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path: root/drivers/mmc/host/jz4740_mmc.c
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2021-07-13mmc: jz4740: Fix fall-through warning for ClangGustavo A. R. Silva
Fix the following fallthrough warning (mips-randconfig with Clang): drivers/mmc/host/jz4740_mmc.c:792:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/lkml/60edca25.k00ut905IFBjPyt5%25lkp@intel.com/ Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2021-06-14mmc: JZ4740: Add support for JZ4775周琰杰 (Zhou Yanjie)
Add support for the variant on the JZ4775 SoC from Ingenic. Let's also clarify that the drive clock selection and sample clock selection have been supported since JZ4775, not X1000. So, support for these two functions has been added for JZ4775 and JZ4780. Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Acked-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/1623329930-14387-3-git-send-email-zhouyanjie@wanyeetech.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2021-06-14mmc: jz4740: Remove redundant error printing in jz4740_mmc_probe()Zhen Lei
When devm_ioremap_resource() fails, a clear enough error message will be printed by its subfunction __devm_ioremap_resource(). The error information contains the device name, failure cause, and possibly resource information. Therefore, remove the error printing here to simplify code and reduce the binary size. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/r/20210511093329.4670-1-thunder.leizhen@huawei.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2021-02-01mmc: jz4740: remove unused struct component card_detect_irqH. Nikolaus Schaller
I have not found any user for this struct component. Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/415ea1cb85eedc12f0c2f70da9a1ae3885bdd091.1608714110.git.hns@goldelico.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-09-07mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4Douglas Anderson
This is like commit 3d3451124f3d ("mmc: sdhci-msm: Prefer asynchronous probe") but applied to a whole pile of drivers. This batch converts the drivers that appeared to be around in the v4.4 timeframe. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> # SH_MMCIF Tested-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20200903162412.1.Id501e96fa63224f77bb86b2135a5e8324ffb9c43@changeid Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-09-07mmc: jz4740: Simplify with dev_err_probe()Krzysztof Kozlowski
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20200902193658.20539-5-krzk@kernel.org Reviewed-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-07-27mmc: jz4740: Use pm_ptr() macroPaul Cercueil
Use the newly introduced pm_ptr() macro to simplify the code. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-05-28mmc: jz4740: Inform the mmc core about the maximum busy timeoutUlf Hansson
Some commands uses R1B responses, which means the card may assert the DAT0 line to signal busy for a period of time, after it has received the command. The mmc core normally specifies the busy period for the command in the cmd->busy_timeout. Ideally the driver should respect it, but that requires quite some update of the code, so let's defer that to someone with the HW at hand. Instead, let's inform the mmc core about the maximum supported busy timeout in ->max_busy_timeout during ->probe(). This value corresponds to the fixed 5s timeout used by jz4740. In this way, we let the mmc core validate the needed timeout, which may lead to that it converts from a R1B into a R1 response and then use CMD13 to poll for busy completion. In other words, this change enables support for commands with longer busy periods than 5s, like erase (CMD38) for example. Cc: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20200414161413.3036-5-ulf.hansson@linaro.org
2019-12-16mmc: jz4740: Convert to pinctrl_select_default_state()Ulf Hansson
Let's move away from using pinctrl_pm_select_default_state() as it's scheduled for removal and use pinctrl_select_default_state() instead. Cc: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Paul Cercueil <paul@crapouillou.net> Acked-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20191206170821.29711-9-ulf.hansson@linaro.org
2019-11-13mmc: jz4740: Add support for Low Power Mode (LPM)Zhou Yanjie
Add support for low power mode to the Ingenic's MMC/SD Controller. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-11-13mmc: jz4740: Add support for X1000Zhou Yanjie
Add support for probing mmc driver on the X1000 Soc from Ingenic. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-11-13mmc: jz4740: Add support for JZ4760Zhou Yanjie
Add support for probing mmc driver on the JZ4760 Soc from Ingenic. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-11-13mmc: jz4740: Add 8bit mode supportZhou Yanjie
Add support for 8bit mode, now supports 1bit/4bit/8bit modes. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-09-11mmc: jz4740: Drop dependency on arch headerPaul Cercueil
We don't need to set the 'slave_id' anymore - that field is never read by the DMA driver. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-09-11mmc: jz4740: Code cleanupPaul Cercueil
