#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/clk.h>
+#include <linux/scatterlist.h>
+#include <linux/i2c/tps65010.h>
#include <asm/io.h>
#include <asm/irq.h>
-#include <asm/scatterlist.h>
#include <asm/mach-types.h>
#include <asm/arch/board.h>
+#include <asm/arch/mmc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/dma.h>
#include <asm/arch/mux.h>
#include <asm/arch/fpga.h>
-#include <asm/arch/tps65010.h>
#define OMAP_MMC_REG_CMD 0x00
#define OMAP_MMC_REG_ARGL 0x04
* when the cover switch is open */
#define OMAP_MMC_SWITCH_POLL_DELAY 500
-static int mmc_omap_enable_poll = 1;
+struct mmc_omap_host;
+
+struct mmc_omap_slot {
+ int id;
+ unsigned int vdd;
+ u16 saved_con;
+ u16 bus_mode;
+ unsigned int fclk_freq;
+ unsigned powered:1;
+
+ struct work_struct switch_work;
+ struct timer_list switch_timer;
+ unsigned cover_open;
+
+ struct mmc_request *mrq;
+ struct mmc_omap_host *host;
+ struct mmc_host *mmc;
+ struct omap_mmc_slot_data *pdata;
+};
struct mmc_omap_host {
int initialized;
unsigned dma_len;
short power_pin;
- short wp_pin;
- int switch_pin;
- struct work_struct switch_work;
- struct timer_list switch_timer;
- int switch_last_state;
+ struct mmc_omap_slot *slots[OMAP_MMC_MAX_SLOTS];
+ struct mmc_omap_slot *current_slot;
+ spinlock_t slot_lock;
+ wait_queue_head_t slot_wq;
+ int nr_slots;
+
+ struct omap_mmc_platform_data *pdata;
};
-static inline int
-mmc_omap_cover_is_open(struct mmc_omap_host *host)
+static void mmc_omap_select_slot(struct mmc_omap_slot *slot, int claimed)
{
- if (host->switch_pin < 0)
- return 0;
- return omap_get_gpio_datain(host->switch_pin);
+ struct mmc_omap_host *host = slot->host;
+ unsigned long flags;
+
+ if (claimed)
+ goto no_claim;
+ spin_lock_irqsave(&host->slot_lock, flags);
+ while (host->mmc != NULL) {
+ spin_unlock_irqrestore(&host->slot_lock, flags);
+ wait_event(host->slot_wq, host->mmc == NULL);
+ spin_lock_irqsave(&host->slot_lock, flags);
+ }
+ host->mmc = slot->mmc;
+ spin_unlock_irqrestore(&host->slot_lock, flags);
+no_claim:
+ clk_enable(host->fclk);
+ if (host->current_slot != slot) {
+ if (host->pdata->switch_slot != NULL)
+ host->pdata->switch_slot(mmc_dev(slot->mmc), slot->id);
+ host->current_slot = slot;
+ }
+
+ /* Doing the dummy read here seems to work around some bug
+ * at least in OMAP24xx silicon where the command would not
+ * start after writing the CMD register. Sigh. */
+ OMAP_MMC_READ(host, CON);
+
+ OMAP_MMC_WRITE(host, CON, slot->saved_con);
}
-static ssize_t
-mmc_omap_show_cover_switch(struct device *dev,
- struct device_attribute *attr, char *buf)
+static void mmc_omap_start_request(struct mmc_omap_host *host,
+ struct mmc_request *req);
+
+static void mmc_omap_release_slot(struct mmc_omap_slot *slot)
{
- struct mmc_omap_host *host = dev_get_drvdata(dev);
+ struct mmc_omap_host *host = slot->host;
+ unsigned long flags;
+ int i;
- return sprintf(buf, "%s\n", mmc_omap_cover_is_open(host) ? "open" :
- "closed");
-}
+ BUG_ON(slot == NULL || host->mmc == NULL);
+ clk_disable(host->fclk);
-static DEVICE_ATTR(cover_switch, S_IRUGO, mmc_omap_show_cover_switch, NULL);
+ spin_lock_irqsave(&host->slot_lock, flags);
+ /* Check for any pending requests */
+ for (i = 0; i < host->nr_slots; i++) {
+ struct mmc_omap_slot *new_slot;
+ struct mmc_request *rq;
+
+ if (host->slots[i] == NULL || host->slots[i]->mrq == NULL)
+ continue;
+
+ new_slot = host->slots[i];
+ /* The current slot should not have a request in queue */
+ BUG_ON(new_slot == host->current_slot);
+
+ host->mmc = new_slot->mmc;
