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// SPDX-License-Identifier: GPL-2.0+
/*
* Sharp LQ079L1SX01 DSI panel driver
*
* Copyright (c) 2024 Svyatoslav Ryhel <clamor95@gmail.com>
*/
#include <backlight.h>
#include <dm.h>
#include <panel.h>
#include <log.h>
#include <mipi_dsi.h>
#include <linux/delay.h>
#include <asm/gpio.h>
#include <power/regulator.h>
struct sharp_lq079l1sx01_priv {
struct udevice *backlight;
struct udevice *panel_sec;
struct udevice *avdd;
struct udevice *vddio;
struct udevice *vsp;
struct udevice *vsn;
struct gpio_desc reset_gpio;
};
static struct display_timing default_timing = {
.pixelclock.typ = 215000000,
.hactive.typ = 1536,
.hfront_porch.typ = 136,
.hback_porch.typ = 28,
.hsync_len.typ = 28,
.vactive.typ = 2048,
.vfront_porch.typ = 14,
.vback_porch.typ = 8,
.vsync_len.typ = 2,
};
static int dcs_write_one(struct mipi_dsi_device *dsi, u8 cmd, u8 data)
{
return mipi_dsi_dcs_write(dsi, cmd, &data, 1);
}
static int sharp_lq079l1sx01_configure_link(struct udevice *dev)
{
struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
struct mipi_dsi_device *dsi = plat->device;
int ret;
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
if (ret < 0) {
log_debug("%s: failed to exit sleep mode %s: %d\n",
__func__, dev->parent->name, ret);
}
mdelay(120);
ret = dcs_write_one(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0xff);
if (ret < 0) {
log_debug("%s: failed to SET_DISPLAY_BRIGHTNESS %s: %d\n",
__func__, dev->parent->name, ret);
}
ret = dcs_write_one(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x01);
if (ret < 0) {
log_debug("%s: failed to WRITE_POWER_SAVE %s: %d\n",
__func__, dev->parent->name, ret);
}
ret = dcs_write_one(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x2c);
if (ret < 0) {
log_debug("%s: failed to WRITE_CONTROL_DISPLAY %s: %d\n",
__func__, dev->parent->name, ret);
}
ret = mipi_dsi_dcs_set_display_on(dsi);
if (ret < 0) {
log_debug("%s: failed to set panel on %s: %d\n",
__func__, dev->parent->name, ret);
}
return 0;
}
static int sharp_lq079l1sx01_enable_backlight(struct udevice *dev)
{
struct sharp_lq079l1sx01_priv *priv = dev_get_priv(dev);
if (!priv->panel_sec)
return 0;
sharp_lq079l1sx01_configure_link(dev);
sharp_lq079l1sx01_configure_link(priv->panel_sec);
return 0;
}
static int sharp_lq079l1sx01_set_backlight(struct udevice *dev, int percent)
{
struct sharp_lq079l1sx01_priv *priv = dev_get_priv(dev);
int ret;
if (!priv->panel_sec)
return 0;
ret = backlight_enable(priv->backlight);
if (ret)
return ret;
return backlight_set_brightness(priv->backlight, percent);
}
static int sharp_lq079l1sx01_timings(struct udevice *dev,
struct display_timing *timing)
{
memcpy(timing, &default_timing, sizeof(*timing));
return 0;
}
static int sharp_lq079l1sx01_of_to_plat(struct udevice *dev)
{
struct sharp_lq079l1sx01_priv *priv = dev_get_priv(dev);
int ret;
/* If node has no link2 it is secondary panel */
if (!dev_read_bool(dev, "link2"))
return 0;
ret = uclass_get_device_by_phandle(UCLASS_PANEL, dev,
"link2", &priv->panel_sec);
if (ret) {
log_debug("%s: cannot get secondary panel: ret = %d\n",
__func__, ret);
return ret;
}
ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
"backlight", &priv->backlight);
if (ret) {
