--- /dev/null
+Broadcom BCM2835 SDHCI controller
+
+This file documents differences between the core properties described
+by mmc.txt and the properties that represent the BCM2835 controller.
+
+Required properties:
+- compatible : Should be "brcm,bcm2835-sdhci".
+- clocks : The clock feeding the SDHCI controller.
+
+Example:
+
+sdhci: sdhci {
+ compatible = "brcm,bcm2835-sdhci";
+ reg = <0x7e300000 0x100>;
+ interrupts = <2 30>;
+ clocks = <&clk_mmc>;
+ bus-width = <4>;
+};
--- /dev/null
+* Marvell orion-sdio controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the orion-sdio driver.
+
+- compatible: Should be "marvell,orion-sdio"
+- clocks: reference to the clock of the SDIO interface
+
+Example:
+
+ mvsdio@d00d4000 {
+ compatible = "marvell,orion-sdio";
+ reg = <0xd00d4000 0x200>;
+ interrupts = <54>;
+ clocks = <&gateclk 17>;
+ status = "disabled";
+ };
static DEFINE_MUTEX(open_lock);
-enum mmc_blk_status {
- MMC_BLK_SUCCESS = 0,
- MMC_BLK_PARTIAL,
- MMC_BLK_CMD_ERR,
- MMC_BLK_RETRY,
- MMC_BLK_ABORT,
- MMC_BLK_DATA_ERR,
- MMC_BLK_ECC_ERR,
- MMC_BLK_NOMEDIUM,
-};
-
module_param(perdev_minors, int, 0444);
MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device");
} else
areq = NULL;
areq = mmc_start_req(card->host, areq, (int *) &status);
- if (!areq)
+ if (!areq) {
+ if (status == MMC_BLK_NEW_REQUEST)
+ mq->flags |= MMC_QUEUE_NEW_REQUEST;
return 0;
+ }
mq_rq = container_of(areq, struct mmc_queue_req, mmc_active);
brq = &mq_rq->brq;
break;
case MMC_BLK_NOMEDIUM:
goto cmd_abort;
+ default:
+ pr_err("%s: Unhandled return value (%d)",
+ req->rq_disk->disk_name, status);
+ goto cmd_abort;
}
if (ret) {
int ret;
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
+ struct mmc_host *host = card->host;
+ unsigned long flags;
if (req && !mq->mqrq_prev->req)
/* claim host only for the first request */
goto out;
}
+ mq->flags &= ~MMC_QUEUE_NEW_REQUEST;
if (req && req->cmd_flags & REQ_DISCARD) {
/* complete ongoing async transfer before issuing discard */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
ret = mmc_blk_issue_flush(mq, req);
} else {
+ if (!req && host->areq) {
+ spin_lock_irqsave(&host->context_info.lock, flags);
+ host->context_info.is_waiting_last_req = true;
+ spin_unlock_irqrestore(&host->context_info.lock, flags);
+ }
ret = mmc_blk_issue_rw_rq(mq, req);
}
out:
- if (!req)
+ if (!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST))
/* release host only when there are no more requests */
mmc_release_host(card->host);
return ret;
#define MMC_QUEUE_BOUNCESZ 65536
-#define MMC_QUEUE_SUSPENDED (1 << 0)
+
+#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH)
/*
* Prepare a MMC request. This just filters out odd stuff.
do {
struct request *req = NULL;
struct mmc_queue_req *tmp;
+ unsigned int cmd_flags = 0;
spin_lock_irq(q->queue_lock);
set_current_state(TASK_INTERRUPTIBLE);
if (req || mq->mqrq_prev->req) {
set_current_state(TASK_RUNNING);
+ cmd_flags = req ? req->cmd_flags : 0;
mq->issue_fn(mq, req);
+ if (mq->flags & MMC_QUEUE_NEW_REQUEST) {
+ mq->flags &= ~MMC_QUEUE_NEW_REQUEST;
+ continue; /* fetch again */
+ }
/*
* Current request becomes previous request
* and vice versa.
+ * In case of special requests, current request
+ * has been finished. Do not assign it to previous
+ * request.
*/
+ if (cmd_flags & MMC_REQ_SPECIAL_MASK)
+ mq->mqrq_cur->req = NULL;
+
mq->mqrq_prev->brq.mrq.data = NULL;
mq->mqrq_prev->req = NULL;
tmp = mq->mqrq_prev;
{
struct mmc_queue *mq = q->queuedata;
struct request *req;
+ unsigned long flags;
+ struct mmc_context_info *cntx;
if (!mq) {
while ((req = blk_fetch_request(q)) != NULL) {
return;
}
- if (!mq->mqrq_cur->req && !mq->mqrq_prev->req)
+ cntx = &mq->card->host->context_info;
+ if (!mq->mqrq_cur->req && mq->mqrq_prev->req) {
+ /*
+ * New MMC request arrived when MMC thread may be
+ * blocked on the previous request to be complete
+ * with no current request fetched
+ */
+ spin_lock_irqsave(&cntx->lock, flags);
+ if (cntx->is_waiting_last_req) {
+ cntx->is_new_req = true;
+ wake_up_interruptible(&cntx->wait);
+ }
+ spin_unlock_irqrestore(&cntx->lock, flags);
+ } else if (!mq->mqrq_cur->req && !mq->mqrq_prev->req)
wake_up_process(mq->thread);
}
struct task_struct *thread;
struct semaphore thread_sem;
unsigned int flags;
+#define MMC_QUEUE_SUSPENDED (1 << 0)
+#define MMC_QUEUE_NEW_REQUEST (1 << 1)
+
int (*issue_fn)(struct mmc_queue *, struct request *);
void *data;
struct request_queue *queue;
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
+ mmc_init_context_info(card->host);
ret = device_add(&card->dev);
if (ret)
}
EXPORT_SYMBOL(mmc_start_bkops);
+/*
+ * mmc_wait_data_done() - done callback for data request
+ * @mrq: done data request
+ *
+ * Wakes up mmc context, passed as a callback to host controller driver
+ */
+static void mmc_wait_data_done(struct mmc_request *mrq)
+{
+ mrq->host->context_info.is_done_rcv = true;
+ wake_up_interruptible(&mrq->host->context_info.wait);
+}
+
static void mmc_wait_done(struct mmc_request *mrq)
{
complete(&mrq->completion);
}
+/*
+ *__mmc_start_data_req() - starts data request
+ * @host: MMC host to start the request
+ * @mrq: data request to start
+ *
+ * Sets the done callback to be called when request is completed by the card.
+ * Starts data mmc request execution
+ */
+static int __mmc_start_data_req(struct mmc_host *host, struct mmc_request *mrq)
+{
+ mrq->done = mmc_wait_data_done;
+ mrq->host = host;
+ if (mmc_card_removed(host->card)) {
+ mrq->cmd->error = -ENOMEDIUM;
+ return -ENOMEDIUM;
+ }
+ mmc_start_request(host, mrq);
+
+ return 0;
+}
+
static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
{
init_completion(&mrq->completion);
return 0;
}
+/*
+ * mmc_wait_for_data_req_done() - wait for request completed
+ * @host: MMC host to prepare the command.
+ * @mrq: MMC request to wait for
+ *
+ * Blocks MMC context till host controller will ack end of data request
+ * execution or new request notification arrives from the block layer.
+ * Handles command retries.
+ *
+ * Returns enum mmc_blk_status after checking errors.
