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path: root/drivers/usb/dwc2/platform.c
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2017-12-12usb: dwc2: add optional usb ecc reset bitDinh Nguyen
The dwc2 USB controller in Stratix10 has an additional ECC reset bit that needs to get de-asserted in order for the controller to work properly. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-11-04USB: add SPDX identifiers to all remaining files in drivers/usb/Greg Kroah-Hartman
It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/usb/ and include/linux/usb* files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-11usb: dwc2: simplify optional reset handlingPhilipp Zabel
As of commit bb475230b8e5 ("reset: make optional functions really optional"), the reset framework API calls use NULL pointers to describe optional, non-present reset controls. This allows to return errors from devm_reset_control_get_optional and to call reset_control_(de)assert unconditionally. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-26usb: dwc2: eliminate irq parameter from dwc2_hcd_initHeiner Kallweit
The irq is available in hsotg already, so there's no need to pass it as separate function parameter. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-24usb: dwc2: Fix brace usageJohn Youn
* Remove braces for one-line statements * Add missing braces where another arm in if-statement uses braces Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-24usb: dwc2: Cleanup some checkpatch issuesJohn Youn
This commmit is the result of running checkpatch --fix. The results were verified for correctness. Some of the fixes result in line over 80 char which we will fix manually later. The following is a summary of what was done by checkpatch: * Remove externs on function prototypes. * Replace symbolic permissions with octal. * Align code to open parens. * Replace 'unsigned' with 'unsigned int'. * Remove unneccessary blank lines. * Add blank lines after declarations. * Add spaces around operators. * Remove unnecessary spaces after casts. * Replace 'x == NULL' with '!x'. * Replace kzalloc() with kcalloc(). * Concatenate multi-line strings. * Use the BIT() macro. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Remove dwc2_set_all_params functionJohn Youn
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 <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Move parameter initialization into params.cJohn Youn
Consolidate and move all the parameter initialization code from the probe function to params.c. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Declare the core params struct staticallyJohn Youn
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 <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18usb: dwc2: Add params.c fileJohn Youn
Add a params.c file and move all driver parameter code there, including all the static parameter definitions. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-10-07Merge tag 'armsoc-late' of ↵Linus Torvalds
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 ...
2016-09-14usb: dwc2: add support for Meson8b and GXBB SoCsJerome Brunet
Add compatible strings for amlogic Meson8b and GXBB SoCs with the corresponding configuration parameters. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-08-22usb: dwc2: Add reset control to dwc2Dinh Nguyen
Allow for platforms that have a reset controller driver in place to bring the USB IP out of reset. Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-04-28usb: dwc2: Proper cleanup on dr_mode failureJohn Youn
Cleanup in probe if we fail to get dr_mode. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-03-04usb: dwc2: Add support for Lantiq ARX and XRX SoCsAntti Seppälä
Add support for Lantiq ARX and XRX SoC families to the dwc2 driver. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Antti Seppälä <a.seppala@gmail.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2016-03-04usb: dwc2: host: Set host_rx_fifo_size to 525 for rk3066Douglas Anderson
As documented in dwc2_calculate_dynamic_fifo(), host_rx_fifo_size should really be: 2 * ((Largest Packet size / 4) + 1 + 1) + n with n = number of host channel. We have 9 host channels, so 2 * ((1024/4) + 2) + 9 = 516 + 9 = 525 We've got 960 / 972 total_fifo_size on rk3288 (and presumably on rk3066) and 525 + 128 + 256 = 909 so we're still under on both ports even when we increment by 5. In the future, it would be nice if dwc2_calculate_dynamic_fifo() could handle the "too small" FIFO case and come up with something more dynamically. When we do that we can figure out how to allocate the extra 48 / 60 bytes of FIFO that we're currently wasting. NOTE: no known bugs are fixed by this patch, but it seems like a simple fix and ought to fix someone. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2016-03-04usb: dwc2: rockchip: Make the max_transfer_size automaticDouglas Anderson
Previously we needed to set the max_transfer_size to explicitly be 65535 because the old driver would detect that our hardware could support much bigger transfers and then would try to do them. This wouldn't work since the DMA alignment code couldn't support it. Later in commit e8f8c14d9da7 ("usb: dwc2: clip max_transfer_size to 65535") upstream added support for clipping this automatically. Since that commit it has been OK to just use "-1" (default), but nobody bothered to change it. Let's change it to default now for two reasons: - It's nice to use autodetected params. - If we can remove the 65535 limit, we can transfer more! Signed-off-by: Douglas Anderson <dianders@chromium.org> Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2016-02-03Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"John Youn
