- Oct 18, 2013
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Andrzej Pietrasiewicz authored
Fix spacing, improve error code returned, remove unused #define, use strtobool() instead of kstrtou8(). Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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- Oct 17, 2013
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Sebastian Andrzej Siewior authored
I introduced this check here because it looked wrong in HOST only configurions. The timer would remove that session bit and will never come back and so there would not be another session. Now that I played with OTG for a while I belive this workaround is only required for the OTG mode because we have to end the session and then we have to try to start manually. Therefore, this patch limits this timer to the OTG only port mode so we don't need to poll around in device only mode. Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Sebastian Andrzej Siewior authored
According to the comments, we rely on the OTG timer because the core does not expose some important OTG details. So far this is all I know. After playing with OTG I stumbled over a problem: musb is recognized as a B-device without a problem. Whenever a cable is plugged, the VBUS rises, musb recognizes this as a starting session, sets the MUSB_DEVCTL_SESSION bit by itself and a RESET interrupt occurs, the session starts. Good. After a disconnect, the timer is started and re-starts itself because it remains in B_IDLE with the BDEVICE set. I didn't figure the the reason or the need for it. Nothing changes here except for OTG state from B to A device if the BDEVICE bit disappears. This doesn't make much sense to me because nothing happens after this. _IF_ we receive an interrupt before the state change then we may act on wrong condition. Plugging a B-device (and letting MUSB act as host) doesn't work here. The reason seems to be that the MUSB tries to start a session, it fails and then it removes the bit. So we never start as a host. This patch sets the MUSB_DEVCTL_SESSION bit in the IDLE state so musb can try to establish a session as host. After the bit is set, musb tries to start a session and if it fails it clears the bit. Therefore it will try over and over again until a session either as host or as device is established. The readout of the MUSB_DEVCTL register after the removal the MUSB_DEVCTL_SESSION (in A_WAIT_BCON) has been removed because it did not contain the BDEVICE bit set (in the second read) leading to A_IDLE. After plugging a host musb assumed that it is also a host and complained about a missing reset. However a third read of the register has has the BDEVICE bit set so it seems that it is not stable. This mostly what da8xx.c is doing except that we set the timer also after A_WAIT_BCON so the session bit can be triggered. Whit this change I was able to keep am335x-evm in OTG mode and plug in either a HOST or a DEVICE and in a random order and the device was recognized. Cc: stable@vger.kernel.org # v3.11 Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Sebastian Andrzej Siewior authored
This patch moves dsps_musb_try_idle() before dsps_musb_enable() so the declaration (of dsps_musb_try_idle() can be removed. Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Sebastian Andrzej Siewior authored
The timer is initialized right after musb is probed. There is actually no need to have this timer running because _nothing_ will happen until we have the gadget loaded. Also we need this timer only if we run in OTG mode _and_ we need it also after the gadget has been replaced with another one. I've been looking at am35x.c, da8xx.c, omap2430.c, tusb6010.c. da8xx seem to have the same problem as dsps and doing mostly the same thing. tusb6010 seem to do something different and do some actual "idle / power saving" work so I am not too comfortable to remove musb_platform_try_idle() from musb_gadget_setup(). Therefore this patch does not start the timer if there is no gadget active (which is at musb_gadget_setup() at time). In order to have the timer active after the gadget is loaded it will be triggered from dsps_musb_enable(). Cc: stable@vger.kernel.org # v3.11 Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Sebastian Andrzej Siewior authored
In commit 001dd84a ("usb: musb: start musb on the udc side, too") it was ensured that the state engine is started also in OTG mode after a removal / insertion of the gadget. Unfortunately this change also introduced a bug: If the device is configured as OTG and it connected with a remote host _without_ loading a gadget then we bug() later (because musb->otg->gadget is not initialized). Initially I assumed it might be nice to have the host part of musb in OTG mode working without having a gadget loaded. This bug and fact that it wasn't working like this before the host/gadget split made me realize that this was a silly idea. This patch now introduces back the old behavior where in OTG mode the host mode is only working after the gadget has been loaded. Cc: stable@vger.kernel.org # v3.11 Cc: Daniel Mack <zonque@gmail.com> Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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- Oct 15, 2013
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Robert Baldyga authored
Value of can_write variable in s3c_hsotg_write_fifo function should be limited to 512 only for non-periodic endpoints. There was some discrepancy between comment and code, becouse comment suggests correct behavior, but in the code limit was applied to periodic endpoints too. So there is additional check causing the limitation concerns only non-periodic endpoints. 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>