+ spin_unlock_irqrestore(&host->slot_lock, flags);
+ mmc_omap_select_slot(new_slot, 1);
+ rq = new_slot->mrq;
+ new_slot->mrq = NULL;
+ mmc_omap_start_request(host, rq);
+ return;
+ }
-static ssize_t
-mmc_omap_show_enable_poll(struct device *dev,
- struct device_attribute *attr, char *buf)
+ host->mmc = NULL;
+ wake_up(&host->slot_wq);
+ spin_unlock_irqrestore(&host->slot_lock, flags);
+}
+
+static inline
+int mmc_omap_cover_is_open(struct mmc_omap_slot *slot)
{
- return snprintf(buf, PAGE_SIZE, "%d\n", mmc_omap_enable_poll);
+ return slot->pdata->get_cover_state(mmc_dev(slot->mmc), slot->id);
}
static ssize_t
-mmc_omap_store_enable_poll(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t size)
+mmc_omap_show_cover_switch(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
- int enable_poll;
+ struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev);
+ struct mmc_omap_slot *slot = mmc_priv(mmc);
- if (sscanf(buf, "%10d", &enable_poll) != 1)
- return -EINVAL;
+ return sprintf(buf, "%s\n", mmc_omap_cover_is_open(slot) ? "open" :
+ "closed");
+}
- if (enable_poll != mmc_omap_enable_poll) {
- struct mmc_omap_host *host = dev_get_drvdata(dev);
+static DEVICE_ATTR(cover_switch, S_IRUGO, mmc_omap_show_cover_switch, NULL);
- mmc_omap_enable_poll = enable_poll;
- if (enable_poll && host->switch_pin >= 0)
- schedule_work(&host->switch_work);
- }
- return size;
+static ssize_t
+mmc_omap_show_slot_name(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev);
+ struct mmc_omap_slot *slot = mmc_priv(mmc);
+
+ return sprintf(buf, "%s\n", slot->pdata->name);
}
-static DEVICE_ATTR(enable_poll, 0664,
- mmc_omap_show_enable_poll, mmc_omap_store_enable_poll);
+static DEVICE_ATTR(slot_name, S_IRUGO, mmc_omap_show_slot_name, NULL);
static void
mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd)
cmdreg = cmd->opcode | (resptype << 8) | (cmdtype << 12);
- if (host->bus_mode == MMC_BUSMODE_OPENDRAIN)
+ if (host->current_slot->bus_mode == MMC_BUSMODE_OPENDRAIN)
cmdreg |= 1 << 6;
if (cmd->flags & MMC_RSP_BUSY)
if (host->data && !(host->data->flags & MMC_DATA_WRITE))
cmdreg |= 1 << 15;
- clk_enable(host->fclk);
-
OMAP_MMC_WRITE(host, CTO, 200);
OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff);
OMAP_MMC_WRITE(host, ARGH, cmd->arg >> 16);
OMAP_MMC_WRITE(host, CMD, cmdreg);
}
+static void
+mmc_omap_release_dma(struct mmc_omap_host *host, struct mmc_data *data,
+ int abort)
+{
+ enum dma_data_direction dma_data_dir;
+
+ BUG_ON(host->dma_ch < 0);
+ if (data->error)
+ omap_stop_dma(host->dma_ch);
+ /* Release DMA channel lazily */
+ mod_timer(&host->dma_timer, jiffies + HZ);
+ if (data->flags & MMC_DATA_WRITE)
+ dma_data_dir = DMA_TO_DEVICE;
+ else
+ dma_data_dir = DMA_FROM_DEVICE;
+ dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
+ dma_data_dir);
+}
+
static void
mmc_omap_xfer_done(struct mmc_omap_host *host, struct mmc_data *data)
{
- if (host->dma_in_use) {
- enum dma_data_direction dma_data_dir;
-
- BUG_ON(host->dma_ch < 0);
- if (data->error)
- omap_stop_dma(host->dma_ch);
- /* Release DMA channel lazily */
- mod_timer(&host->dma_timer, jiffies + HZ);
- if (data->flags & MMC_DATA_WRITE)
- dma_data_dir = DMA_TO_DEVICE;
- else
- dma_data_dir = DMA_FROM_DEVICE;
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
- dma_data_dir);
- }
+ if (host->dma_in_use)
+ mmc_omap_release_dma(host, data, data->error);
+
host->data = NULL;
host->sg_len = 0;
- clk_disable(host->fclk);
/* NOTE: MMC layer will sometimes poll-wait CMD13 next, issuing
* dozens of requests until the card finishes writing data.
