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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-05 10:18:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-05 10:18:21 -0700
commit0a053e8c71d666daf30da2d407147b1293923d8b (patch)
tree9ba3967845db9053cb2ca045f01a9454eb5e6230
parent601cc11d054ae4b5e9b5babec3d8e4667a2cb9b5 (diff)
parent32ab83a56fdf42f543b86c349143c2a86ead9707 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (42 commits) atmel-mci: fix sdc_reg typo tmio_mmc: add maintainer mmc: Add OpenFirmware bindings for SDHCI driver sdhci: Add quirk for forcing maximum block size to 2048 bytes sdhci: Add quirk for controllers that need IRQ re-init after reset sdhci: Add quirk for controllers that need small delays for PIO sdhci: Add set_clock callback and a quirk for nonstandard clocks sdhci: Add get_{max,timeout}_clock callbacks sdhci: Add support for hosts reporting inverted write-protect state sdhci: Add support for card-detection polling sdhci: Enable only relevant (DMA/PIO) interrupts during transfers sdhci: Split card-detection IRQs management from sdhci_init() sdhci: Add support for bus-specific IO memory accessors mmc_spi: adjust for delayed data token response omap_hsmmc: Wait for SDBP omap_hsmmc: Fix MMC3 dma omap_hsmmc: Disable SDBP at suspend omap_hsmmc: Do not prefix slot name omap_hsmmc: Allow cover switch to cause rescan omap_hsmmc: Add 8-bit bus width mode support ...
Diffstat
-rw-r--r--MAINTAINERS20
-rw-r--r--drivers/mmc/card/block.c2
-rw-r--r--drivers/mmc/core/bus.c8
-rw-r--r--drivers/mmc/core/core.c18
-rw-r--r--drivers/mmc/core/debugfs.c67
-rw-r--r--drivers/mmc/core/sdio_cis.c8
-rw-r--r--drivers/mmc/core/sdio_ops.c8
-rw-r--r--drivers/mmc/host/Kconfig29
-rw-r--r--drivers/mmc/host/Makefile2
-rw-r--r--drivers/mmc/host/atmel-mci.c2
-rw-r--r--drivers/mmc/host/mmc_spi.c40
-rw-r--r--drivers/mmc/host/mvsdio.c885
-rw-r--r--drivers/mmc/host/mvsdio.h190
-rw-r--r--drivers/mmc/host/omap_hsmmc.c355
-rw-r--r--drivers/mmc/host/sdhci-of.c309
-rw-r--r--drivers/mmc/host/sdhci.c317
-rw-r--r--drivers/mmc/host/sdhci.h112
-rw-r--r--drivers/mmc/host/tmio_mmc.c6
-rw-r--r--drivers/mmc/host/tmio_mmc.h3
19 files changed, 2109 insertions, 272 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 6360b9b9bbb..9e2eb319113 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2924,6 +2924,12 @@ M: buytenh@marvell.com
L: netdev@vger.kernel.org
S: Supported
+MARVELL SOC MMC/SD/SDIO CONTROLLER DRIVER
+P: Nicolas Pitre
+M: nico@cam.org
+L: linux-kernel@vger.kernel.org
+S: Maintained
+
MARVELL YUKON / SYSKONNECT DRIVER
P: Mirko Lindner
M: mlindner@syskonnect.de
@@ -3916,7 +3922,14 @@ S: Maintained
SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) DRIVER
P: Pierre Ossman
M: drzeus-sdhci@drzeus.cx
-L: sdhci-devel@list.drzeus.cx
+L: sdhci-devel@lists.ossman.eu
+S: Maintained
+
+SECURE DIGITAL HOST CONTROLLER INTERFACE, OPEN FIRMWARE BINDINGS (SDHCI-OF)
+P: Anton Vorontsov
+M: avorontsov@ru.mvista.com
+L: linuxppc-dev@ozlabs.org
+L: sdhci-devel@lists.ossman.eu
S: Maintained
SECURITY SUBSYSTEM
@@ -4394,6 +4407,11 @@ L: tlinux-users@tce.toshiba-dme.co.jp
W: http://www.buzzard.org.uk/toshiba/
S: Maintained
+TMIO MMC DRIVER
+P: Ian Molton
+M: ian@mnementh.co.uk
+S: Maintained
+
TPM DEVICE DRIVER
P: Debora Velarde
M: debora@linux.vnet.ibm.com
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 513eb09a638..fe8041e619e 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -41,6 +41,8 @@
#include "queue.h"
+MODULE_ALIAS("mmc:block");
+
/*
* max 8 partitions per card
*/
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index f210a8ee686..bdb165f9304 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -84,6 +84,14 @@ mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
}
retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card));
+ if (retval)
+ return retval;
+
+ /*
+ * Request the mmc_block device. Note: that this is a direct request
+ * for the module it carries no information as to what is inserted.
