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path: root/drivers/usb/dwc2
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2016-11-18usb: dwc2: gadget: DDMA transfer start and completeVahram Aharonyan1-13/+83
Update transfer starting dwc2_hsotg_start_req() routine with call of function dwc2_gadget_config_nonisoc_xfer_ddma() to fill descriptor chain. Add call of dwc2_gadget_get_xfersize_ddma() in dwc2_hsotg_handle_outdone() and dwc2_hsotg_complete_in() interrupt handlers for DDMA mode to get information on transferred data from descriptors instead of DXEPTSIZ. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: gadget: EP 0 specific DDMA programmingVahram Aharonyan1-5/+161
Add dwc2_gadget_set_ep0_desc_chain() function to switch between EP0 DDMA chains depend on the stage of control transfer. Include EP0 DDMA chain selection during ep_queue called from dwc2_hsotg_enqueue_setup() for setup stage. Selecting and filling DDMA chain for status phase as well - add calls of dwc2_gadget_set_ep0_desc_chain() and dwc2_gadget_config_nonisoc_xfer_ddma() functions. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Remove reading in of invalid propertyJohn Youn1-6/+1
This property was mistakenly added, then removed, so don't read it in. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: gadget: Add DDMA chain pointers to dwc2_hsotg_ep structureVahram Aharonyan2-2/+38
Add DMA descriptor members to the dwc2_hsotg_ep structure. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: gadget: Transfer length limit checking for DDMAVahram Aharonyan1-1/+31
Add dwc2_gadget_get_chain_limit() function and its call in transfer start routine to correctly estimate one go on transfer size if descriptor DMA mode is selected. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: host: Rename MAX_DMA_DESC_SIZE to HOST_DMA_NBYTES_LIMITVahram Aharonyan2-3/+3
Rename MAX_DMA_DESC_SIZE to HOST_DMA_NBYTES_LIMIT as it stores value of host DMA descriptor transfer bytes' limit. Values are different in case of gadget DMA descriptors. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: gadget: Add DMA descriptor chains for EP 0Vahram Aharonyan2-0/+67
Update dwc2_hsotg structure to add descriptor chains for EP 0: two DMA descriptors for Setup phase, per one for IN/OUT data and status phases. Add their allocation function dwc2_gadget_alloc_ctrl_desc_chains() and its call during gadget probe. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: gadget: Add DMA descriptor status quadlet fieldsVahram Aharonyan1-0/+37
Add device mode DMA transfer descriptor status quadlet field notations. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: gadget: Add descriptor DMA parameterVahram Aharonyan3-0/+19
Add a parameter for descriptor DMA and set it based on hardware capabilities. This won't actually be used by the gadget until later, when the descriptor DMA code is in place. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Make the DMA descriptor structure packedVahram Aharonyan1-1/+1
Make the DMA descriptor structure packed to guarantee alignment and size in memory. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Update DMA descriptor structureVahram Aharonyan4-29/+30
Rename DMA descriptor structure from dwc2_hcd_dma_desc to dwc2_dma_desc as it is applies to both host and gadget. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Deprecate g-use-dma bindingJohn Youn3-7/+15
This is not needed as the gadget now fully supports DMA and it can autodetect it. This was initially added because gadget DMA mode was only partially implemented so could not be automatically enabled. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Fix coverity issue in hcd_queue.cVardan Mikayelyan1-33/+36
This fixes the coverity issues related to unreachable code with debugging off. Signed-off-by: Vardan Mikayelyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Fix dead code in hcd.cVardan Mikayelyan1-5/+0
Because usb_pipetype() masks urb->pipe, the default case can never be hit. Remove it. This cleans up a coverity warning. Signed-off-by: Vardan Mikayelyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: gadget: Update for new usb_endpoint_maxp()Vardan Mikayelyan1-19/+23
Update the dwc2 driver for the new behavior of the usb_endpoint_maxp() and also use the new usb_endpoint_maxp_mult() helper function. This commit fixes failures in high-badwith ISOC transfer tests. Signed-off-by: Vardan Mikayelyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Add PCI propertiesVahram Aharonyan1-0/+19
Add device parameters handling in dwc2-pci similar what is done in dwc3. Signed-off-by: Vahram Aharonyan <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Get host DMA device propertiesJohn Youn2-31/+23
The driver will automatically enable host DMA and use it if available. This is consistent with the behavior of all existing platforms. Read in the "snps,host-dma-disable" device property to disable it. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Rename the dma_enable parameter to host_dmaJohn Youn4-51/+51