Fix wrong code indentation which made the code hard to read, and fix return with value in void function. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-09-11mmc: Remove dev_err() usage after platform_get_irq()Stephen Boyd
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: linux-mmc@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 151Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 35 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.655028468@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-25mmc: jz4740: Remove platform data and use standard APIsPaul Cercueil
Drop the custom code to get the 'cd' and 'wp' GPIOs. The driver now calls mmc_of_parse() which will init these from devicetree or device properties. Also drop the custom code to get the 'power' GPIO. The MMC core provides us with the means to power the MMC card through an external regulator. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-02-25mmc: jz4740: Annotate implicit fall throughMathieu Malaterre
There is a plan to build the kernel with -Wimplicit-fallthrough and these places in the code produced warnings (W=1). This commit removes the following warnings: drivers/mmc/host/jz4740_mmc.c:745:3: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mmc/host/jz4740_mmc.c:779:3: warning: this statement may fall through [-Wimplicit-fallthrough=] Signed-off-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-17mmc: jz4740: Use PTR_ERR_OR_ZERO in jz4740_mmc_request_gpios()YueHaibing
Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Joey Pabalinas <joeypabalinas@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-17mmc: jz4740: rework pre_req/post_req implementationEzequiel Garcia
As reported by Aaro, the JZ4740 MMC driver throws a warning when the kernel is built without preemption (CONFIG_PREEMPT_NONE=y). [ 16.461094] jz4740-mmc 13450000.mmc: [jz4740_mmc_prepare_dma_data] invalid cookie: data->host_cookie 567 host->next_data.cookie 568 [ 16.473120] jz4740-mmc 13450000.mmc: [jz4740_mmc_prepare_dma_data] invalid cookie: data->host_cookie 568 host->next_data.cookie 569 [ 16.485144] jz4740-mmc 13450000.mmc: [jz4740_mmc_prepare_dma_data] invalid cookie: data->host_cookie 569 host->next_data.cookie 570 [ 16.497170] jz4740-mmc 13450000.mmc: [jz4740_mmc_prepare_dma_data] invalid cookie: data->host_cookie 570 host->next_data.cookie 571 The problem seems to be related to how pre_req/post_req is implemented. Currently, it seems the driver expects jz4740_mmc_prepare_dma_data() to be called with monotonically increasing host_cookie values, which is wrong. Moreover, the implementation is overly complicated, keeping track of unneeded "next cookie" state. So, instead of attempting to fix the current pre_req/post_req implementation, this commit refactors the driver, dropping the state, following other drivers such as dw_mmc and sdhci. Cc: Paul Cercueil <paul@crapouillou.net> Cc: Mathieu Malaterre <malat@debian.org> Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-17mmc: jz4740: Use GPIO descriptor for powerLinus Walleij
The power GPIO line is passed with inversion flags and all from the platform data. Switch to using an optional GPIO descriptor and use this to switch the power. Augment the only boardfile to pass in the proper "power" descriptor in the GPIO descriptor machine table instead. As the GPIO handling is now much simpler, we can cut down on some overhead code. Cc: Paul Cercueil <paul@crapouillou.net> Cc: linux-mips@linux-mips.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Paul Burton <paul.burton@mips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-17mmc: jz4740: Get CD/WP GPIOs from descriptorsLinus Walleij
Modifty the JZ4740 driver to retrieve card detect and write protect GPIO pins from GPIO descriptors instead of hard-coded global numbers. Augment the only board file using this in the process and cut down on passed in platform data. Preserve the code setting the caps2 flags for CD and WP as active low or high since the slot GPIO code currently ignores the gpiolib polarity inversion semantice and uses the raw accessors to read the GPIO lines, but set the right polarity flags in the descriptor table for jz4740. Cc: Paul Cercueil <paul@crapouillou.net> Cc: linux-mips@linux-mips.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Paul Burton <paul.burton@mips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: jz4740: Add support for the JZ4725BPaul Cercueil
The JZ4725B is the first JZ SoC version that introduced a 32-bit IMASK register, not the JZ4750. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4740: Use dma_request_chan()Ezequiel Garcia
Replace dma_request_channel() with dma_request_chan(), which also supports probing from the devicetree. Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4740: Add support for the JZ4780Alex Smith
