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437c3d8759
This adds support for the JDI R63452 Full HD LCD panel used on the Xiaomi Mi 5 smartphone, in MIPI DSI command mode. Signed-off-by: Raffaele Tranquillini <raffaele.tranquillini@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210925102911.518038-1-raffaele.tranquillini@gmail.com
324 lines
8.0 KiB
C
324 lines
8.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2021 Raffaele Tranquillini <raffaele.tranquillini@gmail.com>
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*
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* Generated using linux-mdss-dsi-panel-driver-generator from Lineage OS device tree:
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* https://github.com/LineageOS/android_kernel_xiaomi_msm8996/blob/lineage-18.1/arch/arm/boot/dts/qcom/a1-msm8996-mtp.dtsi
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*/
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <video/mipi_display.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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struct jdi_fhd_r63452 {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct gpio_desc *reset_gpio;
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bool prepared;
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};
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static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)
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{
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return container_of(panel, struct jdi_fhd_r63452, panel);
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}
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#define dsi_generic_write_seq(dsi, seq...) do { \
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static const u8 d[] = { seq }; \
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int ret; \
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ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
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if (ret < 0) \
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return ret; \
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} while (0)
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#define dsi_dcs_write_seq(dsi, seq...) do { \
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static const u8 d[] = { seq }; \
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int ret; \
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ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
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if (ret < 0) \
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return ret; \
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} while (0)
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static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(1000, 2000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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}
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static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct device *dev = &dsi->dev;
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int ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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dsi_generic_write_seq(dsi, 0xb0, 0x00);
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dsi_generic_write_seq(dsi, 0xd6, 0x01);
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dsi_generic_write_seq(dsi, 0xec,
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0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
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0x13, 0x15, 0x68, 0x0b, 0xb5);
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dsi_generic_write_seq(dsi, 0xb0, 0x03);
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ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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if (ret < 0) {
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dev_err(dev, "Failed to set tear on: %d\n", ret);
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return ret;
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}
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dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
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ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
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if (ret < 0) {
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dev_err(dev, "Failed to set pixel format: %d\n", ret);
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return ret;
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}
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ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
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if (ret < 0) {
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dev_err(dev, "Failed to set column address: %d\n", ret);
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return ret;
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}
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ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f);
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if (ret < 0) {
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dev_err(dev, "Failed to set page address: %d\n", ret);
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return ret;
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}
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ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
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if (ret < 0) {
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dev_err(dev, "Failed to set tear scanline: %d\n", ret);
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return ret;
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}
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ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
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if (ret < 0) {
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dev_err(dev, "Failed to set display brightness: %d\n", ret);
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return ret;
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}
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dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
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dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
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dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
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dsi_dcs_write_seq(dsi, 0x84, 0x00);
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to set display on: %d\n", ret);
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return ret;
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}
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msleep(20);
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
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return ret;
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}
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msleep(80);
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dsi_generic_write_seq(dsi, 0xb0, 0x04);
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dsi_dcs_write_seq(dsi, 0x84, 0x00);
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dsi_generic_write_seq(dsi, 0xc8, 0x11);
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dsi_generic_write_seq(dsi, 0xb0, 0x03);
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return 0;
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}
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static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct device *dev = &dsi->dev;
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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dsi_generic_write_seq(dsi, 0xb0, 0x00);
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dsi_generic_write_seq(dsi, 0xd6, 0x01);
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dsi_generic_write_seq(dsi, 0xec,
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0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
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0x13, 0x15, 0x68, 0x0b, 0x95);
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dsi_generic_write_seq(dsi, 0xb0, 0x03);
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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to set display off: %d\n", ret);
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return ret;
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}
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usleep_range(2000, 3000);
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
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return ret;
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}
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msleep(120);
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return 0;
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}
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static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
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{
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struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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if (ctx->prepared)
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return 0;
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jdi_fhd_r63452_reset(ctx);
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ret = jdi_fhd_r63452_on(ctx);
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if (ret < 0) {
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dev_err(dev, "Failed to initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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return ret;
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}
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ctx->prepared = true;
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return 0;
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}
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static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
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{
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struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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if (!ctx->prepared)
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return 0;
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ret = jdi_fhd_r63452_off(ctx);
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if (ret < 0)
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dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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ctx->prepared = false;
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return 0;
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}
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static const struct drm_display_mode jdi_fhd_r63452_mode = {
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.clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 120,
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.hsync_end = 1080 + 120 + 16,
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.htotal = 1080 + 120 + 16 + 40,
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.vdisplay = 1920,
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.vsync_start = 1920 + 4,
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.vsync_end = 1920 + 4 + 2,
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.vtotal = 1920 + 4 + 2 + 4,
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.width_mm = 64,
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.height_mm = 114,
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};
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static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode);
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if (!mode)
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return -ENOMEM;
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drm_mode_set_name(mode);
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mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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connector->display_info.width_mm = mode->width_mm;
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connector->display_info.height_mm = mode->height_mm;
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drm_mode_probed_add(connector, mode);
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return 1;
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}
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static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {
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.prepare = jdi_fhd_r63452_prepare,
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.unprepare = jdi_fhd_r63452_unprepare,
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.get_modes = jdi_fhd_r63452_get_modes,
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};
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static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct jdi_fhd_r63452 *ctx;
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int ret;
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ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
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if (IS_ERR(ctx->reset_gpio))
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return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
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"Failed to get reset-gpios\n");
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ctx->dsi = dsi;
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mipi_dsi_set_drvdata(dsi, ctx);
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dsi->lanes = 4;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
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MIPI_DSI_CLOCK_NON_CONTINUOUS;
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drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ret = drm_panel_of_backlight(&ctx->panel);
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if (ret)
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return dev_err_probe(dev, ret, "Failed to get backlight\n");
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drm_panel_add(&ctx->panel);
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ret = mipi_dsi_attach(dsi);
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if (ret < 0) {
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dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi)
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{
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struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = mipi_dsi_detach(dsi);
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if (ret < 0)
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dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
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drm_panel_remove(&ctx->panel);
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return 0;
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}
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static const struct of_device_id jdi_fhd_r63452_of_match[] = {
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{ .compatible = "jdi,fhd-r63452" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match);
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static struct mipi_dsi_driver jdi_fhd_r63452_driver = {
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.probe = jdi_fhd_r63452_probe,
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.remove = jdi_fhd_r63452_remove,
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.driver = {
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.name = "panel-jdi-fhd-r63452",
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.of_match_table = jdi_fhd_r63452_of_match,
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},
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};
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module_mipi_dsi_driver(jdi_fhd_r63452_driver);
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MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>");
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MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode");
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MODULE_LICENSE("GPL v2");
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