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2021-05-27usb: cdns3: cdnsp-gadget: Provide function name for 'cdnsp_find_next_ext_cap()'Lee Jones1-1/+2
Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/cdnsp-gadget.c:59: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Cc: Pawel Laszczak <pawell@cadence.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-24-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdns3: cdns3-gadget: Provide correct function naming for ↵Lee Jones1-1/+1
'__cdns3_gadget_ep_queue()' Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/cdns3-gadget.c:2499: warning: expecting prototype for cdns3_gadget_ep_queue(). Prototype was for __cdns3_gadget_ep_queue() instead Cc: Peter Chen <peter.chen@kernel.org> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@kernel.org> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Pawel Jez <pjez@cadence.com> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-21-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdns3: cdns3-imx: File headers are not good candidates for kernel-docLee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/cdns3-imx.c:21: warning: expecting prototype for cdns3(). Prototype was for USB3_CORE_CTRL1() instead Cc: Peter Chen <peter.chen@kernel.org> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@kernel.org> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: NXP Linux Team <linux-imx@nxp.com> Cc: linux-usb@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-11-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdns3: cdns3-ep0: Fix a few kernel-doc formatting issuesLee Jones1-3/+3
Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/cdns3-ep0.c:680: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-ep0.c:775: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-ep0.c:868: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Cc: Peter Chen <peter.chen@kernel.org> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@kernel.org> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Pawel Jez <pjez@cadence.com> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-10-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdns3: cdns3-ti: File headers are not good candidates for kernel-docLee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/cdns3-ti.c:20: warning: expecting prototype for cdns3(). Prototype was for USBSS_PID() instead Cc: Peter Chen <peter.chen@kernel.org> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@kernel.org> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-9-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdns3: cdns3-gadget: Fix a bunch of kernel-doc related formatting issuesLee Jones1-17/+17
Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/cdns3-gadget.c:163: warning: expecting prototype for select_ep(). Prototype was for cdns3_select_ep() instead drivers/usb/cdns3/cdns3-gadget.c:2025: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2224: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2247: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2264: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2399: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2489: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2589: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2656: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2677: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2722: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2768: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2877: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2923: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/cdns3/cdns3-gadget.c:2986: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Cc: Peter Chen <peter.chen@kernel.org> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@kernel.org> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Pawel Jez <pjez@cadence.com> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-8-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdns3: cdns3-plat: Fix incorrect naming of function 'cdns3_plat_remove()'Lee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/cdns3-plat.c:179: warning: expecting prototype for cdns3_remove(). Prototype was for cdns3_plat_remove() instead Cc: Peter Chen <peter.chen@kernel.org> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@kernel.org> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-5-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdns3: core: Fix a couple of incorrectly documented function namesLee Jones1-2/+2