Add support for the JZ4780 MMC controller to the jz47xx_mmc driver. There are a few minor differences from the 4740 to the 4780 that need to be handled, but otherwise the controllers behave the same. The IREG and IMASK registers are expanded to 32 bits. Additionally, some error conditions are now reported in both STATUS and IREG. Writing IREG before reading STATUS causes the bits in STATUS to be cleared, so STATUS must be read first to ensure we see and report error conditions correctly. Signed-off-by: Alex Smith <alex.smith@imgtec.com> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4740: Set clock rate to mmc->f_max rather than JZ_MMC_CLK_RATEAlex Smith
The maximum clock rate can be overridden by DT. The clock rate should be set to the DT-specified value rather than the constant JZ_MMC_CLK_RATE when this is done. If the maximum clock rate is not set by DT then mmc->f_max will be set to JZ_MMC_CLK_RATE. Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Alex Smith <alex.smith@imgtec.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4740: Introduce devicetree probeEzequiel Garcia
Add support to probe the device via devicetree, which will be used to support other SoCs such as the JZ4780. Based on commits from the CI20 repo, by Paul Cercueil and Alex Smith. Binding document based on work by Zubair Lutfullah Kakakhel. Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4740: Reset the device requesting the interruptZubair Lutfullah Kakakhel
In case a bootloader leaves the device in a bad state, requesting the interrupt before resetting results in a bad interrupt loop. Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> [Ezequiel: cleanup commit description] Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4740: Use dev_get_platdataEzequiel Garcia
Instead of accessing the platform data pointer directly, use the dev_get_platdata() helper. Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4780: Order headers alphabeticallyEzequiel Garcia
Just a minor cleanup to order the headers alphabetically. This helps prevent merge conflicts. Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-02mmc: jz4740: Fix error exit path in driver's probePaul Cercueil
Currently, if jz4740_mmc_request_gpios() fails, the driver tries to release DMA resources. This is wrong because DMA is requested at a later stage. Signed-off-by: Paul Cercueil <paul@crapouillou.net> [Ezequiel: cleanup commit message] Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-04-04mmc: jz4740: Fix race condition in IRQ mask updateAlex Smith
A spinlock is held while updating the internal copy of the IRQ mask, but not while writing it to the actual IMASK register. After the lock is released, an IRQ can occur before the IMASK register is written. If handling this IRQ causes the mask to be changed, when the handler returns back to the middle of the first mask update, a stale value will be written to the mask register. If this causes an IRQ to become unmasked that cannot have its status cleared by writing a 1 to it in the IREG register, e.g. the SDIO IRQ, then we can end up stuck with the same IRQ repeatedly being fired but not handled. Normally the MMC IRQ handler attempts to clear any unexpected IRQs by writing IREG, but for those that cannot be cleared in this way then the IRQ will just repeatedly fire. This was resulting in lockups after a while of using Wi-Fi on the CI20 (GitHub issue #19). Resolve by holding the spinlock until after the IMASK register has been updated. Cc: stable@vger.kernel.org Link: https://github.com/MIPS/CI20_linux/issues/19 Fixes: 61bfbdb85687 ("MMC: Add support for the controller on JZ4740 SoCs.") Tested-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Alex Smith <alex.smith@imgtec.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02mmc: Convert timers to use timer_setup()Kees Cook
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Ludovic Desroches <ludovic.desroches@microchip.com> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Carlo Caione <carlo@caione.org> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Nicolas Pitre <nico@fluxnic.net> Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: Bruce Chang <brucechang@via.com.tw> Cc: Harald Welte <HaraldWelte@viatech.com> Cc: Tony Olech <tony.olech@elandigitalsystems.com> Cc: Pierre Ossman <pierre@ossman.eu> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Paul Cercueil <paul@crapouillou.net> Cc: Heiner Kallweit <hkallweit1@gmail.com> Cc: Shawn Lin <shawn.lin@rock-chips.com> Cc: Arvind Yadav <arvind.yadav.cs@gmail.com> Cc: Allen <allen.lkml@gmail.com> Cc: linux-mmc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-omap@vger.kernel.org Cc: linux-usb@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-05-22mmc: jz4740: Let the pinctrl driver configure the pinsPaul Cercueil
Now that the JZ4740 and similar SoCs have a pinctrl driver, we rely on the pins being properly configured before the driver probes. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-04-24mmc: use new core function mmc_get_dma_dirHeiner Kallweit
Use new core function mmc_get_dma_dir(). Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: delete is_first_req parameter from pre-request callbackLinus Walleij
