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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-06 09:48:31 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-06 09:48:31 -0700
commitc87985a3ce723995fc7b25e598238d67154108a1 (patch)
treee60def1b77c25c1d74180f62e8a5603f9826f209 /drivers/mmc
parentd155255a344c417acad74156654295a2964e6b81 (diff)
parent0d7614f09c1ebdbaa1599a5aba7593f147bf96ee (diff)
downloadlinux-linaro-stable-c87985a3ce723995fc7b25e598238d67154108a1.tar.gz
Merge tty-next into 3.6-rc1
This handles the merge issue in: arch/um/drivers/line.c arch/um/drivers/line.h And resolves the duplicate patches that were in both trees do to the tty-next branch not getting merged into 3.6-rc1. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/card/block.c36
-rw-r--r--drivers/mmc/core/Makefile2
-rw-r--r--drivers/mmc/core/cd-gpio.c83
-rw-r--r--drivers/mmc/core/core.c90
-rw-r--r--drivers/mmc/core/host.c6
-rw-r--r--drivers/mmc/core/mmc.c3
-rw-r--r--drivers/mmc/core/mmc_ops.c1
-rw-r--r--drivers/mmc/core/sd.c171
-rw-r--r--drivers/mmc/core/sdio.c7
-rw-r--r--drivers/mmc/core/sdio_cis.c2
-rw-r--r--drivers/mmc/core/slot-gpio.c188
-rw-r--r--drivers/mmc/host/atmel-mci.c14
-rw-r--r--drivers/mmc/host/dw_mmc.c17
-rw-r--r--drivers/mmc/host/mvsdio.c4
-rw-r--r--drivers/mmc/host/mxs-mmc.c26
-rw-r--r--drivers/mmc/host/omap.c368
-rw-r--r--drivers/mmc/host/omap_hsmmc.c220
-rw-r--r--drivers/mmc/host/s3cmci.c10
-rw-r--r--drivers/mmc/host/sdhci-dove.c51
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c9
-rw-r--r--drivers/mmc/host/sdhci-pci.c1
-rw-r--r--drivers/mmc/host/sdhci-pxav2.c54
-rw-r--r--drivers/mmc/host/sdhci-pxav3.c52
-rw-r--r--drivers/mmc/host/sdhci-tegra.c11
-rw-r--r--drivers/mmc/host/sdhci.c144
-rw-r--r--drivers/mmc/host/sdhci.h1
-rw-r--r--drivers/mmc/host/sh_mmcif.c273
-rw-r--r--drivers/mmc/host/sh_mobile_sdhi.c74
-rw-r--r--drivers/mmc/host/tmio_mmc_pio.c132
29 files changed, 1253 insertions, 797 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 276d21ce6bc1..f1c84decb192 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -850,9 +850,7 @@ out:
goto retry;
if (!err)
mmc_blk_reset_success(md, type);
- spin_lock_irq(&md->lock);
- __blk_end_request(req, err, blk_rq_bytes(req));
- spin_unlock_irq(&md->lock);
+ blk_end_request(req, err, blk_rq_bytes(req));
return err ? 0 : 1;
}
@@ -934,9 +932,7 @@ out_retry:
if (!err)
mmc_blk_reset_success(md, type);
out:
- spin_lock_irq(&md->lock);
- __blk_end_request(req, err, blk_rq_bytes(req));
- spin_unlock_irq(&md->lock);
+ blk_end_request(req, err, blk_rq_bytes(req));
return err ? 0 : 1;
}
@@ -951,9 +947,7 @@ static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req)
if (ret)
ret = -EIO;
- spin_lock_irq(&md->lock);
- __blk_end_request_all(req, ret);
- spin_unlock_irq(&md->lock);
+ blk_end_request_all(req, ret);
return ret ? 0 : 1;
}
@@ -1252,14 +1246,10 @@ static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card,
blocks = mmc_sd_num_wr_blocks(card);
if (blocks != (u32)-1) {
- spin_lock_irq(&md->lock);
- ret = __blk_end_request(req, 0, blocks << 9);
- spin_unlock_irq(&md->lock);
+ ret = blk_end_request(req, 0, blocks << 9);
}
} else {
- spin_lock_irq(&md->lock);
- ret = __blk_end_request(req, 0, brq->data.bytes_xfered);
- spin_unlock_irq(&md->lock);
+ ret = blk_end_request(req, 0, brq->data.bytes_xfered);
}
return ret;
}
@@ -1311,10 +1301,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
* A block was successfully transferred.
*/
mmc_blk_reset_success(md, type);
- spin_lock_irq(&md->lock);
- ret = __blk_end_request(req, 0,
+ ret = blk_end_request(req, 0,
brq->data.bytes_xfered);
- spin_unlock_irq(&md->lock);
/*
* If the blk_end_request function returns non-zero even
* though all data has been transferred and no errors
@@ -1364,10 +1352,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
* time, so we only reach here after trying to
* read a single sector.
*/
- spin_lock_irq(&md->lock);
- ret = __blk_end_request(req, -EIO,
+ ret = blk_end_request(req, -EIO,
brq->data.blksz);
- spin_unlock_irq(&md->lock);
if (!ret)
goto start_new_req;
break;
@@ -1388,12 +1374,10 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
return 1;
cmd_abort:
- spin_lock_irq(&md->lock);
if (mmc_card_removed(card))
req->cmd_flags |= REQ_QUIET;
while (ret)
- ret = __blk_end_request(req, -EIO, blk_rq_cur_bytes(req));
- spin_unlock_irq(&md->lock);
+ ret = blk_end_request(req, -EIO, blk_rq_cur_bytes(req));
start_new_req:
if (rqc) {
@@ -1417,9 +1401,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
ret = mmc_blk_part_switch(card, md);
if (ret) {
if (req) {
- spin_lock_irq(&md->lock);
- __blk_end_request_all(req, -EIO);
- spin_unlock_irq(&md->lock);
+ blk_end_request_all(req, -EIO);
}
ret = 0;
goto out;
diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile
index dca4428380f1..38ed210ce2f3 100644
--- a/drivers/mmc/core/Makefile
+++ b/drivers/mmc/core/Makefile
@@ -7,6 +7,6 @@ mmc_core-y := core.o bus.o host.o \
mmc.o mmc_ops.o sd.o sd_ops.o \
sdio.o sdio_ops.o sdio_bus.o \
sdio_cis.o sdio_io.o sdio_irq.o \
- quirks.o cd-gpio.o
+ quirks.o slot-gpio.o
mmc_core-$(CONFIG_DEBUG_FS) += debugfs.o
diff --git a/drivers/mmc/core/cd-gpio.c b/drivers/mmc/core/cd-gpio.c
deleted file mode 100644
index 8f5dc08d6598..000000000000
--- a/drivers/mmc/core/cd-gpio.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Generic GPIO card-detect helper
- *
- * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/interrupt.h>
-#include <linux/jiffies.h>
-#include <linux/mmc/cd-gpio.h>
-#include <linux/mmc/host.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-
-struct mmc_cd_gpio {
- unsigned int gpio;
- char label[0];
-};
-
-static irqreturn_t mmc_cd_gpio_irqt(int irq, void *dev_id)
-{
- /* Schedule a card detection after a debounce timeout */
- mmc_detect_change(dev_id, msecs_to_jiffies(100));
- return IRQ_HANDLED;
-}
-
-int mmc_cd_gpio_request(struct mmc_host *host, unsigned int gpio)
-{
- size_t len = strlen(dev_name(host->parent)) + 4;
- struct mmc_cd_gpio *cd;
- int irq = gpio_to_irq(gpio);
- int ret;
-
- if (irq < 0)
- return irq;
-
- cd = kmalloc(sizeof(*cd) + len, GFP_KERNEL);
- if (!cd)
- return -ENOMEM;
-
- snprintf(cd->label, len, "%s cd", dev_name(host->parent));
-
- ret = gpio_request_one(gpio, GPIOF_DIR_IN, cd->label);
- if (ret < 0)
- goto egpioreq;
-
- ret = request_threaded_irq(irq, NULL, mmc_cd_gpio_irqt,
- IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
- IRQF_ONESHOT, cd->label, host);
- if (ret < 0)
- goto eirqreq;
-
- cd->gpio = gpio;
- host->hotplug.irq = irq;
- host->hotplug.handler_priv = cd;
-
- return 0;
-
-eirqreq:
- gpio_free(gpio);
-egpioreq:
- kfree(cd);
- return ret;
-}
-EXPORT_SYMBOL(mmc_cd_gpio_request);
-
-void mmc_cd_gpio_free(struct mmc_host *host)
-{
- struct mmc_cd_gpio *cd = host->hotplug.handler_priv;
-
- if (!cd)
- return;
-
- free_irq(host->hotplug.irq, host);
- gpio_free(cd->gpio);
- kfree(cd);
-}
-EXPORT_SYMBOL(mmc_cd_gpio_free);
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 0b6141d29dbd..8ac5246e2ab2 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -404,6 +404,7 @@ int mmc_interrupt_hpi(struct mmc_card *card)
{
int err;
u32 status;
+ unsigned long prg_wait;
BUG_ON(!card);
@@ -419,30 +420,38 @@ int mmc_interrupt_hpi(struct mmc_card *card)
goto out;
}
- /*
- * If the card status is in PRG-state, we can send the HPI command.
- */
- if (R1_CURRENT_STATE(status) == R1_STATE_PRG) {
- do {
- /*
- * We don't know when the HPI command will finish
- * processing, so we need to resend HPI until out
- * of prg-state, and keep checking the card status
- * with SEND_STATUS. If a timeout error occurs when
- * sending the HPI command, we are already out of
- * prg-state.
- */
- err = mmc_send_hpi_cmd(card, &status);
- if (err)
- pr_debug("%s: abort HPI (%d error)\n",
- mmc_hostname(card->host), err);
+ switch (R1_CURRENT_STATE(status)) {
+ case R1_STATE_IDLE:
+ case R1_STATE_READY:
+ case R1_STATE_STBY:
+ /*
+ * In idle states, HPI is not needed and the caller
+ * can issue the next intended command immediately
+ */
+ goto out;
+ case R1_STATE_PRG:
+ break;
+ default:
+ /* In all other states, it's illegal to issue HPI */
+ pr_debug("%s: HPI cannot be sent. Card state=%d\n",
+ mmc_hostname(card->host), R1_CURRENT_STATE(status));
+ err = -EINVAL;
+ goto out;
+ }
- err = mmc_send_status(card, &status);
- if (err)
- break;
- } while (R1_CURRENT_STATE(status) == R1_STATE_PRG);
- } else
- pr_debug("%s: Left prg-state\n", mmc_hostname(card->host));
+ err = mmc_send_hpi_cmd(card, &status);
+ if (err)
+ goto out;
+
+ prg_wait = jiffies + msecs_to_jiffies(card->ext_csd.out_of_int_time);
+ do {
+ err = mmc_send_status(card, &status);
+
+ if (!err && R1_CURRENT_STATE(status) == R1_STATE_TRAN)
+ break;
+ if (time_after(jiffies, prg_wait))
+ err = -ETIMEDOUT;
+ } while (!err);
out:
mmc_release_host(card->host);
@@ -941,7 +950,7 @@ int mmc_regulator_get_ocrmask(struct regulator *supply)
return result;
}
-EXPORT_SYMBOL(mmc_regulator_get_ocrmask);
+EXPORT_SYMBOL_GPL(mmc_regulator_get_ocrmask);
/**
* mmc_regulator_set_ocr - set regulator to match host->ios voltage
@@ -1011,7 +1020,30 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc,
"could not set regulator OCR (%d)\n", result);
return result;
}
-EXPORT_SYMBOL(mmc_regulator_set_ocr);
+EXPORT_SYMBOL_GPL(mmc_regulator_set_ocr);
+
+int mmc_regulator_get_supply(struct mmc_host *mmc)
+{
+ struct device *dev = mmc_dev(mmc);
+ struct regulator *supply;
+ int ret;
+
+ supply = devm_regulator_get(dev, "vmmc");
+ mmc->supply.vmmc = supply;
+ mmc->supply.vqmmc = devm_regulator_get(dev, "vqmmc");
+
+ if (IS_ERR(supply))
+ return PTR_ERR(supply);
+
+ ret = mmc_regulator_get_ocrmask(supply);
+ if (ret > 0)
+ mmc->ocr_avail = ret;
+ else
+ dev_warn(mmc_dev(mmc), "Failed getting OCR mask: %d\n", ret);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mmc_regulator_get_supply);
#endif /* CONFIG_REGULATOR */
@@ -1180,6 +1212,9 @@ static void mmc_power_up(struct mmc_host *host)
host->ios.timing = MMC_TIMING_LEGACY;
mmc_set_ios(host);
+ /* Set signal voltage to 3.3V */
+ mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false);
+
/*
* This delay should be sufficient to allow the power supply
* to reach the minimum voltage.
@@ -1931,9 +1966,6 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
*/
mmc_hw_reset_for_init(host);
- /* Initialization should be done at 3.3 V I/O voltage. */
- mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
-
/*
* sdio_reset sends CMD52 to reset card. Since we do not know
* if the card is being re-initialized, just send it. CMD52
@@ -2075,6 +2107,7 @@ void mmc_rescan(struct work_struct *work)
void mmc_start_host(struct mmc_host *host)
{
host->f_init = max(freqs[0], host->f_min);
+ host->rescan_disable = 0;
mmc_power_up(host);
mmc_detect_change(host, 0);
}
@@ -2088,6 +2121,7 @@ void mmc_stop_host(struct mmc_host *host)
spin_unlock_irqrestore(&host->lock, flags);
#endif
+ host->rescan_disable = 1;
cancel_delayed_work_sync(&host->detect);
mmc_flush_scheduled_work();
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 91c84c7a1829..597f189b4427 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -32,6 +32,7 @@
static void mmc_host_classdev_release(struct device *dev)
{
struct mmc_host *host = cls_dev_to_mmc_host(dev);
+ mutex_destroy(&host->slot.lock);
kfree(host);
}
@@ -312,6 +313,8 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
if (!host)
return NULL;
+ /* scanning will be enabled when we're ready */
+ host->rescan_disable = 1;
spin_lock(&mmc_host_lock);
err = idr_get_new(&mmc_host_idr, host, &host->index);
spin_unlock(&mmc_host_lock);
@@ -327,6 +330,9 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
mmc_host_clk_init(host);
+ mutex_init(&host->slot.lock);
+ host->slot.cd_irq = -EINVAL;
+
spin_lock_init(&host->lock);
init_waitqueue_head(&host->wq);
INIT_DELAYED_WORK(&host->detect, mmc_rescan);
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 4f4489aa6bae..396b25891bb9 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -818,9 +818,6 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (!mmc_host_is_spi(host))
mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
- /* Initialization should be done at 3.3 V I/O voltage. */
- mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
-
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 69370f494e05..0ed2cc5f35b6 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -569,7 +569,6 @@ int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status)
cmd.opcode = opcode;
cmd.arg = card->rca << 16 | 1;
- cmd.cmd_timeout_ms = card->ext_csd.out_of_int_time;
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err) {
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index b2b43f624b9e..74972c241dff 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -244,7 +244,7 @@ static int mmc_read_ssr(struct mmc_card *card)
* bitfield positions accordingly.
