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1// SPDX-License-Identifier: GPL-2.0-only2// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:3// Copyright (c) 2013, The Linux Foundation. All rights reserved.4// Copyright (c) 2024, Neil Armstrong <neil.armstrong@linaro.org>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 <drm/drm_mipi_dsi.h>13#include <drm/drm_modes.h>14#include <drm/drm_panel.h>15#include <drm/drm_probe_helper.h>16 17struct boe_tv101wum_ll2 {18 struct drm_panel panel;19 struct mipi_dsi_device *dsi;20 struct gpio_desc *reset_gpio;21 struct regulator_bulk_data *supplies;22};23 24static const struct regulator_bulk_data boe_tv101wum_ll2_supplies[] = {25 { .supply = "vsp" },26 { .supply = "vsn" },27};28 29static inline struct boe_tv101wum_ll2 *to_boe_tv101wum_ll2(struct drm_panel *panel)30{31 return container_of(panel, struct boe_tv101wum_ll2, panel);32}33 34static void boe_tv101wum_ll2_reset(struct boe_tv101wum_ll2 *ctx)35{36 gpiod_set_value_cansleep(ctx->reset_gpio, 0);37 usleep_range(5000, 6000);38 gpiod_set_value_cansleep(ctx->reset_gpio, 1);39 usleep_range(5000, 6000);40 gpiod_set_value_cansleep(ctx->reset_gpio, 0);41 42 msleep(120);43}44 45static int boe_tv101wum_ll2_on(struct boe_tv101wum_ll2 *ctx)46{47 struct mipi_dsi_device *dsi = ctx->dsi;48 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };49 50 dsi->mode_flags |= MIPI_DSI_MODE_LPM;51 52 mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);53 54 mipi_dsi_msleep(&dsi_ctx, 120);55 56 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0e);57 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0xff, 0x81, 0x68, 0x6c, 0x22,58 0x6d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00);59 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x23);60 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x00, 0x00);61 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x94, 0x2c, 0x00);62 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x19);63 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xa2, 0x38);64 65 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x5a, 0x0c);66 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x80, 0xfd);67 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0x50, 0x00);68 69 mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);70 71 mipi_dsi_msleep(&dsi_ctx, 20);72 73 return dsi_ctx.accum_err;74}75 76static void boe_tv101wum_ll2_off(struct boe_tv101wum_ll2 *ctx)77{78 struct mipi_dsi_device *dsi = ctx->dsi;79 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };80 81 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;82 83 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);84 85 mipi_dsi_msleep(&dsi_ctx, 70);86 87 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);88 89 mipi_dsi_msleep(&dsi_ctx, 20);90 91 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x5a);92 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x05, 0x5a);93 94 mipi_dsi_msleep(&dsi_ctx, 150);95}96 97static int boe_tv101wum_ll2_prepare(struct drm_panel *panel)98{99 struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);100 int ret;101 102 ret = regulator_bulk_enable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),103 ctx->supplies);104 if (ret < 0)105 return ret;106 107 boe_tv101wum_ll2_reset(ctx);108 109 ret = boe_tv101wum_ll2_on(ctx);110 if (ret < 0) {111 gpiod_set_value_cansleep(ctx->reset_gpio, 1);112 regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),113 ctx->supplies);114 return ret;115 }116 117 return 0;118}119 