Commit Graph

14 Commits

Author SHA1 Message Date
Yunzhi Li 135b3c4304 usb: dwc2: platform: add generic PHY framework support
Get PHY parameters from devicetree and power off usb PHY during
system suspend.

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12 12:13:26 -06:00
Fabio Estevam da9f3289c7 usb: dwc2: Fix build warning when CONFIG_PM_SLEEP=n
Building with bcm2835_defconfig, which has CONFIG_PM_SLEEP=n causes the
following build warning:

drivers/usb/dwc2/platform.c:227:12: warning: 'dwc2_suspend' defined but not used [-Wunused-function]
drivers/usb/dwc2/platform.c:237:12: warning: 'dwc2_resume' defined but not used [-Wunused-function]

Annotate these functions with '__maybe_unused' to prevent the warnings.

Reported-by: Olof's autobuilder <build@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-25 08:47:04 -06:00
Marek Szyprowski 7ad8096edf usb: dwc2: gadget: add mutex to serialize init/deinit calls
This patch adds mutex, which protects initialization and
deinitialization procedures against suspend/resume methods. This mutex
will be needed by the updated suspend/resume calls, which tracks gadget
state.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-21 09:07:38 -06:00
Dinh Nguyen f5500ecc90 usb: dwc2: move usb_disabled() call to host driver only
Since platform.c will get built for both Host and Gadget, if we leave the
usb_disabled() call in platform.c, it results in the following build error
when (!USB && USB_GADGET) condition is met.

ERROR: "usb_disabled" [drivers/usb/dwc2/dwc2_platform.ko] undefined!

Since usb_disabled() is mostly used to disable USB host functionality, move
the call the host portion for the DWC2 driver.

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14 15:00:03 -06:00
Dinh Nguyen db8178c33d usb: dwc2: Update common interrupt handler to call gadget interrupt handler
Make dwc2_handle_common_intr call the gadget interrupt function when operating
in peripheral mode. Remove the spinlock functions in s3c_hsotg_irq as
dwc2_handle_common_intr() already has the spinlocks.

Move the registeration of the IRQ to common code for platform and PCI.

Remove duplicate interrupt conditions that was in gadget, as those are handled
by dwc2 common interrupt handler.

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14 14:59:48 -06:00
Dinh Nguyen bcc06078ba usb: dwc2: convert to use dev_pm_ops API
Update suspend/resume to use dev_pm_ops API.

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14 14:59:38 -06:00
Dinh Nguyen 117777b2c3 usb: dwc2: Move gadget probe function into platform code
This patch will aggregate the probing of gadget/hcd driver into platform.c.
The gadget probe funtion is converted into gadget_init that is now only
responsible for gadget only initialization. All the gadget resources are now
handled by platform.c

Since the host workqueue will not get initialized if the driver is configured
for peripheral mode only. Thus we need to check for wq_otg before calling
queue_work().

Also, we move spin_lock_init to common location for both host and gadget that
is either in platform.c or pci.c.

We also move suspend/resume code to common platform code.

Lastly, move the "samsung,s3c6400-hsotg" binding into dwc2_of_match_table.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14 14:59:32 -06:00
Robert Baldyga 87df8ac3d2 Revert "usb: dwc2: move "samsung,s3c6400-hsotg" into common platform"
This reverts commit 8df438571c.

This patch breaks building dwc2 driver in gadget mode at samsung
platforms.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-11 13:48:43 -07:00
Dinh Nguyen 8df438571c usb: dwc2: move "samsung,s3c6400-hsotg" into common platform
Move the "samsung,s3c6400-hsotg" binding as the probe function in the gadget
driver will get removed when the dual-role driver is implemented.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-08 15:47:04 -07:00
Kever Yang c0155b9d5e usb: dwc2: add 'mode' which based on Kconfig select or dts setting
According to the "dr_mode", the otg controller can work as
device role and host role. Some boards always want to use host mode
and some other boards want to use gadget mode. We use the dts setting
to set dwc2's mode, rather than fixing it to whatever hardware says.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Tested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-08 15:43:28 -07:00
Kever Yang 9508314655 usb: dwc2: add compatible data for rockchip soc
This patch add compatible data for dwc2 controller found on
rk3066, rk3188 and rk3288 processors from rockchip.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-08 15:41:14 -07:00
Dinh Nguyen 8b3e233e81 usb: dwc2: Disable descriptor dma mode by default
Even though the IP supports Descriptor DMA mode, it does not support SPLIT
transactions in this mode. So the driver, in its currently form, will not
support LS/FS devices when connected to a HS Hub if Descriptor DMA mode is
enabled.

So we should just default to disable descriptor dma mode.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 15:42:41 -07:00
Andre Heider 861e0f5bae usb: dwc2: bail out early when booting with "nousb"
Add usb_disabled() check to prevent kernel oops when booting with "nousb"
in the cmdline:

Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at bus_add_device+0xe0/0x18c
LR is at device_add_groups+0x1c/0x20
...
[<c02191c0>] (bus_add_device) from [<c0217130>] (device_add+0x41c/0x538)
[<c0217130>] (device_add) from [<c023b1d4>] (usb_new_device+0x270/0x35c)
[<c023b1d4>] (usb_new_device) from [<c0241174>] (usb_add_hcd+0x4fc/0x760)
[<c0241174>] (usb_add_hcd) from [<c0254ce0>] (dwc2_hcd_init+0x434/0x510)
[<c0254ce0>] (dwc2_hcd_init) from [<c02594f4>] (dwc2_driver_probe+0x130/0x170)
[<c02594f4>] (dwc2_driver_probe) from [<c021bbd0>] (platform_drv_probe+0x28/0x58)

Signed-off-by: Andre Heider <a.heider@gmail.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-04 12:59:14 -08:00
Paul Zimmerman 197ba5f406 Move DWC2 driver out of staging
The DWC2 driver should now be in good enough shape to move out of
staging. I have stress tested it overnight on RPI running mass
storage and Ethernet transfers in parallel, and for several days
on our proprietary PCI-based platform.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-13 14:44:01 -08:00