diff options
| -rw-r--r-- | drivers/video/sm501fb.c | 5 | ||||
| -rw-r--r-- | include/linux/sm501-regs.h | 18 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c index d97edd7a6e4..1be95a68d69 100644 --- a/drivers/video/sm501fb.c +++ b/drivers/video/sm501fb.c @@ -777,6 +777,11 @@ static int sm501fb_set_par_pnl(struct fb_info *info) writel(control, fbi->regs + SM501_DC_PANEL_CONTROL); sm501fb_sync_regs(fbi); + /* ensure the panel interface is not tristated at this point */ + + sm501_modify_reg(fbi->dev->parent, SM501_SYSTEM_CONTROL, + 0, SM501_SYSCTRL_PANEL_TRISTATE); + /* power the panel up */ sm501fb_panel_power(fbi, 1); return 0; diff --git a/include/linux/sm501-regs.h b/include/linux/sm501-regs.h index 014e73b31fc..df7620dd8f3 100644 --- a/include/linux/sm501-regs.h +++ b/include/linux/sm501-regs.h @@ -15,6 +15,24 @@ /* config 1 */ #define SM501_SYSTEM_CONTROL (0x000000) + +#define SM501_SYSCTRL_PANEL_TRISTATE (1<<0) +#define SM501_SYSCTRL_MEM_TRISTATE (1<<1) +#define SM501_SYSCTRL_CRT_TRISTATE (1<<2) + +#define SM501_SYSCTRL_PCI_SLAVE_BURST_MASK (3<<4) +#define SM501_SYSCTRL_PCI_SLAVE_BURST_1 (0<<4) +#define SM501_SYSCTRL_PCI_SLAVE_BURST_2 (1<<4) +#define SM501_SYSCTRL_PCI_SLAVE_BURST_4 (2<<4) +#define SM501_SYSCTRL_PCI_SLAVE_BURST_8 (3<<4) + +#define SM501_SYSCTRL_PCI_CLOCK_RUN_EN (1<<6) +#define SM501_SYSCTRL_PCI_RETRY_DISABLE (1<<7) +#define SM501_SYSCTRL_PCI_SUBSYS_LOCK (1<<11) +#define SM501_SYSCTRL_PCI_BURST_READ_EN (1<<15) + +/* miscellaneous control */ + #define SM501_MISC_CONTROL (0x000004) #define SM501_MISC_BUS_SH (0x0) |