The void (*pre_req) callback in the struct mmc_host_ops vtable is passing an argument "is_first_req" indicating whether this is the first request or not. None of the in-kernel users use this parameter: instead, since they all just do variants of dma_map* they use the DMA cookie to indicate whether a pre* callback has already been done for a request when they decide how to handle it. Delete the parameter from the callback and all users, as it is just pointless cruft. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-07-07timers: Remove set_timer_slack() leftoversThomas Gleixner
We now have implicit batching in the timer wheel. The slack API is no longer used, so remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Andrew F. Davis <afd@ti.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Chris Mason <clm@fb.com> Cc: David S. Miller <davem@davemloft.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: George Spelvin <linux@sciencehorizons.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: John Stultz <john.stultz@linaro.org> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathias Nyman <mathias.nyman@intel.com> Cc: Pali Rohár <pali.rohar@gmail.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Sebastian Reichel <sre@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mmc@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: netdev@vger.kernel.org Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160704094342.189813118@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-29mmc: jz4740_mmc: remove the MMC_DATA_STREAM flagJaehoon Chung
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-09-09mmc: remove .owner field for drivers using module_platform_driverPeter Griffin
This patch removes the superflous .owner field for drivers which use the module_platform_driver API, as this is overriden in platform_driver_register anyway. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-09-09mmc: jz4740: prepare next dma transfer in parallel with current transferApelete Seketeli
Make use of the MMC asynchronous request capability to prepare the next DMA transfer request in parallel with the current transfer. This is done by adding pre-request and post-request callbacks that are used by the MMC framework during an active data transfer. It should help reduce the impact of DMA preparation overhead on the SD card performance. Signed-off-by: Apelete Seketeli <apelete@seketeli.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-09-09mmc: jz4740: add dma infrastructure for data transfersApelete Seketeli
Until now the MMC driver for JZ4740 SoC was relying on PIO mode only for data transfers. This patch allows the use of DMA for data trasnfers in addition to PIO mode by relying on DMA Engine. DMA tranfers performance might be further improved by taking advantage of the asynchronous request capability of the MMC framework. Signed-off-by: Apelete Seketeli <apelete@seketeli.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12mmc: jz4740: don't wait for PRG_DONE after stop command with R1 responseAlex Smith
As of commit bcc3e1726d ("mmc: block: Use R1 responses for stop cmds for read requests"), stop commands for reads do not have MMC_RSP_BUSY set. In this case we should not wait for a PRG_DONE IRQ after sending the stop command: it will not get raised when the busy flag is not set, causing the request to fail with a timeout. Signed-off-by: Alex Smith <alex.smith@imgtec.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Chris Ball <chris@printf.net> Cc: James Hogan <james.hogan@imgtec.com> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2013-10-30mmc: jz4740: Move away from using deprecated APIsUlf Hansson
Suspend and resume of cards are being handled from the protocol layer and consequently the mmc_suspend|resume_host APIs are deprecated. This means we can simplify the suspend|resume callbacks by removing the use of the deprecated APIs. Cc: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-08-24mmc: slot-gpio: Add debouncing capability to mmc_gpio_request_cd()Laurent Pinchart
Add a debounce parameter to the mmc_gpio_request_cd() function that enables GPIO debouncing when set to a non-zero value. This can be used by MMC host drivers to enable debouncing on the card detect signal. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-08-24mmc: jz4740: fix return value check in jz4740_mmc_probe()Wei Yongjun
In case of error, the function devm_ioremap_resource() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Also there is already a error message within devm_ioremap_resource(), so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-06-27mmc: jz4740: Use managed resourcesLars-Peter Clausen
Use managed resources for the mmio memory region and the clock. Makes the code a bit shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-06-27mmc: jz4740: Use slot-gpio helpersLars-Peter Clausen
Use the slot-gpio helpers to handle the write protect and card detect GPIO pins instead of re-implementing the same functionality in the driver. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-06-27mmc: jz4740: Use SIMPLE_DEV_PM_OPSLars-Peter Clausen
It's a bit shorter than open-conding it. While we are at it also make jz4740_mmc_pm_ops static. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Chris Ball <cjb@laptop.org>
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