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alistair23-linux/drivers/mmc/core/mmc_ops.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 00:55:01 -06:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
mmc: Separate out protocol ops Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-24 14:46:55 -07:00
/*
mmc: update header file paths Make sure all headers in the files reflect their true position in the tree. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-07-11 12:04:50 -06:00
* linux/drivers/mmc/core/mmc_ops.h
mmc: Separate out protocol ops Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-24 14:46:55 -07:00
*
* Copyright 2006-2007 Pierre Ossman
*/
#ifndef _MMC_MMC_OPS_H
#define _MMC_MMC_OPS_H
mmc: core: First step in cleaning up private mmc header files This is the first step in cleaning up the private mmc header files. In this change we makes sure each header file builds standalone, as that helps to resolve dependencies. While changing this, it also seems reasonable to stop including other headers from inside a header itself which it don't depend upon. Additionally, in some cases such dependencies are better resolved by forward declaring the needed struct. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
2017-01-13 06:14:07 -07:00
#include <linux/types.h>
struct mmc_host;
struct mmc_card;
mmc: Separate out protocol ops Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-24 14:46:55 -07:00
int mmc_select_card(struct mmc_card *card);
int mmc_deselect_cards(struct mmc_host *host);
mmc: implement Driver Stage Register handling Some eMMC and SD cards implement a DSR register that allows to tune raise/fall times and drive strength of the CMD and DATA outputs. The values to use depend on the card in use and the host. It might be needed to reduce the drive strength to prevent voltage peaks above the host's specification. Implement a 'dsr' devicetree property that allows to specify the value to set the DSR to. For non-dt setups the new members of mmc_host can be set by board code. This patch was initially authored by Sascha Hauer. It contains improvements authored by Markus Niebel and Uwe Kleine-König. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-08-19 02:45:51 -06:00
int mmc_set_dsr(struct mmc_host *host);
mmc: Separate out protocol ops Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-24 14:46:55 -07:00
int mmc_go_idle(struct mmc_host *host);
int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
int mmc_set_relative_addr(struct mmc_card *card);
int mmc_send_csd(struct mmc_card *card, u32 *csd);
mmc: block: Use __mmc_send_status() and drop get_card_status() The only reason to why the mmc block device driver needs to implements its own version of how to get the status of the card, is that it needs to specify a different amount of retries. Therefore add a new exported function which allows the caller to specify the number of retries and convert everybody to use it, as this simplifies the code. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 02:23:58 -06:00
int __mmc_send_status(struct mmc_card *card, u32 *status, unsigned int retries);
mmc: Separate out protocol ops Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-24 14:46:55 -07:00
int mmc_send_status(struct mmc_card *card, u32 *status);
MMC core learns about SPI Teach the MMC/SD/SDIO core about using SPI mode. - Use mmc_host_is_spi() so enumeration works through SPI signaling and protocols, not just the native versions. - Provide the SPI response type flags with each request issued, including requests from the new lock/unlock code. - Understand that cmd->resp[0] and mmc_get_status() results for SPI return different values than for "native" MMC/SD protocol; this affects resetting, checking card lock status, and some others. - Understand that some commands act a bit differently ... notably: * OP_COND command doesn't return the OCR * APP_CMD status doesn't have an R1_APP_CMD analogue Those changes required some new and updated primitives: - Provide utilities to access two SPI-only requests, and one request that wasn't previously needed: * mmc_spi_read_ocr() ... SPI only * mmc_spi_set_crc() ... SPI only (override by module parm) * mmc_send_cid() ... for use without broadcast mode - Updated internal routines: * Previous mmc_send_csd() modified into mmc_send_cxd_native(); it uses native "R2" responses, which include 16 bytes of data. * Previous mmc_send_ext_csd() becomes new mmc_send_cxd_data() helper for command-and-data access * Bugfix to that mmc_send_cxd_data() code: dma-to-stack is unsafe/nonportable, so kmalloc a bounce buffer instead. - Modified mmc_send_ext_csd() now uses mmc_send_cxd_data() helper - Modified mmc_send_csd(), and new mmc_spi_send_cid(), routines use those helper routines based on whether they're native or SPI The newest categories of cards supported by the MMC stack aren't expected to work yet with SPI: MMC or SD cards with over 4GB data, and SDIO. All those cards support SPI mode, so eventually they should work too. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-08-08 10:11:32 -06:00
int mmc_send_cid(struct mmc_host *host, u32 *cid);
int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
mmc: Test bus-width for old MMC devices Some old MMC devices fail with the 4/8 bits the driver tries to use exclusively. This patch adds a test for the given bus setup and falls back to the lower bit mode (until 1-bit mode) when the test fails. [Major rework and refactoring by tiwai] [Quirk addition and many fixes by prakity] Signed-off-by: Aries Lee <arieslee@jmicron.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Philip Rakity <prakity@marvell.com> Tested-by: Philip Rakity <prakity@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2010-12-15 00:14:24 -07:00
int mmc_bus_test(struct mmc_card *card, u8 bus_width);
mmc: core: Move public functions from core.h to private headers A significant amount of functions are available through the public mmc core.h header file. Let's slim down this public mmc interface, as to prevent users from abusing it, by moving some of the functions to private mmc header files. This change concentrates on moving the functions into private mmc headers, following changes may continue with additional clean-ups, as an example some functions can be turned into static. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
