diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-12-20 07:00:21 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-12-21 14:14:07 +0300 |
| commit | 0094f2cdcfb6f2132b2ea3b4e85e0f6899c8595b (patch) | |
| tree | 4e537bbfc3bcba2e3a0d93457009052190136078 /drivers/macintosh/via-pmu.c | |
| parent | 7ac5dde99eb9fefdb526973c600075b7c5703a86 (diff) | |
| download | linux-0094f2cdcfb6f2132b2ea3b4e85e0f6899c8595b.tar.xz | |
[POWERPC] Fix for via-pmu based backlight control
This fixes a few issues with via-pmu based backlight control.
First, it fixes a sign problem with the setup of the backlight
curve since the `range' value there -can- (and will) go negative.
Then, it reworks the interaction between this and the via-pmu sleep
code to properly restore backlight on wakeup from sleep.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'drivers/macintosh/via-pmu.c')
| -rw-r--r-- | drivers/macintosh/via-pmu.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index 7e77ac7e3705..82ec12e0edd2 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -1748,8 +1748,6 @@ restore_via_state(void) out_8(&via[IER], IER_SET | SR_INT | CB1_INT); } -extern void pmu_backlight_set_sleep(int sleep); - #define GRACKLE_PM (1<<7) #define GRACKLE_DOZE (1<<5) #define GRACKLE_NAP (1<<4) @@ -2160,11 +2158,6 @@ pmu_release(struct inode *inode, struct file *file) #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) static void pmac_suspend_disable_irqs(void) { -#ifdef CONFIG_PMAC_BACKLIGHT - /* Tell backlight code not to muck around with the chip anymore */ - pmu_backlight_set_sleep(1); -#endif - /* Call platform functions marked "on sleep" */ pmac_pfunc_i2c_suspend(); pmac_pfunc_base_suspend(); @@ -2208,11 +2201,6 @@ static int powerbook_sleep(suspend_state_t state) mdelay(100); -#ifdef CONFIG_PMAC_BACKLIGHT - /* Tell backlight code it can use the chip again */ - pmu_backlight_set_sleep(0); -#endif - return 0; } @@ -2457,10 +2445,15 @@ static int pmu_sys_suspend(struct sys_device *sysdev, pm_message_t state) if (state.event != PM_EVENT_SUSPEND || pmu_sys_suspended) return 0; - /* Suspend PMU event interrupts */ + /* Suspend PMU event interrupts */\ pmu_suspend(); - pmu_sys_suspended = 1; + +#ifdef CONFIG_PMAC_BACKLIGHT + /* Tell backlight code not to muck around with the chip anymore */ + pmu_backlight_set_sleep(1); +#endif + return 0; } @@ -2475,9 +2468,12 @@ static int pmu_sys_resume(struct sys_device *sysdev) pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); pmu_wait_complete(&req); +#ifdef CONFIG_PMAC_BACKLIGHT + /* Tell backlight code it can use the chip again */ + pmu_backlight_set_sleep(0); +#endif /* Resume PMU event interrupts */ pmu_resume(); - pmu_sys_suspended = 0; return 0; |