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Date: Sat, 13 Feb 2010 23:00:48 +0000
From: Florian Tobias Schandinat <FlorianSchandinat@....de>
To: linux-fbdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
JosephChan@....com.tw, ScottFang@...tech.com.cn,
Florian Tobias Schandinat <FlorianSchandinat@....de>
Subject: [PATCH 3/4] viafb: rework color setting
viafb: rework color setting
This is a rewritten version of viafb_setcolreg. The hardware register
writes were split up and moved to hw.c where they belong as this is
really low level stuff. It was made dual fb aware.
Furthermore viafb_setcmap was removed as the problem with 8bpp
originated from a bug in writing multiple color registers at once.
The removal of viafb_setcmap might introduce a small performance
regression but its certainly better to receive the correct result a
bit slower than a garbled picture fast. It should give us a working
8bpp mode and is more extensible than the old hardcoded code. No
other regressions are expected but as the hardware might be a bit
picky it might cause some regressions in 8bpp mode on some hardware
although I doubt that.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@....de>
---
drivers/video/via/hw.c | 28 ++++-
drivers/video/via/hw.h | 2 +
drivers/video/via/viafbdev.c | 237 +++++-------------------------------------
3 files changed, 51 insertions(+), 216 deletions(-)
diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c
index 47d9024..1823253 100644
--- a/drivers/video/via/hw.c
+++ b/drivers/video/via/hw.c
@@ -691,7 +691,7 @@ void viafb_set_primary_color_depth(u8 depth)
DEBUG_MSG(KERN_DEBUG "viafb_set_primary_color_depth(%d)\n", depth);
switch (depth) {
- case 6:
+ case 8:
value = 0x00;
break;
case 16:
@@ -715,7 +715,7 @@ void viafb_set_secondary_color_depth(u8 depth)
DEBUG_MSG(KERN_DEBUG "viafb_set_secondary_color_depth(%d)\n", depth);
switch (depth) {
- case 6:
+ case 8:
value = 0x00;
break;
case 16:
@@ -733,6 +733,27 @@ void viafb_set_secondary_color_depth(u8 depth)
viafb_write_reg_mask(0x67, VIACR, value, 0xC0);
}
+static void set_color_register(u8 index, u8 red, u8 green, u8 blue)
+{
+ outb(0xFF, 0x3C6); /* bit mask of palette */
+ outb(index, 0x3C8);
+ outb(red, 0x3C9);
+ outb(green, 0x3C9);
+ outb(blue, 0x3C9);
+}
+
+void viafb_set_primary_color_register(u8 index, u8 red, u8 green, u8 blue)
+{
+ viafb_write_reg_mask(0x1A, VIASR, 0x00, 0x01);
+ set_color_register(index, red, green, blue);
+}
+
+void viafb_set_secondary_color_register(u8 index, u8 red, u8 green, u8 blue)
+{
+ viafb_write_reg_mask(0x1A, VIASR, 0x01, 0x01);
+ set_color_register(index, red, green, blue);
+}
+
void viafb_set_output_path(int device, int set_iga, int output_interface)
{
switch (device) {
@@ -2210,8 +2231,7 @@ int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp,
outb(VPIT.SR[i - 1], VIASR + 1);
}
- viafb_write_reg_mask(0x15, VIASR, viafbinfo->fix.visual
- == FB_VISUAL_PSEUDOCOLOR ? 0x22 : 0xA2, 0xA2);
+ viafb_write_reg_mask(0x15, VIASR, 0xA2, 0xA2);
viafb_set_iga_path();
/* Write CRTC */
diff --git a/drivers/video/via/hw.h b/drivers/video/via/hw.h
index 691fbd2..12ef32d 100644
--- a/drivers/video/via/hw.h
+++ b/drivers/video/via/hw.h
@@ -914,6 +914,8 @@ void viafb_set_primary_address(u32 addr);
void viafb_set_secondary_address(u32 addr);
void viafb_set_primary_pitch(u32 pitch);
void viafb_set_secondary_pitch(u32 pitch);
+void viafb_set_primary_color_register(u8 index, u8 red, u8 green, u8 blue);
+void viafb_set_secondary_color_register(u8 index, u8 red, u8 green, u8 blue);
void viafb_get_fb_info(unsigned int *fb_base, unsigned int *fb_len);
#endif /* __HW_H__ */
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c
index 0fe748d..410de33 100644
--- a/drivers/video/via/viafbdev.c
+++ b/drivers/video/via/viafbdev.c
@@ -76,9 +76,9 @@ static void viafb_fill_var_color_info(struct fb_var_screeninfo *var, u8 depth)
var->red.offset = 0;
var->green.offset = 0;
var->blue.offset = 0;
- var->red.length = 6;
- var->green.length = 6;
- var->blue.length = 6;
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
break;
case 16:
var->bits_per_pixel = 16;
@@ -255,219 +255,33 @@ static int viafb_set_par(struct fb_info *info)
static int viafb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp, struct fb_info *info)
{
- u8 sr1a, sr1b, cr67, cr6a, rev = 0, shift = 10;
- unsigned cmap_entries = (info->var.bits_per_pixel == 8) ? 256 : 16;
- DEBUG_MSG(KERN_INFO "viafb_setcolreg!\n");
- if (regno >= cmap_entries)
- return 1;
- if (UNICHROME_CLE266 == viaparinfo->chip_info->gfx_chip_name) {
- /*
- * Read PCI bus 0,dev 0,function 0,index 0xF6 to get chip rev.
