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![Linus Torvalds](/assets/img/avatar_default.png)
- Let the dma map ops deal with bouncing and drop dma_max_pfn() from the dma-mapping interface for ARM - Convert the generic MMC DT doc to YAML schemas - Drop questionable support for powered-on re-init of SDIO cards at runtime resume and for SDIO HW reset - Prevent questionable re-init of powered-on removable SDIO cards at system resume - Cleanup and clarify some SDIO core code MMC host: - tmio: Make runtime PM enablement more flexible for variants - tmio/renesas_sdhi: Rename DT doc tmio_mmc.txt to renesas,sdhi.txt to clarify - sdhci-pci: Add support for Intel EHL - sdhci-pci-o2micro: Enable support for 8-bit bus - sdhci-msm: Prevent acquiring a mutex while holding a spin_lock - sdhci-of-esdhc: Improve clock management and tuning - sdhci_am654: Enable support for 4 and 8-bit bus on J721E - sdhci-sprd: Use pinctrl for a proper signal voltage switch - sdhci-sprd: Add support for HS400 enhanced strobe mode - sdhci-sprd: Enable PHY DLL and allow delay config to stabilize the clock - sdhci-sprd: Add support for optional gate clock - sunxi-mmc: Convert DT doc to YAML schemas - meson-gx: Add support for broken DRAM access for DMA MEMSTICK core: - Fixup error path of memstick_init() -----BEGIN PGP SIGNATURE----- iQJLBAABCgA1FiEEugLDXPmKSktSkQsV/iaEJXNYjCkFAl0l7iYXHHVsZi5oYW5z c29uQGxpbmFyby5vcmcACgkQ/iaEJXNYjCnZnRAA0nBPUsFMl559lySNwO+WjBVo z58dw+J3jDTZ5gFGAUOrnYkZfGEweRwzWnfED6Dyh+e+SJiRnSZH8XRTJEAUeTgi 9KWVr+VGpjZyctNJaMKTeJbPiu/50UVRLJeOGcdJWdMMC9ZlJjKKC2xgyVsInq7P wKE8T3k5afNxABgrKtOTKKONCPRNMVyHdMXzUNFLhlj/du9rR5K7f429RhpPU6GU 7jQ7z9147mwRYm5frn1nx3IvrJUaGyiiSs1ln1PnOV9LsUfVP5NluvbYA6nS4e3V jU64Rvf+9RIHTt2z+ZWTjqrNb/2Ug4faPHc7D4Yl4PEsesR51+tWbpLWUX7Mmm6d 2gbWFv3kzYvSU2G4ztMTrLcsQmd64W1GocXFPvh/UdfQf1200abenj17Gdl0h3Ze +NouYXwMw+n1wHNciotpaR8OMHGV6zo0dvDczpc3r73wzxoeNGdiuVlppFcIGvdA 950oPiqNrFtz2S1DZ9HLeISMajRts7B1nvsr9a/XXa8Us1M6whQDJbMDTynR4Fky j8Sw+9nCk0gupuNcfOrHN9TfOf6Tc5BtIvGqhVF6wmDRtRubfc9HReRheioU67EO PsWe+xpS/8pg/lJNzBm6i0isCmce+rNbZTtpil33yS4Tv85KhGw1XOZ6HLoPrOmN HYPJtDUvOMKlH6M1rJM= =vkWp -----END PGP SIGNATURE----- Merge tag 'mmc-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC updates from Ulf Hansson: "MMC core: - Let the dma map ops deal with bouncing and drop dma_max_pfn() from the dma-mapping interface for ARM - Convert the generic MMC DT doc to YAML schemas - Drop questionable support for powered-on re-init of SDIO cards at runtime resume and for SDIO HW reset - Prevent questionable re-init of powered-on removable SDIO cards at system resume - Cleanup and clarify some SDIO core code MMC host: - tmio: Make runtime PM enablement more flexible for variants - tmio/renesas_sdhi: Rename DT doc tmio_mmc.txt to renesas,sdhi.txt to clarify - sdhci-pci: Add support for Intel EHL - sdhci-pci-o2micro: Enable support for 8-bit bus - sdhci-msm: Prevent acquiring a mutex while holding a spin_lock - sdhci-of-esdhc: Improve clock management and tuning - sdhci_am654: Enable support for 4 and 8-bit bus on J721E - sdhci-sprd: Use pinctrl for a proper signal voltage switch - sdhci-sprd: Add support for HS400 enhanced strobe mode - sdhci-sprd: Enable PHY DLL and allow delay config to stabilize the clock - sdhci-sprd: Add support for optional gate clock - sunxi-mmc: Convert DT doc to YAML schemas - meson-gx: Add support for broken DRAM access for DMA MEMSTICK core: - Fixup error path of memstick_init()" * tag 'mmc-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (52 commits) mmc: sdhci_am654: Add dependency on MMC_SDHCI_AM654 mmc: alcor: remove a redundant greater or equal to zero comparison mmc: sdhci-msm: fix mutex while in spinlock mmc: sdhci_am654: Make some symbols static dma-mapping: remove dma_max_pfn mmc: core: let the dma map ops handle bouncing dt-binding: mmc: rename tmio_mmc.txt to renesas,sdhi.txt mmc: sdhci-sprd: Add pin control support for voltage switch dt-bindings: mmc: sprd: Add pinctrl support mmc: sdhci-sprd: Add start_signal_voltage_switch ops mmc: sdhci-pci: Add support for Intel EHL mmc: tmio: Use dma_max_mapping_size() instead of a workaround mmc: sdio: Drop unused in-parameter from mmc_sdio_init_card() mmc: sdio: Drop unused in-parameter to mmc_sdio_reinit_card() mmc: sdio: Don't re-initialize powered-on removable SDIO cards at resume mmc: sdio: Drop powered-on re-init at runtime resume and HW reset mmc: sdio: Move comment about re-initialization to mmc_sdio_reinit_card() mmc: sdio: Drop mmc_claim|release_host() in mmc_sdio_power_restore() mmc: sdio: Turn sdio_run_irqs() into static mmc: sdhci: Fix indenting on SDHCI_CTRL_8BITBUS ...
583 lines
20 KiB
C
583 lines
20 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/include/linux/mmc/host.h
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*
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* Host driver specific definitions.
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*/
