samsung-sm8650/android_kernel_samsung_sm8650-modules
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Merge "disp: msm: sde: Register display brightness cooling device"

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This commit is contained in:
qctecmdr
2020-07-13 08:57:52 -07:00
committed by Gerrit - the friendly Code Review server
parent 47918b2ba5 53654b534a
commit 06b7a6feeb
2 changed files with 36 additions and 0 deletions
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30
msm/sde/sde_connector.c
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@@ -10,6 +10,7 @@
#include "sde_kms.h" #include "sde_kms.h"
#include "sde_connector.h" #include "sde_connector.h"
#include "sde_encoder.h" #include "sde_encoder.h"
#include "msm_cooling_device.h"
#include <linux/backlight.h> #include <linux/backlight.h>
#include <linux/string.h> #include <linux/string.h>
#include "dsi_drm.h" #include "dsi_drm.h"
@@ -90,6 +91,8 @@ static int sde_backlight_device_update_status(struct backlight_device *bd)
display = (struct dsi_display *) c_conn->display; display = (struct dsi_display *) c_conn->display;
if (brightness > display->panel->bl_config.bl_max_level) if (brightness > display->panel->bl_config.bl_max_level)
brightness = display->panel->bl_config.bl_max_level; brightness = display->panel->bl_config.bl_max_level;
if (brightness > c_conn->thermal_max_brightness)
brightness = c_conn->thermal_max_brightness;
/* map UI brightness into driver backlight level with rounding */ /* map UI brightness into driver backlight level with rounding */
bl_lvl = mult_frac(brightness, display->panel->bl_config.bl_max_level, bl_lvl = mult_frac(brightness, display->panel->bl_config.bl_max_level,
@@ -129,6 +132,20 @@ static const struct backlight_ops sde_backlight_device_ops = {
.get_brightness = sde_backlight_device_get_brightness, .get_brightness = sde_backlight_device_get_brightness,
}; };
static int sde_backlight_cooling_cb(struct notifier_block *nb,
unsigned long val, void *data)
{
struct sde_connector *c_conn;
struct backlight_device *bd = (struct backlight_device *)data;
c_conn = bl_get_data(bd);
SDE_DEBUG("bl: thermal max brightness cap:%lu\n", val);
c_conn->thermal_max_brightness = val;
sde_backlight_device_update_status(bd);
return 0;
}
static int sde_backlight_setup(struct sde_connector *c_conn, static int sde_backlight_setup(struct sde_connector *c_conn,
struct drm_device *dev) struct drm_device *dev)
{ {
@@ -163,6 +180,17 @@ static int sde_backlight_setup(struct sde_connector *c_conn,
c_conn->bl_device = NULL; c_conn->bl_device = NULL;
return -ENODEV; return -ENODEV;
} }
c_conn->thermal_max_brightness = bl_config->brightness_max_level;
c_conn->n.notifier_call = sde_backlight_cooling_cb;
c_conn->cdev = backlight_cdev_register(dev->dev, c_conn->bl_device,
&c_conn->n);
if (IS_ERR_OR_NULL(c_conn->cdev)) {
SDE_ERROR("Failed to register backlight cdev: %ld\n",
PTR_ERR(c_conn->cdev));
backlight_device_unregister(c_conn->bl_device);
c_conn->bl_device = NULL;
return -ENODEV;
}
display_count++; display_count++;
return 0; return 0;
@@ -945,6 +973,8 @@ void sde_connector_destroy(struct drm_connector *connector)
if (c_conn->blob_ext_hdr) if (c_conn->blob_ext_hdr)
drm_property_blob_put(c_conn->blob_ext_hdr); drm_property_blob_put(c_conn->blob_ext_hdr);
if (c_conn->cdev)
backlight_cdev_unregister(c_conn->cdev);
if (c_conn->bl_device) if (c_conn->bl_device)
backlight_device_unregister(c_conn->bl_device); backlight_device_unregister(c_conn->bl_device);
drm_connector_unregister(connector); drm_connector_unregister(connector);

6
msm/sde/sde_connector.h
View File

@@ -425,6 +425,9 @@ struct sde_connector_dyn_hdr_metadata {
* @event_table: Array of registered events * @event_table: Array of registered events
* @event_lock: Lock object for event_table * @event_lock: Lock object for event_table
* @bl_device: backlight device node * @bl_device: backlight device node
* @cdev: backlight cooling device interface
* @n: backlight cooling device notifier
* @thermal_max_brightness: thermal max brightness cap
* @status_work: work object to perform status checks * @status_work: work object to perform status checks
* @esd_status_interval: variable to change ESD check interval in millisec * @esd_status_interval: variable to change ESD check interval in millisec
* @panel_dead: Flag to indicate if panel has gone bad * @panel_dead: Flag to indicate if panel has gone bad
@@ -484,6 +487,9 @@ struct sde_connector {
spinlock_t event_lock; spinlock_t event_lock;
struct backlight_device *bl_device; struct backlight_device *bl_device;
struct sde_cdev *cdev;
struct notifier_block n;
unsigned long thermal_max_brightness;
struct delayed_work status_work; struct delayed_work status_work;
u32 esd_status_interval; u32 esd_status_interval;
bool panel_dead; bool panel_dead;