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drm/panel: Add JDI R63452 MIPI DSI panel driver 

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
This commit is contained in:
Raffaele Tranquillini 2021-09-25 12:29:09 +02:00 committed by Sam Ravnborg
parent b7d4ce477e
commit 437c3d8759
3 changed files with 333 additions and 0 deletions
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9
drivers/gpu/drm/panel/Kconfig
View File

@ -189,6 +189,15 @@ config DRM_PANEL_JDI_LT070ME05000
The panel has a 1200(RGB)×1920 (WUXGA) resolution and uses
24 bit per pixel.
config DRM_PANEL_JDI_R63452
tristate "JDI R63452 Full HD DSI panel"
depends on OF
depends on DRM_MIPI_DSI
depends on BACKLIGHT_CLASS_DEVICE
help
Say Y here if you want to enable support for the JDI R63452
DSI command mode panel as found in Xiaomi Mi 5 Devices.
config DRM_PANEL_KHADAS_TS050
tristate "Khadas TS050 panel"
depends on OF

1
drivers/gpu/drm/panel/Makefile
View File

@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o
obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o
obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
obj-$(CONFIG_DRM_PANEL_JDI_R63452) += panel-jdi-fhd-r63452.o
obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o
obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o
obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK050H3146W) += panel-leadtek-ltk050h3146w.o

323
drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c Normal file
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@ -0,0 +1,323 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2021 Raffaele Tranquillini <raffaele.tranquillini@gmail.com>
*
* Generated using linux-mdss-dsi-panel-driver-generator from Lineage OS device tree:
* https://github.com/LineageOS/android_kernel_xiaomi_msm8996/blob/lineage-18.1/arch/arm/boot/dts/qcom/a1-msm8996-mtp.dtsi
*/
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <video/mipi_display.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
struct jdi_fhd_r63452 {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct gpio_desc *reset_gpio;
bool prepared;
};
static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)
{
return container_of(panel, struct jdi_fhd_r63452, panel);
}
#define dsi_generic_write_seq(dsi, seq...) do { \
static const u8 d[] = { seq }; \
int ret; \
ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \
if (ret < 0) \
return ret; \
} while (0)
#define dsi_dcs_write_seq(dsi, seq...) do { \
static const u8 d[] = { seq }; \
int ret; \
ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
if (ret < 0) \
return ret; \
} while (0)
static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
{
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 11000);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(1000, 2000);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 11000);
}
static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct device *dev = &dsi->dev;
int ret;
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
dsi_generic_write_seq(dsi, 0xb0, 0x00);
dsi_generic_write_seq(dsi, 0xd6, 0x01);
dsi_generic_write_seq(dsi, 0xec,
0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
0x13, 0x15, 0x68, 0x0b, 0xb5);
dsi_generic_write_seq(dsi, 0xb0, 0x03);
ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
if (ret < 0) {
dev_err(dev, "Failed to set tear on: %d\n", ret);
return ret;
}
dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
if (ret < 0) {
dev_err(dev, "Failed to set pixel format: %d\n", ret);
return ret;
}
ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
if (ret < 0) {
dev_err(dev, "Failed to set column address: %d\n", ret);
return ret;
}
ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f);
if (ret < 0) {
dev_err(dev, "Failed to set page address: %d\n", ret);
return ret;
}
ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
if (ret < 0) {
dev_err(dev, "Failed to set tear scanline: %d\n", ret);
return ret;
}
ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
if (ret < 0) {
dev_err(dev, "Failed to set display brightness: %d\n", ret);
return ret;
}
dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
dsi_dcs_write_seq(dsi, 0x84, 0x00);
ret = mipi_dsi_dcs_set_display_on(dsi);
if (ret < 0) {
dev_err(dev, "Failed to set display on: %d\n", ret);
return ret;
}
msleep(20);
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
if (ret < 0) {
dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
return ret;
}
msleep(80);
dsi_generic_write_seq(dsi, 0xb0, 0x04);
dsi_dcs_write_seq(dsi, 0x84, 0x00);
dsi_generic_write_seq(dsi, 0xc8, 0x11);
dsi_generic_write_seq(dsi, 0xb0, 0x03);
return 0;
}
static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct device *dev = &dsi->dev;
int ret;
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
dsi_generic_write_seq(dsi, 0xb0, 0x00);
dsi_generic_write_seq(dsi, 0xd6, 0x01);
dsi_generic_write_seq(dsi, 0xec,
0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
0x13, 0x15, 0x68, 0x0b, 0x95);
dsi_generic_write_seq(dsi, 0xb0, 0x03);
ret = mipi_dsi_dcs_set_display_off(dsi);
if (ret < 0) {
dev_err(dev, "Failed to set display off: %d\n", ret);
return ret;
}
usleep_range(2000, 3000);
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ret < 0) {
dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
return ret;
}
msleep(120);
return 0;
}
static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
{
struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
struct device *dev = &ctx->dsi->dev;
int ret;
if (ctx->prepared)
return 0;
jdi_fhd_r63452_reset(ctx);
ret = jdi_fhd_r63452_on(ctx);
if (ret < 0) {
dev_err(dev, "Failed to initialize panel: %d\n", ret);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
return ret;
}
ctx->prepared = true;
return 0;
}
static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
{
struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
struct device *dev = &ctx->dsi->dev;
int ret;
if (!ctx->prepared)
return 0;
ret = jdi_fhd_r63452_off(ctx);
if (ret < 0)
dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
ctx->prepared = false;
return 0;
}
static const struct drm_display_mode jdi_fhd_r63452_mode = {
.clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000,
.hdisplay = 1080,
.hsync_start = 1080 + 120,
.hsync_end = 1080 + 120 + 16,
.htotal = 1080 + 120 + 16 + 40,
.vdisplay = 1920,
.vsync_start = 1920 + 4,
.vsync_end = 1920 + 4 + 2,
.vtotal = 1920 + 4 + 2 + 4,
.width_mm = 64,
.height_mm = 114,
};
static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode);
if (!mode)
return -ENOMEM;
drm_mode_set_name(mode);
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
connector->display_info.width_mm = mode->width_mm;
connector->display_info.height_mm = mode->height_mm;
drm_mode_probed_add(connector, mode);
return 1;
}
static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {
.prepare = jdi_fhd_r63452_prepare,
.unprepare = jdi_fhd_r63452_unprepare,
.get_modes = jdi_fhd_r63452_get_modes,
};
static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct jdi_fhd_r63452 *ctx;
int ret;
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio))
return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
"Failed to get reset-gpios\n");
ctx->dsi = dsi;
mipi_dsi_set_drvdata(dsi, ctx);
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_CLOCK_NON_CONTINUOUS;
drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_of_backlight(&ctx->panel);
if (ret)
return dev_err_probe(dev, ret, "Failed to get backlight\n");
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
return ret;
}
return 0;
}
static int jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi)
{
struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi);
int ret;
ret = mipi_dsi_detach(dsi);
if (ret < 0)
dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
drm_panel_remove(&ctx->panel);
return 0;
}
static const struct of_device_id jdi_fhd_r63452_of_match[] = {
{ .compatible = "jdi,fhd-r63452" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match);
static struct mipi_dsi_driver jdi_fhd_r63452_driver = {
.probe = jdi_fhd_r63452_probe,
.remove = jdi_fhd_r63452_remove,
.driver = {
.name = "panel-jdi-fhd-r63452",
.of_match_table = jdi_fhd_r63452_of_match,
},
};
module_mipi_dsi_driver(jdi_fhd_r63452_driver);
MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>");
MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode");
MODULE_LICENSE("GPL v2");