+ */
+ retval = add_uevent_var(env, "MODALIAS=mmc:block");
return retval;
}
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 1445ea8f10a..fa073ab3fa3 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -298,6 +298,21 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
data->timeout_clks = 0;
}
}
+ /*
+ * Some cards need very high timeouts if driven in SPI mode.
+ * The worst observed timeout was 900ms after writing a
+ * continuous stream of data until the internal logic
+ * overflowed.
+ */
+ if (mmc_host_is_spi(card->host)) {
+ if (data->flags & MMC_DATA_WRITE) {
+ if (data->timeout_ns < 1000000000)
+ data->timeout_ns = 1000000000; /* 1s */
+ } else {
+ if (data->timeout_ns < 100000000)
+ data->timeout_ns = 100000000; /* 100ms */
+ }
+ }
}
EXPORT_SYMBOL(mmc_set_data_timeout);
@@ -915,6 +930,7 @@ void mmc_stop_host(struct mmc_host *host)
spin_unlock_irqrestore(&host->lock, flags);
#endif
+ cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
mmc_bus_get(host);
@@ -942,6 +958,7 @@ void mmc_stop_host(struct mmc_host *host)
*/
int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
{
+ cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
mmc_bus_get(host);
@@ -975,6 +992,7 @@ int mmc_resume_host(struct mmc_host *host)
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
mmc_power_up(host);
+ mmc_select_voltage(host, host->ocr);
BUG_ON(!host->bus_ops->resume);
host->bus_ops->resume(host);
}
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 1237bb4c722..610dbd1fcc8 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -184,6 +184,68 @@ static int mmc_dbg_card_status_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get,
NULL, "%08llx\n");
+#define EXT_CSD_STR_LEN 1025
+
+static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
+{
+ struct mmc_card *card = inode->i_private;
+ char *buf;
+ ssize_t n = 0;
+ u8 *ext_csd;
+ int err, i;
+
+ buf = kmalloc(EXT_CSD_STR_LEN + 1, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ext_csd = kmalloc(512, GFP_KERNEL);
+ if (!ext_csd) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ mmc_claim_host(card->host);
+ err = mmc_send_ext_csd(card, ext_csd);
+ mmc_release_host(card->host);
+ if (err)
+ goto out_free;
+
+ for (i = 511; i >= 0; i--)
+ n += sprintf(buf + n, "%02x", ext_csd[i]);
+ n += sprintf(buf + n, "\n");
+ BUG_ON(n != EXT_CSD_STR_LEN);
+
+ filp->private_data = buf;
+ kfree(ext_csd);
+ return 0;
+
+out_free:
+ kfree(buf);
+ kfree(ext_csd);
+ return err;
+}
+
+static ssize_t mmc_ext_csd_read(struct file *filp, char __user *ubuf,
+ size_t cnt, loff_t *ppos)
+{
+ char *buf = filp->private_data;
+
+ return simple_read_from_buffer(ubuf, cnt, ppos,
+ buf, EXT_CSD_STR_LEN);
+}
+
+static int mmc_ext_csd_release(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+static struct file_operations mmc_dbg_ext_csd_fops = {
+ .open = mmc_ext_csd_open,
+ .read = mmc_ext_csd_read,
+ .release = mmc_ext_csd_release,
+};
+
void mmc_add_card_debugfs(struct mmc_card *card)
{
struct mmc_host *host = card->host;
@@ -211,6 +273,11 @@ void mmc_add_card_debugfs(struct mmc_card *card)
&mmc_dbg_card_status_fops))
goto err;
+ if (mmc_card_mmc(card))
+ if (!debugfs_create_file("ext_csd", S_IRUSR, root, card,
+ &mmc_dbg_ext_csd_fops))
+ goto err;
+
return;
err:
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 956bd767750..963f2937c5e 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -223,10 +223,18 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
if (tpl_code == 0xff)
break;
+ /* null entries have no link field or data */
+ if (tpl_code == 0x00)
+ continue;
+
ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
if (ret)
break;
+ /* a size of 0xff also means we're done */
+ if (tpl_link == 0xff)
+ break;
+
this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
if (!this)
return -ENOMEM;
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index c8fa095a448..4eb7825fd1a 100644
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -76,6 +76,10 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
BUG_ON(!card);
BUG_ON(fn > 7);
+ /* sanity check */
+ if (addr & ~0x1FFFF)
+ return -EINVAL;
+
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_IO_RW_DIRECT;
@@ -125,6 +129,10 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
WARN_ON(blocks == 0);
WARN_ON(blksz == 0);
+ /* sanity check */
+ if (addr & ~0x1FFFF)
+ return -EINVAL;
+
memset(&mrq, 0, sizeof(struct mmc_request));
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 6fbb246c40b..b4cf691f3f6 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -37,6 +37,13 @@ config MMC_SDHCI
If unsure, say N.
