mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
![Werner Johansson](/assets/img/avatar_default.png)
The Sharp LS043T1LE01 is a 4.3", 540x960 TFT-LCD panel connected using two DSI lanes. It is for example found on the Qualcomm Snapdragon 800 Dragonboard (APQ8074). Signed-off-by: Werner Johansson <werner.johansson@sonymobile.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
387 lines
8.6 KiB
C
387 lines
8.6 KiB
C
/*
|
|
* Copyright (C) 2015 Red Hat
|
|
* Copyright (C) 2015 Sony Mobile Communications Inc.
|
|
* Author: Werner Johansson <werner.johansson@sonymobile.com>
|
|
*
|
|
* Based on AUO panel driver by Rob Clark <robdclark@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published by
|
|
* the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/backlight.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regulator/consumer.h>
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_mipi_dsi.h>
|
|
#include <drm/drm_panel.h>
|
|
|
|
#include <video/mipi_display.h>
|
|
|
|
struct sharp_nt_panel {
|
|
struct drm_panel base;
|
|
struct mipi_dsi_device *dsi;
|
|
|
|
struct backlight_device *backlight;
|
|
struct regulator *supply;
|
|
struct gpio_desc *reset_gpio;
|
|
|
|
bool prepared;
|
|
bool enabled;
|
|
|
|
const struct drm_display_mode *mode;
|
|
};
|
|
|
|
static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel)
|
|
{
|
|
return container_of(panel, struct sharp_nt_panel, base);
|
|
}
|
|
|
|
static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt)
|
|
{
|
|
struct mipi_dsi_device *dsi = sharp_nt->dsi;
|
|
int ret;
|
|
|
|
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
|
|
|
|
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
msleep(120);
|
|
|
|
/* Novatek two-lane operation */
|
|
ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Set both MCU and RGB I/F to 24bpp */
|
|
ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT |
|
|
(MIPI_DCS_PIXEL_FMT_24BIT << 4));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt)
|
|
{
|
|
struct mipi_dsi_device *dsi = sharp_nt->dsi;
|
|
int ret;
|
|
|
|
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
|
|
|
|
ret = mipi_dsi_dcs_set_display_on(dsi);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt)
|
|
{
|
|
struct mipi_dsi_device *dsi = sharp_nt->dsi;
|
|
int ret;
|
|
|
|
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
|
|
|
|
ret = mipi_dsi_dcs_set_display_off(dsi);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int sharp_nt_panel_disable(struct drm_panel *panel)
|
|
{
|
|
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
|
|
|
|
if (!sharp_nt->enabled)
|
|
return 0;
|
|
|
|
if (sharp_nt->backlight) {
|
|
sharp_nt->backlight->props.power = FB_BLANK_POWERDOWN;
|
|
backlight_update_status(sharp_nt->backlight);
|
|
}
|
|
|
|
sharp_nt->enabled = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sharp_nt_panel_unprepare(struct drm_panel *panel)
|
|
{
|
|
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
|
|
int ret;
|
|
|
|
if (!sharp_nt->prepared)
|
|
return 0;
|
|
|
|
ret = sharp_nt_panel_off(sharp_nt);
|
|
if (ret < 0) {
|
|
dev_err(panel->dev, "failed to set panel off: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
regulator_disable(sharp_nt->supply);
|
|
if (sharp_nt->reset_gpio)
|
|
gpiod_set_value(sharp_nt->reset_gpio, 0);
|
|
|
|
sharp_nt->prepared = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sharp_nt_panel_prepare(struct drm_panel *panel)
|
|
{
|
|
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
|
|
int ret;
|
|
|
|
if (sharp_nt->prepared)
|
|
return 0;
|
|
|
|
ret = regulator_enable(sharp_nt->supply);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
msleep(20);
|
|
|
|
if (sharp_nt->reset_gpio) {
|
|
gpiod_set_value(sharp_nt->reset_gpio, 1);
|
|
msleep(1);
|
|
gpiod_set_value(sharp_nt->reset_gpio, 0);
|
|
msleep(1);
|
|
gpiod_set_value(sharp_nt->reset_gpio, 1);
|
|
msleep(10);
|
|
}
|
|
|
|
ret = sharp_nt_panel_init(sharp_nt);
|
|
if (ret < 0) {
|
|
dev_err(panel->dev, "failed to init panel: %d\n", ret);
|
|
goto poweroff;
|
|
}
|
|
|
|
ret = sharp_nt_panel_on(sharp_nt);
|
|
if (ret < 0) {
|
|
dev_err(panel->dev, "failed to set panel on: %d\n", ret);
|
|
goto poweroff;
|
|
}
|
|
|
|
sharp_nt->prepared = true;
|
|
|
|
return 0;
|
|
|
|
poweroff:
|
|
regulator_disable(sharp_nt->supply);
|
|
if (sharp_nt->reset_gpio)
|
|
gpiod_set_value(sharp_nt->reset_gpio, 0);
|
|
return ret;
|
|
}
|
|
|
|
static int sharp_nt_panel_enable(struct drm_panel *panel)
|
|
{
|
|
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
|
|
|
|
if (sharp_nt->enabled)
|
|
return 0;
|
|
|
|
if (sharp_nt->backlight) {
