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SubjectIt has added ARGB1888 and ARGB4888 features to Samsung SoC Framebuffer driver.
From
This patch supports ARGB1888 and ARGB4888 for Samsung SoC Framebuffer
driver. (s3c-fb.c)
I tested and is working fine.

If this patch has any problem, please let me know.
I'll look forward to applying to mainline.

Thank you,
InKi Dae.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index e0e7899..55d2298 100644
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -358,9 +358,16 @@ static int s3c_fb_set_par(struct fb_info *info)
writel(data, regs + VIDOSD_B(win_no));

data = var->xres * var->yres;
+
+ u32 osdc_data = 0;
+
+ osdc_data = VIDISD14C_ALPHA1_R(0xf) |
+ VIDISD14C_ALPHA1_G(0xf) |
+ VIDISD14C_ALPHA1_B(0xf);
+
if (s3c_fb_has_osd_d(win_no)) {
writel(data, regs + VIDOSD_D(win_no));
- writel(0, regs + VIDOSD_C(win_no));
+ writel(osdc_data, regs + VIDOSD_C(win_no));
} else
writel(data, regs + VIDOSD_C(win_no));

@@ -409,8 +416,12 @@ static int s3c_fb_set_par(struct fb_info *info)
data |= WINCON1_BPPMODE_19BPP_A1666;
else
data |= WINCON1_BPPMODE_18BPP_666;
- } else if (var->transp.length != 0)
- data |= WINCON1_BPPMODE_25BPP_A1888;
+ } else if (var->transp.length == 1)
+ data |= WINCON1_BPPMODE_25BPP_A1888
+ | WINCON1_BLD_PIX;
+ else if (var->transp.length == 4)
+ data |= WINCON1_BPPMODE_28BPP_A4888
+ | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL;
else
data |= WINCON0_BPPMODE_24BPP_888;

@@ -418,6 +429,20 @@ static int s3c_fb_set_par(struct fb_info *info)
break;
}

+ /* It has no color key control register for window0 */
+ if (win_no > 0) {
+ u32 keycon0_data = 0, keycon1_data = 0;
+
+ keycon0_data = ~(WxKEYCON0_KEYBL_EN |
+ WxKEYCON0_KEYEN_F |
+ WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0);
+
+ keycon1_data = WxKEYCON1_COLVAL(0xffffff);
+
+ writel(keycon0_data, regs + WxKEYCONy(win_no-1, 0));
+ writel(keycon1_data, regs + WxKEYCONy(win_no-1, 1));
+ }
+
writel(data, regs + WINCON(win_no));
writel(0x0, regs + WINxMAP(win_no));

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