[U-Boot] [PATCH v1 7/8] video: drop duplicate set of DISPC_CONFIG register

[Stefano Babic <sbabic@denx.de>]

On 28/08/2012 12:40, Jeroen Hofstee wrote:
> Hi Stefano,
> 

Hi Jeroen,

> On 08/28/2012 09:46 AM, Stefano Babic wrote:
>> Signed-off-by: Stefano Babic <sbabic@denx.de>
>> ---
>>   drivers/video/omap3_dss.c |    1 -
>>   1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/video/omap3_dss.c b/drivers/video/omap3_dss.c
>> index 6686718..5fcc0fb 100644
>> --- a/drivers/video/omap3_dss.c
>> +++ b/drivers/video/omap3_dss.c
>> @@ -112,7 +112,6 @@ void omap3_dss_panel_config(const struct
>> panel_config *panel_cfg)
>>       writel(panel_cfg->pol_freq, &dispc->pol_freq);
>>       writel(panel_cfg->divisor, &dispc->divisor);
>>       writel(panel_cfg->lcd_size, &dispc->size_lcd);
>> -    writel(panel_cfg->load_mode << FRAME_MODE_SHIFT, &dispc->config);
>>       writel(panel_cfg->panel_type << TFTSTN_SHIFT |
>>           panel_cfg->data_lines << DATALINES_SHIFT, &dispc->control);
>>       writel(panel_cfg->panel_color, &dispc->default_color0);
> The beagle board doesn't have a framebuffer, but uses the panel color
> only. So only the part till if (!panel_cfg->frame_buffer) is used by the
> beagle
> board, so the other should be removed.
> 
> And perhaps change the FRAME_MODE_SHIFT to LOADMODE_SHIFT
> (both defined as 1 though).

This is exactly the duplication. In code, after some lines :

 writel(panel_cfg->load_mode << LOADMODE_SHIFT, &dispc->config);

that is equivalent to the dropped line. Then I will move this line
before the check if frame_buffer is set. And by the way, I drop
FRAME_MODE_SHIFT.

Best regards,
Stefano


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