[PATCH v5 44/46] video: ssd1307fb: switch to the atomic PWM API

Boris Brezillon
2016-03-30T20:04:07Z

pwm_config/enable/disable() have been deprecated and should be replaced
by pwm_apply_state().

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/video/fbdev/ssd1307fb.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index df9c63a..ed9a115 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -289,6 +289,8 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
struct pwm_args pargs = { };

if (par->device_info->need_pwm) {
+ struct pwm_state pstate;
+
par->pwm = pwm_get(&par->client->dev, NULL);
if (IS_ERR(par->pwm)) {
dev_err(&par->client->dev, "Could not get PWM from device tree!\n");
@@ -296,10 +298,14 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
}

pwm_get_args(par->pwm, &pargs);
+ pwm_get_state(par->pwm, &pstate);
par->pwm_period = pargs.period;
+
/* Enable the PWM */
- pwm_config(par->pwm, par->pwm_period / 2, par->pwm_period);
- pwm_enable(par->pwm);
+ pstate.period = pargs.period;
+ pstate.duty_cycle = pstate.period / 2;
+ pstate.enabled = true;
+ pwm_apply_state(par->pwm, &pstate);

dev_dbg(&par->client->dev, "Using PWM%d with a %dns period.\n",
par->pwm->pwm, par->pwm_period);
@@ -685,8 +691,12 @@ static int ssd1307fb_probe(struct i2c_client *client,
bl_init_error:
unregister_framebuffer(info);
panel_init_error:
- if (par->device_info->need_pwm) {
- pwm_disable(par->pwm);
+ if (par->device_info->need_pwm && par->pwm) {
+ struct pwm_state pstate;
+
+ pwm_get_state(par->pwm, &pstate);
+ pstate.enabled = false;
+ pwm_apply_state(par->pwm, &pstate);
pwm_put(par->pwm);
};
reset_oled_error:
@@ -707,7 +717,11 @@ static int ssd1307fb_remove(struct i2c_client *client)

unregister_framebuffer(info);
if (par->device_info->need_pwm) {
- pwm_disable(par->pwm);
+ struct pwm_state pstate;
+
+ pwm_get_state(par->pwm, &pstate);
+ pstate.enabled = false;
+ pwm_apply_state(par->pwm, &pstate);
pwm_put(par->pwm);
};
fb_deferred_io_cleanup(info);
--
2.5.0