ARM: uniphier: move MMC code to a separate file
Currently, arch/arm/mach-uniphier/boot-mode/boot-mode.c is messed up
with unrelated code; there is no reason why the "mmcsetn" command
must be placed in this file.
Split out the MMC code into arch/arm/mach-uniphier/mmc-first-dev.c.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/mmc-first-dev.c b/arch/arm/mach-uniphier/mmc-first-dev.c
new file mode 100644
index 0000000..8c45229
--- /dev/null
+++ b/arch/arm/mach-uniphier/mmc-first-dev.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2016 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <mmc.h>
+#include <linux/errno.h>
+
+static int find_first_mmc_device(void)
+{
+ struct mmc *mmc;
+ int i;
+
+ for (i = 0; (mmc = find_mmc_device(i)); i++) {
+ if (!mmc_init(mmc) && IS_MMC(mmc))
+ return i;
+ }
+
+ return -ENODEV;
+}
+
+int mmc_get_env_dev(void)
+{
+ return find_first_mmc_device();
+}
+
+static int do_mmcsetn(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int dev;
+
+ dev = find_first_mmc_device();
+ if (dev < 0)
+ return CMD_RET_FAILURE;
+
+ setenv_ulong("mmc_first_dev", dev);
+ return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(
+ mmcsetn, 1, 1, do_mmcsetn,
+ "Set the first MMC (not SD) dev number to \"mmc_first_dev\" environment",
+ ""
+);