120static int boe_tv101wum_ll2_unprepare(struct drm_panel *panel)121{122 struct boe_tv101wum_ll2 *ctx = to_boe_tv101wum_ll2(panel);123 124 /* Ignore errors on failure, in any case set gpio and disable regulators */125 boe_tv101wum_ll2_off(ctx);126 127 gpiod_set_value_cansleep(ctx->reset_gpio, 1);128 129 regulator_bulk_disable(ARRAY_SIZE(boe_tv101wum_ll2_supplies),130 ctx->supplies);131 132 return 0;133}134 135static const struct drm_display_mode boe_tv101wum_ll2_mode = {136 .clock = (1200 + 27 + 8 + 12) * (1920 + 155 + 8 + 32) * 60 / 1000,137 .hdisplay = 1200,138 .hsync_start = 1200 + 27,139 .hsync_end = 1200 + 27 + 8,140 .htotal = 1200 + 27 + 8 + 12,141 .vdisplay = 1920,142 .vsync_start = 1920 + 155,143 .vsync_end = 1920 + 155 + 8,144 .vtotal = 1920 + 155 + 8 + 32,145 .width_mm = 136,146 .height_mm = 217,147 .type = DRM_MODE_TYPE_DRIVER,148};149 150static int boe_tv101wum_ll2_get_modes(struct drm_panel *panel,151 struct drm_connector *connector)152{153 /* We do not set display_info.bpc since unset value is bpc=8 by default */154 return drm_connector_helper_get_modes_fixed(connector, &boe_tv101wum_ll2_mode);155}156 157static const struct drm_panel_funcs boe_tv101wum_ll2_panel_funcs = {158 .prepare = boe_tv101wum_ll2_prepare,159 .unprepare = boe_tv101wum_ll2_unprepare,160 .get_modes = boe_tv101wum_ll2_get_modes,161};162 163static int boe_tv101wum_ll2_probe(struct mipi_dsi_device *dsi)164{165 struct device *dev = &dsi->dev;166 struct boe_tv101wum_ll2 *ctx;167 int ret;168 169 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);170 if (!ctx)171 return -ENOMEM;172 173 ret = devm_regulator_bulk_get_const(&dsi->dev,174 ARRAY_SIZE(boe_tv101wum_ll2_supplies),175 boe_tv101wum_ll2_supplies,176 &ctx->supplies);177 if (ret < 0)178 return ret;179 180 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);181 if (IS_ERR(ctx->reset_gpio))182 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),183 "Failed to get reset-gpios\n");184 185 ctx->dsi = dsi;186 mipi_dsi_set_drvdata(dsi, ctx);187 188 dsi->lanes = 4;189 dsi->format = MIPI_DSI_FMT_RGB888;190 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |191 MIPI_DSI_MODE_VIDEO_HSE;192 193 drm_panel_init(&ctx->panel, dev, &boe_tv101wum_ll2_panel_funcs,194 DRM_MODE_CONNECTOR_DSI);195 ctx->panel.prepare_prev_first = true;196 197 ret = drm_panel_of_backlight(&ctx->panel);198 if (ret)199 return dev_err_probe(dev, ret, "Failed to get backlight\n");200 201 drm_panel_add(&ctx->panel);202 203 ret = mipi_dsi_attach(dsi);204 if (ret < 0) {205 drm_panel_remove(&ctx->panel);206 return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");207 }208 209 return 0;210}211 212static void boe_tv101wum_ll2_remove(struct mipi_dsi_device *dsi)213{214 struct boe_tv101wum_ll2 *ctx = mipi_dsi_get_drvdata(dsi);215 int ret;216 217 ret = mipi_dsi_detach(dsi);218 if (ret < 0)219 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);220 221 drm_panel_remove(&ctx->panel);222}223 224static const struct of_device_id boe_tv101wum_ll2_of_match[] = {225 { .compatible = "boe,tv101wum-ll2" },226 { /* sentinel */ }227};228MODULE_DEVICE_TABLE(of, boe_tv101wum_ll2_of_match);229 230static struct mipi_dsi_driver boe_tv101wum_ll2_driver = {231 .probe = boe_tv101wum_ll2_probe,232 .remove = boe_tv101wum_ll2_remove,233 .driver = {234 .name = "panel-boe-tv101wum_ll2",235 .of_match_table = boe_tv101wum_ll2_of_match,236 },237};238module_mipi_dsi_driver(boe_tv101wum_ll2_driver);239 240MODULE_DESCRIPTION("DRM driver for BOE TV101WUM-LL2 Panel");241MODULE_LICENSE("GPL");242