*/
if (!data->stop) {
+ struct mmc_host *mmc;
+
host->mrq = NULL;
- mmc_request_done(host->mmc, data->mrq);
+ mmc = host->mmc;
+ mmc_omap_release_slot(host->current_slot);
+ mmc_request_done(mmc, data->mrq);
return;
}
mmc_omap_start_command(host, data->stop);
}
+static void
+mmc_omap_abort_xfer(struct mmc_omap_host *host, struct mmc_data *data)
+{
+ int loops;
+ u16 ie;
+
+ if (host->dma_in_use)
+ mmc_omap_release_dma(host, data, 1);
+
+ host->data = NULL;
+ host->sg_len = 0;
+
+ ie = OMAP_MMC_READ(host, IE);
+ OMAP_MMC_WRITE(host, IE, 0);
+ OMAP_MMC_WRITE(host, CMD, 1 << 7);
+ loops = 0;
+ while (!(OMAP_MMC_READ(host, STAT) & OMAP_MMC_STAT_END_OF_CMD)) {
+ udelay(1);
+ loops++;
+ if (loops == 100000)
+ break;
+ }
+ OMAP_MMC_WRITE(host, STAT, OMAP_MMC_STAT_END_OF_CMD);
+ OMAP_MMC_WRITE(host, IE, ie);
+}
+
static void
mmc_omap_end_of_data(struct mmc_omap_host *host, struct mmc_data *data)
{
}
if (host->data == NULL || cmd->error) {
+ struct mmc_host *mmc;
+
+ if (host->data != NULL)
+ mmc_omap_abort_xfer(host, host->data);
host->mrq = NULL;
- clk_disable(host->fclk);
- mmc_request_done(host->mmc, cmd->mrq);
+ mmc = host->mmc;
+ mmc_omap_release_slot(host->current_slot);
+ mmc_request_done(mmc, cmd->mrq);
}
}
sg = host->data->sg + host->sg_idx;
host->buffer_bytes_left = sg->length;
- host->buffer = page_address(sg->page) + sg->offset;
+ host->buffer = sg_virt(sg);
if (host->buffer_bytes_left > host->total_bytes_left)
host->buffer_bytes_left = host->total_bytes_left;
}
if (status & OMAP_MMC_STAT_CMD_TOUT) {
/* Timeouts are routine with some commands */
if (host->cmd) {
- if (host->cmd->opcode != MMC_ALL_SEND_CID &&
- host->cmd->opcode !=
- MMC_SEND_OP_COND &&
- host->cmd->opcode !=
- MMC_APP_CMD &&
- !mmc_omap_cover_is_open(host))
+ struct mmc_omap_slot *slot =
+ host->current_slot;
+ if (!mmc_omap_cover_is_open(slot))
dev_err(mmc_dev(host->mmc),
"command timeout, CMD %d\n",
host->cmd->opcode);
return IRQ_HANDLED;
}
-static irqreturn_t mmc_omap_switch_irq(int irq, void *dev_id)
+void omap_mmc_notify_cover_event(struct device *dev, int slot, int is_closed)
{
- struct mmc_omap_host *host = (struct mmc_omap_host *) dev_id;
+ struct mmc_omap_host *host = dev_get_drvdata(dev);
- schedule_work(&host->switch_work);
+ BUG_ON(slot >= host->nr_slots);
- return IRQ_HANDLED;
+ /* Other subsystems can call in here before we're initialised. */
+ if (host->nr_slots == 0 || !host->slots[slot])
+ return;
+
+ schedule_work(&host->slots[slot]->switch_work);
}
static void mmc_omap_switch_timer(unsigned long arg)
{
- struct mmc_omap_host *host = (struct mmc_omap_host *) arg;
