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46 Commits

Author SHA1 Message Date
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00
Varka Bhadram b87a9c5294 host: ohci-exynos: remove duplicate check on resource
Sanity check on resource happening with devm_ioremap_resource().

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-07 09:01:50 -08:00
Vivek Gautam 6d40500ac9 usb: ehci/ohci-exynos: Fix of_node_put() for child when getting PHYs
On enabling CONFIG_OF_SELFTEST which enables CONFIG_OF_DYNAMIC,
we found out that while getting PHYs for the controller we were
doing an extra of_node_put on the child node in our routines -
exynos_e/ohci_get_phy().
This child is however already put by of_get_next_available_child()
which does a of_node_put() on the "prev" node. So there's no point
in putting the same node again in our routine.

Reported-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03 15:34:00 -08:00
Wolfram Sang 566e0269e5 usb: host: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:21:49 +02:00
Vivek Gautam 2db941623d usb: host: ohci-exynos: Remove unnecessary usb-phy support
Now that we have completely moved from older USB-PHY drivers
to newer GENERIC-PHY drivers for PHYs available with USB controllers
on Exynos series of SoCs, we can remove the support for the same
in our host drivers too.

We also defer the probe for our host in case we end up getting
EPROBE_DEFER error when getting PHYs.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23 21:53:48 -07:00
Vivek Gautam 2f7f41c7a7 usb: ehci/ohci-exynos: Fix PHY getting sequence
Since we want to keep support for both older usb-phys as well as the
newer generic phys, lets first get the generic PHYs and fallback to
older USB-PHYs only when we fail to get the former.
This should fix the issue with ehci-exynos and ohci-exynos, wherein
in the absence of SAMSUNG_USB2PHY config symbol, we end up getting
the NOP_USB_XCEIV phy when the same is enabled. And thus the PHYs
are not configured properly.

Reported-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Jingoo Han <jg1.han@samsung.com>
Tested-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-08 15:38:21 -07:00
Sachin Kamat 473e92e69e usb: ohci-exynos: Use NULL instead of 0
The third argument of devm_of_phy_get expects a pointer.
Hence use NULL instead of 0.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-09 16:05:42 -07:00
Vivek Gautam bae00c1ac3 usb: host: ohci-exynos: Use devm_ioremap_resource instead of devm_ioremap
Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:52:29 -07:00
Vivek Gautam 7d28e54b8d usb: ohci-exynos: Add facility to use phy provided by the generic phy framework
Add support to consume phy provided by Generic phy framework.
Keeping the support for older usb-phy intact right now, in order
to prevent any functionality break in absence of relevant
device tree side change for ohci-exynos.
Once we move to new phy in the device nodes for ohci, we can
remove the support for older phys.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:50:20 -07:00
Vivek Gautam 54969ed6c4 usb: ohci-exynos: Use struct device instead of platform_device
Change to use struct device instead of struct platform_device
for some static functions.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:49:35 -07:00
Vivek Gautam 0021a75a47 usb: ohci-exynos: Remove locks for 'ohci' in suspend callback
Patch : 14982e3 USB: OHCI: Properly handle ohci-exynos suspend
has already removed 'ohci_hcd' settings from exynos glue layer
as a part of streamlining the ohci controller's suspend.
So we don't need the locks for 'ohci_hcd' anymore.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Manjunath Goudar <csmanjuvijay@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-04-24 13:05:32 -07:00
Peter Chen 3c9740a117 usb: hcd: move controller wakeup setting initialization to individual driver
Individual controller driver has different requirement for wakeup
setting, so move it from core to itself. In order to align with
current etting the default wakeup setting is enabled (except for
chipidea host).

Pass compile test with below commands:
	make O=outout/all allmodconfig
	make -j$CPU_NUM O=outout/all drivers/usb

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 18:06:46 -08:00
Majunath Goudar 14982e31da USB: OHCI: Properly handle ohci-exynos suspend
Suspend scenario in case of ohci-exynos glue was not
properly handled as it was not suspending generic part
of ohci controller. Alan Stern suggested, properly handle
ohci-exynos suspend scenario.

