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path: root/drivers/mmc/host/sdhci.h (follow)
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2019-04-15mmc: sdhci: Remove finish_taskletAdrian Hunter1-1/+2
Remove finish_tasklet. Requests that require DMA-unmapping or sdhci_reset are completed either in the IRQ thread or a workqueue if the completion is not initiated by the IRQ. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Faiz Abbas <faiz_abbas@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-04-15mmc: sdhci: allow host to specify maximum tuning loopsSowjanya Komatineni1-0/+1
As per the Host Controller Standard Specification Version 4.20, limitation of tuning iteration count is removed as PLL locking time can be longer than UHS-1 tuning due to larger PVT fluctuation and it will result in increase of tuning iteration to complete the tuning. This patch creates sdhci_host member tuning_loop_count to allow hosts to specify maximum tuning iterations and also updates execute_tuning to use this specified maximum tuning iteration count. Default tuning_loop_count is set to same as existing loop count of MAX_TUNING_LOOP which is 40 iterations. Tested-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-02-25mmc: sdhci: Add ADMA3 DMA support for V4 enabled hostSowjanya Komatineni1-0/+2
Below are the supported DMA types in Host Control1 Register with Version 4 enable b'00 - SDMA b'01 - Not Used b'10 - ADMA2 b'11 - ADMA2 or ADMA3 ADMA3 uses Command Descriptor to issue an SD command. A multi-block data transfer is performed by using a pair of CMD descriptor and ADMA2 descriptor. ADMA3 performs multiple of multi-block data transfer by using Integrated Descriptor which is more suitable for Command Queuing to fetch both Command and Transfer descriptors. Host Capabilities register indicates the supports of ADMA3 DMA. Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-02-25mmc: sdhci: Fix O2 Host PLL and card detect issueErnest Zhang(WH)1-0/+4
1. O2 Host Controller PLL lock status is not in compliance with CLOCK_CONTROL register bit 1 2. O2 Host Controller card detect function only work when PLL is enabled and locked Signed-off-by: Ernest Zhang <ernest.zhang@bayhubtech.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-17mmc: sdhci: Add quirk to disable LED controlAdrian Hunter1-0/+2
Host controllers may not have a LED signal line, whereas the register updates to control the non-existent LED can be relatively time consuming. Add a quirk to disable LED control. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-17mmc: sdhci: Handle auto-command errorsAdrian Hunter1-1/+6
If the host controller supports auto-commands then enable the auto-command error interrupt and handle it. In the case of auto-CMD23, the error is treated the same as manual CMD23 error. In the case of auto-CMD12, commands-during-transfer are not permitted, so the error handling is treated the same as a data error. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-17mmc: sdhci: Rename SDHCI_ACMD12_ERR and SDHCI_INT_ACMD12ERRAdrian Hunter1-2/+2
The SDHCI_ACMD12_ERR register is used for auto-CMD23 and auto-CMD12 errors, as is the SDHCI_INT_ACMD12ERR interrupt bit. Rename them to SDHCI_AUTO_CMD_STATUS and SDHCI_INT_AUTO_CMD_ERR respectively. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: Add Auto CMD Auto Select supportChunyan Zhang1-0/+2
As SD Host Controller Specification v4.10 documents: Host Controller Version 4.10 defines this "Auto CMD Auto Select" mode. Selection of Auto CMD depends on setting of CMD23 Enable in the Host Control 2 register which indicates whether card supports CMD23. If CMD23 Enable =1, Auto CMD23 is used and if CMD23 Enable =0, Auto CMD12 is used. In case of Version 4.10 or later, use of Auto CMD Auto Select is recommended rather than use of Auto CMD12 Enable or Auto CMD23 Enable. This patch add this new mode support. Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: Add 32-bit block count support for v4 modeChunyan Zhang1-0/+8
Host Controller Version 4.10 re-defines SDMA System Address register as 32-bit Block Count for v4 mode, and SDMA uses ADMA System Address register (05Fh-058h) instead if v4 mode is enabled. Also when using 32-bit block count, 16-bit block count register need to be set to zero. Since using 32-bit Block Count would cause problems for auto-cmd23, it can be chosen via host->quirk2. Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: Add ADMA2 64-bit addressing support for V4 modeChunyan Zhang1-2/+10