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#ifndef LINUX_MMC_HOST_H
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#define LINUX_MMC_HOST_H
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#include <linux/sched.h>
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#include <linux/device.h>
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#include <linux/fault-inject.h>
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#include <linux/mmc/core.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/pm.h>
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#include <linux/dma-direction.h>
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struct mmc_ios {
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unsigned int clock; /* clock rate */
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unsigned short vdd;
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unsigned int power_delay_ms; /* waiting for stable power */
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/* vdd stores the bit number of the selected voltage range from below. */
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unsigned char bus_mode; /* command output mode */
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#define MMC_BUSMODE_OPENDRAIN 1
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#define MMC_BUSMODE_PUSHPULL 2
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unsigned char chip_select; /* SPI chip select */
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#define MMC_CS_DONTCARE 0
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#define MMC_CS_HIGH 1
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#define MMC_CS_LOW 2
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unsigned char power_mode; /* power supply mode */
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#define MMC_POWER_OFF 0
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#define MMC_POWER_UP 1
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#define MMC_POWER_ON 2
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#define MMC_POWER_UNDEFINED 3
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unsigned char bus_width; /* data bus width */
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#define MMC_BUS_WIDTH_1 0
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#define MMC_BUS_WIDTH_4 2
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#define MMC_BUS_WIDTH_8 3
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unsigned char timing; /* timing specification used */
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#define MMC_TIMING_LEGACY 0
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#define MMC_TIMING_MMC_HS 1
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#define MMC_TIMING_SD_HS 2
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#define MMC_TIMING_UHS_SDR12 3
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#define MMC_TIMING_UHS_SDR25 4
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#define MMC_TIMING_UHS_SDR50 5
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#define MMC_TIMING_UHS_SDR104 6
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#define MMC_TIMING_UHS_DDR50 7
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#define MMC_TIMING_MMC_DDR52 8
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#define MMC_TIMING_MMC_HS200 9
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#define MMC_TIMING_MMC_HS400 10
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unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */
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#define MMC_SIGNAL_VOLTAGE_330 0
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#define MMC_SIGNAL_VOLTAGE_180 1
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#define MMC_SIGNAL_VOLTAGE_120 2
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unsigned char drv_type; /* driver type (A, B, C, D) */
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#define MMC_SET_DRIVER_TYPE_B 0
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#define MMC_SET_DRIVER_TYPE_A 1
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#define MMC_SET_DRIVER_TYPE_C 2
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#define MMC_SET_DRIVER_TYPE_D 3
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bool enhanced_strobe; /* hs400es selection */
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};
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struct mmc_host;
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struct mmc_host_ops {
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/*
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* It is optional for the host to implement pre_req and post_req in
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* order to support double buffering of requests (prepare one
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* request while another request is active).
