* 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
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;
}
git.openpandora.org / pandora-kernel.git / blobdiff