diff options
| author |   Michal Vokáč <michal.vokac@ysoft.com> | 2018-10-08 12:57:37 +0200 |
|---|---|---|
| committer |   Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2018-10-08 12:57:37 +0200 |
| commit | 9827f26374fb85e1811f2adbcc25c8a3992dbe7f (patch) | |
| tree | 0434aaeff7a455f14b00780432b6627ff8332172 /drivers/video | |
| parent | video: ssd1307fb: Use gpiod_set_value_cansleep() for reset (diff) | |
| download | linux-dev-9827f26374fb85e1811f2adbcc25c8a3992dbe7f.tar.xz linux-dev-9827f26374fb85e1811f2adbcc25c8a3992dbe7f.zip | |
video: ssd1307fb: Do not hard code active-low reset sequence
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.
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/ssd1307fb.c | 4 |
1 files changed, 2 insertions, 2 deletions
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) { |