*/
au = UNSTUFF_BITS(ssr, 428 - 384, 4);
- if (au > 0 || au <= 9) {
+ if (au > 0 && au <= 9) {
card->ssr.au = 1 << (au + 4);
es = UNSTUFF_BITS(ssr, 408 - 384, 16);
et = UNSTUFF_BITS(ssr, 402 - 384, 6);
@@ -290,8 +290,12 @@ static int mmc_read_switch(struct mmc_card *card)
return -ENOMEM;
}
- /* Find out the supported Bus Speed Modes. */
- err = mmc_sd_switch(card, 0, 0, 1, status);
+ /*
+ * Find out the card's support bits with a mode 0 operation.
+ * The argument does not matter, as the support bits do not
+ * change with the arguments.
+ */
+ err = mmc_sd_switch(card, 0, 0, 0, status);
if (err) {
/*
* If the host or the card can't do the switch,
@@ -312,46 +316,8 @@ static int mmc_read_switch(struct mmc_card *card)
if (card->scr.sda_spec3) {
card->sw_caps.sd3_bus_mode = status[13];
-
- /* Find out Driver Strengths supported by the card */
- err = mmc_sd_switch(card, 0, 2, 1, status);
- if (err) {
- /*
- * If the host or the card can't do the switch,
- * fail more gracefully.
- */
- if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
- goto out;
-
- pr_warning("%s: problem reading "
- "Driver Strength.\n",
- mmc_hostname(card->host));
- err = 0;
-
- goto out;
- }
-
+ /* Driver Strengths supported by the card */
card->sw_caps.sd3_drv_type = status[9];
-
- /* Find out Current Limits supported by the card */
- err = mmc_sd_switch(card, 0, 3, 1, status);
- if (err) {
- /*
- * If the host or the card can't do the switch,
- * fail more gracefully.
- */
- if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
- goto out;
-
- pr_warning("%s: problem reading "
- "Current Limit.\n",
- mmc_hostname(card->host));
- err = 0;
-
- goto out;
- }
-
- card->sw_caps.sd3_curr_limit = status[7];
}
out:
@@ -551,60 +517,80 @@ static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status)
return 0;
}
+/* Get host's max current setting at its current voltage */
+static u32 sd_get_host_max_current(struct mmc_host *host)
+{
+ u32 voltage, max_current;
+
+ voltage = 1 << host->ios.vdd;
+ switch (voltage) {
+ case MMC_VDD_165_195:
+ max_current = host->max_current_180;
+ break;
+ case MMC_VDD_29_30:
+ case MMC_VDD_30_31:
+ max_current = host->max_current_300;
+ break;
+ case MMC_VDD_32_33:
+ case MMC_VDD_33_34:
+ max_current = host->max_current_330;
+ break;
+ default:
+ max_current = 0;
+ }
+
+ return max_current;
+}
+
static int sd_set_current_limit(struct mmc_card *card, u8 *status)
{
- int current_limit = 0;
+ int current_limit = SD_SET_CURRENT_NO_CHANGE;
int err;
+ u32 max_current;
/*
* Current limit switch is only defined for SDR50, SDR104, and DDR50
- * bus speed modes. For other bus speed modes, we set the default
- * current limit of 200mA.
+ * bus speed modes. For other bus speed modes, we do not change the
+ * current limit.
*/
- if ((card->sd_bus_speed == UHS_SDR50_BUS_SPEED) ||
- (card->sd_bus_speed == UHS_SDR104_BUS_SPEED) ||
- (card->sd_bus_speed == UHS_DDR50_BUS_SPEED)) {
- if (card->host->caps & MMC_CAP_MAX_CURRENT_800) {
- if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800)
- current_limit = SD_SET_CURRENT_LIMIT_800;
- else if (card->sw_caps.sd3_curr_limit &
- SD_MAX_CURRENT_600)
- current_limit = SD_SET_CURRENT_LIMIT_600;
- else if (card->sw_caps.sd3_curr_limit &
- SD_MAX_CURRENT_400)
- current_limit = SD_SET_CURRENT_LIMIT_400;
- else if (card->sw_caps.sd3_curr_limit &
- SD_MAX_CURRENT_200)
- current_limit = SD_SET_CURRENT_LIMIT_200;
- } else if (card->host->caps & MMC_CAP_MAX_CURRENT_600) {
- if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600)
- current_limit = SD_SET_CURRENT_LIMIT_600;
- else if (card->sw_caps.sd3_curr_limit &
- SD_MAX_CURRENT_400)
- current_limit = SD_SET_CURRENT_LIMIT_400;
- else if (card->sw_caps.sd3_curr_limit &
- SD_MAX_CURRENT_200)
- current_limit = SD_SET_CURRENT_LIMIT_200;
- } else if (card->host->caps & MMC_CAP_MAX_CURRENT_400) {
- if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400)
- current_limit = SD_SET_CURRENT_LIMIT_400;
- else if (card->sw_caps.sd3_curr_limit &
- SD_MAX_CURRENT_200)
- current_limit = SD_SET_CURRENT_LIMIT_200;
- } else if (card->host->caps & MMC_CAP_MAX_CURRENT_200) {
- if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200)
- current_limit = SD_SET_CURRENT_LIMIT_200;
- }
- } else
+ if ((card->sd_bus_speed != UHS_SDR50_BUS_SPEED) &&
+ (card->sd_bus_speed != UHS_SDR104_BUS_SPEED) &&
+ (card->sd_bus_speed != UHS_DDR50_BUS_SPEED))
+ return 0;
+
+ /*
+ * Host has different current capabilities when operating at
+ * different voltages, so find out its max current first.
+ */
+ max_current = sd_get_host_max_current(card->host);
+
+ /*
+ * We only check host's capability here, if we set a limit that is
+ * higher than the card's maximum current, the card will be using its
+ * maximum current, e.g. if the card's maximum current is 300ma, and
+ * when we set current limit to 200ma, the card will draw 200ma, and
+ * when we set current limit to 400/600/800ma, the card will draw its
+ * maximum 300ma from the host.
+ */
+ if (max_current >= 800)
+ current_limit = SD_SET_CURRENT_LIMIT_800;
+ else if (max_current >= 600)
+ current_limit = SD_SET_CURRENT_LIMIT_600;
+ else if (max_current >= 400)
+ current_limit = SD_SET_CURRENT_LIMIT_400;
+ else if (max_current >= 200)
current_limit = SD_SET_CURRENT_LIMIT_200;
- err = mmc_sd_switch(card, 1, 3, current_limit, status);
- if (err)
- return err;
+ if (current_limit != SD_SET_CURRENT_NO_CHANGE) {
+ err = mmc_sd_switch(card, 1, 3, current_limit, status);
+ if (err)
+ return err;
- if (((status[15] >> 4) & 0x0F) != current_limit)
- pr_warning("%s: Problem setting current limit!\n",
- mmc_hostname(card->host));
+ if (((status[15] >> 4) & 0x0F) != current_limit)
+ pr_warning("%s: Problem setting current limit!\n",
+ mmc_hostname(card->host));
+
+ }
return 0;
}
@@ -726,6 +712,7 @@ struct device_type sd_type = {
int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr)
{
int err;
+ u32 max_current;
/*
* Since we're changing the OCR value, we seem to
@@ -753,9 +740,12 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr)
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))
ocr |= SD_OCR_S18R;
- /* If the host can supply more than 150mA, XPC should be set to 1. */
- if (host->caps & (MMC_CAP_SET_XPC_330 | MMC_CAP_SET_XPC_300 |
- MMC_CAP_SET_XPC_180))
+ /*
+ * If the host can supply more than 150mA at current voltage,
+ * XPC should be set to 1.
+ */
+ max_current = sd_get_host_max_current(host);
+ if (max_current > 150)
ocr |= SD_OCR_XPC;
try_again:
@@ -911,9 +901,6 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
BUG_ON(!host);
WARN_ON(!host->claimed);
- /* The initialization should be done at 3.3 V I/O voltage. */
- mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
-
err = mmc_sd_get_cid(host, ocr, cid, &rocr);
if (err)
return err;
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 41c5fd8848f4..d4619e2ec030 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -591,9 +591,6 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
* Inform the card of the voltage
*/
if (!powered_resume) {
- /* The initialization should be done at 3.3 V I/O voltage. */
- mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
-
err = mmc_send_io_op_cond(host, host->ocr, &ocr);
if (err)
goto err;
@@ -1006,10 +1003,6 @@ static int mmc_sdio_power_restore(struct mmc_host *host)
* restore the correct voltage setting of the card.
*/
- /* The initialization should be done at 3.3 V I/O voltage. */
- if (!mmc_card_keep_power(host))
- mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
-
sdio_reset(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index f1c7ed8f4d85..8e94e555b788 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -313,7 +313,7 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
if (ret == -ENOENT) {
/* warn about unknown tuples */
- pr_warning("%s: queuing unknown"
+ pr_warn_ratelimited("%s: queuing unknown"
" CIS tuple 0x%02x (%u bytes)\n",
mmc_hostname(card->host),
tpl_code, tpl_link);
diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c
new file mode 100644
index 000000000000..058242916cef
--- /dev/null
+++ b/drivers/mmc/core/slot-gpio.c
@@ -0,0 +1,188 @@
+/*
+ * Generic GPIO card-detect helper
+ *
+ * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/slot-gpio.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+struct mmc_gpio {
+ int ro_gpio;
+ int cd_gpio;
+ char *ro_label;
+ char cd_label[0];
+};
+
+static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id)
+{
+ /* Schedule a card detection after a debounce timeout */
+ mmc_detect_change(dev_id, msecs_to_jiffies(100));
+ return IRQ_HANDLED;
+}
+
+static int mmc_gpio_alloc(struct mmc_host *host)
+{
+ size_t len = strlen(dev_name(host->parent)) + 4;
+ struct mmc_gpio *ctx;
+
+ mutex_lock(&host->slot.lock);
+
+ ctx = host->slot.handler_priv;
+ if (!ctx) {
+ /*
+ * devm_kzalloc() can be called after device_initialize(), even
+ * before device_add(), i.e., between mmc_alloc_host() and
+ * mmc_add_host()
+ */
+ ctx = devm_kzalloc(&host->class_dev, sizeof(*ctx) + 2 * len,
+ GFP_KERNEL);
+ if (ctx) {
+ ctx->ro_label = ctx->cd_label + len;
+ snprintf(ctx->cd_label, len, "%s cd", dev_name(host->parent));
+ snprintf(ctx->ro_label, len, "%s ro", dev_name(host->parent));
+ ctx->cd_gpio = -EINVAL;
+ ctx->ro_gpio = -EINVAL;
+ host->slot.handler_priv = ctx;
+ }
+ }
+
+ mutex_unlock(&host->slot.lock);
+
+ return ctx ? 0 : -ENOMEM;
+}
+
+int mmc_gpio_get_ro(struct mmc_host *host)
+{
+ struct mmc_gpio *ctx = host->slot.handler_priv;
+
+ if (!ctx || !gpio_is_valid(ctx->ro_gpio))
+ return -ENOSYS;
+
+ return !gpio_get_value_cansleep(ctx->ro_gpio) ^
+ !!(host->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);
+}
+EXPORT_SYMBOL(mmc_gpio_get_ro);
+
+int mmc_gpio_get_cd(struct mmc_host *host)
+{
+ struct mmc_gpio *ctx = host->slot.handler_priv;
+
+ if (!ctx || !gpio_is_valid(ctx->cd_gpio))
+ return -ENOSYS;
+
+ return !gpio_get_value_cansleep(ctx->cd_gpio) ^
+ !!(host->caps2 & MMC_CAP2_CD_ACTIVE_HIGH);
+}
+EXPORT_SYMBOL(mmc_gpio_get_cd);
+
+int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio)
+{
+ struct mmc_gpio *ctx;
+ int ret;
+
+ if (!gpio_is_valid(gpio))
+ return -EINVAL;
+
+ ret = mmc_gpio_alloc(host);
+ if (ret < 0)
+ return ret;
+
+ ctx = host->slot.handler_priv;
+
+ return gpio_request_one(gpio, GPIOF_DIR_IN, ctx->ro_label);
+}
+EXPORT_SYMBOL(mmc_gpio_request_ro);
+
+int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio)
+{
+ struct mmc_gpio *ctx;
+ int irq = gpio_to_irq(gpio);
+ int ret;
+
+ ret = mmc_gpio_alloc(host);
+ if (ret < 0)
+ return ret;
+
+ ctx = host->slot.handler_priv;
+
+ ret = gpio_request_one(gpio, GPIOF_DIR_IN, ctx->cd_label);
+ if (ret < 0)
+ /*
+ * don't bother freeing memory. It might still get used by other
+ * slot functions, in any case it will be freed, when the device
+ * is destroyed.
+ */
+ return ret;
+
+ /*
+ * Even if gpio_to_irq() returns a valid IRQ number, the platform might
+ * still prefer to poll, e.g., because that IRQ number is already used
+ * by another unit and cannot be shared.
