mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
cf40c66005
This adds support for the TDO TL070WSH30 TFT-LCD panel module. The panel has a 1024×600 resolution and uses 24 bit RGB per pixel. It provides a MIPI DSI interface to the host, a built-in LED backlight and touch controller. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200915121912.4347-5-narmstrong@baylibre.com
251 lines
6.0 KiB
C
251 lines
6.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2020 BayLibre, SAS
|
|
* Author: Neil Armstrong <narmstrong@baylibre.com>
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regulator/consumer.h>
|
|
|
|
#include <video/mipi_display.h>
|
|
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_device.h>
|
|
#include <drm/drm_mipi_dsi.h>
|
|
#include <drm/drm_modes.h>
|
|
#include <drm/drm_panel.h>
|
|
|
|
struct tdo_tl070wsh30_panel {
|
|
struct drm_panel base;
|
|
struct mipi_dsi_device *link;
|
|
|
|
struct regulator *supply;
|
|
struct gpio_desc *reset_gpio;
|
|
|
|
bool prepared;
|
|
};
|
|
|
|
static inline
|
|
struct tdo_tl070wsh30_panel *to_tdo_tl070wsh30_panel(struct drm_panel *panel)
|
|
{
|
|
return container_of(panel, struct tdo_tl070wsh30_panel, base);
|
|
}
|
|
|
|
static int tdo_tl070wsh30_panel_prepare(struct drm_panel *panel)
|
|
{
|
|
struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel);
|
|
int err;
|
|
|
|
if (tdo_tl070wsh30->prepared)
|
|
return 0;
|
|
|
|
err = regulator_enable(tdo_tl070wsh30->supply);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
usleep_range(10000, 11000);
|
|
|
|
gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 1);
|
|
|
|
usleep_range(10000, 11000);
|
|
|
|
gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 0);
|
|
|
|
msleep(200);
|
|
|
|
err = mipi_dsi_dcs_exit_sleep_mode(tdo_tl070wsh30->link);
|
|
if (err < 0) {
|
|
dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
|
|
regulator_disable(tdo_tl070wsh30->supply);
|
|
return err;
|
|
}
|
|
|
|
msleep(200);
|
|
|
|
err = mipi_dsi_dcs_set_display_on(tdo_tl070wsh30->link);
|
|
if (err < 0) {
|
|
dev_err(panel->dev, "failed to set display on: %d\n", err);
|
|
regulator_disable(tdo_tl070wsh30->supply);
|
|
return err;
|
|
}
|
|
|
|
msleep(20);
|
|
|
|
tdo_tl070wsh30->prepared = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tdo_tl070wsh30_panel_unprepare(struct drm_panel *panel)
|
|
{
|
|
struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel);
|
|
int err;
|
|
|
|
if (!tdo_tl070wsh30->prepared)
|
|
return 0;
|
|
|
|
err = mipi_dsi_dcs_set_display_off(tdo_tl070wsh30->link);
|
|
if (err < 0)
|
|
dev_err(panel->dev, "failed to set display off: %d\n", err);
|
|
|
|
usleep_range(10000, 11000);
|
|
|
|
err = mipi_dsi_dcs_enter_sleep_mode(tdo_tl070wsh30->link);
|
|
if (err < 0) {
|
|
dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
usleep_range(10000, 11000);
|
|
|
|
regulator_disable(tdo_tl070wsh30->supply);
|
|
|
|
tdo_tl070wsh30->prepared = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_display_mode default_mode = {
|
|
.clock = 47250,
|
|
.hdisplay = 1024,
|
|
.hsync_start = 1024 + 46,
|
|
.hsync_end = 1024 + 46 + 80,
|
|
.htotal = 1024 + 46 + 80 + 100,
|
|
.vdisplay = 600,
|
|
.vsync_start = 600 + 5,
|
|
.vsync_end = 600 + 5 + 5,
|
|
.vtotal = 600 + 5 + 5 + 20,
|
|
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
|
|
};
|
|
|
|
static int tdo_tl070wsh30_panel_get_modes(struct drm_panel *panel,
|
|
struct drm_connector *connector)
|
|
{
|
|
struct drm_display_mode *mode;
|
|
|
|
mode = drm_mode_duplicate(connector->dev, &default_mode);
|
