arm:trats: Use new ums command

This patch enables new "ums" command on Trats board

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>

board/samsung/trats/trats.c

@@ -42,6 +42,7 @@
 #include <power/max8997_muic.h>
 #include <power/battery.h>
 #include <power/max17042_fg.h>
+#include <usb_mass_storage.h>
 
 #include "setup.h"
 
@@ -791,3 +792,65 @@ void init_panel_info(vidinfo_t *vid)
 
 	setenv("lcdinfo", "lcd=s6e8ax0");
 }
+
+#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 = "TRATS 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);
+	if (!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

include/configs/trats.h

@@ -316,4 +316,9 @@
 #define CONFIG_VIDEO_BMP_GZIP
 #define CONFIG_SYS_VIDEO_LOGO_MAX_SIZE ((500 * 120 * 4) + (1 << 12))
 
+#define CONFIG_CMD_USB_MASS_STORAGE
+#if defined(CONFIG_CMD_USB_MASS_STORAGE)
+#define CONFIG_USB_GADGET_MASS_STORAGE
+#endif
+
 #endif	/* __CONFIG_H */