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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.4 * Copyright (c) 2024 David Wronek <david@mainlining.org>5 */6 7#include <linux/backlight.h>8#include <linux/delay.h>9#include <linux/gpio/consumer.h>10#include <linux/module.h>11#include <linux/of.h>12#include <linux/of_device.h>13#include <linux/of_graph.h>14#include <linux/regulator/consumer.h>15 16#include <video/mipi_display.h>17 18#include <drm/drm_mipi_dsi.h>19#include <drm/drm_modes.h>20#include <drm/drm_panel.h>21#include <drm/drm_probe_helper.h>22 23struct rm69380_panel {24 struct drm_panel panel;25 struct mipi_dsi_device *dsi[2];26 struct regulator_bulk_data supplies[2];27 struct gpio_desc *reset_gpio;28};29 30static inline31struct rm69380_panel *to_rm69380_panel(struct drm_panel *panel)32{33 return container_of(panel, struct rm69380_panel, panel);34}35 36static void rm69380_reset(struct rm69380_panel *ctx)37{38 gpiod_set_value_cansleep(ctx->reset_gpio, 0);39 usleep_range(15000, 16000);40 gpiod_set_value_cansleep(ctx->reset_gpio, 1);41 usleep_range(10000, 11000);42 gpiod_set_value_cansleep(ctx->reset_gpio, 0);43 msleep(30);44}45 46static int rm69380_on(struct rm69380_panel *ctx)47{48 struct mipi_dsi_device *dsi = ctx->dsi[0];49 struct device *dev = &dsi->dev;50 int ret;51 52 dsi->mode_flags |= MIPI_DSI_MODE_LPM;53 if (ctx->dsi[1])54 ctx->dsi[1]->mode_flags |= MIPI_DSI_MODE_LPM;55 56 mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd4);57 mipi_dsi_dcs_write_seq(dsi, 0x00, 0x80);58 mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd0);59 mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00);60 mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x26);61 mipi_dsi_dcs_write_seq(dsi, 0x75, 0x3f);62 mipi_dsi_dcs_write_seq(dsi, 0x1d, 0x1a);63 mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00);64 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28);65 mipi_dsi_dcs_write_seq(dsi, 0xc2, 0x08);66 67 ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);68 if (ret < 0) {69 dev_err(dev, "Failed to set tear on: %d\n", ret);70 return ret;71 }72 73 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);74 if (ret < 0) {75 dev_err(dev, "Failed to exit sleep mode: %d\n", ret);76 return ret;77 }78 msleep(20);79 80 ret = mipi_dsi_dcs_set_display_on(dsi);81 if (ret < 0) {82 dev_err(dev, "Failed to set display on: %d\n", ret);83 return ret;84 }85 msleep(36);86 87 return 0;88}89 90static int rm69380_off(struct rm69380_panel *ctx)91{92 struct mipi_dsi_device *dsi = ctx->dsi[0];93 struct device *dev = &dsi->dev;94 int ret;95 96 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;97 if (ctx->dsi[1])98 ctx->dsi[1]->mode_flags &= ~MIPI_DSI_MODE_LPM;99 100 ret = mipi_dsi_dcs_set_display_off(dsi);101 if (ret < 0) {102 dev_err(dev, "Failed to set display off: %d\n", ret);103 return ret;104 }105 msleep(35);106 107 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);108 if (ret < 0) {109 dev_err(dev, "Failed to enter sleep mode: %d\n", ret);110 return ret;111 }112 msleep(20);113 114 return 0;115}116 117static int rm69380_prepare(struct drm_panel *panel)118{119 struct rm69380_panel *ctx = to_rm69380_panel(panel);120 struct device *dev = &ctx->dsi[0]->dev;121 int ret;122 123 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);124 if (ret < 0) {125 dev_err(dev, "Failed to enable regulators: %d\n", ret);126 return ret;127 }128 129 rm69380_reset(ctx);130 131 ret = rm69380_on(ctx);132 if (ret < 0) {133 dev_err(dev, "Failed to initialize panel: %d\n", ret);134 gpiod_set_value_cansleep(ctx->reset_gpio, 1);135 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);136 return ret;137 }138 139 return 0;140}141 142static int rm69380_unprepare(struct drm_panel *panel)143{144 struct rm69380_panel *ctx = to_rm69380_panel(panel);145 struct device *dev = &ctx->dsi[0]->dev;146 int ret;147 148 ret = rm69380_off(ctx);149 if (ret < 0)150 dev_err(dev, "Failed to un-initialize panel: %d\n", ret);151 152 gpiod_set_value_cansleep(ctx->reset_gpio, 1);153 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);154 155 return 0;156}157 158static const struct drm_display_mode rm69380_mode = {159 .clock = (2560 + 32 + 12 + 38) * (1600 + 20 + 4 + 8) * 90 / 1000,160 .hdisplay = 2560,161 .hsync_start = 2560 + 32,162 .hsync_end = 2560 + 32 + 12,163 .htotal = 2560 + 32 + 12 + 38,164 .vdisplay = 1600,165 .vsync_start = 1600 + 20,166 .vsync_end = 1600 + 20 + 4,167 .vtotal = 1600 + 20 + 4 + 8,168 .width_mm = 248,169 .height_mm = 155,170 .type = DRM_MODE_TYPE_DRIVER,171};172 173static int rm69380_get_modes(struct drm_panel *panel,174 struct drm_connector *connector)175{176 return