[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>
diff --git a/arch/arm/plat-s3c/dev-hsmmc.c b/arch/arm/plat-s3c/dev-hsmmc.c
index 5a5ef74..4c05b39 100644
--- a/arch/arm/plat-s3c/dev-hsmmc.c
+++ b/arch/arm/plat-s3c/dev-hsmmc.c
@@ -13,8 +13,10 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
+#include <linux/mmc/host.h>
#include <mach/map.h>
+#include <plat/sdhci.h>
#include <plat/devs.h>
#include <plat/cpu.h>
@@ -35,13 +37,32 @@
static u64 s3c_device_hsmmc_dmamask = 0xffffffffUL;
-struct platform_device s3c_device_hsmmc0 = {
- .name = "s3c-sdhci",
- .id = 0,
- .num_resources = ARRAY_SIZE(s3c_hsmmc_resource),
- .resource = s3c_hsmmc_resource,
- .dev = {
- .dma_mask = &s3c_device_hsmmc_dmamask,
- .coherent_dma_mask = 0xffffffffUL
- }
+struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata = {
+ .max_width = 4,
+ .host_caps = (MMC_CAP_4_BIT_DATA |
+ MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED),
};
+
+struct platform_device s3c_device_hsmmc0 = {
+ .name = "s3c-sdhci",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(s3c_hsmmc_resource),
+ .resource = s3c_hsmmc_resource,
+ .dev = {
+ .dma_mask = &s3c_device_hsmmc_dmamask,
+ .coherent_dma_mask = 0xffffffffUL,
+ .platform_data = &s3c_hsmmc0_def_platdata,
+ },
+};
+
+void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd)
+{
+ struct s3c_sdhci_platdata *set = &s3c_hsmmc0_def_platdata;
+
+ set->max_width = pd->max_width;
+
+ if (pd->cfg_gpio)
+ set->cfg_gpio = pd->cfg_gpio;
+ if (pd->cfg_card)
+ set->cfg_card = pd->cfg_card;
+}
diff --git a/arch/arm/plat-s3c/include/plat/sdhci.h b/arch/arm/plat-s3c/include/plat/sdhci.h
new file mode 100644
index 0000000..c999912
--- /dev/null
+++ b/arch/arm/plat-s3c/include/plat/sdhci.h
@@ -0,0 +1,87 @@
+/* linux/arch/arm/plat-s3c/include/plat/sdhci.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C Platform - SDHCI (HSMMC) platform data definitions
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __PLAT_S3C_SDHCI_H
+#define __PLAT_S3C_SDHCI_H __FILE__
+
+struct platform_device;
+struct mmc_host;
+struct mmc_card;
+struct mmc_ios;
+
+/**
+ * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
+ * @max_width: The maximum number of data bits supported.
+ * @host_caps: Standard MMC host capabilities bit field.
+ * @cfg_gpio: Configure the GPIO for a specific card bit-width
+ * @cfg_card: Configure the interface for a specific card and speed. This
+ * is necessary the controllers and/or GPIO blocks require the
+ * changing of driver-strength and other controls dependant on
+ * the card and speed of operation.
+ *
+ * Initialisation data specific to either the machine or the platform
+ * for the device driver to use or call-back when configuring gpio or
+ * card speed information.
+*/
+struct s3c_sdhci_platdata {
+ unsigned int max_width;
+ unsigned int host_caps;
+
+ char **clocks; /* set of clock sources */
+
+ void (*cfg_gpio)(struct platform_device *dev, int width);
+ void (*cfg_card)(struct platform_device *dev,
+ void __iomem *regbase,
+ struct mmc_ios *ios,
+ struct mmc_card *card);
+};
+
+/**
+ * s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device.
+ * @pd: Platform data to register to device.
+ *
+ * Register the given platform data for use withe S3C SDHCI device.
+ * The call will copy the platform data, so the board definitions can
+ * make the structure itself __initdata.
+ */
+extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd);
+
+/* Default platform data, exported so that per-cpu initialisation can
+ * set the correct one when there are more than one cpu type selected.
+*/
+
+extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platata;
+
+/* Helper function availablity */
+
+#ifdef CONFIG_S3C6410_SETUP_SDHCI
+extern char *s3c6410_hsmmc_clksrcs[4];
+
+extern void s3c6410_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
+extern void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
+ void __iomem *r,
+ struct mmc_ios *ios,
+ struct mmc_card *card);
+
+static inline void s3c6410_default_sdhci0(void)
+{
+ s3c_hsmmc0_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
+ s3c_hsmmc0_def_platdata.cfg_gpio = s3c6410_setup_sdhci0_cfg_gpio;
+ s3c_hsmmc0_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
+}
+#else
+static inline void s3c6410_default_sdhci0(void) { }
+#endif /* CONFIG_S3C6410_SETUP_SDHCI */
+
+#endif /* __PLAT_S3C_SDHCI_H */