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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2020-03-24 20:05:31 +0300
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2020-04-17 16:49:59 +0300
commit479382360da64e5d31509c72a07e4623ed249db0 (patch)
tree20882325a343bb3125cd21bd89fb2bae668a07a7 /drivers/video
parent72915994e028912add23afce7f16ebd06d2dc73e (diff)
downloadlinux-479382360da64e5d31509c72a07e4623ed249db0.tar.xz
video: ssd1307fb: Convert to atomic PWM API
Use the atomic API wherever appropriate and get rid of pwm_apply_args() call (the reference period and polarity are now explicitly set when calling pwm_apply_state()). We also make use of the pwm_set_relative_duty_cycle() helper to ease relative to absolute duty_cycle conversion. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200324170532.44384-4-andriy.shevchenko@linux.intel.com
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/ssd1307fb.c17
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 1b91fa98863c..0937d8972aa4 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -79,7 +79,6 @@ struct ssd1307fb_par {
u32 prechargep1;
u32 prechargep2;
struct pwm_device *pwm;
- u32 pwm_period;
struct gpio_desc *reset;
struct regulator *vbat_reg;
u32 vcomh;
@@ -297,9 +296,9 @@ static void ssd1307fb_deferred_io(struct fb_info *info,
static int ssd1307fb_init(struct ssd1307fb_par *par)
{
+ struct pwm_state pwmstate;
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);
@@ -308,21 +307,15 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
return PTR_ERR(par->pwm);
}
- /*
- * FIXME: pwm_apply_args() should be removed when switching to
- * the atomic PWM API.
- */
- pwm_apply_args(par->pwm);
+ pwm_init_state(par->pwm, &pwmstate);
+ pwm_set_relative_duty_cycle(&pwmstate, 50, 100);
+ pwm_apply_state(par->pwm, &pwmstate);
- 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);
dev_dbg(&par->client->dev, "Using PWM%d with a %dns period.\n",
- par->pwm->pwm, par->pwm_period);
+ par->pwm->pwm, pwm_get_period(par->pwm));
}
/* Set initial contrast */