linux.git/drivers/usb/musb, branch v5.3.2

usb: musb: dsps: Use dev_get_drvdata()

2019-04-30T15:55:08+00:00

Using dev_get_drvdata directly.

Cc: Bin Liu 
Cc: Greg Kroah-Hartman 
Cc: linux-usb@vger.kernel.org
Signed-off-by: Kefeng Wang 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

usb: musb: jz4740: obtain USB PHY from devicetree

2019-04-30T15:55:08+00:00

Fall back to devm_usb_get_phy() if devicetree is not available.

Signed-off-by: Paul Cercueil 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

usb: musb: jz4740: Let the platform probe the PHY

2019-04-30T15:55:08+00:00

By registering a generic USB PHY from within the driver, we may shadow
the USB PHY registered by the platform, which might be different.

Signed-off-by: Paul Cercueil 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

soc: sunxi: Fix missing dependency on REGMAP_MMIO

2019-04-30T15:55:08+00:00

When enabling ARCH_SUNXI from allnoconfig, SUNXI_SRAM is enabled, but
not REGMAP_MMIO, so the kernel fails to link with an undefined reference
to __devm_regmap_init_mmio_clk. Select REGMAP_MMIO, as suggested in
drivers/base/regmap/Kconfig.

This creates the following dependency loop:

  drivers/of/Kconfig:68:                symbol OF_IRQ depends on IRQ_DOMAIN
  kernel/irq/Kconfig:63:                symbol IRQ_DOMAIN is selected by REGMAP
  drivers/base/regmap/Kconfig:7:        symbol REGMAP default is visible depending on REGMAP_MMIO
  drivers/base/regmap/Kconfig:39:       symbol REGMAP_MMIO is selected by SUNXI_SRAM
  drivers/soc/sunxi/Kconfig:4:          symbol SUNXI_SRAM is selected by USB_MUSB_SUNXI
  drivers/usb/musb/Kconfig:63:          symbol USB_MUSB_SUNXI depends on GENERIC_PHY
  drivers/phy/Kconfig:7:                symbol GENERIC_PHY is selected by PHY_BCM_NS_USB3
  drivers/phy/broadcom/Kconfig:29:      symbol PHY_BCM_NS_USB3 depends on MDIO_BUS
  drivers/net/phy/Kconfig:12:           symbol MDIO_BUS default is visible depending on PHYLIB
  drivers/net/phy/Kconfig:181:          symbol PHYLIB is selected by ARC_EMAC_CORE
  drivers/net/ethernet/arc/Kconfig:18:  symbol ARC_EMAC_CORE is selected by ARC_EMAC
  drivers/net/ethernet/arc/Kconfig:24:  symbol ARC_EMAC depends on OF_IRQ

To fix the circular dependency, make USB_MUSB_SUNXI select GENERIC_PHY
instead of depending on it. This matches the use of GENERIC_PHY by all
but two other drivers.

Cc:  # 4.19
Fixes: 5828729bebbb ("soc: sunxi: export a regmap for EMAC clock reg on A64")
Signed-off-by: Samuel Holland 
Acked-by: Maxime Ripard 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

usb: musb: omap2430: Add support for idling phy when musb is idle

2019-04-30T15:55:08+00:00

I noticed that musb is blocking core retention for omap4 unlike for
omap3. This is because for omap3 we have phy-twl4030-usb implement
it's own PM runtime to handle errata "VUSB3V1 VBUS overvoltage
debouncer not working when the PHY is powered down". That is done
in order to keep the USB PHY powered when phy-twl4030-usb is loaded.

For the other USB PHYs, we need to enable and disable the PHY based on
musb PM runtime. With the session bit based PM runtime for musb core,
we can now idle the USB PHY always when musb is idle.

Note that adding these calls will not affect the twl4030 driver
as it's phy functions will just query the PHY state without powering
the PHY on or off.

Signed-off-by: Tony Lindgren 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

usb: musb: Silence error about blacklisting hubs if !CONFIG_USB

2019-04-30T15:55:08+00:00

Some drivers, like jz4740-musb, don't depend on CONFIG_USB.

Signed-off-by: Paul Cercueil 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

USB: musb: mark expected switch fall-through

2019-02-13T18:40:20+00:00

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/usb/musb/musb_host.c: In function ‘musb_advance_schedule’:
drivers/usb/musb/musb_host.c:374:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (qh->mux == 1) {
       ^
drivers/usb/musb/musb_host.c:383:3: note: here
   case USB_ENDPOINT_XFER_ISOC:
   ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva 
Acked-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

usb: musb: Kconfig: Drop dependency on CONFIG_USB for jz4740

2019-02-12T07:54:44+00:00

The Kconfig entry previously depended on USB_OTG_BLACKLIST_HUB
unconditionally, which is an option that is only available when
CONFIG_USB is enabled. However, the USB IP in the JZ4740 SoC does not
support host mode, only gadget mode, so it makes sense to allow it to
build when CONFIG_USB is not set.

Signed-off-by: Paul Cercueil 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

usb: musb: Kconfig: Drop dependency on MACH_JZ4740 for jz4740

2019-02-12T07:54:44+00:00

Depending on MACH_JZ4740 prevent us from creating a generic kernel that
works on more than one MIPS board. Instead, we just depend on MIPS being
set.

Signed-off-by: Paul Cercueil 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman

usb: musb: jz4740: Add support for devicetree

2019-02-12T07:54:44+00:00

Add support for probing the driver from devicetree.

Signed-off-by: Paul Cercueil 
Signed-off-by: Bin Liu 
Signed-off-by: Greg Kroah-Hartman