|
|
sharp_nt->backlight->props.power = FB_BLANK_UNBLANK;
|
|
backlight_update_status(sharp_nt->backlight);
|
|
}
|
|
|
|
sharp_nt->enabled = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_display_mode default_mode = {
|
|
.clock = 41118,
|
|
.hdisplay = 540,
|
|
.hsync_start = 540 + 48,
|
|
.hsync_end = 540 + 48 + 80,
|
|
.htotal = 540 + 48 + 80 + 32,
|
|
.vdisplay = 960,
|
|
.vsync_start = 960 + 3,
|
|
.vsync_end = 960 + 3 + 15,
|
|
.vtotal = 960 + 3 + 15 + 1,
|
|
.vrefresh = 60,
|
|
};
|
|
|
|
static int sharp_nt_panel_get_modes(struct drm_panel *panel)
|
|
{
|
|
struct drm_display_mode *mode;
|
|
|
|
mode = drm_mode_duplicate(panel->drm, &default_mode);
|
|
if (!mode) {
|
|
dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
|
|
default_mode.hdisplay, default_mode.vdisplay,
|
|
default_mode.vrefresh);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
drm_mode_set_name(mode);
|
|
|
|
drm_mode_probed_add(panel->connector, mode);
|
|
|
|
panel->connector->display_info.width_mm = 54;
|
|
panel->connector->display_info.height_mm = 95;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const struct drm_panel_funcs sharp_nt_panel_funcs = {
|
|
.disable = sharp_nt_panel_disable,
|
|
.unprepare = sharp_nt_panel_unprepare,
|
|
.prepare = sharp_nt_panel_prepare,
|
|
.enable = sharp_nt_panel_enable,
|
|
.get_modes = sharp_nt_panel_get_modes,
|
|
};
|
|
|
|
static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
|
|
{
|
|
struct device *dev = &sharp_nt->dsi->dev;
|
|
struct device_node *np;
|
|
int ret;
|
|
|
|
sharp_nt->mode = &default_mode;
|
|
|
|
sharp_nt->supply = devm_regulator_get(dev, "avdd");
|
|
if (IS_ERR(sharp_nt->supply))
|
|
return PTR_ERR(sharp_nt->supply);
|
|
|
|
sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
|
|
if (IS_ERR(sharp_nt->reset_gpio)) {
|
|
dev_err(dev, "cannot get reset-gpios %ld\n",
|
|
PTR_ERR(sharp_nt->reset_gpio));
|
|
sharp_nt->reset_gpio = NULL;
|
|
} else {
|
|
gpiod_set_value(sharp_nt->reset_gpio, 0);
|
|
}
|
|
|
|
np = of_parse_phandle(dev->of_node, "backlight", 0);
|
|
if (np) {
|
|
sharp_nt->backlight = of_find_backlight_by_node(np);
|
|
of_node_put(np);
|
|
|
|
if (!sharp_nt->backlight)
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
drm_panel_init(&sharp_nt->base);
|
|
sharp_nt->base.funcs = &sharp_nt_panel_funcs;
|
|
sharp_nt->base.dev = &sharp_nt->dsi->dev;
|
|
|
|
ret = drm_panel_add(&sharp_nt->base);
|
|
if (ret < 0)
|
|
goto put_backlight;
|
|
|
|
return 0;
|
|
|
|
put_backlight:
|
|
if (sharp_nt->backlight)
|
|
put_device(&sharp_nt->backlight->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt)
|
|
{
|
|
if (sharp_nt->base.dev)
|
|
drm_panel_remove(&sharp_nt->base);
|
|
|
|
if (sharp_nt->backlight)
|
|
put_device(&sharp_nt->backlight->dev);
|
|
}
|
|
|
|
static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct sharp_nt_panel *sharp_nt;
|
|
int ret;
|
|
|
|
dsi->lanes = 2;
|
|
dsi->format = MIPI_DSI_FMT_RGB888;
|
|
dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
|
|
MIPI_DSI_MODE_VIDEO_HSE |
|
|
MIPI_DSI_CLOCK_NON_CONTINUOUS |
|
|
MIPI_DSI_MODE_EOT_PACKET;
|
|
|
|
sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL);
|
|
if (!sharp_nt)
|
|
return -ENOMEM;
|
|
|
|
mipi_dsi_set_drvdata(dsi, sharp_nt);
|
|
|
|
sharp_nt->dsi = dsi;
|
|
|
|
ret = sharp_nt_panel_add(sharp_nt);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return mipi_dsi_attach(dsi);
|
|
}
|
|
|
|
static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
|
|
int ret;
|
|
|
|
ret = sharp_nt_panel_disable(&sharp_nt->base);
|
|
if (ret < 0)
|
|
dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);
|
|
|
|
ret = mipi_dsi_detach(dsi);
|
|
if (ret < 0)
|
|
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
|
|
|
|
drm_panel_detach(&sharp_nt->base);
|
|
sharp_nt_panel_del(sharp_nt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
|
|
|
|
sharp_nt_panel_disable(&sharp_nt->base);
|
|
}
|
|
|
|
static const struct of_device_id sharp_nt_of_match[] = {
|
|
{ .compatible = "sharp,ls043t1le01-qhd", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, sharp_nt_of_match);
|
|
|
|
static struct mipi_dsi_driver sharp_nt_panel_driver = {
|
|
.driver = {
|
|
.name = "panel-sharp-ls043t1le01-qhd",
|
|
.of_match_table = sharp_nt_of_match,
|
|
},
|
|
.probe = sharp_nt_panel_probe,
|
|
.remove = sharp_nt_panel_remove,
|
|
.shutdown = sharp_nt_panel_shutdown,
|
|
};
|
|
module_mipi_dsi_driver(sharp_nt_panel_driver);
|
|
|
|
MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>");
|
|
MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver");
|
|
MODULE_LICENSE("GPL v2");
|