Calling explicitly the ohci_suspend() routine in
exynos_ohci_suspend() will ensure proper handling of suspend
scenario.

Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 17:53:18 -08:00
Linus Torvalds 8ceafbfa91 Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm
Pull DMA mask updates from Russell King:
 "This series cleans up the handling of DMA masks in a lot of drivers,
  fixing some bugs as we go.

  Some of the more serious errors include:
   - drivers which only set their coherent DMA mask if the attempt to
     set the streaming mask fails.
   - drivers which test for a NULL dma mask pointer, and then set the
     dma mask pointer to a location in their module .data section -
     which will cause problems if the module is reloaded.

  To counter these, I have introduced two helper functions:
   - dma_set_mask_and_coherent() takes care of setting both the
     streaming and coherent masks at the same time, with the correct
     error handling as specified by the API.
   - dma_coerce_mask_and_coherent() which resolves the problem of
     drivers forcefully setting DMA masks.  This is more a marker for
     future work to further clean these locations up - the code which
     creates the devices really should be initialising these, but to fix
     that in one go along with this change could potentially be very
     disruptive.

  The last thing this series does is prise away some of Linux's addition
  to "DMA addresses are physical addresses and RAM always starts at
  zero".  We have ARM LPAE systems where all system memory is above 4GB
  physical, hence having DMA masks interpreted by (eg) the block layers
  as describing physical addresses in the range 0..DMAMASK fails on
  these platforms.  Santosh Shilimkar addresses this in this series; the
  patches were copied to the appropriate people multiple times but were
  ignored.

  Fixing this also gets rid of some ARM weirdness in the setup of the
  max*pfn variables, and brings ARM into line with every other Linux
  architecture as far as those go"

* 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm: (52 commits)
  ARM: 7805/1: mm: change max*pfn to include the physical offset of memory
  ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations
  ARM: 7796/1: scsi: Use dma_max_pfn(dev) helper for bounce_limit calculations
  ARM: 7795/1: mm: dma-mapping: Add dma_max_pfn(dev) helper function
  ARM: 7794/1: block: Rename parameter dma_mask to max_addr for blk_queue_bounce_limit()
  ARM: DMA-API: better handing of DMA masks for coherent allocations
  ARM: 7857/1: dma: imx-sdma: setup dma mask
  DMA-API: firmware/google/gsmi.c: avoid direct access to DMA masks
  DMA-API: dcdbas: update DMA mask handing
  DMA-API: dma: edma.c: no need to explicitly initialize DMA masks
  DMA-API: usb: musb: use platform_device_register_full() to avoid directly messing with dma masks
  DMA-API: crypto: remove last references to 'static struct device *dev'
  DMA-API: crypto: fix ixp4xx crypto platform device support
  DMA-API: others: use dma_set_coherent_mask()
  DMA-API: staging: use dma_set_coherent_mask()
  DMA-API: usb: use new dma_coerce_mask_and_coherent()
  DMA-API: usb: use dma_set_coherent_mask()
  DMA-API: parport: parport_pc.c: use dma_coerce_mask_and_coherent()
  DMA-API: net: octeon: use dma_coerce_mask_and_coherent()
  DMA-API: net: nxp/lpc_eth: use dma_coerce_mask_and_coherent()
  ...
2013-11-14 07:55:21 +09:00
Russell King e1fd734183 DMA-API: usb: use new dma_coerce_mask_and_coherent()
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-10-31 14:49:04 +00:00
Russell King 22d9d8e831 DMA-API: usb: use dma_set_coherent_mask()
The correct way for a driver to specify the coherent DMA mask is
not to directly access the field in the struct device, but to use
dma_set_coherent_mask().  Only arch and bus code should access this
member directly.

Convert all direct write accesses to using the correct API.

Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-10-31 14:49:01 +00:00
Jingoo Han c00809d330 USB: ohci-exynos: Remove non-DT support
The non-DT for EXYNOS SoCs is not supported from v3.11.
Thus, there is no need to support non-DT for Exynos OHCI driver.

