1 files changed, 23 insertions, 137 deletions

diff --git a/arch/arm/mach-u300/mmc.c b/arch/arm/mach-u300/mmc.c
index de1ac9a..677ccef 100644
--- a/arch/arm/mach-u300/mmc.c
+++ b/arch/arm/mach-u300/mmc.c
@@ -3,159 +3,52 @@
  * arch/arm/mach-u300/mmc.c
  *
  *
- * Copyright (C) 2009 ST-Ericsson AB
+ * 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 <johan.lundin@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/input.h>
-#include <linux/workqueue.h>
-#include <linux/delay.h>
-#include <linux/regulator/consumer.h>
-#include <linux/regulator/machine.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"
 
-struct mmci_card_event {
-	struct input_dev *mmc_input;
-	int mmc_inserted;
-	struct work_struct workq;
-	struct mmci_platform_data mmc0_plat_data;
+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
 };
 
-static unsigned int mmc_status(struct device *dev)
-{
-	struct mmci_card_event *mmci_card = container_of(
-		dev->platform_data,
-		struct mmci_card_event, mmc0_plat_data);
-
-	return mmci_card->mmc_inserted;
-}
-
-static int mmci_callback(void *data)
-{
-	struct mmci_card_event *mmci_card = data;
-
-	disable_irq_on_gpio_pin(U300_GPIO_PIN_MMC_CD);
-	schedule_work(&mmci_card->workq);
-
-	return 0;
-}
-
-
-static ssize_t gpio_show(struct device *dev, struct device_attribute *attr,
-		  char *buf)
-{
-	struct mmci_card_event *mmci_card = container_of(
-		dev->platform_data,
-		struct mmci_card_event, mmc0_plat_data);
-
-
-	return sprintf(buf, "%d\n", !mmci_card->mmc_inserted);
-}
-
-static DEVICE_ATTR(mmc_inserted, S_IRUGO, gpio_show, NULL);
-
-static void _mmci_callback(struct work_struct *ws)
-{
-
-	struct mmci_card_event *mmci_card = container_of(
-		ws,
-		struct mmci_card_event, workq);
-
-	mdelay(20);
-
-	mmci_card->mmc_inserted = !gpio_get_value(U300_GPIO_PIN_MMC_CD);
-
-	input_report_switch(mmci_card->mmc_input, KEY_INSERT,
-			    mmci_card->mmc_inserted);
-	input_sync(mmci_card->mmc_input);
-
-	pr_debug("MMC/SD card was %s\n",
-		 mmci_card->mmc_inserted ? "inserted" : "removed");
-
-	enable_irq_on_gpio_pin(U300_GPIO_PIN_MMC_CD, mmci_card->mmc_inserted);
-}
-
 int __devinit mmc_init(struct amba_device *adev)
 {
-	struct mmci_card_event *mmci_card;
 	struct device *mmcsd_device = &adev->dev;
 	struct pmx *pmx;
 	int ret = 0;
 
-	mmci_card = kzalloc(sizeof(struct mmci_card_event), GFP_KERNEL);
-	if (!mmci_card)
-		return -ENOMEM;
-
-	/*
-	 * Do not set ocr_mask or voltage translation function,
-	 * we have a regulator we can control instead.
-	 */
-	/* Nominally 2.85V on our platform */
-	mmci_card->mmc0_plat_data.f_max = 24000000;
-	mmci_card->mmc0_plat_data.status = mmc_status;
-	mmci_card->mmc0_plat_data.gpio_wp = -1;
-	mmci_card->mmc0_plat_data.gpio_cd = -1;
-	mmci_card->mmc0_plat_data.capabilities = MMC_CAP_MMC_HIGHSPEED |
-		MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
-
-	mmcsd_device->platform_data = (void *) &mmci_card->mmc0_plat_data;
-
-	INIT_WORK(&mmci_card->workq, _mmci_callback);
-
-	ret = gpio_request(U300_GPIO_PIN_MMC_CD, "MMC card detection");
-	if (ret) {
-		printk(KERN_CRIT "Could not allocate MMC card detection " \
-		       "GPIO pin\n");
-		goto out;
-	}
-
-	ret = gpio_direction_input(U300_GPIO_PIN_MMC_CD);
-	if (ret) {
-		printk(KERN_CRIT "Invalid GPIO pin requested\n");
-		goto out;
-	}
-
-	ret = sysfs_create_file(&mmcsd_device->kobj,
-			       &dev_attr_mmc_inserted.attr);
-	if (ret)
-		goto out;
-
-	mmci_card->mmc_input = input_allocate_device();
-	if (!mmci_card->mmc_input) {
-		printk(KERN_CRIT "Could not allocate MMC input device\n");
-		return -ENOMEM;
-	}
-
-	mmci_card->mmc_input->name = "MMC insert notification";
-	mmci_card->mmc_input->id.bustype = BUS_HOST;
-	mmci_card->mmc_input->id.vendor = 0;
-	mmci_card->mmc_input->id.product = 0;
-	mmci_card->mmc_input->id.version = 0x0100;
-	mmci_card->mmc_input->dev.parent = mmcsd_device;
-	input_set_capability(mmci_card->mmc_input, EV_SW, KEY_INSERT);
-
-	/*
-	 * Since this must always be compiled into the kernel, this input
-	 * is never unregistered or free:ed.
-	 */
-	ret = input_register_device(mmci_card->mmc_input);
-	if (ret) {
-		input_free_device(mmci_card->mmc_input);
-		goto out;
-	}
-
-	input_set_drvdata(mmci_card->mmc_input, mmci_card);
+	mmcsd_device->platform_data = &mmc0_plat_data;
 
 	/*
 	 * Setup padmuxing for MMC. Since this must always be
@@ -171,12 +64,5 @@ int __devinit mmc_init(struct amba_device *adev)
 			pr_warning("Could not activate padmuxing\n");
 	}
 
-	ret = gpio_register_callback(U300_GPIO_PIN_MMC_CD, mmci_callback,
-				     mmci_card);
-
-	schedule_work(&mmci_card->workq);
-
-	printk(KERN_INFO "Registered MMC insert/remove notification\n");
-out:
 	return ret;
 }