341 lines
7.6 KiB
C
341 lines
7.6 KiB
C
/*
|
|
* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#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 innolux_panel {
|
|
struct drm_panel base;
|
|
struct mipi_dsi_device *link;
|
|
|
|
struct backlight_device *backlight;
|
|
struct regulator *supply;
|
|
struct gpio_desc *enable_gpio;
|
|
|
|
bool prepared;
|
|
bool enabled;
|
|
};
|
|
|
|
static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
|
|
{
|
|
return container_of(panel, struct innolux_panel, base);
|
|
}
|
|
|
|
static int innolux_panel_disable(struct drm_panel *panel)
|
|
{
|
|
struct innolux_panel *innolux = to_innolux_panel(panel);
|
|
int err;
|
|
|
|
if (!innolux->enabled)
|
|
return 0;
|
|
|
|
innolux->backlight->props.power = FB_BLANK_POWERDOWN;
|
|
backlight_update_status(innolux->backlight);
|
|
|
|
err = mipi_dsi_dcs_set_display_off(innolux->link);
|
|
if (err < 0)
|
|
DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
|
|
err);
|
|
|
|
innolux->enabled = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int innolux_panel_unprepare(struct drm_panel *panel)
|
|
{
|
|
struct innolux_panel *innolux = to_innolux_panel(panel);
|
|
int err;
|
|
|
|
if (!innolux->prepared)
|
|
return 0;
|
|
|
|
err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
|
|
if (err < 0) {
|
|
DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
|
|
|
|
/* T8: 80ms - 1000ms */
|
|
msleep(80);
|
|
|
|
err = regulator_disable(innolux->supply);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
innolux->prepared = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int innolux_panel_prepare(struct drm_panel *panel)
|
|
{
|
|
struct innolux_panel *innolux = to_innolux_panel(panel);
|
|
int err, regulator_err;
|
|
|
|
if (innolux->prepared)
|
|
return 0;
|
|
|
|
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
|
|
|
|
err = regulator_enable(innolux->supply);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* T2: 15ms - 1000ms */
|
|
usleep_range(15000, 16000);
|
|
|
|
gpiod_set_value_cansleep(innolux->enable_gpio, 1);
|
|
|
|
/* T4: 15ms - 1000ms */
|
|
usleep_range(15000, 16000);
|
|
|
|
err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
|
|
if (err < 0) {
|
|
DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
|
|
err);
|
|
goto poweroff;
|
|
}
|
|
|
|
/* T6: 120ms - 1000ms*/
|
|
msleep(120);
|
|
|
|
err = mipi_dsi_dcs_set_display_on(innolux->link);
|
|
if (err < 0) {
|
|
DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
|
|
err);
|
|
goto poweroff;
|
|
}
|
|
|
|
/* T7: 5ms */
|
|
usleep_range(5000, 6000);
|
|
|
|
innolux->prepared = true;
|
|
|
|
return 0;
|
|
|
|
poweroff:
|
|
regulator_err = regulator_disable(innolux->supply);
|
|
if (regulator_err)
|
|
DRM_DEV_ERROR(panel->dev, "failed to disable regulator: %d\n",
|
|
regulator_err);
|
|
|
|
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
|
|
return err;
|
|
}
|
|
|
|
static int innolux_panel_enable(struct drm_panel *panel)
|
|
{
|
|
struct innolux_panel *innolux = to_innolux_panel(panel);
|
|
int ret;
|
|
|
|
if (innolux->enabled)
|
|
return 0;
|
|
|
|
innolux->backlight->props.power = FB_BLANK_UNBLANK;
|
|
ret = backlight_update_status(innolux->backlight);
|
|
if (ret) {
|
|
DRM_DEV_ERROR(panel->drm->dev,
|
|
"Failed to enable backlight %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
innolux->enabled = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_display_mode default_mode = {
|
|
.clock = 56900,
|
|
.hdisplay = 768,
|
|
.hsync_start = 768 + 40,
|
|
.hsync_end = 768 + 40 + 40,
|
|
.htotal = 768 + 40 + 40 + 40,
|
|
.vdisplay = 1024,
|
|
.vsync_start = 1024 + 20,
|
|
.vsync_end = 1024 + 20 + 4,
|
|
.vtotal = 1024 + 20 + 4 + 20,
|
|
.vrefresh = 60,
|
|
};
|
|
|
|
static int innolux_panel_get_modes(struct drm_panel *panel)
|
|
{
|
|
struct drm_display_mode *mode;
|
|
|
|
