[ARM] S3C6410: Add helper for setting SDHCI device information
Add the necessary helper functions for setting up the SDHCI device information. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks
@@ -13,8 +13,10 @@
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/mmc/host.h>
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#include <mach/map.h>
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#include <plat/sdhci.h>
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#include <plat/devs.h>
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#include <plat/cpu.h>
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@@ -35,13 +37,32 @@ static struct resource s3c_hsmmc_resource[] = {
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static u64 s3c_device_hsmmc_dmamask = 0xffffffffUL;
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struct platform_device s3c_device_hsmmc0 = {
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.name = "s3c-sdhci",
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.id = 0,
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.num_resources = ARRAY_SIZE(s3c_hsmmc_resource),
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.resource = s3c_hsmmc_resource,
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.dev = {
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.dma_mask = &s3c_device_hsmmc_dmamask,
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.coherent_dma_mask = 0xffffffffUL
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}
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struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata = {
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.max_width = 4,
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.host_caps = (MMC_CAP_4_BIT_DATA |
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MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED),
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};
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struct platform_device s3c_device_hsmmc0 = {
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.name = "s3c-sdhci",
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.id = 0,
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.num_resources = ARRAY_SIZE(s3c_hsmmc_resource),
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.resource = s3c_hsmmc_resource,
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.dev = {
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.dma_mask = &s3c_device_hsmmc_dmamask,
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.coherent_dma_mask = 0xffffffffUL,
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.platform_data = &s3c_hsmmc0_def_platdata,
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},
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};
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void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd)
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{
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struct s3c_sdhci_platdata *set = &s3c_hsmmc0_def_platdata;
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set->max_width = pd->max_width;
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if (pd->cfg_gpio)
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set->cfg_gpio = pd->cfg_gpio;
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if (pd->cfg_card)
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set->cfg_card = pd->cfg_card;
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}
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87
arch/arm/plat-s3c/include/plat/sdhci.h
Normal file
87
arch/arm/plat-s3c/include/plat/sdhci.h
Normal file
@@ -0,0 +1,87 @@
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/* linux/arch/arm/plat-s3c/include/plat/sdhci.h
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*
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* Copyright 2008 Openmoko, Inc.
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* Copyright 2008 Simtec Electronics
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* http://armlinux.simtec.co.uk/
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* Ben Dooks <ben@simtec.co.uk>
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*
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* S3C Platform - SDHCI (HSMMC) platform data definitions
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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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#ifndef __PLAT_S3C_SDHCI_H
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#define __PLAT_S3C_SDHCI_H __FILE__
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struct platform_device;
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struct mmc_host;
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struct mmc_card;
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struct mmc_ios;
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/**
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* struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
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* @max_width: The maximum number of data bits supported.
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* @host_caps: Standard MMC host capabilities bit field.
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* @cfg_gpio: Configure the GPIO for a specific card bit-width
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* @cfg_card: Configure the interface for a specific card and speed. This
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* is necessary the controllers and/or GPIO blocks require the
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* changing of driver-strength and other controls dependant on
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* the card and speed of operation.
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*
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* Initialisation data specific to either the machine or the platform
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* for the device driver to use or call-back when configuring gpio or
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* card speed information.
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*/
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struct s3c_sdhci_platdata {
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unsigned int max_width;
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unsigned int host_caps;
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char **clocks; /* set of clock sources */
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void (*cfg_gpio)(struct platform_device *dev, int width);
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void (*cfg_card)(struct platform_device *dev,
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void __iomem *regbase,
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struct mmc_ios *ios,
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struct mmc_card *card);
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};
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/**
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* s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device.
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* @pd: Platform data to register to device.
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*
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* Register the given platform data for use withe S3C SDHCI device.
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* The call will copy the platform data, so the board definitions can
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* make the structure itself __initdata.
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*/
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extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd);
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/* Default platform data, exported so that per-cpu initialisation can
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* set the correct one when there are more than one cpu type selected.
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*/
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extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platata;
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/* Helper function availablity */
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#ifdef CONFIG_S3C6410_SETUP_SDHCI
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extern char *s3c6410_hsmmc_clksrcs[4];
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extern void s3c6410_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
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extern void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
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void __iomem *r,
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struct mmc_ios *ios,
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struct mmc_card *card);
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static inline void s3c6410_default_sdhci0(void)
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{
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s3c_hsmmc0_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
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s3c_hsmmc0_def_platdata.cfg_gpio = s3c6410_setup_sdhci0_cfg_gpio;
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s3c_hsmmc0_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
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}
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#else
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static inline void s3c6410_default_sdhci0(void) { }
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#endif /* CONFIG_S3C6410_SETUP_SDHCI */
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#endif /* __PLAT_S3C_SDHCI_H */
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