[RFC PATCH 10/15] pwm: add the PWM initial state retrieval infra
flat view
STALE4122d
SUPERSEDED
From: Boris Brezillon <hidden>
Date: 2015-07-01 08:21:56
Also in:
linux-fbdev, linux-leds, linux-pwm, linux-tegra
Subsystem:
pwm subsystem, the rest · Maintainers:
Uwe Kleine-König, Linus Torvalds
Status: Superseded by v5 (posted 2016-03-30). [go to v5]
Revision rfc (5 revisions archived).
Revisions (5)
- rfc current
- v2 [diff against previous]
- v3 [diff against previous]
- v4 [diff against previous]
- v5 [diff against previous] re-posted go to this post
Add a ->init_state() function to the pwm_ops struct to let PWM drivers
initialize the PWM state attached to a PWM device.
Signed-off-by: Boris Brezillon <redacted>
---
drivers/pwm/core.c | 3 +++
include/linux/pwm.h | 2 ++
2 files changed, 5 insertions(+)
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 3e830ce..30631f5 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c@@ -264,6 +264,9 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip, pwm->hwpwm = i; pwm_set_default_polarity(pwm, polarity); + if (chip->ops->init_state) + chip->ops->init_state(chip, pwm); + radix_tree_insert(&pwm_tree, pwm->pwm, pwm); }
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 0f36a06..b47244a 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h@@ -177,6 +177,8 @@ struct pwm_ops { struct pwm_device *pwm); void (*disable)(struct pwm_chip *chip, struct pwm_device *pwm); + void (*init_state)(struct pwm_chip *chip, + struct pwm_device *pwm); #ifdef CONFIG_DEBUG_FS void (*dbg_show)(struct pwm_chip *chip, struct seq_file *s);
--
1.9.1