+ struct mmc_omap_slot *slot = (struct mmc_omap_slot *) arg;
- schedule_work(&host->switch_work);
+ schedule_work(&slot->switch_work);
}
-static void mmc_omap_switch_handler(struct work_struct *work)
+static void mmc_omap_cover_handler(struct work_struct *work)
{
- struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, switch_work);
- struct mmc_card *card;
- static int complained = 0;
- int cards = 0, cover_open;
-
- if (host->switch_pin == -1)
- return;
- cover_open = mmc_omap_cover_is_open(host);
- if (cover_open != host->switch_last_state) {
- kobject_uevent(&host->dev->kobj, KOBJ_CHANGE);
- host->switch_last_state = cover_open;
- }
- mmc_detect_change(host->mmc, 0);
- list_for_each_entry(card, &host->mmc->cards, node) {
- if (mmc_card_present(card))
- cards++;
- }
- if (mmc_omap_cover_is_open(host)) {
- if (!complained) {
- dev_info(mmc_dev(host->mmc), "cover is open\n");
- complained = 1;
- }
- if (mmc_omap_enable_poll)
- mod_timer(&host->switch_timer, jiffies +
- msecs_to_jiffies(OMAP_MMC_SWITCH_POLL_DELAY));
- } else {
- complained = 0;
+ struct mmc_omap_slot *slot = container_of(work, struct mmc_omap_slot,
+ switch_work);
+ int cover_open;
+
+ cover_open = mmc_omap_cover_is_open(slot);
+ if (cover_open != slot->cover_open) {
+ sysfs_notify(&slot->mmc->class_dev.kobj, NULL, "cover_switch");
+ slot->cover_open = cover_open;
+ dev_info(mmc_dev(slot->mmc), "cover is now %s\n",
+ cover_open ? "open" : "closed");
}
+ mmc_detect_change(slot->mmc, slot->id);
}
/* Prepare to transfer the next segment of a scatterlist */
static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req)
{
- int timeout;
+ unsigned int timeout, cycle_ns;
u16 reg;
- /* Convert ns to clock cycles by assuming 20MHz frequency
- * 1 cycle at 20MHz = 500 ns
- */
- timeout = req->data->timeout_clks + req->data->timeout_ns / 500;
+ cycle_ns = 1000000000 / host->current_slot->fclk_freq;
+ timeout = req->data->timeout_ns / cycle_ns;
+ timeout += req->data->timeout_clks;
/* Check if we need to use timeout multiplier register */
reg = OMAP_MMC_READ(host, SDIO);
}
}
-static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req)
+static void mmc_omap_start_request(struct mmc_omap_host *host,
+ struct mmc_request *req)
{
- struct mmc_omap_host *host = mmc_priv(mmc);
-
- WARN_ON(host->mrq != NULL);
+ BUG_ON(host->mrq != NULL);
host->mrq = req;
mmc_omap_start_command(host, req->cmd);
if (host->dma_in_use)
omap_start_dma(host->dma_ch);
+ BUG_ON(irqs_disabled());
+}
+
+static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req)
+{