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* pre_req() must always be followed by a post_req().
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* To undo a call made to pre_req(), call post_req() with
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* a nonzero err condition.
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*/
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void (*post_req)(struct mmc_host *host, struct mmc_request *req,
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int err);
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void (*pre_req)(struct mmc_host *host, struct mmc_request *req);
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void (*request)(struct mmc_host *host, struct mmc_request *req);
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/*
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* Avoid calling the next three functions too often or in a "fast
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* path", since underlaying controller might implement them in an
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* expensive and/or slow way. Also note that these functions might
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* sleep, so don't call them in the atomic contexts!
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*/
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/*
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* Notes to the set_ios callback:
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* ios->clock might be 0. For some controllers, setting 0Hz
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* as any other frequency works. However, some controllers
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* explicitly need to disable the clock. Otherwise e.g. voltage
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* switching might fail because the SDCLK is not really quiet.
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*/
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void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
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/*
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* Return values for the get_ro callback should be:
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* 0 for a read/write card
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* 1 for a read-only card
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* -ENOSYS when not supported (equal to NULL callback)
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* or a negative errno value when something bad happened
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*/
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int (*get_ro)(struct mmc_host *host);
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/*
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* Return values for the get_cd callback should be:
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* 0 for a absent card
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* 1 for a present card
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* -ENOSYS when not supported (equal to NULL callback)
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* or a negative errno value when something bad happened
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*/
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int (*get_cd)(struct mmc_host *host);
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void (*enable_sdio_irq)(struct mmc_host *host, int enable);
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void (*ack_sdio_irq)(struct mmc_host *host);
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/* optional callback for HC quirks */
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void (*init_card)(struct mmc_host *host, struct mmc_card *card);
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int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
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/* Check if the card is pulling dat[0:3] low */
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int (*card_busy)(struct mmc_host *host);
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/* The tuning command opcode value is different for SD and eMMC cards */
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int (*execute_tuning)(struct mmc_host *host, u32 opcode);
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/* Prepare HS400 target operating frequency depending host driver */
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int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
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/* Prepare switch to DDR during the HS400 init sequence */
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int (*hs400_prepare_ddr)(struct mmc_host *host);
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/* Prepare for switching from HS400 to HS200 */
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void (*hs400_downgrade)(struct mmc_host *host);
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/* Complete selection of HS400 */
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void (*hs400_complete)(struct mmc_host *host);
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/* Prepare enhanced strobe depending host driver */
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void (*hs400_enhanced_strobe)(struct mmc_host *host,
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struct mmc_ios *ios);
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int (*select_drive_strength)(struct mmc_card *card,
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unsigned int max_dtr, int host_drv,
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int card_drv, int *drv_type);
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void (*hw_reset)(struct mmc_host *host);
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void (*card_event)(struct mmc_host *host);
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/*
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* Optional callback to support controllers with HW issues for multiple
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* I/O. Returns the number of supported blocks for the request.