This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB ethernet fails, due to being unable to pick up proper parameters when performing a plain reset before reading hw params. Below shows the results of the gnptxfsiz and hptxfsiz with and before and after reverting this (from Stefan Wahren): So here is the probe result before Patch 1 is applied: [ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host [ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000 [ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000 [ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration. [ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration. [ 1.394249] dwc2 20980000.usb: DWC OTG Controller [ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1 [ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000 And here is the probe result after Patch 1 is applied: [ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host [ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000 [ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000 [ 1.434301] dwc2 20980000.usb: DWC OTG Controller [ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1 [ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000 Tested-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: John Youn <johnyoun@synopsys.com> Reported-by: Stefan Wahren <stefan.wahren@i2se.com> Reported-by: Remi Pommarel <repk@triplefau.lt> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Felipe Balbi <balbi@kernel.org>
2015-12-22usb: dwc2: add shutdown callback to platform variantHeiko Stübner
In specific conditions (involving usb hubs) dwc2 devices can create a lot of interrupts, even to the point of overwhelming devices running at low frequencies. Some devices need to do special clock handling at shutdown-time which may bring the system clock below the threshold of being able to handle the dwc2 interrupts. Disabling dwc2-irqs in a shutdown callbacks prevents reboots/poweroffs from getting stuck in such cases. The hsotg struct already contains an unused irq element, so we can just use it to store the irq number for the shutdown callback. Reviewed-by: Douglas Anderson <dianders@chromium.org> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-22usb: dwc2: Remove redundant reset in probeJohn Youn
Reset already happens before this so just force the dr_mode. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-22usb: dwc2: Move reset into dwc2_get_hwparams()John Youn
The reset is required to get reset values of the hardware parameters but the force mode is not. Move the base reset into dwc2_get_hwparams() and do the reset and force mode afterwards. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-22usb: dwc2: Fix dr_mode validationJohn Youn
The dr_mode parameter was being checked against how the dwc2 module was being configured at compile time. But it wasn't checked against the hardware capabilities, nor were the hardware capabilities checked against the compilation parameters. This commit adds those checks and adjusts dr_mode to an appropriate value, if needed. If the hardware capabilities and module compilation do not match then we fail as it wouldn't be possible to run properly. The hardware, module, and dr_mode, can each be set to host, device, or otg. Check that all these values are compatible and adjust the value of dr_mode if possible. The following table summarizes the behavior: actual HW MOD dr_mode dr_mode ------------------------------ HST HST any : HST HST DEV any : --- HST OTG any : HST DEV HST any : --- DEV DEV any : DEV DEV OTG any : DEV OTG HST any : HST OTG DEV any : DEV OTG OTG any : dr_mode Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-22usb: dwc2: Rename dwc2_core_reset()John Youn
Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This describes what it is doing more accurately. This is in preparation of introducing a plain dwc2_core_reset() function that only performs the reset and doesn't force the mode. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-22usb: dwc2: reset dwc2 core before dwc2_get_hwparams()Yunzhi Li
We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should be called before dwc2_get_hwparams() to reset core registers to default value. Without this the FIFO setting might be incorrect because calculating FIFO size need power-on value of GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers. This patch could avoid warnning massage like in rk3288 platform: [ 2.074764] dwc2 ff580000.usb: 256 invalid for host_perio_tx_fifo_size. Check HW configuration. Signed-off-by: Yunzhi Li <lyz@rock-chips.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-15usb: dwc2: add support of hi6220Zhangfei Gao
Support hisilicon,hi6220-usb for HiKey board Acked-by: Rob Herring <robh@kernel.org> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-15usb: dwc2: host: enable descriptor dma for fs devicesMian Yousaf Kaukab
As descriptor dma mode does not support split transfers, it can't be enabled for high speed devices. Add a core parameter to enable it for full speed devices. Ensure frame list and descriptor list are correctly freed during disconnect. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-11-20usb: dwc2: fix kernel oops during driver probeStefan Wahren