- */
- outl(0x80000000 | (0xf6 & ~3), (unsigned long)0xCF8);
- rev = (inl((unsigned long)0xCFC) >> ((0xf6 & 3) * 8)) & 0xff;
- }
- switch (info->var.bits_per_pixel) {
- case 8:
- outb(0x1A, 0x3C4);
- sr1a = inb(0x3C5);
- outb(0x1B, 0x3C4);
- sr1b = inb(0x3C5);
- outb(0x67, 0x3D4);
- cr67 = inb(0x3D5);
- outb(0x6A, 0x3D4);
- cr6a = inb(0x3D5);
-
- /* Map the 3C6/7/8/9 to the IGA2 */
- outb(0x1A, 0x3C4);
- outb(sr1a | 0x01, 0x3C5);
- /* Second Display Engine colck always on */
- outb(0x1B, 0x3C4);
- outb(sr1b | 0x80, 0x3C5);
- /* Second Display Color Depth 8 */
- outb(0x67, 0x3D4);
- outb(cr67 & 0x3F, 0x3D5);
- outb(0x6A, 0x3D4);
- /* Second Display Channel Reset CR6A[6]) */
- outb(cr6a & 0xBF, 0x3D5);
- /* Second Display Channel Enable CR6A[7] */
- outb(cr6a | 0x80, 0x3D5);
- /* Second Display Channel stop reset) */
- outb(cr6a | 0x40, 0x3D5);
-
- /* Bit mask of palette */
- outb(0xFF, 0x3c6);
- /* Write one register of IGA2 */
- outb(regno, 0x3C8);
- if (UNICHROME_CLE266 == viaparinfo->chip_info->gfx_chip_name &&
- rev >= 15) {
- shift = 8;
- viafb_write_reg_mask(CR6A, VIACR, BIT5, BIT5);
- viafb_write_reg_mask(SR15, VIASR, BIT7, BIT7);
- } else {
- shift = 10;
- viafb_write_reg_mask(CR6A, VIACR, 0, BIT5);
- viafb_write_reg_mask(SR15, VIASR, 0, BIT7);
- }
- outb(red >> shift, 0x3C9);
- outb(green >> shift, 0x3C9);
- outb(blue >> shift, 0x3C9);
-
- /* Map the 3C6/7/8/9 to the IGA1 */
- outb(0x1A, 0x3C4);
- outb(sr1a & 0xFE, 0x3C5);
- /* Bit mask of palette */
- outb(0xFF, 0x3c6);
- /* Write one register of IGA1 */
- outb(regno, 0x3C8);
- outb(red >> shift, 0x3C9);
- outb(green >> shift, 0x3C9);
- outb(blue >> shift, 0x3C9);
-
- outb(0x1A, 0x3C4);
- outb(sr1a, 0x3C5);
- outb(0x1B, 0x3C4);
- outb(sr1b, 0x3C5);
- outb(0x67, 0x3D4);
- outb(cr67, 0x3D5);
- outb(0x6A, 0x3D4);
- outb(cr6a, 0x3D5);
- break;
- case 16:
- ((u32 *) info->pseudo_palette)[regno] = (red & 0xF800) |
- ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
- break;
- case 32:
- ((u32 *) info->pseudo_palette)[regno] =
- ((transp & 0xFF00) << 16) |
- ((red & 0xFF00) << 8) |
- ((green & 0xFF00)) | ((blue & 0xFF00) >> 8);
- break;
- }
-
- return 0;
+ struct viafb_par *viapar = info->par;
+ u32 r, g, b;
-}
+ if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
+ if (regno > 255)
+ return -EINVAL;
-/*CALLED BY: fb_set_cmap */
-/* fb_set_var, pass 256 colors */
-/*CALLED BY: fb_set_cmap */
-/* fbcon_set_palette, pass 16 colors */
-static int viafb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
-{
- u32 len = cmap->len;
- u32 i;
- u16 *pred = cmap->red;
- u16 *pgreen = cmap->green;
- u16 *pblue = cmap->blue;
- u16 *ptransp = cmap->transp;
- u8 sr1a, sr1b, cr67, cr6a, rev = 0, shift = 10;
- if (len > 256)
- return 1;
- if (UNICHROME_CLE266 == viaparinfo->chip_info->gfx_chip_name) {
- /*
- * Read PCI bus 0, dev 0, function 0, index 0xF6 to get chip
- * rev.