Fixes the following W=1 kernel build warning(s): drivers/usb/cdns3/core.c:342: warning: expecting prototype for cdsn3_role_get(). Prototype was for cdns_role_get() instead drivers/usb/cdns3/core.c:428: warning: expecting prototype for cdns_probe(). Prototype was for cdns_init() instead Cc: Peter Chen <peter.chen@kernel.org> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@kernel.org> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210526130037.856068-2-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-27usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handlerPawel Laszczak1-3/+4
Patch fixes the following critical issue caused by deadlock which has been detected during testing NCM class: smp: csd: Detected non-responsive CSD lock (#1) on CPU#0 smp: csd: CSD lock (#1) unresponsive. .... RIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0 RSP: 0018:ffffbc494011cde0 EFLAGS: 00000002 RAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0 Call Trace: <IRQ> do_raw_spin_lock+0xc0/0xd0 _raw_spin_lock_irqsave+0x95/0xa0 cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci] usb_ep_queue+0x35/0x110 eth_start_xmit+0x220/0x3d0 [u_ether] ncm_tx_timeout+0x34/0x40 [usb_f_ncm] ? ncm_free_inst+0x50/0x50 [usb_f_ncm] __hrtimer_run_queues+0xac/0x440 hrtimer_run_softirq+0x8c/0xb0 __do_softirq+0xcf/0x428 asm_call_irq_on_stack+0x12/0x20 </IRQ> do_softirq_own_stack+0x61/0x70 irq_exit_rcu+0xc1/0xd0 sysvec_apic_timer_interrupt+0x52/0xb0 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:do_raw_spin_trylock+0x18/0x40 RSP: 0018:ffffbc494138bda8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000 _raw_spin_lock+0x3d/0x70 ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci] ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci] ? irq_thread+0xa0/0x1c0 irq_thread_fn+0x28/0x60 irq_thread+0x105/0x1c0 ? __kthread_parkme+0x42/0x90 ? irq_forced_thread_fn+0x90/0x90 ? wake_threads_waitq+0x30/0x30 ? irq_thread_check_affinity+0xe0/0xe0 kthread+0x12a/0x160 ? kthread_park+0x90/0x90 ret_from_fork+0x22/0x30 The root cause of issue is spin_lock/spin_unlock instruction instead spin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler function. Cc: stable@vger.kernel.org Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <pawell@cadence.com> Link: https://lore.kernel.org/r/20210526060527.7197-1-pawell@gli-login.cadence.com Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-05-25usb: cdns3: Enable TDL_CHK only for OUT epSanket Parmar1-5/+3
ZLP gets stuck if TDL_CHK bit is set and TDL_FROM_TRB is used as TDL source for IN endpoints. To fix it, TDL_CHK is only enabled for OUT endpoints. Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") Reported-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Sanket Parmar <sparmar@cadence.com> Link: https://lore.kernel.org/r/1621263912-13175-1-git-send-email-sparmar@cadence.com Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-05-21USB: cdnsp: drop irq-flags initialisationsJohan Hovold1-2/+2
There's no need to initialise irq-flags variables before saving the interrupt state. Cc: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210519093303.10789-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11usb: cdnsp: Fix lack of removing request from pending list.Pawel Laszczak1-7/+7
Patch fixes lack of removing request from ep->pending_list on failure of the stop endpoint command. Driver even after failing this command must remove request from ep->pending_list. Without this fix driver can stuck in cdnsp_gadget_ep_disable function in loop: while (!list_empty(&pep->pending_list)) { preq = next_request(&pep->pending_list); cdnsp_ep_dequeue(pep, preq); } Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <pawell@cadence.com> Link: https://lore.kernel.org/r/20210420042813.34917-1-pawell@gli-login.cadence.com Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-05-11usb: cdns3: Fix runtime PM imbalance on errorDinghao Liu1-1/+3
When cdns3_gadget_start() fails, a pairing PM usage counter decrement is needed to keep the counter balanced. Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Link: https://lore.kernel.org/r/20210412054908.7975-1-dinghao.liu@zju.edu.cn Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-05-11usb: cdnsp: Useless condition has been removedPawel Laszczak1-3/+2
