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path: root/drivers/usb/gadget/s3c-hsotg.c
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2013-09-17usb: s3c-hsotg: do not disconnect gadget when receiving ErlySusp intrChanho Park1-2/+0
DWC2 databook indicates if the core sets "ErlySusp" bit, an idle state has been detected on the USB for 3 ms. This situation can be occurred when waiting a request from user daemon. So, we should keep the connection between udc and gadget even though this interrupt is occurred. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-09-17usb: s3c-hsotg: fix unregistration functionMarek Szyprowski1-7/+4
After driver conversion to udc_start/udc_stop infrastructure (commit "usb:hsotg:samsung: Use new udc_start and udc_stop callbacks" f65f0f1098) the gadget unregistration function is almost always called with 'driver' parameter being NULL, what caused that the unregistration code has not been executed at all. This is a leftover from the earlier verison of this function (which used simple start/stop interface), where driver parameter was obligatory. This patch removes the NULL check for the 'driver' pointer and removes all dereferences of it. It also moves disabling voltage regulators out of the atomic context, because handling regulators (which are usually i2c devices) might require sleeping. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-07-30usb: gadget: use dev_get_platdata()Jingoo Han1-2/+2
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: Felipe Balbi <balbi@ti.com>
2013-07-29usb: gadget: s3c-hsotg: Allow driver instantiation using device treeTomasz Figa1-0/+10
This patch adds OF match table to the driver to allow instantiating it using device tree. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-05-15usb: gadget: s3c-hsotg: pass 'struct usb_request *' to ↵Jingoo Han1-1/+1
usb_gadget_unmap_request() 'struct usb_request *' should be passed to usb_gadget_unmap_request(), as the second argument; however, 'struct s3c_hsotg_req *' is used. Fixed build warnings as below: drivers/usb/gadget/s3c-hsotg.c: In function 's3c_hsotg_unmap_dma': drivers/usb/gadget/s3c-hsotg.c:440:2: warning: passing argument 2 of 'usb_gadget_unmap_request' from incompatible pointer type [enabled by default] include/linux/usb/gadget.h:961:13: note: expected 'struct usb_request *' but argument is of type 'struct s3c_hsotg_req *' drivers/usb/gadget/s3c-hsotg.c:434:22: warning: unused variable 'req' [-Wunused-variable] Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: gadget: s3c-hsotg: fix PHY error handlingFelipe Balbi1-1/+1
PHY laye rno longer return NULL. We need to switch over from IS_ERR_OR_NULL() to IS_ERR(). Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: gadget: s3c-hsotg: don't assign gadget.dev.release directlyFelipe Balbi1-11/+0
udc-core provides a better way to handle release methods, let's use it. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: gadget: s3c-hsotg: don't touch gadget.dev.driverFelipe Balbi1-3/+0
udc-core now handles that for us, which means we can remove it from our driver. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: gadget: s3c-hsotg: remove unnecessary initializationsFelipe Balbi1-3/+0
udc-core now sets dma-related and parent fields for us, we don't need to do it ourselves. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: gadget: s3c-hsotg: switch over to usb_gadget_map/unmap_request()Felipe Balbi1-41/+5
we have generic implementations for a reason, let's use them. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: gadget: drop now unnecessary flagFelipe Balbi1-1/+0
We don't need the ->register_my_device flag anymore because all UDC drivers have been properly converted. Let's remove every history of it. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-03-18usb: gadget: s3c-hsotg: let udc-core manage gadget->devFelipe Balbi1-13/+1
By simply setting a flag, we can drop some boilerplate code. Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-02-22Merge tag 'usb-3.9-rc1' of ↵Linus Torvalds1-15/+29
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB patches from Greg Kroah-Hartman: "Here's the big USB merge for 3.9-rc1 Nothing major, lots of gadget fixes, and of course, xhci stuff. All of this has been in linux-next for a while, with the exception of the last 3 patches, which were reverts of patches in the tree that caused problems, they went in yesterday." * tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (190 commits) Revert "USB: EHCI: make ehci-vt8500 a separate driver" Revert "USB: EHCI: make ehci-orion a separate driver" Revert "USB: update host controller Kconfig entries" USB: update host controller Kconfig entries USB: EHCI: make ehci-orion a separate driver USB: EHCI: make ehci-vt8500 a separate driver USB: usb-storage: unusual_devs update for Super TOP SATA bridge USB: ehci-omap: Fix autoloading of module USB: ehci-omap: Don't free gpios that we didn't request USB: option: add Huawei "ACM" devices using protocol = vendor USB: serial: fix null-pointer dereferences on disconnect USB: option: add Yota / Megafon M100-1 4g modem drivers/usb: add missing GENERIC_HARDIRQS dependencies USB: storage: properly handle the endian issues of idProduct testusb: remove all mentions of 'usbfs' usb: gadget: imx_udc: make it depend on BROKEN usb: omap_control_usb: fix compile warning ARM: OMAP: USB: Add phy binding information ARM: OMAP2: MUSB: Specify omap4 has mailbox ARM: OMAP: devices: create device for usb part of control module ...