The 'include/linux/platform_data/usb-ohci-exynos.h' file has been
used for non-DT support. Thus, the 'usb-ohci-exynos.h' file can
be removed.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-14 11:09:13 -07:00
Greg Kroah-Hartman 066ba8e061 Revert "USB: OHCI: Properly handle ohci-exynos suspend"
This reverts commit fea0896fd3.

Manjunath is no longer at Linaro, the email address bounces.  Given
that, and the fact that others have reported problems with these
patches, I'm reverting them until someone from Linaro who can SUPPORT
THEM submits them.

I will no longer accept patches from linaro.com developers unless a
senior Linaro developer has signed off on them, which did not happen
with this patch set.

Reported-by: Olof Johansson <olof@lixom.net>
Cc: Manjunath Goudar <manjunath.goudar@linaro.org>
Cc: Manjunath Goudar <csmanjuvijay@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
2013-10-14 10:16:58 -07:00
Jingoo Han a72e2e5cc2 USB: ohci-exynos: Add missing usb_put_hcd() to prevent memory leak
When devm_usb_get_phy() fails, usb_put_hcd() should be called
to prevent memory leak.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-11 16:31:15 -07:00
Manjunath Goudar fea0896fd3 USB: OHCI: Properly handle ohci-exynos suspend
Suspend scenario in case of ohci-exynos glue was not
properly handled as it was not suspending generic part
of ohci controller. Alan Stern suggested, properly handle
ohci-exynos suspend scenario.

Calling explicitly the ohci_suspend() routine in
exynos_ohci_suspend() will ensure proper handling of suspend
scenario.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-05 17:56:41 -07:00
Manjunath Goudar 50a97e059b USB: OHCI: make ohci-exynos a separate driver
Separate the  Samsung OHCI EXYNOS host controller driver from ohci-hcd
host code so that it can be built as a separate driver module.
This work is part of enabling multi-platform kernels on ARM.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Deepak Saxena <dsaxena@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Cc: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:51:58 -07:00
Jingoo Han d4f09e28d7 USB: host: use dev_get_platdata()
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-31 17:53:50 -07:00
Stephen Warren 3b9561e9d9 USB: set device dma_mask without reference to global data
Many USB host drivers contain code such as:

if (!pdev->dev.dma_mask)
        pdev->dev.dma_mask = &tegra_ehci_dma_mask;

... where tegra_ehci_dma_mask is a global. I suspect this code originated
in commit 4a53f4e "USB: ehci-tegra: add probing through device tree" and
was simply copied everywhere else.

This works fine when the code is built-in, but can cause a crash when the
code is in a module. The first module load sets up the dma_mask pointer,
but if the module is removed and re-inserted, the value is now non-NULL,
and hence is not updated to point at the new location, and hence points
at a stale location within the previous module load address, which in
turn causes a crash if the pointer is de-referenced.

The simplest way of solving this seems to be to copy the code from
ehci-platform.c, which uses the coherent_dma_mask as the target for the
dma_mask pointer.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-16 17:30:52 -07:00
Linus Torvalds a7726350e0 ARM: arm-soc cleanup for 3.10
Here is a collection of cleanup patches. Among the pieces that stand out are:
 
 - The deletion of h720x platforms
 - Split of at91 non-dt platforms to their own Kconfig file to keep them separate
 - General cleanups and refactoring of i.MX and MXS platforms
 - Some restructuring of clock tables for OMAP
 - Convertion of PMC driver for Tegra to dt-only
 - Some renames of sunxi -> sun4i (Allwinner A10)
 - ... plus a bunch of other stuff that I haven't mentioned
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Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanup from Olof Johansson:
 "Here is a collection of cleanup patches.  Among the pieces that stand
  out are:

   - The deletion of h720x platforms
   - Split of at91 non-dt platforms to their own Kconfig file to keep
     them separate
   - General cleanups and refactoring of i.MX and MXS platforms
   - Some restructuring of clock tables for OMAP
   - Convertion of PMC driver for Tegra to dt-only
   - Some renames of sunxi -> sun4i (Allwinner A10)
   - ... plus a bunch of other stuff that I haven't mentioned"

* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (119 commits)
  ARM: i.MX: remove unused ARCH_* configs
  ARM i.MX53: remove platform ahci support
  ARM: sunxi: Rework the restart code
  irqchip: sunxi: Rename sunxi to sun4i
  irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro
  clocksource: sunxi: Rename sunxi to sun4i
  clocksource: sunxi: make use of CLKSRC_OF
  clocksource: sunxi: Cleanup the timer code
  ARM: at91: remove trailing semicolon from macros
  ARM: at91/setup: fix trivial typos
  ARM: EXYNOS: remove "config EXYNOS_DEV_DRM"
  ARM: EXYNOS: change the name of USB ohci header
  ARM: SAMSUNG: Remove unnecessary code for dma
  ARM: S3C24XX: Remove unused GPIO drive strength register definitions
  ARM: OMAP4+: PM: Restore CPU power state to ON with clockdomain force wakeup method
  ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2412
  ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2410
  ARM: S3C24XX: Removed unneeded dependency on ARCH_S3C24XX for boards
  ARM: SAMSUNG: Fix typo "CONFIG_SAMSUNG_DEV_RTC"
  ARM: S5P64X0: Fix typo "CONFIG_S5P64X0_SETUP_SDHCI"
  ...
2013-05-02 09:03:55 -07:00
Arnd Bergmann cccfc53626 usb: exynos: do not include plat/usb-phy.h
The definitions have moved to include/linux/usb/samsung-usb-phy.h,
and plat/usb-phy.h is unavailable from drivers in a multiplatform
configuration.

Also fix up the plat/usb-phy.h header file to use the definitions
from the new header instead of providing a separate copy.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 14:27:55 -07:00
Thomas Abraham 2871782ae1 usb: ohci-exynos: skip phy setup for Exynos5440 based platforms
Exynos5440 does not require any explict USB phy configuration. So skip
the USB phy configuration for Exynos5440 based platforms.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-11 08:56:58 -07:00
Jingoo Han b82718565c ARM: EXYNOS: change the name of USB ohci header
This patch changes the name of USB ohci header from 'usb-exynos.h'
to 'usb-ohci-exynos.h'. This is because this header file has
the platdata for only EXYNOS OHCI.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-04-08 21:54:16 +09:00
Felipe Balbi 9ee1c7fbea usb: host: ohci-exynos: fix PHY error handling
PHY layer no longer returns NULL. We must
switch from IS_ERR_OR_NULL() to IS_ERR().

Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18 14:41:30 +02:00
Greg Kroah-Hartman 4811f53fad usb: xceiv: patches for v3.9 merge window
Two new PHY drivers coming here: one for Samsung,
 one for OMAP. Both architectures are adding USB3
 support to mainline kernel.
 
 The PHY layer now allows us to have mulitple PHYs
 of the same type, which is necessary for platforms
 which provide more than one USB peripheral port.
 
 There's also a few cleanups here: removal of __dev*
 annotations, conversion of a cast to to_delayed_work(),
 and mxs-phy learns about ->set_suspend.
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Merge tag 'xceiv-for-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:
	usb: xceiv: patches for v3.9 merge window

	Two new PHY drivers coming here: one for Samsung,
	one for OMAP. Both architectures are adding USB3
	support to mainline kernel.

	The PHY layer now allows us to have mulitple PHYs
	of the same type, which is necessary for platforms
	which provide more than one USB peripheral port.

	There's also a few cleanups here: removal of __dev*
	annotations, conversion of a cast to to_delayed_work(),
	and mxs-phy learns about ->set_suspend.
2013-01-25 09:09:46 -08:00
Vivek Gautam 6e2477777c usb: ehci-s5p/ohci-exynos: Fix compatible strings for the device
Using specific chip in compatible strings. Newer SOCs can claim
device by using older string in the compatible list.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-24 14:03:56 -08:00
Vivek Gautam ed993bf19b USB: ohci-exynos: Add phy driver support
Adding the phy-driver to ohci-exynos. Keeping the platform data
for continuing the smooth operation for boards which still uses it

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-23 13:39:22 +02:00
Vivek Gautam b506eebc50 ARM: EXYNOS: Update & move usb-phy types to generic include layer
Updating the names of usb-phy types to more generic names:
USB_PHY_TYPE_DEIVCE & USB_PHY_TYPE_HOST; and further update
its dependencies.