+ */
+ if (irq >= 0 && host->caps & MMC_CAP_NEEDS_POLL)
+ irq = -EINVAL;
+
+ if (irq >= 0) {
+ ret = request_threaded_irq(irq, NULL, mmc_gpio_cd_irqt,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ ctx->cd_label, host);
+ if (ret < 0)
+ irq = ret;
+ }
+
+ host->slot.cd_irq = irq;
+
+ if (irq < 0)
+ host->caps |= MMC_CAP_NEEDS_POLL;
+
+ ctx->cd_gpio = gpio;
+
+ return 0;
+}
+EXPORT_SYMBOL(mmc_gpio_request_cd);
+
+void mmc_gpio_free_ro(struct mmc_host *host)
+{
+ struct mmc_gpio *ctx = host->slot.handler_priv;
+ int gpio;
+
+ if (!ctx || !gpio_is_valid(ctx->ro_gpio))
+ return;
+
+ gpio = ctx->ro_gpio;
+ ctx->ro_gpio = -EINVAL;
+
+ gpio_free(gpio);
+}
+EXPORT_SYMBOL(mmc_gpio_free_ro);
+
+void mmc_gpio_free_cd(struct mmc_host *host)
+{
+ struct mmc_gpio *ctx = host->slot.handler_priv;
+ int gpio;
+
+ if (!ctx || !gpio_is_valid(ctx->cd_gpio))
+ return;
+
+ if (host->slot.cd_irq >= 0) {
+ free_irq(host->slot.cd_irq, host);
+ host->slot.cd_irq = -EINVAL;
+ }
+
+ gpio = ctx->cd_gpio;
+ ctx->cd_gpio = -EINVAL;
+
+ gpio_free(gpio);
+}
+EXPORT_SYMBOL(mmc_gpio_free_cd);
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index f2c115e06438..322412cec4ee 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -391,11 +391,17 @@ static int atmci_regs_show(struct seq_file *s, void *v)
clk_disable(host->mck);
spin_unlock_bh(&host->lock);
- seq_printf(s, "MR:\t0x%08x%s%s CLKDIV=%u\n",
+ seq_printf(s, "MR:\t0x%08x%s%s ",
buf[ATMCI_MR / 4],
buf[ATMCI_MR / 4] & ATMCI_MR_RDPROOF ? " RDPROOF" : "",
- buf[ATMCI_MR / 4] & ATMCI_MR_WRPROOF ? " WRPROOF" : "",
- buf[ATMCI_MR / 4] & 0xff);
+ buf[ATMCI_MR / 4] & ATMCI_MR_WRPROOF ? " WRPROOF" : "");
+ if (host->caps.has_odd_clk_div)
+ seq_printf(s, "{CLKDIV,CLKODD}=%u\n",
+ ((buf[ATMCI_MR / 4] & 0xff) << 1)
+ | ((buf[ATMCI_MR / 4] >> 16) & 1));
+ else
+ seq_printf(s, "CLKDIV=%u\n",
+ (buf[ATMCI_MR / 4] & 0xff));
seq_printf(s, "DTOR:\t0x%08x\n", buf[ATMCI_DTOR / 4]);
seq_printf(s, "SDCR:\t0x%08x\n", buf[ATMCI_SDCR / 4]);
seq_printf(s, "ARGR:\t0x%08x\n", buf[ATMCI_ARGR / 4]);
@@ -1685,7 +1691,6 @@ static void atmci_tasklet_func(unsigned long priv)
dev_dbg(&host->pdev->dev, "FSM: cmd ready\n");
host->cmd = NULL;
- host->data = NULL;
data->bytes_xfered = data->blocks * data->blksz;
data->error = 0;
atmci_command_complete(host, mrq->stop);
@@ -1699,6 +1704,7 @@ static void atmci_tasklet_func(unsigned long priv)
atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
state = STATE_WAITING_NOTBUSY;
}
+ host->data = NULL;
break;
case STATE_END_REQUEST:
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 1ca5e72ceb65..72dc3cde646d 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -405,11 +405,23 @@ static void dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len)
static int dw_mci_idmac_init(struct dw_mci *host)
{
struct idmac_desc *p;
- int i;
+ int i, dma_support;
/* Number of descriptors in the ring buffer */
host->ring_size = PAGE_SIZE / sizeof(struct idmac_desc);
+ /* Check if Hardware Configuration Register has support for DMA */
+ dma_support = (mci_readl(host, HCON) >> 16) & 0x3;
+
+ if (!dma_support || dma_support > 2) {
+ dev_err(&host->dev,
+ "Host Controller does not support IDMA Tx.\n");
+ host->dma_ops = NULL;
+ return -ENODEV;
+ }
+
+ dev_info(&host->dev, "Using internal DMA controller.\n");
+
/* Forward link the descriptor list */
for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++)
p->des3 = host->sg_dma + (sizeof(struct idmac_desc) * (i + 1));
@@ -1876,7 +1888,6 @@ static void dw_mci_init_dma(struct dw_mci *host)
/* Determine which DMA interface to use */
#ifdef CONFIG_MMC_DW_IDMAC
host->dma_ops = &dw_mci_idmac_ops;
- dev_info(&host->dev, "Using internal DMA controller.\n");
#endif
if (!host->dma_ops)
@@ -2175,7 +2186,7 @@ int dw_mci_resume(struct dw_mci *host)
return ret;
}
- if (host->dma_ops->init)
+ if (host->use_dma && host->dma_ops->init)
host->dma_ops->init(host);
/* Restore the old value at FIFOTH register */
diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index 3b9136c1a475..a61cb5fca22d 100644
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -839,6 +839,10 @@ out:
if (r)
release_resource(r);
if (mmc)
+ if (!IS_ERR_OR_NULL(host->clk)) {
+ clk_disable_unprepare(host->clk);
+ clk_put(host->clk);
+ }
mmc_free_host(mmc);
return ret;
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 277161d279b8..a51f9309ffbb 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -164,16 +164,23 @@ struct mxs_mmc_host {
spinlock_t lock;
int sdio_irq_en;
int wp_gpio;
+ bool wp_inverted;
};
static int mxs_mmc_get_ro(struct mmc_host *mmc)
{
struct mxs_mmc_host *host = mmc_priv(mmc);
+ int ret;
if (!gpio_is_valid(host->wp_gpio))
return -EINVAL;
- return gpio_get_value(host->wp_gpio);
+ ret = gpio_get_value(host->wp_gpio);
+
+ if (host->wp_inverted)
+ ret = !ret;
+
+ return ret;
}
static int mxs_mmc_get_cd(struct mmc_host *mmc)
@@ -707,6 +714,8 @@ static int mxs_mmc_probe(struct platform_device *pdev)
struct pinctrl *pinctrl;
int ret = 0, irq_err, irq_dma;
dma_cap_mask_t mask;
+ struct regulator *reg_vmmc;
+ enum of_gpio_flags flags;
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
@@ -747,6 +756,16 @@ static int mxs_mmc_probe(struct platform_device *pdev)
host->mmc = mmc;
host->sdio_irq_en = 0;
+ reg_vmmc = devm_regulator_get(&pdev->dev, "vmmc");
+ if (!IS_ERR(reg_vmmc)) {
+ ret = regulator_enable(reg_vmmc);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to enable vmmc regulator: %d\n", ret);
+ goto out_mmc_free;
+ }
+ }
+
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
if (IS_ERR(pinctrl)) {
ret = PTR_ERR(pinctrl);
@@ -785,7 +804,10 @@ static int mxs_mmc_probe(struct platform_device *pdev)
mmc->caps |= MMC_CAP_4_BIT_DATA;
else if (bus_width == 8)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
- host->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
+ host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0,
+ &flags);
+ if (flags & OF_GPIO_ACTIVE_LOW)
+ host->wp_inverted = 1;
} else {
if (pdata->flags & SLOTF_8_BIT_CAPABLE)
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 3e8dcf8d2e05..50e08f03aa65 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -17,10 +17,12 @@
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
+#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
+#include <linux/omap-dma.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/clk.h>
@@ -128,6 +130,10 @@ struct mmc_omap_host {
unsigned char id; /* 16xx chips have 2 MMC blocks */
struct clk * iclk;
struct clk * fclk;
+ struct dma_chan *dma_rx;
+ u32 dma_rx_burst;
+ struct dma_chan *dma_tx;
+ u32 dma_tx_burst;
struct resource *mem_res;
void __iomem *virt_base;
unsigned int phys_base;
@@ -153,12 +159,8 @@ struct mmc_omap_host {
unsigned use_dma:1;
unsigned brs_received:1, dma_done:1;
- unsigned dma_is_read:1;
unsigned dma_in_use:1;
- int dma_ch;
spinlock_t dma_lock;
- struct timer_list dma_timer;
- unsigned dma_len;
struct mmc_omap_slot *slots[OMAP_MMC_MAX_SLOTS];
struct mmc_omap_slot *current_slot;
@@ -406,18 +408,25 @@ mmc_omap_release_dma(struct mmc_omap_host *host, struct mmc_data *data,
int abort)
{
enum dma_data_direction dma_data_dir;
+ struct device *dev = mmc_dev(host->mmc);
+ struct dma_chan *c;
- 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)
+ if (data->flags & MMC_DATA_WRITE) {
dma_data_dir = DMA_TO_DEVICE;
- else
+ c = host->dma_tx;
+ } else {
dma_data_dir = DMA_FROM_DEVICE;
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
- dma_data_dir);
+ c = host->dma_rx;
+ }
+ if (c) {
+ if (data->error) {
+ dmaengine_terminate_all(c);
+ /* Claim nothing transferred on error... */
+ data->bytes_xfered = 0;
+ }
+ dev = c->device->dev;
+ }
+ dma_unmap_sg(dev, data->sg, host->sg_len, dma_data_dir);
}
static void mmc_omap_send_stop_work(struct work_struct *work)
@@ -525,16 +534,6 @@ mmc_omap_end_of_data(struct mmc_omap_host *host, struct mmc_data *data)
}
static void
-mmc_omap_dma_timer(unsigned long data)
-{
- struct mmc_omap_host *host = (struct mmc_omap_host *) data;
-
- BUG_ON(host->dma_ch < 0);
- omap_free_dma(host->dma_ch);
- host->dma_ch = -1;
-}
-
-static void
mmc_omap_dma_done(struct mmc_omap_host *host, struct mmc_data *data)
{
unsigned long flags;
@@ -891,159 +890,15 @@ static void mmc_omap_cover_handler(unsigned long param)
jiffies + msecs_to_jiffies(OMAP_MMC_COVER_POLL_DELAY));
}
-/* Prepare to transfer the next segment of a scatterlist */
-static void
-mmc_omap_prepare_dma(struct mmc_omap_host *host, struct mmc_data *data)
+static void mmc_omap_dma_callback(void *priv)
{
- int dma_ch = host->dma_ch;
- unsigned long data_addr;
- u16 buf, frame;
- u32 count;
- struct scatterlist *sg = &data->sg[host->sg_idx];
- int src_port = 0;
- int dst_port = 0;
- int sync_dev = 0;
-
- data_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
- frame = data->blksz;
- count = sg_dma_len(sg);
-
- if ((data->blocks == 1) && (count > data->blksz))
- count = frame;
-
- host->dma_len = count;
-
- /* FIFO is 16x2 bytes on 15xx, and 32x2 bytes on 16xx and 24xx.
- * Use 16 or 32 word frames when the blocksize is at least that large.
- * Blocksize is usually 512 bytes; but not for some SD reads.
- */
- if (cpu_is_omap15xx() && frame > 32)
- frame = 32;
- else if (frame > 64)
- frame = 64;
- count /= frame;
- frame >>= 1;
-
- if (!(data->flags & MMC_DATA_WRITE)) {
- buf = 0x800f | ((frame - 1) << 8);
-
- if (cpu_class_is_omap1()) {
- src_port = OMAP_DMA_PORT_TIPB;
- dst_port = OMAP_DMA_PORT_EMIFF;
- }
- if (cpu_is_omap24xx())
- sync_dev = OMAP24XX_DMA_MMC1_RX;
-
- omap_set_dma_src_params(dma_ch, src_port,
- OMAP_DMA_AMODE_CONSTANT,
- data_addr, 0, 0);
- omap_set_dma_dest_params(dma_ch, dst_port,
- OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sg), 0, 0);
- omap_set_dma_dest_data_pack(dma_ch, 1);
- omap_set_dma_dest_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
- } else {
- buf = 0x0f80 | ((frame - 1) << 0);
-
- if (cpu_class_is_omap1()) {
- src_port = OMAP_DMA_PORT_EMIFF;
- dst_port = OMAP_DMA_PORT_TIPB;
- }
- if (cpu_is_omap24xx())
- sync_dev = OMAP24XX_DMA_MMC1_TX;
-
- omap_set_dma_dest_params(dma_ch, dst_port,
- OMAP_DMA_AMODE_CONSTANT,
- data_addr, 0, 0);
- omap_set_dma_src_params(dma_ch, src_port,
- OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sg), 0, 0);
- omap_set_dma_src_data_pack(dma_ch, 1);
- omap_set_dma_src_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
- }
+ struct mmc_omap_host *host = priv;
+ struct mmc_data *data = host->data;
- /* Max limit for DMA frame count is 0xffff */
- BUG_ON(count > 0xffff);
+ /* If we got to the end of DMA, assume everything went well */
+ data->bytes_xfered += data->blocks * data->blksz;
- OMAP_MMC_WRITE(host, BUF, buf);
- omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S16,
- frame, count, OMAP_DMA_SYNC_FRAME,
- sync_dev, 0);
-}
-
-/* A scatterlist segment completed */
-static void mmc_omap_dma_cb(int lch, u16 ch_status, void *data)
-{
- struct mmc_omap_host *host = (struct mmc_omap_host *) data;
- struct mmc_data *mmcdat = host->data;
-
- if (unlikely(host->dma_ch < 0)) {
- dev_err(mmc_dev(host->mmc),
- "DMA callback while DMA not enabled\n");
- return;
- }
- /* FIXME: We really should do something to _handle_ the errors */
- if (ch_status & OMAP1_DMA_TOUT_IRQ) {
- dev_err(mmc_dev(host->mmc),"DMA timeout\n");
- return;
- }
- if (ch_status & OMAP_DMA_DROP_IRQ) {
- dev_err(mmc_dev(host->mmc), "DMA sync error\n");
- return;
- }
- if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) {
- return;
- }
- mmcdat->bytes_xfered += host->dma_len;
- host->sg_idx++;
- if (host->sg_idx < host->sg_len) {
- mmc_omap_prepare_dma(host, host->data);
- omap_start_dma(host->dma_ch);
- } else
- mmc_omap_dma_done(host, host->data);
-}
-
-static int mmc_omap_get_dma_channel(struct mmc_omap_host *host, struct mmc_data *data)
-{
- const char *dma_dev_name;
- int sync_dev, dma_ch, is_read, r;
-
- is_read = !(data->flags & MMC_DATA_WRITE);
- del_timer_sync(&host->dma_timer);
- if (host->dma_ch >= 0) {
- if (is_read == host->dma_is_read)
- return 0;
- omap_free_dma(host->dma_ch);
- host->dma_ch = -1;
- }
-
- if (is_read) {
- if (host->id == 0) {
- sync_dev = OMAP_DMA_MMC_RX;
- dma_dev_name = "MMC1 read";
- } else {
- sync_dev = OMAP_DMA_MMC2_RX;
- dma_dev_name = "MMC2 read";
- }
- } else {
- if (host->id == 0) {
- sync_dev = OMAP_DMA_MMC_TX;
- dma_dev_name = "MMC1 write";
- } else {
- sync_dev = OMAP_DMA_MMC2_TX;
- dma_dev_name = "MMC2 write";
- }
- }
- r = omap_request_dma(sync_dev, dma_dev_name, mmc_omap_dma_cb,
- host, &dma_ch);
- if (r != 0) {
- dev_dbg(mmc_dev(host->mmc), "omap_request_dma() failed with %d\n", r);
- return r;
- }
- host->dma_ch = dma_ch;
- host->dma_is_read = is_read;
-
- return 0;
+ mmc_omap_dma_done(host, data);
}
static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_request *req)
@@ -1118,33 +973,85 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
host->sg_idx = 0;
if (use_dma) {
- if (mmc_omap_get_dma_channel(host, data) == 0) {
- enum dma_data_direction dma_data_dir;
-
- if (data->flags & MMC_DATA_WRITE)
- dma_data_dir = DMA_TO_DEVICE;
- else
- dma_data_dir = DMA_FROM_DEVICE;
-
- host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
- sg_len, dma_data_dir);
- host->total_bytes_left = 0;
- mmc_omap_prepare_dma(host, req->data);
- host->brs_received = 0;
- host->dma_done = 0;
- host->dma_in_use = 1;
- } else
- use_dma = 0;
+ enum dma_data_direction dma_data_dir;
+ struct dma_async_tx_descriptor *tx;
+ struct dma_chan *c;
+ u32 burst, *bp;
+ u16 buf;
+
+ /*
+ * FIFO is 16x2 bytes on 15xx, and 32x2 bytes on 16xx
+ * and 24xx. Use 16 or 32 word frames when the
+ * blocksize is at least that large. Blocksize is
+ * usually 512 bytes; but not for some SD reads.
