[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>

2 files changed, 116 insertions, 8 deletions

diff --git a/arch/arm/plat-s3c/dev-hsmmc.c b/arch/arm/plat-s3c/dev-hsmmc.c
index 5a5ef74ebde3..4c05b39810e2 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 struct resource s3c_hsmmc_resource[] = {
 
 static u64 s3c_device_hsmmc_dmamask = 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
-        }
+        .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 000000000000..c9999121b4bb
--- /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 */