+ struct mmc_omap_slot *slot = mmc_priv(mmc);
+ struct mmc_omap_host *host = slot->host;
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->slot_lock, flags);
+ if (host->mmc != NULL) {
+ BUG_ON(slot->mrq != NULL);
+ slot->mrq = req;
+ spin_unlock_irqrestore(&host->slot_lock, flags);
+ return;
+ } else
+ host->mmc = mmc;
+ spin_unlock_irqrestore(&host->slot_lock, flags);
+ mmc_omap_select_slot(slot, 1);
+ mmc_omap_start_request(host, req);
}
static void innovator_fpga_socket_power(int on)
static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios)
{
- struct mmc_omap_host *host = mmc_priv(mmc);
+ struct mmc_omap_slot *slot = mmc_priv(mmc);
+ struct mmc_omap_host *host = slot->host;
int func_clk_rate = clk_get_rate(host->fclk);
int dsor;
if (dsor > 250)
dsor = 250;
- dsor++;
+
+ slot->fclk_freq = func_clk_rate / dsor;
if (ios->bus_width == MMC_BUS_WIDTH_4)
dsor |= 1 << 15;
static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
- struct mmc_omap_host *host = mmc_priv(mmc);
- int dsor;
- int i;
+ struct mmc_omap_slot *slot = mmc_priv(mmc);
+ struct mmc_omap_host *host = slot->host;
+ int i, dsor;
dsor = mmc_omap_calc_divisor(mmc, ios);
host->bus_mode = ios->bus_mode;
clk_disable(host->fclk);
}
-static int mmc_omap_get_ro(struct mmc_host *mmc)
-{
- struct mmc_omap_host *host = mmc_priv(mmc);
-
- return host->wp_pin && omap_get_gpio_datain(host->wp_pin);
-}
-
static const struct mmc_host_ops mmc_omap_ops = {
.request = mmc_omap_request,
.set_ios = mmc_omap_set_ios,
- .get_ro = mmc_omap_get_ro,
};
-static int __init mmc_omap_probe(struct platform_device *pdev)
+static int __init mmc_omap_new_slot(struct mmc_omap_host *host, int id)
{
- struct omap_mmc_conf *minfo = pdev->dev.platform_data;
+ struct mmc_omap_slot *slot = NULL;
struct mmc_host *mmc;
+ int r;
+
+ mmc = mmc_alloc_host(sizeof(struct mmc_omap_slot), host->dev);
+ if (mmc == NULL)
+ return -ENOMEM;
+
+ slot = mmc_priv(mmc);
+ slot->host = host;
+ slot->mmc = mmc;
+ slot->id = id;
+ slot->pdata = &host->pdata->slots[id];
+
+ host->slots[id] = slot;
+
+ mmc->caps = MMC_CAP_MULTIWRITE;
+ if (host->pdata->conf.wire4)
+ mmc->caps |= MMC_CAP_4_BIT_DATA;
+
+ mmc->ops = &mmc_omap_ops;
+ mmc->f_min = 400000;
+
+ if (cpu_class_is_omap2())
+ mmc->f_max = 48000000;
+ else
+ mmc->f_max = 24000000;
+ if (host->pdata->max_freq)
+ mmc->f_max = min(host->pdata->max_freq, mmc->f_max);
+ mmc->ocr_avail = slot->pdata->ocr_mask;
+
+ /* Use scatterlist DMA to reduce per-transfer costs.
+ * NOTE max_seg_size assumption that small blocks aren't
+ * normally used (except e.g. for reading SD registers).