log_debug("%s: cannot get backlight: ret = %d\n",
__func__, ret);
return ret;
}
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"avdd-supply", &priv->avdd);
if (ret) {
log_debug("%s: cannot get avdd-supply: ret = %d\n",
__func__, ret);
return ret;
}
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"vddio-supply", &priv->vddio);
if (ret) {
log_debug("%s: cannot get vddio-supply: ret = %d\n",
__func__, ret);
return ret;
}
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"vsp-supply", &priv->vsp);
if (ret) {
log_debug("%s: cannot get vsp-supply: ret = %d\n",
__func__, ret);
return ret;
}
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"vsn-supply", &priv->vsn);
if (ret) {
log_debug("%s: cannot get vsn-supply: ret = %d\n",
__func__, ret);
return ret;
}
ret = gpio_request_by_name(dev, "reset-gpios", 0,
&priv->reset_gpio, GPIOD_IS_OUT);
if (ret) {
log_debug("%s: cannot get reser-gpios (%d)\n",
__func__, ret);
return ret;
}
return 0;
}
static int sharp_lq079l1sx01_hw_init(struct udevice *dev)
{
struct sharp_lq079l1sx01_priv *priv = dev_get_priv(dev);
int ret;
if (!priv->panel_sec)
return 0;
ret = regulator_set_enable_if_allowed(priv->vddio, 1);
if (ret) {
log_debug("%s: enabling vddio-supply failed (%d)\n",
__func__, ret);
return ret;
}
ret = regulator_set_enable_if_allowed(priv->avdd, 1);
if (ret) {
log_debug("%s: enabling avdd-supply failed (%d)\n",
__func__, ret);
return ret;
}
mdelay(12);
ret = regulator_set_enable_if_allowed(priv->vsp, 1);
if (ret) {
log_debug("%s: enabling vsp-supply failed (%d)\n",
__func__, ret);
return ret;
}
mdelay(12);
ret = regulator_set_enable_if_allowed(priv->vsn, 1);
if (ret) {
log_debug("%s: enabling vsn-supply failed (%d)\n",
__func__, ret);
return ret;
}
mdelay(24);
ret = dm_gpio_set_value(&priv->reset_gpio, 0);
if (ret) {
log_debug("%s: error disabling reset-gpios (%d)\n",
__func__, ret);
return ret;
}
udelay(3);
ret = dm_gpio_set_value(&priv->reset_gpio, 1);
if (ret) {
log_debug("%s: error enabling reset-gpios (%d)\n",
__func__, ret);
return ret;
}
udelay(3);
ret = dm_gpio_set_value(&priv->reset_gpio, 0);
if (ret) {
log_debug("%s: error disabling reset-gpios (%d)\n",
__func__, ret);
return ret;
}
mdelay(32);
return 0;
}
static int sharp_lq079l1sx01_probe(struct udevice *dev)
{
struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
/* fill characteristics of DSI data link */
plat->lanes = 4;
plat->format = MIPI_DSI_FMT_RGB888;
plat->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM;
return sharp_lq079l1sx01_hw_init(dev);
}
static const struct panel_ops sharp_lq079l1sx01_ops = {
.enable_backlight = sharp_lq079l1sx01_enable_backlight,
.set_backlight = sharp_lq079l1sx01_set_backlight,
.get_display_timing = sharp_lq079l1sx01_timings,
};
static const struct udevice_id sharp_lq079l1sx01_ids[] = {
{ .compatible = "sharp,lq079l1sx01" },
{ }
};
U_BOOT_DRIVER(sharp_lq079l1sx01) = {
.name = "sharp_lq079l1sx01",
.id = UCLASS_PANEL,
.of_match = sharp_lq079l1sx01_ids,
.ops = &sharp_lq079l1sx01_ops,
.of_to_plat = sharp_lq079l1sx01_of_to_plat,
.probe = sharp_lq079l1sx01_probe,
.plat_auto = sizeof(struct mipi_dsi_panel_plat),
.priv_auto = sizeof(struct sharp_lq079l1sx01_priv),
};
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