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Robert Baldyga authored
In dedicated-fifo mode TxFIFOEmpty interrupt should be asserted when TxFIFO for this endpoint is completly empty, so NPTxFEmpLvl and PTxFEmpLvl bits are set in GAHBCFG register. In DIEPMSK register INTknTXFEmpMsk is set, becouse it's needed to indicate FIFO Empty state. 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>
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Robert Baldyga authored
All requests for endpoint are completed when it was halted and the halt was cleared by CLEAR_FEATURE, but not when new state is same as previous. 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>
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Robert Baldyga authored
Property "halted" of s3c_hsotg_ep structure is actually initialised when ep enabled, and changed when halt is set/cleared. 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>
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Robert Baldyga authored
In OEPInt/IEPInt interrupts handling added bitwise and of DAINT and DAINTMSK, because we should handle masked interrupts only. 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>
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Robert Baldyga authored
When s3c_hsotg_trytx is called for ep without enqueued request, interrupts for this ep are disabled, to prevent interrupt flooding. Interrupts are enabled when new request for this ep is starting. 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>
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Robert Baldyga authored
In s3c_hsotg_write_fifo function PTxFEmp/NPTxFEmp interrupts are enabled only in shared-fifo mode. In dedicated-fifo mode they should not be used (when enabled then cause interrupt storm). 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>
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Robert Baldyga authored
After normal handling of SetupDone interrupt, XferCompl interrupt occurs, and then we enqueue new setup request. But when ep0 is stalled, there is no XferCompl, so we have to enqueue setup request immediately after stalling ep. Otherwise incoming control requests won't be processed correctly. 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>
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Andrzej Pietrasiewicz authored
If cdrom flag is set ro flag is implied. Try setting the ro first, and only if it succeeds set the cdrom flag. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
strtobool is more flexible for the user and is more appropriate in the context. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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- Oct 12, 2013
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Gabor Juhos authored
The callers are expecting an ERR_PTR value in case of an error. Change he code to return with an encoded -ENOMEM value in the case of a failed devres_alloc call. Signed-off-by:
Gabor Juhos <juhosg@openwrt.org> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andreas Larsson authored
Create a way for VERBOSE_DEBUG to be enabled during drivers/usb/gadget/ build. Signed-off-by:
Andreas Larsson <andreas@gaisler.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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- Oct 11, 2013
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Robert Baldyga authored
This patch removes unused label. 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>
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Robert Baldyga authored
This patch adds Multi Count support. It adds few modifications: - Fix s3c_hsotg_set_ep_maxpacket() function. Field wMaxPacketSize of endpoint descriptor is now splitted into maximum packet size value and number of additional transaction per microframe. - Modify s3c_hsotg_write_fifo() function. It actually calculates transfer size, taking into account Multi Count value, which indicates number of transactions per microframe. - Fix s3c_hsotg_start_req() function by setting number of packets to Multi Count field in DIEPTSIZ register for isochronous endpoints. 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>
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Robert Baldyga authored
This patch adds isochronous transfer support. It adds few modifications: - Modify s3c_hsotg_epint() function. Some interrupts are ignored for isochronous endpoints, (e.g. INTknTXFEmpMsk) becouse isochronous request is always transfered in single transaction, which ends with XferCompl interrupt. - Add Odd/Even microframe toggle to allow data transfering in each microframe in s3c_hsotg_epint() function. - Fix s3c_hsotg_ep_enable() function by supporting isochronous endpoint type. 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>
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Felipe Balbi authored
We are going to disable runtime_pm and we're removing the driver, we must disable the device now. Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Valentine Barshak authored
This adds RCAR Gen2 USB phy support. The driver configures USB channels 0/2 which are shared between PCI USB hosts and USBHS/USBSS devices. It also controls internal USBHS phy. Signed-off-by:
Valentine Barshak <valentine.barshak@cogentembedded.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Sebastian Andrzej Siewior authored