ADMA2 64-bit addressing support is divided into V3 mode and V4 mode. So there are two kinds of descriptors for ADMA2 64-bit addressing i.e. 96-bit Descriptor for V3 mode, and 128-bit Descriptor for V4 mode. 128-bit Descriptor is aligned to 8-byte. For V4 mode, ADMA2 64-bit addressing is enabled via Host Control 2 register. Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> [Ulf: Fixed conflict while applying] Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: Add sd host v4 modeChunyan Zhang1-0/+3
For SD host controller version 4.00 or later ones, there're two modes of implementation - Version 3.00 compatible mode or Version 4 mode. This patch introduced an interface to enable v4 mode. Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: Add version V4 definitionChunyan Zhang1-0/+3
Added definitions for v400, v410, v420. Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: introduce adma_write_desc() hook to struct sdhci_opsJisheng Zhang1-0/+4
Add this hook so that it can be overridden with driver specific implementations. We also let the original sdhci_adma_write_desc() accept &desc so that the function can set its new value. Then export the function so that it could be reused by driver's specific implementations. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: add adma_table_cnt member to struct sdhci_hostJisheng Zhang1-0/+3
This patch adds adma_table_cnt member to struct sdhci_host to give more flexibility to drivers to control the ADMA table count. Default value of adma_table_cnt is set to (SDHCI_MAX_SEGS * 2 + 1). Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: Export sdhci_request()Aapo Vienamo1-0/+1
Allow SDHCI drivers to hook code before and after sdhci_request() by making it externally visible. Signed-off-by: Aapo Vienamo <avienamo@nvidia.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-08mmc: sdhci: add tuning error codesYinbo Zhu1-0/+1
This patch is to add tuning error codes to judge tuning state Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-07-30mmc: sdhci: Export sdhci tuning function symbolernest.zhang1-0/+5
Export sdhci tuning function symbols which are used by other SD Host controller driver modules. Signed-off-by: ernest.zhang <ernest.zhang@bayhubtech.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03mmc: sdhci: Program a relatively accurate SW timeout valueKishon Vijay Abraham I1-0/+10
sdhci has a 10 second timeout to catch devices that stop responding. In the case of quirk SDHCI_QUIRK2_DISABLE_HW_TIMEOUT, instead of programming 10 second arbitrary value, calculate the total time it would take for the entire transfer to happen and program the timeout value accordingly. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-05-03mmc: sdhci: Add quirk to disable HW timeoutAdrian Hunter1-0/+5
Add quirk to disable HW timeout if the requested timeout is more than the maximum obtainable timeout. Also, if the quirk is set and ->get_max_timeout_count() is not implemented, max_busy_timeout is set to zero. Based-on-patch-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-31mmc: sdhci: Implement an SDHCI-specific bounce bufferLinus Walleij1-0/+3
The bounce buffer is gone from the MMC core, and now we found out that there are some (crippled) i.MX boards out there that have broken ADMA (cannot do scatter-gather), and also broken PIO so they must use SDMA. Closer examination shows a less significant slowdown also on SDMA-only capable Laptop hosts. SDMA sets down the number of segments to one, so that each segment gets turned into a singular request that ping-pongs to the block layer before the next request/segment is issued. Apparently it happens a lot that the block layer send requests that include a lot of physically discontiguous segments. My guess is that this phenomenon is coming from the file system. These devices that cannot handle scatterlists in hardware can see major benefits from a DMA-contiguous bounce buffer. This patch accumulates those fragmented scatterlists in a physically contiguous bounce buffer so that we can issue bigger DMA data chunks to/from the card. When tested with a PCI-integrated host (1217:8221) that only supports SDMA: 