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video: ARM CLCD: support pads connected in reverse order

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There are CLCDs connected with the pads in BGR rather than RGB
order. It really doesn't matter since the CLCD has a flag and
a bit to switch the position of the RGB and BGR components.
This is needed to put something logical into the
arm,pl11x,tft-r0g0b0-pads property of the device tree on the
Nomadik which will then be <16 8 0>.

Cc: Pawel Moll <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Russell King <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
This commit is contained in:
Linus Walleij 2016-06-16 11:36:15 +02:00 • committed by Tomi Valkeinen
commit 03d14c36af
2 changed files with 23 additions and 3 deletions
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8
drivers/video/fbdev/amba-clcd.c
View file

@ -675,6 +675,7 @@ static int clcdfb_of_init_tft_panel(struct clcd_fb *fb, u32 r0, u32 g0, u32 b0)
} panels[] = {
{ 0x110, 1, 7, 13, CLCD_CAP_5551 },
{ 0x110, 0, 8, 16, CLCD_CAP_888 },
{ 0x110, 16, 8, 0, CLCD_CAP_888 },
{ 0x111, 4, 14, 20, CLCD_CAP_444 },
{ 0x111, 3, 11, 19, CLCD_CAP_444 | CLCD_CAP_5551 },
{ 0x111, 3, 10, 19, CLCD_CAP_444 | CLCD_CAP_5551 |
@ -702,6 +703,13 @@ static int clcdfb_of_init_tft_panel(struct clcd_fb *fb, u32 r0, u32 g0, u32 b0)
fb->panel->caps = panels[i].caps;
}
/*
* If we actually physically connected the R lines to B and
* vice versa
*/
if (r0 != 0 && b0 == 0)
fb->panel->bgr_connection = true;
return fb->panel->caps ? 0 : -EINVAL;
}