Rename it so that it is more consistent with the gadget dma parameter. It only affects host-mode operation so prefix it with "host". Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Move gadget settings into core_paramsJohn Youn3-91/+296
Move the gadget devicetree settings into the core_params structure and document them. Then set and check them in params.c, with the addition of some helper functions, and remove the equivalent code in gadget.c. Because these parameters came from the standalone s3c driver, they have a fixed default value rather than an autodetected one. Preserve and document this behavior to avoid any compatibility issues. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Rename host_rx_fifo_size hardware parameterJohn Youn2-6/+6
This hardware parameter is not host specific. It also applies to device mode. Drop the "host" from the name to make that clear. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Remove unnecessary prototypesJohn Youn2-235/+54
Remove the unnecessary prototypes for all the parameter setting functions and declare those functions 'static' in the params.c file. Also remove the duplicate documentation that went along with them. They are already documented as part of the params structure definition. Then move the constants that went along with the prototype into the structure. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Remove dwc2_set_all_params functionJohn Youn3-38/+44
Replace this by statically defining a function with defaults, and just assigning it. This will allow us to use parameters of any type and any default value. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Move parameter initialization into params.cJohn Youn3-23/+36
Consolidate and move all the parameter initialization code from the probe function to params.c. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Declare the core params struct staticallyJohn Youn10-181/+176
This makes it consistent with the hw_params struct and simplifies the memory management for future refactoring. Fix up usage in all files. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Add params.c fileJohn Youn5-1089/+1133
Add a params.c file and move all driver parameter code there, including all the static parameter definitions. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Remove unused hardware parameterJohn Youn1-1/+0
The dma_desc_fs_enable does not correspond to any hardware parameter and is unused. Remove it. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-18usb: dwc2: Remove unnecessary kfreeJohn Youn1-1/+0
This shouldn't be freed by the HCD as it is owned by the core and allocated with devm_kzalloc. Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-11-03usb: dwc2: cleanup with list_first_entry_or_null()Masahiro Yamada1-4/+2
The combo of list_empty() check and return list_first_entry() can be replaced with list_first_entry_or_null(). Signed-off-by: Masahiro Yamada <[email protected]> Acked-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-10-18Revert "usb: dwc2: gadget: fix TX FIFO size and address initialization"John Youn2-8/+46
This reverts commit aa381a7259c3 ("usb: dwc2: gadget: fix TX FIFO size and address initialization"). The original commit removed the FIFO size programming per endpoint. The DPTXFSIZn register is also used for DIEPTXFn and the SIZE field is r/w in dedicated fifo mode. So it isn't appropriate to simply remove this initialization as it might break existing behavior. Also, some cores might not have enough fifo space to handle the programming method used in the reverted patch, resulting in fifo initialization failure. Signed-off-by: John Youn <[email protected]> Cc: Robert Baldyga <[email protected]> Cc: Stefan Wahren <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-10-18Revert "usb: dwc2: gadget: change variable name to more meaningful"John Youn1-4/+4
This reverts commit ba48eab8866c ("usb: dwc2: gadget: change variable name to more meaningful"). This is needed to cleanly revert commit aa381a7259c3 ("usb: dwc2: gadget: fix TX FIFO size and address initialization") which may cause regressions on some platforms. Signed-off-by: John Youn <[email protected]> Cc: Robert Baldyga <[email protected]> Cc: Stefan Wahren <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-10-17usb: dwc2: Add msleep for host-onlyHeiko Stuebner1-1/+10
Although a host-only controller should not have any associated delay, some rockchip SOC platforms will not show the correct host-values of registers until after a delay. So add a 50 ms sleep when in host-only mode. Signed-off-by: John Youn <[email protected]> Signed-off-by: Heiko Stuebner <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-10-07Merge tag 'armsoc-late' of ↵Linus Torvalds1-0/+34