So I captured this: |WARNING: CPU: 0 PID: 2078 at /home/bigeasy/work/new/TI/linux/lib/debugobjects.c:260 debug_print_object+0x94/0xc4() |ODEBUG: free active (active state 0) object type: work_struct hint: musb_irq_work+0x0/0x38 [musb_hdrc] |CPU: 0 PID: 2078 Comm: rmmod Not tainted 3.12.0-rc4+ #338 |[<c0014d38>] (unwind_backtrace+0x0/0xf4) from [<c001249c>] (show_stack+0x14/0x1c) |[<c001249c>] (show_stack+0x14/0x1c) from [<c0037720>] (warn_slowpath_common+0x64/0x84) |[<c0037720>] (warn_slowpath_common+0x64/0x84) from [<c00377d4>] (warn_slowpath_fmt+0x30/0x40) |[<c00377d4>] (warn_slowpath_fmt+0x30/0x40) from [<c022ae90>] (debug_print_object+0x94/0xc4) |[<c022ae90>] (debug_print_object+0x94/0xc4) from [<c022b7e0>] (debug_check_no_obj_freed+0x1c0/0x228) |[<c022b7e0>] (debug_check_no_obj_freed+0x1c0/0x228) from [<c00f1f38>] (kfree+0xf8/0x228) |[<c00f1f38>] (kfree+0xf8/0x228) from [<c02921c4>] (release_nodes+0x1a8/0x248) |[<c02921c4>] (release_nodes+0x1a8/0x248) from [<c028f70c>] (__device_release_driver+0x98/0xf0) |[<c028f70c>] (__device_release_driver+0x98/0xf0) from [<c028f840>] (device_release_driver+0x24/0x34) |[<c028f840>] (device_release_driver+0x24/0x34) from [<c028ebe8>] (bus_remove_device+0x148/0x15c) |[<c028ebe8>] (bus_remove_device+0x148/0x15c) from [<c028d120>] (device_del+0x104/0x1c0) |[<c028d120>] (device_del+0x104/0x1c0) from [<c02911e4>] (platform_device_del+0x18/0xac) |[<c02911e4>] (platform_device_del+0x18/0xac) from [<c029179c>] (platform_device_unregister+0xc/0x18) |[<c029179c>] (platform_device_unregister+0xc/0x18) from [<bf1902fc>] (dsps_remove+0x20/0x4c [musb_dsps]) |[<bf1902fc>] (dsps_remove+0x20/0x4c [musb_dsps]) from [<c0290d7c>] (platform_drv_remove+0x1c/0x24) |[<c0290d7c>] (platform_drv_remove+0x1c/0x24) from [<c028f704>] (__device_release_driver+0x90/0xf0) |[<c028f704>] (__device_release_driver+0x90/0xf0) from [<c028f818>] (driver_detach+0xb4/0xb8) |[<c028f818>] (driver_detach+0xb4/0xb8) from [<c028e6e8>] (bus_remove_driver+0x98/0xec) |[<c028e6e8>] (bus_remove_driver+0x98/0xec) from [<c008fc70>] (SyS_delete_module+0x1e0/0x24c) |[<c008fc70>] (SyS_delete_module+0x1e0/0x24c) from [<c000e680>] (ret_fast_syscall+0x0/0x48) |---[ end trace d79045419a3e51ec ]--- The workqueue is only scheduled from the ep0 and never canceled in case the musb is removed before the work has a chance to run. Cc: stable@vger.kernel.org Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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- Oct 10, 2013
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Andrzej Pietrasiewicz authored
u_ms.ko is needed only together with usb_f_mass_storage.ko. Merge them. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
There are no more old interface users left. Remove it. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
Convert the legacy multi gadget to the new interface of f_mass_storage, so that later the compatibility layer in f_mass_storage can be removed. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
Convert the legacy multi gadget to the new interface of f_rndis, so that later the compatibility layer in f_rndis can be removed. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
Convert the legacy multi gadget to the new interface of f_ecm, so that later the compatibility layer in f_ecm can be removed. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
Convert the legacy acm_ms gadget to use the new function interface of f_mass_storage, so that later the compatibility layer in f_mass_storage can be removed. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
From this commit on f_mass_storage is available through configfs. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
This will be required by configfs integration. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
Show/store methods for sysfs attributes contain code which can be used also by configfs. Make them abstract the source the lun and rw_semaphore are taken from. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
Convert old mass_storage gadget to use the new interface of f_mass_storage so that later the compatibility layer in f_mass_storage can be removed. struct fsg_common is not known to mass_storage.c, so a setter method is added to f_mass_storage. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
Converting mass storage to the new function interface requires converting the USB mass storage's function code and its users. This patch converts the f_mass_storage.c to the new function interface. The file is now compiled into a separate usb_f_mass_storage.ko module. The old function interface is provided by means of a preprocessor conditional directives. After all users are converted, the old interface can be removed. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
fsg_common_init is a lengthy function. Factor a portion of it out. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
fsg_common_init is a lengthy function. Factor a portion of it out. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
fsg_common_init is a lengthy function. Factor portions of it out. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
fsg_common_init is a lengthy function. Factor a portion of it out. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz authored
fsg_common_init is a lengthy function. Factor portions of it out. Signed-off-by:
Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Felipe Balbi <balbi@ti.com>
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