+ */
+ mmc->max_phys_segs = 32;
+ mmc->max_hw_segs = 32;
+ mmc->max_blk_size = 2048; /* BLEN is 11 bits (+1) */
+ mmc->max_blk_count = 2048; /* NBLK is 11 bits (+1) */
+ mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+ mmc->max_seg_size = mmc->max_req_size;
+
+ r = mmc_add_host(mmc);
+ if (r < 0)
+ goto err_remove_host;
+
+ if (slot->pdata->name != NULL) {
+ r = device_create_file(&mmc->class_dev,
+ &dev_attr_slot_name);
+ if (r < 0)
+ goto err_remove_host;
+ }
+
+ if (slot->pdata->get_cover_state != NULL) {
+ r = device_create_file(&mmc->class_dev,
+ &dev_attr_cover_switch);
+ if (r < 0)
+ goto err_remove_slot_name;
+
+ INIT_WORK(&slot->switch_work, mmc_omap_cover_handler);
+ init_timer(&slot->switch_timer);
+ slot->switch_timer.function = mmc_omap_switch_timer;
+ slot->switch_timer.data = (unsigned long) slot;
+ schedule_work(&slot->switch_work);
+ }
+
+ return 0;
+
+err_remove_slot_name:
+ if (slot->pdata->name != NULL)
+ device_remove_file(&mmc->class_dev, &dev_attr_slot_name);
+err_remove_host:
+ mmc_remove_host(mmc);
+ mmc_free_host(mmc);
+ return r;
+}
+
+static void mmc_omap_remove_slot(struct mmc_omap_slot *slot)
+{
+ struct mmc_host *mmc = slot->mmc;
+
+ if (slot->pdata->name != NULL)
+ device_remove_file(&mmc->class_dev, &dev_attr_slot_name);
+ if (slot->pdata->get_cover_state != NULL)
+ device_remove_file(&mmc->class_dev, &dev_attr_cover_switch);
+
+ del_timer_sync(&slot->switch_timer);
+ flush_scheduled_work();
+
+ mmc_remove_host(mmc);
+ mmc_free_host(mmc);
+}
+
+static int __init mmc_omap_probe(struct platform_device *pdev)
+{
+ struct omap_mmc_platform_data *pdata = pdev->dev.platform_data;
struct mmc_omap_host *host = NULL;
struct resource *res;
- int ret = 0;
+ int i, ret = 0;
int irq;
- if (minfo == NULL) {
+ if (pdata == NULL) {
dev_err(&pdev->dev, "platform data missing\n");
return -ENXIO;
}
+ if (pdata->nr_slots == 0) {
+ dev_err(&pdev->dev, "no slots\n");
+ return -ENXIO;
+ }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
return -ENXIO;
res = request_mem_region(res->start, res->end - res->start + 1,
- pdev->name);
+ pdev->name);
if (res == NULL)
return -EBUSY;
- mmc = mmc_alloc_host(sizeof(struct mmc_omap_host), &pdev->dev);
- if (mmc == NULL) {
+ host = kzalloc(sizeof(struct mmc_omap_host), GFP_KERNEL);
+ if (host == NULL) {
ret = -ENOMEM;
goto err_free_mem_region;
}
- host = mmc_priv(mmc);
- host->mmc = mmc;
-
spin_lock_init(&host->dma_lock);
init_timer(&host->dma_timer);
+ spin_lock_init(&host->slot_lock);
+ init_waitqueue_head(&host->slot_wq);
+
host->dma_timer.function = mmc_omap_dma_timer;
host->dma_timer.data = (unsigned long) host;
+ host->pdata = pdata;
+ host->dev = &pdev->dev;
+ platform_set_drvdata(pdev, host);
+
host->id = pdev->id;
host->mem_res = res;
host->irq = irq;
+ host->use_dma = 1;
+ host->dma_ch = -1;
+
+ host->irq = irq;
+ host->phys_base = host->mem_res->start;
+ host->virt_base = (void __iomem *) IO_ADDRESS(host->phys_base);
+
if (cpu_is_omap24xx()) {
host->iclk = clk_get(&pdev->dev, "mmc_ick");
if (IS_ERR(host->iclk))
goto err_free_iclk;
}
- /* REVISIT:
- * Also, use minfo->cover to decide how to manage
- * the card detect sensing.
- */
- host->power_pin = minfo->power_pin;
- host->switch_pin = minfo->switch_pin;
- host->wp_pin = minfo->wp_pin;
- host->use_dma = 1;
- host->dma_ch = -1;
-
- host->irq = irq;
- host->phys_base = host->mem_res->start;
- host->virt_base = (void __iomem *) IO_ADDRESS(host->phys_base);
-
- mmc->ops = &mmc_omap_ops;
- mmc->f_min = 400000;
- mmc->f_max = 24000000;
- mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
- mmc->caps = MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK;
-
- if (minfo->wire4)
- mmc->caps |= MMC_CAP_4_BIT_DATA;
-
- /* Use scatterlist DMA to reduce per-transfer costs.
