Replace legacy pwm_get/set_xxx() and pwm_config/enable/disable() calls by pwm_get/apply_state().
Signed-off-by: Boris Brezillon boris.brezillon@free-electrons.com --- drivers/pwm/core.c | 5 ++++- drivers/pwm/sysfs.c | 61 +++++++++++++++++++++++++++++++---------------------- 2 files changed, 40 insertions(+), 26 deletions(-)
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 62e6b3c..c2b1569 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -882,13 +882,16 @@ static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s)
for (i = 0; i < chip->npwm; i++) { struct pwm_device *pwm = &chip->pwms[i]; + struct pwm_state pstate; + + pwm_get_state(pwm, &pstate);
seq_printf(s, " pwm-%-3d (%-20.20s):", i, pwm->label);
if (test_bit(PWMF_REQUESTED, &pwm->flags)) seq_puts(s, " requested");
- if (pwm_is_enabled(pwm)) + if (pstate.enabled) seq_puts(s, " enabled");
seq_puts(s, "\n"); diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c index ab28c89..7ec1747 100644 --- a/drivers/pwm/sysfs.c +++ b/drivers/pwm/sysfs.c @@ -47,13 +47,13 @@ static ssize_t period_show(struct device *child, { struct pwm_export *export = child_to_pwm_export(child); const struct pwm_device *pwm = export->pwm; - unsigned int period; + struct pwm_state pstate;
mutex_lock(&export->lock); - period = pwm_get_period(pwm); + pwm_get_state(pwm, &pstate); mutex_unlock(&export->lock);
- return sprintf(buf, "%u\n", period); + return sprintf(buf, "%u\n", pstate.period); }
static ssize_t period_store(struct device *child, @@ -62,6 +62,7 @@ static ssize_t period_store(struct device *child, { struct pwm_export *export = child_to_pwm_export(child); struct pwm_device *pwm = export->pwm; + struct pwm_state pstate; unsigned int val; int ret;
@@ -70,7 +71,9 @@ static ssize_t period_store(struct device *child, return ret;
mutex_lock(&export->lock); - ret = pwm_config(pwm, pwm_get_duty_cycle(pwm), val); + pwm_get_state(pwm, &pstate); + pstate.period = val; + ret = pwm_apply_state(pwm, &pstate); mutex_unlock(&export->lock);
return ret ? : size; @@ -82,13 +85,13 @@ static ssize_t duty_cycle_show(struct device *child, { struct pwm_export *export = child_to_pwm_export(child); const struct pwm_device *pwm = export->pwm; - unsigned int duty; + struct pwm_state pstate;
mutex_lock(&export->lock); - duty = pwm_get_duty_cycle(pwm); + pwm_get_state(pwm, &pstate); mutex_unlock(&export->lock);
- return sprintf(buf, "%u\n", duty); + return sprintf(buf, "%u\n", pstate.duty_cycle); }
static ssize_t duty_cycle_store(struct device *child, @@ -97,6 +100,7 @@ static ssize_t duty_cycle_store(struct device *child, { struct pwm_export *export = child_to_pwm_export(child); struct pwm_device *pwm = export->pwm; + struct pwm_state pstate; unsigned int val; int ret;
@@ -105,7 +109,9 @@ static ssize_t duty_cycle_store(struct device *child, return ret;
mutex_lock(&export->lock); - ret = pwm_config(pwm, val, pwm_get_period(pwm)); + pwm_get_state(pwm, &pstate); + pstate.duty_cycle = val; + ret = pwm_apply_state(pwm, &pstate); mutex_unlock(&export->lock);
return ret ? : size; @@ -117,13 +123,13 @@ static ssize_t enable_show(struct device *child, { struct pwm_export *export = child_to_pwm_export(child); const struct pwm_device *pwm = export->pwm; - bool enabled; + struct pwm_state pstate;
mutex_lock(&export->lock); - enabled = pwm_is_enabled(pwm); + pwm_get_state(pwm, &pstate); mutex_unlock(&export->lock);
- return sprintf(buf, "%d\n", enabled); + return sprintf(buf, "%d\n", pstate.enabled); }
static ssize_t enable_store(struct device *child, @@ -132,24 +138,20 @@ static ssize_t enable_store(struct device *child, { struct pwm_export *export = child_to_pwm_export(child); struct pwm_device *pwm = export->pwm; + struct pwm_state pstate; int val, ret;
ret = kstrtoint(buf, 0, &val); if (ret) return ret;
+ if (val != 0 && val != 1) + return -EINVAL; + mutex_lock(&export->lock); - switch (val) { - case 0: - pwm_disable(pwm); - break; - case 1: - ret = pwm_enable(pwm); - break; - default: - ret = -EINVAL; - break; - } + pwm_get_state(pwm, &pstate); + pstate.enabled = val; + ret = pwm_apply_state(pwm, &pstate); mutex_unlock(&export->lock);
return ret ? : size; @@ -162,9 +164,13 @@ static ssize_t polarity_show(struct device *child, struct pwm_export *export = child_to_pwm_export(child); const struct pwm_device *pwm = export->pwm; const char *polarity = "unknown"; + struct pwm_state pstate;
mutex_lock(&export->lock); - switch (pwm_get_polarity(pwm)) { + pwm_get_state(pwm, &pstate); + mutex_unlock(&export->lock); + + switch (pstate.polarity) { case PWM_POLARITY_NORMAL: polarity = "normal"; break; @@ -173,7 +179,6 @@ static ssize_t polarity_show(struct device *child, polarity = "inversed"; break; } - mutex_unlock(&export->lock);
return sprintf(buf, "%s\n", polarity); } @@ -185,6 +190,7 @@ static ssize_t polarity_store(struct device *child, struct pwm_export *export = child_to_pwm_export(child); struct pwm_device *pwm = export->pwm; enum pwm_polarity polarity; + struct pwm_state pstate; int ret;
if (sysfs_streq(buf, "normal")) @@ -195,7 +201,12 @@ static ssize_t polarity_store(struct device *child, return -EINVAL;
mutex_lock(&export->lock); - ret = pwm_set_polarity(pwm, polarity); + pwm_get_state(pwm, &pstate); + pstate.polarity = polarity; + if (pstate.enabled) + ret = -EBUSY; + else + ret = pwm_apply_state(pwm, &pstate); mutex_unlock(&export->lock);
return ret ? : size;