2013-01-25Merge tag 'xceiv-for-v3.9' of ↵Greg Kroah-Hartman1-10/+27
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.
2013-01-25Merge tag 'gadget-for-v3.9' of ↵Greg Kroah-Hartman1-5/+2
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: gadget: patches for v3.9 merge window finally getting rid of the old ->start()/->stop() methods in favor of the better and improved ->udc_start()/->udc_stop(). There were surprisingly quite a few users left, but all of them have been converted. f_mass_storage removed some dead code, which is always great ;-) There's also a big cleanup to the gadget framework from Sebastian which gets us a lot closer to having only function drivers in kernel and move over to configfs-based binding. Other than these, there's the usual set of cleanups: s3c UDCs are moving over to devm_regulator_bulk_get() API, at91_udc removed an unnecessary check for work_pending() before scheduling and there's the removal of an unused variable from uac2_pcm_trigger().
2013-01-24usb: gadget: constify all struct usb_gadget_opsFelipe Balbi1-1/+1
Add the missing 'const' keyword to all struct usb_gadget_ops in the gadget framework. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-22usb: Convert to devm_ioremap_resource()Thierry Reding1-4/+3
Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages so all explicit error messages can be removed from the failure code paths. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-18usb: phy: s3c-hsotg: adding phy driver supportPraveen Paneri1-10/+27
Adding the transceiver to hsotg driver. Keeping the platform data for continuing the smooth operation for boards which still uses it Signed-off-by: Praveen Paneri <p.paneri@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-10usb: gadget: s3c-hsotg: Use devm_regulator_bulk_get APISachin Kamat1-4/+1
devm_regulator_bulk_get is device managed and saves some cleanup and exit code. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-12-13usb: gadget: s3c-hsotg: Fix invalid free of devm_ allocated dataTushar Behera1-3/+2
Since hsotg object is allocated using devm_kzalloc() API, there is no need to free this explicitly. But we need to keep the release API to prevent warnings. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-11-22usb: remove use of __devexitBill Pemberton1-2/+2
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>
2012-11-22usb: remove use of __devinitBill Pemberton1-3/+3
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>
2012-11-22usb: remove use of __devexit_pBill Pemberton1-1/+1
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>
2012-09-12Merge tag 'gadget-for-v3.7' of ↵Greg Kroah-Hartman1-5/+3
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next usb: gadget: patches for v3.7 merge window This pull request is large but the biggest part is the first part of the cleanup on the gadget framework so we have a saner setup to add configfs support for v3.8. We have also some more conversions to the new udc_start/udc_stop which makes us closer from dropping the old interfaces. USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED are finally gone, thanks to Michal for his awesome work. Other than that, we have the usual set of miscellaneous changes and cleanups involving improvements to debug messages, removal of duplicated includes, moving dereference after NULL test, making renesas_hsbhs' irq handler Shared, unused code being dropped, prevention of sleep-inside-spinlock bugs and a race condition fix on udc-core.
