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drm/panel Add support for Focaltech FT8716u panel
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@ElectrodeYT @reocat
ElectrodeYT authored and reocat committed Jan 12, 2024
1 parent 10af948 commit 05e7953
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10 changes: 10 additions & 0 deletions drivers/gpu/drm/panel/Kconfig
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Expand Up @@ -31,12 +31,22 @@ config DRM_PANEL_LG_LG4573
Say Y here if you want to enable support for LG4573 RGB panel.
To compile this driver as a module, choose M here.


config DRM_PANEL_SAMSUNG_S6E8AA0
tristate "Samsung S6E8AA0 DSI video mode panel"
depends on OF
select DRM_MIPI_DSI
select VIDEOMODE_HELPERS

config DRM_PANEL_FT8716U
tristate "FT8716U 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 FT8716U controller
for 1080x1920 LCD panels. Found on some (most?) Nokia PL2 (6.1) phones.

config DRM_PANEL_SHARP_LQ101R1SX01
tristate "Sharp LQ101R1SX01 panel"
depends on OF
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1 change: 1 addition & 0 deletions drivers/gpu/drm/panel/Makefile
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Expand Up @@ -2,4 +2,5 @@ obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
obj-$(CONFIG_DRM_PANEL_FT8716U) += panel-ft8716u.o
obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
285 changes: 285 additions & 0 deletions drivers/gpu/drm/panel/panel-ft8716u.c
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@@ -0,0 +1,285 @@
// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2023 FIXME
// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
// Copyright (c) 2013, The Linux Foundation. All rights reserved. (FIXME)

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>

#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>

struct ft8716u {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct gpio_desc *reset_gpio;
bool prepared;
};

static inline struct ft8716u *to_ft8716u(struct drm_panel *panel)
{
return container_of(panel, struct ft8716u, panel);
}

#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 ft8716u_reset(struct ft8716u *ctx)
{
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(2000, 3000);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(5000, 6000);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 11000);
}

static int ft8716u_on(struct ft8716u *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct device *dev = &dsi->dev;
int ret;

dsi->mode_flags |= MIPI_DSI_MODE_LPM;

dsi_dcs_write_seq(dsi, 0x00, 0x00);
dsi_dcs_write_seq(dsi, 0xff, 0x87, 0x16, 0x01);
dsi_dcs_write_seq(dsi, 0x00, 0x80);
dsi_dcs_write_seq(dsi, 0xff, 0x87, 0x16);
dsi_dcs_write_seq(dsi, 0x00, 0x81);
dsi_dcs_write_seq(dsi, 0xf3, 0xe8);
dsi_dcs_write_seq(dsi, 0x00, 0x82);
dsi_dcs_write_seq(dsi, 0xf3, 0x85);
dsi_dcs_write_seq(dsi, 0x00, 0x83);
dsi_dcs_write_seq(dsi, 0xf3, 0xc0);
dsi_dcs_write_seq(dsi, 0x00, 0x84);
dsi_dcs_write_seq(dsi, 0xf3, 0xe8);
dsi_dcs_write_seq(dsi, 0x00, 0x85);
dsi_dcs_write_seq(dsi, 0xf3, 0x85);
dsi_dcs_write_seq(dsi, 0x00, 0x86);
dsi_dcs_write_seq(dsi, 0xf3, 0xc0);
dsi_dcs_write_seq(dsi, 0x00, 0x87);
dsi_dcs_write_seq(dsi, 0xf3, 0x00);
dsi_dcs_write_seq(dsi, 0x00, 0x88);
dsi_dcs_write_seq(dsi, 0xf3, 0x70);
dsi_dcs_write_seq(dsi, 0x00, 0x89);
dsi_dcs_write_seq(dsi, 0xf3, 0x00);
dsi_dcs_write_seq(dsi, 0x00, 0x8a);
dsi_dcs_write_seq(dsi, 0xf3, 0x00);
dsi_dcs_write_seq(dsi, 0x00, 0x8b);
dsi_dcs_write_seq(dsi, 0xf3, 0x70);
dsi_dcs_write_seq(dsi, 0x00, 0x8c);
dsi_dcs_write_seq(dsi, 0xf3, 0x00);
dsi_dcs_write_seq(dsi, 0x00, 0x98);
dsi_dcs_write_seq(dsi, 0xc5, 0x33);
dsi_dcs_write_seq(dsi, 0x00, 0x00);
dsi_dcs_write_seq(dsi, 0xff, 0x00, 0x00, 0x00);
dsi_dcs_write_seq(dsi, 0x00, 0x80);
dsi_dcs_write_seq(dsi, 0xff, 0x00, 0x00);
usleep_range(5000, 6000);

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(120);

ret = mipi_dsi_dcs_set_display_on(dsi);
if (ret < 0) {
dev_err(dev, "Failed to set display on: %d\n", ret);
return ret;
}

dsi_dcs_write_seq(dsi, 0x35);
usleep_range(10000, 11000);

return 0;
}

static int ft8716u_off(struct ft8716u *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct device *dev = &dsi->dev;
int ret;

dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

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(10000, 11000);

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 ft8716u_prepare(struct drm_panel *panel)
{
struct ft8716u *ctx = to_ft8716u(panel);
struct device *dev = &ctx->dsi->dev;
int ret;

if (ctx->prepared)
return 0;

ft8716u_reset(ctx);

ret = ft8716u_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 ft8716u_unprepare(struct drm_panel *panel)
{
struct ft8716u *ctx = to_ft8716u(panel);
struct device *dev = &ctx->dsi->dev;
int ret;

if (!ctx->prepared)
return 0;

ret = ft8716u_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 ft8716u_mode = {
.clock = (1080 + 106 + 4 + 106) * (1920 + 16 + 2 + 16) * 60 / 1000,
.hdisplay = 1080,
.hsync_start = 1080 + 106,
.hsync_end = 1080 + 106 + 4,
.htotal = 1080 + 106 + 4 + 106,
.vdisplay = 1920,
.vsync_start = 1920 + 16,
.vsync_end = 1920 + 16 + 2,
.vtotal = 1920 + 16 + 2 + 16,
.width_mm = 68,
.height_mm = 120,
};

static int ft8716u_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;

mode = drm_mode_duplicate(connector->dev, &ft8716u_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 ft8716u_panel_funcs = {
.prepare = ft8716u_prepare,
.unprepare = ft8716u_unprepare,
.get_modes = ft8716u_get_modes,
};

static int ft8716u_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct ft8716u *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 | MIPI_DSI_MODE_NO_EOT_PACKET |
MIPI_DSI_CLOCK_NON_CONTINUOUS;

drm_panel_init(&ctx->panel, dev, &ft8716u_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);
drm_panel_remove(&ctx->panel);
return ret;
}

return 0;
}

static void ft8716u_remove(struct mipi_dsi_device *dsi)
{
struct ft8716u *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);
}

static const struct of_device_id ft8716u_of_match[] = {
{ .compatible = "focaltech,ft8716u" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, ft8716u_of_match);

static struct mipi_dsi_driver ft8716u_driver = {
.probe = ft8716u_probe,
.remove = ft8716u_remove,
.driver = {
.name = "panel-ft8716u",
.of_match_table = ft8716u_of_match,
},
};
module_mipi_dsi_driver(ft8716u_driver);

MODULE_AUTHOR("Alexander Richards <[email protected]>");
MODULE_DESCRIPTION("DRM driver for the FT8716u panel");
MODULE_LICENSE("GPL");

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