+config MMC_SDHCI_IO_ACCESSORS
+ bool
+ depends on MMC_SDHCI
+ help
+ This is silent Kconfig symbol that is selected by the drivers that
+ need to overwrite SDHCI IO memory accessors.
+
config MMC_SDHCI_PCI
tristate "SDHCI support on PCI bus"
depends on MMC_SDHCI && PCI
@@ -65,6 +72,17 @@ config MMC_RICOH_MMC
If unsure, say Y.
+config MMC_SDHCI_OF
+ tristate "SDHCI support on OpenFirmware platforms"
+ depends on MMC_SDHCI && PPC_OF
+ select MMC_SDHCI_IO_ACCESSORS
+ help
+ This selects the OF support for Secure Digital Host Controller
+ Interfaces. So far, only the Freescale eSDHC controller is known
+ to exist on OF platforms.
+
+ If unsure, say N.
+
config MMC_OMAP
tristate "TI OMAP Multimedia Card Interface support"
depends on ARCH_OMAP
@@ -171,6 +189,17 @@ config MMC_TIFM_SD
To compile this driver as a module, choose M here: the
module will be called tifm_sd.
+config MMC_MVSDIO
+ tristate "Marvell MMC/SD/SDIO host driver"
+ depends on PLAT_ORION
+ ---help---
+ This selects the Marvell SDIO host driver.
+ SDIO may currently be found on the Kirkwood 88F6281 and 88F6192
+ SoC controllers.
+
+ To compile this driver as a module, choose M here: the
+ module will be called mvsdio.
+
config MMC_SPI
tristate "MMC/SD/SDIO over SPI"
depends on SPI_MASTER && !HIGHMEM && HAS_DMA
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index dedec55861d..970a997620e 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_MMC_MXC) += mxcmmc.o
obj-$(CONFIG_MMC_SDHCI) += sdhci.o
obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
obj-$(CONFIG_MMC_RICOH_MMC) += ricoh_mmc.o
+obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o
obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
obj-$(CONFIG_MMC_OMAP) += omap.o
@@ -20,6 +21,7 @@ obj-$(CONFIG_MMC_OMAP_HS) += omap_hsmmc.o
obj-$(CONFIG_MMC_AT91) += at91_mci.o
obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o
obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
+obj-$(CONFIG_MMC_MVSDIO) += mvsdio.o
obj-$(CONFIG_MMC_SPI) += mmc_spi.o
ifeq ($(CONFIG_OF),y)
obj-$(CONFIG_MMC_SPI) += of_mmc_spi.o
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index e94e92001e7..cf6a100bb38 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -812,7 +812,7 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
slot->sdc_reg |= MCI_SDCBUS_1BIT;
break;
case MMC_BUS_WIDTH_4:
- slot->sdc_reg = MCI_SDCBUS_4BIT;
+ slot->sdc_reg |= MCI_SDCBUS_4BIT;
break;
}
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 87e211df68a..72f8bde4877 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -279,8 +279,11 @@ static int mmc_spi_response_get(struct mmc_spi_host *host,
* so it can always DMA directly into the target buffer.
* It'd probably be better to memcpy() the first chunk and
* avoid extra i/o calls...
+ *
+ * Note we check for more than 8 bytes, because in practice,
+ * some SD cards are slow...