This code generates a Smatch warning: drivers/usb/cdns3/cdnsp-mem.c:1085 cdnsp_mem_cleanup() warn: variable dereferenced before check 'pdev->dcbaa' (see line 1067) The unchecked dereference happens inside the function when we call: cdnsp_free_priv_device(pdev); But fortunately, the "pdev->dcbaa" pointer can never be NULL so it does not lead to a runtime issue. We can just remove the NULL check which silences the warning and makes the code consistent. Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Link: https://lore.kernel.org/r/20210505055854.40240-1-pawell@gli-login.cadence.com Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-05-11usb: cdns3: Corrected comment to align with kernel-doc commentSouptick Joarder1-1/+1
Minor update in comment. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/1619338565-4574-1-git-send-email-jrdr.linux@gmail.com Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdnsp: Fixes issue with Configure Endpoint commandPawel Laszczak2-5/+13
Patch adds flag EP_UNCONFIGURED to detect whether endpoint was unconfigured. This flag is set in cdnsp_reset_device after Reset Device command. Among others this command disables all non control endpoints. Flag is used in cdnsp_gadget_ep_disable to protect controller against invoking Configure Endpoint command on disabled endpoint. Lack of this protection in some cases caused that Configure Endpoint command completed with Context State Error code completion. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdnsp: remove redundant initialization of variable retColin Ian King1-1/+1
The variable ret is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: delete repeated clear operationsWang Qing1-1/+0
dma_alloc_coherent already zeroes out memory, so memset is not needed. Signed-off-by: Wang Qing <wangqing@vivo.com> Reviewed-by: Pawel Laszczak <pawell@cadence.com> Acked-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: Optimize DMA request buffer allocationSanket Parmar2-6/+25
dma_alloc_coherent() might fail on the platform with a small DMA region. To avoid such failure in cdns3_prepare_aligned_request_buf(), dma_alloc_coherent() is replaced with dma_alloc_noncoherent() to allocate aligned request buffer of dynamic length. Reported-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Sanket Parmar <sparmar@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: Use dma_pool_* api to alloc trb poolSanket Parmar2-23/+20
Allocation of DMA coherent memory in atomic context using dma_alloc_coherent() might fail on platforms with smaller DMA region. To fix it, dma_alloc_coherent() is replaced with dma_pool API to allocate a smaller chunk of DMA coherent memory for TRB rings. Reported-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Sanket Parmar <sparmar@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: fix static checker warning.Frank Li1-1/+1
The patch c450e48eb570: "usb: cdns3: add power lost support for system resume" from Feb 18, 2021, leads to the following static checker warning: drivers/usb/cdns3/core.c:551 cdns_resume() error: uninitialized symbol 'ret'. drivers/usb/cdns3/core.c 544 545 if (!role_changed) { 546 if (cdns->role == USB_ROLE_HOST) 547 ret = cdns_drd_host_on(cdns); 548 else if (cdns->role == USB_ROLE_DEVICE) 549 ret = cdns_drd_gadget_on(cdns); "ret" is uninitialized at else branch. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Frank Li <frank.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: imx: mark cdns_imx_system_resume as __maybe_unusedWei Yongjun1-1/+1
The function cdns_imx_system_resume() may have no callers depending on configuration, so it must be marked __maybe_unused to avoid harmless warning: drivers/usb/cdns3/cdns3-imx.c:378:12: warning: 'cdns_imx_system_resume' defined but not used [-Wunused-function] 378 | static int cdns_imx_system_resume(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~~ Fixes: 67982dfa59de ("usb: cdns3: imx: add power lost support for system resume") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: trace: delete the trace parameter for request->trbPeter Chen1-4/+1
It is not correct using %pa to print virtual address of request->trb, and it is hard to print its physical address due to the virtual address is zero before using. It could use index (start_trb/end_trb) to know the current trb position, so no matter virtual address or physical address for request-trb is not so meaningful. Reported-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: imx: add power lost support for system resumeFrank Li1-0/+34