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*/
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int (*multi_io_quirk)(struct mmc_card *card,
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unsigned int direction, int blk_size);
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};
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struct mmc_cqe_ops {
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/* Allocate resources, and make the CQE operational */
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int (*cqe_enable)(struct mmc_host *host, struct mmc_card *card);
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/* Free resources, and make the CQE non-operational */
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void (*cqe_disable)(struct mmc_host *host);
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/*
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* Issue a read, write or DCMD request to the CQE. Also deal with the
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* effect of ->cqe_off().
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*/
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int (*cqe_request)(struct mmc_host *host, struct mmc_request *mrq);
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/* Free resources (e.g. DMA mapping) associated with the request */
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void (*cqe_post_req)(struct mmc_host *host, struct mmc_request *mrq);
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/*
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* Prepare the CQE and host controller to accept non-CQ commands. There
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* is no corresponding ->cqe_on(), instead ->cqe_request() is required
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* to deal with that.
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*/
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void (*cqe_off)(struct mmc_host *host);
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/*
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* Wait for all CQE tasks to complete. Return an error if recovery
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* becomes necessary.
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*/
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int (*cqe_wait_for_idle)(struct mmc_host *host);
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/*
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* Notify CQE that a request has timed out. Return false if the request
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* completed or true if a timeout happened in which case indicate if
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* recovery is needed.
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*/
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bool (*cqe_timeout)(struct mmc_host *host, struct mmc_request *mrq,
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bool *recovery_needed);
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/*
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* Stop all CQE activity and prepare the CQE and host controller to
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* accept recovery commands.
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*/
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void (*cqe_recovery_start)(struct mmc_host *host);
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/*
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* Clear the queue and call mmc_cqe_request_done() on all requests.
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* Requests that errored will have the error set on the mmc_request
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* (data->error or cmd->error for DCMD). Requests that did not error
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* will have zero data bytes transferred.
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*/
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void (*cqe_recovery_finish)(struct mmc_host *host);
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};
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struct mmc_async_req {
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/* active mmc request */
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struct mmc_request *mrq;
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/*
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* Check error status of completed mmc request.
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* Returns 0 if success otherwise non zero.
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*/
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enum mmc_blk_status (*err_check)(struct mmc_card *, struct mmc_async_req *);
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};
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/**
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* struct mmc_slot - MMC slot functions
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*
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* @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL
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* @handler_priv: MMC/SD-card slot context
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*
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* Some MMC/SD host controllers implement slot-functions like card and
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* write-protect detection natively. However, a large number of controllers
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* leave these functions to the CPU. This struct provides a hook to attach
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* such slot-function drivers.
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*/
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struct mmc_slot {
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int cd_irq;
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bool cd_wake_enabled;
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void *handler_priv;
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};
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/**
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* mmc_context_info - synchronization details for mmc context
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* @is_done_rcv wake up reason was done request
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* @is_new_req wake up reason was new request
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* @is_waiting_last_req mmc context waiting for single running request
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* @wait wait queue
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*/
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struct mmc_context_info {
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bool is_done_rcv;
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bool is_new_req;
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bool is_waiting_last_req;
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wait_queue_head_t wait;
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};
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struct regulator;
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struct mmc_pwrseq;
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struct mmc_supply {
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struct regulator *vmmc; /* Card power supply */
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struct regulator *vqmmc; /* Optional Vccq supply */
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};
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struct mmc_ctx {
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struct task_struct *task;
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};
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struct mmc_host {
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struct device *parent;
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struct device class_dev;
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int index;
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const struct mmc_host_ops *ops;
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struct mmc_pwrseq *pwrseq;
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unsigned int f_min;
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unsigned int f_max;
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unsigned int f_init;
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u32 ocr_avail;
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u32 ocr_avail_sdio; /* SDIO-specific OCR */
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u32 ocr_avail_sd; /* SD-specific OCR */
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u32 ocr_avail_mmc; /* MMC-specific OCR */
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#ifdef CONFIG_PM_SLEEP
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struct notifier_block pm_notify;
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#endif
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u32 max_current_330;
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u32 max_current_300;
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u32 max_current_180;
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#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
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#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
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#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
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#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
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#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
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#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
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#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
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#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
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#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
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#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
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#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
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#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
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#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
