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broadsheetfb: add MMIO hooks

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Allow boards with GP-MMIO controllers to provide hooks to broadsheetfb in
order to offload cmd/data writes and data reads instead of relying only on
host based GPIO wiggling.

Signed-off-by: Jaya Kumar <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Krzysztof Helt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jaya Kumar 2010-03-10 15:21:41 -08:00 • committed by Linus Torvalds
commit 2afb189817
2 changed files with 107 additions and 20 deletions
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17
include/video/broadsheetfb.h
View file

@ -34,6 +34,10 @@
#define BS_DC 0x02
#define BS_WR 0x03
/* Broadsheet IO interface specific defines */
#define BS_MMIO_CMD 0x01
#define BS_MMIO_DATA 0x02
/* struct used by broadsheet. board specific stuff comes from *board */
struct broadsheetfb_par {
struct fb_info *info;
@ -49,12 +53,17 @@ struct broadsheet_board {
struct module *owner;
int (*init)(struct broadsheetfb_par *);
int (*wait_for_rdy)(struct broadsheetfb_par *);
void (*set_ctl)(struct broadsheetfb_par *, unsigned char, u8);
void (*set_hdb)(struct broadsheetfb_par *, u16);
u16 (*get_hdb)(struct broadsheetfb_par *);
void (*cleanup)(struct broadsheetfb_par *);
int (*get_panel_type)(void);
int (*setup_irq)(struct fb_info *);
};
/* Functions for boards that use GPIO */
void (*set_ctl)(struct broadsheetfb_par *, unsigned char, u8);
void (*set_hdb)(struct broadsheetfb_par *, u16);
u16 (*get_hdb)(struct broadsheetfb_par *);
/* Functions for boards that have specialized MMIO */
void (*mmio_write)(struct broadsheetfb_par *, int type, u16);
u16 (*mmio_read)(struct broadsheetfb_par *);
};
#endif