mode = drm_mode_duplicate(panel->drm, &default_mode);
|
|
if (!mode) {
|
|
DRM_DEV_ERROR(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 = 120;
|
|
panel->connector->display_info.height_mm = 160;
|
|
panel->connector->display_info.bpc = 8;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const struct drm_panel_funcs innolux_panel_funcs = {
|
|
.disable = innolux_panel_disable,
|
|
.unprepare = innolux_panel_unprepare,
|
|
.prepare = innolux_panel_prepare,
|
|
.enable = innolux_panel_enable,
|
|
.get_modes = innolux_panel_get_modes,
|
|
};
|
|
|
|
static const struct of_device_id innolux_of_match[] = {
|
|
{ .compatible = "innolux,p079zca", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, innolux_of_match);
|
|
|
|
static int innolux_panel_add(struct innolux_panel *innolux)
|
|
{
|
|
struct device *dev = &innolux->link->dev;
|
|
struct device_node *np;
|
|
int err;
|
|
|
|
innolux->supply = devm_regulator_get(dev, "power");
|
|
if (IS_ERR(innolux->supply))
|
|
return PTR_ERR(innolux->supply);
|
|
|
|
innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
|
|
GPIOD_OUT_HIGH);
|
|
if (IS_ERR(innolux->enable_gpio)) {
|
|
err = PTR_ERR(innolux->enable_gpio);
|
|
dev_dbg(dev, "failed to get enable gpio: %d\n", err);
|
|
innolux->enable_gpio = NULL;
|
|
}
|
|
|
|
np = of_parse_phandle(dev->of_node, "backlight", 0);
|
|
if (np) {
|
|
innolux->backlight = of_find_backlight_by_node(np);
|
|
of_node_put(np);
|
|
|
|
if (!innolux->backlight)
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
drm_panel_init(&innolux->base);
|
|
innolux->base.funcs = &innolux_panel_funcs;
|
|
innolux->base.dev = &innolux->link->dev;
|
|
|
|
err = drm_panel_add(&innolux->base);
|
|
if (err < 0)
|
|
goto put_backlight;
|
|
|
|
return 0;
|
|
|
|
put_backlight:
|
|
put_device(&innolux->backlight->dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void innolux_panel_del(struct innolux_panel *innolux)
|
|
{
|
|
if (innolux->base.dev)
|
|
drm_panel_remove(&innolux->base);
|
|
|
|
put_device(&innolux->backlight->dev);
|
|
}
|
|
|
|
static int innolux_panel_probe(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct innolux_panel *innolux;
|
|
int err;
|
|
|
|
dsi->lanes = 4;
|
|
dsi->format = MIPI_DSI_FMT_RGB888;
|
|
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
|
|
MIPI_DSI_MODE_LPM;
|
|
|
|
innolux = devm_kzalloc(&dsi->dev, sizeof(*innolux), GFP_KERNEL);
|
|
if (!innolux)
|
|
return -ENOMEM;
|
|
|
|
mipi_dsi_set_drvdata(dsi, innolux);
|
|
|
|
innolux->link = dsi;
|
|
|
|
err = innolux_panel_add(innolux);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = mipi_dsi_attach(dsi);
|
|
return err;
|
|
}
|
|
|
|
static int innolux_panel_remove(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
|
|
int err;
|
|
|
|
err = innolux_panel_unprepare(&innolux->base);
|
|
if (err < 0)
|
|
DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
|
|
err);
|
|
|
|
err = innolux_panel_disable(&innolux->base);
|
|
if (err < 0)
|
|
DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
|
|
|
|
err = mipi_dsi_detach(dsi);
|
|
if (err < 0)
|
|
DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
|
|
err);
|
|
|
|
drm_panel_detach(&innolux->base);
|
|
innolux_panel_del(innolux);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
|
|
|
|
innolux_panel_unprepare(&innolux->base);
|
|
innolux_panel_disable(&innolux->base);
|
|
}
|
|
|
|
static struct mipi_dsi_driver innolux_panel_driver = {
|
|
.driver = {
|
|
.name = "panel-innolux-p079zca",
|
|
.of_match_table = innolux_of_match,
|
|
},
|
|
.probe = innolux_panel_probe,
|
|
.remove = innolux_panel_remove,
|
|
.shutdown = innolux_panel_shutdown,
|
|
};
|
|
module_mipi_dsi_driver(innolux_panel_driver);
|
|
|
|
MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
|
|
MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
|
|
MODULE_LICENSE("GPL v2");
|