+ */
+ burst = cpu_is_omap15xx() ? 32 : 64;
+ if (burst > data->blksz)
+ burst = data->blksz;
+
+ burst >>= 1;
+
+ if (data->flags & MMC_DATA_WRITE) {
+ c = host->dma_tx;
+ bp = &host->dma_tx_burst;
+ buf = 0x0f80 | (burst - 1) << 0;
+ dma_data_dir = DMA_TO_DEVICE;
+ } else {
+ c = host->dma_rx;
+ bp = &host->dma_rx_burst;
+ buf = 0x800f | (burst - 1) << 8;
+ dma_data_dir = DMA_FROM_DEVICE;
+ }
+
+ if (!c)
+ goto use_pio;
+
+ /* Only reconfigure if we have a different burst size */
+ if (*bp != burst) {
+ struct dma_slave_config cfg;
+
+ cfg.src_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
+ cfg.dst_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
+ cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+ cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+ cfg.src_maxburst = burst;
+ cfg.dst_maxburst = burst;
+
+ if (dmaengine_slave_config(c, &cfg))
+ goto use_pio;
+
+ *bp = burst;
+ }
+
+ host->sg_len = dma_map_sg(c->device->dev, data->sg, sg_len,
+ dma_data_dir);
+ if (host->sg_len == 0)
+ goto use_pio;
+
+ tx = dmaengine_prep_slave_sg(c, data->sg, host->sg_len,
+ data->flags & MMC_DATA_WRITE ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!tx)
+ goto use_pio;
+
+ OMAP_MMC_WRITE(host, BUF, buf);
+
+ tx->callback = mmc_omap_dma_callback;
+ tx->callback_param = host;
+ dmaengine_submit(tx);
+ host->brs_received = 0;
+ host->dma_done = 0;
+ host->dma_in_use = 1;
+ return;
}
+ use_pio:
/* Revert to PIO? */
- if (!use_dma) {
- OMAP_MMC_WRITE(host, BUF, 0x1f1f);
- host->total_bytes_left = data->blocks * block_size;
- host->sg_len = sg_len;
- mmc_omap_sg_to_buf(host);
- host->dma_in_use = 0;
- }
+ OMAP_MMC_WRITE(host, BUF, 0x1f1f);
+ host->total_bytes_left = data->blocks * block_size;
+ host->sg_len = sg_len;
+ mmc_omap_sg_to_buf(host);
+ host->dma_in_use = 0;
}
static void mmc_omap_start_request(struct mmc_omap_host *host,
@@ -1157,8 +1064,12 @@ static void mmc_omap_start_request(struct mmc_omap_host *host,
/* only touch fifo AFTER the controller readies it */
mmc_omap_prepare_data(host, req);
mmc_omap_start_command(host, req->cmd);
- if (host->dma_in_use)
- omap_start_dma(host->dma_ch);
+ if (host->dma_in_use) {
+ struct dma_chan *c = host->data->flags & MMC_DATA_WRITE ?
+ host->dma_tx : host->dma_rx;
+
+ dma_async_issue_pending(c);
+ }
}
static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req)
@@ -1400,6 +1311,8 @@ static int __devinit 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;
+ dma_cap_mask_t mask;
+ unsigned sig;
int i, ret = 0;
int irq;
@@ -1439,7 +1352,6 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
setup_timer(&host->clk_timer, mmc_omap_clk_timer, (unsigned long) host);
spin_lock_init(&host->dma_lock);
- setup_timer(&host->dma_timer, mmc_omap_dma_timer, (unsigned long) host);
spin_lock_init(&host->slot_lock);
init_waitqueue_head(&host->slot_wq);
@@ -1450,11 +1362,7 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
host->id = pdev->id;
host->mem_res = res;
host->irq = irq;
-
host->use_dma = 1;
- host->dev->dma_mask = &pdata->dma_mask;
- host->dma_ch = -1;
-
host->irq = irq;
host->phys_base = host->mem_res->start;
host->virt_base = ioremap(res->start, resource_size(res));
@@ -1474,9 +1382,48 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
goto err_free_iclk;
}
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ host->dma_tx_burst = -1;
+ host->dma_rx_burst = -1;
+
+ if (cpu_is_omap24xx())
+ sig = host->id == 0 ? OMAP24XX_DMA_MMC1_TX : OMAP24XX_DMA_MMC2_TX;
+ else
+ sig = host->id == 0 ? OMAP_DMA_MMC_TX : OMAP_DMA_MMC2_TX;
+ host->dma_tx = dma_request_channel(mask, omap_dma_filter_fn, &sig);
+#if 0
+ if (!host->dma_tx) {
+ dev_err(host->dev, "unable to obtain TX DMA engine channel %u\n",
+ sig);
+ goto err_dma;
+ }
+#else
+ if (!host->dma_tx)
+ dev_warn(host->dev, "unable to obtain TX DMA engine channel %u\n",
+ sig);
+#endif
+ if (cpu_is_omap24xx())
+ sig = host->id == 0 ? OMAP24XX_DMA_MMC1_RX : OMAP24XX_DMA_MMC2_RX;
+ else
+ sig = host->id == 0 ? OMAP_DMA_MMC_RX : OMAP_DMA_MMC2_RX;
+ host->dma_rx = dma_request_channel(mask, omap_dma_filter_fn, &sig);
+#if 0
+ if (!host->dma_rx) {
+ dev_err(host->dev, "unable to obtain RX DMA engine channel %u\n",
+ sig);
+ goto err_dma;
+ }
+#else
+ if (!host->dma_rx)
+ dev_warn(host->dev, "unable to obtain RX DMA engine channel %u\n",
+ sig);
+#endif
+
ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
if (ret)
- goto err_free_fclk;
+ goto err_free_dma;
if (pdata->init != NULL) {
ret = pdata->init(&pdev->dev);
@@ -1510,7 +1457,11 @@ err_plat_cleanup:
pdata->cleanup(&pdev->dev);
err_free_irq:
free_irq(host->irq, host);
-err_free_fclk:
+err_free_dma:
+ if (host->dma_tx)
+ dma_release_channel(host->dma_tx);
+ if (host->dma_rx)
+ dma_release_channel(host->dma_rx);
clk_put(host->fclk);
err_free_iclk:
clk_disable(host->iclk);
@@ -1545,6 +1496,11 @@ static int __devexit mmc_omap_remove(struct platform_device *pdev)
clk_disable(host->iclk);
clk_put(host->iclk);
+ if (host->dma_tx)
+ dma_release_channel(host->dma_tx);
+ if (host->dma_rx)
+ dma_release_channel(host->dma_rx);
+
iounmap(host->virt_base);
release_mem_region(pdev->resource[0].start,
pdev->resource[0].end - pdev->resource[0].start + 1);
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 389a3eedfc24..3a09f93cc3b6 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -19,6 +19,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/debugfs.h>
+#include <linux/dmaengine.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
@@ -29,6 +30,7 @@
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_device.h>
+#include <linux/omap-dma.h>
#include <linux/mmc/host.h>
#include <linux/mmc/core.h>
#include <linux/mmc/mmc.h>
@@ -37,7 +39,6 @@
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
-#include <plat/dma.h>
#include <mach/hardware.h>
#include <plat/board.h>
#include <plat/mmc.h>
@@ -166,7 +167,8 @@ struct omap_hsmmc_host {
int suspended;
int irq;
int use_dma, dma_ch;
- int dma_line_tx, dma_line_rx;
+ struct dma_chan *tx_chan;
+ struct dma_chan *rx_chan;
int slot_id;
int response_busy;
int context_loss;
@@ -797,6 +799,12 @@ omap_hsmmc_get_dma_dir(struct omap_hsmmc_host *host, struct mmc_data *data)
return DMA_FROM_DEVICE;
}
+static struct dma_chan *omap_hsmmc_get_dma_chan(struct omap_hsmmc_host *host,
+ struct mmc_data *data)
+{
+ return data->flags & MMC_DATA_WRITE ? host->tx_chan : host->rx_chan;
+}
+
static void omap_hsmmc_request_done(struct omap_hsmmc_host *host, struct mmc_request *mrq)
{
int dma_ch;
@@ -889,10 +897,13 @@ static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno)
spin_unlock_irqrestore(&host->irq_lock, flags);
if (host->use_dma && dma_ch != -1) {
- dma_unmap_sg(mmc_dev(host->mmc), host->data->sg,
- host->data->sg_len,
+ struct dma_chan *chan = omap_hsmmc_get_dma_chan(host, host->data);
+
+ dmaengine_terminate_all(chan);
+ dma_unmap_sg(chan->device->dev,
+ host->data->sg, host->data->sg_len,
omap_hsmmc_get_dma_dir(host, host->data));
- omap_free_dma(dma_ch);
+
host->data->host_cookie = 0;
}
host->data = NULL;
@@ -1089,7 +1100,7 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd)
/* Disable the clocks */
pm_runtime_put_sync(host->dev);
if (host->dbclk)
- clk_disable(host->dbclk);
+ clk_disable_unprepare(host->dbclk);
/* Turn the power off */
ret = mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0);
@@ -1100,7 +1111,7 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd)
vdd);
pm_runtime_get_sync(host->dev);
if (host->dbclk)
- clk_enable(host->dbclk);
+ clk_prepare_enable(host->dbclk);
if (ret != 0)
goto err;
@@ -1190,90 +1201,29 @@ static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int omap_hsmmc_get_dma_sync_dev(struct omap_hsmmc_host *host,
- struct mmc_data *data)
-{
- int sync_dev;
-
- if (data->flags & MMC_DATA_WRITE)
- sync_dev = host->dma_line_tx;
- else
- sync_dev = host->dma_line_rx;
- return sync_dev;
-}
-
-static void omap_hsmmc_config_dma_params(struct omap_hsmmc_host *host,
- struct mmc_data *data,
- struct scatterlist *sgl)
+static void omap_hsmmc_dma_callback(void *param)
{
- int blksz, nblk, dma_ch;
-
- dma_ch = host->dma_ch;
- if (data->flags & MMC_DATA_WRITE) {
- omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT,
- (host->mapbase + OMAP_HSMMC_DATA), 0, 0);
- omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sgl), 0, 0);
- } else {
- omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT,
- (host->mapbase + OMAP_HSMMC_DATA), 0, 0);
- omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sgl), 0, 0);
- }
-
- blksz = host->data->blksz;
- nblk = sg_dma_len(sgl) / blksz;
-
- omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S32,
- blksz / 4, nblk, OMAP_DMA_SYNC_FRAME,
- omap_hsmmc_get_dma_sync_dev(host, data),
- !(data->flags & MMC_DATA_WRITE));
-
- omap_start_dma(dma_ch);
-}
-
-/*
- * DMA call back function
- */
-static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
-{
- struct omap_hsmmc_host *host = cb_data;
+ struct omap_hsmmc_host *host = param;
+ struct dma_chan *chan;
struct mmc_data *data;
- int dma_ch, req_in_progress;
- unsigned long flags;
+ int req_in_progress;
- if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) {
- dev_warn(mmc_dev(host->mmc), "unexpected dma status %x\n",
- ch_status);
- return;
- }
-
- spin_lock_irqsave(&host->irq_lock, flags);
+ spin_lock_irq(&host->irq_lock);
if (host->dma_ch < 0) {
- spin_unlock_irqrestore(&host->irq_lock, flags);
+ spin_unlock_irq(&host->irq_lock);
return;
}
data = host->mrq->data;
- host->dma_sg_idx++;
- if (host->dma_sg_idx < host->dma_len) {
- /* Fire up the next transfer. */
- omap_hsmmc_config_dma_params(host, data,
- data->sg + host->dma_sg_idx);
- spin_unlock_irqrestore(&host->irq_lock, flags);
- return;
- }
-
+ chan = omap_hsmmc_get_dma_chan(host, data);
if (!data->host_cookie)
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ dma_unmap_sg(chan->device->dev,
+ data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
req_in_progress = host->req_in_progress;
- dma_ch = host->dma_ch;
host->dma_ch = -1;
- spin_unlock_irqrestore(&host->irq_lock, flags);
-
- omap_free_dma(dma_ch);
+ spin_unlock_irq(&host->irq_lock);
/* If DMA has finished after TC, complete the request */
if (!req_in_progress) {
@@ -1286,7 +1236,8 @@ static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
struct mmc_data *data,
- struct omap_hsmmc_next *next)
+ struct omap_hsmmc_next *next,
+ struct dma_chan *chan)
{
int dma_len;
@@ -1301,8 +1252,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
/* Check if next job is already prepared */
if (next ||
(!next && data->host_cookie != host->next_data.cookie)) {
- dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
- data->sg_len,
+ dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
} else {
@@ -1329,8 +1279,11 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
struct mmc_request *req)
{
- int dma_ch = 0, ret = 0, i;
+ struct dma_slave_config cfg;
+ struct dma_async_tx_descriptor *tx;
+ int ret = 0, i;
struct mmc_data *data = req->data;
+ struct dma_chan *chan;
/* Sanity check: all the SG entries must be aligned by block size. */
for (i = 0; i < data->sg_len; i++) {
@@ -1348,22 +1301,41 @@ static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
BUG_ON(host->dma_ch != -1);
- ret = omap_request_dma(omap_hsmmc_get_dma_sync_dev(host, data),
- "MMC/SD", omap_hsmmc_dma_cb, host, &dma_ch);
- if (ret != 0) {
- dev_err(mmc_dev(host->mmc),
- "%s: omap_request_dma() failed with %d\n",
- mmc_hostname(host->mmc), ret);
+ chan = omap_hsmmc_get_dma_chan(host, data);
+
+ cfg.src_addr = host->mapbase + OMAP_HSMMC_DATA;
+ cfg.dst_addr = host->mapbase + OMAP_HSMMC_DATA;
+ cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ cfg.src_maxburst = data->blksz / 4;
+ cfg.dst_maxburst = data->blksz / 4;
+
+ ret = dmaengine_slave_config(chan, &cfg);
+ if (ret)
return ret;
- }
- ret = omap_hsmmc_pre_dma_transfer(host, data, NULL);
+
+ ret = omap_hsmmc_pre_dma_transfer(host, data, NULL, chan);
if (ret)
return ret;
- host->dma_ch = dma_ch;
- host->dma_sg_idx = 0;
+ tx = dmaengine_prep_slave_sg(chan, data->sg, data->sg_len,
+ data->flags & MMC_DATA_WRITE ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!tx) {
+ dev_err(mmc_dev(host->mmc), "prep_slave_sg() failed\n");
+ /* FIXME: cleanup */
+ return -1;
+ }
+
+ tx->callback = omap_hsmmc_dma_callback;
+ tx->callback_param = host;
+
+ /* Does not fail */
+ dmaengine_submit(tx);
- omap_hsmmc_config_dma_params(host, data, data->sg);
+ host->dma_ch = 1;
+
+ dma_async_issue_pending(chan);
return 0;
}
@@ -1445,11 +1417,11 @@ static void omap_hsmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
struct omap_hsmmc_host *host = mmc_priv(mmc);
struct mmc_data *data = mrq->data;
- if (host->use_dma) {
- if (data->host_cookie)
- dma_unmap_sg(mmc_dev(host->mmc), data->sg,
- data->sg_len,
- omap_hsmmc_get_dma_dir(host, data));
+ if (host->use_dma && data->host_cookie) {
+ struct dma_chan *c = omap_hsmmc_get_dma_chan(host, data);
+
+ dma_unmap_sg(c->device->dev, data->sg, data->sg_len,
+ omap_hsmmc_get_dma_dir(host, data));
data->host_cookie = 0;
}
}
@@ -1464,10 +1436,13 @@ static void omap_hsmmc_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
return ;
}
- if (host->use_dma)
+ if (host->use_dma) {
+ struct dma_chan *c = omap_hsmmc_get_dma_chan(host, mrq->data);
+
if (omap_hsmmc_pre_dma_transfer(host, mrq->data,
- &host->next_data))
+ &host->next_data, c))
mrq->data->host_cookie = 0;
+ }
}
/*
@@ -1800,6 +1775,8 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
struct resource *res;
int ret, irq;
const struct of_device_id *match;
+ dma_cap_mask_t mask;
+ unsigned tx_req, rx_req;
match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev);
if (match) {
@@ -1844,7 +1821,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
host->pdata = pdata;
host->dev = &pdev->dev;
host->use_dma = 1;
- host->dev->dma_mask = &pdata->dma_mask;