+ */
+static int mmc_wait_for_data_req_done(struct mmc_host *host,
+ struct mmc_request *mrq,
+ struct mmc_async_req *next_req)
+{
+ struct mmc_command *cmd;
+ struct mmc_context_info *context_info = &host->context_info;
+ int err;
+ unsigned long flags;
+
+ while (1) {
+ wait_event_interruptible(context_info->wait,
+ (context_info->is_done_rcv ||
+ context_info->is_new_req));
+ spin_lock_irqsave(&context_info->lock, flags);
+ context_info->is_waiting_last_req = false;
+ spin_unlock_irqrestore(&context_info->lock, flags);
+ if (context_info->is_done_rcv) {
+ context_info->is_done_rcv = false;
+ context_info->is_new_req = false;
+ cmd = mrq->cmd;
+ if (!cmd->error || !cmd->retries ||
+ mmc_card_removed(host->card)) {
+ err = host->areq->err_check(host->card,
+ host->areq);
+ break; /* return err */
+ } else {
+ pr_info("%s: req failed (CMD%u): %d, retrying...\n",
+ mmc_hostname(host),
+ cmd->opcode, cmd->error);
+ cmd->retries--;
+ cmd->error = 0;
+ host->ops->request(host, mrq);
+ continue; /* wait for done/new event again */
+ }
+ } else if (context_info->is_new_req) {
+ context_info->is_new_req = false;
+ if (!next_req) {
+ err = MMC_BLK_NEW_REQUEST;
+ break; /* return err */
+ }
+ }
+ }
+ return err;
+}
+
static void mmc_wait_for_req_done(struct mmc_host *host,
struct mmc_request *mrq)
{
mmc_pre_req(host, areq->mrq, !host->areq);
if (host->areq) {
- mmc_wait_for_req_done(host, host->areq->mrq);
- err = host->areq->err_check(host->card, host->areq);
+ err = mmc_wait_for_data_req_done(host, host->areq->mrq,
+ areq);
+ if (err == MMC_BLK_NEW_REQUEST) {
+ if (error)
+ *error = err;
+ /*
+ * The previous request was not completed,
+ * nothing to return
+ */
+ return NULL;
+ }
/*
* Check BKOPS urgency for each R1 response
*/
}
if (!err && areq)
- start_err = __mmc_start_req(host, areq->mrq);
+ start_err = __mmc_start_data_req(host, areq->mrq);
if (host->areq)
mmc_post_req(host, host->areq->mrq, 0);
}
#endif
+/**
+ * mmc_init_context_info() - init synchronization context
+ * @host: mmc host
+ *
+ * Init struct context_info needed to implement asynchronous
+ * request mechanism, used by mmc core, host driver and mmc requests
+ * supplier.
+ */
+void mmc_init_context_info(struct mmc_host *host)
+{
+ spin_lock_init(&host->context_info.lock);
+ host->context_info.is_new_req = false;
+ host->context_info.is_done_rcv = false;
+ host->context_info.is_waiting_last_req = false;
+ init_waitqueue_head(&host->context_info.wait);
+}
+
static int __init mmc_init(void)
{
int ret;
void mmc_add_card_debugfs(struct mmc_card *card);
void mmc_remove_card_debugfs(struct mmc_card *card);
+void mmc_init_context_info(struct mmc_host *host);
#endif
if (ret)
goto out;
- if (card->host->caps &
- (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
- MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
- MMC_CAP_UHS_DDR50)) {
+ if (mmc_host_uhs(card->host)) {
if (data & SDIO_UHS_DDR50)
card->sw_caps.sd3_bus_mode
|= SD_MODE_UHS_DDR50;
* If the host doesn't support any of the UHS-I modes, fallback on
* default speed.
*/
- if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
- MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)))
+ if (!mmc_host_uhs(card->host))
return 0;
bus_speed = SDIO_SPEED_SDR12;
bus_speed = SDIO_SPEED_SDR104;
timing = MMC_TIMING_UHS_SDR104;
card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR;
+ card->sd_bus_speed = UHS_SDR104_BUS_SPEED;
} else if ((card->host->caps & MMC_CAP_UHS_DDR50) &&
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) {
bus_speed = SDIO_SPEED_DDR50;
timing = MMC_TIMING_UHS_DDR50;
card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR;
+ card->sd_bus_speed = UHS_DDR50_BUS_SPEED;
} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode &
SD_MODE_UHS_SDR50)) {
bus_speed = SDIO_SPEED_SDR50;
timing = MMC_TIMING_UHS_SDR50;
card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR;
+ card->sd_bus_speed = UHS_SDR50_BUS_SPEED;
} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) &&
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) {
bus_speed = SDIO_SPEED_SDR25;
timing = MMC_TIMING_UHS_SDR25;
card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR;
+ card->sd_bus_speed = UHS_SDR25_BUS_SPEED;
} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 |
MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode &
bus_speed = SDIO_SPEED_SDR12;
timing = MMC_TIMING_UHS_SDR12;
card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR;
+ card->sd_bus_speed = UHS_SDR12_BUS_SPEED;
}
err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed);
* systems that claim 1.8v signalling in fact do not support
* it.
*/
- if ((ocr & R4_18V_PRESENT) &&
- (host->caps &
- (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
- MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
- MMC_CAP_UHS_DDR50))) {
+ if ((ocr & R4_18V_PRESENT) && mmc_host_uhs(host)) {
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180,
true);
if (err) {
mmc_claim_host(host);
/* No need to reinitialize powered-resumed nonremovable cards */
- if (mmc_card_is_removable(host) || !mmc_card_keep_power(host))
+ if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) {
+ sdio_reset(host);
+ mmc_go_idle(host);
err = mmc_sdio_init_card(host, host->ocr, host->card,
mmc_card_keep_power(host));
- else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) {
+ } else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) {
/* We may have switched to 1-bit mode during suspend */
err = sdio_enable_4bit_bus(host->card);
if (err > 0) {
goto out;
}
+ if (mmc_host_uhs(host))
+ /* to query card if 1.8V signalling is supported */
+ host->ocr |= R4_18V_PRESENT;
+
ret = mmc_sdio_init_card(host, host->ocr, host->card,
mmc_card_keep_power(host));
if (!ret && host->sdio_irqs)
/*
* Detect and init the card.
*/
+ if (mmc_host_uhs(host))
+ /* to query card if 1.8V signalling is supported */
+ host->ocr |= R4_18V_PRESENT;
+
err = mmc_sdio_init_card(host, host->ocr, NULL, 0);
if (err) {
if (err == -EAGAIN) {
}
EXPORT_SYMBOL(mmc_gpio_get_cd);
+/**
+ * mmc_gpio_request_ro - request a gpio for write-protection
+ * @host: mmc host
+ * @gpio: gpio number requested
+ *
+ * As devm_* managed functions are used in mmc_gpio_request_ro(), client
+ * drivers do not need to explicitly call mmc_gpio_free_ro() for freeing up,
+ * if the requesting and freeing are only needed at probing and unbinding time
+ * for once. However, if client drivers do something special like runtime
+ * switching for write-protection, they are responsible for calling
+ * mmc_gpio_request_ro() and mmc_gpio_free_ro() as a pair on their own.
+ *
+ * Returns zero on success, else an error.
+ */
int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio)
{
struct mmc_gpio *ctx;
ctx = host->slot.handler_priv;
- ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->ro_label);
+ ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN,
+ ctx->ro_label);
if (ret < 0)
return ret;
}
EXPORT_SYMBOL(mmc_gpio_request_ro);
+/**
+ * mmc_gpio_request_cd - request a gpio for card-detection
+ * @host: mmc host
+ * @gpio: gpio number requested
+ *
+ * As devm_* managed functions are used in mmc_gpio_request_cd(), client
+ * drivers do not need to explicitly call mmc_gpio_free_cd() for freeing up,
+ * if the requesting and freeing are only needed at probing and unbinding time
+ * for once. However, if client drivers do something special like runtime
+ * switching for card-detection, they are responsible for calling
+ * mmc_gpio_request_cd() and mmc_gpio_free_cd() as a pair on their own.
+ *
+ * Returns zero on success, else an error.
+ */
int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio)
{
struct mmc_gpio *ctx;
ctx = host->slot.handler_priv;
- ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->cd_label);
+ ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN,
+ ctx->cd_label);
if (ret < 0)
/*
* don't bother freeing memory. It might still get used by other
irq = -EINVAL;
if (irq >= 0) {
- ret = request_threaded_irq(irq, NULL, mmc_gpio_cd_irqt,
+ ret = devm_request_threaded_irq(&host->class_dev, irq,
+ NULL, mmc_gpio_cd_irqt,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
ctx->cd_label, host);
if (ret < 0)
}
EXPORT_SYMBOL(mmc_gpio_request_cd);
+/**
+ * mmc_gpio_free_ro - free the write-protection gpio
+ * @host: mmc host
+ *
+ * It's provided only for cases that client drivers need to manually free
+ * up the write-protection gpio requested by mmc_gpio_request_ro().
