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ARM: versatile: support CLCD RGB565 layout with blue LSB

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RGB565 with blue in the LSB wasn't supported.  Add support for this
layout.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-01-19 23:29:12 +00:00
parent 95c34f831f
commit 9728c1b6a7
1 changed files with 16 additions and 3 deletions
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19
arch/arm/mach-versatile/core.c
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@ -630,18 +630,22 @@ static void versatile_clcd_disable(struct clcd_fb *fb)
*/
static void versatile_clcd_enable(struct clcd_fb *fb)
{
struct fb_var_screeninfo *var = &fb->fb.var;
void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
u32 val;
val = readl(sys_clcd);
val &= ~SYS_CLCD_MODE_MASK;
switch (fb->fb.var.green.length) {
switch (var->green.length) {
case 5:
val |= SYS_CLCD_MODE_5551;
break;
case 6:
val |= SYS_CLCD_MODE_565_RLSB;
if (var->red.offset == 0)
val |= SYS_CLCD_MODE_565_RLSB;
else
val |= SYS_CLCD_MODE_565_BLSB;
break;
case 8:
val |= SYS_CLCD_MODE_888;
@ -709,10 +713,19 @@ static void versatile_clcd_remove(struct clcd_fb *fb)
fb->fb.screen_base, fb->fb.fix.smem_start);
}
static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs)
{
clcdfb_decode(fb, regs);
/* Always clear BGR for RGB565: we do the routing externally */
if (fb->fb.var.green.length == 6)
regs->cntl &= ~CNTL_BGR;
}
static struct clcd_board clcd_plat_data = {
.name = "Versatile",
.check = clcdfb_check,
.decode = clcdfb_decode,
.decode = versatile_clcd_decode,
.disable = versatile_clcd_disable,
.enable = versatile_clcd_enable,
.setup = versatile_clcd_setup,