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path: root/drivers/usb/dwc2
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2017-01-16usb: dwc2: host: fix Wmaybe-uninitialized warningNicholas Mc Guire1-2/+2
Uninitialized char* causes a sparse build-warning, fix it up by initializing it to NULL. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-16usb: dwc2: gadget: Fix GUSBCFG.USBTRDTIM valueAmelie Delaunay1-2/+2
USBTrdTim must be programmed to 0x5 when phy has a UTMI+ 16-bit wide interface or 0x9 when it has a 8-bit wide interface. GUSBCFG reset value (Value After Reset: 0x1400) sets USBTrdTim to 0x5. In case of 8-bit UTMI+, without clearing GUSBCFG.USBTRDTIM mask, USBTrdTim results in 0xD (0x5 | 0x9). That's why we need to clear GUSBCFG.USBTRDTIM mask before setting USBTrdTim value, to ensure USBTrdTim is correctly set in case of 8-bit UTMI+. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-12usb: dwc2: Avoid suspending if we're in gadget modeJohn Stultz1-0/+3
I've found when booting HiKey with the usb gadget cable attached if I then try to connect via adb, I get an infinite spew of: dwc2 f72c0000.usb: dwc2_hsotg_ep_sethalt(ep ffffffc0790ecb18 ep1out, 0) dwc2 f72c0000.usb: dwc2_hsotg_ep_sethalt(ep ffffffc0790eca18 ep1in, 0) It seems that the usb autosuspend is suspending the bus shortly after bootup when the gadget cable is attached. So when adbd then tries to use the device, it doesn't work and it then tries to restart it over and over via the ep_sethalt calls (via FUNCTIONFS_CLEAR_HALT ioctl). Chen Yu suggested this patch to avoid suspending if we're in device mode, and it avoids the problem. Cc: Wei Xu <xuwei5@hisilicon.com> Cc: Guodong Xu <guodong.xu@linaro.org> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: John Youn <johnyoun@synopsys.com> Cc: Douglas Anderson <dianders@chromium.org> Cc: Chen Yu <chenyu56@huawei.com> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Suggested-by: Chen Yu <chenyu56@huawei.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-12usb: dwc2: use u32 for DT binding parametersLeo Yan2-7/+7
Commit 05ee799f2021 ("usb: dwc2: Move gadget settings into core_params") changes to type u16 for DT binding "g-rx-fifo-size" and "g-np-tx-fifo-size" but use type u32 for "g-tx-fifo-size". Finally the the first two parameters cannot be passed successfully with wrong data format. This is found the data transferring broken on 96boards Hikey. This patch is to change all parameters to u32 type, and verified on Hikey board the DT parameters can pass successfully. [johnyoun: minor rebase] Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: John Youn <johnyoun@synopsys.com> Tested-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-12usb: dwc2: gadget: Fix DMA memory freeingVardan Mikayelyan1-11/+3
Remove DMA memory free from EP disable flow by replacing dma_alloc_coherent with dmam_alloc_coherent. Tested-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-02usb: dwc2: fix flags for DMA descriptor allocation in dwc2_hsotg_ep_enableMarek Szyprowski1-1/+1
dwc2_hsotg_ep_enable can be called from interrupt context, so all allocations should be done with GFP_ATOMIC flags. This fixes following issue on ARM architecture: [<c010d830>] (unwind_backtrace) from [<c010a51c>] (show_stack+0x10/0x14) [<c010a51c>] (show_stack) from [<c032930c>] (dump_stack+0x74/0x94) [<c032930c>] (dump_stack) from [<c011cd30>] (__warn+0xd4/0x100) [<c011cd30>] (__warn) from [<c011cd7c>] (warn_slowpath_null+0x20/0x28) [<c011cd7c>] (warn_slowpath_null) from [<c0187e04>] (smp_call_function_many+0xcc/0x2a4) [<c0187e04>] (smp_call_function_many) from [<c0188014>] (on_each_cpu_mask+0x38/0xa8) [<c0188014>] (on_each_cpu_mask) from [<c01ddfe0>] (start_isolate_page_range+0x134/0x1b8) [<c01ddfe0>] (start_isolate_page_range) from [<c01a3c14>] (alloc_contig_range+0xac/0x2f8) [<c01a3c14>] (alloc_contig_range) from [<c01de3e4>] (cma_alloc+0xe0/0x1a8) [<c01de3e4>] (cma_alloc) from [<c0110acc>] (__alloc_from_contiguous+0x38/0xe0) [<c0110acc>] (__alloc_from_contiguous) from [<c0110ba4>] (cma_allocator_alloc+0x30/0x38) [<c0110ba4>] (cma_allocator_alloc) from [<c0111034>] (__dma_alloc+0x1c0/0x2c8) [<c0111034>] (__dma_alloc) from [<c01111b4>] (arm_dma_alloc+0x3c/0x48) [<c01111b4>] (arm_dma_alloc) from [<c04ad800>] (dwc2_hsotg_ep_enable+0xec/0x46c) [<c04ad800>] (dwc2_hsotg_ep_enable) from [<c04da610>] (usb_ep_enable+0x2c/0x3c) [<c04da610>] (usb_ep_enable) from [<c04dc0c0>] (ecm_set_alt+0xa8/0x154) [<c04dc0c0>] (ecm_set_alt) from [<c04d678c>] (composite_setup+0xd74/0x1540) [<c04d678c>] (composite_setup) from [<c04ae048>] (dwc2_hsotg_complete_setup+0xb8/0x370) [<c04ae048>] (dwc2_hsotg_complete_setup) from [<c04d987c>] (usb_gadget_giveback_request+0xc/0x10) [<c04d987c>] (usb_gadget_giveback_request) from [<c04acafc>] (dwc2_hsotg_complete_request+0x78/0x128) [<c04acafc>] (dwc2_hsotg_complete_request) from [<c04aed28>] (dwc2_hsotg_epint+0x69c/0x81c) [<c04aed28>] (dwc2_hsotg_epint) from [<c04af6c4>] (dwc2_hsotg_irq+0xfc/0x748) [<c04af6c4>] (dwc2_hsotg_irq) from [<c0163264>] (__handle_irq_event_percpu+0x58/0x140) [<c0163264>] (__handle_irq_event_percpu) from [<c0163368>] (handle_irq_event_percpu+0x1c/0x58) [<c0163368>] (handle_irq_event_percpu) from [<c01633dc>] (handle_irq_event+0x38/0x5c) [<c01633dc>] (handle_irq_event) from [<c01666e4>] (handle_fasteoi_irq+0xc4/0x19c) [<c01666e4>] (handle_fasteoi_irq) from [<c0162a2c>] (generic_handle_irq+0x18/0x28) [<c0162a2c>] (generic_handle_irq) from [<c0162b40>] (__handle_domain_irq+0x6c/0xe4) [<c0162b40>] (__handle_domain_irq) from [<c0101470>] (gic_handle_irq+0x50/0x9c) [<c0101470>] (gic_handle_irq) from [<c010b00c>] (__irq_svc+0x6c/0xa8) Fixes: 5f54c54b0ba83 ("usb: dwc2: gadget: Add DDMA chain pointers to dwc2_hsotg_ep structure") Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-02usb: dwc2: gadget: fix default value for gadget-dma-descStefan Wahren1-1/+1
The current default for gadget DMA descriptor results on bcm2835 in a unnecessary error message: Invalid value 1 for param gadget-dma-desc So fix this by using hw->dma_desc_enable as default value. Fixes: dec4b55677e ("usb: dwc2: gadget: Add descriptor DMA parameter") Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-02usb: dwc2: fix default value for DMA supportStefan Wahren1-2/+2
The current defaults for DMA results on a non-DMA platform in a unnecessary error message: Invalid value 0 for param gadget-dma So fix this by using dma_capable as default value. Fixes: 9962b62f1be ("usb: dwc2: Deprecate g-use-dma binding") Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-02usb: dwc2: fix dwc2_get_device_property for u8 and u16Stefan Wahren1-12/+0
According to the Devicetree ePAPR [1] the datatypes u8 and u16 are not defined. So using device_property_read_u16() would result in a partial read of a 32-bit big-endian integer which is not intended. So we better read the complete 32-bit value. This fixes a regression on bcm2835 where the values for g-rx-fifo-size and g-np-tx-fifo-size always read as zero: Invalid value 0 for param g-rx-fifo-size Invalid value 0 for param g-np-tx-fifo-size [1] - http://elinux.org/images/c/cf/Power_ePAPR_APPROVED_v1.1.pdf Fixes: 05ee799f202 ("usb: dwc2: Move gadget settings into core_params") Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-02usb: dwc2: Do not set host parameter in peripheral modeStefan Wahren1-6/+6
Since commit "usb: dwc2: Improve handling of host and device hwparams" the host mode specific hardware parameter aren't initialized in peripheral mode from the register settings anymore. So we better do not set them in this case which avoids the following warnings on bcm2835: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration. 512 invalid for host_perio_tx_fifo_size. Check HW configuration. Fixes: 55e1040e424b ("usb: dwc2: Improve handling of host and device hwparams") Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Move functions from header to sourceRazmik Karapetyan2-34/+29
Removed extern specifier from dwc2_host_start(), dwc2_host_disconnect() and dwc2_host_hub_info() functions. Moved those functions from header to source. Then make them static. Signed-off-by: Razmik Karapetyan <razmik@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Fix fifo_show() functionalityRazmik Karapetyan1-1/+1
NPTXFIFO's start address is showing 0x03000000 instead of 0x00000800. Replaced val & FIFOSIZE_DEPTH_MASK by val & FIFOSIZE_STARTADDR_MASK in fifo_show() function. Signed-off-by: Razmik Karapetyan <razmik@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Remove unnecessary request length checkingRazmik Karapetyan1-10/+0
Remove request length checking from dwc2_hsotg_unmap_dma() and dwc2_hsotg_map_dma(). That checking is done in functions called from those functions, usb_gadget_unmap_request_by_dev() and usb_gadget_map_request_by_dev() respectively, so it's unnecessary. Signed-off-by: Razmik Karapetyan <razmik@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Fix Control Write issue in DMA modeRazmik Karapetyan1-0/+7
While sending zlp for DWC2_EP0_STATUS_IN EP direction was changed to IN. Change it back to complete OUT transfer request. This affects only on DMA mode, because DMA buffer map/unmap function is direction sensitive. Signed-off-by: Razmik Karapetyan <razmik@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Don't program DMA address for 0 length requestRazmik Karapetyan1-1/+1