+ */
void mmc_gpio_free_ro(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
gpio = ctx->ro_gpio;
ctx->ro_gpio = -EINVAL;
- gpio_free(gpio);
+ devm_gpio_free(&host->class_dev, gpio);
}
EXPORT_SYMBOL(mmc_gpio_free_ro);
+/**
+ * mmc_gpio_free_cd - free the card-detection gpio
+ * @host: mmc host
+ *
+ * It's provided only for cases that client drivers need to manually free
+ * up the card-detection gpio requested by mmc_gpio_request_cd().
+ */
void mmc_gpio_free_cd(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
return;
if (host->slot.cd_irq >= 0) {
- free_irq(host->slot.cd_irq, host);
+ devm_free_irq(&host->class_dev, host->slot.cd_irq, host);
host->slot.cd_irq = -EINVAL;
}
gpio = ctx->cd_gpio;
ctx->cd_gpio = -EINVAL;
- gpio_free(gpio);
+ devm_gpio_free(&host->class_dev, gpio);
}
EXPORT_SYMBOL(mmc_gpio_free_cd);
YMMV.
+config MMC_SDHCI_BCM2835
+ tristate "SDHCI platform support for the BCM2835 SD/MMC Controller"
+ depends on ARCH_BCM2835
+ depends on MMC_SDHCI_PLTFM
+ select MMC_SDHCI_IO_ACCESSORS
+ help
+ This selects the BCM2835 SD/MMC controller. If you have a BCM2835
+ platform with SD or MMC devices, say Y or M here.
+
+ If unsure, say N.
+
config MMC_OMAP
tristate "TI OMAP Multimedia Card Interface support"
depends on ARCH_OMAP
obj-$(CONFIG_MMC_SDHCI_TEGRA) += sdhci-tegra.o
obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o
obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o
+obj-$(CONFIG_MMC_SDHCI_BCM2835) += sdhci-bcm2835.o
ifeq ($(CONFIG_CB710_DEBUG),y)
CFLAGS-cb710-mmc += -DDEBUG
#include <linux/irq.h>
#include <linux/clk.h>
#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
#include <linux/mmc/host.h>
+#include <linux/mmc/slot-gpio.h>
+#include <linux/pinctrl/consumer.h>
#include <asm/sizes.h>
#include <asm/unaligned.h>
struct mmc_host *mmc;
struct device *dev;
struct clk *clk;
- int gpio_card_detect;
- int gpio_write_protect;
};
#define mvsd_write(offs, val) writel(val, iobase + (offs))
mmc_request_done(host->mmc, mrq);
}
-static irqreturn_t mvsd_card_detect_irq(int irq, void *dev)
-{
- struct mvsd_host *host = dev;
- mmc_detect_change(host->mmc, msecs_to_jiffies(100));
- return IRQ_HANDLED;
-}
-
static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct mvsd_host *host = mmc_priv(mmc);
spin_unlock_irqrestore(&host->lock, flags);
}
-static int mvsd_get_ro(struct mmc_host *mmc)
-{
- struct mvsd_host *host = mmc_priv(mmc);
-
- if (host->gpio_write_protect)
- return gpio_get_value(host->gpio_write_protect);
-
- /*
- * Board doesn't support read only detection; let the mmc core
- * decide what to do.
- */
- return -ENOSYS;
-}
-
static void mvsd_power_up(struct mvsd_host *host)
{
void __iomem *iobase = host->base;
static const struct mmc_host_ops mvsd_ops = {
.request = mvsd_request,
- .get_ro = mvsd_get_ro,
+ .get_ro = mmc_gpio_get_ro,
.set_ios = mvsd_set_ios,
.enable_sdio_irq = mvsd_enable_sdio_irq,
};
static int __init mvsd_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
struct mmc_host *mmc = NULL;
struct mvsd_host *host = NULL;
- const struct mvsdio_platform_data *mvsd_data;
const struct mbus_dram_target_info *dram;
struct resource *r;
int ret, irq;
+ int gpio_card_detect, gpio_write_protect;
+ struct pinctrl *pinctrl;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
- mvsd_data = pdev->dev.platform_data;
- if (!r || irq < 0 || !mvsd_data)
+ if (!r || irq < 0)
return -ENXIO;
mmc = mmc_alloc_host(sizeof(struct mvsd_host), &pdev->dev);
host = mmc_priv(mmc);
host->mmc = mmc;
host->dev = &pdev->dev;
- host->base_clock = mvsd_data->clock / 2;
- host->clk = ERR_PTR(-EINVAL);
+
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(pinctrl))
+ dev_warn(&pdev->dev, "no pins associated\n");
+
+ /*
+ * Some non-DT platforms do not pass a clock, and the clock
+ * frequency is passed through platform_data. On DT platforms,
+ * a clock must always be passed, even if there is no gatable
+ * clock associated to the SDIO interface (it can simply be a
+ * fixed rate clock).
+ */
+ host->clk = devm_clk_get(&pdev->dev, NULL);
+ if (!IS_ERR(host->clk))
+ clk_prepare_enable(host->clk);
+
+ if (np) {
+ if (IS_ERR(host->clk)) {
+ dev_err(&pdev->dev, "DT platforms must have a clock associated\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ host->base_clock = clk_get_rate(host->clk) / 2;
+ gpio_card_detect = of_get_named_gpio(np, "cd-gpios", 0);
+ gpio_write_protect = of_get_named_gpio(np, "wp-gpios", 0);
+ } else {
+ const struct mvsdio_platform_data *mvsd_data;
+ mvsd_data = pdev->dev.platform_data;
+ if (!mvsd_data) {
+ ret = -ENXIO;
+ goto out;
+ }
+ host->base_clock = mvsd_data->clock / 2;
+ gpio_card_detect = mvsd_data->gpio_card_detect;
+ gpio_write_protect = mvsd_data->gpio_write_protect;
+ }
mmc->ops = &mvsd_ops;
goto out;
}
- /* Not all platforms can gate the clock, so it is not
- an error if the clock does not exists. */
- host->clk = devm_clk_get(&pdev->dev, NULL);
- if (!IS_ERR(host->clk))
- clk_prepare_enable(host->clk);
-
- if (mvsd_data->gpio_card_detect) {
- ret = devm_gpio_request_one(&pdev->dev,
- mvsd_data->gpio_card_detect,
- GPIOF_IN, DRIVER_NAME " cd");
- if (ret == 0) {
- irq = gpio_to_irq(mvsd_data->gpio_card_detect);
- ret = devm_request_irq(&pdev->dev, irq,
- mvsd_card_detect_irq,
- IRQ_TYPE_EDGE_RISING |
- IRQ_TYPE_EDGE_FALLING,
- DRIVER_NAME " cd", host);
- if (ret == 0)
- host->gpio_card_detect =
- mvsd_data->gpio_card_detect;
- else
- devm_gpio_free(&pdev->dev,
- mvsd_data->gpio_card_detect);
- }
- }
- if (!host->gpio_card_detect)
+ if (gpio_is_valid(gpio_card_detect)) {
+ ret = mmc_gpio_request_cd(mmc, gpio_card_detect);
+ if (ret)
+ goto out;
+ } else
mmc->caps |= MMC_CAP_NEEDS_POLL;
- if (mvsd_data->gpio_write_protect) {
- ret = devm_gpio_request_one(&pdev->dev,
- mvsd_data->gpio_write_protect,
- GPIOF_IN, DRIVER_NAME " wp");
- if (ret == 0) {
- host->gpio_write_protect =
- mvsd_data->gpio_write_protect;
- }
- }
+ mmc_gpio_request_ro(mmc, gpio_write_protect);
setup_timer(&host->timer, mvsd_timeout_timer, (unsigned long)host);
platform_set_drvdata(pdev, mmc);
pr_notice("%s: %s driver initialized, ",
mmc_hostname(mmc), DRIVER_NAME);
- if (host->gpio_card_detect)
+ if (!(mmc->caps & MMC_CAP_NEEDS_POLL))
printk("using GPIO %d for card detection\n",
- host->gpio_card_detect);
+ gpio_card_detect);
else
printk("lacking card detect (fall back to polling)\n");
return 0;
out:
if (mmc) {
+ mmc_gpio_free_cd(mmc);
+ mmc_gpio_free_ro(mmc);
if (!IS_ERR(host->clk))
clk_disable_unprepare(host->clk);
mmc_free_host(mmc);
struct mvsd_host *host = mmc_priv(mmc);
+ mmc_gpio_free_cd(mmc);
+ mmc_gpio_free_ro(mmc);
mmc_remove_host(mmc);
del_timer_sync(&host->timer);
mvsd_power_down(host);
#define mvsd_resume NULL
#endif
+static const struct of_device_id mvsdio_dt_ids[] = {
+ { .compatible = "marvell,orion-sdio" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mvsdio_dt_ids);
+
static struct platform_driver mvsd_driver = {
.remove = __exit_p(mvsd_remove),
.suspend = mvsd_suspend,
.resume = mvsd_resume,
.driver = {
.name = DRIVER_NAME,
+ .of_match_table = mvsdio_dt_ids,
},
};
--- /dev/null
+/*
+ * BCM2835 SDHCI
+ * Copyright (C) 2012 Stephen Warren
+ * Based on U-Boot's MMC driver for the BCM2835 by Oleksandr Tymoshenko & me
+ * Portions of the code there were obviously based on the Linux kernel at:
+ * git://github.com/raspberrypi/linux.git rpi-3.6.y
+ * commit f5b930b "Main bcm2708 linux port" signed-off-by Dom Cobley.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/mmc/host.h>
+#include "sdhci-pltfm.h"
+
+/*
+ * 400KHz is max freq for card ID etc. Use that as min card clock. We need to
+ * know the min to enable static calculation of max BCM2835_SDHCI_WRITE_DELAY.
