- New Device Support

- None
  - New Functionality
    - None
  - Core Frameworks
    - Reject legacy PWM request for device defined in DT
  - Fix-ups
    - Remove unnecessary MODULE_ALIAS(); adp8860_bl, adp8870_bl
    - Simplify code: pm8941-wled
    - Supply default-brightness logic; pm8941-wled
  - Bug Fixes
    - Clean up OF node; 88pm860x_bl
    - Ensure struct is zeroed; lp855x_bl
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWOzLmAAoJEFGvii+H/Hdhrd8P/3HB4ueeFN2lEUx+/m9/8uRT
 4YGXhza47bpVgLF0fPj/jHx5aRDIrwxd8yXqYSmVjNqwgtJ9u2gSRS9K3HM0g0ic
 P8UhsdWc71zdFzr1qvWo6iI6oWoVfC0QiDBBufxLAwD4fULkO3xRzdrhE4KXDRBz
 jOOH+noUReTK+waUinBObbYll2LFP5Rg+GI7JzApB+zCykgSxhT4rqGiihbdtQjS
 fzKVk10DgKaoEfb1ePRxL8LXmipANPF5tt1jHb8i8iZm1NQH0U3nk+HS01wLuX2q
 DsvX5XY+aAzT99suGZUpswEGgF8Fj5d182EOUyCCR567JH7zCVMhjZjRL7LZGGId
 gJ7ZS8kzhiULPPvETpjx8xurwje+3aY5O1M3moCi/CH70hJSENwj6+l8M8RW/Z76
 b9LD4ZOHTuZxY9k2cX+oKsVlLL0ysXYwEsie1bDnROm6bx6duakq7KtSy+G5Zh9e
 QOUqMvQm4ThjqV3NfOl+sjdzt62p7IlnocBVx9PMMQfGlk9EtzvR1RGtqr/5PMiX
 g7YIHlt0RxU/8NnGkYLk132cFah74saCgTr/swxWy1jCVX4sTFXz1l9Shxa6+Twc
 Uu+RIjosQNxNiL1Tsve/R9je/EMROYKvNIPI/rP+Zq2ogEtYTjARboa7Qy9XWBmb
 S/pimL/8yHHrMArrjGlc
 =Jkv1
 -----END PGP SIGNATURE-----

Merge tag 'backlight-for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "New Device Support
   - None

  New Functionality:
   - None

  Core Frameworks:
   - Reject legacy PWM request for device defined in DT

  Fix-ups:
   - Remove unnecessary MODULE_ALIAS(); adp8860_bl, adp8870_bl
   - Simplify code: pm8941-wled
   - Supply default-brightness logic; pm8941-wled

  Bug Fixes:
   - Clean up OF node; 88pm860x_bl
   - Ensure struct is zeroed; lp855x_bl"

* tag 'backlight-for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: pm8941-wled: Add default-brightness property
  backlight: pm8941-wled: Fix ptr_ret.cocci warnings
  backlight: pwm: Reject legacy PWM request for device defined in DT
  backlight: 88pm860x_bl: Add missing of_node_put
  backlight: adp8870: Remove unnecessary MODULE_ALIAS()
  backlight: adp8860: Remove unnecessary MODULE_ALIAS()
  backlight: lp855x: Make sure props struct is zeroed
This commit is contained in:
Linus Torvalds 2015-11-06 10:53:48 -08:00
commit 5bc23a0cde
7 changed files with 22 additions and 16 deletions

View file

@ -5,6 +5,8 @@ Required properties:
- reg: slave address
Optional properties:
- default-brightness: brightness value on boot, value from: 0-4095
default: 2048
- label: The name of the backlight device
- qcom,cs-out: bool; enable current sink output
- qcom,cabc: bool; enable content adaptive backlight control

View file

@ -180,6 +180,7 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev,
data->iset = PM8606_WLED_CURRENT(iset);
of_property_read_u32(np, "marvell,88pm860x-pwm",
&data->pwm);
of_node_put(np);
break;
}
}

View file

@ -819,4 +819,3 @@ module_i2c_driver(adp8860_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("ADP8860 Backlight driver");
MODULE_ALIAS("i2c:adp8860-backlight");

View file

@ -992,4 +992,3 @@ module_i2c_driver(adp8870_driver);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("ADP8870 Backlight driver");
MODULE_ALIAS("i2c:adp8870-backlight");

View file

@ -283,6 +283,7 @@ static int lp855x_backlight_register(struct lp855x *lp)
struct lp855x_platform_data *pdata = lp->pdata;
const char *name = pdata->name ? : DEFAULT_BL_NAME;
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = MAX_BRIGHTNESS;

View file

@ -17,6 +17,9 @@
#include <linux/of_device.h>
#include <linux/regmap.h>
/* From DT binding */
#define PM8941_WLED_DEFAULT_BRIGHTNESS 2048
#define PM8941_WLED_REG_VAL_BASE 0x40
#define PM8941_WLED_REG_VAL_MAX 0xFFF
@ -373,6 +376,7 @@ static int pm8941_wled_probe(struct platform_device *pdev)
struct backlight_device *bl;
struct pm8941_wled *wled;
struct regmap *regmap;
u32 val;
int rc;
regmap = dev_get_regmap(pdev->dev.parent, NULL);
@ -395,16 +399,17 @@ static int pm8941_wled_probe(struct platform_device *pdev)
if (rc)
return rc;
val = PM8941_WLED_DEFAULT_BRIGHTNESS;
of_property_read_u32(pdev->dev.of_node, "default-brightness", &val);
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
props.brightness = val;
props.max_brightness = PM8941_WLED_REG_VAL_MAX;
bl = devm_backlight_device_register(&pdev->dev, wled->name,
&pdev->dev, wled,
&pm8941_wled_ops, &props);
if (IS_ERR(bl))
return PTR_ERR(bl);
return 0;
return PTR_ERR_OR_ZERO(bl);
};
static const struct of_device_id pm8941_wled_match_table[] = {

View file

@ -271,19 +271,18 @@ static int pwm_backlight_probe(struct platform_device *pdev)
}
pb->pwm = devm_pwm_get(&pdev->dev, NULL);
if (IS_ERR(pb->pwm)) {
ret = PTR_ERR(pb->pwm);
if (ret == -EPROBE_DEFER)
goto err_alloc;
if (IS_ERR(pb->pwm) && PTR_ERR(pb->pwm) != -EPROBE_DEFER
&& !pdev->dev.of_node) {
dev_err(&pdev->dev, "unable to request PWM, trying legacy API\n");
pb->legacy = true;
pb->pwm = pwm_request(data->pwm_id, "pwm-backlight");
if (IS_ERR(pb->pwm)) {
dev_err(&pdev->dev, "unable to request legacy PWM\n");
ret = PTR_ERR(pb->pwm);
goto err_alloc;
}
if (IS_ERR(pb->pwm)) {
ret = PTR_ERR(pb->pwm);
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "unable to request PWM\n");
goto err_alloc;
}
dev_dbg(&pdev->dev, "got pwm for backlight\n");