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authorJaehoon Chung <jh80.chung@samsung.com>2012-07-03 16:58:04 +0900
committerJohn Rigby <john.rigby@linaro.org>2012-12-06 13:51:45 -0700
commit7e92badca45bcbcef1c7f20818a1f57f34f9bac8 (patch)
tree8b9ddfd2b5be175878b558fc009c9c99ae718724 /drivers
parent0b1c7d66e7e218f88096378dfa34eb8950c78742 (diff)
downloadu-boot-linaro-stable-7e92badca45bcbcef1c7f20818a1f57f34f9bac8.tar.gz
EXYNOS: mmc: support DesignWare Controller for Samsung-SoC
Support DesignWare MMC Controller for Samsung Specific. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Rajeshawari Shinde <rajeshwari.s@samsung.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/exynos_dw_mmc.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
new file mode 100644
index 000000000..286a7df30
--- /dev/null
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -0,0 +1,58 @@
+/*
+ * (C) Copyright 2012 SAMSUNG Electronics
+ * Jaehoon Chung <jh80.chung@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <dwmmc.h>
+#include <asm/arch/dwmmc.h>
+#include <asm/arch/clk.h>
+
+static char *EXYNOS_NAME = "EXYNOS DWMMC";
+
+static void exynos_dwmci_clksel(struct dwmci_host *host)
+{
+ u32 val;
+ val = DWMCI_SET_SAMPLE_CLK(DWMCI_SHIFT_0) |
+ DWMCI_SET_DRV_CLK(DWMCI_SHIFT_0) | DWMCI_SET_DIV_RATIO(0);
+
+ dwmci_writel(host, DWMCI_CLKSEL, val);
+}
+
+int exynos_dwmci_init(u32 regbase, int bus_width, int index)
+{
+ struct dwmci_host *host = NULL;
+ host = (struct dwmci_host *)malloc(sizeof(struct dwmci_host));
+ if (!host) {
+ printf("dwmci_host malloc fail!\n");
+ return 1;
+ }
+
+ host->name = EXYNOS_NAME;
+ host->ioaddr = (void *)regbase;
+ host->buswidth = bus_width;
+ host->clksel = exynos_dwmci_clksel;
+ host->dev_index = index;
+ host->mmc_clk = get_mmc_clk;
+
+ add_dwmci(host, 52000000, 400000, index);
+
+ return 0;
+}
+