+ */
+#define MIN_FREQ 400000
+
+/*
+ * The Arasan has a bugette whereby it may lose the content of successive
+ * writes to registers that are within two SD-card clock cycles of each other
+ * (a clock domain crossing problem). It seems, however, that the data
+ * register does not have this problem, which is just as well - otherwise we'd
+ * have to nobble the DMA engine too.
+ *
+ * This should probably be dynamically calculated based on the actual card
+ * frequency. However, this is the longest we'll have to wait, and doesn't
+ * seem to slow access down too much, so the added complexity doesn't seem
+ * worth it for now.
+ *
+ * 1/MIN_FREQ is (max) time per tick of eMMC clock.
+ * 2/MIN_FREQ is time for two ticks.
+ * Multiply by 1000000 to get uS per two ticks.
+ * *1000000 for uSecs.
+ * +1 for hack rounding.
+ */
+#define BCM2835_SDHCI_WRITE_DELAY (((2 * 1000000) / MIN_FREQ) + 1)
+
+struct bcm2835_sdhci {
+ struct clk *clk;
+ u32 shadow;
+};
+
+static void bcm2835_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
+{
+ writel(val, host->ioaddr + reg);
+
+ udelay(BCM2835_SDHCI_WRITE_DELAY);
+}
+
+static inline u32 bcm2835_sdhci_readl(struct sdhci_host *host, int reg)
+{
+ u32 val = readl(host->ioaddr + reg);
+
+ if (reg == SDHCI_CAPABILITIES)
+ val |= SDHCI_CAN_VDD_330;
+
+ return val;
+}
+
+static void bcm2835_sdhci_writew(struct sdhci_host *host, u16 val, int reg)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct bcm2835_sdhci *bcm2835_host = pltfm_host->priv;
+ u32 oldval = (reg == SDHCI_COMMAND) ? bcm2835_host->shadow :
+ bcm2835_sdhci_readl(host, reg & ~3);
+ u32 word_num = (reg >> 1) & 1;
+ u32 word_shift = word_num * 16;
+ u32 mask = 0xffff << word_shift;
+ u32 newval = (oldval & ~mask) | (val << word_shift);
+
+ if (reg == SDHCI_TRANSFER_MODE)
+ bcm2835_host->shadow = newval;
+ else
+ bcm2835_sdhci_writel(host, newval, reg & ~3);
+}
+
+static u16 bcm2835_sdhci_readw(struct sdhci_host *host, int reg)
+{
+ u32 val = bcm2835_sdhci_readl(host, (reg & ~3));
+ u32 word_num = (reg >> 1) & 1;
+ u32 word_shift = word_num * 16;
+ u32 word = (val >> word_shift) & 0xffff;
+
+ return word;
+}
+
+static void bcm2835_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+ u32 oldval = bcm2835_sdhci_readl(host, reg & ~3);
+ u32 byte_num = reg & 3;
+ u32 byte_shift = byte_num * 8;
+ u32 mask = 0xff << byte_shift;
+ u32 newval = (oldval & ~mask) | (val << byte_shift);
+
+ bcm2835_sdhci_writel(host, newval, reg & ~3);
+}
+
+static u8 bcm2835_sdhci_readb(struct sdhci_host *host, int reg)
+{
+ u32 val = bcm2835_sdhci_readl(host, (reg & ~3));
+ u32 byte_num = reg & 3;
+ u32 byte_shift = byte_num * 8;
+ u32 byte = (val >> byte_shift) & 0xff;
+
+ return byte;
+}
+
+static unsigned int bcm2835_sdhci_get_max_clock(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct bcm2835_sdhci *bcm2835_host = pltfm_host->priv;
+
+ return clk_get_rate(bcm2835_host->clk);
+}
+
+unsigned int bcm2835_sdhci_get_min_clock(struct sdhci_host *host)
+{
+ return MIN_FREQ;
+}
+
+unsigned int bcm2835_sdhci_get_timeout_clock(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct bcm2835_sdhci *bcm2835_host = pltfm_host->priv;
+
+ return clk_get_rate(bcm2835_host->clk);
+}
+
+static struct sdhci_ops bcm2835_sdhci_ops = {
+ .write_l = bcm2835_sdhci_writel,
+ .write_w = bcm2835_sdhci_writew,
+ .write_b = bcm2835_sdhci_writeb,
+ .read_l = bcm2835_sdhci_readl,
+ .read_w = bcm2835_sdhci_readw,
+ .read_b = bcm2835_sdhci_readb,
+ .get_max_clock = bcm2835_sdhci_get_max_clock,
+ .get_min_clock = bcm2835_sdhci_get_min_clock,
+ .get_timeout_clock = bcm2835_sdhci_get_timeout_clock,
+};
+
+static struct sdhci_pltfm_data bcm2835_sdhci_pdata = {
+ .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION,
+ .ops = &bcm2835_sdhci_ops,
+};
+
+static int bcm2835_sdhci_probe(struct platform_device *pdev)
+{
+ struct sdhci_host *host;
+ struct bcm2835_sdhci *bcm2835_host;
+ struct sdhci_pltfm_host *pltfm_host;
+ int ret;
+
+ host = sdhci_pltfm_init(pdev, &bcm2835_sdhci_pdata);
+ if (IS_ERR(host))
+ return PTR_ERR(host);
+
+ bcm2835_host = devm_kzalloc(&pdev->dev, sizeof(*bcm2835_host),
+ GFP_KERNEL);
+ if (!bcm2835_host) {
+ dev_err(mmc_dev(host->mmc),
+ "failed to allocate bcm2835_sdhci\n");
+ return -ENOMEM;
+ }
+
+ pltfm_host = sdhci_priv(host);
+ pltfm_host->priv = bcm2835_host;
+
+ bcm2835_host->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(bcm2835_host->clk)) {
+ ret = PTR_ERR(bcm2835_host->clk);
+ goto err;
+ }
+
+ return sdhci_add_host(host);
+
+err:
+ sdhci_pltfm_free(pdev);
+ return ret;
+}
+
+static int bcm2835_sdhci_remove(struct platform_device *pdev)
+{
+ struct sdhci_host *host = platform_get_drvdata(pdev);
+ int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
+
+ sdhci_remove_host(host, dead);
+ sdhci_pltfm_free(pdev);
+
+ return 0;
+}
+
+static const struct of_device_id bcm2835_sdhci_of_match[] = {
+ { .compatible = "brcm,bcm2835-sdhci" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, bcm2835_sdhci_of_match);
+
+static struct platform_driver bcm2835_sdhci_driver = {
+ .driver = {
+ .name = "sdhci-bcm2835",
+ .owner = THIS_MODULE,
+ .of_match_table = bcm2835_sdhci_of_match,
+ .pm = SDHCI_PLTFM_PMOPS,
+ },
+ .probe = bcm2835_sdhci_probe,
+ .remove = bcm2835_sdhci_remove,
+};
+module_platform_driver(bcm2835_sdhci_driver);
+
+MODULE_DESCRIPTION("BCM2835 SDHCI driver");
+MODULE_AUTHOR("Stephen Warren");
+MODULE_LICENSE("GPL v2");
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
+#include <linux/mmc/slot-gpio.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
- /* fake CARD_PRESENT flag */
u32 val = readl(host->ioaddr + reg);
- if (unlikely((reg == SDHCI_PRESENT_STATE)
- && gpio_is_valid(boarddata->cd_gpio))) {
- if (gpio_get_value(boarddata->cd_gpio))
- /* no card, if a valid gpio says so... */
- val &= ~SDHCI_CARD_PRESENT;
- else
- /* ... in all other cases assume card is present */
- val |= SDHCI_CARD_PRESENT;
- }
-
if (unlikely(reg == SDHCI_CAPABILITIES)) {
/* In FSL esdhc IC module, only bit20 is used to indicate the
* ADMA2 capability of esdhc, but this bit is messed up on
u32 data;
if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) {
- if (boarddata->cd_type == ESDHC_CD_GPIO)
- /*
- * These interrupts won't work with a custom
- * card_detect gpio (only applied to mx25/35)
- */
