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linux/drivers/usb/gadget/udc
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Yoshihiro Shimoda 39facfa01c usb: gadget: udc: renesas_usb3: Add register of usb role switch 
This patch adds role switch support for R-Car SoCs into the USB 3.0
peripheral driver. Some R-Car SoCs (e.g. R-Car H3) have USB 3.0
dual-role device controller which has the USB 3.0 xHCI host and
Renesas USB 3.0 peripheral.

Unfortunately, the mode change register (DRD_CON) contains
the USB 3.0 peripheral controller side only. So, this renesas_usb3
driver manages the DRD_CON now. However, in peripheral mode, the host
should stop. Also the host hardware needs to reinitialize its own
registers when the mode changes from peripheral to host mode.
Otherwise, the host cannot work correctly (e.g. detect a device
as high-speed).

To achieve this reinitialization by a driver, this driver also
registers a role switch driver to manage the DRD_CON and get
a device pointer of usb 3.0 host from "companion" property of OF.
Then, when the usb role is changed, renesas_usb3_role_switch_set()
will attach/release the xhci-plat driver to reinitialize the host
hardware.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-07-30 10:39:17 +03:00
..
aspeed-vhub usb/gadget: aspeed-vhub: add USB_LIBCOMPOSITE dependency 2018-07-06 16:28:31 +02:00
bdc treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
amd5536udc_pci.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
amd5536udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
at91_udc.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
at91_udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
atmel_usba_udc.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
atmel_usba_udc.h USB: udc: atmel_usba_udc: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
bcm63xx_udc.c USB: gadget: udc: bcm63xx_udc: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
core.c USB: gadget: Document that certain ep operations can be called in interrupt context 2018-07-26 13:53:52 +03:00
dummy_hcd.c usb: gadget: udc: Use scnprintf() instead of snprintf() 2018-03-13 10:47:51 +02:00
fotg210-udc.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
fotg210.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
fsl_mxc_udc.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
fsl_qe_udc.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
fsl_qe_udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
fsl_udc_core.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
fsl_usb2_udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
fusb300_udc.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
fusb300_udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
goku_udc.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
goku_udc.h usb: gadget: udc: change comparison to bitshift when dealing with a mask 2018-03-08 15:12:00 +02:00
gr_udc.c USB: gadget: udc: gr_udc: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
gr_udc.h USB: gadget: udc: gr_udc: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
Kconfig usb: gadget: udc: renesas_usb3: Add register of usb role switch 2018-07-30 10:39:17 +03:00
lpc32xx_udc.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
m66592-udc.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
m66592-udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
Makefile usb/gadget: Add driver for Aspeed SoC virtual hub 2018-05-15 10:06:53 +03:00
mv_u3d_core.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
mv_u3d.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
mv_udc_core.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
mv_udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
net2272.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
net2272.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
net2280.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
net2280.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
omap_udc.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
omap_udc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pch_udc.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
pxa25x_udc.c USB: gadget: pxa25x: Re-use DEFINE_SHOW_ATTRIBUTE() macro 2018-03-08 15:12:00 +02:00
pxa25x_udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
pxa27x_udc.c USB: gadget: udc: pxa27x_udc: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
pxa27x_udc.h USB: gadget: udc: pxa27x_udc: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
r8a66597-udc.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
r8a66597-udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
renesas_usb3.c usb: gadget: udc: renesas_usb3: Add register of usb role switch 2018-07-30 10:39:17 +03:00
s3c2410_udc.c USB: gadget: udc: s3c2410_udc: no need to check return value of debugfs_create functions 2018-05-31 12:54:23 +02:00
s3c2410_udc.h USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
s3c-hsudc.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
snps_udc_core.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
snps_udc_plat.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
trace.c USB: gadget: udc: Remove redundant license text 2017-11-07 15:45:02 +01:00
trace.h gadget event trace : add request pointer 2017-12-11 12:36:49 +02:00
udc-xilinx.c usb: gadget: udc-xilinx: remove redundant pointer udc 2017-12-11 12:36:51 +02:00