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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2021-03-01 21:45:37 +0300
committerThierry Reding <thierry.reding@gmail.com>2021-03-22 13:48:49 +0300
commitacf3402d83636ef4fb81aa35593f1c1fd7f05738 (patch)
tree8c5f5d683affa7c72172cb640c9ff951a7a5df7b /drivers/pwm
parentca0d2fb790eb26fc53d851007ed1ead6c048be11 (diff)
downloadlinux-acf3402d83636ef4fb81aa35593f1c1fd7f05738.tar.xz
pwm: ab8500: Implement .apply instead of .config, .enable and .disable
To eventually get rid of all legacy drivers convert this driver to the modern world implementing .apply(). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-ab8500.c53
1 files changed, 25 insertions, 28 deletions
diff --git a/drivers/pwm/pwm-ab8500.c b/drivers/pwm/pwm-ab8500.c
index 58c6c0f5b0ec..5b0a71243d0f 100644
--- a/drivers/pwm/pwm-ab8500.c
+++ b/drivers/pwm/pwm-ab8500.c
@@ -24,23 +24,37 @@ struct ab8500_pwm_chip {
struct pwm_chip chip;
};
-static int ab8500_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
- int duty_ns, int period_ns)
+static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
+ const struct pwm_state *state)
{
- int ret = 0;
- unsigned int higher_val, lower_val;
+ int ret;
u8 reg;
+ unsigned int higher_val, lower_val;
+
+ if (state->polarity != PWM_POLARITY_NORMAL)
+ return -EINVAL;
+
+ if (!state->enabled) {
+ ret = abx500_mask_and_set_register_interruptible(chip->dev,
+ AB8500_MISC, AB8500_PWM_OUT_CTRL7_REG,
+ 1 << (chip->base - 1), 0);
+
+ if (ret < 0)
+ dev_err(chip->dev, "%s: Failed to disable PWM, Error %d\n",
+ pwm->label, ret);
+ return ret;
+ }
/*
* get the first 8 bits that are be written to
* AB8500_PWM_OUT_CTRL1_REG[0:7]
*/
- lower_val = duty_ns & 0x00FF;
+ lower_val = state->duty_cycle & 0x00FF;
/*
* get bits [9:10] that are to be written to
* AB8500_PWM_OUT_CTRL2_REG[0:1]
*/
- higher_val = ((duty_ns & 0x0300) >> 8);
+ higher_val = ((state->duty_cycle & 0x0300) >> 8);
reg = AB8500_PWM_OUT_CTRL1_REG + ((chip->base - 1) * 2);
@@ -48,15 +62,11 @@ static int ab8500_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
reg, (u8)lower_val);
if (ret < 0)
return ret;
+
ret = abx500_set_register_interruptible(chip->dev, AB8500_MISC,
(reg + 1), (u8)higher_val);
-
- return ret;
-}
-
-static int ab8500_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- int ret;
+ if (ret < 0)
+ return ret;
ret = abx500_mask_and_set_register_interruptible(chip->dev,
AB8500_MISC, AB8500_PWM_OUT_CTRL7_REG,
@@ -64,25 +74,12 @@ static int ab8500_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
if (ret < 0)
dev_err(chip->dev, "%s: Failed to enable PWM, Error %d\n",
pwm->label, ret);
- return ret;
-}
-static void ab8500_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
- int ret;
-
- ret = abx500_mask_and_set_register_interruptible(chip->dev,
- AB8500_MISC, AB8500_PWM_OUT_CTRL7_REG,
- 1 << (chip->base - 1), 0);
- if (ret < 0)
- dev_err(chip->dev, "%s: Failed to disable PWM, Error %d\n",
- pwm->label, ret);
+ return ret;
}
static const struct pwm_ops ab8500_pwm_ops = {
- .config = ab8500_pwm_config,
- .enable = ab8500_pwm_enable,
- .disable = ab8500_pwm_disable,
+ .apply = ab8500_pwm_apply,
.owner = THIS_MODULE,
};