Signed-off-by: Praveen Paneri <p.paneri@samsung.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-23 13:39:07 +02:00
Bill Pemberton fb4e98ab63 usb: remove use of __devexit
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 13:27:17 -08:00
Bill Pemberton 41ac7b3ab7 usb: remove use of __devinit
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Li Yang <leoli@freescale.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Olav Kongas <ok@artecdesign.ee>
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 13:27:16 -08:00
Bill Pemberton 7690417db5 usb: remove use of __devexit_p
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 13:27:16 -08:00
Vincent Palatin 57465109ce USB: ohci-exynos: initialize registers pointer earlier
In the former code, we have a race condition between the first interrupt
and the regs field initilization in the usb_hcd structure.
If the OHCI irq fires before hcd->regs is set, we are getting a null
pointer dereference in ohci_irq.

When calling usb_add_hcd(), it first executes the reset() callback,
then enables the ohci interrupt, and finally executes the start()
callback. So moving the ohci_init() call which actually initializes the
reg field from start() to reset() should remove the race.

Tested by enabling the external HSIC hub in the bootloader on an exynos5
machine and booting. With the former code, this triggers an early interrupt
about 50% of the boots and a subsequent kernel panic in ohci_irq when trying
to access the registers.

Cc: Olof Johansson <olofj@chromium.org>
Cc: Doug Anderson <dianders@chromium.org>
Cc: Arjun.K.V <arjun.kv@samsung.com>
Cc: Vikas Sajjan <vikas.sajjan@samsung.com>
Cc: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-02 09:25:20 -07:00
Jingoo Han 60d80adbac USB: ohci-exynos: use devm_clk_get()
The devm_ functions allocate memory that is released when a driver
detaches. This patch uses devm_clk_get() for these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24 14:39:52 -07:00
Thomas Abraham c05c946c68 usb: ohci-exynos: use clk_prepare_enable and clk_disable_unprepare
Convert clk_enable/clk_disable to clk_prepare_enable/clk_disable_unprepare
calls as required by common clock framework.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24 14:39:06 -07:00
Florian Fainelli cfa49b4b88 USB: ohci: merge ohci_finish_controller_resume with ohci_resume
Merge ohci_finish_controller_resume with ohci_resume as suggested by Alan
Stern. Since ohci_finish_controller_resume no longer exists, update the
various OHCI drivers to call ohci_resume() instead. Some drivers used to set
themselves the bit HCD_FLAG_HW_ACCESSIBLE, which is now handled by
ohci_resume().

Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-22 11:23:59 -07:00
Arnd Bergmann 436d42c61c ARM: samsung: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the samsung include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: linux-samsung-soc@vger.kernel.org
2012-09-19 17:42:18 +02:00
Vivek Gautam d51389306f USB: ohci-exynos: Add support for device tree
This patch adds support to parse probe data for
ohci driver for exynos using device tree.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16 17:16:17 -07:00
Jingoo Han 390a0a7806 USB: ohci-exynos: use devm_ functions
The devm_ functions allocate memory that is released when a driver
detaches. This makes the code smaller and a bit simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-06 10:42:21 -07:00
Jingoo Han e864abed54 USB: ohci-exynos: add clock gating to suspend/resume
This patch adds clock gating to suspend and resume functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-06 10:42:21 -07:00
Greg Kroah-Hartman 5e415245b2 USB: ohci-exynos.c: remove err() usage
err() was a very old USB-specific macro that I thought had
gone away.  This patch removes it from being used in the
driver and uses dev_err() instead.

CC: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-27 11:24:41 -07:00
Jingoo Han 2b4ffe31a2 USB: ohci-exynos: replace hcd->state with ohci->rh_state
This patch removes uses of hcd->state and replaces hcd->state with
ohci->rh_state field.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-24 13:40:04 -08:00
Jingoo Han 62194244cf USB: Add Samsung Exynos OHCI diver
This patch adds USB OHCI driver for Samsung EXYNOS SoCs.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-12-23 11:21:56 +09:00