[PATCH RESEND] video: da8xx-fb rev2: fix disabling of palette completion interrupt

[PATCH RESEND] video: da8xx-fb rev2: fix disabling of palette completion interrupt

[Manjunathappa, Prakash]

Writing '1' to particular bit of IRQENABLE_CLEAR register disables the
corresponding interrupt on revision 2 LCDC. This register was wrongly
configured to disable all previous enabled interrupts instead of
disabling only palette completion interrupt. Patch fixes it by clearing
only palette completion interrupt bit.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
---
Resending as my earlier patch seems like not reached fbdev mailing list.

 drivers/video/da8xx-fb.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 47118c7..88e98ea 100644
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -715,7 +715,6 @@ static irqreturn_t lcdc_irq_handler_rev02(int irq, void *arg)
 {
 	struct da8xx_fb_par *par = arg;
 	u32 stat = lcdc_read(LCD_MASKED_STAT_REG);
-	u32 reg_int;
 
 	if ((stat & LCD_SYNC_LOST) && (stat & LCD_FIFO_UNDERFLOW)) {
 		lcd_disable_raster();
@@ -732,10 +731,8 @@ static irqreturn_t lcdc_irq_handler_rev02(int irq, void *arg)
 
 		lcdc_write(stat, LCD_MASKED_STAT_REG);
 
-		/* Disable PL completion inerrupt */
-		reg_int = lcdc_read(LCD_INT_ENABLE_CLR_REG) |
-		       (LCD_V2_PL_INT_ENA);
-		lcdc_write(reg_int, LCD_INT_ENABLE_CLR_REG);
+		/* Disable PL completion interrupt */
+		lcdc_write(LCD_V2_PL_INT_ENA, LCD_INT_ENABLE_CLR_REG);
 
 		/* Setup and start data loading mode */
 		lcd_blit(LOAD_DATA, par);
-- 
1.7.1

Re: [PATCH RESEND] video: da8xx-fb rev2: fix disabling of palette completion interrupt

[Florian Tobias Schandinat]

On 07/18/2012 03:21 PM, Manjunathappa, Prakash wrote:
> Writing '1' to particular bit of IRQENABLE_CLEAR register disables the
> corresponding interrupt on revision 2 LCDC. This register was wrongly
> configured to disable all previous enabled interrupts instead of
> disabling only palette completion interrupt. Patch fixes it by clearing
> only palette completion interrupt bit.
> 
> Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>

Applied.


Thanks,

Florian Tobias Schandinat

> ---
> Resending as my earlier patch seems like not reached fbdev mailing list.
> 
>  drivers/video/da8xx-fb.c |    7 ++-----
>  1 files changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
> index 47118c7..88e98ea 100644
> --- a/drivers/video/da8xx-fb.c
> +++ b/drivers/video/da8xx-fb.c
> @@ -715,7 +715,6 @@ static irqreturn_t lcdc_irq_handler_rev02(int irq, void *arg)
>  {
>  	struct da8xx_fb_par *par = arg;
>  	u32 stat = lcdc_read(LCD_MASKED_STAT_REG);
> -	u32 reg_int;
>  
>  	if ((stat & LCD_SYNC_LOST) && (stat & LCD_FIFO_UNDERFLOW)) {
>  		lcd_disable_raster();
> @@ -732,10 +731,8 @@ static irqreturn_t lcdc_irq_handler_rev02(int irq, void *arg)
>  
>  		lcdc_write(stat, LCD_MASKED_STAT_REG);
>  
> -		/* Disable PL completion inerrupt */
> -		reg_int = lcdc_read(LCD_INT_ENABLE_CLR_REG) |
> -		       (LCD_V2_PL_INT_ENA);
> -		lcdc_write(reg_int, LCD_INT_ENABLE_CLR_REG);
> +		/* Disable PL completion interrupt */
> +		lcdc_write(LCD_V2_PL_INT_ENA, LCD_INT_ENABLE_CLR_REG);
>  
>  		/* Setup and start data loading mode */
>  		lcd_blit(LOAD_DATA, par);