2012-09-03usb: gadget: s3c-hsotg: Use devm_clk_get functionSachin Kamat1-3/+1
devm_* functions are already used in this file. Hence convert clk_get to devm_clk_get for completeness. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-23usb: gadget: s3c-hsotg: fix core reset timeout failureDu, Changbin1-2/+2
The timeout values were 1000 and timeout issue occured many times on my s3c6410 Soc based board (mostly when booting whith USB cable not connected). This patch increase the values to 10000 to guarantee the success of reset. Having set timeout to 10000, I printed the remained timeout values which could cause timeout issue before this change (tested several times). the first timeout value remained: timeout = 8079 timeout = 8079 timeout = 8078 timeout = 8081 the second timeout value remained: timeout = 7940 timeout = 7945 timeout = 7940 timeout = 7938 Seeing from above values, I think the value 10000 is big enough. Signed-off-by: Du, Changbin <changbin.du@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-08-16drivers/usb/gadget/s3c-hsotg.c: fix error return codeJulia Lawall1-0/+3
Convert a 0 error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier ret; expression e,e1,e2,e3,e4,x; @@ ( if (\(ret != 0\|ret < 0\) || ...) { ... return ...; } | ret = 0 ) ... when != ret = e1 *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...); ... when != x = e2 when != ret = e3 *if (x == NULL || ...) { ... when != ret = e4 * return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-02usb: gadget: s3c-hsotg: Propagate devicetree to gadget driversAlexandre Pereira da Silva1-0/+1
Fill dev.of_node of gadget drivers, so they can use devicetree Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-06-22usb: gadget: hsotg: pullup method implementation for s3c-hsotg UDC driverLukasz Majewski1-3/+30
This commit adds pullup method implementation for UDC s3c-hsotg driver. It is needed for e.g. CCG - Configurable Composite Gadget, when user space configuration change request device disconnection from USB bus (done via calling usb_gadget_connect/disconnect, which calls UDC's pullup method). Implementation of pullup method has caused removal of phy_enable and core_init methods from udc_start to pullup. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-06-15usb: hsotg: samsung: smp Provide *_lock functions abstraction layer for SMP SoCsLukasz Majewski1-49/+48
For SMP processors the spin_lock_irqsave is _only_ able to disable interrupt on a core on which it is executed. Therefore there may be a situation when other cores raise s3c-hsotg IRQ. Then there are several places where critical sections can be overwritten. To protect the above thread, a spin_lock in the interrupt handler has been added. Due to coherent memory view (especially L1 cache) the spin lock variable control access to IRQ handler only for one CPU core. In this way serialization to access this driver is provided and hence several spin_lock_* routines could be removed from IRQ handler's related functions. The complete_request_lock function has been removed since all its calls are performed from interrupt (spin lock protected) context. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-06-15usb: hsotg: samsung: Protect the udc_stop routine with spinlockLukasz Majewski1-0/+5
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-06-15usb: hsotg: samsung: Replace endpoint specific locks with a global lockLukasz Majewski1-26/+28
The endpoint specific locks are replaced with a global lock. This is crucial for running s3c-hsotg driver on a SMP SoC. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-06-04usb: s3c-hsotg: Use devm_* functions in s3c-hsotg.c fileSachin Kamat1-40/+11
devm_* functions are used to replace kzalloc, request_mem_region, ioremap and request_irq functions in probe call. With the usage of devm_* functions explicit freeing and unmapping is not required. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-10usb:hsotg:samsung:cosmetic Move <linux/platform_data/s3c-hsotg.h> to proper ↵Lukasz Majewski1-1/+1
place This commit adds a cosmetic change to the s3c-hsotg UDC driver. It moves s3c-hsotg.h to other linux/ related inclusions. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-04usb:hsotg:samsung: err_irq: support for probe functionLukasz Majewski1-8/+5
Missing handler for freeing requested IRQ added. Moreover clk_ calls has been reorganized. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Use clk_prepare_enable and clk_disable_unprepareLukasz Majewski1-3/+3
This commit adjust the s3c-hsotg to new clock API. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Remove the S3C_ prefix from registers definition.Lukasz Majewski1-317/+317
This code removes the S3C_ prefix from s3c-hsotg driver. This change provides more architecture independent code. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Add release function for hsotg deviceLukasz Majewski1-1/+13
