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linux-next/drivers/mailbox
Anson Huang 676f23eab7 mailbox: imx: Support runtime PM
Some power hungry sub-systems like VPU has its own MUs which also
use mailbox driver, current mailbox driver uses platform driver
model and MU's power will be ON after driver probed and left ON
there, it may cause the whole sub-system can NOT enter lower power
mode, take VPU driver for example, it has runtime PM support, but
due to its MU always ON, the VPU sub-system will be always ON and
consume many power during kernel idle.

To save power in kernel idle, mailbox driver needs to support
runtime PM in order to power off MU when it is unused. However,
the runtime suspend/resume can ONLY be implemented in mailbox's
.shutdown/.startup callback, so its consumer needs to call
mbox_request_channel()/mbox_free_channel() in consumer driver's
runtime PM callback, then the MU's power will be ON/OFF along with
consumer's runtime PM status.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2020-05-30 16:07:19 -05:00
..
arm_mhu.c mailbox: arm_mhu: reorder header inclusion and drop unneeded ones 2019-07-10 23:08:43 -05:00
armada-37xx-rwtm-mailbox.c mailbox:armada-37xx-rwtm:remove duplicate print in armada_37xx_mbox_probe() 2020-03-19 23:00:32 -05:00
bcm2835-mailbox.c mailbox: bcm2835: Use device-managed registration API 2018-12-21 16:49:25 -06:00
bcm-flexrm-mailbox.c maillbox: bcm-flexrm-mailbox: handle cmpl_pool dma allocation failure 2020-03-19 23:00:32 -05:00
bcm-pdc-mailbox.c mailbox: bcm-pdc: Use scnprintf() for avoiding potential buffer overflow 2020-03-19 23:00:32 -05:00
hi3660-mailbox.c mailbox: hi3660: Use device-managed registration API 2018-12-21 16:49:25 -06:00
hi6220-mailbox.c mailbox: no need to set .owner platform_driver_register 2019-11-26 22:45:15 -06:00
imx-mailbox.c mailbox: imx: Support runtime PM 2020-05-30 16:07:19 -05:00
Kconfig mailbox: sun6i-msgbox: Add a new mailbox driver 2020-03-19 23:00:32 -05:00
mailbox-altera.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
mailbox-sti.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mailbox-test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mailbox-xgene-slimpro.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
mailbox.c mailbox: handle failed named mailbox channel request 2019-07-11 10:19:00 -05:00
mailbox.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
Makefile mailbox: sun6i-msgbox: Add a new mailbox driver 2020-03-19 23:00:32 -05:00
mtk-cmdq-mailbox.c mailbox: mediatek: remove implementation related to atomic_exec 2020-03-19 23:00:32 -05:00
omap-mailbox.c mailbox/omap: Handle if CONFIG_PM is disabled 2019-11-26 22:44:53 -06:00
pcc.c mailbox: pcc: make pcc_mbox_driver static 2020-05-30 16:06:22 -05:00
pl320-ipc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
platform_mhu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
qcom-apcs-ipc-mailbox.c mailbox: qcom-apcs: fix max_register value 2019-09-17 00:54:29 -05:00
rockchip-mailbox.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
stm32-ipcc.c mailbox: stm32-ipcc: Update wakeup management 2019-11-30 23:08:59 -06:00
sun6i-msgbox.c mailbox: sun6i-msgbox: Add a new mailbox driver 2020-03-19 23:00:32 -05:00
tegra-hsp.c mailbox: tegra: Fix superfluous IRQ error message 2019-11-12 15:09:19 +01:00
ti-msgmgr.c mailbox: ti-msgmgr: Use device-managed registration API 2018-12-21 16:49:26 -06:00
zynqmp-ipi-mailbox.c mailbox: ZynqMP IPI mailbox controller 2019-03-06 20:34:20 -06:00