*/
- for (i = 2; i < 9; i++) {
+ for (i = 2; i < 16; i++) {
value = mmc_spi_readbytes(host, 1);
if (value < 0)
goto done;
@@ -609,6 +612,7 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,
struct spi_device *spi = host->spi;
int status, i;
struct scratch *scratch = host->data;
+ u32 pattern;
if (host->mmc->use_spi_crc)
scratch->crc_val = cpu_to_be16(
@@ -636,8 +640,27 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,
* doesn't necessarily tell whether the write operation succeeded;
* it just says if the transmission was ok and whether *earlier*
* writes succeeded; see the standard.
+ *
+ * In practice, there are (even modern SDHC-)cards which are late
+ * in sending the response, and miss the time frame by a few bits,
+ * so we have to cope with this situation and check the response
+ * bit-by-bit. Arggh!!!
*/
- switch (SPI_MMC_RESPONSE_CODE(scratch->status[0])) {
+ pattern = scratch->status[0] << 24;
+ pattern |= scratch->status[1] << 16;
+ pattern |= scratch->status[2] << 8;
+ pattern |= scratch->status[3];
+
+ /* First 3 bit of pattern are undefined */
+ pattern |= 0xE0000000;
+
+ /* left-adjust to leading 0 bit */
+ while (pattern & 0x80000000)
+ pattern <<= 1;
+ /* right-adjust for pattern matching. Code is in bit 4..0 now. */
+ pattern >>= 27;
+
+ switch (pattern) {
case SPI_RESPONSE_ACCEPTED:
status = 0;
break;
@@ -668,8 +691,9 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,
/* Return when not busy. If we didn't collect that status yet,
* we'll need some more I/O.
*/
- for (i = 1; i < sizeof(scratch->status); i++) {
- if (scratch->status[i] != 0)
+ for (i = 4; i < sizeof(scratch->status); i++) {
+ /* card is non-busy if the most recent bit is 1 */
+ if (scratch->status[i] & 0x01)
return 0;
}
return mmc_spi_wait_unbusy(host, timeout);
@@ -1204,10 +1228,12 @@ static int mmc_spi_probe(struct spi_device *spi)
/* MMC and SD specs only seem to care that sampling is on the
* rising edge ... meaning SPI modes 0 or 3. So either SPI mode
- * should be legit. We'll use mode 0 since it seems to be a
- * bit less troublesome on some hardware ... unclear why.
+ * should be legit. We'll use mode 0 since the steady state is 0,
+ * which is appropriate for hotplugging, unless the platform data
+ * specify mode 3 (if hardware is not compatible to mode 0).
*/
- spi->mode = SPI_MODE_0;
+ if (spi->mode != SPI_MODE_3)
+ spi->mode = SPI_MODE_0;
spi->bits_per_word = 8;
status = spi_setup(spi);
diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
new file mode 100644
index 00000000000..b5c375d94ab
--- /dev/null
+++ b/drivers/mmc/host/mvsdio.c
@@ -0,0 +1,885 @@
+/*
+ * Marvell MMC/SD/SDIO driver
+ *
+ * Authors: Maen Suleiman, Nicolas Pitre
+ * Copyright (C) 2008-2009 Marvell Ltd.