Add release function to prevent kernel warning. Kfree is performed when all references are gone. Signed-off-by: Sangwook Lee <sangwook.lee@linaro.org> Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Remove our_hsotg global pointerLukasz Majewski1-5/+2
The our_hsotg global pointer to hsotg USB device state is removed. It has been replaced with to_hsotg(gadget) function. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Comments reorganization and cleanupLukasz Majewski1-122/+252
Refactor all comments to comply with kernel codding style. Moreover doxygen descriptions have been added for selected functions. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Use new udc_start and udc_stop callbacksLukasz Majewski1-25/+36
Replace of deprecated start and stop callbacks with a udc_start and udc_stop ones. Now the bind from composite driver is NOT called explicitly, so more work needs to be done at s3c_udc_probe. Especially enabling SoC clocks and power for runtime determination of EP number. After probing, those sources are disabled and enabled again at udc_start and pullup afterwards. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Sangwook Lee <sangwook.lee@linaro.org> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Determine number of EPs from HW configuration registerLukasz Majewski1-67/+100
This commit adds support for determining of EPs number during run time. Configuration is read from a HW configuration register in a specially created s3c_hsotg_hw_cfg function. Moreover it was necessary to defer at probe allocation of the struct s3c_hsotg_ep instances until number of endpoints is known. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Cable disconnection recovery codeLukasz Majewski1-10/+18
This code allows Samsung SoC's to recover its state when device is disconnected and connected during transfer. It is necessary, in such a scenario, to reinitialize the USB core to assure correct initial state of the driver. This operation is needed since the disconnect interrupt is only available at HOST mode, which is not supported by this driver. A simple mechanism with jiffies has been used to perform core reset only once. Tested with: - DFU gadget (various size of the sent data - also packet = MPS) - Ethernet gadget (CDC and RNDIS) - Multi Function Gadget (g_multi) HW: - Samsung's C210 Universal rev.0 Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Rename s3c_hsotg_disconnect functionLukasz Majewski1-5/+5
The s3c_hsotg_disconnect_irq function has been renamed to reflect, that it can be used not only during the host disconnect irq. The s3c_hsotg_disconnect shall be used as a fall back for scenario when USB cable is unplugged and plugged to the device. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Remove Disconnect Interrupt handlerLukasz Majewski1-10/+2
The USB Disconnect Interrupt handler, according to specification, is only working at HOST mode. Samsung SoCs (e.g. Exynos4) are working at device mode, so this interrupt is never caught. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Extract core initialization functionLukasz Majewski1-161/+173
The s3c_hsotg_core_init function has been added to exclude code responsible for Samsung's SoCs USB core initialization. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Sending ZLP packet for IN EP0 transfersLukasz Majewski1-2/+32
This commit targets following scenarios for IN requests: 1. HOST requests e.g. 256B (which is a multiple of MPS = 64B). Then NO ZLP shall be sent, since host expects exact number of bytes. 2. HOST requested 4096B, but our data for sending is 256B. In this situation ZLP shall be send to tell HOST that no more data is available and it shall not wait for more data. This prevents HOST from hanging. Tested with: - DFU gadget (various size of the sent data - also packet = MPS) - Ethernet gadget (CDC and RNDIS) - Multi Function Gadget (g_multi) HW: - Samsung's C210 Universal rev.0 - Samsung's C110 GONI Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: NAK management for EP0 (Setup stage of control transfers)Lukasz Majewski1-2/+19
For SETUP stage of USB control transmission, the NAK shall NOT be CLEAR. The SNAK/CNAK control is crucial for this type of driver, since data arrives to earlier defined requests. Tested with: - DFU gadget (various size of the sent data - also packet = MPS) - Ethernet gadget (CDC and RNDIS) - Multi Function Gadget (g_multi) HW: - Samsung's C210 Universal rev.0 Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Use of regulator_bulk_* functions for USB regulatorsLukasz Majewski1-2/+39
This commit adds support for supply voltage management for s3c-hsotg IP block. For that purpose a convenient regulator_bulk_* functions have been used. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Liam Girdwood <lrg@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-05-04usb:hsotg:samsung: Wrappers for USB PHY methodsLukasz Majewski1-5/+43
Wrappers for PHY methods have been added for readability and reduction of code repetition. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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