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC late DT updates from Arnd Bergmann: "These updates have been kept in a separate branch mostly because they rely on updates to the respective clk drivers to keep the shared header files in sync. - The Renesas r8a7796 (R-Car M3-W) platform gets added, this is an automotive SoC similar to the ⅹ8a7795 chip we already support, but the dts changes rely on a clock driver change that has been merged for v4.9 through the clk tree. - The Amlogic meson-gxbb (S905) platform gains support for a few drivers merged through our tree, in particular the network and usb driver changes are required and included here, and also the clk tree changes. - The Allwinner platforms have seen a large-scale change to their clk drivers and the dts file updates must come after that. This includes the newly added Nextthing GR8 platform, which is derived from sun5i/A13. - Some integrator (arm32) changes rely on clk driver changes. - A single patch for lpc32xx has no such dependency but wasn't added until just before the merge window" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (99 commits) ARM: dts: lpc32xx: add device node for IRAM on-chip memory ARM: dts: sun8i: Add accelerometer to polaroid-mid2407pxe03 ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board ARM: dts: sun8i: add pinmux for UART1 at PG dts: sun8i-h3: add I2C0-2 peripherals to H3 SOC dts: sun8i-h3: add pinmux definitions for I2C0-2 dts: sun8i-h3: associate exposed UARTs on Orange Pi Boards dts: sun8i-h3: split off RTS/CTS for UART1 in seperate pinmux dts: sun8i-h3: add pinmux definitions for UART2-3 ARM: dts: sun9i: a80-optimus: Disable EHCI1 ARM: dts: sun9i: cubieboard4: Add AXP806 PMIC device node and regulators ARM: dts: sun9i: a80-optimus: Add AXP806 PMIC device node and regulators ARM: dts: sun9i: cubieboard4: Declare AXP809 SW regulator as unused ARM: dts: sun9i: a80-optimus: Declare AXP809 SW regulator as unused ARM: dts: sun8i: Add touchscreen node for sun8i-a33-ga10h ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2809pxe04 ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2407pxe03 ARM: dts: sun8i: Add touchscreen node for sun8i-a23-inet86dz ARM: dts: sun8i: Add touchscreen node for sun8i-a23-gt90h ARM64: dts: meson-gxbb-vega-s95: Enable USB Nodes ...
2016-09-14Merge tag 'usb-for-v4.9' of ↵Greg Kroah-Hartman4-86/+135
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: patches for v4.9 merge window This time around we have 92 non-merge commits. Most of the changes are in drivers/usb/gadget (40.3%) with drivers/usb/gadget/function being the most active directory (27.2%). As for UDC drivers, only dwc3 (26.5%) and dwc2 (12.7%) have really been active. The most important changes for dwc3 are better support for scatterlist and, again, throughput improvements. While on dwc2 got some minor stability fixes related to soft reset and FIFO usage. Felipe Tonello has done some good work fixing up our f_midi gadget and Tal Shorer has implemented a nice API change for our ULPI bus. Apart from these, we have our usual set of non-critical fixes, spelling fixes, build warning fixes, etc.
2016-09-14usb: dwc2: add support for Meson8b and GXBB SoCsJerome Brunet1-0/+34
Add compatible strings for amlogic Meson8b and GXBB SoCs with the corresponding configuration parameters. Signed-off-by: Jerome Brunet <[email protected]> Signed-off-by: Martin Blumenstingl <[email protected]> Acked-by: John Youn <[email protected]> Signed-off-by: Kevin Hilman <[email protected]>
2016-09-08usb: dwc2: Properly account for the force mode delaysJohn Youn1-17/+14
When a force mode bit is set and the IDDIG debounce filter is enabled, there is a delay for the forced mode to take effect. This delay is due to the IDDIG debounce filter and is variable depending on the platform's PHY clock speed. To account for this delay we can poll for the expected mode. On a clear force mode, since we don't know what mode to poll for, delay for a fixed 100 ms. This is the maximum delay based on the slowest PHY clock speed. Tested-by: Stefan Wahren <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-09-08usb: dwc2: Add delay to core soft resetJohn Youn3-0/+97
Add a delay to the core soft reset function to account for the IDDIG debounce filter. If the current mode is host, either due to the force mode bit being set (which persists after core reset) or the connector id pin, a core soft reset will temporarily reset the mode to device and a delay from the IDDIG debounce filter will occur before going back to host mode. Tested-by: Stefan Wahren <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-09-08usb: dwc2: gadget: Only initialize device if in device modeJohn Youn1-2/+5
In dwc2_hsotg_udc_start(), don't initialize the controller for device mode unless we are actually in device mode. Tested-by: Heiko Stuebner <[email protected]> Tested-by: Stefan Wahren <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-09-05Merge 4.8-rc5 into usb-testingGreg Kroah-Hartman2-0/+23
We want the USB fixes in here for testing and merge issues. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2016-08-31usb: dwc2: gadget: free TX FIFO after killing requestsRobert Baldyga1-4/+4