0b:00.0 SD Host controller: O2 Micro, Inc. OZ600FJ0/OZ900FJ0/OZ600FJS SD/MMC Card Reader Controller (rev 05) This patch gave ~1Mbyte/s improved throughput on large reads and writes when testing using iozone than without the patch. dmesg: sdhci-pci 0000:0b:00.0: SDHCI controller found [1217:8221] (rev 5) mmc0 bounce up to 128 segments into one, max segment size 65536 bytes mmc0: SDHCI controller on PCI [0000:0b:00.0] using DMA On the i.MX SDHCI controllers on the crippled i.MX 25 and i.MX 35 the patch restores the performance to what it was before we removed the bounce buffers. Cc: Pierre Ossman <pierre@ossman.eu> Cc: Benoît Thébaudeau <benoit@wsystem.com> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Benjamin Beckmeyer <beckmeyer.b@rittal.de> Cc: stable@vger.kernel.org # v4.14+ Fixes: de3ee99b097d ("mmc: Delete bounce buffer handling") Tested-by: Benjamin Beckmeyer <beckmeyer.b@rittal.de> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-17mmc: sdhci: Handle failure of enable_irq_wake()Adrian Hunter1-0/+1
Now that sdhci_enable_irq_wakeups() is a local function, change it to return whether the IRQ wakeup was successfully enabled. This is in preparation for adding more conditions for whether IRQ wakeup is enabled. Note it is assumed, for SDHCI devices, that suspend is more important than wakeup, so we continue to suspend regardless. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-17mmc: sdhci: Stop exporting sdhci_enable_irq_wakeups()Adrian Hunter1-1/+0
Now that it is not being used by any drivers, stop exporting it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-08-30mmc: sdhci: Add quirk to indicate MMC_RSP_136 has CRCKishon Vijay Abraham I1-0/+2
TI's implementation of sdhci controller used in DRA7 SoC's has CRC in responses with length 136 bits. Add quirk to indicate the controller has CRC in MMC_RSP_136. If this quirk is set sdhci library shouldn't shift the response present in SDHCI_RESPONSE register. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-08-30mmc: sdhci: add sdma_boundary member to struct sdhci_hostSrinivas Kandagatla1-0/+3
This patch adds sdma_boundary member to struct sdhci_host to give more flexibility to drivers to control the sdma boundary buffer value and also to fix issue on some sdhci controllers which are broken when HOST SDMA Buffer Boundary is programmed in Block Size Register (0x04) when using ADMA. Qualcomm sdhci controller is one of such type, writing to this bits is un-supported. Default value of sdma_boundary is set to SDHCI_DEFAULT_BOUNDARY_ARG. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci: Control the delay between tuning commandsAdrian Hunter1-0/+2
The delay between tuning commands for SD cards is not part of the specification. A driver that needs it probably needs it for eMMC too, whereas most drivers would probably like to set it to 0. Make it a host member (host->tuning_delay) that defaults to the existing behaviour. Drivers can set it to zero to eliminate the delay, or set it to a positive value to always have a delay. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci: Export sdhci_enable_sdio_irq() from sdhci.cHu Ziji1-0/+1
Export sdhci_enable_sdio_irq() from sdhci.c. Thus vendor SDHC driver can implement its specific SDIO irq control. Signed-off-by: Hu Ziji <huziji@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci: Export sdhci_start_signal_voltage_switch() in sdhci.cHu Ziji1-0/+2
Export sdhci_start_signal_voltage_switch() from sdhci.c. Thus vendor sdhci driver can implement its own signal voltage switch routine. Signed-off-by: Hu Ziji <huziji@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci: Export sdhci_set_ios() from sdhci.cHu Ziji1-0/+1
Export sdhci_set_ios() in sdhci.c. Thus vendor sdhci driver can implement its own set_ios() routine. Signed-off-by: Hu Ziji <huziji@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci: clarify the get_timeout_clock callbackShawn Lin1-0/+1