imx need special handle when controller lost power Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Frank Li <frank.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: add power lost support for system resumeFrank Li5-3/+68
If the controller lost its power during the system suspend, we need to do all initialiation operations. Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Frank Li <frank.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-03-27usb: cdnsp: Fixes issue with dequeuing requests after disabling endpointPawel Laszczak1-0/+4
Patch fixes the bug: BUG: kernel NULL pointer dereference, address: 0000000000000050 PGD 0 P4D 0 Oops: 0002 [#1] SMP PTI CPU: 0 PID: 4137 Comm: uvc-gadget Tainted: G OE 5.10.0-next-20201214+ #3 Hardware name: ASUS All Series/Q87T, BIOS 0908 07/22/2014 RIP: 0010:cdnsp_remove_request+0xe9/0x530 [cdnsp_udc_pci] Code: 01 00 00 31 f6 48 89 df e8 64 d4 ff ff 48 8b 43 08 48 8b 13 45 31 f6 48 89 42 08 48 89 10 b8 98 ff ff ff 48 89 1b 48 89 5b 08 <41> 83 6d 50 01 41 83 af d0 00 00 00 01 41 f6 84 24 78 20 00 00 08 RSP: 0018:ffffb68d00d07b60 EFLAGS: 00010046 RAX: 00000000ffffff98 RBX: ffff9d29c57fbf00 RCX: 0000000000001400 RDX: ffff9d29c57fbf00 RSI: 0000000000000000 RDI: ffff9d29c57fbf00 RBP: ffffb68d00d07bb0 R08: ffff9d2ad9510a00 R09: ffff9d2ac011c000 R10: ffff9d2a12b6e760 R11: 0000000000000000 R12: ffff9d29d3fb8000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff9d29d3fb88c0 FS: 0000000000000000(0000) GS:ffff9d2adba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000050 CR3: 0000000102164005 CR4: 00000000001706f0 Call Trace: cdnsp_ep_dequeue+0x3c/0x90 [cdnsp_udc_pci] cdnsp_gadget_ep_dequeue+0x3f/0x80 [cdnsp_udc_pci] usb_ep_dequeue+0x21/0x70 [udc_core] uvcg_video_enable+0x19d/0x220 [usb_f_uvc] uvc_v4l2_release+0x49/0x90 [usb_f_uvc] v4l2_release+0xa5/0x100 [videodev] __fput+0x99/0x250 ____fput+0xe/0x10 task_work_run+0x75/0xb0 do_exit+0x370/0xb80 do_group_exit+0x43/0xa0 get_signal+0x12d/0x820 arch_do_signal_or_restart+0xb2/0x870 ? __switch_to_asm+0x36/0x70 ? kern_select+0xc6/0x100 exit_to_user_mode_prepare+0xfc/0x170 syscall_exit_to_user_mode+0x2a/0x40 do_syscall_64+0x43/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe969cf5dd7 Code: Unable to access opcode bytes at RIP 0x7fe969cf5dad. Problem occurs for UVC class. During disconnecting the UVC class disable endpoints and then start dequeuing all requests. This leads to situation where requests are removed twice. The first one in cdnsp_gadget_ep_disable and the second in cdnsp_gadget_ep_dequeue function. Patch adds condition in cdnsp_gadget_ep_dequeue function which allows dequeue requests only from enabled endpoint. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-03-13usb: cdnsp: Fixes incorrect value in ISOC TRBPawel Laszczak1-1/+4
Fixes issue with priority of operator. Operator "|" priority is higher then "? :". To improve the readability the operator "? :" has been replaced with "if ()" statement. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-02-09Merge tag 'usb-v5.12-rc1' of ↵Greg Kroah-Hartman27-523/+10404
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: In v5.12-rc1, it adds cdnsp drivers for Cadence USB3 Family, it is different UDC driver with current cdns3 driver. * tag 'usb-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb: (23 commits) usb: cdnsp: Removes some useless trace events usb: cdns3: Add support for TI's AM64 SoC usb: cdnsp: fixes undefined reference to cdns_remove usb: cdns3: Adds missing __iomem markers usb: cdnsp: Fix for undefined reference to `usb_hcd_is_primary_hcd' usb: cdnsp: Fixes for sparse warnings usb: cdns3: Fixes for sparse warnings usb: cdnsp: fix error handling in cdnsp_mem_init() usb: cdns3: Removes xhci_cdns3_suspend_quirk from host-export.h usb: cdnsp: Removes some not useful function arguments usb: cdns3: fix warning when USB_CDNS_HOST is not set usb: cdns3: fix build when PM_SLEEP is not set usb: cdnsp: Mark cdnsp_gadget_ops with static keyword MAINTAINERS: add Cadence USBSSP DRD IP driver entry usb: cdns3: Change file names for cdns3 driver. usb: cdnsp: Add tracepoints for CDNSP driver usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver usb: cdnsp: Device side header file for CDNSP driver usb: cdns3: Changed type of gadget_dev in cdns structure usb: cdns3: Refactoring names in reusable code ...
