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authorMichael Welling <mwelling@ieee.org>2014-07-04 06:26:36 +0400
committerTomi Valkeinen <tomi.valkeinen@ti.com>2014-07-30 15:13:33 +0400
commitd7aa64c32bdcb2c1bc5932b3d2927863ae31ccbc (patch)
tree21e7ef73ea70e319bdf7ad8a1c0ffd338ff6c903 /drivers/video/fbdev/atmel_lcdfb.c
parentd10715be03bd8bad59ddc50236cb140c3bd73c7b (diff)
downloadlinux-d7aa64c32bdcb2c1bc5932b3d2927863ae31ccbc.tar.xz
drivers: video: fbdev: atmel_lcdfb.c: Add ability to inverted backlight PWM.
The code has a variable to change the polarity of the PWM backlight control but it was not being initialized. This patch adds a devicetree entry to set the variable if required. Signed-off-by: Michael Welling <mwelling@ieee.org> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video/fbdev/atmel_lcdfb.c')
-rw-r--r--drivers/video/fbdev/atmel_lcdfb.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c
index e683b6ef9594..010443f5f555 100644
--- a/drivers/video/fbdev/atmel_lcdfb.c
+++ b/drivers/video/fbdev/atmel_lcdfb.c
@@ -290,7 +290,7 @@ static void init_contrast(struct atmel_lcdfb_info *sinfo)
/* contrast pwm can be 'inverted' */
if (pdata->lcdcon_pol_negative)
- contrast_ctr &= ~(ATMEL_LCDC_POL_POSITIVE);
+ contrast_ctr &= ~(ATMEL_LCDC_POL_POSITIVE);
/* have some default contrast/backlight settings */
lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, contrast_ctr);
@@ -1095,6 +1095,7 @@ static int atmel_lcdfb_of_init(struct atmel_lcdfb_info *sinfo)
pdata->lcd_wiring_mode = ret;
pdata->lcdcon_is_backlight = of_property_read_bool(display_np, "atmel,lcdcon-backlight");
+ pdata->lcdcon_pol_negative = of_property_read_bool(display_np, "atmel,lcdcon-backlight-inverted");
timings = of_get_display_timings(display_np);
if (!timings) {