- val &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT);
-
if (val & SDHCI_INT_CARD_INT) {
/*
* Clear and then set D3CD bit to avoid missing the
switch (boarddata->wp_type) {
case ESDHC_WP_GPIO:
- if (gpio_is_valid(boarddata->wp_gpio))
- return gpio_get_value(boarddata->wp_gpio);
+ return mmc_gpio_get_ro(host->mmc);
case ESDHC_WP_CONTROLLER:
return !(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
SDHCI_WRITE_PROTECT);
.ops = &sdhci_esdhc_ops,
};
-static irqreturn_t cd_irq(int irq, void *data)
-{
- struct sdhci_host *sdhost = (struct sdhci_host *)data;
-
- tasklet_schedule(&sdhost->card_tasklet);
- return IRQ_HANDLED;
-};
-
#ifdef CONFIG_OF
static int
sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
/* write_protect */
if (boarddata->wp_type == ESDHC_WP_GPIO) {
- err = devm_gpio_request_one(&pdev->dev, boarddata->wp_gpio,
- GPIOF_IN, "ESDHC_WP");
+ err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio);
if (err) {
- dev_warn(mmc_dev(host->mmc),
- "no write-protect pin available!\n");
- boarddata->wp_gpio = -EINVAL;
+ dev_err(mmc_dev(host->mmc),
+ "failed to request write-protect gpio!\n");
+ goto disable_clk;
}
- } else {
- boarddata->wp_gpio = -EINVAL;
+ host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
}
/* card_detect */
- if (boarddata->cd_type != ESDHC_CD_GPIO)
- boarddata->cd_gpio = -EINVAL;
-
switch (boarddata->cd_type) {
case ESDHC_CD_GPIO:
- err = devm_gpio_request_one(&pdev->dev, boarddata->cd_gpio,
- GPIOF_IN, "ESDHC_CD");
+ err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio);
if (err) {
dev_err(mmc_dev(host->mmc),
- "no card-detect pin available!\n");
- goto disable_clk;
- }
-
- err = devm_request_irq(&pdev->dev,
- gpio_to_irq(boarddata->cd_gpio), cd_irq,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- mmc_hostname(host->mmc), host);
- if (err) {
- dev_err(mmc_dev(host->mmc), "request irq error\n");
+ "failed to request card-detect gpio!\n");
goto disable_clk;
}
/* fall through */
platform_set_drvdata(pdev, host);
+ if (pdata->pm_caps & MMC_PM_KEEP_POWER) {
+ device_init_wakeup(&pdev->dev, 1);
+ host->mmc->pm_flags |= MMC_PM_WAKE_SDIO_IRQ;
+ } else {
+ device_init_wakeup(&pdev->dev, 0);
+ }
+
return 0;
err_add_host:
clk_disable_unprepare(clk);
clk_put(clk);
- mmc_gpio_free_cd(host->mmc);
err_cd_req:
err_clk_get:
sdhci_pltfm_free(pdev);
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_pxa *pxa = pltfm_host->priv;
- struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
sdhci_remove_host(host, 1);
clk_disable_unprepare(pltfm_host->clk);
clk_put(pltfm_host->clk);
- if (gpio_is_valid(pdata->ext_cd_gpio))
- mmc_gpio_free_cd(host->mmc);
-
sdhci_pltfm_free(pdev);
kfree(pxa);
host->clock = clock;
}
+static inline void sdhci_update_clock(struct sdhci_host *host)
+{
+ unsigned int clock;
+
+ clock = host->clock;
+ host->clock = 0;
+ sdhci_set_clock(host, clock);
+}
+
static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
{
u8 pwr = 0;
static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct sdhci_host *host;
- bool present;
+ int present;
unsigned long flags;
u32 tuning_opcode;
host->mrq = mrq;
- /* If polling, assume that the card is always present. */
- if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
- present = true;
- else
- present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
- SDHCI_CARD_PRESENT;
-
- /* If we're using a cd-gpio, testing the presence bit might fail. */
- if (!present) {
- int ret = mmc_gpio_get_cd(host->mmc);
- if (ret > 0)
- present = true;
+ /*
+ * Firstly check card presence from cd-gpio. The return could
+ * be one of the following possibilities:
+ * negative: cd-gpio is not available
+ * zero: cd-gpio is used, and card is removed
+ * one: cd-gpio is used, and card is present
+ */
+ present = mmc_gpio_get_cd(host->mmc);
+ if (present < 0) {
+ /* If polling, assume that the card is always present. */
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+ present = 1;
+ else
+ present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
+ SDHCI_CARD_PRESENT;
}
if (!present || host->flags & SDHCI_DEVICE_DEAD) {
if (host->version >= SDHCI_SPEC_300) {
u16 clk, ctrl_2;
- unsigned int clock;
/* In case of UHS-I modes, set High Speed Enable */
if ((ios->timing == MMC_TIMING_MMC_HS200) ||
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
/* Re-enable SD Clock */
- clock = host->clock;
- host->clock = 0;
- sdhci_set_clock(host, clock);
+ sdhci_update_clock(host);
}
}
/* Re-enable SD Clock */
- clock = host->clock;
- host->clock = 0;
- sdhci_set_clock(host, clock);
+ sdhci_update_clock(host);
} else
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
(host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) {
/* Some controllers need this kick or reset won't work here */
- if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
- unsigned int clock;
-
+ if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)
/* This is to force an update */
- clock = host->clock;
- host->clock = 0;
- sdhci_set_clock(host, clock);
- }
+ sdhci_update_clock(host);
/* Spec says we should do both at the same time, but Ricoh
controllers do not like that. */
\*****************************************************************************/
#ifdef CONFIG_PM
+void sdhci_enable_irq_wakeups(struct sdhci_host *host)
+{
+ u8 val;
+ u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE
+ | SDHCI_WAKE_ON_INT;
+
+ val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
+ val |= mask ;
+ /* Avoid fake wake up */
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+ val &= ~(SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE);
+ sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
+}
+EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
+
+void sdhci_disable_irq_wakeups(struct sdhci_host *host)
+{
+ u8 val;
+ u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE
+ | SDHCI_WAKE_ON_INT;
+
+ val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
+ val &= ~mask;
+ sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
+}
+EXPORT_SYMBOL_GPL(sdhci_disable_irq_wakeups);
int sdhci_suspend_host(struct sdhci_host *host)
{
return ret;
}
- free_irq(host->irq, host);
-
+ if (!device_may_wakeup(mmc_dev(host->mmc))) {
+ sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
+ free_irq(host->irq, host);
+ } else {