host->dma_ch = -1;
host->irq = irq;
host->slot_id = 0;
@@ -1899,7 +1875,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
if (IS_ERR(host->dbclk)) {
dev_warn(mmc_dev(host->mmc), "Failed to get debounce clk\n");
host->dbclk = NULL;
- } else if (clk_enable(host->dbclk) != 0) {
+ } else if (clk_prepare_enable(host->dbclk) != 0) {
dev_warn(mmc_dev(host->mmc), "Failed to enable debounce clk\n");
clk_put(host->dbclk);
host->dbclk = NULL;
@@ -1931,16 +1907,35 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
if (!res) {
dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n");
+ ret = -ENXIO;
goto err_irq;
}
- host->dma_line_tx = res->start;
+ tx_req = res->start;
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
if (!res) {
dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n");
+ ret = -ENXIO;
+ goto err_irq;
+ }
+ rx_req = res->start;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ host->rx_chan = dma_request_channel(mask, omap_dma_filter_fn, &rx_req);
+ if (!host->rx_chan) {
+ dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req);
+ ret = -ENXIO;
+ goto err_irq;
+ }
+
+ host->tx_chan = dma_request_channel(mask, omap_dma_filter_fn, &tx_req);
+ if (!host->tx_chan) {
+ dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel %u\n", tx_req);
+ ret = -ENXIO;
goto err_irq;
}
- host->dma_line_rx = res->start;
/* Request IRQ for MMC operations */
ret = request_irq(host->irq, omap_hsmmc_irq, 0,
@@ -2019,11 +2014,15 @@ err_reg:
err_irq_cd_init:
free_irq(host->irq, host);
err_irq:
+ if (host->tx_chan)
+ dma_release_channel(host->tx_chan);
+ if (host->rx_chan)
+ dma_release_channel(host->rx_chan);
pm_runtime_put_sync(host->dev);
pm_runtime_disable(host->dev);
clk_put(host->fclk);
if (host->dbclk) {
- clk_disable(host->dbclk);
+ clk_disable_unprepare(host->dbclk);
clk_put(host->dbclk);
}
err1:
@@ -2054,11 +2053,16 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev)
if (mmc_slot(host).card_detect_irq)
free_irq(mmc_slot(host).card_detect_irq, host);
+ if (host->tx_chan)
+ dma_release_channel(host->tx_chan);
+ if (host->rx_chan)
+ dma_release_channel(host->rx_chan);
+
pm_runtime_put_sync(host->dev);
pm_runtime_disable(host->dev);
clk_put(host->fclk);
if (host->dbclk) {
- clk_disable(host->dbclk);
+ clk_disable_unprepare(host->dbclk);
clk_put(host->dbclk);
}
@@ -2116,7 +2120,7 @@ static int omap_hsmmc_suspend(struct device *dev)
}
if (host->dbclk)
- clk_disable(host->dbclk);
+ clk_disable_unprepare(host->dbclk);
err:
pm_runtime_put_sync(host->dev);
return ret;
@@ -2137,7 +2141,7 @@ static int omap_hsmmc_resume(struct device *dev)
pm_runtime_get_sync(host->dev);
if (host->dbclk)
- clk_enable(host->dbclk);
+ clk_prepare_enable(host->dbclk);
if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER))
omap_hsmmc_conf_bus_power(host);
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index c3622a69f432..bd5a5cce122c 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -26,7 +26,6 @@
#include <mach/dma.h>
#include <mach/regs-sdi.h>
-#include <mach/regs-gpio.h>
#include <plat/mci.h>
@@ -1237,12 +1236,9 @@ static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
switch (ios->power_mode) {
case MMC_POWER_ON:
case MMC_POWER_UP:
- s3c2410_gpio_cfgpin(S3C2410_GPE(5), S3C2410_GPE5_SDCLK);
- s3c2410_gpio_cfgpin(S3C2410_GPE(6), S3C2410_GPE6_SDCMD);
- s3c2410_gpio_cfgpin(S3C2410_GPE(7), S3C2410_GPE7_SDDAT0);
- s3c2410_gpio_cfgpin(S3C2410_GPE(8), S3C2410_GPE8_SDDAT1);
- s3c2410_gpio_cfgpin(S3C2410_GPE(9), S3C2410_GPE9_SDDAT2);
- s3c2410_gpio_cfgpin(S3C2410_GPE(10), S3C2410_GPE10_SDDAT3);
+ /* Configure GPE5...GPE10 pins in SD mode */
+ s3c_gpio_cfgall_range(S3C2410_GPE(5), 6, S3C_GPIO_SFN(2),
+ S3C_GPIO_PULL_NONE);
if (host->pdata->set_power)
host->pdata->set_power(ios->power_mode, ios->vdd);
diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
index 177f697b5835..a6e53a1ebb08 100644
--- a/drivers/mmc/host/sdhci-dove.c
+++ b/drivers/mmc/host/sdhci-dove.c
@@ -20,11 +20,17 @@
*/
#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/module.h>
#include <linux/mmc/host.h>
#include "sdhci-pltfm.h"
+struct sdhci_dove_priv {
+ struct clk *clk;
+};
+
static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
{
u16 ret;
@@ -66,16 +72,57 @@ static struct sdhci_pltfm_data sdhci_dove_pdata = {
.quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
SDHCI_QUIRK_NO_BUSY_IRQ |
SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
- SDHCI_QUIRK_FORCE_DMA,
+ SDHCI_QUIRK_FORCE_DMA |
+ SDHCI_QUIRK_NO_HISPD_BIT,
};
static int __devinit sdhci_dove_probe(struct platform_device *pdev)
{
- return sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
+ struct sdhci_host *host;
+ struct sdhci_pltfm_host *pltfm_host;
+ struct sdhci_dove_priv *priv;
+ int ret;
+
+ ret = sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
+ if (ret)
+ goto sdhci_dove_register_fail;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_dove_priv),
+ GFP_KERNEL);
+ if (!priv) {
+ dev_err(&pdev->dev, "unable to allocate private data");
+ ret = -ENOMEM;
+ goto sdhci_dove_allocate_fail;
+ }
+
+ host = platform_get_drvdata(pdev);
+ pltfm_host = sdhci_priv(host);
+ pltfm_host->priv = priv;
+
+ priv->clk = clk_get(&pdev->dev, NULL);
+ if (!IS_ERR(priv->clk))
+ clk_prepare_enable(priv->clk);
+ return 0;
+
+sdhci_dove_allocate_fail:
+ sdhci_pltfm_unregister(pdev);
+sdhci_dove_register_fail:
+ return ret;
}
static int __devexit sdhci_dove_remove(struct platform_device *pdev)
{
+ struct sdhci_host *host = platform_get_drvdata(pdev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_dove_priv *priv = pltfm_host->priv;
+
+ if (priv->clk) {
+ if (!IS_ERR(priv->clk)) {
+ clk_disable_unprepare(priv->clk);
+ clk_put(priv->clk);
+ }
+ devm_kfree(&pdev->dev, priv->clk);
+ }
return sdhci_pltfm_unregister(pdev);
}
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index ebbe984e5d00..e23f8134591c 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -299,6 +299,8 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg)
{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct pltfm_imx_data *imx_data = pltfm_host->priv;
u32 new_val;
switch (reg) {
@@ -315,8 +317,11 @@ static void esdhc_writeb_le(struct sdhci_host *host, u8 val, int reg)
SDHCI_CTRL_D3CD);
/* ensure the endianess */
new_val |= ESDHC_HOST_CONTROL_LE;
- /* DMA mode bits are shifted */
- new_val |= (val & SDHCI_CTRL_DMA_MASK) << 5;
+ /* bits 8&9 are reserved on mx25 */
+ if (!is_imx25_esdhc(imx_data)) {
+ /* DMA mode bits are shifted */
+ new_val |= (val & SDHCI_CTRL_DMA_MASK) << 5;
+ }
esdhc_clrset_le(host, 0xffff, new_val, reg);
return;
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 69ef0beae104..504da715a41a 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -157,6 +157,7 @@ static const struct sdhci_pci_fixes sdhci_ene_714 = {
static const struct sdhci_pci_fixes sdhci_cafe = {
.quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
SDHCI_QUIRK_NO_BUSY_IRQ |
+ SDHCI_QUIRK_BROKEN_CARD_DETECTION |
SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
};
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index dbb75bfbcffb..b6ee8857e226 100644
--- a/drivers/mmc/host/sdhci-pxav2.c
+++ b/drivers/mmc/host/sdhci-pxav2.c
@@ -28,6 +28,9 @@
#include <linux/mmc/host.h>
#include <linux/platform_data/pxa_sdhci.h>
#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
#include "sdhci.h"
#include "sdhci-pltfm.h"
@@ -121,6 +124,48 @@ static struct sdhci_ops pxav2_sdhci_ops = {
.platform_8bit_width = pxav2_mmc_set_width,
};
+#ifdef CONFIG_OF
+static const struct of_device_id sdhci_pxav2_of_match[] = {
+ {
+ .compatible = "mrvl,pxav2-mmc",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, sdhci_pxav2_of_match);
+
+static struct sdhci_pxa_platdata *pxav2_get_mmc_pdata(struct device *dev)
+{
+ struct sdhci_pxa_platdata *pdata;
+ struct device_node *np = dev->of_node;
+ u32 bus_width;
+ u32 clk_delay_cycles;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ if (of_find_property(np, "non-removable", NULL))
+ pdata->flags |= PXA_FLAG_CARD_PERMANENT;
+
+ of_property_read_u32(np, "bus-width", &bus_width);
+ if (bus_width == 8)
+ pdata->flags |= PXA_FLAG_SD_8_BIT_CAPABLE_SLOT;
+
+ of_property_read_u32(np, "mrvl,clk-delay-cycles", &clk_delay_cycles);
+ if (clk_delay_cycles > 0) {
+ pdata->clk_delay_sel = 1;
+ pdata->clk_delay_cycles = clk_delay_cycles;
+ }
+
+ return pdata;
+}
+#else
+static inline struct sdhci_pxa_platdata *pxav2_get_mmc_pdata(struct device *dev)
+{
+ return NULL;
+}
+#endif
+
static int __devinit sdhci_pxav2_probe(struct platform_device *pdev)
{
struct sdhci_pltfm_host *pltfm_host;
@@ -128,6 +173,8 @@ static int __devinit sdhci_pxav2_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct sdhci_host *host = NULL;
struct sdhci_pxa *pxa = NULL;
+ const struct of_device_id *match;
+
int ret;
struct clk *clk;
@@ -156,6 +203,10 @@ static int __devinit sdhci_pxav2_probe(struct platform_device *pdev)
| SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
| SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN;
+ match = of_match_device(of_match_ptr(sdhci_pxav2_of_match), &pdev->dev);
+ if (match) {
+ pdata = pxav2_get_mmc_pdata(dev);
+ }
if (pdata) {
if (pdata->flags & PXA_FLAG_CARD_PERMANENT) {
/* on-chip device */
@@ -218,6 +269,9 @@ static struct platform_driver sdhci_pxav2_driver = {
.driver = {
.name = "sdhci-pxav2",
.owner = THIS_MODULE,
+#ifdef CONFIG_OF
+ .of_match_table = sdhci_pxav2_of_match,
+#endif
.pm = SDHCI_PLTFM_PMOPS,
},
.probe = sdhci_pxav2_probe,
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index f29695683556..07fe3834fe0b 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -28,6 +28,9 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
#include "sdhci.h"
#include "sdhci-pltfm.h"
@@ -164,6 +167,46 @@ static struct sdhci_ops pxav3_sdhci_ops = {
.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
};
+#ifdef CONFIG_OF
+static const struct of_device_id sdhci_pxav3_of_match[] = {
+ {
+ .compatible = "mrvl,pxav3-mmc",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, sdhci_pxav3_of_match);
+
+static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
+{
+ struct sdhci_pxa_platdata *pdata;
+ struct device_node *np = dev->of_node;
+ u32 bus_width;
+ u32 clk_delay_cycles;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ if (of_find_property(np, "non-removable", NULL))
+ pdata->flags |= PXA_FLAG_CARD_PERMANENT;
+
+ of_property_read_u32(np, "bus-width", &bus_width);
+ if (bus_width == 8)
+ pdata->flags |= PXA_FLAG_SD_8_BIT_CAPABLE_SLOT;
+
+ of_property_read_u32(np, "mrvl,clk-delay-cycles", &clk_delay_cycles);
+ if (clk_delay_cycles > 0)
+ pdata->clk_delay_cycles = clk_delay_cycles;
+
+ return pdata;
+}
+#else
+static inline struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
+{
+ return NULL;
+}
+#endif
+
static int __devinit sdhci_pxav3_probe(struct platform_device *pdev)
{
struct sdhci_pltfm_host *pltfm_host;
@@ -171,6 +214,8 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct sdhci_host *host = NULL;
struct sdhci_pxa *pxa = NULL;
+ const struct of_device_id *match;
+
int ret;
struct clk *clk;
@@ -202,6 +247,10 @@ static int __devinit sdhci_pxav3_probe(struct platform_device *pdev)
/* enable 1/8V DDR capable */
host->mmc->caps |= MMC_CAP_1_8V_DDR;
+ match = of_match_device(of_match_ptr(sdhci_pxav3_of_match), &pdev->dev);
+ if (match)
+ pdata = pxav3_get_mmc_pdata(dev);
+
if (pdata) {
if (pdata->flags & PXA_FLAG_CARD_PERMANENT) {
/* on-chip device */
@@ -263,6 +312,9 @@ static int __devexit sdhci_pxav3_remove(struct platform_device *pdev)
static struct platform_driver sdhci_pxav3_driver = {
.driver = {
.name = "sdhci-pxav3",
+#ifdef CONFIG_OF
+ .of_match_table = sdhci_pxav3_of_match,
+#endif
.owner = THIS_MODULE,
.pm = SDHCI_PLTFM_PMOPS,
},
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index b38d8a78f6a0..0810ccc23d7e 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -223,6 +223,7 @@ static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata(
{
struct tegra_sdhci_platform_data *plat;
struct device_node *np = pdev->dev.of_node;
+ u32 bus_width;
if (!np)
return NULL;
@@ -236,7 +237,9 @@ static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata(
plat->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0);
plat->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
plat->power_gpio = of_get_named_gpio(np, "power-gpios", 0);
- if (of_find_property(np, "support-8bit", NULL))
+
+ if (of_property_read_u32(np, "bus-width", &bus_width) == 0 &&
+ bus_width == 8)
plat->is_8bit = 1;
return plat;
@@ -334,7 +337,7 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
rc = PTR_ERR(clk);
goto err_clk_get;
}
- clk_enable(clk);
+ clk_prepare_enable(clk);
pltfm_host->clk = clk;
host->mmc->pm_caps = plat->pm_flags;
@@ -349,7 +352,7 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
return 0;
err_add_host:
- clk_disable(pltfm_host->clk);
+ clk_disable_unprepare(pltfm_host->clk);
clk_put(pltfm_host->clk);
err_clk_get:
if (gpio_is_valid(plat->wp_gpio))
@@ -390,7 +393,7 @@ static int __devexit sdhci_tegra_remove(struct platform_device *pdev)
if (gpio_is_valid(plat->power_gpio))
gpio_free(plat->power_gpio);
- clk_disable(pltfm_host->clk);
+ clk_disable_unprepare(pltfm_host->clk);
clk_put(pltfm_host->clk);
sdhci_pltfm_free(pdev);
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index f4b8b4db3a9a..9a11dc39921c 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -27,6 +27,7 @@
#include <linux/mmc/mmc.h>
#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
#include "sdhci.h"
@@ -244,6 +245,19 @@ static void sdhci_init(struct sdhci_host *host, int soft)
static void sdhci_reinit(struct sdhci_host *host)
{
sdhci_init(host, 0);
+ /*
+ * Retuning stuffs are affected by different cards inserted and only
+ * applicable to UHS-I cards. So reset these fields to their initial
+ * value when card is removed.
