On Tue, Jul 29, 2008 at 4:37 PM, Syed Mohammed, Khasim <khasim@xxxxxx> wrote:
>
>> Hi all,
>>
>> Does omap (2&3) DSS support 24 bit output?
>>
>> I was trying to enable DVI support for omap2evm(data lines=24, bits
>> per pixel =24), I couldn't find
>> 24 bit support in omapfb driver(git) and omap24xxfb(linux-2.6.14-omap2-v5).
>>
>> In TRM its given that it supports 24 BPP. Then why its absent in both
>> the drivers?. Does the hardware
>> really support 24 bit format?
>>
> Hardware does support RGB 24 packed and unpacked modes.
>
> In TI code it is implemented in V4L based Video driver and also in FB driver, omap2_disp_config_gfxlayer selects the bpp and configures DISPC_GFX_ATTRIBUTES register accordingly.
>
But in the TI code,
omap24xxfb_check_mode(const struct omap24xxfb_info *oinfo,
struct fb_var_screeninfo *var)
{
u32 pixclock, clkdiv;
u32 display_xres, display_yres;
int output_dev = omap2_disp_get_output_dev(OMAP2_GRAPHICS);
omap2_disp_get_panel_size(output_dev, &display_xres, &display_yres);
if (oinfo->rotation_support) {
if (var->rotate % 90 != 0)
return -EINVAL;
if (!((var->bits_per_pixel == 8) ||
(var->bits_per_pixel == 16)))
return -EINVAL;
in the check var fn it returns -EINVAL if it encounters any bpp other
than 16 or 8
I am using linux-2.6.14-omap2-v5 from TI website, whether this is the
correct version?
> Regards,
> Khasim
> http://khasim.blogspot.com
>
>
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