diff options
authorBoris Brezillon <boris.brezillon@free-electrons.com>2016-04-14 21:17:28 +0200
committerThierry Reding <thierry.reding@gmail.com>2016-05-17 14:45:03 +0200
commit717c18f0e4653bbb74a164e88e5b7ccc5db7684b (patch)
parent6bc24526f8010f208a243cc73df4c6cc48fa18a4 (diff)
fbdev: ssd1307fb: Use pwm_get_args() where appropriate
The PWM framework has clarified the concept of reference PWM config (the platform dependent config retrieved from the DT or the PWM lookup table) and real PWM state. Use pwm_get_args() when the PWM user wants to retrieve this reference config and not the current state. This is part of the rework allowing the PWM framework to support hardware readout and expose real PWM state even when the PWM has just been requested (before the user calls pwm_config/enable/disable()). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index fa34808..652f688 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -286,6 +286,7 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
int ret;
u32 precharge, dclk, com_invdir, compins;
+ struct pwm_args pargs;
if (par->device_info->need_pwm) {
par->pwm = pwm_get(&par->client->dev, NULL);
@@ -294,7 +295,15 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
return PTR_ERR(par->pwm);
- par->pwm_period = pwm_get_period(par->pwm);
+ /*
+ * FIXME: pwm_apply_args() should be removed when switching to
+ * the atomic PWM API.
+ */
+ pwm_apply_args(par->pwm);
+ pwm_get_args(par->pwm, &pargs);
+ par->pwm_period = pargs.period;
/* Enable the PWM */
pwm_config(par->pwm, par->pwm_period / 2, par->pwm_period);