+ */
+ if (host->flags & SDHCI_USING_RETUNING_TIMER) {
+ host->flags &= ~SDHCI_USING_RETUNING_TIMER;
+
+ del_timer_sync(&host->tuning_timer);
+ host->flags &= ~SDHCI_NEEDS_RETUNING;
+ host->mmc->max_blk_count =
+ (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;
+ }
sdhci_enable_card_detection(host);
}
@@ -1245,6 +1259,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
struct sdhci_host *host;
bool present;
unsigned long flags;
+ u32 tuning_opcode;
host = mmc_priv(mmc);
@@ -1292,8 +1307,12 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
*/
if ((host->flags & SDHCI_NEEDS_RETUNING) &&
!(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) {
+ /* eMMC uses cmd21 while sd and sdio use cmd19 */
+ tuning_opcode = mmc->card->type == MMC_TYPE_MMC ?
+ MMC_SEND_TUNING_BLOCK_HS200 :
+ MMC_SEND_TUNING_BLOCK;
spin_unlock_irqrestore(&host->lock, flags);
- sdhci_execute_tuning(mmc, mrq->cmd->opcode);
+ sdhci_execute_tuning(mmc, tuning_opcode);
spin_lock_irqsave(&host->lock, flags);
/* Restore original mmc_request structure */
@@ -1663,11 +1682,15 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
pwr = sdhci_readb(host, SDHCI_POWER_CONTROL);
pwr &= ~SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
+ if (host->vmmc)
+ regulator_disable(host->vmmc);
/* Wait for 1ms as per the spec */
usleep_range(1000, 1500);
pwr |= SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
+ if (host->vmmc)
+ regulator_enable(host->vmmc);
pr_info(DRIVER_NAME ": Switching to 1.8V signalling "
"voltage failed, retrying with S18R set to 0\n");
@@ -1855,6 +1878,7 @@ out:
*/
if (!(host->flags & SDHCI_NEEDS_RETUNING) && host->tuning_count &&
(host->tuning_mode == SDHCI_TUNING_MODE_1)) {
+ host->flags |= SDHCI_USING_RETUNING_TIMER;
mod_timer(&host->tuning_timer, jiffies +
host->tuning_count * HZ);
/* Tuning mode 1 limits the maximum data length to 4MB */
@@ -1872,10 +1896,10 @@ out:
* try tuning again at a later time, when the re-tuning timer expires.
* So for these controllers, we return 0. Since there might be other
* controllers who do not have this capability, we return error for
- * them.
+ * them. SDHCI_USING_RETUNING_TIMER means the host is currently using
+ * a retuning timer to do the retuning for the card.
*/
- if (err && host->tuning_count &&
- host->tuning_mode == SDHCI_TUNING_MODE_1)
+ if (err && (host->flags & SDHCI_USING_RETUNING_TIMER))
err = 0;
sdhci_clear_set_irqs(host, SDHCI_INT_DATA_AVAIL, ier);
@@ -2382,7 +2406,6 @@ out:
int sdhci_suspend_host(struct sdhci_host *host)
{
int ret;
- bool has_tuning_timer;
if (host->ops->platform_suspend)
host->ops->platform_suspend(host);
@@ -2390,16 +2413,14 @@ int sdhci_suspend_host(struct sdhci_host *host)
sdhci_disable_card_detection(host);
/* Disable tuning since we are suspending */
- has_tuning_timer = host->version >= SDHCI_SPEC_300 &&
- host->tuning_count && host->tuning_mode == SDHCI_TUNING_MODE_1;
- if (has_tuning_timer) {
+ if (host->flags & SDHCI_USING_RETUNING_TIMER) {
del_timer_sync(&host->tuning_timer);
host->flags &= ~SDHCI_NEEDS_RETUNING;
}
ret = mmc_suspend_host(host->mmc);
if (ret) {
- if (has_tuning_timer) {
+ if (host->flags & SDHCI_USING_RETUNING_TIMER) {
host->flags |= SDHCI_NEEDS_RETUNING;
mod_timer(&host->tuning_timer, jiffies +
host->tuning_count * HZ);
@@ -2450,8 +2471,7 @@ int sdhci_resume_host(struct sdhci_host *host)
host->ops->platform_resume(host);
/* Set the re-tuning expiration flag */
- if ((host->version >= SDHCI_SPEC_300) && host->tuning_count &&
- (host->tuning_mode == SDHCI_TUNING_MODE_1))
+ if (host->flags & SDHCI_USING_RETUNING_TIMER)
host->flags |= SDHCI_NEEDS_RETUNING;
return ret;
@@ -2490,8 +2510,7 @@ int sdhci_runtime_suspend_host(struct sdhci_host *host)
int ret = 0;
/* Disable tuning since we are suspending */
- if (host->version >= SDHCI_SPEC_300 &&
- host->tuning_mode == SDHCI_TUNING_MODE_1) {
+ if (host->flags & SDHCI_USING_RETUNING_TIMER) {
del_timer_sync(&host->tuning_timer);
host->flags &= ~SDHCI_NEEDS_RETUNING;
}
@@ -2532,8 +2551,7 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
sdhci_do_enable_preset_value(host, true);
/* Set the re-tuning expiration flag */
- if ((host->version >= SDHCI_SPEC_300) && host->tuning_count &&
- (host->tuning_mode == SDHCI_TUNING_MODE_1))
+ if (host->flags & SDHCI_USING_RETUNING_TIMER)
host->flags |= SDHCI_NEEDS_RETUNING;
spin_lock_irqsave(&host->lock, flags);
@@ -2584,7 +2602,7 @@ EXPORT_SYMBOL_GPL(sdhci_alloc_host);
int sdhci_add_host(struct sdhci_host *host)
{
struct mmc_host *mmc;
- u32 caps[2];
+ u32 caps[2] = {0, 0};
u32 max_current_caps;
unsigned int ocr_avail;
int ret;
@@ -2614,8 +2632,10 @@ int sdhci_add_host(struct sdhci_host *host)
caps[0] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps :
sdhci_readl(host, SDHCI_CAPABILITIES);
- caps[1] = (host->version >= SDHCI_SPEC_300) ?
- sdhci_readl(host, SDHCI_CAPABILITIES_1) : 0;
+ if (host->version >= SDHCI_SPEC_300)
+ caps[1] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ?
+ host->caps1 :
+ sdhci_readl(host, SDHCI_CAPABILITIES_1);
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
@@ -2779,7 +2799,7 @@ int sdhci_add_host(struct sdhci_host *host)
mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
- mmc_card_is_removable(mmc))
+ !(host->mmc->caps & MMC_CAP_NONREMOVABLE))
mmc->caps |= MMC_CAP_NEEDS_POLL;
/* Any UHS-I mode in caps implies SDR12 and SDR25 support. */
@@ -2837,6 +2857,30 @@ int sdhci_add_host(struct sdhci_host *host)
SDHCI_RETUNING_MODE_SHIFT;
ocr_avail = 0;
+
+ host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
+ if (IS_ERR(host->vmmc)) {
+ pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
+ host->vmmc = NULL;
+ }
+
+#ifdef CONFIG_REGULATOR
+ if (host->vmmc) {
+ ret = regulator_is_supported_voltage(host->vmmc, 3300000,
+ 3300000);
+ if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
+ caps[0] &= ~SDHCI_CAN_VDD_330;
+ ret = regulator_is_supported_voltage(host->vmmc, 3000000,
+ 3000000);
+ if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300)))
+ caps[0] &= ~SDHCI_CAN_VDD_300;
+ ret = regulator_is_supported_voltage(host->vmmc, 1800000,
+ 1800000);
+ if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180)))
+ caps[0] &= ~SDHCI_CAN_VDD_180;
+ }
+#endif /* CONFIG_REGULATOR */
+
/*
* According to SD Host Controller spec v3.00, if the Host System
* can afford more than 150mA, Host Driver should set XPC to 1. Also
@@ -2845,55 +2889,45 @@ int sdhci_add_host(struct sdhci_host *host)
* value.
