcs_enter_sleep_mode_multi(dsi_ctx);89 90 mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0x4f, 0x01);91}92 93static int tm5p5_nt35596_prepare(struct drm_panel *panel)94{95 struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);96 struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi};97 98 dsi_ctx.accum_err = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);99 if (dsi_ctx.accum_err)100 return dsi_ctx.accum_err;101 102 tm5p5_nt35596_reset(ctx);103 104 tm5p5_nt35596_on(&dsi_ctx);105 106 if (dsi_ctx.accum_err) {107 gpiod_set_value_cansleep(ctx->reset_gpio, 0);108 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),109 ctx->supplies);110 }111 112 return dsi_ctx.accum_err;113}114 115static int tm5p5_nt35596_unprepare(struct drm_panel *panel)116{117 struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);118 struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi};119 120 tm5p5_nt35596_off(&dsi_ctx);121 122 gpiod_set_value_cansleep(ctx->reset_gpio, 0);123 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),124 ctx->supplies);125 126 return dsi_ctx.accum_err;127}128 129static const struct drm_display_mode tm5p5_nt35596_mode = {130 .clock = (1080 + 100 + 8 + 16) * (1920 + 4 + 2 + 4) * 60 / 1000,131 .hdisplay = 1080,132 .hsync_start = 1080 + 100,133 .hsync_end = 1080 + 100 + 8,134 .htotal = 1080 + 100 + 8 + 16,135 .vdisplay = 1920,136 .vsync_start = 1920 + 4,137 .vsync_end = 1920 + 4 + 2,138 .vtotal = 1920 + 4 + 2 + 4,139 .width_mm = 68,140 .height_mm = 121,141};142 143static int tm5p5_nt35596_get_modes(struct drm_panel *panel,144 struct drm_connector *connector)145{146 struct drm_display_mode *mode;147 148 mode = drm_mode_duplicate(connector->dev, &tm5p5_nt35596_mode);149 if (!mode)150 return -ENOMEM;151 152 drm_mode_set_name(mode);153 154 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;155 connector->display_info.width_mm = mode->width_mm;156 connector->display_info.height_mm = mode->height_mm;157 drm_mode_probed_add(connector, mode);158 159 return 1;160}161 162static const struct drm_panel_funcs tm5p5_nt35596_panel_funcs = {163 .prepare = tm5p5_nt35596_prepare,164 .unprepare = tm5p5_nt35596_unprepare,165 .get_modes = tm5p5_nt35596_get_modes,166};167 168static int tm5p5_nt35596_bl_update_status(struct backlight_device *bl)169{170 struct mipi_dsi_device *dsi = bl_get_data(bl);171 u16 brightness = backlight_get_brightness(bl);172 int ret;173 174 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;175 176 ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);177 if (ret < 0)178 return ret;179 180 dsi->mode_flags |= MIPI_DSI_MODE_LPM;181 182 return 0;183}184 185static int tm5p5_nt35596_bl_get_brightness(struct backlight_device *bl)186{187 struct mipi_dsi_device *dsi = bl_get_data(bl);188 u16 brightness = bl->props.brightness;189 int ret;190 191 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;192 193 ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);194 if (ret < 0)195 return ret;196 197 dsi->mode_flags |= MIPI_DSI_MODE_LPM;198 199 return brightness & 0xff;200}201 202static const struct backlight_ops tm5p5_nt35596_bl_ops = {203 .update_status = tm5p5_nt35596_bl_update_status,204 .get_brightness = tm5p5_nt35596_bl_get_brightness,205};206 207static struct backlight_device *208tm5p5_nt35596_create_backlight(struct mipi_dsi_device *dsi)209{210 struct device *dev = &dsi->dev;211 const struct backlight_properties props = {212 .type = BACKLIGHT_RAW,213 .brightness = 255,214 .max_brightness = 255,215 };216 217 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,218 &tm5p5_nt35596_bl_ops, &props);219}220 221static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi)222{223 struct device *dev = &dsi->dev;224 struct tm5p5_nt35596 *ctx;225 int ret;226 227 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);228 if (!ctx)229 return -ENOMEM;230 231 ctx->supplies[0].supply = "vdd";232 ctx->supplies[1].supply = "vddio";233 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),234 ctx->supplies);235 if (ret < 0) {236 dev_err(dev, "Failed to get regulators: %d\n", ret);237 return ret;238 }239 240 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);241 if (IS_ERR(ctx->reset_gpio)) {242 ret = PTR_ERR(ctx->reset_gpio);243 dev_err(dev, "Failed to get reset-gpios: %d\n", ret);244 return ret;245 }246 247 ctx->dsi = dsi;248 mipi_dsi_set_drvdata(dsi, ctx);249 250 dsi->lanes = 4;251 dsi->format = MIPI_DSI_FMT_RGB888;252 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |253 MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET |254 MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;255 256 drm_panel_init(&ctx->panel, dev, &tm5p5_nt35596_panel_funcs,257 DRM_MODE_CONNECTOR_DSI);258 259 ctx->panel.backlight = tm5p5_nt35596_create_backlight(dsi);260 if (IS_ERR(ctx->panel.backlight)) {261 ret = PTR_ERR(ctx->panel.backlight);262 dev_err(dev, "Failed to create backlight: %d\n", ret);263 return ret;264 }265 266 drm_panel_add(&ctx->panel);267 268 ret = mipi_dsi_attach(dsi);269 if (ret < 0) {270 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);271 return ret;272 }273 274 return 0;275}276 277static void tm5p5_nt35596_remove(struct mipi_dsi_device *dsi)278{279 struct tm5p5_nt35596 *ctx = mipi_dsi_get_drvdata(dsi);280 int ret;281 282 ret = mipi_dsi_detach(dsi);283 if (ret < 0)284 dev_err(&dsi->dev,285 "Failed to detach from DSI host: %d\n", ret);286 287 drm_panel_remove(&ctx->panel);288}289 290static const struct of_device_id tm5p5_nt35596_of_match[] = {291 { .compatible = "asus,z00t-tm5p5-n35596" },292 { /* sentinel */ }293};294MODULE_DEVICE_TABLE(of, tm5p5_nt35596_of_match);295 296static struct mipi_dsi_driver tm5p5_nt35596_driver = {297 .probe = tm5p5_nt35596_probe,298 .remove = tm5p5_nt35596_remove,299 .driver = {300 .name = "panel-tm5p5-nt35596",301 .of_match_table = tm5p5_nt35596_of_match,302 },303};304module_mipi_dsi_driver(tm5p5_nt35596_driver);305 306MODULE_AUTHOR("Konrad Dybcio <konradybcio@gmail.com>");307MODULE_DESCRIPTION("DRM driver for tm5p5 nt35596 1080p video mode dsi panel");308MODULE_LICENSE("GPL v2");309