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authorBoris Brezillon <boris.brezillon@free-electrons.com>2016-04-14 22:17:38 +0300
committerThierry Reding <thierry.reding@gmail.com>2016-05-17 15:48:02 +0300
commit43a276b003ed2e03de9d94b02a1ba49c1849b931 (patch)
treeca2442d6fb895eb663ad358e43143fafa23d8cbc /drivers/pwm
parenta8c3862551e063344f80c3e05d595f9d8836f355 (diff)
downloadlinux-43a276b003ed2e03de9d94b02a1ba49c1849b931.tar.xz
pwm: Introduce the pwm_state concept
The PWM state, represented by its period, duty_cycle and polarity is currently directly stored in the PWM device. Declare a pwm_state structure embedding those field so that we can later use this struct to atomically update all the PWM parameters at once. All pwm_get_xxx() helpers are now implemented as wrappers around pwm_get_state(). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/core.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 64330595e17b..f3f91e716a42 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -268,7 +268,7 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip,
pwm->chip = chip;
pwm->pwm = chip->base + i;
pwm->hwpwm = i;
- pwm->polarity = polarity;
+ pwm->state.polarity = polarity;
radix_tree_insert(&pwm_tree, pwm->pwm, pwm);
}
@@ -446,8 +446,8 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
if (err)
return err;
- pwm->duty_cycle = duty_ns;
- pwm->period = period_ns;
+ pwm->state.duty_cycle = duty_ns;
+ pwm->state.period = period_ns;
return 0;
}
@@ -480,7 +480,7 @@ int pwm_set_polarity(struct pwm_device *pwm, enum pwm_polarity polarity)
if (err)
return err;
- pwm->polarity = polarity;
+ pwm->state.polarity = polarity;
return 0;
}