Check the request length in dwc2_hsotg_start_req() function. If length == 0, do not write DMA address to control register. Signed-off-by: Razmik Karapetyan <razmik@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Stop Complete Splits after Data PID == 0Sevak Arakelyan1-1/+6
Stop sending complete split requests in case of ISOC IN split transfers after getting data with PID0. Otherwise we will get a NYET for each additional IN token. Signed-off-by: Sevak Arakelyan <sevaka@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: add amcc,dwc-otg supportChristian Lamparter1-0/+1
This patch adds support for the "amcc,usb-otg" device which is found in the PowerPC Canyonlands' dts. The device definition was added by: commit c89b3458d8cc ("powerpc/44x: Add USB DWC DTS entry to Canyonlands board") but without any driver support as the dwc2 driver wasn't available at that time. Note: The system can't use the generic "snps,dwc2" compatible because of the special ahbcfg configuration. The default GAHBCFG_HBSTLEN_INCR4 of snps,dwc2 can cause a system hang when the USB and SATA is used concurrently. Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: fixes host_dma logicChristian Lamparter1-3/+2
This patch moves the the host_dma initialization before dwc2_set_param_dma_desc_enable() and dwc2_set_param_dma_desc_fs_enable(). The reason being that both function need it. Fixes: 1205489cee75bf39 ("usb: dwc2: Get host DMA device properties") Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Add new core parameter for low speedVardan Mikayelyan4-11/+33
Added new core param for low speed, which can be used only when SNPSID is equal to DWC2_CORE_FS_IOT. When LS mode is enabled, we are restricting ep types and providing to upper layer only INTR and CTRL endpoints. Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Program ep0_mps for LSVardan Mikayelyan1-0/+2
When device is enumerated in LS we should program ep0_mps accordingly. USB2 spec says that in LS mode, control ep mps must be 8. Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Add IOT device IDs, configure core accordinglyVardan Mikayelyan2-1/+26
Add new device IDs for IOT gadget. Done changes in probe to configure core accordingly depending on device ID value. Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Add support of dedicated full-speed PHY interfaceVahram Aharonyan1-5/+21
Do modifications in dwc2_hsotg_core_init_disconnected() function to enable USB 1.1 Full-Speed Serial Transceiver Select in GUSBCFG register if corresponding speed and PHY types are chosen. Adjust device speed selection in DCFG register as well. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Disable enabled HW endpoint in dwc2_hsotg_ep_disableVahram Aharonyan1-89/+93
Check if endpoint is enabled during dwc2_hsotg_ep_disable() function processing and call dwc2_hsotg_ep_stop_xfr() to disable it and flush associated FIFO. Move dwc2_hsotg_ep_stop_xfr() and dwc2_hsotg_wait_bit_set() functions upper before dwc2_hsotg_ep_enable and dwc2_hsotg_ep_disable function definitions. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Correct dwc2_hsotg_ep_stop_xfr() functionVahram Aharonyan1-23/+41
Correct dwc2_hsotg_ep_stop_xfr() function to follow dwc2 programming guide for setting NAK on specific endpoint, disabling it and flushing corresponding FIFO. Current code does not take into account whether core acts in shared or dedicated FIFO mode, current endpoint is periodic or not. It does not clear EPDISBLD interrupt after programming of DXEPCTL_EPDIS, does not flush shared TX FIFO and tries to clear global out NAK in wrong manner instead of setting DCTL_CGOUTNAK. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: For DDMA parse setup only after SetUp interruptVahram Aharonyan1-0/+10
Tests with various hosts show that depend on time difference between host sending SETUP packet and IN/OUT token SW could get Xfercomplete interrupt without SetUp interrupt. On the other hand, SW should parse received SETUP packet only after ensuring that Host has moved to either Data or Status stage of control transfer. For this purpose added checking in the dwc2_hsotg_epint() function to not handle xfercomplete and postpone SETUP packet analysis till SW's getting of setup phase done interrupt. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Adjust ISOC OUT request's actual len for DDMAVahram Aharonyan1-0/+4
