#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
#include <linux/mfd/wm831x/regulator.h>
-#ifdef CONFIG_HAS_EARLYSUSPEND
-#include <linux/earlysuspend.h>
-#endif
-#include <linux/delay.h>
-#include <linux/ktime.h>
-#define BL_SET 255
-#define BL_MISC_VALUE 20
-#define BL_INIT_VALUE 102
+
struct wm831x_backlight_data {
struct wm831x *wm831x;
int isink_reg;
int current_brightness;
-#ifdef CONFIG_HAS_EARLYSUSPEND
- struct early_suspend early_suspend;
- struct delayed_work work;
- int suspend_flag;
- int shutdown_flag;
-#endif
};
-#define TS_POLL_DELAY (10000*1000*1000)
-int wm831x_bright = 0;
-int max_tp = 0;
-#ifdef CONFIG_HAS_EARLYSUSPEND
-static struct backlight_device *gwm831x_bl;
-static struct wm831x_backlight_data *gwm831x_data;
-#endif
+
static int wm831x_backlight_set(struct backlight_device *bl, int brightness)
{
struct wm831x_backlight_data *data = bl_get_data(bl);
struct wm831x *wm831x = data->wm831x;
-// int power_up = !data->current_brightness && brightness;
-// int power_down = data->current_brightness && !brightness;
- int power_up;
- int power_down;
+ int power_up = !data->current_brightness && brightness;
+ int power_down = data->current_brightness && !brightness;
int ret;
- int bright_tp;
- bright_tp =( max_tp*brightness)/BL_SET;
- power_up =!data->current_brightness && bright_tp;
- power_down = data->current_brightness && !bright_tp;
if (power_up) {
/* Enable the ISINK */
ret = wm831x_set_bits(wm831x, data->isink_reg,
/* Set the new brightness */
ret = wm831x_set_bits(wm831x, data->isink_reg,
- WM831X_CS1_ISEL_MASK, bright_tp);
+ WM831X_CS1_ISEL_MASK, brightness);
if (ret < 0)
goto err;
static int wm831x_backlight_update_status(struct backlight_device *bl)
{
int brightness = bl->props.brightness;
- if (brightness<=BL_MISC_VALUE) {
- brightness = 8*brightness;
- }
- else if (brightness<=BL_INIT_VALUE) {
- brightness = 31*brightness/41 + 145;
- }
- else {
- brightness = 33*brightness/153 + 200;
- }
- if(gwm831x_data->suspend_flag == 1)
- brightness = 0;
- if (gwm831x_data->shutdown_flag == 1)
- brightness = 0;
-
if (bl->props.power != FB_BLANK_UNBLANK)
brightness = 0;
if (bl->props.state & BL_CORE_SUSPENDED)
brightness = 0;
- printk("backlight brightness=%d\n", brightness);
-
return wm831x_backlight_set(bl, brightness);
}
.update_status = wm831x_backlight_update_status,
.get_brightness = wm831x_backlight_get_brightness,
};
-#ifdef CONFIG_HAS_EARLYSUSPEND
-static void wm831x_bl_work(struct work_struct *work)
-{
- //struct wm831x_backlight_data *wm831x_data = container_of(work, struct wm831x_backlight_data,
- //work.work);
- backlight_update_status(gwm831x_bl);
-}
-
-static void wm831x_bl_suspend(struct early_suspend *h)
-{
- struct wm831x_backlight_data *wm831x_data;
- wm831x_data = container_of(h, struct wm831x_backlight_data, early_suspend);
- wm831x_data->suspend_flag = 1;
-
- schedule_delayed_work(&wm831x_data->work, msecs_to_jiffies(100));
-}
-
-
-static void wm831x_bl_resume(struct early_suspend *h)
-{
- struct wm831x_backlight_data *wm831x_data;
- wm831x_data = container_of(h, struct wm831x_backlight_data, early_suspend);
- wm831x_data->suspend_flag = 0;
-
- schedule_delayed_work(&wm831x_data->work, msecs_to_jiffies(100));
-}
-
-#endif
-
-int rk29_backlight_ctrl(int open)
-{
- gwm831x_data->suspend_flag = !open;
- schedule_delayed_work(&gwm831x_data->work, 0);
-}
static int wm831x_backlight_probe(struct platform_device *pdev)
{
return -EINVAL;
}
max_isel = i - 1;
- max_tp = max_isel;
+
if (pdata->max_uA != wm831x_isinkv_values[max_isel])
dev_warn(&pdev->dev,
"Maximum current is %duA not %duA as requested\n",
data->current_brightness = 0;
data->isink_reg = isink_reg;
- props.max_brightness = BL_SET;
+ props.max_brightness = max_isel;
bl = backlight_device_register("wm831x", &pdev->dev, data,
&wm831x_backlight_ops, &props);
if (IS_ERR(bl)) {
return PTR_ERR(bl);
}
- bl->props.brightness = BL_INIT_VALUE;
+ bl->props.brightness = max_isel;
platform_set_drvdata(pdev, bl);
-#ifdef CONFIG_HAS_EARLYSUSPEND
- data->early_suspend.level = ~0x0;
- data->early_suspend.suspend = wm831x_bl_suspend;
- data->early_suspend.resume = wm831x_bl_resume;
- register_early_suspend(&data->early_suspend);
- INIT_DELAYED_WORK(&data->work, wm831x_bl_work);
- gwm831x_bl = bl;
- gwm831x_data = data;
-#endif
-
-
/* Disable the DCDC if it was started so we can bootstrap */
wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE, WM831X_DC4_ENA, 0);
- //backlight_update_status(bl);
- schedule_delayed_work(&data->work, msecs_to_jiffies(100));
+
+ backlight_update_status(bl);
return 0;
}
struct wm831x_backlight_data *data = bl_get_data(bl);
backlight_device_unregister(bl);
-#ifdef CONFIG_HAS_EARLYSUSPEND
- unregister_early_suspend(&data->early_suspend);
-#endif
kfree(data);
return 0;
}
-static void wm831x_backlight_shutdown(struct platform_device *pdev)
-{
- struct backlight_device *bl = platform_get_drvdata(pdev);
- struct wm831x_backlight_data *data = bl_get_data(bl);
-
- printk("enter %s\n", __func__);
- data->shutdown_flag = 1;
- wm831x_backlight_update_status(bl);
- return;
-}
-
static struct platform_driver wm831x_backlight_driver = {
.driver = {
.name = "wm831x-backlight",
},
.probe = wm831x_backlight_probe,
.remove = wm831x_backlight_remove,
- .shutdown = wm831x_backlight_shutdown,
};
static int __init wm831x_backlight_init(void)
projects / firefly-linux-kernel-4.4.55.git / blobdiff