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/mbus.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/scatterlist.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/mmc/host.h>
+
+#include <asm/sizes.h>
+#include <asm/unaligned.h>
+#include <plat/mvsdio.h>
+
+#include "mvsdio.h"
+
+#define DRIVER_NAME "mvsdio"
+
+static int maxfreq = MVSD_CLOCKRATE_MAX;
+static int nodma;
+
+struct mvsd_host {
+ void __iomem *base;
+ struct mmc_request *mrq;
+ spinlock_t lock;
+ unsigned int xfer_mode;
+ unsigned int intr_en;
+ unsigned int ctrl;
+ unsigned int pio_size;
+ void *pio_ptr;
+ unsigned int sg_frags;
+ unsigned int ns_per_clk;
+ unsigned int clock;
+ unsigned int base_clock;
+ struct timer_list timer;
+ struct mmc_host *mmc;
+ struct device *dev;
+ struct resource *res;
+ int irq;
+ int gpio_card_detect;
+ int gpio_write_protect;
+};
+
+#define mvsd_write(offs, val) writel(val, iobase + (offs))
+#define mvsd_read(offs) readl(iobase + (offs))
+
+static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data)
+{
+ void __iomem *iobase = host->base;
+ unsigned int tmout;
+ int tmout_index;
+
+ /* If timeout=0 then maximum timeout index is used. */
+ tmout = DIV_ROUND_UP(data->timeout_ns, host->ns_per_clk);
+ tmout += data->timeout_clks;
+ tmout_index = fls(tmout - 1) - 12;
+ if (tmout_index < 0)
+ tmout_index = 0;
+ if (tmout_index > MVSD_HOST_CTRL_TMOUT_MAX)
+ tmout_index = MVSD_HOST_CTRL_TMOUT_MAX;
+
+ dev_dbg(host->dev, "data %s at 0x%08x: blocks=%d blksz=%d tmout=%u (%d)\n",
+ (data->flags & MMC_DATA_READ) ? "read" : "write",
+ (u32)sg_virt(data->sg), data->blocks, data->blksz,
+ tmout, tmout_index);
+
+ host->ctrl &= ~MVSD_HOST_CTRL_TMOUT_MASK;
+ host->ctrl |= MVSD_HOST_CTRL_TMOUT(tmout_index);
+ mvsd_write(MVSD_HOST_CTRL, host->ctrl);
+ mvsd_write(MVSD_BLK_COUNT, data->blocks);
+ mvsd_write(MVSD_BLK_SIZE, data->blksz);
+
+ if (nodma || (data->blksz | data->sg->offset) & 3) {
+ /*
+ * We cannot do DMA on a buffer which offset or size
+ * is not aligned on a 4-byte boundary.
+ */
+ host->pio_size = data->blocks * data->blksz;
+ host->pio_ptr = sg_virt(data->sg);
+ if (!nodma)
+ printk(KERN_DEBUG "%s: fallback to PIO for data "
+ "at 0x%p size %d\n",
+ mmc_hostname(host->mmc),
+ host->pio_ptr, host->pio_size);
+ return 1;
+ } else {
+ dma_addr_t phys_addr;
+ int dma_dir = (data->flags & MMC_DATA_READ) ?
+ DMA_FROM_DEVICE : DMA_TO_DEVICE;
+ host->sg_frags = dma_map_sg(mmc_dev(host->mmc), data->sg,
+ data->sg_len, dma_dir);
+ phys_addr = sg_dma_address(data->sg);
+ mvsd_write(MVSD_SYS_ADDR_LOW, (u32)phys_addr & 0xffff);
+ mvsd_write(MVSD_SYS_ADDR_HI, (u32)phys_addr >> 16);
+ return 0;
+ }
+}
+
+static void mvsd_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct mvsd_host *host = mmc_priv(mmc);
+ void __iomem *iobase = host->base;
+ struct mmc_command *cmd = mrq->cmd;
+ u32 cmdreg = 0, xfer = 0, intr = 0;
+ unsigned long flags;
+
+ BUG_ON(host->mrq != NULL);
+ host->mrq = mrq;
+
+ dev_dbg(host->dev, "cmd %d (hw state 0x%04x)\n",
