backlight: lm3630a: explicitly apply PWM config extracted from pwm_args

Call pwm_apply_args() just after requesting the PWM device so that the
polarity and period are initialized according to the information
provided in pwm_args.

This is an intermediate state, and pwm_apply_args() should be dropped as
soon as the atomic PWM infrastructure is in place and the driver makes
use of it.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c
index 3d16bd6e6d3f..60d6c2ac87aa 100644
--- a/drivers/video/backlight/lm3630a_bl.c
+++ b/drivers/video/backlight/lm3630a_bl.c
@@ -424,6 +424,12 @@ static int lm3630a_probe(struct i2c_client *client,
                         dev_err(&client->dev, "fail : get pwm device\n");
                         return PTR_ERR(pchip->pwmd);
                 }
+
+                /*
+                 * FIXME: pwm_apply_args() should be removed when switching to
+                 * the atomic PWM API.
+                 */
+                pwm_apply_args(pchip->pwmd);
         }
 
         /* interrupt enable  : irq 0 is not allowed */