ARM: SAMSUNG: Add Compact Flash device support for Samsung SoCs

Following has been added:
	- Common CF Platform device definition
	- Platform data strucure definition
	- CF controller register definitions

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

7 files changed, 171 insertions, 0 deletions

diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 2753fb3e4f73..12c647cc46ea 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -216,6 +216,11 @@ config SAMSUNG_DEV_ADC
         help
           Compile in platform device definition for ADC controller
 
+config SAMSUNG_DEV_IDE
+        bool
+        help
+          Compile in platform device definitions for IDE
+
 config S3C64XX_DEV_SPI
         bool
         help
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 228c2add1e2e..e7a975511b7c 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -49,6 +49,7 @@ obj-$(CONFIG_S3C_DEV_ONENAND)	+= dev-onenand.o
 obj-$(CONFIG_S3C_DEV_RTC)       += dev-rtc.o
 
 obj-$(CONFIG_SAMSUNG_DEV_ADC)   += dev-adc.o
+obj-$(CONFIG_SAMSUNG_DEV_IDE)   += dev-ide.o
 obj-$(CONFIG_SAMSUNG_DEV_TS)    += dev-ts.o
 
 # DMA support
diff --git a/arch/arm/plat-samsung/dev-ide.c b/arch/arm/plat-samsung/dev-ide.c
new file mode 100644
index 000000000000..b497982795a7
--- /dev/null
+++ b/arch/arm/plat-samsung/dev-ide.c
@@ -0,0 +1,44 @@
+/* linux/arch/arm/plat-samsung/dev-ide.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * Samsung CF-ATA device definition.
+ *
+ * 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.
+*/
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#include <mach/map.h>
+#include <plat/ata.h>
+#include <plat/devs.h>
+
+static struct resource s3c_cfcon_resource[] = {
+        [0] = {
+                .start  = SAMSUNG_PA_CFCON,
+                .end    = SAMSUNG_PA_CFCON + SZ_16K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = IRQ_CFCON,
+                .end    = IRQ_CFCON,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device s3c_device_cfcon = {
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(s3c_cfcon_resource),
+        .resource       = s3c_cfcon_resource,
+};
+
+void s3c_ide_set_platdata(struct s3c_ide_platdata *pdata)
+{
+        s3c_set_platdata(pdata, sizeof(struct s3c_ide_platdata),
+                         &s3c_device_cfcon);
+}
diff --git a/arch/arm/plat-samsung/include/plat/ata-core.h b/arch/arm/plat-samsung/include/plat/ata-core.h
new file mode 100644
index 000000000000..f5a4ec7141b1
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/ata-core.h
@@ -0,0 +1,28 @@
+/* linux/arch/arm/plat-samsung/include/plat/ata-core.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * Samsung CF-ATA Controller core functions
+ *
+ * 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 __ASM_PLAT_ATA_CORE_H
+#define __ASM_PLAT_ATA_CORE_H __FILE__
+
+/* These functions are only for use with the core support code, such as
+ * the cpu specific initialisation code
+*/
+
+/* re-define device name depending on support. */
+static inline void s3c_cfcon_setname(char *name)
+{
+#ifdef CONFIG_SAMSUNG_DEV_IDE
+        s3c_device_cfcon.name = name;
+#endif
+}
+
+#endif /* __ASM_PLAT_ATA_CORE_H */
diff --git a/arch/arm/plat-samsung/include/plat/ata.h b/arch/arm/plat-samsung/include/plat/ata.h
new file mode 100644
index 000000000000..2a3855a8372a
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/ata.h
@@ -0,0 +1,36 @@
+/* linux/arch/arm/plat-samsung/include/plat/ata.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * Samsung CF-ATA platform_device info
+ *
+ * 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 __ASM_PLAT_ATA_H
+#define __ASM_PLAT_ATA_H __FILE__
+
+/**
+ * struct s3c_ide_platdata - S3C IDE driver platform data.
+ * @setup_gpio: Setup the external GPIO pins to the right state for data
+ * transfer in true-ide mode.
+ */
+struct s3c_ide_platdata {
+        void (*setup_gpio)(void);
+};
+
+/*
+ * s3c_ide_set_platdata() - Setup the platform specifc data for IDE driver.
+ * @pdata: Platform data for IDE driver.
+ */
+extern void s3c_ide_set_platdata(struct s3c_ide_platdata *pdata);
+
+/* architecture-specific IDE configuration */
+extern void s3c64xx_ide_setup_gpio(void);
+extern void s5pc100_ide_setup_gpio(void);
+extern void s5pv210_ide_setup_gpio(void);
+
+#endif /*__ASM_PLAT_ATA_H */
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 676099999de4..4a661304e27f 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -54,6 +54,7 @@ extern struct platform_device s3c_device_hwmon;
 extern struct platform_device s3c_device_hsmmc0;
 extern struct platform_device s3c_device_hsmmc1;
 extern struct platform_device s3c_device_hsmmc2;
+extern struct platform_device s3c_device_cfcon;
 
