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| author | Jingoo Han <jg1.han@samsung.com> | 2012-01-27 14:47:22 +0900 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-01-28 20:58:09 +0000 |
| commit | f7f31e505aa79d91b979a38789b1608744361bdc (patch) | |
| tree | 27dba9088af5473eeefeb2f40b75a64b1ac855da /drivers/video/s3c-fb.c | |
| parent | 05e52b4bfba0d1fa4195abbc4ac29c24033c8e96 (diff) | |
| download | lwn-f7f31e505aa79d91b979a38789b1608744361bdc.tar.gz lwn-f7f31e505aa79d91b979a38789b1608744361bdc.zip | |
video: s3c-fb: add alpha value width setting
This patch adds alpha value width setting according to
transparency value of each window format, using BLENDCON
register. When alpha value is 8 bits, BLENDCON will set
alpha value width as 8 bits.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/s3c-fb.c')
| -rw-r--r-- | drivers/video/s3c-fb.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c index 389189a9e775..9af6c1849c24 100644 --- a/drivers/video/s3c-fb.c +++ b/drivers/video/s3c-fb.c @@ -82,6 +82,7 @@ struct s3c_fb; * @palette: Address of palette memory, or 0 if none. * @has_prtcon: Set if has PRTCON register. * @has_shadowcon: Set if has SHADOWCON register. + * @has_blendcon: Set if has BLENDCON register. * @has_clksel: Set if VIDCON0 register has CLKSEL bit. */ struct s3c_fb_variant { @@ -100,6 +101,7 @@ struct s3c_fb_variant { unsigned int has_prtcon:1; unsigned int has_shadowcon:1; + unsigned int has_blendcon:1; unsigned int has_clksel:1; }; @@ -691,6 +693,17 @@ static int s3c_fb_set_par(struct fb_info *info) writel(data, regs + sfb->variant.wincon + (win_no * 4)); writel(0x0, regs + sfb->variant.winmap + (win_no * 4)); + /* Set alpha value width */ + if (sfb->variant.has_blendcon) { + data = readl(sfb->regs + BLENDCON); + data &= ~BLENDCON_NEW_MASK; + if (var->transp.length > 4) + data |= BLENDCON_NEW_8BIT_ALPHA_VALUE; + else + data |= BLENDCON_NEW_4BIT_ALPHA_VALUE; + writel(data, sfb->regs + BLENDCON); + } + shadow_protect_win(win, 0); pm_runtime_put_sync(sfb->dev); @@ -1798,6 +1811,7 @@ static struct s3c_fb_driverdata s3c_fb_data_s5pc100 = { }, .has_prtcon = 1, + .has_blendcon = 1, .has_clksel = 1, }, .win[0] = &s3c_fb_data_s5p_wins[0], @@ -1829,6 +1843,7 @@ static struct s3c_fb_driverdata s3c_fb_data_s5pv210 = { }, .has_shadowcon = 1, + .has_blendcon = 1, .has_clksel = 1, }, .win[0] = &s3c_fb_data_s5p_wins[0], @@ -1860,6 +1875,7 @@ static struct s3c_fb_driverdata s3c_fb_data_exynos4 = { }, .has_shadowcon = 1, + .has_blendcon = 1, }, .win[0] = &s3c_fb_data_s5p_wins[0], .win[1] = &s3c_fb_data_s5p_wins[1], @@ -1923,6 +1939,8 @@ static struct s3c_fb_driverdata s3c_fb_data_s5p64x0 = { [1] = 0x2800, [2] = 0x2c00, }, + + .has_blendcon = 1, }, .win[0] = &s3c_fb_data_s5p_wins[0], .win[1] = &s3c_fb_data_s5p_wins[1], |