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OpenCloudOS-Kernel/drivers/mmc/host/sdhci-esdhc.h

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mmc: sdhci-of-esdhc: factor out common stuff Put everything which can be shared between the OF and platform version of this driver into a local .h file. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Tested-by: Eric Bénard <eric@eukrea.com> [cjb: fix compile error: sdhci-esdhc.c->sdhci-esdhc.h] Signed-off-by: Chris Ball <cjb@laptop.org>
2010-10-15 18:21:03 +08:00
/*
* Freescale eSDHC controller driver generics for OF and pltfm.
*
* Copyright (c) 2007 Freescale Semiconductor, Inc.
* Copyright (c) 2009 MontaVista Software, Inc.
* Copyright (c) 2010 Pengutronix e.K.
* Author: Wolfram Sang <w.sang@pengutronix.de>
*
* 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.
*/
#ifndef _DRIVERS_MMC_SDHCI_ESDHC_H
#define _DRIVERS_MMC_SDHCI_ESDHC_H
/*
* Ops and quirks for the Freescale eSDHC controller.
*/
#define ESDHC_DEFAULT_QUIRKS (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
SDHCI_QUIRK_NO_BUSY_IRQ | \
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
mmc: sdhci-esdhc: add default quirk SDHCI_QUIRK_NO_HISPD_BIT eSDHC supports high speed mode, but has no enabling bit for it. Add this quirk to avoid writing to eSDHC_PROCTL[DTW] by mistake. Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-07-10 11:42:37 +08:00
SDHCI_QUIRK_PIO_NEEDS_DELAY | \
SDHCI_QUIRK_NO_HISPD_BIT)
mmc: sdhci-of-esdhc: factor out common stuff Put everything which can be shared between the OF and platform version of this driver into a local .h file. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Tested-by: Eric Bénard <eric@eukrea.com> [cjb: fix compile error: sdhci-esdhc.c->sdhci-esdhc.h] Signed-off-by: Chris Ball <cjb@laptop.org>
2010-10-15 18:21:03 +08:00
/* pltfm-specific */
#define ESDHC_HOST_CONTROL_LE 0x20
mmc: esdhc: Add support for 8-bit bus width and non-removable card This patch adds support of connecting an MMC media using an 8-bit bus width connection to Freescale's P2020 H/W SDHC controller. During the probe function, the generic function mmc_of_parse is called to detect whether the controller is configured with 8-bit bus width. Also, the generic function detects if the non-removable property is set in the device tree. The function esdhc_pltfm_bus_width was added because the bus width configuration is platform specific. Signed-off-by: Oded Gabbay <ogabbay@advaoptical.com> Reviewed-by: Anton Vorontsov <anton@enomsg.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-06-28 00:00:05 +08:00
/*
mmc: sdhci-esdhc: clean up register definitions The eSDHC register definitions in header file were messy and confusing. This patch is to clean up these definitions. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-12-26 17:46:29 +08:00
* eSDHC register definition
mmc: esdhc: Add support for 8-bit bus width and non-removable card This patch adds support of connecting an MMC media using an 8-bit bus width connection to Freescale's P2020 H/W SDHC controller. During the probe function, the generic function mmc_of_parse is called to detect whether the controller is configured with 8-bit bus width. Also, the generic function detects if the non-removable property is set in the device tree. The function esdhc_pltfm_bus_width was added because the bus width configuration is platform specific. Signed-off-by: Oded Gabbay <ogabbay@advaoptical.com> Reviewed-by: Anton Vorontsov <anton@enomsg.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-06-28 00:00:05 +08:00
*/
mmc: sdhci-of-esdhc: factor out common stuff Put everything which can be shared between the OF and platform version of this driver into a local .h file. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Tested-by: Eric Bénard <eric@eukrea.com> [cjb: fix compile error: sdhci-esdhc.c->sdhci-esdhc.h] Signed-off-by: Chris Ball <cjb@laptop.org>
2010-10-15 18:21:03 +08:00
mmc: sdhci-of-esdhc: avoid clock glitch when frequency is changing The eSDHC_PRSSTAT[SDSTB] bit indicates whether the internal card clock is stable. This bit is for the host driver to poll clock status when changing the clock frequency. It is recommended to clear eSDHC_SYSCTL[SDCLKEN] to remove glitch on the card clock when the frequency is changing. This patch is to disable SDCLKEN bit before changing frequency and enable it after SDSTB bit is set. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-12-26 17:46:30 +08:00
/* Present State Register */
#define ESDHC_PRSSTAT 0x24
#define ESDHC_CLOCK_STABLE 0x00000008
mmc: sdhci-esdhc: clean up register definitions The eSDHC register definitions in header file were messy and confusing. This patch is to clean up these definitions. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-12-26 17:46:29 +08:00
/* Protocol Control Register */
#define ESDHC_PROCTL 0x28
#define ESDHC_CTRL_4BITBUS (0x1 << 1)
#define ESDHC_CTRL_8BITBUS (0x2 << 1)
#define ESDHC_CTRL_BUSWIDTH_MASK (0x3 << 1)
#define ESDHC_HOST_CONTROL_RES 0x01
/* System Control Register */
#define ESDHC_SYSTEM_CONTROL 0x2c
#define ESDHC_CLOCK_MASK 0x0000fff0
#define ESDHC_PREDIV_SHIFT 8
#define ESDHC_DIVIDER_SHIFT 4
mmc: sdhci-of-esdhc: avoid clock glitch when frequency is changing The eSDHC_PRSSTAT[SDSTB] bit indicates whether the internal card clock is stable. This bit is for the host driver to poll clock status when changing the clock frequency. It is recommended to clear eSDHC_SYSCTL[SDCLKEN] to remove glitch on the card clock when the frequency is changing. This patch is to disable SDCLKEN bit before changing frequency and enable it after SDSTB bit is set. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-12-26 17:46:30 +08:00
#define ESDHC_CLOCK_SDCLKEN 0x00000008
mmc: sdhci-esdhc: clean up register definitions The eSDHC register definitions in header file were messy and confusing. This patch is to clean up these definitions. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-12-26 17:46:29 +08:00
#define ESDHC_CLOCK_PEREN 0x00000004
#define ESDHC_CLOCK_HCKEN 0x00000002
#define ESDHC_CLOCK_IPGEN 0x00000001
/* Control Register for DMA transfer */
#define ESDHC_DMA_SYSCTL 0x40c
mmc: sdhci-of-esdhc: add peripheral clock support eSDHC could select peripheral clock or platform clock as clock source by the PCS bit of eSDHC Control Register, and this bit couldn't be reset by software reset for all. In default, the platform clock is used. But we have to use peripheral clock since it has a higher frequency to support eMMC HS200 mode and SD UHS-I mode. This patch is to add peripheral clock support and use it instead of platform clock if it's declared in eSDHC dts node. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-04-20 16:14:40 +08:00
#define ESDHC_PERIPHERAL_CLK_SEL 0x00080000
mmc: sdhci-esdhc: clean up register definitions The eSDHC register definitions in header file were messy and confusing. This patch is to clean up these definitions. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-12-26 17:46:29 +08:00
#define ESDHC_DMA_SNOOP 0x00000040
mmc: sdhci-of-esdhc: factor out common stuff Put everything which can be shared between the OF and platform version of this driver into a local .h file. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Tested-by: Eric Bénard <eric@eukrea.com> [cjb: fix compile error: sdhci-esdhc.c->sdhci-esdhc.h] Signed-off-by: Chris Ball <cjb@laptop.org>
2010-10-15 18:21:03 +08:00
#endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */