forked from Minki/linux
9178ba294b
The generic Linux framework to power off the machine is a function pointer called pm_power_off. The trick about this pointer is that device drivers can potentially implement it rather than board files. Today on powerpc we set pm_power_off to invoke our generic full machine power off logic which then calls ppc_md.power_off to invoke machine specific power off. However, when we want to add a power off GPIO via the "gpio-poweroff" driver, this card house falls apart. That driver only registers itself if pm_power_off is NULL to ensure it doesn't override board specific logic. However, since we always set pm_power_off to the generic power off logic (which will just not power off the machine if no ppc_md.power_off call is implemented), we can't implement power off via the generic GPIO power off driver. To fix this up, let's get rid of the ppc_md.power_off logic and just always use pm_power_off as was intended. Then individual drivers such as the GPIO power off driver can implement power off logic via that function pointer. With this patch set applied and a few patches on top of QEMU that implement a power off GPIO on the virt e500 machine, I can successfully turn off my virtual machine after halt. Signed-off-by: Alexander Graf <agraf@suse.de> [mpe: Squash into one patch and update changelog based on cover letter] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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| .. | ||
| spufs | ||
| axon_msi.c | ||
| beat_htab.c | ||
| beat_hvCall.S | ||
| beat_interrupt.c | ||
| beat_interrupt.h | ||
| beat_iommu.c | ||
| beat_spu_priv1.c | ||
| beat_syscall.h | ||
| beat_udbg.c | ||
| beat_wrapper.h | ||
| beat.c | ||
| beat.h | ||
| cbe_powerbutton.c | ||
| cbe_regs.c | ||
| cbe_thermal.c | ||
| celleb_pci.c | ||
| celleb_pci.h | ||
| celleb_scc_epci.c | ||
| celleb_scc_pciex.c | ||
| celleb_scc_sio.c | ||
| celleb_scc_uhc.c | ||
| celleb_scc.h | ||
| celleb_setup.c | ||
| cpufreq_spudemand.c | ||
| interrupt.c | ||
| interrupt.h | ||
| iommu.c | ||
| Kconfig | ||
| Makefile | ||
| pervasive.c | ||
| pervasive.h | ||
| pmu.c | ||
| qpace_setup.c | ||
| ras.c | ||
| ras.h | ||
| setup.c | ||
| smp.c | ||
| spider-pci.c | ||
| spider-pic.c | ||
| spu_base.c | ||
| spu_callbacks.c | ||
| spu_manage.c | ||
| spu_notify.c | ||
| spu_priv1_mmio.c | ||
| spu_priv1_mmio.h | ||
| spu_syscalls.c | ||