[RESEND PATCH 0/9] Init runtime PM support for dw_mmc
jh80.chung at samsung.com
Sun Oct 9 19:10:35 PDT 2016
On 10/09/2016 10:58 PM, Shawn Lin wrote:
> Hi Jaehoon and Ulf,
> This patch is gonna support runtime PM for dw_mmc.
> It could support to disable ciu_clk by default and disable
> biu_clk if the devices are non-removeable, or removeable
> with gpio-base card detect.
> Then I remove the system PM since the runtime PM actually
> does the same thing as it. So I help migrate the dw_mmc variant
> drivers to use runtime PM pairs and pm_runtime_force_*. Note
> that I only enable runtime PM for dw_mmc-rockchip as I will
> leave the decision to the owners of the corresponding drivers.
> I just tested it on my RK3288 platform with linux-next to make
> the runtime PM and system PM work fine for my emmc, sd card and
> sdio. But I don't have hardware to help test other variant drivers.
> But in theory it should work fine as I mentioned that the runtime
> PM does the same thing as system PM except for disabling ciu_clk
> aggressively which should not be related to the variant hosts.
I'm testing this patchset with exynos SoCs. If it's possible to use other SoCs,
then I think your patches will be changed more clear than now.
e.g) Not need to define the each driver's runtime_pm_suspend/resume function.
> As you could see that I just extend the slot-gpio a bit, so the
> ideal way is Ulf could pick them up with Jaehoon's ack. :)
> Shawn Lin (9):
> mmc: dw_mmc: add runtime PM callback
> mmc: dw_mmc-rockchip: add runtime PM support
> mmc: core: expose the capability of gpio card detect
> mmc: dw_mmc-rockchip: disable biu clk if possible
> mmc: dw_mmc-k3: deploay runtime PM facilities
> mmc: dw_mmc-exynos: deploay runtime PM facilities
> mmc: dw_mmc-pci: deploay runtime PM facilities
> mmc: dw_mmc-pltfm: deploay runtime PM facilities
> mmc: dw_mmc: remove system PM callback
> drivers/mmc/core/slot-gpio.c | 8 +++++
> drivers/mmc/host/dw_mmc-exynos.c | 21 ++++++-----
> drivers/mmc/host/dw_mmc-k3.c | 37 +++++++++----------
> drivers/mmc/host/dw_mmc-pci.c | 25 ++++++++-----
> drivers/mmc/host/dw_mmc-pltfm.c | 26 ++++++++------
> drivers/mmc/host/dw_mmc-rockchip.c | 73 ++++++++++++++++++++++++++++++++++++--
> drivers/mmc/host/dw_mmc.c | 24 ++++++-------
> drivers/mmc/host/dw_mmc.h | 6 ++--
> include/linux/mmc/slot-gpio.h | 1 +
> 9 files changed, 152 insertions(+), 69 deletions(-)
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