+ cmd->opcode, mvsd_read(MVSD_HW_STATE));
+
+ cmdreg = MVSD_CMD_INDEX(cmd->opcode);
+
+ if (cmd->flags & MMC_RSP_BUSY)
+ cmdreg |= MVSD_CMD_RSP_48BUSY;
+ else if (cmd->flags & MMC_RSP_136)
+ cmdreg |= MVSD_CMD_RSP_136;
+ else if (cmd->flags & MMC_RSP_PRESENT)
+ cmdreg |= MVSD_CMD_RSP_48;
+ else
+ cmdreg |= MVSD_CMD_RSP_NONE;
+
+ if (cmd->flags & MMC_RSP_CRC)
+ cmdreg |= MVSD_CMD_CHECK_CMDCRC;
+
+ if (cmd->flags & MMC_RSP_OPCODE)
+ cmdreg |= MVSD_CMD_INDX_CHECK;
+
+ if (cmd->flags & MMC_RSP_PRESENT) {
+ cmdreg |= MVSD_UNEXPECTED_RESP;
+ intr |= MVSD_NOR_UNEXP_RSP;
+ }
+
+ if (mrq->data) {
+ struct mmc_data *data = mrq->data;
+ int pio;
+
+ cmdreg |= MVSD_CMD_DATA_PRESENT | MVSD_CMD_CHECK_DATACRC16;
+ xfer |= MVSD_XFER_MODE_HW_WR_DATA_EN;
+ if (data->flags & MMC_DATA_READ)
+ xfer |= MVSD_XFER_MODE_TO_HOST;
+
+ pio = mvsd_setup_data(host, data);
+ if (pio) {
+ xfer |= MVSD_XFER_MODE_PIO;
+ /* PIO section of mvsd_irq has comments on those bits */
+ if (data->flags & MMC_DATA_WRITE)
+ intr |= MVSD_NOR_TX_AVAIL;
+ else if (host->pio_size > 32)
+ intr |= MVSD_NOR_RX_FIFO_8W;
+ else
+ intr |= MVSD_NOR_RX_READY;
+ }
+
+ if (data->stop) {
+ struct mmc_command *stop = data->stop;
+ u32 cmd12reg = 0;
+
+ mvsd_write(MVSD_AUTOCMD12_ARG_LOW, stop->arg & 0xffff);
+ mvsd_write(MVSD_AUTOCMD12_ARG_HI, stop->arg >> 16);
+
+ if (stop->flags & MMC_RSP_BUSY)
+ cmd12reg |= MVSD_AUTOCMD12_BUSY;
+ if (stop->flags & MMC_RSP_OPCODE)
+ cmd12reg |= MVSD_AUTOCMD12_INDX_CHECK;
+ cmd12reg |= MVSD_AUTOCMD12_INDEX(stop->opcode);
+ mvsd_write(MVSD_AUTOCMD12_CMD, cmd12reg);
+
+ xfer |= MVSD_XFER_MODE_AUTO_CMD12;
+ intr |= MVSD_NOR_AUTOCMD12_DONE;
+ } else {
+ intr |= MVSD_NOR_XFER_DONE;
+ }
+ } else {
+ intr |= MVSD_NOR_CMD_DONE;
+ }
+
+ mvsd_write(MVSD_ARG_LOW, cmd->arg & 0xffff);
+ mvsd_write(MVSD_ARG_HI, cmd->arg >> 16);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ host->xfer_mode &= MVSD_XFER_MODE_INT_CHK_EN;
+ host->xfer_mode |= xfer;
+ mvsd_write(MVSD_XFER_MODE, host->xfer_mode);
+
+ mvsd_write(MVSD_NOR_INTR_STATUS, ~MVSD_NOR_CARD_INT);
+ mvsd_write(MVSD_ERR_INTR_STATUS, 0xffff);
+ mvsd_write(MVSD_CMD, cmdreg);
+
+ host->intr_en &= MVSD_NOR_CARD_INT;
+ host->intr_en |= intr | MVSD_NOR_ERROR;
+ mvsd_write(MVSD_NOR_INTR_EN, host->intr_en);
+ mvsd_write(MVSD_ERR_INTR_EN, 0xffff);
+
+ mod_timer(&host->timer, jiffies + 5 * HZ);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static u32 mvsd_finish_cmd(struct mvsd_host *host, struct mmc_command *cmd,
+ u32 err_status)
+{
+ void __iomem *iobase = host->base;
+
+ if (cmd->flags & MMC_RSP_136) {
+ unsigned int response[8], i;
+ for (i = 0; i < 8; i++)
+ response[i] = mvsd_read(MVSD_RSP(i));
+ cmd->resp[0] = ((response[0] & 0x03ff) << 22) |
+ ((response[1] & 0xffff) << 6) |
+ ((response[2] & 0xfc00) >> 10);
+ cmd->resp[1] = ((response[2] & 0x03ff) << 22) |
+ ((response[3] & 0xffff) << 6) |
+ ((response[4] & 0xfc00) >> 10);
+ cmd->resp[2] = ((response[4] & 0x03ff) << 22) |
+ ((response[5] & 0xffff) << 6) |
+ ((response[6] & 0xfc00) >> 10);