As kill_all_requests() potentially flushes TX FIFO, we should should free FIFO after calling it. Otherwise FIFO could stay unflushed properly. Signed-off-by: Robert Baldyga <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-31usb: dwc2: gadget: remove dead code from dwc2_hsotg_ep_enable()Robert Baldyga1-12/+1
Since FIFO is always freed in dwc2_hsotg_ep_disable(), ep->fifo_index is always 0 in dwc2_hsotg_ep_enable(), hence code inside if() block is never executed. Signed-off-by: Robert Baldyga <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-31usb: dwc2: gadget: change variable name to more meaningfulRobert Baldyga1-4/+4
Since we handle FIFOs and endpoint separately, using variable named 'ep' in context of FIFO is misleading, hence we rename it to 'fifo'. Signed-off-by: Robert Baldyga <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-31usb: dwc2: gadget: fix TX FIFO size and address initializationRobert Baldyga2-46/+8
According to DWC2 documentation, DPTxFSize field of DPTXFSIZn register is read only, which means that software cannot change FIFO size. Register description says: "The value of this register is the Largest Device Mode Periodic Tx Data FIFO Depth (parameter OTG_TX_DPERIO_DFIFO_DEPTH_n), as specified during coreConsultant configuration." That means, that we have to setup only FIFO start addresses (DPTxFStAddr), taking into account reset values of DPTxFSize. Initialize FIFO start addresses properly and remove unneeded core related to incorrect FIFO size initialization. Signed-off-by: Robert Baldyga <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-31usb: dwc2: gadget: use ep->fifo_index in context of FIFO registersRobert Baldyga1-2/+3
In context of FIFO registers we use ep->fifo_index instead of ep->index. Signed-off-by: Robert Baldyga <[email protected]> Signed-off-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-30usb: dwc2: gadget: don't print on ENOMEMWolfram Sang1-6/+2
All kmalloc-based functions print enough information on failures. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2016-08-29usb: dwc2: gadget: don't print on ENOMEMWolfram Sang1-6/+2
All kmalloc-based functions print enough information on failures. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-25usb: dwc2: Remove deprecated create_singlethread_workqueueBhaktipriya Shridhar1-1/+1
alloc_ordered_workqueue replaces the deprecated create_singlethread_workqueue. There are multiple work items on the work queue, which require ordering. Hence, an ordered workqueue has been used. The workqueue "wq_otg" is not being used on a memory reclaim path. Hence, WQ_MEM_RECLAIM has not been set. Acked-by: John Youn <[email protected]> Signed-off-by: Bhaktipriya Shridhar <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-22usb: dwc2: Add reset control to dwc2Dinh Nguyen2-0/+23
Allow for platforms that have a reset controller driver in place to bring the USB IP out of reset. Signed-off-by: Dinh Nguyen <[email protected]> Acked-by: John Youn <[email protected]> Tested-by: Stefan Wahren <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-08-09usb: dwc2: Remove deprecated create_singlethread_workqueueBhaktipriya Shridhar1-1/+1
alloc_ordered_workqueue replaces the deprecated create_singlethread_workqueue. There are multiple work items on the work queue, which require ordering. Hence, an ordered workqueue has been used. The workqueue "wq_otg" is not being used on a memory reclaim path. Hence, WQ_MEM_RECLAIM has not been set. Signed-off-by: Bhaktipriya Shridhar <[email protected]> Acked-by: Tejun Heo <[email protected]> Acked-by: John Youn <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2016-06-29USB: dwc2-usb: add USB_GADGET dependencyArnd Bergmann1-0/+1
The driver selects NOP_USB_XCEIV, which can only be built-in if USB_GADGET is either disabled or also built-in, so with USB_DWC2_PCI=y and USB_GADGET=m, NOP_USB_XCEIV is also built-in and we get this link error: drivers/usb/built-in.o: In function `nop_set_peripheral': (text+0x1927c): undefined reference to `usb_gadget_vbus_connect' drivers/usb/built-in.o: In function `nop_gpio_vbus_thread': (text+0x197a0): undefined reference to `usb_gadget_vbus_connect' (text+0x19830): undefined reference to `usb_gadget_vbus_disconnect' This adds the same dependency for the dwc2 driver to avoid that broken configuration. Signed-off-by: Arnd Bergmann <[email protected]> Acked-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2016-06-29usb: dwc2: add printf attribute to cat_printf()Nicolas Iooss1-1/+2
As cat_printf() uses printf format strings in its parameters, adding __printf attribute allows the compiler to detect at compile-time some errors related to format strings (with -Wformat warning flag). Signed-off-by: Nicolas Iooss <[email protected]> Acked-by: John Youn <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
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