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#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
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#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
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#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
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#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
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u32 caps; /* Host capabilities */
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#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
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#define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
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#define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
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#define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
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#define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
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#define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
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#define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */
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#define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */
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#define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
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#define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
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#define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */
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#define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */
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#define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */
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#define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */
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#define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */
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#define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */
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#define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */
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#define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */
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#define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */
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#define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */
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#define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */
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#define MMC_CAP_UHS (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | \
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MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \
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MMC_CAP_UHS_DDR50)
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#define MMC_CAP_SYNC_RUNTIME_PM (1 << 21) /* Synced runtime PM suspends. */
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#define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */
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#define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */
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#define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */
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#define MMC_CAP_DONE_COMPLETE (1 << 27) /* RW reqs can be completed within mmc_request_done() */
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#define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */
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#define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */
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#define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
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#define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */
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u32 caps2; /* More host capabilities */
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#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
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#define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */
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#define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */
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#define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */
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#define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
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MMC_CAP2_HS200_1_2V_SDR)
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#define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */
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#define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */
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#define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */
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#define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */
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#define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */
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#define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \
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MMC_CAP2_HS400_1_2V)
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#define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V)
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#define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
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#define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
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#define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
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#define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
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#define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
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#define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
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#define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */
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#define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */
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#define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */
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#define MMC_CAP2_AVOID_3_3V (1 << 25) /* Host must negotiate down from 3.3V */
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int fixed_drv_type; /* fixed driver type for non-removable media */
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mmc_pm_flag_t pm_caps; /* supported pm features */
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/* host specific block data */
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unsigned int max_seg_size; /* see blk_queue_max_segment_size */
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unsigned short max_segs; /* see blk_queue_max_segments */
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unsigned short unused;
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unsigned int max_req_size; /* maximum number of bytes in one req */
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unsigned int max_blk_size; /* maximum size of one mmc block */
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unsigned int max_blk_count; /* maximum number of blocks in one req */
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unsigned int max_busy_timeout; /* max busy timeout in ms */
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/* private data */
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spinlock_t lock; /* lock for claim and bus ops */
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struct mmc_ios ios; /* current io bus settings */
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/* group bitfields together to minimize padding */
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unsigned int use_spi_crc:1;
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unsigned int claimed:1; /* host exclusively claimed */
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unsigned int bus_dead:1; /* bus has been released */
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unsigned int can_retune:1; /* re-tuning can be used */
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unsigned int doing_retune:1; /* re-tuning in progress */
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unsigned int retune_now:1; /* do re-tuning at next req */
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unsigned int retune_paused:1; /* re-tuning is temporarily disabled */
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unsigned int use_blk_mq:1; /* use blk-mq */
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unsigned int retune_crc_disable:1; /* don't trigger retune upon crc */
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int rescan_disable; /* disable card detection */
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int rescan_entered; /* used with nonremovable devices */
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int need_retune; /* re-tuning is needed */
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int hold_retune; /* hold off re-tuning */
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unsigned int retune_period; /* re-tuning period in secs */
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struct timer_list retune_timer; /* for periodic re-tuning */
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bool trigger_card_event; /* card_event necessary */
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struct mmc_card *card; /* device attached to this host */
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wait_queue_head_t wq;
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struct mmc_ctx *claimer; /* context that has host claimed */
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int claim_cnt; /* "claim" nesting count */
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struct mmc_ctx default_ctx; /* default context */
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struct delayed_work detect;
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int detect_change; /* card detect flag */