In DDMA mode if programmed ISOC OUT transfer length is not DWORD aligned, after closing descriptor HW leaves value of 4 - (ureq->length % 4) in the RX bytes. This is caused because DMA works using 4B chunks. Example: if length = 9 and all 9 bytes were received from the bus, after xfercomplete rx_bytes value is 3. Hence add this value to the amount of transferred bytes. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Enable the BNA interruptVahram Aharonyan2-0/+5
Enable the BNA (Buffer Not Available) interrupt in descriptor DMA mode. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Start and complete DDMA isoc transfersVahram Aharonyan1-5/+304
For DDMA mode in case of isochronous transfers completion performed differently than other transfer types. This is because each usb request was mapped to one descriptor in the chain and SW gets xfercomplete interrupt on all descriptors. The endpoint remains enabled until HW processes last descriptor with "L" bit set or BNA interrupt gets asserted for IN and OUT endpoints correspondingly. Add function dwc2_gadget_complete_isoc_request_ddma() - completes one isochronous request taken from endpoint's queue. Add function dwc2_gadget_start_next_isoc_ddma() - tries to restart isochronous endpoint if requests are pending. Check for EPENA. If the endpoint was disabled, try to restart it after programming descriptor chain prepared by SW earlier, switch SW to fill the other half of chain. Add function dwc2_gadget_fill_isoc_desc() - initializes DMA descriptor for isochronous transfer based on the received request data and endpoint characteristics. Added function dwc2_gadget_start_isoc_ddma() - prepare DMA chain for isochronous transfer in DDMA, programs corresponding DMA address to DEPDMA, enables the endpoint. This function is called once SW decides to start isochronous IN or OUT transfer depend on reception of NAK or OUTTknEPdis interrupts indicating first isochronous token arrival from host. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: In DDMA keep incompISOOUT and incompISOIN maskedVahram Aharonyan1-2/+4
In DDMA mode incompISOOUT should be masked, similar as Bulk Out - XferCompl and BNA should be handled. incompISOIN is not valid in DDMA and is not getting asserted. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Add DDMA isoc related fields to dwc2_hsotg_epVahram Aharonyan2-0/+7
Preparing for isochronous transfers support adding in DDMA mode. In DDMA isochronous transfers are handled differently compared to Slave and BDMA modes. This is caused by fact that isoc requests contain data for one frame/microframe. HW descriptor should contain data of one frame/microframe as well. Hence each DMA descriptor in the chain will correspond to one usb request. Decided to divide endpoints descriptor chain to two halves - while one will be processed by HW, other one will be under SW control. First part will be passed to HW once ISOC traffic needs to be started. In parallel to HW's work SW will keep creating new entries in the other half of chain if new requests arrive in ep_queue routine. This will allow passing of already pre-prepared descriptors to HW immediately after endpoint gets disabled. The endpoint should be disabled once HW closes descriptor with "L" bit set. Afterwards SW will switch to use first part of chain if more requests are arriving. Add two members to the dwc2_hsotg_ep structure to be used in isochronous transfers' handling in DDMA mode: -isoc_chain_num - indicates which half of EP descriptor chain can be used by SW to add new queued requests while HW is processing other half. -next_desc - index which points to next not yet programmed descriptor in the half of descriptor chain which is under SW control. Also add initialization of these fields in function dwc2_hsotg_ep_enable(). Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Enable descriptor DMA modeVahram Aharonyan2-2/+9
Add DCFG register field macro for descriptor DMA mode and update core initialization routine to set that bit accordingly. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Start DDMA IN status phase in StsPhseRcvd handlerVahram Aharonyan1-2/+9
In DDMA mode of operation IN status phase of control write transfer should start after getting StsPhseRcvd interrupt. This interrupt is issued by HW once host starts to send IN tokens after data stage. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: gadget: Fixes for StsPhseRcvd interruptVahram Aharonyan1-6/+7
The StsPhseRcvd interrupt should not be enabled in slave mode. Also move the StsPhsRcvd interrupt checking in the endpoint interrupt handler to the correct order according to the databook. The interrupt itself will be implemented in a later commit. Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <vahrama@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-05 18:46:28 +0000