diff options
Diffstat (limited to 'drivers/video/atmel_lcdfb.c')
| -rw-r--r-- | drivers/video/atmel_lcdfb.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index bac16345021..16da8af7425 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c @@ -68,7 +68,7 @@ static void atmel_lcdfb_update_dma2d(struct atmel_lcdfb_info *sinfo, } #endif -static const u32 contrast_ctr = ATMEL_LCDC_PS_DIV8 +static u32 contrast_ctr = ATMEL_LCDC_PS_DIV8 | ATMEL_LCDC_POL_POSITIVE | ATMEL_LCDC_ENA_PWMENABLE; @@ -163,6 +163,10 @@ static void exit_backlight(struct atmel_lcdfb_info *sinfo) static void init_contrast(struct atmel_lcdfb_info *sinfo) { + /* contrast pwm can be 'inverted' */ + if (sinfo->lcdcon_pol_negative) + contrast_ctr &= ~(ATMEL_LCDC_POL_POSITIVE); + /* have some default contrast/backlight settings */ lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, contrast_ctr); lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, ATMEL_LCDC_CVAL_DEFAULT); @@ -816,6 +820,7 @@ static int __init atmel_lcdfb_probe(struct platform_device *pdev) sinfo->guard_time = pdata_sinfo->guard_time; sinfo->smem_len = pdata_sinfo->smem_len; sinfo->lcdcon_is_backlight = pdata_sinfo->lcdcon_is_backlight; + sinfo->lcdcon_pol_negative = pdata_sinfo->lcdcon_pol_negative; sinfo->lcd_wiring_mode = pdata_sinfo->lcd_wiring_mode; } else { dev_err(dev, "cannot get default configuration\n"); |