mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-24 12:44:11 +08:00
3f6d1767b1
The phy code was using implicit sequencing between the PHY driver and the UFS driver to implement certain hardware requirements. Specifically, the PHY reset register in the UFS controller needs to be deasserted before serdes start occurs in the PHY. Before this change, the code was doing this by utilizing the two phy callbacks, phy_init() and phy_poweron(), as "init step 1" and "init step 2", where the UFS driver would deassert reset between these two steps. This makes it challenging to power off the regulators in suspend, as regulators are initialized in init, not in poweron(), but only poweroff() is called during suspend, not exit(). For UFS, move the actual firing up of the PHY to phy_poweron() and phy_poweroff() callbacks, rather than init()/exit(). UFS calls phy_poweroff() during suspend, so now all clocks and regulators for the phy can be powered down during suspend. QMP is a little tricky because the PHY is also shared with PCIe and USB3, which have their own definitions for init() and poweron(). Rename the meaty functions to _enable() and _disable() to disentangle from the PHY core names, and then create two different ops structures: one for UFS and one for the other PHY types. In phy-qcom-ufs, remove the 'is_powered_on' and 'is_started' guards, as the generic PHY code does the reference counting. The 14/20nm-specific init functions get collapsed into the generic power_on() function, with the addition of a calibrate() callback specific to 14/20nm. Signed-off-by: Evan Green <evgreen@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> |
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| phy-ath79-usb.c | ||
| phy-qcom-apq8064-sata.c | ||
| phy-qcom-ipq806x-sata.c | ||
| phy-qcom-qmp.c | ||
| phy-qcom-qmp.h | ||
| phy-qcom-qusb2.c | ||
| phy-qcom-ufs-i.h | ||
| phy-qcom-ufs-qmp-14nm.c | ||
| phy-qcom-ufs-qmp-14nm.h | ||
| phy-qcom-ufs-qmp-20nm.c | ||
| phy-qcom-ufs-qmp-20nm.h | ||
| phy-qcom-ufs.c | ||
| phy-qcom-usb-hs.c | ||
| phy-qcom-usb-hsic.c | ||