+static int __init atmci_init_slot(struct atmel_mci *host,
+ struct mci_slot_pdata *slot_data, unsigned int id,
+ u32 sdc_reg)
+{
+ struct mmc_host *mmc;
+ struct atmel_mci_slot *slot;
+
+ mmc = mmc_alloc_host(sizeof(struct atmel_mci_slot), &host->pdev->dev);
+ if (!mmc)
+ return -ENOMEM;
+
+ slot = mmc_priv(mmc);
+ slot->mmc = mmc;
+ slot->host = host;
+ slot->detect_pin = slot_data->detect_pin;
+ slot->wp_pin = slot_data->wp_pin;
+ slot->sdc_reg = sdc_reg;
+
+ mmc->ops = &atmci_ops;
+ mmc->f_min = DIV_ROUND_UP(host->bus_hz, 512);
+ mmc->f_max = host->bus_hz / 2;
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+ if (slot_data->bus_width >= 4)
+ mmc->caps |= MMC_CAP_4_BIT_DATA;
+
+ mmc->max_hw_segs = 64;
+ mmc->max_phys_segs = 64;
+ mmc->max_req_size = 32768 * 512;
+ mmc->max_blk_size = 32768;
+ mmc->max_blk_count = 512;
+
+ /* Assume card is present initially */
+ set_bit(ATMCI_CARD_PRESENT, &slot->flags);
+ if (gpio_is_valid(slot->detect_pin)) {
+ if (gpio_request(slot->detect_pin, "mmc_detect")) {
+ dev_dbg(&mmc->class_dev, "no detect pin available\n");
+ slot->detect_pin = -EBUSY;
+ } else if (gpio_get_value(slot->detect_pin)) {
+ clear_bit(ATMCI_CARD_PRESENT, &slot->flags);
+ }
+ }
+
+ if (!gpio_is_valid(slot->detect_pin))
+ mmc->caps |= MMC_CAP_NEEDS_POLL;
+
+ if (gpio_is_valid(slot->wp_pin)) {
+ if (gpio_request(slot->wp_pin, "mmc_wp")) {
+ dev_dbg(&mmc->class_dev, "no WP pin available\n");
+ slot->wp_pin = -EBUSY;
+ }
+ }
+
+ host->slot[id] = slot;
+ mmc_add_host(mmc);
+
+ if (gpio_is_valid(slot->detect_pin)) {
+ int ret;
+
+ setup_timer(&slot->detect_timer, atmci_detect_change,
+ (unsigned long)slot);
+
+ ret = request_irq(gpio_to_irq(slot->detect_pin),
+ atmci_detect_interrupt,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "mmc-detect", slot);
+ if (ret) {
+ dev_dbg(&mmc->class_dev,
+ "could not request IRQ %d for detect pin\n",
+ gpio_to_irq(slot->detect_pin));
+ gpio_free(slot->detect_pin);
+ slot->detect_pin = -EBUSY;
+ }
+ }
+
+ atmci_init_debugfs(slot);
+
+ return 0;
+}
+
+static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot,
+ unsigned int id)
+{
+ /* Debugfs stuff is cleaned up by mmc core */
+
+ set_bit(ATMCI_SHUTDOWN, &slot->flags);
+ smp_wmb();
+
+ mmc_remove_host(slot->mmc);
+
+ if (gpio_is_valid(slot->detect_pin)) {
+ int pin = slot->detect_pin;
+
+ free_irq(gpio_to_irq(pin), slot);
+ del_timer_sync(&slot->detect_timer);
+ gpio_free(pin);
+ }
+ if (gpio_is_valid(slot->wp_pin))
+ gpio_free(slot->wp_pin);
+
+ slot->host->slot[id] = NULL;
+ mmc_free_host(slot->mmc);
+}
+