- */
- outl(0x80000000 | (0xf6 & ~3), (unsigned long)0xCF8);
- rev = (inl((unsigned long)0xCFC) >> ((0xf6 & 3) * 8)) & 0xff;
- }
- switch (info->var.bits_per_pixel) {
- case 8:
- outb(0x1A, 0x3C4);
- sr1a = inb(0x3C5);
- outb(0x1B, 0x3C4);
- sr1b = inb(0x3C5);
- outb(0x67, 0x3D4);
- cr67 = inb(0x3D5);
- outb(0x6A, 0x3D4);
- cr6a = inb(0x3D5);
- /* Map the 3C6/7/8/9 to the IGA2 */
- outb(0x1A, 0x3C4);
- outb(sr1a | 0x01, 0x3C5);
- outb(0x1B, 0x3C4);
- /* Second Display Engine colck always on */
- outb(sr1b | 0x80, 0x3C5);
- outb(0x67, 0x3D4);
- /* Second Display Color Depth 8 */
- outb(cr67 & 0x3F, 0x3D5);
- outb(0x6A, 0x3D4);
- /* Second Display Channel Reset CR6A[6]) */
- outb(cr6a & 0xBF, 0x3D5);
- /* Second Display Channel Enable CR6A[7] */
- outb(cr6a | 0x80, 0x3D5);
- /* Second Display Channel stop reset) */
- outb(cr6a | 0xC0, 0x3D5);
-
- /* Bit mask of palette */
- outb(0xFF, 0x3c6);
- outb(0x00, 0x3C8);
- if (UNICHROME_CLE266 == viaparinfo->chip_info->gfx_chip_name &&
- rev >= 15) {
- shift = 8;
- viafb_write_reg_mask(CR6A, VIACR, BIT5, BIT5);
- viafb_write_reg_mask(SR15, VIASR, BIT7, BIT7);
- } else {
- shift = 10;
- viafb_write_reg_mask(CR6A, VIACR, 0, BIT5);
- viafb_write_reg_mask(SR15, VIASR, 0, BIT7);
- }
- for (i = 0; i < len; i++) {
- outb((*(pred + i)) >> shift, 0x3C9);
- outb((*(pgreen + i)) >> shift, 0x3C9);
- outb((*(pblue + i)) >> shift, 0x3C9);
- }
+ if (!viafb_dual_fb || viapar->iga_path == IGA1)
+ viafb_set_primary_color_register(regno, red >> 8,
+ green >> 8, blue >> 8);
- outb(0x1A, 0x3C4);
- /* Map the 3C6/7/8/9 to the IGA1 */
- outb(sr1a & 0xFE, 0x3C5);
- /* Bit mask of palette */
- outb(0xFF, 0x3c6);
- outb(0x00, 0x3C8);
- for (i = 0; i < len; i++) {
- outb((*(pred + i)) >> shift, 0x3C9);
- outb((*(pgreen + i)) >> shift, 0x3C9);
- outb((*(pblue + i)) >> shift, 0x3C9);
- }
+ if (!viafb_dual_fb || viapar->iga_path == IGA2)
+ viafb_set_secondary_color_register(regno, red >> 8,
+ green >> 8, blue >> 8);
+ } else {
+ if (regno > 15)
+ return -EINVAL;
- outb(0x1A, 0x3C4);
- outb(sr1a, 0x3C5);
- outb(0x1B, 0x3C4);
- outb(sr1b, 0x3C5);
- outb(0x67, 0x3D4);
- outb(cr67, 0x3D5);
- outb(0x6A, 0x3D4);
- outb(cr6a, 0x3D5);
- break;
- case 16:
- if (len > 17)
- return 0; /* Because static u32 pseudo_pal[17]; */
- for (i = 0; i < len; i++)
- ((u32 *) info->pseudo_palette)[i] =
- (*(pred + i) & 0xF800) |
- ((*(pgreen + i) & 0xFC00) >> 5) |
- ((*(pblue + i) & 0xF800) >> 11);
- break;
- case 32:
- if (len > 17)
- return 0;
- if (ptransp) {
- for (i = 0; i < len; i++)
- ((u32 *) info->pseudo_palette)[i] =
- ((*(ptransp + i) & 0xFF00) << 16) |
- ((*(pred + i) & 0xFF00) << 8) |
- ((*(pgreen + i) & 0xFF00)) |
- ((*(pblue + i) & 0xFF00) >> 8);
- } else {
- for (i = 0; i < len; i++)
- ((u32 *) info->pseudo_palette)[i] =
- 0x00000000 |
- ((*(pred + i) & 0xFF00) << 8) |
- ((*(pgreen + i) & 0xFF00)) |
- ((*(pblue + i) & 0xFF00) >> 8);
- }
- break;
+ r = (red >> (16 - info->var.red.length))
+ << info->var.red.offset;
+ b = (blue >> (16 - info->var.blue.length))
+ << info->var.blue.offset;
+ g = (green >> (16 - info->var.green.length))
+ << info->var.green.offset;
+ ((u32 *) info->pseudo_palette)[regno] = r | g | b;
}
+
return 0;
}
@@ -2286,7 +2100,6 @@ static struct fb_ops viafb_ops = {
.fb_cursor = viafb_cursor,
.fb_ioctl = viafb_ioctl,
.fb_sync = viafb_sync,
- .fb_setcmap = viafb_setcmap,
};
module_init(viafb_init);
--
1.6.3.2
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