|
if (!mode) {
|
|
dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
|
|
default_mode.hdisplay, default_mode.vdisplay,
|
|
drm_mode_vrefresh(&default_mode));
|
|
return -ENOMEM;
|
|
}
|
|
|
|
drm_mode_set_name(mode);
|
|
|
|
drm_mode_probed_add(connector, mode);
|
|
|
|
connector->display_info.width_mm = 154;
|
|
connector->display_info.height_mm = 85;
|
|
connector->display_info.bpc = 8;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const struct drm_panel_funcs tdo_tl070wsh30_panel_funcs = {
|
|
.unprepare = tdo_tl070wsh30_panel_unprepare,
|
|
.prepare = tdo_tl070wsh30_panel_prepare,
|
|
.get_modes = tdo_tl070wsh30_panel_get_modes,
|
|
};
|
|
|
|
static const struct of_device_id tdo_tl070wsh30_of_match[] = {
|
|
{ .compatible = "tdo,tl070wsh30", },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tdo_tl070wsh30_of_match);
|
|
|
|
static int tdo_tl070wsh30_panel_add(struct tdo_tl070wsh30_panel *tdo_tl070wsh30)
|
|
{
|
|
struct device *dev = &tdo_tl070wsh30->link->dev;
|
|
int err;
|
|
|
|
tdo_tl070wsh30->supply = devm_regulator_get(dev, "power");
|
|
if (IS_ERR(tdo_tl070wsh30->supply))
|
|
return PTR_ERR(tdo_tl070wsh30->supply);
|
|
|
|
tdo_tl070wsh30->reset_gpio = devm_gpiod_get(dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(tdo_tl070wsh30->reset_gpio)) {
|
|
err = PTR_ERR(tdo_tl070wsh30->reset_gpio);
|
|
dev_dbg(dev, "failed to get reset gpio: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
drm_panel_init(&tdo_tl070wsh30->base, &tdo_tl070wsh30->link->dev,
|
|
&tdo_tl070wsh30_panel_funcs, DRM_MODE_CONNECTOR_DSI);
|
|
|
|
err = drm_panel_of_backlight(&tdo_tl070wsh30->base);
|
|
if (err)
|
|
return err;
|
|
|
|
drm_panel_add(&tdo_tl070wsh30->base);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tdo_tl070wsh30_panel_probe(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct tdo_tl070wsh30_panel *tdo_tl070wsh30;
|
|
int err;
|
|
|
|
dsi->lanes = 4;
|
|
dsi->format = MIPI_DSI_FMT_RGB888;
|
|
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM;
|
|
|
|
tdo_tl070wsh30 = devm_kzalloc(&dsi->dev, sizeof(*tdo_tl070wsh30),
|
|
GFP_KERNEL);
|
|
if (!tdo_tl070wsh30)
|
|
return -ENOMEM;
|
|
|
|
mipi_dsi_set_drvdata(dsi, tdo_tl070wsh30);
|
|
tdo_tl070wsh30->link = dsi;
|
|
|
|
err = tdo_tl070wsh30_panel_add(tdo_tl070wsh30);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return mipi_dsi_attach(dsi);
|
|
}
|
|
|
|
static int tdo_tl070wsh30_panel_remove(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = mipi_dsi_get_drvdata(dsi);
|
|
int err;
|
|
|
|
err = mipi_dsi_detach(dsi);
|
|
if (err < 0)
|
|
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
|
|
|
|
drm_panel_remove(&tdo_tl070wsh30->base);
|
|
drm_panel_disable(&tdo_tl070wsh30->base);
|
|
drm_panel_unprepare(&tdo_tl070wsh30->base);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tdo_tl070wsh30_panel_shutdown(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = mipi_dsi_get_drvdata(dsi);
|
|
|
|
drm_panel_disable(&tdo_tl070wsh30->base);
|
|
drm_panel_unprepare(&tdo_tl070wsh30->base);
|
|
}
|
|
|
|
static struct mipi_dsi_driver tdo_tl070wsh30_panel_driver = {
|
|
.driver = {
|
|
.name = "panel-tdo-tl070wsh30",
|
|
.of_match_table = tdo_tl070wsh30_of_match,
|
|
},
|
|
.probe = tdo_tl070wsh30_panel_probe,
|
|
.remove = tdo_tl070wsh30_panel_remove,
|
|
.shutdown = tdo_tl070wsh30_panel_shutdown,
|
|
};
|
|
module_mipi_dsi_driver(tdo_tl070wsh30_panel_driver);
|
|
|
|
MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
|
|
MODULE_DESCRIPTION("TDO TL070WSH30 panel driver");
|
|
MODULE_LICENSE("GPL v2");
|