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struct mmc_slot slot;
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const struct mmc_bus_ops *bus_ops; /* current bus driver */
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unsigned int bus_refs; /* reference counter */
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unsigned int sdio_irqs;
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struct task_struct *sdio_irq_thread;
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struct delayed_work sdio_irq_work;
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bool sdio_irq_pending;
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atomic_t sdio_irq_thread_abort;
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mmc_pm_flag_t pm_flags; /* requested pm features */
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struct led_trigger *led; /* activity led */
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#ifdef CONFIG_REGULATOR
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bool regulator_enabled; /* regulator state */
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#endif
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struct mmc_supply supply;
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struct dentry *debugfs_root;
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/* Ongoing data transfer that allows commands during transfer */
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struct mmc_request *ongoing_mrq;
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#ifdef CONFIG_FAIL_MMC_REQUEST
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struct fault_attr fail_mmc_request;
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#endif
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unsigned int actual_clock; /* Actual HC clock rate */
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unsigned int slotno; /* used for sdio acpi binding */
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int dsr_req; /* DSR value is valid */
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u32 dsr; /* optional driver stage (DSR) value */
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/* Command Queue Engine (CQE) support */
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const struct mmc_cqe_ops *cqe_ops;
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void *cqe_private;
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int cqe_qdepth;
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bool cqe_enabled;
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bool cqe_on;
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unsigned long private[0] ____cacheline_aligned;
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};
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struct device_node;
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struct mmc_host *mmc_alloc_host(int extra, struct device *);
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int mmc_add_host(struct mmc_host *);
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void mmc_remove_host(struct mmc_host *);
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void mmc_free_host(struct mmc_host *);
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int mmc_of_parse(struct mmc_host *host);
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int mmc_of_parse_voltage(struct device_node *np, u32 *mask);
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static inline void *mmc_priv(struct mmc_host *host)
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{
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return (void *)host->private;
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}
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static inline struct mmc_host *mmc_from_priv(void *priv)
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{
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return container_of(priv, struct mmc_host, private);
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}
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#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
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#define mmc_dev(x) ((x)->parent)
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#define mmc_classdev(x) (&(x)->class_dev)
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#define mmc_hostname(x) (dev_name(&(x)->class_dev))
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void mmc_detect_change(struct mmc_host *, unsigned long delay);
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void mmc_request_done(struct mmc_host *, struct mmc_request *);
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void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq);
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void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq);
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static inline void mmc_signal_sdio_irq(struct mmc_host *host)
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{
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host->ops->enable_sdio_irq(host, 0);
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host->sdio_irq_pending = true;
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if (host->sdio_irq_thread)
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wake_up_process(host->sdio_irq_thread);
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}
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void sdio_signal_irq(struct mmc_host *host);
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#ifdef CONFIG_REGULATOR
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int mmc_regulator_set_ocr(struct mmc_host *mmc,
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struct regulator *supply,
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unsigned short vdd_bit);
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int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
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#else
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static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
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struct regulator *supply,
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unsigned short vdd_bit)
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{
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return 0;
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}
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static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc,
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struct mmc_ios *ios)
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{
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return -EINVAL;
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}
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#endif
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int mmc_regulator_get_supply(struct mmc_host *mmc);
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static inline int mmc_card_is_removable(struct mmc_host *host)
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{
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return !(host->caps & MMC_CAP_NONREMOVABLE);
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}
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static inline int mmc_card_keep_power(struct mmc_host *host)
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{
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return host->pm_flags & MMC_PM_KEEP_POWER;
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}
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static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
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{
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return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
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}
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/* TODO: Move to private header */
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static inline int mmc_card_hs(struct mmc_card *card)
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{
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return card->host->ios.timing == MMC_TIMING_SD_HS ||
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card->host->ios.timing == MMC_TIMING_MMC_HS;
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}
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|
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/* TODO: Move to private header */
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static inline int mmc_card_uhs(struct mmc_card *card)
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{
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return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 &&
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card->host->ios.timing <= MMC_TIMING_UHS_DDR50;
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}
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void mmc_retune_timer_stop(struct mmc_host *host);
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static inline void mmc_retune_needed(struct mmc_host *host)
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|
{
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if (host->can_retune)
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host->need_retune = 1;
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}
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static inline bool mmc_can_retune(struct mmc_host *host)
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{
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return host->can_retune == 1;
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}
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static inline bool mmc_doing_retune(struct mmc_host *host)
|
|
{
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return host->doing_retune == 1;
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}
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static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
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|
{
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return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
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}
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int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
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int mmc_abort_tuning(struct mmc_host *host, u32 opcode);
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#endif /* LINUX_MMC_HOST_H */
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