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authorVolker Braun <vbraun@physics.upenn.edu>2006-07-30 03:04:18 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-31 13:28:45 -0700
commit994aad251acab32a5d40d4a9501dc3e736562b6d (patch)
tree4c816fa097d07b2c4a4f46d26023af94f9a26822 /drivers/video/aty/radeonfb.h
parent256154fbc31c25a8df4d398232acfa9d4892224c (diff)
[PATCH] radeonfb sleep fixes
Many IBM Thinkpad T4* models and some R* and X* with radeon video cards draw too much power when suspended to RAM, reducing drastically the battery lifetime. The solution is to enable suspend-to-D2 on these machines. They are whitelisted through their subsystem vendor/device ID. This fixes http://bugzilla.kernel.org/show_bug.cgi?id=3022 The patch introduces a framework to alter the pm_mode and reinit_func fields of the radeonfb_info structure based on a whitelist. This should facilitate future hardware-dependent workarounds. The workaround for the Samsung P35 that is already in the radeonfb code has been rewritten using this framework. The behavior can be overridden with module options: i) video=radeonfb:force_sleep=1 enable suspend-to-D2 also on non-whitelisted machines (useful for testing new notebook models), ii) video=radeonfb:ignore_devlist=1 Disable checking the whitelist and do not apply any workarounds. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/aty/radeonfb.h')
-rw-r--r--drivers/video/aty/radeonfb.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/video/aty/radeonfb.h b/drivers/video/aty/radeonfb.h
index 38657b2d10e..d5ff224a625 100644
--- a/drivers/video/aty/radeonfb.h
+++ b/drivers/video/aty/radeonfb.h
@@ -273,6 +273,8 @@ enum radeon_pm_mode {
radeon_pm_off = 0x00000002, /* Can resume from D3 cold */
};
+typedef void (*reinit_function_ptr)(struct radeonfb_info *rinfo);
+
struct radeonfb_info {
struct fb_info *info;
@@ -338,7 +340,7 @@ struct radeonfb_info {
int dynclk;
int no_schedule;
enum radeon_pm_mode pm_mode;
- void (*reinit_func)(struct radeonfb_info *rinfo);
+ reinit_function_ptr reinit_func;
/* Lock on register access */
spinlock_t reg_lock;
@@ -600,7 +602,7 @@ extern int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn, u8
/* PM Functions */
extern int radeonfb_pci_suspend(struct pci_dev *pdev, pm_message_t state);
extern int radeonfb_pci_resume(struct pci_dev *pdev);
-extern void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk);
+extern void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk, int ignore_devlist, int force_sleep);
extern void radeonfb_pm_exit(struct radeonfb_info *rinfo);
/* Monitor probe functions */