Currently the get_timeout_clock callback doesn't clearly have a statement that it needs the variant drivers to return the timeout clock rate in kHz if the SDHCI_TIMEOUT_CLK_UNIT isn't present, otherwise the variant drivers should return it in MHz. It's also very likely that further variant drivers which are going to use this callback will be confused by this situation. Given the fact that moderm sdhci variant hosts are very prone to get the timeout clock from common clock framework (actually the only three users did that), it's more natural to return the value in Hz and we make an explicit comment there. Then we put the unit conversion inside the sdhci core. Thus will improve the code and prevent further misuses. Reported-by: Anssi Hannula <anssi.hannula@bitwise.fi> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-24mmc: sdhci: Add CQE supportAdrian Hunter1-0/+19
Add an interrupt hook and helper functions for enabling, disabling and delivering interrupts to a CQE. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Ludovic Desroches <ludovic.desroches@microchip.com>
2017-04-24mmc: sdhci: Add sdhci_cleanup_hostAdrian Hunter1-0/+1
Add sdhci_cleanup_host() to cleanup __sdhci_add_host(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Ludovic Desroches <ludovic.desroches@microchip.com>
2017-04-24mmc: sdhci: Get rid of 'extern' in header fileAdrian Hunter1-17/+15
Get rid of unnecessary 'extern' in header file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Ludovic Desroches <ludovic.desroches@microchip.com>
2017-04-24mmc: sdhci: Export sdhci_dumpregsAdrian Hunter1-0/+2
Export sdhci_dumpregs so that it can be called by drivers. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Ludovic Desroches <ludovic.desroches@microchip.com>
2017-04-24mmc: sdhci: Remove ->select_drive_strength() callbackAdrian Hunter1-4/+0
Drivers can use the host operation directly, so remove this now unused callback. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Ludovic Desroches <ludovic.desroches@microchip.com>
2017-02-13mmc: host: Include interrupt.h in mmc host drivers that depends on itUlf Hansson1-0/+1
An mmc host driver shouldn't rely on interrupt.h being included by another public mmc header. Instead make that dependency explicit by including interrupt.h in those host drivers that depends on it. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2017-02-13mmc: sdhci: Include leds.hUlf Hansson1-0/+1
Don't rely on host.h to include the leds.h header, but instead include it explicitly because the driver depends on it. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com>
2016-12-08mmc: sdhci: export sdhci_execute_tuning()Masahiro Yamada1-0/+1
Some SDHCI-compat controllers support not only SD, but also eMMC, but they use different commands for tuning: CMD19 for SD, CMD21 for eMMC. Due to the difference of the underlying mechanism, some controllers (at least, the Cadence IP is the case) provide their own registers for the eMMC tuning. This commit will be useful when we want to override .execute_tuning callback (for eMMC HS200 tuning), but still let it fall back to sdhci_execute_tuning() for SD timing. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci: Factor out sdhci_enable_clkRitesh Harjani1-0/+1
Factor out sdhci_enable_clk from sdhci_set_clock and make it EXPORT_SYMBOL so that it can be called. Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci: remove unneeded (void *) casts in sdhci_(pltfm_)priv()Masahiro Yamada1-1/+1
The type of host->private is (unsigned long *). No cast is needed to return an opaque pointer. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-18mmc: sdhci-of-esdhc: fixup PRESENT_STATE readMichael Walle1-0/+1
Since commit 87a18a6a5652 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()") the ESDHC driver is broken: mmc0: Card stuck in programming state! __mmc_switch mmc0: error -110 whilst initialising MMC card Since this commit __mmc_switch() uses ->card_busy(), which is sdhci_card_busy() for the esdhc driver. sdhci_card_busy() uses the PRESENT_STATE register, specifically the DAT0 signal level bit. But the ESDHC uses a non-conformant PRESENT_STATE register, thus a read fixup is required to make the driver work again. Signed-off-by: Michael Walle <michael@walle.cc> Fixes: 87a18a6a5652 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()") Acked-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # v4.8+ Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-10-10mmc: sdhci: Rename sdhci_set_power() to sdhci_set_power_noreg()Adrian Hunter1-0/+2
Unlike other cases, sdhci_set_power() does not reflect the default implementation of the ->set_power() callback. Rename it and create sdhci_set_power() that is the default implementation. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-09-26mmc: sdhci-of-arasan: Set controller to test mode when no CD bitZach Brown1-0/+2