+ sdhci_enable_irq_wakeups(host);
+ enable_irq_wake(host->irq);
+ }
return ret;
}
host->ops->enable_dma(host);
}
- ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
- mmc_hostname(host->mmc), host);
- if (ret)
- return ret;
+ if (!device_may_wakeup(mmc_dev(host->mmc))) {
+ ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
+ mmc_hostname(host->mmc), host);
+ if (ret)
+ return ret;
+ } else {
+ sdhci_disable_irq_wakeups(host);
+ disable_irq_wake(host->irq);
+ }
if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) &&
(host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) {
}
EXPORT_SYMBOL_GPL(sdhci_resume_host);
-
-void sdhci_enable_irq_wakeups(struct sdhci_host *host)
-{
- u8 val;
- val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
- val |= SDHCI_WAKE_ON_INT;
- sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
-}
-
-EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
-
#endif /* CONFIG_PM */
#ifdef CONFIG_PM_RUNTIME
#ifdef SDHCI_USE_LEDS_CLASS
reset:
sdhci_reset(host, SDHCI_RESET_ALL);
+ sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
free_irq(host->irq, host);
#endif
untasklet:
if (!dead)
sdhci_reset(host, SDHCI_RESET_ALL);
+ sdhci_mask_irqs(host, SDHCI_INT_ALL_MASK);
free_irq(host->irq, host);
del_timer_sync(&host->timer);
#include <linux/mmc/sh_mmcif.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/pm_qos.h>
#define CMD_SET_TBIT (1 << 7) /* 1: tran mission bit "Low" */
#define CMD_SET_OPDM (1 << 6) /* 1: open/drain */
#define CMD_SET_CCSH (1 << 5)
+#define CMD_SET_DARS (1 << 2) /* Dual Data Rate */
#define CMD_SET_DATW_1 ((0 << 1) | (0 << 0)) /* 1bit */
#define CMD_SET_DATW_4 ((0 << 1) | (1 << 0)) /* 4bit */
#define CMD_SET_DATW_8 ((1 << 1) | (0 << 0)) /* 8bit */
INT_CCSTO | INT_CRCSTO | INT_WDATTO | \
INT_RDATTO | INT_RBSYTO | INT_RSPTO)
+#define INT_ALL (INT_RBSYE | INT_CRSPE | INT_BUFREN | \
+ INT_BUFWEN | INT_CMD12DRE | INT_BUFRE | \
+ INT_DTRANE | INT_CMD12RBE | INT_CMD12CRE)
+
/* CE_INT_MASK */
#define MASK_ALL 0x00000000
#define MASK_MCCSDE (1 << 29)
MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | \
MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO)
+#define MASK_CLEAN (INT_ERR_STS | MASK_MRBSYE | MASK_MCRSPE | \
+ MASK_MBUFREN | MASK_MBUFWEN | \
+ MASK_MCMD12DRE | MASK_MBUFRE | MASK_MDTRANE | \
+ MASK_MCMD12RBE | MASK_MCMD12CRE)
+
/* CE_HOST_STS1 */
#define STS1_CMDSEQ (1 << 31)
STATE_IDLE,
STATE_REQUEST,
STATE_IOS,
+ STATE_TIMEOUT,
};
enum mmcif_wait_for {
struct clk *hclk;
unsigned int clk;
int bus_width;
+ unsigned char timing;
bool sd_error;
bool dying;
long timeout;
int sg_blkidx;
bool power;
bool card_present;
+ struct mutex thread_lock;
/* DMA support */
struct dma_chan *chan_rx;
static void mmcif_dma_complete(void *arg)
{
struct sh_mmcif_host *host = arg;
- struct mmc_data *data = host->mrq->data;
+ struct mmc_request *mrq = host->mrq;
dev_dbg(&host->pd->dev, "Command completed\n");
- if (WARN(!data, "%s: NULL data in DMA completion!\n",
+ if (WARN(!mrq || !mrq->data, "%s: NULL data in DMA completion!\n",
dev_name(&host->pd->dev)))
return;
- if (data->flags & MMC_DATA_READ)
- dma_unmap_sg(host->chan_rx->device->dev,
- data->sg, data->sg_len,
- DMA_FROM_DEVICE);
- else
- dma_unmap_sg(host->chan_tx->device->dev,
- data->sg, data->sg_len,
- DMA_TO_DEVICE);
-
complete(&host->dma_complete);
}
if (ret < 0)
goto ecfgrx;
- init_completion(&host->dma_complete);
-
return;
ecfgrx:
}
if (state2 & STS2_CRC_ERR) {
- dev_dbg(&host->pd->dev, ": CRC error\n");
+ dev_err(&host->pd->dev, " CRC error: state %u, wait %u\n",
+ host->state, host->wait_for);
ret = -EIO;
} else if (state2 & STS2_TIMEOUT_ERR) {
- dev_dbg(&host->pd->dev, ": Timeout\n");
+ dev_err(&host->pd->dev, " Timeout: state %u, wait %u\n",
+ host->state, host->wait_for);
ret = -ETIMEDOUT;
} else {
- dev_dbg(&host->pd->dev, ": End/Index error\n");
+ dev_dbg(&host->pd->dev, " End/Index error: state %u, wait %u\n",
+ host->state, host->wait_for);
ret = -EIO;
}
return ret;
host->pio_ptr = p;
}
- if (host->sg_idx == data->sg_len)
- return false;
-
- return true;
+ return host->sg_idx != data->sg_len;
}
static void sh_mmcif_single_read(struct sh_mmcif_host *host,
BLOCK_SIZE_MASK) + 3;
host->wait_for = MMCIF_WAIT_FOR_READ;
- schedule_delayed_work(&host->timeout_work, host->timeout);
/* buf read enable */
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
if (host->sd_error) {
data->error = sh_mmcif_error_manage(host);
+ dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error);
return false;
}
host->sg_idx = 0;
host->sg_blkidx = 0;
host->pio_ptr = sg_virt(data->sg);
- schedule_delayed_work(&host->timeout_work, host->timeout);
+
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
}
if (host->sd_error) {
data->error = sh_mmcif_error_manage(host);
+ dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error);
return false;
}
if (!sh_mmcif_next_block(host, p))
return false;
- schedule_delayed_work(&host->timeout_work, host->timeout);
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
return true;
BLOCK_SIZE_MASK) + 3;
host->wait_for = MMCIF_WAIT_FOR_WRITE;
- schedule_delayed_work(&host->timeout_work, host->timeout);
/* buf write enable */
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
if (host->sd_error) {
data->error = sh_mmcif_error_manage(host);
+ dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error);
return false;
}
host->sg_idx = 0;
host->sg_blkidx = 0;
host->pio_ptr = sg_virt(data->sg);
- schedule_delayed_work(&host->timeout_work, host->timeout);
+
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
}
if (host->sd_error) {
data->error = sh_mmcif_error_manage(host);
+ dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error);
return false;
}
if (!sh_mmcif_next_block(host, p))
return false;
- schedule_delayed_work(&host->timeout_work, host->timeout);
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
return true;
}
switch (opc) {
/* RBSY */
+ case MMC_SLEEP_AWAKE:
case MMC_SWITCH:
case MMC_STOP_TRANSMISSION:
case MMC_SET_WRITE_PROT:
dev_err(&host->pd->dev, "Unsupported bus width.\n");
break;
}
+ switch (host->timing) {
+ case MMC_TIMING_UHS_DDR50:
+ /*
+ * MMC core will only set this timing, if the host
+ * advertises the MMC_CAP_UHS_DDR50 capability. MMCIF
+ * implementations with this capability, e.g. sh73a0,
+ * will have to set it in their platform data.
