[U-Boot] [PATCH 4/4] arm:goni: Add support for USB mass storage

[Lukasz Majewski]

From: Arkadiusz Wlodarczyk <a.wlodarczyk at samsung.com>

This commit enables support for USB mass storage composite function.
It defines platform code and enables it at config file.

Signed-off-by: Arkadiusz Wlodarczyk <a.wlodarczyk at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Tested-by: Arkadiusz Wlodarczyk <a.wlodarczyk at samsung.com>
Cc: Minkyu Kang <mk7.kang at samsung.com>
---
 board/samsung/goni/goni.c  |   68 ++++++++++++++++++++++++++++++++++++++++++++
 include/configs/s5p_goni.h |    5 ++++
 2 files changed, 73 insertions(+)

diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
index 3c53106..a09daca 100644
--- a/board/samsung/goni/goni.c
+++ b/board/samsung/goni/goni.c
@@ -29,6 +29,7 @@
 #include <usb/s3c_udc.h>
 #include <asm/arch/cpu.h>
 #include <power/max8998_pmic.h>
+#include <usb_mass_storage.h>
 DECLARE_GLOBAL_DATA_PTR;
 
 static struct s5pc110_gpio *s5pc110_gpio;
@@ -163,3 +164,70 @@ void board_usb_init(void)
 }
 
 #endif
+
+#ifdef CONFIG_USB_GADGET_MASS_STORAGE
+static int ums_read_sector(struct ums_device *ums_dev,
+				ulong start, lbaint_t blkcnt, void *buf)
+{
+	if (ums_dev->mmc->block_dev.block_read(ums_dev->dev_num,
+			start + ums_dev->offset, blkcnt, buf) != blkcnt)
+		return -1;
+
+	return 0;
+}
+
+static int ums_write_sector(struct ums_device *ums_dev,
+				ulong start, lbaint_t blkcnt, const void *buf)
+{
+	if (ums_dev->mmc->block_dev.block_write(ums_dev->dev_num,
+			start + ums_dev->offset, blkcnt, buf) != blkcnt)
+			return -1;
+
+	return 0;
+}
+
+static void ums_get_capacity(struct ums_device *ums_dev,
+					long long int *capacity)
+{
+	long long int tmp_capacity;
+
+	tmp_capacity = (long long int) ((ums_dev->offset + ums_dev->part_size)
+					* SECTOR_SIZE);
+	*capacity = ums_dev->mmc->capacity - tmp_capacity;
+}
+
+static struct ums_board_info ums_board = {
+	.read_sector = ums_read_sector,
+	.write_sector = ums_write_sector,
+	.get_capacity = ums_get_capacity,
+	.name = "GONI UMS disk",
+	.ums_dev = {
+		.mmc = NULL,
+		.dev_num = 0,
+		.offset = 0,
+		.part_size = 0.
+	},
+};
+
+struct ums_board_info *board_ums_init(unsigned int dev_num, unsigned int offset,
+					unsigned int part_size)
+{
+	struct mmc *mmc;
+
+	mmc = find_mmc_device(dev_num);
+	/* mmc initialization is necessary prior to the ums command usage
+	 * due to fact that on goni target environment is read from oneNand
+	 * memory, so the mmc remains uninitialized whenu-boot prompt appears
+	 * */
+	if (!mmc || mmc_init(mmc))
+		return NULL;
+
+	ums_board.ums_dev.mmc = mmc;
+	ums_board.ums_dev.dev_num = dev_num;
+	ums_board.ums_dev.offset = offset;
+	ums_board.ums_dev.part_size = part_size;
+
+	return &ums_board;
+}
+
+#endif
diff --git a/include/configs/s5p_goni.h b/include/configs/s5p_goni.h
index e8f2639..1cfbb88 100644
--- a/include/configs/s5p_goni.h
+++ b/include/configs/s5p_goni.h
@@ -269,4 +269,9 @@
 #define CONFIG_USB_GADGET_DUALSPEED
 #define CONFIG_USB_GADGET_VBUS_DRAW 2
 
+#define CONFIG_CMD_USB_MASS_STORAGE
+#if defined(CONFIG_CMD_USB_MASS_STORAGE)
+#define CONFIG_USB_GADGET_MASS_STORAGE
+#endif
+
 #endif	/* __CONFIG_H */
-- 
1.7.10.4