2021-02-06usb: cdnsp: Removes some useless trace eventsPawel Laszczak4-18/+0
Patch removes some useless trace events that can be replaced by ftrace. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-01-23usb: cdns3: Add support for TI's AM64 SoCAswath Govindraju1-0/+1
Add support for USB controller present on the AM64x SoC. Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-01-14usb: cdnsp: fixes undefined reference to cdns_removePawel Laszczak1-0/+8
Patch fixes the following errors: ld: drivers/usb/cdns3/cdnsp-pci.o: in function `cdnsp_pci_remove': cdnsp-pci.c:(.text+0x80): undefined reference to `cdns_remove' ld: drivers/usb/cdns3/cdnsp-pci.o: in function `cdnsp_pci_probe': cdnsp-pci.c:(.text+0x34c): undefined reference to `cdns_init' Issue occurs for USB/CDNS3/CDNSP kernel configuration: CONFIG_USB=m CONFIG_USB_CDNS_SUPPORT=y CONFIG_USB_CDNS3=m CONFIG_USB_CDNS3_PCI_WRAP=m CONFIG_USB_CDNSP_PCI=y Acked-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-01-14usb: cdns3: Adds missing __iomem markersPawel Laszczak2-12/+12
Patch adds missing __iomem markers in core.h file and makes some changes in drd.c file related with these markers. The lack of __iomem has reported by sparse checker on parsic architecture. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2020-12-29usb: cdns3: imx: improve driver .remove APIPeter Chen1-0/+5
Keep the runtime active during the remove operation, and disable related clocks. Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: imx: fix can't create core device the second time issuePeter Chen1-10/+1
The cdns3 core device is populated by calling of_platform_populate, the flag OF_POPULATED is set for core device node, if this flag is not cleared, when calling of_platform_populate the second time after loading parent module again, the OF code will not try to create platform device for core device. To fix it, it uses of_platform_depopulate to depopulate the core device which the parent created, and the flag OF_POPULATED for core device node will be cleared accordingly. Cc: <stable@vger.kernel.org> Fixes: 1e056efab993 ("usb: cdns3: add NXP imx8qm glue layer") Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: imx: fix writing read-only memory issuePeter Chen1-1/+5
The memory for struct clk_bulk_data should not be static which will be written during the clk_bulk_get. It fixed below oops when loading cdns3-imx as module. [ 17.272605] Unable to handle kernel write to read-only memory at virtual address ffff8000092a5398 [ 17.299730] Mem abort info: [ 17.313542] unregister ISI channel: mxc_isi.4 [ 17.324076] ESR = 0x9600004f [ 17.344658] EC = 0x25: DABT (current EL), IL = 32 bits [ 17.402055] SET = 0, FnV = 0 [ 17.404321] mxs_phy 5b100000.usbphy: supply phy-3p0 not found, using dummy regulator [ 17.405121] EA = 0, S1PTW = 0 [ 17.405133] Data abort info: [ 17.496231] ISV = 0, ISS = 0x0000004f [ 17.510871] CM = 0, WnR = 1 [ 17.533542] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000081ea5000 [ 17.545709] [ffff8000092a5398] pgd=00000008bffff003, p4d=00000008bffff003, pud=00000008bfffe003, pmd=0000000885041003, pte=006000088513b783 [ 17.573521] Internal error: Oops: 9600004f [#1] PREEMPT SMP [ 17.579113] Modules linked in: usbmisc_imx phy_mxs_usb phy_cadence_salvo cdns3_imx(+) tcpci imx8_media_dev(C) caam error [ 17.590044] CPU: 2 PID: 253 Comm: systemd-udevd Tainted: G C 5.10.0-rc4-04445-g11f3c3a29d0-dirty #19 [ 17.600488] Hardware name: Freescale i.MX8QXP MEK (DT) [ 17.605633] pstate: 20000005 (nzCv daif -PAN -UAO -TCO BTYPE=--) [ 17.611662] pc : __clk_bulk_get+0x48/0x130 [ 17.615786] lr : clk_bulk_get+0x18/0x20 [ 17.619634] sp : ffff80001369b880 [ 17.622953] x29: ffff80001369b880 x28: 0000000000000013 [ 17.628277] x27: 0000000000000100 x26: ffff00080553b100 [ 17.633602] x25: ffff80001229b4d8 x24: 0000000000000000 [ 17.638928] x23: ffff000800665410 x22: 0000000000000005 [ 17.644275] x21: ffff8000092a5390 x20: ffff000800665400 [ 17.649605] x19: ffff000804e6f980 x18: 000000005b110000 [ 17.654946] x17: 0000000000000000 x16: 0000000000000000 [ 17.660274] x15: ffff800011989100 x14: 0000000000000000 [ 17.665599] x13: ffff800013ce1000 x12: ffff800013ca1000 [ 17.670924] x11: 000000005b110000 x10: 0000000000000000 [ 17.676249] x9 : ffff8000106c5a30 x8 : ffff000804e6fa00 [ 17.681575] x7 : 0000000000000000 x6 : 000000000000003f [ 17.686901] x5 : 0000000000000040 x4 : ffff80001369b8b0 [ 17.692228] x3 : ffff8000092a5398 x2 : ffff8000092a5390 [ 17.697574] x1 : ffff8000092a53e8 x0 : 0000000000000004 [ 17.702905] Call trace: [ 17.705366] __clk_bulk_get+0x48/0x130 [ 17.709125] clk_bulk_get+0x18/0x20 [ 17.712620] devm_clk_bulk_get+0x58/0xb8 [ 17.716563] cdns_imx_probe+0x84/0x1f0 [cdns3_imx] [ 17.721363] platform_drv_probe+0x58/0xa8 [ 17.725381] really_probe+0xec/0x4c8 [ 17.728967] driver_probe_device+0xf4/0x160 [ 17.733160] device_driver_attach+0x74/0x80 [ 17.737355] __driver_attach+0xa4/0x170 [ 17.741202] bus_for_each_dev+0x74/0xc8 [ 17.745043] driver_attach+0x28/0x30 [ 17.748620] bus_add_driver+0x144/0x228 [ 17.752462] driver_register+0x68/0x118 [ 17.756308] __platform_driver_register+0x4c/0x58 [ 17.761022] cdns_imx_driver_init+0x24/0x1000 [cdns3_imx] [ 17.766434] do_one_initcall+0x48/0x2c0 [ 17.770280] do_init_module+0x5c/0x220 [ 17.774029] load_module+0x210c/0x2858 [ 17.777784] __do_sys_finit_module+0xb8/0x120 [ 17.782148] __arm64_sys_finit_module+0x24/0x30 [ 17.786691] el0_svc_common.constprop.0+0x70/0x168 [ 17.791497] do_el0_svc+0x28/0x88 [ 17.794822] el0_sync_handler+0x158/0x160 [ 17.798833] el0_sync+0x140/0x180 [ 17.802158] Code: aa0203f5 91002043 8b205021 a90153f3 (f801047f) Cc: <stable@vger.kernel.org> Fixes: 1e056efab993 ("usb: cdns3: add NXP imx8qm glue layer") Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: Fix for undefined reference to `usb_hcd_is_primary_hcd'Pawel Laszczak1-1/+6
Patch fixes the following compilation error: ld: drivers/usb/cdns3/host.o: in function `xhci_cdns3_suspend_quirk': host.c:(.text+0x9): undefined reference to `usb_hcd_is_primary_hcd' This reference to 'usb_hdc_is_primary_hcd' is from hcd_to_xhci(), which is being built as a loadable module: int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); Issue occurrd for following kernel configuration: CONFIG_USB_GADGET=y CONFIG_USB_SUPPORT=y CONFIG_USB_COMMON=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB=m CONFIG_USB_CDNS_SUPPORT=y CONFIG_USB_CDNS_HOST=y CONFIG_USB_CDNS3=m CONFIG_USB_CDNS3_GADGET=y CONFIG_USB_CDNS3_HOST=y Signed-off-by: Pawel Laszczak <pawell@cadence.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: Fixes for sparse warningsPawel Laszczak7-37/+32
Patch fixes all sparse warnings in cdsnp driver. It fixes the following warnings: cdnsp-ring.c:1441: warning: incorrect type in assignment cdnsp-ring.c:1444: warning: restricted __le32 degrades to integer cdnsp-ring.c:2200: warning: dubious: x | !y cdnsp-gadget.c:501: warning: incorrect type in assignment cdnsp-gadget.c:504: warning: restricted __le32 degrades to integer cdnsp-gadget.c:507: warning: restricted __le32 degrades to integer cdnsp-gadget.c:508: warning: restricted __le32 degrades to integer cdnsp-gadget.c:509: warning: invalid assignment: |= cdnsp-gadget.c:510: warning: cast from restricted __le32 cdnsp-gadget.c:558: warning: incorrect type in assignment cdnsp-gadget.c:561: warning: restricted __le32 degrades to integer cdnsp-gadget.c:570: warning: restricted __le32 degrades to integer cdnsp-gadget.c:1571: warning: incorrect type in argument 1 cdnsp-gadget.c:1602: warning: restricted __le32 degrades to integer cdnsp-gadget.c:1760: warning: incorrect type in assignment cdnsp-gadget.c:1762: warning: incorrect type in assignment cdnsp-gadget.c:1763: warning: incorrect type in assignment cdnsp-gadget.c:1764: warning: incorrect type in assignment cdnsp-gadget.c:1765: warning: incorrect type in assignment cdnsp-gadget.c:1766: