linux/include/soc
AngeloGioacchino Del Regno 60f3692b5f cpuidle: qcom_spm: Detach state machine from main SPM handling
In commit a871be6b8e ("cpuidle: Convert Qualcomm SPM driver to a generic
CPUidle driver") the SPM driver has been converted to a
generic CPUidle driver: that was mainly made to simplify the
driver and that was a great accomplishment;
Though, at that time, this driver was only applicable to ARM 32-bit SoCs,
lacking logic about the handling of newer generation SAW.

In preparation for the enablement of SPM features on AArch64/ARM64,
split the cpuidle-qcom-spm driver in two: the CPUIdle related
state machine (currently used only on ARM SoCs) stays there, while
the SPM communication handling lands back in soc/qcom/spm.c and
also making sure to not discard the simplifications that were
introduced in the aforementioned commit.

Since now the "two drivers" are split, the SCM dependency in the
main SPM handling is gone and for this reason it was also possible
to move the SPM initialization early: this will also make sure that
whenever the SAW CPUIdle driver is getting initialized, the SPM
driver will be ready to do the job.

Please note that the anticipation of the SPM initialization was
also done to optimize the boot times on platforms that have their
CPU/L2 idle states managed by other means (such as PSCI), while
needing SAW initialization for other purposes, like AVS control.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Tested-by: Stephan Gerhold <stephan@gerhold.net>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210729155609.608159-2-angelogioacchino.delregno@somainline.org
2021-09-21 17:41:48 -05:00
..
arc include/: replace HTTP links with HTTPS ones 2020-08-12 10:57:59 -07:00
at91 ARM: at91: ddr: add registers definitions for sama7g5's ddr 2021-07-19 14:32:12 +02:00
bcm2835 firmware: raspberrypi: Introduce devm_rpi_firmware_get() 2021-03-22 17:59:51 +01:00
canaan clk: Add RISC-V Canaan Kendryte K210 clock driver 2021-02-22 17:51:04 -08:00
fsl Revert "soc: fsl: qe: introduce qe_io{read,write}* wrappers" 2021-04-06 15:40:48 -05:00
imx ARM: imx: Initialize SoC ID on i.MX50 2021-05-13 15:42:21 +08:00
mediatek IOMMU Updates for Linux v5.12 2021-02-22 10:31:29 -08:00
microchip mbox: add polarfire soc system controller mailbox 2021-06-26 12:06:48 -05:00
mscc net: mscc: ocelot: transmit the VLAN filtering restrictions via extack 2021-08-20 14:39:52 +01:00
qcom cpuidle: qcom_spm: Detach state machine from main SPM handling 2021-09-21 17:41:48 -05:00
rockchip treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
sa1100 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sifive riscv: move sifive_l2_cache.h to include/soc 2020-01-12 10:12:44 -08:00
tegra soc/tegra: Changes for v5.15-rc1 2021-08-18 15:23:38 +02:00