This patch make sure that all necessary members of dwc2_hsotg are initialized before the irq handler is requested. So the kernel oops triggered by dwc2_handle_common_intr has been fixed. dwc2 20980000.usb: Configuration mismatch. Forcing host mode dwc2 20980000.usb: no platform data or transceiver defined Unable to handle kernel paging request at virtual address cc860040 pgd = c0004000 [cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000 Internal error: Oops: 7 [#1] ARM CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19 Hardware name: BCM2835 task: cb494000 ti: cb4d0000 task.ti: cb4d0000 PC is at dwc2_is_controller_alive+0x18/0x34 LR is at dwc2_handle_common_intr+0x24/0xb60 Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-11-19usb: dwc2: make otg clk optionalStefan Wahren
Fixes commit 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c") The above commit consolidated the low-level phy access into a common location. This change made the otg clk a requirement and broke some platforms when it was moved into platform.c. So make clk handling optional again. Acked-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c") Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-11-19usb: dwc2: Return errors from PHYStefan Wahren
When searching for PHYs, any error was treated as if the PHY did not exist or was not specified. Thus the probe function did not correctly return error conditions such as -EPROBE_DEFER. Fixed so that only a non-existing PHY is ignored and any other error is returned. Acked-by: Eric Anholt <eric@anholt.net> Reported-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-11-19usb: dwc2: Make PHY optionalJohn Youn
Fixes commit 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c") The above commit consolidated the low-level phy access into a common location. This change introduced a check from the gadget requiring that a PHY is specified. This requirement never existed on the host side and broke some platforms when it was moved into platform.c. The gadget doesn't require the PHY either so remove the check. Acked-by: Eric Anholt <eric@anholt.net> Reported-by: Stefan Wahren <info@lategoodbye.de> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c") Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-11-17usb: dwc2: host: Fix ahbcfg for rk3066Douglas Anderson
The comment for ahbcfg for rk3066 parameters (also used for rk3288) claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't shifted properly, the 0x7 ended up being masked and we ended up programming 0x3 for the HBstLen. Let's set it to INCR16 properly. As per Wu Liang Feng at Rockchip this may increase transmission efficiency. I did blackbox tests with writing 0s to a USB-based SD reader (forcefully capping CPU Freq to try to measure efficiency): cd /sys/devices/system/cpu/cpu0/cpufreq echo userspace > scaling_governor echo 126000 > scaling_setspeed for i in $(seq 10); do dd if=/dev/zero of=/dev/sdb bs=1M count=750 done With the above tests I found that speeds went from ~15MB/s to ~18MB/s. Note that most other tests I did (including reading from the same USB reader) didn't show any difference in performance. Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: John Youn <johnyoun@synopsys.com> Reviewed-by: Liangfeng Wu <wulf@rock-chips.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-14usb: dwc2: refactor common low-level hw code to platform.cMarek Szyprowski
DWC2 module on some platforms needs three additional hardware resources: phy controller, clock and power supply. All of them must be enabled/activated to properly initialize and operate. This was initially handled in s3c-hsotg driver, which has been converted to 'gadget' part of dwc2 driver. Unfortunately, not all of this code got moved to common platform code, what resulted in accessing DWC2 registers without enabling low-level hardware resources. This fails for example on Exynos SoCs. This patch moves all the code for managing those resources to common platform.c file and provides convenient wrappers for controlling them. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-14usb: dwc2: remove no longer needed init_mutexMarek Szyprowski
init_mutex is a leftover from the time, when s3c-hsotg driver did not implement proper pull up/down control and emulated it by enabling enabling/disabling usb phy. Proper pull up/down control has been added by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget: use soft-disconnect udc feature in pullup() method"), so init_muxtex can be removed now to avoid potential deadlocks with other locks. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-01usb: dwc2: fix unbalanced phy controlMarek Szyprowski
Even when DWC2 is in (internal) suspended state, it should disable PHY in suspend and then enable it in resume. This patch fixes unbalanced PHY control sequence. Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-10-01usb: dwc2: force dr_mode in case of configuration mismatchMian Yousaf Kaukab
If dual role configuration is not selected, check and force dr_mode based on the selected configuration. Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Tested-by: Robert Baldyga <r.baldyga@samsung.com> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com> Tested-by: John Youn <johnyoun@synopsys.com> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-09-27usb: common: of_usb_get_dr_mode to usb_get_dr_modeHeikki Krogerus
By using the unified device property interface, the function can be made available for all platforms and not just the ones using DT. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-09-27usb: dwc2: rename all s3c_* to dwc2_*Felipe Balbi
