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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2021 Raffaele Tranquillini <raffaele.tranquillini@gmail.com>4 *5 * Generated using linux-mdss-dsi-panel-driver-generator from Lineage OS device tree:6 * https://github.com/LineageOS/android_kernel_xiaomi_msm8996/blob/lineage-18.1/arch/arm/boot/dts/qcom/a1-msm8996-mtp.dtsi7 */8 9#include <linux/delay.h>10#include <linux/gpio/consumer.h>11#include <linux/module.h>12#include <linux/of.h>13 14#include <video/mipi_display.h>15 16#include <drm/drm_mipi_dsi.h>17#include <drm/drm_modes.h>18#include <drm/drm_panel.h>19 20struct jdi_fhd_r63452 {21 struct drm_panel panel;22 struct mipi_dsi_device *dsi;23 struct gpio_desc *reset_gpio;24};25 26static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)27{28 return container_of(panel, struct jdi_fhd_r63452, panel);29}30 31static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)32{33 gpiod_set_value_cansleep(ctx->reset_gpio, 0);34 usleep_range(10000, 11000);35 gpiod_set_value_cansleep(ctx->reset_gpio, 1);36 usleep_range(1000, 2000);37 gpiod_set_value_cansleep(ctx->reset_gpio, 0);38 usleep_range(10000, 11000);39}40 41static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)42{43 struct mipi_dsi_device *dsi = ctx->dsi;44 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };45 46 dsi->mode_flags |= MIPI_DSI_MODE_LPM;47 48 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);49 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);50 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,51 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,52 0x13, 0x15, 0x68, 0x0b, 0xb5);53 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);54 55 mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);56 57 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);58 59 mipi_dsi_dcs_set_pixel_format_multi(&dsi_ctx, 0x77);60 mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x0437);61 mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x077f);62 mipi_dsi_dcs_set_tear_scanline_multi(&dsi_ctx, 0x0000);63 mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00ff);64 65 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);66 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);67 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);68 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);69 70 mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);71 mipi_dsi_msleep(&dsi_ctx, 20);72 mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);73 mipi_dsi_msleep(&dsi_ctx, 80);74 75 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);76 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);77 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xc8, 0x11);78 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);79 80 return dsi_ctx.accum_err;81}82 83static void jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)84{85 struct mipi_dsi_device *dsi = ctx->dsi;86 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };87 88 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;89 90 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);91 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);92 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,93 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,94 0x13, 0x15, 0x68, 0x0b, 0x95);95 mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);96 97 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);98 mipi_dsi_usleep_range(&dsi_ctx, 2000, 3000);99 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);100 mipi_dsi_msleep(&dsi_ctx, 120);101}102 103static int jdi_fhd_r63452_prepare(struct drm_panel *panel)104{105 struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);106 int ret;107 108 jdi_fhd_r63452_reset(ctx);109 110 ret = jdi_fhd_r63452_on(ctx);111 if (ret < 0)112 gpiod_set_value_cansleep(ctx->reset_gpio, 1);113 114 return ret;115}116 117static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)118{119 struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);120 121 /*122 * NOTE: We don't return an error here as while the panel won't have123 * been cleanly turned off at least we've asserted the reset signal124 * so it should be safe to power it back on again later125 */126 jdi_fhd_r63452_off(ctx);127 128 gpiod_set_value_cansleep(ctx->reset_gpio, 1);129 130 return 0;131}132 133static const struct drm_display_mode jdi_fhd_r63452_mode = {134 .clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000,135 .hdisplay = 1080,136 .hsync_start = 1080 + 120,137 .hsync_end = 1080 + 120 + 16,138 .htotal = 1080 + 120 + 16 + 40,139 .vdisplay = 1920,140 .vsync_start = 1920 + 4,141 .vsync_end = 1920 + 4 + 2,142 .vtotal = 1920 + 4 + 2 + 4,143 .width_mm = 64,144 .height_mm = 114,145};146 147static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,148 struct drm_connector *connector)149{150 struct drm_display_mode *mode;151 152 mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode);153 if (!mode)154 return -ENOMEM;155 156 drm_mode_set_name(mode);157 158 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;159 connector->display_info.width_mm = mode->width_mm;160 connector->display_info.height_mm = mode->height_mm;161 drm_mode_probed_add(connector, mode);162 163 return 1;164}165 166static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {167 .prepare = jdi_fhd_r63452_prepare,168 .unprepare = jdi_fhd_r63452_unprepare,169 .get_modes = jdi_fhd_r63452_get_modes,170};171 172static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)173{174 struct device *dev = &dsi->dev;175 struct jdi_fhd_r63452 *ctx;176 int ret;177 178 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);179 if (!ctx)180 return -ENOMEM;181 182 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);183 if (IS_ERR(ctx->reset_gpio))184 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),185 "Failed to get reset-gpios\n");186 187 ctx->dsi = dsi;188 mipi_dsi_set_drvdata(dsi, ctx);189 190 dsi->lanes = 4;191 dsi->format = MIPI_DSI_FMT_RGB888;192 dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |193 MIPI_DSI_CLOCK_NON_CONTINUOUS;194 195 drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,196 DRM_MODE_CONNECTOR_DSI);197 ctx->panel.prepare_prev_first = true;198 199 ret = drm_panel_of_backlight(&ctx->panel);200 if (ret)201 return dev_err_probe(dev, ret, "Failed to get backlight\n");202 203 drm_panel_add(&ctx->panel);204 205 ret = mipi_dsi_attach(dsi);206 if (ret < 0) {207 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);208 return ret;209 }210 211 return 0;212}213 214static void jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi)215{216 struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi);217 int ret;218 219 ret = mipi_dsi_detach(dsi);220 if (ret < 0)221 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);222 223 drm_panel_remove(&ctx->panel);224}225 226static const struct of_device_id jdi_fhd_r63452_of_match[] = {227 { .compatible = "jdi,fhd-r63452" },228 { /* sentinel */ }229};230MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match);231 232static struct mipi_dsi_driver jdi_fhd_r63452_driver = {233 .probe = jdi_fhd_r63452_probe,234 .remove = jdi_fhd_r63452_remove,235 .driver = {236 .name = "panel-jdi-fhd-r63452",237 .of_match_table = jdi_fhd_r63452_of_match,238 },239};240module_mipi_dsi_driver(jdi_fhd_r63452_driver);241 242MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>");243MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode");244MODULE_LICENSE("GPL v2");245