+ */
+ tmp |= CMD_SET_DARS;
+ break;
+ }
}
/* DWEN */
if (opc == MMC_WRITE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK)
sh_mmcif_single_read(host, mrq);
return 0;
default:
- dev_err(&host->pd->dev, "UNSUPPORTED CMD = d'%08d\n", opc);
+ dev_err(&host->pd->dev, "Unsupported CMD%d\n", opc);
return -EINVAL;
}
}
switch (opc) {
/* response busy check */
+ case MMC_SLEEP_AWAKE:
case MMC_SWITCH:
case MMC_STOP_TRANSMISSION:
case MMC_SET_WRITE_PROT:
}
host->wait_for = MMCIF_WAIT_FOR_STOP;
- schedule_delayed_work(&host->timeout_work, host->timeout);
}
static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
spin_lock_irqsave(&host->lock, flags);
if (host->state != STATE_IDLE) {
+ dev_dbg(&host->pd->dev, "%s() rejected, state %u\n", __func__, host->state);
spin_unlock_irqrestore(&host->lock, flags);
mrq->cmd->error = -EAGAIN;
mmc_request_done(mmc, mrq);
if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR)
break;
case MMC_APP_CMD:
+ case SD_IO_RW_DIRECT:
host->state = STATE_IDLE;
mrq->cmd->error = -ETIMEDOUT;
mmc_request_done(mmc, mrq);
spin_lock_irqsave(&host->lock, flags);
if (host->state != STATE_IDLE) {
+ dev_dbg(&host->pd->dev, "%s() rejected, state %u\n", __func__, host->state);
spin_unlock_irqrestore(&host->lock, flags);
return;
}
}
}
if (host->power) {
- pm_runtime_put(&host->pd->dev);
+ pm_runtime_put_sync(&host->pd->dev);
clk_disable(host->hclk);
host->power = false;
if (ios->power_mode == MMC_POWER_OFF)
sh_mmcif_clock_control(host, ios->clock);
}
+ host->timing = ios->timing;
host->bus_width = ios->bus_width;
host->state = STATE_IDLE;
}
case MMC_SELECT_CARD:
case MMC_APP_CMD:
cmd->error = -ETIMEDOUT;
- host->sd_error = false;
break;
default:
cmd->error = sh_mmcif_error_manage(host);
- dev_dbg(&host->pd->dev, "Cmd(d'%d) error %d\n",
- cmd->opcode, cmd->error);
break;
}
+ dev_dbg(&host->pd->dev, "CMD%d error %d\n",
+ cmd->opcode, cmd->error);
+ host->sd_error = false;
return false;
}
if (!(cmd->flags & MMC_RSP_PRESENT)) {
if (!data)
return false;
+ /*
+ * Completion can be signalled from DMA callback and error, so, have to
+ * reset here, before setting .dma_active
+ */
+ init_completion(&host->dma_complete);
+
if (data->flags & MMC_DATA_READ) {
if (host->chan_rx)
sh_mmcif_start_dma_rx(host);
if (!host->dma_active) {
data->error = sh_mmcif_data_trans(host, host->mrq, cmd->opcode);
- if (!data->error)
- return true;
- return false;
+ return !data->error;
}
/* Running in the IRQ thread, can sleep */
time = wait_for_completion_interruptible_timeout(&host->dma_complete,
host->timeout);
+
+ if (data->flags & MMC_DATA_READ)
+ dma_unmap_sg(host->chan_rx->device->dev,
+ data->sg, data->sg_len,
+ DMA_FROM_DEVICE);
+ else
+ dma_unmap_sg(host->chan_tx->device->dev,
+ data->sg, data->sg_len,
+ DMA_TO_DEVICE);
+
if (host->sd_error) {
dev_err(host->mmc->parent,
"Error IRQ while waiting for DMA completion!\n");
/* Woken up by an error IRQ: abort DMA */
- if (data->flags & MMC_DATA_READ)
- dmaengine_terminate_all(host->chan_rx);
- else
- dmaengine_terminate_all(host->chan_tx);
data->error = sh_mmcif_error_manage(host);
} else if (!time) {
+ dev_err(host->mmc->parent, "DMA timeout!\n");
data->error = -ETIMEDOUT;
} else if (time < 0) {
+ dev_err(host->mmc->parent,
+ "wait_for_completion_...() error %ld!\n", time);
data->error = time;
}
sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC,
BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
host->dma_active = false;
- if (data->error)
+ if (data->error) {
data->bytes_xfered = 0;
+ /* Abort DMA */
+ if (data->flags & MMC_DATA_READ)
+ dmaengine_terminate_all(host->chan_rx);
+ else
+ dmaengine_terminate_all(host->chan_tx);
+ }
return false;
}
static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id)
{
struct sh_mmcif_host *host = dev_id;
- struct mmc_request *mrq = host->mrq;
+ struct mmc_request *mrq;
+ bool wait = false;
cancel_delayed_work_sync(&host->timeout_work);
+ mutex_lock(&host->thread_lock);
+
+ mrq = host->mrq;
+ if (!mrq) {
+ dev_dbg(&host->pd->dev, "IRQ thread state %u, wait %u: NULL mrq!\n",
+ host->state, host->wait_for);
+ mutex_unlock(&host->thread_lock);
+ return IRQ_HANDLED;
+ }
+
/*
* All handlers return true, if processing continues, and false, if the
* request has to be completed - successfully or not
switch (host->wait_for) {
case MMCIF_WAIT_FOR_REQUEST:
/* We're too late, the timeout has already kicked in */
+ mutex_unlock(&host->thread_lock);
return IRQ_HANDLED;
case MMCIF_WAIT_FOR_CMD:
- if (sh_mmcif_end_cmd(host))
- /* Wait for data */
- return IRQ_HANDLED;
+ /* Wait for data? */
+ wait = sh_mmcif_end_cmd(host);
break;
case MMCIF_WAIT_FOR_MREAD:
- if (sh_mmcif_mread_block(host))
- /* Wait for more data */
- return IRQ_HANDLED;
+ /* Wait for more data? */
+ wait = sh_mmcif_mread_block(host);
break;
case MMCIF_WAIT_FOR_READ:
- if (sh_mmcif_read_block(host))
- /* Wait for data end */
- return IRQ_HANDLED;
+ /* Wait for data end? */
+ wait = sh_mmcif_read_block(host);
break;
case MMCIF_WAIT_FOR_MWRITE:
- if (sh_mmcif_mwrite_block(host))
- /* Wait data to write */
- return IRQ_HANDLED;
+ /* Wait data to write? */
+ wait = sh_mmcif_mwrite_block(host);
break;
case MMCIF_WAIT_FOR_WRITE:
- if (sh_mmcif_write_block(host))
- /* Wait for data end */
- return IRQ_HANDLED;
+ /* Wait for data end? */
+ wait = sh_mmcif_write_block(host);
break;
case MMCIF_WAIT_FOR_STOP:
if (host->sd_error) {
mrq->stop->error = sh_mmcif_error_manage(host);
+ dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, mrq->stop->error);
break;
}
sh_mmcif_get_cmd12response(host, mrq->stop);
break;
case MMCIF_WAIT_FOR_READ_END:
case MMCIF_WAIT_FOR_WRITE_END:
- if (host->sd_error)
+ if (host->sd_error) {
mrq->data->error = sh_mmcif_error_manage(host);
+ dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, mrq->data->error);
+ }
break;
default:
BUG();
}
+ if (wait) {
+ schedule_delayed_work(&host->timeout_work, host->timeout);
+ /* Wait for more data */
+ mutex_unlock(&host->thread_lock);
+ return IRQ_HANDLED;
+ }
+
if (host->wait_for != MMCIF_WAIT_FOR_STOP) {
struct mmc_data *data = mrq->data;
if (!mrq->cmd->error && data && !data->error)
if (mrq->stop && !mrq->cmd->error && (!data || !data->error)) {
sh_mmcif_stop_cmd(host, mrq);
- if (!mrq->stop->error)
+ if (!mrq->stop->error) {
+ schedule_delayed_work(&host->timeout_work, host->timeout);
+ mutex_unlock(&host->thread_lock);
return IRQ_HANDLED;
+ }
}
}
host->mrq = NULL;
mmc_request_done(host->mmc, mrq);
+ mutex_unlock(&host->thread_lock);
+
return IRQ_HANDLED;
}
{
struct sh_mmcif_host *host = dev_id;
u32 state;
- int err = 0;
state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
+ sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
+ sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state & MASK_CLEAN);
- if (state & INT_ERR_STS) {
- /* error interrupts - process first */
- sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
- err = 1;
- } else if (state & INT_RBSYE) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT,
- ~(INT_RBSYE | INT_CRSPE));
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE);
- } else if (state & INT_CRSPE) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_CRSPE);