this driver has long ago became dwc2.ko with both peripheral and host roles, there's no point in keeping the old function names. Acked-by: John Youn <johnyoun@synopsys.com> Tested-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-29usb: dwc2: add hibernation core parameterGregory Herrero
dwc2 may not be able to exit from hibernation if the hardware does not provide a way to detect resume signalling in this state. Thus, add the possibility to disable hibernation feature. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-29usb: dwc2: set parameter values in probe functionMian Yousaf Kaukab
So the parameters can be used in both host and gadget modes. Also consolidate param functions in the core.h Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-29usb: dwc2: add external_id_pin_ctl core parameterGregory Herrero
This is required due to an Intel specific hardware issue. Where id- pin setup causes glitches on the interrupt line when CONIDSTSCHG interrupt is enabled. Specify external_id_pin_ctl when an external driver (for example phy) can handle id change, so that CONIDSTSCHG interrupt can be disabled from the controller. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Gregory Herrero <gregory.herrero@intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-29usb: dwc2: move debugfs code to a separate fileMian Yousaf Kaukab
Prepare to add more debug code. Moreover, don't save dentry * for each file in struct dwc2_hsotg as clean up is done with debugfs_remove_recursive(). s3c_hsotg_delete_debug() is removed altogether for the same reason. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-12usb: dwc2: rework initialization of host and gadget in dual-role modeMarek Szyprowski
If device is configured to work only in HOST or DEVICE mode, there is no point in initializing both subdrivers. This patch also fixes resource leakage if host subdriver fails to initialize. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12usb: dwc2: platform: add generic PHY framework supportYunzhi Li
Get PHY parameters from devicetree and power off usb PHY during system suspend. Acked-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Yunzhi Li <lyz@rock-chips.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-25usb: dwc2: Fix build warning when CONFIG_PM_SLEEP=nFabio Estevam
Building with bcm2835_defconfig, which has CONFIG_PM_SLEEP=n causes the following build warning: drivers/usb/dwc2/platform.c:227:12: warning: 'dwc2_suspend' defined but not used [-Wunused-function] drivers/usb/dwc2/platform.c:237:12: warning: 'dwc2_resume' defined but not used [-Wunused-function] Annotate these functions with '__maybe_unused' to prevent the warnings. Reported-by: Olof's autobuilder <build@lixom.net> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-21usb: dwc2: gadget: add mutex to serialize init/deinit callsMarek Szyprowski
This patch adds mutex, which protects initialization and deinitialization procedures against suspend/resume methods. This mutex will be needed by the updated suspend/resume calls, which tracks gadget state. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14usb: dwc2: move usb_disabled() call to host driver onlyDinh Nguyen
Since platform.c will get built for both Host and Gadget, if we leave the usb_disabled() call in platform.c, it results in the following build error when (!USB && USB_GADGET) condition is met. ERROR: "usb_disabled" [drivers/usb/dwc2/dwc2_platform.ko] undefined! Since usb_disabled() is mostly used to disable USB host functionality, move the call the host portion for the DWC2 driver. Acked-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14usb: dwc2: Update common interrupt handler to call gadget interrupt handlerDinh Nguyen
Make dwc2_handle_common_intr call the gadget interrupt function when operating in peripheral mode. Remove the spinlock functions in s3c_hsotg_irq as dwc2_handle_common_intr() already has the spinlocks. Move the registeration of the IRQ to common code for platform and PCI. Remove duplicate interrupt conditions that was in gadget, as those are handled by dwc2 common interrupt handler. Acked-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14usb: dwc2: convert to use dev_pm_ops APIDinh Nguyen
Update suspend/resume to use dev_pm_ops API. Acked-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-14usb: dwc2: Move gadget probe function into platform codeDinh Nguyen
This patch will aggregate the probing of gadget/hcd driver into platform.c. The gadget probe funtion is converted into gadget_init that is now only responsible for gadget only initialization. All the gadget resources are now handled by platform.c Since the host workqueue will not get initialized if the driver is configured for peripheral mode only. Thus we need to check for wq_otg before calling queue_work(). Also, we move spin_lock_init to common location for both host and gadget that is either in platform.c or pci.c. We also move suspend/resume code to common platform code. Lastly, move the "samsung,s3c6400-hsotg" binding into dwc2_of_match_table. Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Acked-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-09-11Revert "usb: dwc2: move "samsung,s3c6400-hsotg" into common platform"Robert Baldyga
This reverts commit 8df438571cdbd5c4fcd1b25b19eea1ad5c3cf777. This patch breaks building dwc2 driver in gadget mode at samsung platforms. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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