diff options
| -rw-r--r-- | drivers/pwm/core.c | 5 | ||||
| -rw-r--r-- | drivers/pwm/sysfs.c | 48 |
2 files changed, 41 insertions, 12 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 729d457861fd..b0b87b3b52a6 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -948,13 +948,16 @@ 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 state; + + pwm_get_state(pwm, &state); 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 (state.enabled) seq_puts(s, " enabled"); seq_puts(s, "\n"); diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c index 187ca0875cf6..d98599249a05 100644 --- a/drivers/pwm/sysfs.c +++ b/drivers/pwm/sysfs.c @@ -46,8 +46,11 @@ static ssize_t period_show(struct device *child, char *buf) { const struct pwm_device *pwm = child_to_pwm_device(child); + struct pwm_state state; - return sprintf(buf, "%u\n", pwm_get_period(pwm)); + pwm_get_state(pwm, &state); + + return sprintf(buf, "%u\n", state.period); } static ssize_t period_store(struct device *child, @@ -56,6 +59,7 @@ 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 state; unsigned int val; int ret; @@ -64,7 +68,9 @@ 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, &state); + state.period = val; + ret = pwm_apply_state(pwm, &state); mutex_unlock(&export->lock); return ret ? : size; @@ -75,8 +81,11 @@ static ssize_t duty_cycle_show(struct device *child, char *buf) { const struct pwm_device *pwm = child_to_pwm_device(child); + struct pwm_state state; + + pwm_get_state(pwm, &state); - return sprintf(buf, "%u\n", pwm_get_duty_cycle(pwm)); + return sprintf(buf, "%u\n", state.duty_cycle); } static ssize_t duty_cycle_store(struct device *child, @@ -85,6 +94,7 @@ 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 state; unsigned int val; int ret; @@ -93,7 +103,9 @@ 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, &state); + state.duty_cycle = val; + ret = pwm_apply_state(pwm, &state); mutex_unlock(&export->lock); return ret ? : size; @@ -104,8 +116,11 @@ static ssize_t enable_show(struct device *child, char *buf) { const struct pwm_device *pwm = child_to_pwm_device(child); + struct pwm_state state; - return sprintf(buf, "%d\n", pwm_is_enabled(pwm)); + pwm_get_state(pwm, &state); + + return sprintf(buf, "%d\n", state.enabled); } static ssize_t enable_store(struct device *child, @@ -114,6 +129,7 @@ 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 state; int val, ret; ret = kstrtoint(buf, 0, &val); @@ -122,20 +138,24 @@ static ssize_t enable_store(struct device *child, mutex_lock(&export->lock); + pwm_get_state(pwm, &state); + switch (val) { case 0: - pwm_disable(pwm); + state.enabled = false; break; case 1: - ret = pwm_enable(pwm); + state.enabled = true; break; default: ret = -EINVAL; - break; + goto unlock; } - mutex_unlock(&export->lock); + pwm_apply_state(pwm, &state); +unlock: + mutex_unlock(&export->lock); return ret ? : size; } @@ -145,8 +165,11 @@ static ssize_t polarity_show(struct device *child, { const struct pwm_device *pwm = child_to_pwm_device(child); const char *polarity = "unknown"; + struct pwm_state state; + + pwm_get_state(pwm, &state); - switch (pwm_get_polarity(pwm)) { + switch (state.polarity) { case PWM_POLARITY_NORMAL: polarity = "normal"; break; @@ -166,6 +189,7 @@ 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 state; int ret; if (sysfs_streq(buf, "normal")) @@ -176,7 +200,9 @@ static ssize_t polarity_store(struct device *child, return -EINVAL; mutex_lock(&export->lock); - ret = pwm_set_polarity(pwm, polarity); + pwm_get_state(pwm, &state); + state.polarity = polarity; + ret = pwm_apply_state(pwm, &state); mutex_unlock(&export->lock); return ret ? : size; |