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE);
- } else if (state & INT_BUFREN) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFREN);
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
- } else if (state & INT_BUFWEN) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFWEN);
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
- } else if (state & INT_CMD12DRE) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT,
- ~(INT_CMD12DRE | INT_CMD12RBE |
- INT_CMD12CRE | INT_BUFRE));
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
- } else if (state & INT_BUFRE) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFRE);
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
- } else if (state & INT_DTRANE) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT,
- ~(INT_CMD12DRE | INT_CMD12RBE |
- INT_CMD12CRE | INT_DTRANE));
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
- } else if (state & INT_CMD12RBE) {
- sh_mmcif_writel(host->addr, MMCIF_CE_INT,
- ~(INT_CMD12RBE | INT_CMD12CRE));
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
- } else {
- dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state);
- sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
- sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
- err = 1;
- }
- if (err) {
+ if (state & ~MASK_CLEAN)
+ dev_dbg(&host->pd->dev, "IRQ state = 0x%08x incompletely cleared\n",
+ state);
+
+ if (state & INT_ERR_STS || state & ~INT_ALL) {
host->sd_error = true;
- dev_dbg(&host->pd->dev, "int err state = %08x\n", state);
+ dev_dbg(&host->pd->dev, "int err state = 0x%08x\n", state);
}
if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) {
+ if (!host->mrq)
+ dev_dbg(&host->pd->dev, "NULL IRQ state = 0x%08x\n", state);
if (!host->dma_active)
return IRQ_WAKE_THREAD;
else if (host->sd_error)
struct delayed_work *d = container_of(work, struct delayed_work, work);
struct sh_mmcif_host *host = container_of(d, struct sh_mmcif_host, timeout_work);
struct mmc_request *mrq = host->mrq;
+ unsigned long flags;
if (host->dying)
/* Don't run after mmc_remove_host() */
return;
+ dev_err(&host->pd->dev, "Timeout waiting for %u on CMD%u\n",
+ host->wait_for, mrq->cmd->opcode);
+
+ spin_lock_irqsave(&host->lock, flags);
+ if (host->state == STATE_IDLE) {
+ spin_unlock_irqrestore(&host->lock, flags);
+ return;
+ }
+
+ host->state = STATE_TIMEOUT;
+ spin_unlock_irqrestore(&host->lock, flags);
+
/*
* Handle races with cancel_delayed_work(), unless
* cancel_delayed_work_sync() is used
struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
struct resource *res;
void __iomem *reg;
+ const char *name;
irq[0] = platform_get_irq(pdev, 0);
irq[1] = platform_get_irq(pdev, 1);
- if (irq[0] < 0 || irq[1] < 0) {
+ if (irq[0] < 0) {
dev_err(&pdev->dev, "Get irq error\n");
return -ENXIO;
}
host = mmc_priv(mmc);
host->mmc = mmc;
host->addr = reg;
- host->timeout = 1000;
+ host->timeout = msecs_to_jiffies(1000);
host->pd = pdev;
mmc->ops = &sh_mmcif_ops;
sh_mmcif_init_ocr(host);
- mmc->caps = MMC_CAP_MMC_HIGHSPEED;
+ mmc->caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_WAIT_WHILE_BUSY;
if (pd && pd->caps)
mmc->caps |= pd->caps;
mmc->max_segs = 32;
sh_mmcif_sync_reset(host);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
- ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:error", host);
+ name = irq[1] < 0 ? dev_name(&pdev->dev) : "sh_mmc:error";
+ ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, name, host);
if (ret) {
- dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n");
+ dev_err(&pdev->dev, "request_irq error (%s)\n", name);
goto ereqirq0;
}
- ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:int", host);
- if (ret) {
- dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n");
- goto ereqirq1;
+ if (irq[1] >= 0) {
+ ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt,
+ 0, "sh_mmc:int", host);
+ if (ret) {
+ dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n");
+ goto ereqirq1;
+ }
}
if (pd && pd->use_cd_gpio) {
goto erqcd;
}
+ mutex_init(&host->thread_lock);
+
clk_disable(host->hclk);
ret = mmc_add_host(mmc);
if (ret < 0)
return ret;
emmcaddh:
- if (pd && pd->use_cd_gpio)
- mmc_gpio_free_cd(mmc);
erqcd:
- free_irq(irq[1], host);
+ if (irq[1] >= 0)
+ free_irq(irq[1], host);
ereqirq1:
free_irq(irq[0], host);
ereqirq0:
static int sh_mmcif_remove(struct platform_device *pdev)
{
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
- struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
int irq[2];
host->dying = true;
dev_pm_qos_hide_latency_limit(&pdev->dev);
- if (pd && pd->use_cd_gpio)
- mmc_gpio_free_cd(host->mmc);
-
mmc_remove_host(host->mmc);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
irq[1] = platform_get_irq(pdev, 1);
free_irq(irq[0], host);
- free_irq(irq[1], host);
+ if (irq[1] >= 0)
+ free_irq(irq[1], host);
platform_set_drvdata(pdev, NULL);
void tmio_mmc_host_remove(struct tmio_mmc_host *host)
{
struct platform_device *pdev = host->pdev;
- struct tmio_mmc_data *pdata = host->pdata;
struct mmc_host *mmc = host->mmc;
- if (pdata->flags & TMIO_MMC_USE_GPIO_CD)
- /*
- * This means we can miss a card-eject, but this is anyway
- * possible, because of delayed processing of hotplug events.
- */
- mmc_gpio_free_cd(mmc);
-
if (!host->native_hotplug)
pm_runtime_get_sync(&pdev->dev);
#define SDIO_MAX_FUNCS 7
+enum mmc_blk_status {
+ MMC_BLK_SUCCESS = 0,
+ MMC_BLK_PARTIAL,
+ MMC_BLK_CMD_ERR,
+ MMC_BLK_RETRY,
+ MMC_BLK_ABORT,
+ MMC_BLK_DATA_ERR,
+ MMC_BLK_ECC_ERR,
+ MMC_BLK_NOMEDIUM,
+ MMC_BLK_NEW_REQUEST,
+};
+
/* The number of MMC physical partitions. These consist of:
* boot partitions (2), general purpose partitions (4) in MMC v4.4.
*/
s32 host_cookie; /* host private data */
};
+struct mmc_host;
struct mmc_request {
struct mmc_command *sbc; /* SET_BLOCK_COUNT for multiblock */
struct mmc_command *cmd;
struct completion completion;
void (*done)(struct mmc_request *);/* completion function */
+ struct mmc_host *host;
};
-struct mmc_host;
struct mmc_card;
struct mmc_async_req;
void *handler_priv;
};
+/**
+ * mmc_context_info - synchronization details for mmc context
+ * @is_done_rcv wake up reason was done request
+ * @is_new_req wake up reason was new request
+ * @is_waiting_last_req mmc context waiting for single running request
+ * @wait wait queue
+ * @lock lock to protect data fields
+ */
+struct mmc_context_info {
+ bool is_done_rcv;
+ bool is_new_req;
+ bool is_waiting_last_req;
+ wait_queue_head_t wait;
+ spinlock_t lock;
+};
+
struct regulator;
struct mmc_supply {
struct dentry *debugfs_root;
struct mmc_async_req *areq; /* active async req */
+ struct mmc_context_info context_info; /* async synchronization info */
#ifdef CONFIG_FAIL_MMC_REQUEST
struct fault_attr fail_mmc_request;
return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
}
+static inline int mmc_host_uhs(struct mmc_host *host)
+{
+ return host->caps &
+ (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
+ MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
+ MMC_CAP_UHS_DDR50);
+}
+
#ifdef CONFIG_MMC_CLKGATE
void mmc_host_clk_hold(struct mmc_host *host);
void mmc_host_clk_release(struct mmc_host *host);
projects / firefly-linux-kernel-4.4.55.git / commitdiff