 extern struct platform_device s3c_device_spi0;
 extern struct platform_device s3c_device_spi1;
diff --git a/arch/arm/plat-samsung/include/plat/regs-ata.h b/arch/arm/plat-samsung/include/plat/regs-ata.h
new file mode 100644
index 000000000000..f5df92fdae26
--- /dev/null
+++ b/arch/arm/plat-samsung/include/plat/regs-ata.h
@@ -0,0 +1,56 @@
+/* linux/arch/arm/plat-samsung/include/plat/regs-ata.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * Samsung CF-ATA register 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 __ASM_PLAT_REGS_ATA_H
+#define __ASM_PLAT_REGS_ATA_H __FILE__
+
+#define S3C_CFATA_REG(x)        (x)
+
+#define S3C_CFATA_MUX           S3C_CFATA_REG(0x0)
+
+#define S3C_ATA_CTRL            S3C_CFATA_REG(0x0)
+#define S3C_ATA_STATUS          S3C_CFATA_REG(0x4)
+#define S3C_ATA_CMD             S3C_CFATA_REG(0x8)
+#define S3C_ATA_SWRST           S3C_CFATA_REG(0xc)
+#define S3C_ATA_IRQ             S3C_CFATA_REG(0x10)
+#define S3C_ATA_IRQ_MSK         S3C_CFATA_REG(0x14)
+#define S3C_ATA_CFG             S3C_CFATA_REG(0x18)
+
+#define S3C_ATA_MDMA_TIME       S3C_CFATA_REG(0x28)
+#define S3C_ATA_PIO_TIME        S3C_CFATA_REG(0x2c)
+#define S3C_ATA_UDMA_TIME       S3C_CFATA_REG(0x30)
+#define S3C_ATA_XFR_NUM         S3C_CFATA_REG(0x34)
+#define S3C_ATA_XFR_CNT         S3C_CFATA_REG(0x38)
+#define S3C_ATA_TBUF_START      S3C_CFATA_REG(0x3c)
+#define S3C_ATA_TBUF_SIZE       S3C_CFATA_REG(0x40)
+#define S3C_ATA_SBUF_START      S3C_CFATA_REG(0x44)
+#define S3C_ATA_SBUF_SIZE       S3C_CFATA_REG(0x48)
+#define S3C_ATA_CADR_TBUF       S3C_CFATA_REG(0x4c)
+#define S3C_ATA_CADR_SBUF       S3C_CFATA_REG(0x50)
+#define S3C_ATA_PIO_DTR         S3C_CFATA_REG(0x54)
+#define S3C_ATA_PIO_FED         S3C_CFATA_REG(0x58)
+#define S3C_ATA_PIO_SCR         S3C_CFATA_REG(0x5c)
+#define S3C_ATA_PIO_LLR         S3C_CFATA_REG(0x60)
+#define S3C_ATA_PIO_LMR         S3C_CFATA_REG(0x64)
+#define S3C_ATA_PIO_LHR         S3C_CFATA_REG(0x68)
+#define S3C_ATA_PIO_DVR         S3C_CFATA_REG(0x6c)
+#define S3C_ATA_PIO_CSD         S3C_CFATA_REG(0x70)
+#define S3C_ATA_PIO_DAD         S3C_CFATA_REG(0x74)
+#define S3C_ATA_PIO_READY       S3C_CFATA_REG(0x78)
+#define S3C_ATA_PIO_RDATA       S3C_CFATA_REG(0x7c)
+
+#define S3C_CFATA_MUX_TRUEIDE   0x01
+
+#define S3C_ATA_CFG_SWAP        0x40
+#define S3C_ATA_CFG_IORDYEN     0x02
+
+#endif /* __ASM_PLAT_REGS_ATA_H */