warning: incorrect type in assignment cdnsp-gadget.c:1767: warning: incorrect type in assignment cdnsp-gadget.c:458: warning: cast truncates bits from constant value (ffffffff07ffffff becomes 7ffffff) cdnsp-gadget.c:666: warning: cast truncates bits from constant value (ffffffff07ffffff becomes 7ffffff) cdnsp-mem.c:762: warning: incorrect type in assignment cdnsp-mem.c:763: warning: incorrect type in assignment cdnsp-mem.c:928: warning: cast from restricted __le16 cdnsp-mem.c:1187: warning: incorrect type in assignment cdnsp-mem.c:1191: warning: incorrect type in assignment cdnsp-ep0.c:142: warning: incorrect type in assignment cdnsp-ep0.c:144: warning: restricted __le32 degrades to integer cdnsp-ep0.c:147: warning: restricted __le32 degrades to integer cdnsp-ep0.c:148: warning: restricted __le32 degrades to integer cdnsp-ep0.c:179: warning: incorrect type in argument 1 cdnsp-ep0.c:311: warning: incorrect type in argument 1 cdnsp-ep0.c:469: warning: incorrect type in assignment cdnsp-trace.h:611:1: warning: cast from restricted __le32 Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: Fixes for sparse warningsPawel Laszczak2-5/+5
Patch fixes the following warnings: cdns3-gadget.c:1203: sparse: warning: incorrect type in assignment (different base types) cdns3-gadget.c:1203: sparse: expected restricted __le32 [usertype] length cdns3-gadget.c:1203: sparse: got unsigned long cdns3-gadget.c:1250: sparse: warning: invalid assignment: |= cdns3-gadget.c:1250: sparse: left side has type restricted __le32 cdns3-gadget.c:1250: sparse: right side has type unsigned long cdns3-gadget.c:1253: sparse: warning: invalid assignment: |= cdns3-gadget.c:1253: sparse: left side has type restricted __le32 cdns3-gadget.c:1253: sparse: right side has type unsigned long cdns3-ep0.c:367: sparse: warning: restricted __le16 degrades to integer cdns3-ep0.c:792: sparse: warning: symbol 'cdns3_gadget_ep0_ops' was not declared. Should it be static? Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: fix error handling in cdnsp_mem_init()Pawel Laszczak1-12/+24
This function uses "One Function Cleans up Everything" style and that's basically impossible to do correctly. It's cleaner to write it with "clean up the most recent allocation". Patch fixes two isues: 1. If pdev->dcbaa = dma_alloc_coherent() fails then that leads to a NULL dereference inside the cdnsp_free_priv_device() function. 2. if cdnsp_alloc_priv_device() fails that leads to a double free because we free pdev->out_ctx.bytes in several places. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Pawel Laszczak <pawell@cadence.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Tested-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: Removes xhci_cdns3_suspend_quirk from host-export.hPawel Laszczak2-8/+3
Function xhci_cdns3_suspend_quirk is used only in host.c file. We can make it as static and removes it from host-export.h. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Acked-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: Removes some not useful function argumentsPawel Laszczak3-14/+13
This patch removes 'flags' argument from some functions and use indirect the correct GFP_XXX flag to fix the following warning: 'The patch d40a169aab24: "usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver" from Dec 7, 2020, leads to the following static checker warning: drivers/usb/cdns3/cdnsp-mem.c:1229 cdnsp_mem_init() warn: use 'flags' here instead of GFP_XXX? drivers/usb/cdns3/cdnsp-mem.c 1206 int cdnsp_mem_init(struct cdnsp_device *pdev, gfp_t flags);' ^^^^^^^^^^^ Signed-off-by: Pawel Laszczak <pawell@cadence.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: fix warning when USB_CDNS_HOST is not setRandy Dunlap1-2/+2