The sdhci controller on xilinx zynq devices will not function unless the CD bit is provided. http://www.xilinx.com/support/answers/61064.html In cases where it is impossible to provide the CD bit in hardware, setting the controller to test mode and then setting inserted to true will get the controller to function without the CD bit. When the device has the property xlnx,fails-without-test-cd the driver changes the controller to test mode and sets test inserted to true to make the controller function. Signed-off-by: Zach Brown <zach.brown@ni.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-09-26mmc: sdhci: Remove ->platform_init() callback as it's no longer usedUlf Hansson1-1/+0
The commit 1ef5e49e46b9 ("mmc: sdhci-of-esdhc: add/remove some quirks according to vendor version") moved sdhci-of-esdhc away from using the ->platform_init() callback. As it was the only user of it and that it seems reasonable to believe that it won't be needed again, let's just remove it. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com>
2016-07-25mmc: sdhci: add standard hw auto retuning supportDong Aisheng1-0/+3
If HW supports SDHCI_TUNING_MODE_3 which is auto retuning, we won't retune during runtime suspend and resume, instead we use Re-tuning Request signaled via SDHCI_INT_RETUNE interrupt to do retuning and hw auto retuning during data transfer to guarantee the signal sample window correction. This can avoid a mass of repeatedly retuning during small file system data access and improve the performance. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-07-25mmc: sdhci: add define for suspend/resume capabilityStefan Wahren1-0/+1
This patch adds the missing define for the suspend/resume capability (according to SD Host Controller spec). Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Scott Branden <scott.branden@broadcom.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-07-25mmc: sdhci: Allow for finishing multiple requestsAdrian Hunter1-1/+4
In order to support commands during data transfer, there will have to be up to two active requests (mrqs) at a time, instead of just one. That means recording which request is finished. Doing that obsoletes host->mrq which is therefore removed. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-07-25mmc: sdhci: Separate timer timeout for command and data requestsAdrian Hunter1-0/+1
In order to support commands during data transfer, there will have to be up to two active requests (mrqs) at a time, instead of just one. Provide two timers instead of just one. One of the timers is for requests that do not use the data lines, and the other one is for requests that do. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-07-25mmc: sdhci: Track whether a reset is pendingAdrian Hunter1-0/+1
SDHCI recovers from errors by resetting the cmd and data circuits. Until that is done, there very well might be more interrupts, so ignore them in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-07-25mmc: sdhci: Get rid of host->busy_handleAdrian Hunter1-1/+0
Now that there is host->data_cmd to record the command for which a data interrupt is expected, it is possible to determine whether a command with busy signaling has completed without an extra flag. So host->busy_handle is not needed. Remove it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-07-25mmc: sdhci: Record what command is using the data linesAdrian Hunter1-0/+1
In order to support commands during data transfer, there must be a distinction between the command that is using the command line (and for which a command interrupt is expected) and the command that is using the data lines (for which a data interrupt is expected). There is host->cmd for the command line, but there is only host->data for the data lines, which is a different structure, does not represent the command in use, and is anyway NULL in the case of commands that use the data lines for busy signalling instead of data transfer. Introduce host->data_cmd to record what command is using the data lines, and use that instead of host->cmd when referring to the data command. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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