- * NOTE max_seg_size assumption that small blocks aren't
- * normally used (except e.g. for reading SD registers).
- */
- mmc->max_phys_segs = 32;
- mmc->max_hw_segs = 32;
- mmc->max_blk_size = 2048; /* BLEN is 11 bits (+1) */
- mmc->max_blk_count = 2048; /* NBLK is 11 bits (+1) */
- mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
- mmc->max_seg_size = mmc->max_req_size;
-
- if (host->power_pin >= 0) {
- if ((ret = omap_request_gpio(host->power_pin)) != 0) {
- dev_err(mmc_dev(host->mmc),
- "Unable to get GPIO pin for MMC power\n");
- goto err_free_fclk;
- }
- omap_set_gpio_direction(host->power_pin, 0);
- }
-
ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
if (ret)
- goto err_free_power_gpio;
+ goto err_free_fclk;
- host->dev = &pdev->dev;
- platform_set_drvdata(pdev, host);
+ if (pdata->init != NULL) {
+ ret = pdata->init(&pdev->dev);
+ if (ret < 0)
+ goto err_free_irq;
+ }
- if (host->switch_pin >= 0) {
- INIT_WORK(&host->switch_work, mmc_omap_switch_handler);
- init_timer(&host->switch_timer);
- host->switch_timer.function = mmc_omap_switch_timer;
- host->switch_timer.data = (unsigned long) host;
- if (omap_request_gpio(host->switch_pin) != 0) {
- dev_warn(mmc_dev(host->mmc), "Unable to get GPIO pin for MMC cover switch\n");
- host->switch_pin = -1;
- goto no_switch;
- }
+ host->nr_slots = pdata->nr_slots;
+ for (i = 0; i < pdata->nr_slots; i++) {
+ ret = mmc_omap_new_slot(host, i);
+ if (ret < 0) {
+ while (--i >= 0)
+ mmc_omap_remove_slot(host->slots[i]);
- omap_set_gpio_direction(host->switch_pin, 1);
- ret = request_irq(OMAP_GPIO_IRQ(host->switch_pin),
- mmc_omap_switch_irq, IRQF_TRIGGER_RISING, DRIVER_NAME, host);
- if (ret) {
- dev_warn(mmc_dev(host->mmc), "Unable to get IRQ for MMC cover switch\n");
- omap_free_gpio(host->switch_pin);
- host->switch_pin = -1;
- goto no_switch;
- }
- ret = device_create_file(&pdev->dev, &dev_attr_cover_switch);
- if (ret == 0) {
- ret = device_create_file(&pdev->dev, &dev_attr_enable_poll);
- if (ret != 0)
- device_remove_file(&pdev->dev, &dev_attr_cover_switch);
+ goto err_plat_cleanup;
}
- if (ret) {
- dev_warn(mmc_dev(host->mmc), "Unable to create sysfs attributes\n");
- free_irq(OMAP_GPIO_IRQ(host->switch_pin), host);
- omap_free_gpio(host->switch_pin);
- host->switch_pin = -1;
- goto no_switch;
- }
- if (mmc_omap_enable_poll && mmc_omap_cover_is_open(host))
- schedule_work(&host->switch_work);
}
- mmc_add_host(mmc);
-
return 0;
-no_switch:
- /* FIXME: Free other resources too. */
- if (host) {
- if (host->iclk && !IS_ERR(host->iclk))
- clk_put(host->iclk);
- if (host->fclk && !IS_ERR(host->fclk))
- clk_put(host->fclk);
- mmc_free_host(host->mmc);
- }
-err_free_power_gpio:
- if (host->power_pin >= 0)
- omap_free_gpio(host->power_pin);
+err_plat_cleanup:
+ if (pdata->cleanup)
+ pdata->cleanup(&pdev->dev);
+err_free_irq:
