initial_commit

1 files changed, 68 insertions, 0 deletions

diff --git a/arch/arm/mach-u300/mmc.c b/arch/arm/mach-u300/mmc.c
new file mode 100644
index 00000000..677ccef5
--- /dev/null
+++ b/arch/arm/mach-u300/mmc.c
@@ -0,0 +1,68 @@
+/*
+ *
+ * arch/arm/mach-u300/mmc.c
+ *
+ *
+ * Copyright (C) 2009 ST-Ericsson SA
+ * License terms: GNU General Public License (GPL) version 2
+ *
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ * Author: Johan Lundin
+ * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
+ */
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/mmc/host.h>
+#include <linux/gpio.h>
+#include <linux/dmaengine.h>
+#include <linux/amba/mmci.h>
+#include <linux/slab.h>
+#include <mach/coh901318.h>
+#include <mach/dma_channels.h>
+
+#include "mmc.h"
+#include "padmux.h"
+
+static struct mmci_platform_data mmc0_plat_data = {
+	/*
+	 * Do not set ocr_mask or voltage translation function,
+	 * we have a regulator we can control instead.
+	 */
+	/* Nominally 2.85V on our platform */
+	.f_max = 24000000,
+	.gpio_wp = -1,
+	.gpio_cd = U300_GPIO_PIN_MMC_CD,
+	.cd_invert = true,
+	.capabilities = MMC_CAP_MMC_HIGHSPEED |
+	MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
+#ifdef CONFIG_COH901318
+	.dma_filter = coh901318_filter_id,
+	.dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX,
+	/* Don't specify a TX channel, this RX channel is bidirectional */
+#endif
+};
+
+int __devinit mmc_init(struct amba_device *adev)
+{
+	struct device *mmcsd_device = &adev->dev;
+	struct pmx *pmx;
+	int ret = 0;
+
+	mmcsd_device->platform_data = &mmc0_plat_data;
+
+	/*
+	 * Setup padmuxing for MMC. Since this must always be
+	 * compiled into the kernel, pmx is never released.
+	 */
+	pmx = pmx_get(mmcsd_device, U300_APP_PMX_MMC_SETTING);
+
+	if (IS_ERR(pmx))
+		pr_warning("Could not get padmux handle\n");
+	else {
+		ret = pmx_activate(mmcsd_device, pmx);
+		if (IS_ERR_VALUE(ret))
+			pr_warning("Could not activate padmuxing\n");
+	}
+
+	return ret;
+}