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When the device is idle it is possible to move it into the lowest MHI PM state (M3). In that mode, all MHI operations are suspended and the PCI device can be safely put into PCI D3 state. The device is then resumed from D3/M3 either because of host initiated MHI operation (e.g. buffer TX) or because the device (modem) has triggered wake-up via PME feature (e.g. on incoming data). Same procedures can be used for system wide or runtime suspend/resume. Signed-off-by: Loic Poulain <loic.poulain@linaro.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/1614971808-22156-6-git-send-email-loic.poulain@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> |
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| core | ||
| Kconfig | ||
| Makefile | ||
| pci_generic.c | ||