Ãhel kenal pÃeval (pÃhapÃev, 23. jaanuar 2005, 16:54-0500), kirjutas
Volker Braun:
> Update: I compiled a kernel with the radeonfb-massive-update-of-pm-
> code.patch. Now I can successfully resume from acpi S3 again. The power
> drain issue remains, it still uses about 5W in the suspend state.
radeonfb power management is not enabled on PC platform.
I cooked up some code to turn D2 sleep mode on for selected PC-s and
managed to get my ThinkPad to work.
Try this patch on top of radeonfb-massive.
NB! The patch has a model specific triger, so You MUST add Your laptop
model number to the top of the drivers/video/aty/radeon_pm.c.
--
Antti Andreimann - Security Expert
Using Linux since 1993
Member of ELUG since 29.01.2000
--- linux-2.6.11-rc2-tank/drivers/video/aty/radeon_pm.c.orig 2005-01-23 14:55:57.000000000 +0200
+++ linux-2.6.11-rc2-tank/drivers/video/aty/radeon_pm.c 2005-01-23 21:53:47.000000000 +0200
@@ -25,8 +25,31 @@
#include <asm/pmac_feature.h>
#endif
+/* For detecting supported PC laptops */
+#ifdef CONFIG_X86
+#include <linux/dmi.h>
+#endif
+
#include "ati_ids.h"
+#ifdef CONFIG_X86
+/* This array holds a list of supported PC laptops.
+ * Currently only few IBM models are tested.
+ * If you want to experiment, use dmidecode to find out
+ * vendor and product codes for Your laptop.
+ */
+static struct dmi_system_id __devinitdata radeonfb_dmi_table[] = {
+ {
+ .ident = "IBM ThinkPad T41 (2373-2FG)",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "23732FG"),
+ },
+ },
+ { },
+};
+#endif
+
void radeon_pm_disable_dynamic_mode(struct radeonfb_info *rinfo)
{
u32 tmp;
@@ -2748,6 +2771,24 @@
OUTREG(TV_DAC_CNTL, INREG(TV_DAC_CNTL) | 0x07000000);
}
#endif /* defined(CONFIG_PM) && defined(CONFIG_PPC_OF) */
+
+/* The PM code also works on some PC laptops.
+ * Only a few models are actually tested so Your mileage may vary.
+ * We can do D2 on at least M7 and M9 on some IBM ThinkPad T41 models.
+ */
+#if defined(CONFIG_PM) && defined(CONFIG_X86)
+ if (dmi_check_system(radeonfb_dmi_table)) {
+ if (rinfo->is_mobility && rinfo->pm_reg &&
+ rinfo->family <= CHIP_FAMILY_RV250)
+ rinfo->pm_mode |= radeon_pm_d2;
+
+ /* Power down TV DAC, that saves a significant amount of power,
+ * we'll have something better once we actually have some TVOut
+ * support
+ */
+ OUTREG(TV_DAC_CNTL, INREG(TV_DAC_CNTL) | 0x07000000);
+ }
+#endif /* defined(CONFIG_PM) && defined(CONFIG_X86) */
}
void radeonfb_pm_exit(struct radeonfb_info *rinfo)
