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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.h
parent5016af53ebbd1450c2656c94dfbd1dad15c19f60 (diff)
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.h')
-rw-r--r--drivers/video/via/hw.h33
1 files changed, 3 insertions, 30 deletions
diff --git a/drivers/video/via/hw.h b/drivers/video/via/hw.h
index cf1dfd5c7fd..817033d2d3b 100644
--- a/drivers/video/via/hw.h
+++ b/drivers/video/via/hw.h
@@ -147,14 +147,8 @@ is reserved, so it may have problem to set 1600x1200 on IGA2. */
/* location: {CR5F,0,4} */
#define IGA2_VER_SYNC_END_REG_NUM 1
-/* Define Offset and Fetch Count Register*/
+/* Define Fetch Count Register*/
-/* location: {CR13,0,7},{CR35,5,7} */
-#define IGA1_OFFSET_REG_NUM 2
-/* 8 bytes alignment. */
-#define IGA1_OFFSER_ALIGN_BYTE 8
-/* x: H resolution, y: color depth */
-#define IGA1_OFFSET_FORMULA(x, y) ((x*y)/IGA1_OFFSER_ALIGN_BYTE)
/* location: {SR1C,0,7},{SR1D,0,1} */
#define IGA1_FETCH_COUNT_REG_NUM 2
/* 16 bytes alignment. */
@@ -164,11 +158,6 @@ is reserved, so it may have problem to set 1600x1200 on IGA2. */
#define IGA1_FETCH_COUNT_FORMULA(x, y) \
(((x*y)/IGA1_FETCH_COUNT_ALIGN_BYTE) + IGA1_FETCH_COUNT_PATCH_VALUE)
-/* location: {CR66,0,7},{CR67,0,1} */
-#define IGA2_OFFSET_REG_NUM 2
-#define IGA2_OFFSET_ALIGN_BYTE 8
-/* x: H resolution, y: color depth */
-#define IGA2_OFFSET_FORMULA(x, y) ((x*y)/IGA2_OFFSET_ALIGN_BYTE)
/* location: {CR65,0,7},{CR67,2,3} */
#define IGA2_FETCH_COUNT_REG_NUM 2
#define IGA2_FETCH_COUNT_ALIGN_BYTE 16
@@ -617,23 +606,6 @@ struct iga2_ver_sync_end {
struct io_register reg[IGA2_VER_SYNC_END_REG_NUM];
};
-/* IGA1 Offset Register */
-struct iga1_offset {
- int reg_num;
- struct io_register reg[IGA1_OFFSET_REG_NUM];
-};
-
-/* IGA2 Offset Register */
-struct iga2_offset {
- int reg_num;
- struct io_register reg[IGA2_OFFSET_REG_NUM];
-};
-
-struct offset {
- struct iga1_offset iga1_offset_reg;
- struct iga2_offset iga2_offset_reg;
-};
-
/* IGA1 Fetch Count Register */
struct iga1_fetch_count {
int reg_num;
@@ -904,7 +876,6 @@ void viafb_write_reg(u8 index, u16 io_port, u8 data);
u8 viafb_read_reg(int io_port, u8 index);
void viafb_lock_crt(void);
void viafb_unlock_crt(void);
-void viafb_load_offset_reg(int h_addr, int bpp_byte, int set_iga);
void viafb_load_fetch_count_reg(int h_addr, int bpp_byte, int set_iga);
void viafb_write_regx(struct io_reg RegTable[], int ItemNum);
struct VideoModeTable *viafb_get_modetbl_pointer(int Index);
@@ -928,6 +899,8 @@ void viafb_get_mmio_info(unsigned long *mmio_base, u32 *mmio_len);
void viafb_set_iga_path(void);
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_get_fb_info(unsigned int *fb_base, unsigned int *fb_len);
#endif /* __HW_H__ */