mirror of
https://github.com/torvalds/linux.git
synced 2025-10-31 00:28:52 +02:00
6b12afac75
Include <linux/property.h> to declare device_property_read_u32() and <linux/mod_devicetable.h> to declare struct of_device_id. Avoids the dependency on the backlight header to include it. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20250812081118.221103-1-tzimmermann@suse.de
134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
#include <linux/backlight.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/property.h>
|
|
#include <drm/drm_device.h>
|
|
#include <drm/drm_mipi_dsi.h>
|
|
#include <drm/drm_mode.h>
|
|
#include <drm/drm_modes.h>
|
|
#include <drm/drm_panel.h>
|
|
#include <drm/drm_probe_helper.h>
|
|
#include <video/mipi_display.h>
|
|
|
|
struct summit_data {
|
|
struct mipi_dsi_device *dsi;
|
|
struct backlight_device *bl;
|
|
struct drm_panel panel;
|
|
};
|
|
|
|
static int summit_set_brightness(struct device *dev)
|
|
{
|
|
struct summit_data *s_data = dev_get_drvdata(dev);
|
|
int level = backlight_get_brightness(s_data->bl);
|
|
|
|
return mipi_dsi_dcs_set_display_brightness(s_data->dsi, level);
|
|
}
|
|
|
|
static int summit_bl_update_status(struct backlight_device *dev)
|
|
{
|
|
return summit_set_brightness(&dev->dev);
|
|
}
|
|
|
|
static const struct backlight_ops summit_bl_ops = {
|
|
.update_status = summit_bl_update_status,
|
|
};
|
|
|
|
static struct drm_display_mode summit_mode = {
|
|
.vdisplay = 2008,
|
|
.hdisplay = 60,
|
|
.hsync_start = 60 + 8,
|
|
.hsync_end = 60 + 8 + 80,
|
|
.htotal = 60 + 8 + 80 + 40,
|
|
.vsync_start = 2008 + 1,
|
|
.vsync_end = 2008 + 1 + 15,
|
|
.vtotal = 2008 + 1 + 15 + 6,
|
|
.clock = ((60 + 8 + 80 + 40) * (2008 + 1 + 15 + 6) * 60) / 1000,
|
|
.type = DRM_MODE_TYPE_DRIVER,
|
|
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
|
|
};
|
|
|
|
static int summit_get_modes(struct drm_panel *panel,
|
|
struct drm_connector *connector)
|
|
{
|
|
connector->display_info.non_desktop = true;
|
|
drm_object_property_set_value(&connector->base,
|
|
connector->dev->mode_config.non_desktop_property,
|
|
connector->display_info.non_desktop);
|
|
|
|
return drm_connector_helper_get_modes_fixed(connector, &summit_mode);
|
|
}
|
|
|
|
static const struct drm_panel_funcs summit_panel_funcs = {
|
|
.get_modes = summit_get_modes,
|
|
};
|
|
|
|
static int summit_probe(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct backlight_properties props = { 0 };
|
|
struct device *dev = &dsi->dev;
|
|
struct summit_data *s_data;
|
|
int ret;
|
|
|
|
s_data = devm_drm_panel_alloc(dev, struct summit_data, panel,
|
|
&summit_panel_funcs,
|
|
DRM_MODE_CONNECTOR_DSI);
|
|
if (IS_ERR(s_data))
|
|
return PTR_ERR(s_data);
|
|
|
|
mipi_dsi_set_drvdata(dsi, s_data);
|
|
s_data->dsi = dsi;
|
|
|
|
ret = device_property_read_u32(dev, "max-brightness", &props.max_brightness);
|
|
if (ret)
|
|
return ret;
|
|
props.type = BACKLIGHT_RAW;
|
|
|
|
s_data->bl = devm_backlight_device_register(dev, dev_name(dev),
|
|
dev, s_data, &summit_bl_ops, &props);
|
|
if (IS_ERR(s_data->bl))
|
|
return PTR_ERR(s_data->bl);
|
|
|
|
drm_panel_add(&s_data->panel);
|
|
|
|
return mipi_dsi_attach(dsi);
|
|
}
|
|
|
|
static void summit_remove(struct mipi_dsi_device *dsi)
|
|
{
|
|
struct summit_data *s_data = mipi_dsi_get_drvdata(dsi);
|
|
|
|
mipi_dsi_detach(dsi);
|
|
drm_panel_remove(&s_data->panel);
|
|
}
|
|
|
|
static int summit_suspend(struct device *dev)
|
|
{
|
|
struct summit_data *s_data = dev_get_drvdata(dev);
|
|
|
|
return mipi_dsi_dcs_set_display_brightness(s_data->dsi, 0);
|
|
}
|
|
|
|
static DEFINE_SIMPLE_DEV_PM_OPS(summit_pm_ops, summit_suspend,
|
|
summit_set_brightness);
|
|
|
|
static const struct of_device_id summit_of_match[] = {
|
|
{ .compatible = "apple,summit" },
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, summit_of_match);
|
|
|
|
static struct mipi_dsi_driver summit_driver = {
|
|
.probe = summit_probe,
|
|
.remove = summit_remove,
|
|
.driver = {
|
|
.name = "panel-summit",
|
|
.of_match_table = summit_of_match,
|
|
.pm = pm_sleep_ptr(&summit_pm_ops),
|
|
},
|
|
};
|
|
module_mipi_dsi_driver(summit_driver);
|
|
|
|
MODULE_DESCRIPTION("Summit Display Panel Driver");
|
|
MODULE_LICENSE("GPL");
|