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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b7a5646fa5
board-rx51 has no card detect pin in the mmc slot, but can detect that the (cell-phone) cover has been removed and the card is accessible. The semantics between cover/card detect differ, the gpio on the slot informs you after the card has been removed, cover removal does not necessarily mean that the card has been removed. This means different code paths are necessary. To complete this we also want different fields in the platform data for cover and card detect. This separation is not pushed all the way down into struct omap2_hsmmc_info which is used to initialize the platform data. If we did that we had to go over all board files and set the new gpio_cod pin to -EINVAL. If we forget one board or some out-of-tree archicture forgets that the default '0' is used which is a valid pin number. Signed-off-by: Andreas Fenkart <afenkart@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
/*
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* MMC definitions for OMAP2
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*
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* Copyright (C) 2006 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/*
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* struct omap_hsmmc_dev_attr.flags possibilities
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*
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* OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can
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* operate with either 1.8Vdc or 3.0Vdc card voltages; this flag
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* should be set if this is the case. See for example Section 22.5.3
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* "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia
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* Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R).
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*
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* OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers
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* don't work correctly on some MMC controller instances on some
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* OMAP3 SoCs; this flag should be set if this is the case. See
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* for example Advisory 2.1.1.128 "MMC: Multiple Block Read
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* Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
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* Revision F (October 2010) (SPRZ278F).
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*/
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#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT BIT(0)
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#define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ BIT(1)
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#define OMAP_HSMMC_SWAKEUP_MISSING BIT(2)
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struct omap_hsmmc_dev_attr {
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u8 flags;
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};
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struct mmc_card;
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struct omap_hsmmc_platform_data {
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/* back-link to device */
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struct device *dev;
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/* set if your board has components or wiring that limits the
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* maximum frequency on the MMC bus */
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unsigned int max_freq;
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/* Integrating attributes from the omap_hwmod layer */
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u8 controller_flags;
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/* Register offset deviation */
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u16 reg_offset;
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/*
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* 4/8 wires and any additional host capabilities
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* need to OR'd all capabilities (ref. linux/mmc/host.h)
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*/
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u32 caps; /* Used for the MMC driver on 2430 and later */
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u32 pm_caps; /* PM capabilities of the mmc */
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/* use the internal clock */
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unsigned internal_clock:1;
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/* nonremovable e.g. eMMC */
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unsigned nonremovable:1;
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/* eMMC does not handle power off when not in sleep state */
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unsigned no_regulator_off_init:1;
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/* we can put the features above into this variable */
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#define HSMMC_HAS_PBIAS (1 << 0)
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#define HSMMC_HAS_UPDATED_RESET (1 << 1)
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#define HSMMC_HAS_HSPE_SUPPORT (1 << 2)
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unsigned features;
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int gpio_cd; /* gpio (card detect) */
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int gpio_cod; /* gpio (cover detect) */
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int gpio_wp; /* gpio (write protect) */
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int (*set_power)(struct device *dev, int power_on, int vdd);
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void (*remux)(struct device *dev, int power_on);
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/* Call back before enabling / disabling regulators */
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void (*before_set_reg)(struct device *dev, int power_on, int vdd);
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/* Call back after enabling / disabling regulators */
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void (*after_set_reg)(struct device *dev, int power_on, int vdd);
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/* if we have special card, init it using this callback */
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void (*init_card)(struct mmc_card *card);
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const char *name;
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u32 ocr_mask;
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};
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