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 --- drivers/video/fbdev/ssd1307fb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index fa34808..df9c63a 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 +295,8 @@ static int ssd1307fb_init(struct ssd1307fb_par *par) return PTR_ERR(par->pwm); }
- par->pwm_period = pwm_get_period(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); pwm_enable(par->pwm);