+ free_irq(host->irq, host);
err_free_fclk:
clk_put(host->fclk);
err_free_iclk:
clk_put(host->iclk);
}
err_free_mmc_host:
- mmc_free_host(host->mmc);
+ kfree(host);
err_free_mem_region:
release_mem_region(res->start, res->end - res->start + 1);
return ret;
static int mmc_omap_remove(struct platform_device *pdev)
{
struct mmc_omap_host *host = platform_get_drvdata(pdev);
+ int i;
platform_set_drvdata(pdev, NULL);
BUG_ON(host == NULL);
- mmc_remove_host(host->mmc);
- free_irq(host->irq, host);
+ for (i = 0; i < host->nr_slots; i++)
+ mmc_omap_remove_slot(host->slots[i]);
+
+ if (host->pdata->cleanup)
+ host->pdata->cleanup(&pdev->dev);
- if (host->power_pin >= 0)
- omap_free_gpio(host->power_pin);
- if (host->switch_pin >= 0) {
- device_remove_file(&pdev->dev, &dev_attr_enable_poll);
- device_remove_file(&pdev->dev, &dev_attr_cover_switch);
- free_irq(OMAP_GPIO_IRQ(host->switch_pin), host);
- omap_free_gpio(host->switch_pin);
- host->switch_pin = -1;
- del_timer_sync(&host->switch_timer);
- flush_scheduled_work();
- }
if (host->iclk && !IS_ERR(host->iclk))
clk_put(host->iclk);
if (host->fclk && !IS_ERR(host->fclk))
release_mem_region(pdev->resource[0].start,
pdev->resource[0].end - pdev->resource[0].start + 1);
- mmc_free_host(host->mmc);
+ kfree(host);
return 0;
}
#ifdef CONFIG_PM
static int mmc_omap_suspend(struct platform_device *pdev, pm_message_t mesg)
{
- int ret = 0;
+ int i, ret = 0;
struct mmc_omap_host *host = platform_get_drvdata(pdev);
- if (host && host->suspended)
+ if (host == NULL || host->suspended)
return 0;
- if (host) {
- ret = mmc_suspend_host(host->mmc, mesg);
- if (ret == 0)
- host->suspended = 1;
+ for (i = 0; i < host->nr_slots; i++) {
+ struct mmc_omap_slot *slot;
+
+ slot = host->slots[i];
+ ret = mmc_suspend_host(slot->mmc, mesg);
+ if (ret < 0) {
+ while (--i >= 0) {
+ slot = host->slots[i];
+ mmc_resume_host(slot->mmc);
+ }
+ return ret;
+ }
}
- return ret;
+ host->suspended = 1;
+ return 0;
}
static int mmc_omap_resume(struct platform_device *pdev)
{
- int ret = 0;
+ int i, ret = 0;
struct mmc_omap_host *host = platform_get_drvdata(pdev);
- if (host && !host->suspended)
+ if (host == NULL || !host->suspended)
return 0;
- if (host) {
- ret = mmc_resume_host(host->mmc);
- if (ret == 0)
- host->suspended = 0;
- }
+ for (i = 0; i < host->nr_slots; i++) {
+ struct mmc_omap_slot *slot;
+ slot = host->slots[i];
+ ret = mmc_resume_host(slot->mmc);
+ if (ret < 0)
+ return ret;
- return ret;
+ host->suspended = 0;
+ }
+ return 0;
}
#else
#define mmc_omap_suspend NULL
.resume = mmc_omap_resume,
.driver = {
.name = DRIVER_NAME,
+ .owner = THIS_MODULE,
},
};
MODULE_DESCRIPTION("OMAP Multimedia Card driver");
MODULE_LICENSE("GPL");
-MODULE_ALIAS(DRIVER_NAME);
+MODULE_ALIAS("platform:" DRIVER_NAME);
MODULE_AUTHOR("Juha Yrjölä");
projects / linux-2.6-omap-h63xx.git / blobdiff