brintos

brintos / linux-shallow public Read only

0
0
Text · 7.0 KiB · 4eb71e8 Raw
245 lines · c
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