*/
max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT);
+ if (!max_current_caps && host->vmmc) {
+ u32 curr = regulator_get_current_limit(host->vmmc);
+ if (curr > 0) {
+
+ /* convert to SDHCI_MAX_CURRENT format */
+ curr = curr/1000; /* convert to mA */
+ curr = curr/SDHCI_MAX_CURRENT_MULTIPLIER;
+
+ curr = min_t(u32, curr, SDHCI_MAX_CURRENT_LIMIT);
+ max_current_caps =
+ (curr << SDHCI_MAX_CURRENT_330_SHIFT) |
+ (curr << SDHCI_MAX_CURRENT_300_SHIFT) |
+ (curr << SDHCI_MAX_CURRENT_180_SHIFT);
+ }
+ }
if (caps[0] & SDHCI_CAN_VDD_330) {
- int max_current_330;
-
ocr_avail |= MMC_VDD_32_33 | MMC_VDD_33_34;
- max_current_330 = ((max_current_caps &
+ mmc->max_current_330 = ((max_current_caps &
SDHCI_MAX_CURRENT_330_MASK) >>
SDHCI_MAX_CURRENT_330_SHIFT) *
SDHCI_MAX_CURRENT_MULTIPLIER;
-
- if (max_current_330 > 150)
- mmc->caps |= MMC_CAP_SET_XPC_330;
}
if (caps[0] & SDHCI_CAN_VDD_300) {
- int max_current_300;
-
ocr_avail |= MMC_VDD_29_30 | MMC_VDD_30_31;
- max_current_300 = ((max_current_caps &
+ mmc->max_current_300 = ((max_current_caps &
SDHCI_MAX_CURRENT_300_MASK) >>
SDHCI_MAX_CURRENT_300_SHIFT) *
SDHCI_MAX_CURRENT_MULTIPLIER;
-
- if (max_current_300 > 150)
- mmc->caps |= MMC_CAP_SET_XPC_300;
}
if (caps[0] & SDHCI_CAN_VDD_180) {
- int max_current_180;
-
ocr_avail |= MMC_VDD_165_195;
- max_current_180 = ((max_current_caps &
+ mmc->max_current_180 = ((max_current_caps &
SDHCI_MAX_CURRENT_180_MASK) >>
SDHCI_MAX_CURRENT_180_SHIFT) *
SDHCI_MAX_CURRENT_MULTIPLIER;
-
- if (max_current_180 > 150)
- mmc->caps |= MMC_CAP_SET_XPC_180;
-
- /* Maximum current capabilities of the host at 1.8V */
- if (max_current_180 >= 800)
- mmc->caps |= MMC_CAP_MAX_CURRENT_800;
- else if (max_current_180 >= 600)
- mmc->caps |= MMC_CAP_MAX_CURRENT_600;
- else if (max_current_180 >= 400)
- mmc->caps |= MMC_CAP_MAX_CURRENT_400;
- else
- mmc->caps |= MMC_CAP_MAX_CURRENT_200;
}
mmc->ocr_avail = ocr_avail;
@@ -2992,13 +3026,10 @@ int sdhci_add_host(struct sdhci_host *host)
ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
mmc_hostname(mmc), host);
- if (ret)
+ if (ret) {
+ pr_err("%s: Failed to request IRQ %d: %d\n",
+ mmc_hostname(mmc), host->irq, ret);
goto untasklet;
-
- host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
- if (IS_ERR(host->vmmc)) {
- pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
- host->vmmc = NULL;
}
sdhci_init(host, 0);
@@ -3016,8 +3047,11 @@ int sdhci_add_host(struct sdhci_host *host)
host->led.brightness_set = sdhci_led_control;
ret = led_classdev_register(mmc_dev(mmc), &host->led);
- if (ret)
+ if (ret) {
+ pr_err("%s: Failed to register LED device: %d\n",
+ mmc_hostname(mmc), ret);
goto reset;
+ }
#endif
mmiowb();
@@ -3081,8 +3115,6 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
free_irq(host->irq, host);
del_timer_sync(&host->timer);
- if (host->version >= SDHCI_SPEC_300)
- del_timer_sync(&host->tuning_timer);
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->finish_tasklet);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index f761f23d2a28..97653ea8942b 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -205,6 +205,7 @@
#define SDHCI_CAPABILITIES_1 0x44
#define SDHCI_MAX_CURRENT 0x48
+#define SDHCI_MAX_CURRENT_LIMIT 0xFF
#define SDHCI_MAX_CURRENT_330_MASK 0x0000FF
#define SDHCI_MAX_CURRENT_330_SHIFT 0
#define SDHCI_MAX_CURRENT_300_MASK 0x00FF00
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 724b35e85a26..5d8142773fac 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -54,6 +54,8 @@
#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sh_mmcif.h>
+#include <linux/mmc/slot-gpio.h>
+#include <linux/mod_devicetable.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/pm_qos.h>
@@ -211,8 +213,6 @@ struct sh_mmcif_host {
struct mmc_host *mmc;
struct mmc_request *mrq;
struct platform_device *pd;
- struct sh_dmae_slave dma_slave_tx;
- struct sh_dmae_slave dma_slave_rx;
struct clk *hclk;
unsigned int clk;
int bus_width;
@@ -371,56 +371,69 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
desc, cookie);
}
-static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
-{
- dev_dbg(chan->device->dev, "%s: slave data %p\n", __func__, arg);
- chan->private = arg;
- return true;
-}
-
static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
struct sh_mmcif_plat_data *pdata)
{
- struct sh_dmae_slave *tx, *rx;
+ struct resource *res = platform_get_resource(host->pd, IORESOURCE_MEM, 0);
+ struct dma_slave_config cfg;
+ dma_cap_mask_t mask;
+ int ret;
+
host->dma_active = false;
+ if (!pdata)
+ return;
+
+ if (pdata->slave_id_tx <= 0 || pdata->slave_id_rx <= 0)
+ return;
+
/* We can only either use DMA for both Tx and Rx or not use it at all */
- if (pdata->dma) {
- dev_warn(&host->pd->dev,
- "Update your platform to use embedded DMA slave IDs\n");
- tx = &pdata->dma->chan_priv_tx;
- rx = &pdata->dma->chan_priv_rx;
- } else {
- tx = &host->dma_slave_tx;
- tx->slave_id = pdata->slave_id_tx;
- rx = &host->dma_slave_rx;
- rx->slave_id = pdata->slave_id_rx;
- }
- if (tx->slave_id > 0 && rx->slave_id > 0) {
- dma_cap_mask_t mask;
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
+ host->chan_tx = dma_request_channel(mask, shdma_chan_filter,
+ (void *)pdata->slave_id_tx);
+ dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
+ host->chan_tx);
- host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
- dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
- host->chan_tx);
+ if (!host->chan_tx)
+ return;
- if (!host->chan_tx)
- return;
+ cfg.slave_id = pdata->slave_id_tx;
+ cfg.direction = DMA_MEM_TO_DEV;
+ cfg.dst_addr = res->start + MMCIF_CE_DATA;
+ cfg.src_addr = 0;
+ ret = dmaengine_slave_config(host->chan_tx, &cfg);
+ if (ret < 0)
+ goto ecfgtx;
- host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
- dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
- host->chan_rx);
+ host->chan_rx = dma_request_channel(mask, shdma_chan_filter,
+ (void *)pdata->slave_id_rx);
+ dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
+ host->chan_rx);
- if (!host->chan_rx) {
- dma_release_channel(host->chan_tx);
- host->chan_tx = NULL;
- return;
- }
+ if (!host->chan_rx)
+ goto erqrx;
- init_completion(&host->dma_complete);
- }
+ cfg.slave_id = pdata->slave_id_rx;
+ cfg.direction = DMA_DEV_TO_MEM;
+ cfg.dst_addr = 0;
+ cfg.src_addr = res->start + MMCIF_CE_DATA;
+ ret = dmaengine_slave_config(host->chan_rx, &cfg);
+ if (ret < 0)
+ goto ecfgrx;
+
+ init_completion(&host->dma_complete);
+
+ return;
+
+ecfgrx:
+ dma_release_channel(host->chan_rx);
+ host->chan_rx = NULL;
+erqrx:
+ecfgtx:
+ dma_release_channel(host->chan_tx);
+ host->chan_tx = NULL;
}
static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
@@ -444,13 +457,14 @@ static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
{
struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
+ bool sup_pclk = p ? p->sup_pclk : false;
sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR);
if (!clk)
return;
- if (p->sup_pclk && clk == host->clk)
+ if (sup_pclk && clk == host->clk)
sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK);
else
sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR &
@@ -892,21 +906,15 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
switch (mrq->cmd->opcode) {
/* MMCIF does not support SD/SDIO command */
- case SD_IO_SEND_OP_COND:
+ case MMC_SLEEP_AWAKE: /* = SD_IO_SEND_OP_COND (5) */
+ case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
+ if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR)
+ break;
case MMC_APP_CMD:
host->state = STATE_IDLE;
mrq->cmd->error = -ETIMEDOUT;
mmc_request_done(mmc, mrq);
return;
- case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
- if (!mrq->data) {
- /* send_if_cond cmd (not support) */
- host->state = STATE_IDLE;
- mrq->cmd->error = -ETIMEDOUT;
- mmc_request_done(mmc, mrq);
- return;
- }
- break;
default:
break;
}
@@ -916,10 +924,35 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
sh_mmcif_start_cmd(host, mrq);
}
+static int sh_mmcif_clk_update(struct sh_mmcif_host *host)
+{
+ int ret = clk_enable(host->hclk);
+
+ if (!ret) {
+ host->clk = clk_get_rate(host->hclk);
+ host->mmc->f_max = host->clk / 2;
+ host->mmc->f_min = host->clk / 512;
+ }
+
+ return ret;
+}
+
+static void sh_mmcif_set_power(struct sh_mmcif_host *host, struct mmc_ios *ios)
+{
+ struct sh_mmcif_plat_data *pd = host->pd->dev.platform_data;
+ struct mmc_host *mmc = host->mmc;
+
+ if (pd && pd->set_pwr)
+ pd->set_pwr(host->pd, ios->power_mode != MMC_POWER_OFF);
+ if (!IS_ERR(mmc->supply.vmmc))
+ /* Errors ignored... */
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc,
+ ios->power_mode ? ios->vdd : 0);
+}
+
static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
- struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
@@ -937,6 +970,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
sh_mmcif_request_dma(host, host->pd->dev.platform_data);
host->card_present = true;
}
+ sh_mmcif_set_power(host, ios);
} else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {
/* clock stop */
sh_mmcif_clock_control(host, 0);
@@ -948,9 +982,10 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
if (host->power) {
pm_runtime_put(&host->pd->dev);
+ clk_disable(host->hclk);
host->power = false;
- if (p->down_pwr && ios->power_mode == MMC_POWER_OFF)
- p->down_pwr(host->pd);
+ if (ios->power_mode == MMC_POWER_OFF)
+ sh_mmcif_set_power(host, ios);
}
host->state = STATE_IDLE;
return;
@@ -958,8 +993,7 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (ios->clock) {
if (!host->power) {
- if (p->set_pwr)
- p->set_pwr(host->pd, ios->power_mode);
+ sh_mmcif_clk_update(host);
pm_runtime_get_sync(&host->pd->dev);
host->power = true;
sh_mmcif_sync_reset(host);
@@ -975,8 +1009,12 @@ static int sh_mmcif_get_cd(struct mmc_host *mmc)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
+ int ret = mmc_gpio_get_cd(mmc);
+
+ if (ret >= 0)
+ return ret;
- if (!p->get_cd)
+ if (!p || !p->get_cd)
return -ENOSYS;
else
return p->get_cd(host->pd);
@@ -1242,12 +1280,28 @@ static void mmcif_timeout_work(struct work_struct *work)
mmc_request_done(host->mmc, mrq);
}
+static void sh_mmcif_init_ocr(struct sh_mmcif_host *host)
+{
+ struct sh_mmcif_plat_data *pd = host->pd->dev.platform_data;
+ struct mmc_host *mmc = host->mmc;
+
+ mmc_regulator_get_supply(mmc);
+
+ if (!pd)
+ return;
+
+ if (!mmc->ocr_avail)
+ mmc->ocr_avail = pd->ocr;
+ else if (pd->ocr)
+ dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n");
+}
+
static int __devinit sh_mmcif_probe(struct platform_device *pdev)
{
int ret = 0, irq[2];
struct mmc_host *mmc;
struct sh_mmcif_host *host;
- struct sh_mmcif_plat_data *pd;
+ struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
struct resource *res;
void __iomem *reg;
char clk_name[8];
@@ -1268,42 +1322,26 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "ioremap error.\n");
return -ENOMEM;
}
- pd = pdev->dev.platform_data;
- if (!pd) {
- dev_err(&pdev->dev, "sh_mmcif plat data error.\n");
- ret = -ENXIO;
- goto clean_up;
- }
+
mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
- goto clean_up;
+ goto ealloch;
}
host = mmc_priv(mmc);
host->mmc = mmc;
host->addr = reg;
host->timeout = 1000;
- snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id);
- host->hclk = clk_get(&pdev->dev, clk_name);
- if (IS_ERR(host->hclk)) {
- dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
- ret = PTR_ERR(host->hclk);
- goto clean_up1;
- }
- clk_enable(host->hclk);
- host->clk = clk_get_rate(host->hclk);
host->pd = pdev;
spin_lock_init(&host->lock);
mmc->ops = &sh_mmcif_ops;
- mmc->f_max = host->clk / 2;
- mmc->f_min = host->clk / 512;
- if (pd->ocr)
- mmc->ocr_avail = pd->ocr;
+ sh_mmcif_init_ocr(host);
+
mmc->caps = MMC_CAP_MMC_HIGHSPEED;
- if (pd->caps)
+ if (pd && pd->caps)
mmc->caps |= pd->caps;
mmc->max_segs = 32;
mmc->max_blk_size = 512;
@@ -1311,34 +1349,52 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
mmc->max_blk_count = mmc->max_req_size / mmc->max_blk_size;
mmc->max_seg_size = mmc->max_req_size;
- sh_mmcif_sync_reset(host);
platform_set_drvdata(pdev, host);
pm_runtime_enable(&pdev->dev);
host->power = false;
+ snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id);
+ host->hclk = clk_get(&pdev->dev, clk_name);
+ if (IS_ERR(host->hclk)) {
+ ret = PTR_ERR(host->hclk);
+ dev_err(&pdev->dev, "cannot get clock \"%s\": %d\n", clk_name, ret);
+ goto eclkget;
+ }
+ ret = sh_mmcif_clk_update(host);
+ if (ret < 0)
+ goto eclkupdate;
+
ret = pm_runtime_resume(&pdev->dev);
if (ret < 0)
- goto clean_up2;
+ goto eresume;
INIT_DELAYED_WORK(&host->timeout_work, mmcif_timeout_work);
+ 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);
if (ret) {
dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n");
- goto clean_up3;
+ 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 clean_up4;
+ goto ereqirq1;
+ }
+
+ if (pd && pd->use_cd_gpio) {
+ ret = mmc_gpio_request_cd(mmc, pd->cd_gpio);
+ if (ret < 0)
+ goto erqcd;
}
+ clk_disable(host->hclk);
ret = mmc_add_host(mmc);
if (ret < 0)
- goto clean_up5;
+ goto emmcaddh;
dev_pm_qos_expose_latency_limit(&pdev->dev, 100);
@@ -1347,33 +1403,42 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev)
sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff);
return ret;
-clean_up5:
+emmcaddh:
+ if (pd && pd->use_cd_gpio)
+ mmc_gpio_free_cd(mmc);
+erqcd:
free_irq(irq[1], host);
-clean_up4:
+ereqirq1:
free_irq(irq[0], host);
-clean_up3:
+ereqirq0:
pm_runtime_suspend(&pdev->dev);
-clean_up2:
- pm_runtime_disable(&pdev->dev);
+eresume:
clk_disable(host->hclk);
-clean_up1:
+eclkupdate:
+ clk_put(host->hclk);
+eclkget:
+ pm_runtime_disable(&pdev->dev);
