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authorFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2009-09-22 16:47:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 07:39:53 -0700
commit2d6e8851f608bd0c811f2df83eeff4ad8631e723 (patch)
tree76aad6e6e48a294d742acc4a0751e5d8ab86bf50 /drivers/video/via/hw.c
parent5016af53ebbd1450c2656c94dfbd1dad15c19f60 (diff)
downloadlinux-2d6e8851f608bd0c811f2df83eeff4ad8631e723.tar.bz2
viafb: improve pitch handling
Split the pitch handling up and replaces the calculation from virtual xres and bpp with fix.line_length which already contains the pitch and does not add any constrains for the virtual resolution. Also add a bit to the second pitch which the documentation mentions but which was ignored by the driver. Although it is a bit unclear what the right pitch for some LCD modes is this patch should have no negative runtime impact. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Scott Fang <ScottFang@viatech.com.cn> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Harald Welte <laforge@gnumonks.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/via/hw.c')
-rw-r--r--drivers/video/via/hw.c73
1 files changed, 23 insertions, 50 deletions
diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c
index 86050e79b892..4910561a9d34 100644
--- a/drivers/video/via/hw.c
+++ b/drivers/video/via/hw.c
@@ -36,13 +36,6 @@ static const struct pci_device_id_info pciidlist[] = {
{0, 0, 0}
};
-struct offset offset_reg = {
- /* IGA1 Offset Register */
- {IGA1_OFFSET_REG_NUM, {{CR13, 0, 7}, {CR35, 5, 7} } },
- /* IGA2 Offset Register */
- {IGA2_OFFSET_REG_NUM, {{CR66, 0, 7}, {CR67, 0, 1} } }
-};
-
static struct pll_map pll_value[] = {
{CLK_25_175M, CLE266_PLL_25_175M, K800_PLL_25_175M, CX700_25_175M},
{CLK_29_581M, CLE266_PLL_29_581M, K800_PLL_29_581M, CX700_29_581M},
@@ -648,6 +641,26 @@ void viafb_set_secondary_address(u32 addr)
viafb_write_reg_mask(CRA3, VIACR, (addr >> 26) & 0x07, 0x07);
}
+void viafb_set_primary_pitch(u32 pitch)
+{
+ DEBUG_MSG(KERN_DEBUG "viafb_set_primary_pitch(0x%08X)\n", pitch);
+ /* spec does not say that first adapter skips 3 bits but old
+ * code did it and seems to be reasonable in analogy to 2nd adapter
+ */
+ pitch = pitch >> 3;
+ viafb_write_reg(0x13, VIACR, pitch & 0xFF);
+ viafb_write_reg_mask(0x35, VIACR, (pitch >> (8 - 5)) & 0xE0, 0xE0);
+}
+
+void viafb_set_secondary_pitch(u32 pitch)
+{
+ DEBUG_MSG(KERN_DEBUG "viafb_set_secondary_pitch(0x%08X)\n", pitch);
+ pitch = pitch >> 3;
+ viafb_write_reg(0x66, VIACR, pitch & 0xFF);
+ viafb_write_reg_mask(0x67, VIACR, (pitch >> 8) & 0x03, 0x03);
+ viafb_write_reg_mask(0x71, VIACR, (pitch >> (10 - 7)) & 0x80, 0x80);
+}
+
void viafb_set_output_path(int device, int set_iga, int output_interface)
{
switch (device) {
@@ -1076,30 +1089,6 @@ void viafb_write_regx(struct io_reg RegTable[], int ItemNum)
}
}
-void viafb_load_offset_reg(int h_addr, int bpp_byte, int set_iga)
-{
- int reg_value;
- int viafb_load_reg_num;
- struct io_register *reg;
-
- switch (set_iga) {
- case IGA1_IGA2:
- case IGA1:
- reg_value = IGA1_OFFSET_FORMULA(h_addr, bpp_byte);
- viafb_load_reg_num = offset_reg.iga1_offset_reg.reg_num;
- reg = offset_reg.iga1_offset_reg.reg;
- viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
- if (set_iga == IGA1)
- break;
- case IGA2:
- reg_value = IGA2_OFFSET_FORMULA(h_addr, bpp_byte);
- viafb_load_reg_num = offset_reg.iga2_offset_reg.reg_num;
- reg = offset_reg.iga2_offset_reg.reg;
- viafb_load_reg(reg_value, viafb_load_reg_num, reg, VIACR);
- break;
- }
-}
-
void viafb_load_fetch_count_reg(int h_addr, int bpp_byte, int set_iga)
{
int reg_value;
@@ -1869,7 +1858,6 @@ void viafb_fill_crtc_timing(struct crt_mode_table *crt_table,
load_fix_bit_crtc_reg();
viafb_lock_crt();
viafb_write_reg_mask(CR17, VIACR, 0x80, BIT7);
- viafb_load_offset_reg(h_addr, bpp_byte, set_iga);
viafb_load_fetch_count_reg(h_addr, bpp_byte, set_iga);
/* load FIFO */
@@ -2322,6 +2310,9 @@ int viafb_setmode(int vmode_index, int hor_res, int ver_res, int video_bpp,
}
}
+ viafb_set_primary_pitch(viafbinfo->fix.line_length);
+ viafb_set_secondary_pitch(viafb_dual_fb ? viafbinfo1->fix.line_length
+ : viafbinfo->fix.line_length);
/* Update Refresh Rate Setting */
/* Clear On Screen */
@@ -2738,24 +2729,6 @@ void viafb_set_dpa_gfx(int output_interface, struct GFX_DPA_SETTING\
}
}
-void viafb_memory_pitch_patch(struct fb_info *info)
-{
- if (info->var.xres != info->var.xres_virtual) {
- viafb_load_offset_reg(info->var.xres_virtual,
- info->var.bits_per_pixel >> 3, IGA1);
-
- if (viafb_SAMM_ON) {
- viafb_load_offset_reg(viafb_second_virtual_xres,
- viafb_bpp1 >> 3,
- IGA2);
- } else {
- viafb_load_offset_reg(info->var.xres_virtual,
- info->var.bits_per_pixel >> 3, IGA2);
- }
-
- }
-}
-
/*According var's xres, yres fill var's other timing information*/
void viafb_fill_var_timing_info(struct fb_var_screeninfo *var, int refresh,
int mode_index)