2017-01-13 06:14:08 -07:00
int mmc_interrupt_hpi(struct mmc_card *card);
mmc: core: Add helper function for EXT_CSD support The helper function mmc_can_ext_csd() will return a positive value if the card supports the EXT_CSD register. Start using it at relavant places in the mmc core. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-10-20 03:33:53 -06:00
int mmc_can_ext_csd(struct mmc_card *card);
mmc: core: Move public functions from core.h to private headers A significant amount of functions are available through the public mmc core.h header file. Let's slim down this public mmc interface, as to prevent users from abusing it, by moving some of the functions to private mmc header files. This change concentrates on moving the functions into private mmc headers, following changes may continue with additional clean-ups, as an example some functions can be turned into static. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
2017-01-13 06:14:08 -07:00
int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd);
mmc: core: Make mmc_switch_status() available for mmc core Following changes needs mmc_switch_status() to be available both from mmc.c and mmc_ops.c. Allow that by moving its implementation to mmc_ops.c and make it available via mmc_ops.h. Moving mmc_switch_status() to mmc_ops.c, also enables us to turn mmc_switch_status_error() into static function. So let's take the opportunity to change this as well. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-10-19 03:04:42 -06:00
int mmc_switch_status(struct mmc_card *card);
mmc: mmc: Relax checking for switch errors after HS200 switch The JEDEC specification indicates CMD13 can be used after a HS200 switch to check for errors. However in practice some boards experience CRC errors in the CMD13 response. Consequently, for HS200, CRC errors are not a reliable way to know the switch failed. If there really is a problem, we would expect tuning will fail and the result ends up the same. So change the error condition to ignore CRC errors in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-12-02 04:16:35 -07:00
int __mmc_switch_status(struct mmc_card *card, bool crc_err_fatal);
mmc: core: Convert __mmc_switch() into an internal core function As there are no users of the __mmc_switch() API, except for the mmc core itself, let's convert it from an exported function into an internal. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-09-15 07:19:45 -06:00
int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
mmc: core: Enable __mmc_switch() to change bus speed timing for the host In cases when a speed mode change is requested for mmc cards, a CMD6 is sent by calling __mmc_switch() during the card initialization. The CMD6 leads to the card entering a busy period. When that is completed, the host must parse the CMD6 status to find out whether the change of the speed mode succeeded. To enable the mmc core to poll the card by using CMD13 to find out when the busy period is completed, it's reasonable to make sure polling is done by having the mmc host and the mmc card, being configured to operate at the same selected bus speed timing. Therefore, let's extend __mmc_switch() to take yet another parameter, which allow its callers to update the bus speed timing of the mmc host. In this way, __mmc_switch() also becomes capable of reading and validating the CMD6 status by sending a CMD13, in cases when that's desired. If __mmc_switch() encounters a failure, we make sure to restores the old bus speed timing for the mmc host, before propagating the error code. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com>
2016-11-09 09:33:36 -07:00
unsigned int timeout_ms, unsigned char timing,
bool use_busy_signal, bool send_status, bool retry_crc_err);
mmc: core: Move public functions from core.h to private headers A significant amount of functions are available through the public mmc core.h header file. Let's slim down this public mmc interface, as to prevent users from abusing it, by moving some of the functions to private mmc header files. This change concentrates on moving the functions into private mmc headers, following changes may continue with additional clean-ups, as an example some functions can be turned into static. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
2017-01-13 06:14:08 -07:00
int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
unsigned int timeout_ms);
mmc: core: Cleanup BKOPS support It's been ~6 years ago since we introduced the BKOPS support for eMMC cards. The current code is a bit messy and primarily that's because it prepares to support running BKOPS in an asynchronous mode. However, that mode has never been fully implemented/enabled. Instead BKOPS is always executed in synchronously, when the card has reported an urgent BKOPS level. For these reasons, let's make the code more readable by dropping the unused parts. Let's also rename mmc_start_bkops() to mmc_run_bkops(), as to make it more descriptive. Cc: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-12-10 09:52:40 -07:00
void mmc_run_bkops(struct mmc_card *card);
mmc: core: Move public functions from core.h to private headers A significant amount of functions are available through the public mmc core.h header file. Let's slim down this public mmc interface, as to prevent users from abusing it, by moving some of the functions to private mmc header files. This change concentrates on moving the functions into private mmc headers, following changes may continue with additional clean-ups, as an example some functions can be turned into static. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
2017-01-13 06:14:08 -07:00
int mmc_flush_cache(struct mmc_card *card);
mmc: mmc: Add functions to enable / disable the Command Queue Add helper functions to enable or disable the Command Queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-03-13 06:36:37 -06:00
int mmc_cmdq_enable(struct mmc_card *card);
int mmc_cmdq_disable(struct mmc_card *card);
mmc: Separate out protocol ops Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-24 14:46:55 -07:00
#endif