diff options
| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-04-14 21:17:40 +0200 |
|---|---|---|
| committer | Huang, Tao <huangtao@rock-chips.com> | 2017-03-06 18:28:40 +0800 |
| commit | 92c320f5e4687b2235dbac29ef1a5e6444889913 (patch) | |
| tree | a706b7ac18834dc083296e265b398dc1c6ec93ac /drivers/pwm | |
| parent | 8ea6738fe07a59b3c51e56d8830b31d86c734c2c (diff) | |
UPSTREAM: pwm: Add hardware readout infrastructure
Add a ->get_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 <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
(cherry picked from commit 15fa8a43c147213a9563903c87b29671035eb6e8)
Change-Id: Ie37be2d34833cbb6cc4b4b4cb6af98ac721b953a
Signed-off-by: David Wu <david.wu@rock-chips.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 932d4f7123ea..71e2b4b4c6eb 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -271,6 +271,9 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip, pwm->hwpwm = i; pwm->state.polarity = polarity; + if (chip->ops->get_state) + chip->ops->get_state(chip, pwm, &pwm->state); + radix_tree_insert(&pwm_tree, pwm->pwm, pwm); } |