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path: root/drivers/usb/dwc3/dwc3-exynos.c
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2013-05-28usb: dwc3: exynos: PHY should be deleted later than dwc3 corePeter Chen
If the glue layer is removed first (core layer later), it deletes the phy device first, then the core device. But at core's removal, it still uses PHY's resources, it may cause kernel's oops. It is much like the problem Paul Zimmerman reported at: http://marc.info/?l=linux-usb&m=136547502011472&w=2. Besides, it is reasonable the PHY is deleted at last as the controller is the PHY's user. Signed-off-by: Peter Chen <peter.chen@freescale.com> Cc: <stable@vger.kernel.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-05-16USB: set device dma_mask without reference to global dataStephen Warren
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>
2013-04-02usb: dwc3: add CONFIG_PM_SLEEP to suspend/resume functionsJingoo Han
Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SET_SYSTEM_SLEEP_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. Unnecessary CONFIG_PM ifdefs are removed. drivers/usb/dwc3/core.c:682:12: warning: 'dwc3_suspend' defined but not used [-Wunused-function] drivers/usb/dwc3/core.c:709:12: warning: 'dwc3_resume' defined but not used [-Wunused-function] drivers/usb/dwc3/dwc3-omap.c:430:12: warning: 'dwc3_omap_suspend' defined but not used [-Wunused-function] drivers/usb/dwc3/dwc3-omap.c:440:12: warning: 'dwc3_omap_resume' defined but not used [-Wunused-function] drivers/usb/dwc3/dwc3-exynos.c:185:12: warning: 'dwc3_exynos_suspend' defined but not used [-Wunused-function] drivers/usb/dwc3/dwc3-exynos.c:194:12: warning: 'dwc3_exynos_resume' defined but not used [-Wunused-function] Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: dwc3: exynos: use clk_prepare_enable and clk_disable_unprepareVivek Gautam
Convert clk_enable/clk_disable to clk_prepare_enable/clk_disable_unprepare calls as required by common clock framework. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> CC: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: dwc3: exynos: Use of_platform API to create dwc3 core pdevVivek Gautam
Used of_platform_populate() to create dwc3 core platform_device from device tree data. Additionally some cleanup is also done. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> CC: Felipe Balbi <balbi@ti.com> CC: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: dwc3: exynos: add basic suspend/resume supportVikas Sajjan
Adds suspend and resume callbacks to exynos dwc3 driver as part of power management support. This change does gating of dwc3 clock during suspend/resume cycles. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Vikas C Sajjan <vikas.sajjan@linaro.org> CC: Doug Anderson <dianders@chromium.org> Tested-by: Vivek Gautam <gautam.vivek@samsung.com> [ balbi@ti.com : refreshed to current linus/master ] Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-04usb: dwc3: glue layers shouldn't know about the core IPFelipe Balbi
remove inclusion of "core.h" from all glue layers as they don't need to know details about the core IP. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-25usb: dwc3: exynos/omap: Change platform device IDs for no_op_xceive to AUTOVivek Gautam
Multiple dwc3 probe calls try to allocate no_op_xceive platform device. Having static IDs for these will throw sysfs error -EEXIST. Changing these static platform device IDs to AUTO to enable multiple dwc3 controller support on a SoC. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-25usb: dwc3: exynos: fix compatible strings for the deviceVivek Gautam
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> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-18usb: dwc3: exynos: use devm_ functionsJingoo Han
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: Felipe Balbi <balbi@ti.com>
2012-11-21usb: remove use of __devexitBill Pemberton
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>
2012-11-21usb: remove use of __devinitBill Pemberton
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>
2012-11-21usb: remove use of __devexit_pBill Pemberton
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>
2012-11-06usb: dwc3: exynos: remove platform data supportVivek Gautam
We are removing plat data which was used till now to init and exit phy. We no longer need this since dwc3-core takes care of initializing and shutting-down the phy using usb_phy_init() and usb_phy_shutdown(). Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-11-06usb: dwc3: exynos: add support for device treeVivek Gautam
This patch adds support to parse probe data for dwc3-exynos driver using device tree. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-10-31usb: dwc3: remove custom unique id handlingSebastian Andrzej Siewior
The lockless implementation of the unique id is quite impressive (:P) but dirver's core can handle it, we can remove it and make our code a little smaller. Cc: Anton Tikhomirov <av.tikhomirov@samsung.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10usb: dwc3: exynos: add nop transceiver supportFelipe Balbi
We will be adding support for transceivers on dwc3 driver but not all boards have controllable transceivers. For those which don't provide controllable transceivers we will register nop transceivers. Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-06-22usb: dwc3: Remove duplicate header file inclusionSachin Kamat
module.h header file was included twice. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-03-02usb: dwc3: Add Exynos Specific Glue layerAnton Tikhomirov
Adds Exynos Specific Glue layer to support USB peripherals on Samsung Exynos5 chips. [ balbi@ti.com : prevent compilation of Exynos glue layer on platforms which don't provide clk API implementation ] Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>