Re: [PATCH] drm/cirrus: Add bpp option

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On Tue, Jan 29, 2013 at 09:29:17AM +0100, Takashi Iwai wrote:
> Add a new option, bpp, to specify the default bpp value.
> 
> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
> ---
> 
> This patch is applied on the top of previous two patches.
> I couldn't find an easy way to specify the default bpp, so I cooked
> the driver quickly.  If there is any other convenient way to achieve
> this, let me know...

Well, you can specify the desired bpp with a full mode on the kernel
cmdline - the '-bpp' extension. Reading through the parser I think it
should work even with just the '-bpp' and not a full mode, but I haven't
tested. Look for cmdline_mode->bpp_specified in drm_fb_helper.c and the
relevant parsing code in drm_mode_parse_command_line_for_connector in
drm_modes.c

If that doesn't work for you, I think it's better to extend/fix it than
add driver module options.

Cheers, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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