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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-25 20:40:15 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-25 20:40:15 +0300
commitecc5fbd5ef472a4c659dc56a5739b3f041c0530c (patch)
treeeec1c3ddd6082e6391d7d27ae78d813a8f6c216c /drivers/input
parent1f93d2abf488c6a41bdd5e6caf80b559493eea8d (diff)
parent18c588786c08458f5d965d8735ab48f9e51e0b4b (diff)
downloadlinux-ecc5fbd5ef472a4c659dc56a5739b3f041c0530c.tar.xz
Merge tag 'pwm/for-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm updates from Thierry Reding: "This set of changes introduces an atomic API to the PWM subsystem. This is influenced by the DRM atomic API that was introduced a while back, though it is obviously a lot simpler. The fundamental idea remains the same, though: drivers provide a single callback to implement the atomic configuration of a PWM channel. As a side-effect the PWM subsystem gains the ability for initial state retrieval, so that the logical state mirrors that of the hardware. Many use-cases don't care about this, but for others it is essential. These new features require changes in all users, which these patches take care of. The core is transitioned to use the atomic callback if available and provides a fallback mechanism for other drivers. Changes to transition users and drivers to the atomic API are postponed to v4.8" * tag 'pwm/for-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (30 commits) pwm: Add information about polarity, duty cycle and period to debugfs pwm: Switch to the atomic API pwm: Update documentation pwm: Add core infrastructure to allow atomic updates pwm: Add hardware readout infrastructure pwm: Move the enabled/disabled info into pwm_state pwm: Introduce the pwm_state concept pwm: Keep PWM state in sync with hardware state ARM: Explicitly apply PWM config extracted from pwm_args drm: i915: Explicitly apply PWM config extracted from pwm_args input: misc: pwm-beeper: Explicitly apply PWM config extracted from pwm_args input: misc: max8997: Explicitly apply PWM config extracted from pwm_args backlight: lm3630a: explicitly apply PWM config extracted from pwm_args backlight: lp855x: Explicitly apply PWM config extracted from pwm_args backlight: lp8788: Explicitly apply PWM config extracted from pwm_args backlight: pwm_bl: Use pwm_get_args() where appropriate fbdev: ssd1307fb: Use pwm_get_args() where appropriate regulator: pwm: Use pwm_get_args() where appropriate leds: pwm: Use pwm_get_args() where appropriate input: misc: max77693: Use pwm_get_args() where appropriate ...
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/misc/max77693-haptic.c17
-rw-r--r--drivers/input/misc/max8997_haptic.c6
-rw-r--r--drivers/input/misc/pwm-beeper.c6
3 files changed, 26 insertions, 3 deletions
diff --git a/drivers/input/misc/max77693-haptic.c b/drivers/input/misc/max77693-haptic.c
index 6d96bff32a0e..29ddeb7be84b 100644
--- a/drivers/input/misc/max77693-haptic.c
+++ b/drivers/input/misc/max77693-haptic.c
@@ -70,10 +70,13 @@ struct max77693_haptic {
static int max77693_haptic_set_duty_cycle(struct max77693_haptic *haptic)
{
- int delta = (haptic->pwm_dev->period + haptic->pwm_duty) / 2;
+ struct pwm_args pargs;
+ int delta;
int error;
- error = pwm_config(haptic->pwm_dev, delta, haptic->pwm_dev->period);
+ pwm_get_args(haptic->pwm_dev, &pargs);
+ delta = (pargs.period + haptic->pwm_duty) / 2;
+ error = pwm_config(haptic->pwm_dev, delta, pargs.period);
if (error) {
dev_err(haptic->dev, "failed to configure pwm: %d\n", error);
return error;
@@ -234,6 +237,7 @@ static int max77693_haptic_play_effect(struct input_dev *dev, void *data,
struct ff_effect *effect)
{
struct max77693_haptic *haptic = input_get_drvdata(dev);
+ struct pwm_args pargs;
u64 period_mag_multi;
haptic->magnitude = effect->u.rumble.strong_magnitude;
@@ -245,7 +249,8 @@ static int max77693_haptic_play_effect(struct input_dev *dev, void *data,
* The formula to convert magnitude to pwm_duty as follows:
* - pwm_duty = (magnitude * pwm_period) / MAX_MAGNITUDE(0xFFFF)
*/
- period_mag_multi = (u64)haptic->pwm_dev->period * haptic->magnitude;
+ pwm_get_args(haptic->pwm_dev, &pargs);
+ period_mag_multi = (u64)pargs.period * haptic->magnitude;
haptic->pwm_duty = (unsigned int)(period_mag_multi >>
MAX_MAGNITUDE_SHIFT);
@@ -329,6 +334,12 @@ static int max77693_haptic_probe(struct platform_device *pdev)
return PTR_ERR(haptic->pwm_dev);
}
+ /*
+ * FIXME: pwm_apply_args() should be removed when switching to the
+ * atomic PWM API.
+ */
+ pwm_apply_args(haptic->pwm_dev);
+
haptic->motor_reg = devm_regulator_get(&pdev->dev, "haptic");
if (IS_ERR(haptic->motor_reg)) {
dev_err(&pdev->dev, "failed to get regulator\n");
diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c
index 8d6326d7e7be..99bc762881d5 100644
--- a/drivers/input/misc/max8997_haptic.c
+++ b/drivers/input/misc/max8997_haptic.c
@@ -306,6 +306,12 @@ static int max8997_haptic_probe(struct platform_device *pdev)
error);
goto err_free_mem;
}
+
+ /*
+ * FIXME: pwm_apply_args() should be removed when switching to
+ * the atomic PWM API.
+ */
+ pwm_apply_args(chip->pwm);
break;
default:
diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c
index f2261ab54701..8d7133268745 100644
--- a/drivers/input/misc/pwm-beeper.c
+++ b/drivers/input/misc/pwm-beeper.c
@@ -87,6 +87,12 @@ static int pwm_beeper_probe(struct platform_device *pdev)
goto err_free;
}
+ /*
+ * FIXME: pwm_apply_args() should be removed when switching to
+ * the atomic PWM API.
+ */
+ pwm_apply_args(beeper->pwm);
+
beeper->input = input_allocate_device();
if (!beeper->input) {
dev_err(&pdev->dev, "Failed to allocate input device\n");