From af4b3a71a5c8204d00c1124c9297a0c48a53ec65 Mon Sep 17 00:00:00 2001 From: Michal Vokáč Date: Fri, 8 Feb 2019 19:24:48 +0100 Subject: video: ssd1307fb: Do not hard code active-low reset sequence MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The SSD130x OLED display reset signal is active low. Now the reset sequence is implemented in such a way that users are forced to define reset-gpios as GPIO_ACTIVE_HIGH in DT to make the reset work. Do not hard code the active-low sequence into the driver but instead allow the user to specify the gpio as GPIO_ACTIVE_LOW to reflect the real world. Reviewed-by: Rob Herring Reviewed-by: Alexandre Belloni Cc: Shawn Guo Cc: Fabio Estevam Cc: Maxime Ripard , Signed-off-by: Michal Vokáč Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/video/fbdev/ssd1307fb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 4061a20cfe24..3b361bc9feb8 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -667,10 +667,10 @@ static int ssd1307fb_probe(struct i2c_client *client, if (par->reset) { /* Reset the screen */ - gpiod_set_value_cansleep(par->reset, 0); - udelay(4); gpiod_set_value_cansleep(par->reset, 1); udelay(4); + gpiod_set_value_cansleep(par->reset, 0); + udelay(4); } if (par->vbat_reg) { -- cgit