Fix a build warning when USB_CDNS_HOST is not enabled: In file included from ../drivers/usb/cdns3/core.c:23:0: ../drivers/usb/cdns3/host-export.h:27:51: warning: ‘struct usb_hcd’ declared inside parameter list will not be visible outside of this definition or declaration static inline int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd) ^~~~~~~ Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Peter Chen <peter.chen@nxp.com> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@ti.com> Cc: linux-usb@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: fix build when PM_SLEEP is not setRandy Dunlap1-0/+5
Fix build error when CONFIG_PM_SLEEP is not enabled by adding stubs for the PM_SLEEP functions. ../drivers/usb/cdns3/cdns3-plat.c: In function ‘cdns3_controller_resume’: ../drivers/usb/cdns3/cdns3-plat.c:246:2: error: implicit declaration of function ‘cdns_resume’; did you mean ‘cdns_remove’? [-Werror=implicit-function-declaration] cdns_resume(cdns, !PMSG_IS_AUTO(msg)); ^~~~~~~~~~~ Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Peter Chen <peter.chen@nxp.com> Cc: Pawel Laszczak <pawell@cadence.com> Cc: Roger Quadros <rogerq@ti.com> Cc: linux-usb@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: Mark cdnsp_gadget_ops with static keywordZou Wei1-1/+1
Fix the following sparse warning: drivers/usb/cdns3/cdnsp-gadget.c:1546:29: warning: symbol 'cdnsp_gadget_ops' was not declared. Should it be static? Signed-off-by: Zou Wei <zou_wei@huawei.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: Change file names for cdns3 driver.Pawel Laszczak7-11/+11
Patch adds prefix cdns3- to all file names related only to cdns3 driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: Add tracepoints for CDNSP driverPawel Laszczak8-16/+1614
Patch adds the series of tracepoints that can be used for debugging issues detected in driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Reviewed-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD DriverPawel Laszczak14-29/+6639
This patch introduces the main part of Cadence USBSSP DRD driver to Linux kernel. To reduce the patch size a little bit, the header file gadget.h was intentionally added as separate patch. The Cadence USBSSP DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS DRD controller is compliant with XHCI. The architecture for device side is almost the same as for host side, and most of the XHCI specification can be used to understand how this controller operates. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdnsp: Device side header file for CDNSP driverPawel Laszczak1-0/+1463
Patch defines macros, registers and structures used by Device side driver. Because the size of main patch is very big, I’ve decided to create separate patch for cdnsp-gadget.h. It should simplify reviewing the code. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: Changed type of gadget_dev in cdns structurePawel Laszczak1-2/+2
Patch changes the type for gadget_dev pointer in cdns structure from pointer to cdns3_device structure to void pointer. This filed is in reusable code and after this change it will be used to point to both cdns3_device or cdnsp_device objects. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-12-29usb: cdns3: Refactoring names in reusable codePawel Laszczak10-198/+199
Patch change the functions and objects names in reusable code. The reusable code includes core.c, core.h, drd.c and drd.h files. It also changes the names of all references to these functions and objects in other cdns3 files. There are a lot of changes, but all changes are very trivial. The reason of this patch is to avoid of mixing prefix cdns3 and cdnsp in in cdnsp driver what could introduce some confusion in understanding of cdnsp driver. This patch assumes to use three different prefixes in Cadence USB drivers: cdns: for common reusable code cdnsp: for names related only with cdnsp driver cdns3: for names related only with cdns3 driver Signed-off-by: Pawel Laszczak <pawell@cadence.com> Tested-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
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