summaryrefslogtreecommitdiffstats
path: root/drivers/pwm/pwm-ab8500.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pwm/pwm-ab8500.c')
-rw-r--r--drivers/pwm/pwm-ab8500.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/pwm/pwm-ab8500.c b/drivers/pwm/pwm-ab8500.c
index 670d33daea..f000adab85 100644
--- a/drivers/pwm/pwm-ab8500.c
+++ b/drivers/pwm/pwm-ab8500.c
@@ -24,13 +24,12 @@
#define AB8500_PWM_CLKRATE 9600000
struct ab8500_pwm_chip {
- struct pwm_chip chip;
unsigned int hwid;
};
static struct ab8500_pwm_chip *ab8500_pwm_from_chip(struct pwm_chip *chip)
{
- return container_of(chip, struct ab8500_pwm_chip, chip);
+ return pwmchip_get_drvdata(chip);
}
static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
@@ -92,12 +91,12 @@ static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
* when disabled.
*/
if (!state->enabled || duty_steps == 0) {
- ret = abx500_mask_and_set_register_interruptible(chip->dev,
+ ret = abx500_mask_and_set_register_interruptible(pwmchip_parent(chip),
AB8500_MISC, AB8500_PWM_OUT_CTRL7_REG,
1 << ab8500->hwid, 0);
if (ret < 0)
- dev_err(chip->dev, "%s: Failed to disable PWM, Error %d\n",
+ dev_err(pwmchip_parent(chip), "%s: Failed to disable PWM, Error %d\n",
pwm->label, ret);
return ret;
}
@@ -115,22 +114,22 @@ static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
reg = AB8500_PWM_OUT_CTRL1_REG + (ab8500->hwid * 2);
- ret = abx500_set_register_interruptible(chip->dev, AB8500_MISC,
+ ret = abx500_set_register_interruptible(pwmchip_parent(chip), AB8500_MISC,
reg, lower_val);
if (ret < 0)
return ret;
- ret = abx500_set_register_interruptible(chip->dev, AB8500_MISC,
+ ret = abx500_set_register_interruptible(pwmchip_parent(chip), AB8500_MISC,
(reg + 1), higher_val);
if (ret < 0)
return ret;
/* enable */
- ret = abx500_mask_and_set_register_interruptible(chip->dev,
+ ret = abx500_mask_and_set_register_interruptible(pwmchip_parent(chip),
AB8500_MISC, AB8500_PWM_OUT_CTRL7_REG,
1 << ab8500->hwid, 1 << ab8500->hwid);
if (ret < 0)
- dev_err(chip->dev, "%s: Failed to enable PWM, Error %d\n",
+ dev_err(pwmchip_parent(chip), "%s: Failed to enable PWM, Error %d\n",
pwm->label, ret);
return ret;
@@ -144,7 +143,7 @@ static int ab8500_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
struct ab8500_pwm_chip *ab8500 = ab8500_pwm_from_chip(chip);
unsigned int div, duty_steps;
- ret = abx500_get_register_interruptible(chip->dev, AB8500_MISC,
+ ret = abx500_get_register_interruptible(pwmchip_parent(chip), AB8500_MISC,
AB8500_PWM_OUT_CTRL7_REG,
&ctrl7);
if (ret)
@@ -157,13 +156,13 @@ static int ab8500_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
return 0;
}
- ret = abx500_get_register_interruptible(chip->dev, AB8500_MISC,
+ ret = abx500_get_register_interruptible(pwmchip_parent(chip), AB8500_MISC,
AB8500_PWM_OUT_CTRL1_REG + (ab8500->hwid * 2),
&lower_val);
if (ret)
return ret;
- ret = abx500_get_register_interruptible(chip->dev, AB8500_MISC,
+ ret = abx500_get_register_interruptible(pwmchip_parent(chip), AB8500_MISC,
AB8500_PWM_OUT_CTRL2_REG + (ab8500->hwid * 2),
&higher_val);
if (ret)
@@ -185,6 +184,7 @@ static const struct pwm_ops ab8500_pwm_ops = {
static int ab8500_pwm_probe(struct platform_device *pdev)
{
+ struct pwm_chip *chip;
struct ab8500_pwm_chip *ab8500;
int err;
@@ -195,16 +195,16 @@ static int ab8500_pwm_probe(struct platform_device *pdev)
* Nothing to be done in probe, this is required to get the
* device which is required for ab8500 read and write
*/
- ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
- if (ab8500 == NULL)
- return -ENOMEM;
+ chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*ab8500));
+ if (IS_ERR(chip))
+ return PTR_ERR(chip);
- ab8500->chip.dev = &pdev->dev;
- ab8500->chip.ops = &ab8500_pwm_ops;
- ab8500->chip.npwm = 1;
+ ab8500 = ab8500_pwm_from_chip(chip);
+
+ chip->ops = &ab8500_pwm_ops;
ab8500->hwid = pdev->id - 1;
- err = devm_pwmchip_add(&pdev->dev, &ab8500->chip);
+ err = devm_pwmchip_add(&pdev->dev, chip);
if (err < 0)
return dev_err_probe(&pdev->dev, err, "Failed to add pwm chip\n");