forked from luck/tmp_suning_uos_patched
6a9ee8af34
Many new laptops now come with 2 gpus, one to be used for low power
modes and one for gaming/on-ac applications. These GPUs are typically
wired to the laptop panel and VGA ports via a multiplexer unit which
is controlled via ACPI methods.
4 combinations of systems typically exist - with 2 ACPI methods.
Intel/ATI - Lenovo W500/T500 - use ATPX ACPI method
ATI/ATI - some ASUS - use ATPX ACPI Method
Intel/Nvidia - - use _DSM ACPI method
Nvidia/Nvidia - - use _DSM ACPI method.
TODO:
This patch adds support for the ATPX method and initial bits
for the _DSM methods that need to written by someone with
access to the hardware.
Add a proper non-debugfs interface - need to get some proper
testing first.
v2: add power up/down support for both devices
on W500 puts i915/radeon into D3 and cuts power to radeon.
v3: redo probing methods, no DMI list, drm devices call to
register with switcheroo, it tries to find an ATPX method on
any device and once there is two devices + ATPX it inits the
switcher.
v4: ATPX msg handling using buffers - should work on more machines
v5: rearchitect after more mjg59 discussion - move ATPX handling to
radeon driver.
v6: add file headers + initial nouveau bits (to be filled out).
v7: merge delayed switcher code.
v8: avoid suspend/resume of gpu that is off
v9: rearchitect - mjg59 is always right. - move all ATPX code to
radeon, should allow simpler DSM also proper ATRM handling
v10: add ATRM support for radeon BIOS, add mutex to lock vgasr_priv
v11: fix bug in resuming Intel for 2nd time.
v12: start fixing up nvidia code blindly.
v13: blindly guess at finishing nvidia code
v14: remove radeon audio hacks - fix up intel resume more like upstream
v15: clean up printks + remove unnecessary igd/dis pointers
mount debugfs
/sys/kernel/debug/vgaswitcheroo/switch - should exist if ATPX detected
+ 2 cards.
DIS - immediate change to discrete
IGD - immediate change to IGD
DDIS - delayed change to discrete
DIGD - delayed change to IGD
ON - turn on not in use
OFF - turn off not in use
Tested on W500 (Intel/ATI) and T500 (Intel/ATI)
Signed-off-by: Dave Airlie <airlied@redhat.com>
|
||
|---|---|---|
| .. | ||
| aty | ||
| backlight | ||
| console | ||
| display | ||
| geode | ||
| i810 | ||
| intelfb | ||
| kyro | ||
| logo | ||
| matrox | ||
| mb862xx | ||
| mbx | ||
| msm | ||
| nvidia | ||
| omap | ||
| omap2 | ||
| pnx4008 | ||
| riva | ||
| savage | ||
| sis | ||
| vermilion | ||
| via | ||
| 68328fb.c | ||
| acornfb.c | ||
| acornfb.h | ||
| amba-clcd.c | ||
| amifb.c | ||
| arcfb.c | ||
| arkfb.c | ||
| asiliantfb.c | ||
| atafb_iplan2p2.c | ||
| atafb_iplan2p4.c | ||
| atafb_iplan2p8.c | ||
| atafb_mfb.c | ||
| atafb_utils.h | ||
| atafb.c | ||
| atafb.h | ||
| atmel_lcdfb.c | ||
| au1100fb.c | ||
| au1100fb.h | ||
| au1200fb.c | ||
| au1200fb.h | ||
| bf54x-lq043fb.c | ||
| bfin-lq035q1-fb.c | ||
| bfin-t350mcqb-fb.c | ||
| broadsheetfb.c | ||
| bt431.h | ||
| bt455.h | ||
| bw2.c | ||
| c2p_core.h | ||
| c2p_iplan2.c | ||
| c2p_planar.c | ||
| c2p.h | ||
| carminefb_regs.h | ||
| carminefb.c | ||
| carminefb.h | ||
| cfbcopyarea.c | ||
| cfbfillrect.c | ||
| cfbimgblt.c | ||
| cg3.c | ||
| cg6.c | ||
| cg14.c | ||
| chipsfb.c | ||
| cirrusfb.c | ||
| clps711xfb.c | ||
| cobalt_lcdfb.c | ||
| controlfb.c | ||
| controlfb.h | ||
| cyber2000fb.c | ||
| cyber2000fb.h | ||
| da8xx-fb.c | ||
| dnfb.c | ||
| edid.h | ||
| efifb.c | ||
| ep93xx-fb.c | ||
| epson1355fb.c | ||
| fb_ddc.c | ||
| fb_defio.c | ||
| fb_draw.h | ||
| fb_notify.c | ||
| fb_sys_fops.c | ||
| fbcmap.c | ||
| fbcvt.c | ||
| fbmem.c | ||
| fbmon.c | ||
| fbsysfs.c | ||
| ffb.c | ||
| fm2fb.c | ||
| fsl-diu-fb.c | ||
| fsl-diu-fb.h | ||
| g364fb.c | ||
| gbefb.c | ||
| gxt4500.c | ||
| hecubafb.c | ||
| hgafb.c | ||
| hitfb.c | ||
| hpfb.c | ||
| igafb.c | ||
| imsttfb.c | ||
| imxfb.c | ||
| Kconfig | ||
| leo.c | ||
| macfb.c | ||
| macmodes.c | ||
| macmodes.h | ||
| Makefile | ||
| maxinefb.c | ||
| metronomefb.c | ||
| modedb.c | ||
| mx3fb.c | ||
| n411.c | ||
| neofb.c | ||
| offb.c | ||
| output.c | ||
| p9100.c | ||
| platinumfb.c | ||
| platinumfb.h | ||
| pm2fb.c | ||
| pm3fb.c | ||
| pmag-aa-fb.c | ||
| pmag-ba-fb.c | ||
| pmagb-b-fb.c | ||
| ps3fb.c | ||
| pvr2fb.c | ||
| pxa168fb.c | ||
| pxa168fb.h | ||
| pxafb.c | ||
| pxafb.h | ||
| q40fb.c | ||
| s1d13xxxfb.c | ||
| s3c2410fb.c | ||
| s3c2410fb.h | ||
| s3c-fb.c | ||
| s3fb.c | ||
| sa1100fb.c | ||
| sa1100fb.h | ||
| sbuslib.c | ||
| sbuslib.h | ||
| sgivwfb.c | ||
| sh7760fb.c | ||
| sh_mobile_lcdcfb.c | ||
| skeletonfb.c | ||
| sm501fb.c | ||
| sstfb.c | ||
| sticore.h | ||
| stifb.c | ||
| sunxvr500.c | ||
| sunxvr2500.c | ||
| svgalib.c | ||
| syscopyarea.c | ||
| sysfillrect.c | ||
| sysimgblt.c | ||
| tcx.c | ||
| tdfxfb.c | ||
| tgafb.c | ||
| tmiofb.c | ||
| tridentfb.c | ||
| uvesafb.c | ||
| valkyriefb.c | ||
| valkyriefb.h | ||
| vesafb.c | ||
| vfb.c | ||
| vga16fb.c | ||
| vgastate.c | ||
| vt8623fb.c | ||
| w100fb.c | ||
| w100fb.h | ||
| xen-fbfront.c | ||
| xilinxfb.c | ||