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Some cpuidle C-states supported on am335x and am437x, like C1 on am335x, require the use of the wkup_m3_ipc driver, and all C-states beyond C0 on both platforms require the use of the SRAM sleep code. Pass am33xx_do_sram_idle as the idle function to the platform pm core to be used by the cpuidle-arm driver when entering cpuidle states. am33xx_do_sram_idle will detect when the wkup_m3 is needed and ping it if necessary before calling the final cpu_suspend op which will execute the SRAM code to put the cpu into idle. Finally, use the begin_suspend and finish_suspend platform ops to be called at the beginning and end of suspend path to allow use of cpu_idle_poll_ctrl. This prevents races between cpuidle and suspend paths trying to communicate with the wkup_m3, as during suspend we only want it configured for entry to suspend. Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> |
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| amlogic | ||
| aspeed | ||
| atmel | ||
| bcm | ||
| dove | ||
| fsl | ||
| gemini | ||
| imx | ||
| ixp4xx | ||
| lantiq | ||
| mediatek | ||
| qcom | ||
| renesas | ||
| rockchip | ||
| samsung | ||
| sifive | ||
| sunxi | ||
| tegra | ||
| ti | ||
| ux500 | ||
| versatile | ||
| xilinx | ||
| zte | ||
| Kconfig | ||
| Makefile | ||