drm_connector_helper_get_modes_fixed(connector, &rm69380_mode);177}178 179static const struct drm_panel_funcs rm69380_panel_funcs = {180 .prepare = rm69380_prepare,181 .unprepare = rm69380_unprepare,182 .get_modes = rm69380_get_modes,183};184 185static int rm69380_bl_update_status(struct backlight_device *bl)186{187 struct mipi_dsi_device *dsi = bl_get_data(bl);188 u16 brightness = backlight_get_brightness(bl);189 int ret;190 191 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;192 193 ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);194 if (ret < 0)195 return ret;196 197 dsi->mode_flags |= MIPI_DSI_MODE_LPM;198 199 return 0;200}201 202static int rm69380_bl_get_brightness(struct backlight_device *bl)203{204 struct mipi_dsi_device *dsi = bl_get_data(bl);205 u16 brightness;206 int ret;207 208 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;209 210 ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness);211 if (ret < 0)212 return ret;213 214 dsi->mode_flags |= MIPI_DSI_MODE_LPM;215 216 return brightness;217}218 219static const struct backlight_ops rm69380_bl_ops = {220 .update_status = rm69380_bl_update_status,221 .get_brightness = rm69380_bl_get_brightness,222};223 224static struct backlight_device *225rm69380_create_backlight(struct mipi_dsi_device *dsi)226{227 struct device *dev = &dsi->dev;228 const struct backlight_properties props = {229 .type = BACKLIGHT_RAW,230 .brightness = 511,231 .max_brightness = 2047,232 };233 234 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,235 &rm69380_bl_ops, &props);236}237 238static int rm69380_probe(struct mipi_dsi_device *dsi)239{240 struct mipi_dsi_host *dsi_sec_host;241 struct rm69380_panel *ctx;242 struct device *dev = &dsi->dev;243 struct device_node *dsi_sec;244 int ret, i;245 246 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);247 if (!ctx)248 return -ENOMEM;249 250 ctx->supplies[0].supply = "vddio";251 ctx->supplies[1].supply = "avdd";252 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),253 ctx->supplies);254 if (ret < 0)255 return dev_err_probe(dev, ret, "Failed to get regulators\n");256 257 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);258 if (IS_ERR(ctx->reset_gpio))259 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),260 "Failed to get reset-gpios\n");261 262 dsi_sec = of_graph_get_remote_node(dsi->dev.of_node, 1, -1);263 264 if (dsi_sec) {265 const struct mipi_dsi_device_info info = { "RM69380 DSI1", 0,266 dsi_sec };267 268 dsi_sec_host = of_find_mipi_dsi_host_by_node(dsi_sec);269 of_node_put(dsi_sec);270 if (!dsi_sec_host)271 return dev_err_probe(dev, -EPROBE_DEFER,272 "Cannot get secondary DSI host\n");273 274 ctx->dsi[1] =275 devm_mipi_dsi_device_register_full(dev, dsi_sec_host, &info);276 if (IS_ERR(ctx->dsi[1]))277 return dev_err_probe(dev, PTR_ERR(ctx->dsi[1]),278 "Cannot get secondary DSI node\n");279 280 mipi_dsi_set_drvdata(ctx->dsi[1], ctx);281 }282 283 ctx->dsi[0] = dsi;284 mipi_dsi_set_drvdata(dsi, ctx);285 286 drm_panel_init(&ctx->panel, dev, &rm69380_panel_funcs,287 DRM_MODE_CONNECTOR_DSI);288 ctx->panel.prepare_prev_first = true;289 290 ctx->panel.backlight = rm69380_create_backlight(dsi);291 if (IS_ERR(ctx->panel.backlight))292 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),293 "Failed to create backlight\n");294 295 drm_panel_add(&ctx->panel);296 297 for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {298 if (!ctx->dsi[i])299 continue;300 301 dev_dbg(&ctx->dsi[i]->dev, "Binding DSI %d\n", i);302 303 ctx->dsi[i]->lanes = 4;304 ctx->dsi[i]->format = MIPI_DSI_FMT_RGB888;305 ctx->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |306 MIPI_DSI_CLOCK_NON_CONTINUOUS;307 308 ret = devm_mipi_dsi_attach(dev, ctx->dsi[i]);309 if (ret < 0) {310 drm_panel_remove(&ctx->panel);311 return dev_err_probe(dev, ret,312 "Failed to attach to DSI%d\n", i);313 }314 }315 316 return 0;317}318 319static void rm69380_remove(struct mipi_dsi_device *dsi)320{321 struct rm69380_panel *ctx = mipi_dsi_get_drvdata(dsi);322 323 drm_panel_remove(&ctx->panel);324}325 326static const struct of_device_id rm69380_of_match[] = {327 { .compatible = "lenovo,j716f-edo-rm69380" },328 { /* sentinel */ }329};330MODULE_DEVICE_TABLE(of, rm69380_of_match);331 332static struct mipi_dsi_driver rm69380_panel_driver = {333 .probe = rm69380_probe,334 .remove = rm69380_remove,335 .driver = {336 .name = "panel-raydium-rm69380",337 .of_match_table = rm69380_of_match,338 },339};340module_mipi_dsi_driver(rm69380_panel_driver);341 342MODULE_AUTHOR("David Wronek <david@mainlining.org");343MODULE_DESCRIPTION("DRM driver for Raydium RM69380-equipped DSI panels");344MODULE_LICENSE("GPL");345