mmc_free_host(mmc);
-clean_up:
- if (reg)
- iounmap(reg);
+ealloch:
+ iounmap(reg);
return ret;
}
static int __devexit 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;
+ clk_enable(host->hclk);
pm_runtime_get_sync(&pdev->dev);
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);
@@ -1395,9 +1460,9 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
- clk_disable(host->hclk);
mmc_free_host(host->mmc);
pm_runtime_put_sync(&pdev->dev);
+ clk_disable(host->hclk);
pm_runtime_disable(&pdev->dev);
return 0;
@@ -1406,24 +1471,18 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev)
#ifdef CONFIG_PM
static int sh_mmcif_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct sh_mmcif_host *host = platform_get_drvdata(pdev);
+ struct sh_mmcif_host *host = dev_get_drvdata(dev);
int ret = mmc_suspend_host(host->mmc);
- if (!ret) {
+ if (!ret)
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
- clk_disable(host->hclk);
- }
return ret;
}
static int sh_mmcif_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct sh_mmcif_host *host = platform_get_drvdata(pdev);
-
- clk_enable(host->hclk);
+ struct sh_mmcif_host *host = dev_get_drvdata(dev);
return mmc_resume_host(host->mmc);
}
@@ -1432,6 +1491,12 @@ static int sh_mmcif_resume(struct device *dev)
#define sh_mmcif_resume NULL
#endif /* CONFIG_PM */
+static const struct of_device_id mmcif_of_match[] = {
+ { .compatible = "renesas,sh-mmcif" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mmcif_of_match);
+
static const struct dev_pm_ops sh_mmcif_dev_pm_ops = {
.suspend = sh_mmcif_suspend,
.resume = sh_mmcif_resume,
@@ -1443,6 +1508,8 @@ static struct platform_driver sh_mmcif_driver = {
.driver = {
.name = DRIVER_NAME,
.pm = &sh_mmcif_dev_pm_ops,
+ .owner = THIS_MODULE,
+ .of_match_table = mmcif_of_match,
},
};
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 934b68e9efc3..0bdc146178db 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -21,6 +21,7 @@
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mmc/host.h>
@@ -39,22 +40,39 @@ struct sh_mobile_sdhi {
struct tmio_mmc_dma dma_priv;
};
+static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int *f)
+{
+ struct mmc_host *mmc = dev_get_drvdata(&pdev->dev);
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
+ int ret = clk_enable(priv->clk);
+ if (ret < 0)
+ return ret;
+
+ *f = clk_get_rate(priv->clk);
+ return 0;
+}
+
+static void sh_mobile_sdhi_clk_disable(struct platform_device *pdev)
+{
+ struct mmc_host *mmc = dev_get_drvdata(&pdev->dev);
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
+ clk_disable(priv->clk);
+}
+
static void sh_mobile_sdhi_set_pwr(struct platform_device *pdev, int state)
{
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
- if (p && p->set_pwr)
- p->set_pwr(pdev, state);
+ p->set_pwr(pdev, state);
}
static int sh_mobile_sdhi_get_cd(struct platform_device *pdev)
{
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
- if (p && p->get_cd)
- return p->get_cd(pdev);
- else
- return -ENOSYS;
+ return p->get_cd(pdev);
}
static int sh_mobile_sdhi_wait_idle(struct tmio_mmc_host *host)
@@ -116,12 +134,14 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
}
mmc_data = &priv->mmc_data;
- p->pdata = mmc_data;
- if (p->init) {
- ret = p->init(pdev, &sdhi_ops);
- if (ret)
- goto einit;
+ if (p) {
+ p->pdata = mmc_data;
+ if (p->init) {
+ ret = p->init(pdev, &sdhi_ops);
+ if (ret)
+ goto einit;
+ }
}
snprintf(clk_name, sizeof(clk_name), "sdhi%d", pdev->id);
@@ -132,9 +152,8 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
goto eclkget;
}
- mmc_data->hclk = clk_get_rate(priv->clk);
- mmc_data->set_pwr = sh_mobile_sdhi_set_pwr;
- mmc_data->get_cd = sh_mobile_sdhi_get_cd;
+ mmc_data->clk_enable = sh_mobile_sdhi_clk_enable;
+ mmc_data->clk_disable = sh_mobile_sdhi_clk_disable;
mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
if (p) {
mmc_data->flags = p->tmio_flags;
@@ -142,13 +161,18 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
mmc_data->write16_hook = sh_mobile_sdhi_write16_hook;
mmc_data->ocr_mask = p->tmio_ocr_mask;
mmc_data->capabilities |= p->tmio_caps;
+ mmc_data->capabilities2 |= p->tmio_caps2;
mmc_data->cd_gpio = p->cd_gpio;
+ if (p->set_pwr)
+ mmc_data->set_pwr = sh_mobile_sdhi_set_pwr;
+ if (p->get_cd)
+ mmc_data->get_cd = sh_mobile_sdhi_get_cd;
if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
- priv->param_tx.slave_id = p->dma_slave_tx;
- priv->param_rx.slave_id = p->dma_slave_rx;
- priv->dma_priv.chan_priv_tx = &priv->param_tx;
- priv->dma_priv.chan_priv_rx = &priv->param_rx;
+ priv->param_tx.shdma_slave.slave_id = p->dma_slave_tx;
+ priv->param_rx.shdma_slave.slave_id = p->dma_slave_rx;
+ priv->dma_priv.chan_priv_tx = &priv->param_tx.shdma_slave;
+ priv->dma_priv.chan_priv_rx = &priv->param_rx.shdma_slave;
priv->dma_priv.alignment_shift = 1; /* 2-byte alignment */
mmc_data->dma = &priv->dma_priv;
}
@@ -248,7 +272,7 @@ eirq_card_detect:
eprobe:
clk_put(priv->clk);
eclkget:
- if (p->cleanup)
+ if (p && p->cleanup)
p->cleanup(pdev);
einit:
kfree(priv);
@@ -263,7 +287,8 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
int i = 0, irq;
- p->pdata = NULL;
+ if (p)
+ p->pdata = NULL;
tmio_mmc_host_remove(host);
@@ -276,7 +301,7 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
clk_put(priv->clk);
- if (p->cleanup)
+ if (p && p->cleanup)
p->cleanup(pdev);
kfree(priv);
@@ -291,11 +316,18 @@ static const struct dev_pm_ops tmio_mmc_dev_pm_ops = {
.runtime_resume = tmio_mmc_host_runtime_resume,
};
+static const struct of_device_id sh_mobile_sdhi_of_match[] = {
+ { .compatible = "renesas,shmobile-sdhi" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match);
+
static struct platform_driver sh_mobile_sdhi_driver = {
.driver = {
.name = "sh_mobile_sdhi",
.owner = THIS_MODULE,
.pm = &tmio_mmc_dev_pm_ops,
+ .of_match_table = sh_mobile_sdhi_of_match,
},
.probe = sh_mobile_sdhi_probe,
.remove = __devexit_p(sh_mobile_sdhi_remove),
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 9a7996ade58e..0d8a9bbe30be 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -34,8 +34,9 @@
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/mfd/tmio.h>
-#include <linux/mmc/cd-gpio.h>
#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/slot-gpio.h>
#include <linux/mmc/tmio.h>
#include <linux/module.h>
#include <linux/pagemap.h>
@@ -305,8 +306,8 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command
int c = cmd->opcode;
u32 irq_mask = TMIO_MASK_CMD;
- /* Command 12 is handled by hardware */
- if (cmd->opcode == 12 && !cmd->arg) {
+ /* CMD12 is handled by hardware */
+ if (cmd->opcode == MMC_STOP_TRANSMISSION && !cmd->arg) {
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0x001);
return 0;
}
@@ -449,7 +450,7 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host)
}
if (stop) {
- if (stop->opcode == 12 && !stop->arg)
+ if (stop->opcode == MMC_STOP_TRANSMISSION && !stop->arg)
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0x000);
else
BUG();
@@ -751,6 +752,34 @@ fail:
mmc_request_done(mmc, mrq);
}
+static int tmio_mmc_clk_update(struct mmc_host *mmc)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ struct tmio_mmc_data *pdata = host->pdata;
+ int ret;
+
+ if (!pdata->clk_enable)
+ return -ENOTSUPP;
+
+ ret = pdata->clk_enable(host->pdev, &mmc->f_max);
+ if (!ret)
+ mmc->f_min = mmc->f_max / 512;
+
+ return ret;
+}
+
+static void tmio_mmc_set_power(struct tmio_mmc_host *host, struct mmc_ios *ios)
+{
+ struct mmc_host *mmc = host->mmc;
+
+ if (host->set_pwr)
+ host->set_pwr(host->pdev, ios->power_mode != MMC_POWER_OFF);
+ if (!IS_ERR(mmc->supply.vmmc))
+ /* Errors ignored... */
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc,
+ ios->power_mode ? ios->vdd : 0);
+}
+
/* Set MMC clock / power.
* Note: This controller uses a simple divider scheme therefore it cannot
* run a MMC card at full speed (20MHz). The max clock is 24MHz on SD, but as
@@ -797,32 +826,37 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
*/
if (ios->power_mode == MMC_POWER_ON && ios->clock) {
if (!host->power) {
+ tmio_mmc_clk_update(mmc);
pm_runtime_get_sync(dev);
host->power = true;
}
tmio_mmc_set_clock(host, ios->clock);
/* power up SD bus */
- if (host->set_pwr)
- host->set_pwr(host->pdev, 1);
+ tmio_mmc_set_power(host, ios);
/* start bus clock */
tmio_mmc_clk_start(host);
} else if (ios->power_mode != MMC_POWER_UP) {
- if (host->set_pwr && ios->power_mode == MMC_POWER_OFF)
- host->set_pwr(host->pdev, 0);
+ if (ios->power_mode == MMC_POWER_OFF)
+ tmio_mmc_set_power(host, ios);
if (host->power) {
+ struct tmio_mmc_data *pdata = host->pdata;
+ tmio_mmc_clk_stop(host);
host->power = false;
pm_runtime_put(dev);
+ if (pdata->clk_disable)
+ pdata->clk_disable(host->pdev);
}
- tmio_mmc_clk_stop(host);
}
- switch (ios->bus_width) {
- case MMC_BUS_WIDTH_1:
- sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0);
- break;
- case MMC_BUS_WIDTH_4:
- sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0);
- break;
+ if (host->power) {
+ switch (ios->bus_width) {
+ case MMC_BUS_WIDTH_1:
+ sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0);
+ break;
+ case MMC_BUS_WIDTH_4:
+ sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0);
+ break;
+ }
}
/* Let things settle. delay taken from winCE driver */
@@ -841,6 +875,9 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
struct tmio_mmc_data *pdata = host->pdata;
+ int ret = mmc_gpio_get_ro(mmc);
+ if (ret >= 0)
+ return ret;
return !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
(sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
@@ -850,6 +887,9 @@ static int tmio_mmc_get_cd(struct mmc_host *mmc)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
struct tmio_mmc_data *pdata = host->pdata;
+ int ret = mmc_gpio_get_cd(mmc);
+ if (ret >= 0)
+ return ret;
if (!pdata->get_cd)
return -ENOSYS;
@@ -865,6 +905,19 @@ static const struct mmc_host_ops tmio_mmc_ops = {
.enable_sdio_irq = tmio_mmc_enable_sdio_irq,
};
+static void tmio_mmc_init_ocr(struct tmio_mmc_host *host)
+{
+ struct tmio_mmc_data *pdata = host->pdata;
+ struct mmc_host *mmc = host->mmc;
+
+ mmc_regulator_get_supply(mmc);
+
+ if (!mmc->ocr_avail)
+ mmc->ocr_avail = pdata->ocr_mask ? : MMC_VDD_32_33 | MMC_VDD_33_34;
+ else if (pdata->ocr_mask)
+ dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n");
+}
+
int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
struct platform_device *pdev,
struct tmio_mmc_data *pdata)
@@ -904,18 +957,14 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
mmc->ops = &tmio_mmc_ops;
mmc->caps = MMC_CAP_4_BIT_DATA | pdata->capabilities;
- mmc->f_max = pdata->hclk;
- mmc->f_min = mmc->f_max / 512;
+ mmc->caps2 = pdata->capabilities2;
mmc->max_segs = 32;
mmc->max_blk_size = 512;
mmc->max_blk_count = (PAGE_CACHE_SIZE / mmc->max_blk_size) *
mmc->max_segs;
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
mmc->max_seg_size = mmc->max_req_size;
- if (pdata->ocr_mask)
- mmc->ocr_avail = pdata->ocr_mask;
- else
- mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+ tmio_mmc_init_ocr(_host);
_host->native_hotplug = !(pdata->flags & TMIO_MMC_USE_GPIO_CD ||
mmc->caps & MMC_CAP_NEEDS_POLL ||
@@ -927,6 +976,11 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
if (ret < 0)
goto pm_disable;
+ if (tmio_mmc_clk_update(mmc) < 0) {
+ mmc->f_max = pdata->hclk;
+ mmc->f_min = mmc->f_max / 512;
+ }
+
/*
* There are 4 different scenarios for the card detection:
* 1) an external gpio irq handles the cd (best for power savings)
@@ -937,7 +991,6 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
* While we increment the runtime PM counter for all scenarios when
* the mmc core activates us by calling an appropriate set_ios(), we
* must additionally ensure that in case 2) the tmio mmc hardware stays
- * additionally ensure that in case 2) the tmio mmc hardware stays
* powered on during runtime for the card detection to work.
*/
if (_host->native_hotplug)
@@ -948,6 +1001,17 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
_host->sdcard_irq_mask = sd_ctrl_read32(_host, CTL_IRQ_MASK);
tmio_mmc_disable_mmc_irqs(_host, TMIO_MASK_ALL);
+
+ /* Unmask the IRQs we want to know about */
+ if (!_host->chan_rx)
+ irq_mask |= TMIO_MASK_READOP;
+ if (!_host->chan_tx)
+ irq_mask |= TMIO_MASK_WRITEOP;
+ if (!_host->native_hotplug)
+ irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
+
+ _host->sdcard_irq_mask &= ~irq_mask;
+
if (pdata->flags & TMIO_MMC_SDIO_IRQ)
tmio_mmc_enable_sdio_irq(mmc, 0);
@@ -961,22 +1025,18 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host,
/* See if we also get DMA */
tmio_mmc_request_dma(_host, pdata);
- mmc_add_host(mmc);
+ ret = mmc_add_host(mmc);
+ if (pdata->clk_disable)
+ pdata->clk_disable(pdev);
+ if (ret < 0) {
+ tmio_mmc_host_remove(_host);
+ return ret;
+ }
dev_pm_qos_expose_latency_limit(&pdev->dev, 100);
- /* Unmask the IRQs we want to know about */
- if (!_host->chan_rx)
- irq_mask |= TMIO_MASK_READOP;
- if (!_host->chan_tx)
- irq_mask |= TMIO_MASK_WRITEOP;
- if (!_host->native_hotplug)
- irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT);
-
- tmio_mmc_enable_mmc_irqs(_host, irq_mask);
-
if (pdata->flags & TMIO_MMC_USE_GPIO_CD) {
- ret = mmc_cd_gpio_request(mmc, pdata->cd_gpio);
+ ret = mmc_gpio_request_cd(mmc, pdata->cd_gpio);
if (ret < 0) {
tmio_mmc_host_remove(_host);
return ret;
@@ -1008,7 +1068,7 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
* This means we can miss a card-eject, but this is anyway
* possible, because of delayed processing of hotplug events.
*/
- mmc_cd_gpio_free(mmc);
+ mmc_gpio_free_cd(mmc);
if (!host->native_hotplug)
pm_runtime_get_sync(&pdev->dev);