+ cmd->resp[3] = ((response[6] & 0x03ff) << 22) |
+ ((response[7] & 0x3fff) << 8);
+ } else if (cmd->flags & MMC_RSP_PRESENT) {
+ unsigned int response[3], i;
+ for (i = 0; i < 3; i++)
+ response[i] = mvsd_read(MVSD_RSP(i));
+ cmd->resp[0] = ((response[2] & 0x003f) << (8 - 8)) |
+ ((response[1] & 0xffff) << (14 - 8)) |
+ ((response[0] & 0x03ff) << (30 - 8));
+ cmd->resp[1] = ((response[0] & 0xfc00) >> 10);
+ cmd->resp[2] = 0;
+ cmd->resp[3] = 0;
+ }
+
+ if (err_status & MVSD_ERR_CMD_TIMEOUT) {
+ cmd->error = -ETIMEDOUT;
+ } else if (err_status & (MVSD_ERR_CMD_CRC | MVSD_ERR_CMD_ENDBIT |
+ MVSD_ERR_CMD_INDEX | MVSD_ERR_CMD_STARTBIT)) {
+ cmd->error = -EILSEQ;
+ }
+ err_status &= ~(MVSD_ERR_CMD_TIMEOUT | MVSD_ERR_CMD_CRC |
+ MVSD_ERR_CMD_ENDBIT | MVSD_ERR_CMD_INDEX |
+ MVSD_ERR_CMD_STARTBIT);
+
+ return err_status;
+}
+
+static u32 mvsd_finish_data(struct mvsd_host *host, struct mmc_data *data,
+ u32 err_status)
+{
+ void __iomem *iobase = host->base;
+
+ if (host->pio_ptr) {
+ host->pio_ptr = NULL;
+ host->pio_size = 0;
+ } else {
+ dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_frags,
+ (data->flags & MMC_DATA_READ) ?
+ DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ }
+
+ if (err_status & MVSD_ERR_DATA_TIMEOUT)
+ data->error = -ETIMEDOUT;
+ else if (err_status & (MVSD_ERR_DATA_CRC | MVSD_ERR_DATA_ENDBIT))
+ data->error = -EILSEQ;
+ else if (err_status & MVSD_ERR_XFER_SIZE)
+ data->error = -EBADE;
+ err_status &= ~(MVSD_ERR_DATA_TIMEOUT | MVSD_ERR_DATA_CRC |
+ MVSD_ERR_DATA_ENDBIT | MVSD_ERR_XFER_SIZE);
+
+ dev_dbg(host->dev, "data done: blocks_left=%d, bytes_left=%d\n",
+ mvsd_read(MVSD_CURR_BLK_LEFT), mvsd_read(MVSD_CURR_BYTE_LEFT));
+ data->bytes_xfered =
+ (data->blocks - mvsd_read(MVSD_CURR_BLK_LEFT)) * data->blksz;
+ /* We can't be sure about the last block when errors are detected */
+ if (data->bytes_xfered && data->error)
+ data->bytes_xfered -= data->blksz;
+
+ /* Handle Auto cmd 12 response */
+ if (data->stop) {
+ unsigned int response[3], i;
+ for (i = 0; i < 3; i++)
+ response[i] = mvsd_read(MVSD_AUTO_RSP(i));
+ data->stop->resp[0] = ((response[2] & 0x003f) << (8 - 8)) |
+ ((response[1] & 0xffff) << (14 - 8)) |
+ ((response[0] & 0x03ff) << (30 - 8));
+ data->stop->resp[1] = ((response[0] & 0xfc00) >> 10);
+ data->stop->resp[2] = 0;
+ data->stop->resp[3] = 0;
+
+ if (err_status & MVSD_ERR_AUTOCMD12) {
+ u32 err_cmd12 = mvsd_read(MVSD_AUTOCMD12_ERR_STATUS);
+ dev_dbg(host->dev, "c12err 0x%04x\n", err_cmd12);
+ if (err_cmd12 & MVSD_AUTOCMD12_ERR_NOTEXE)
+ data->stop->error = -ENOEXEC;
+ else if (err_cmd12 & MVSD_AUTOCMD12_ERR_TIMEOUT)
+ data->stop->error = -ETIMEDOUT;
+ else if (err_cmd12)
+ data->stop->error = -EILSEQ;
+ err_status &= ~MVSD_ERR_AUTOCMD12;
+ }
+ }
+
+ return err_status;
+}
+
+static irqreturn_t mvsd_irq(int irq, void *dev)
+{
+ struct mvsd_host *host = dev;
+ void __iomem *iobase = host->base;
+ u32 intr_status, intr_done_mask;
+ int irq_handled = 0;
+
+ intr_status = mvsd_read(MVSD_NOR_INTR_STATUS);
+ dev_dbg(host->dev, "intr 0x%04x intr_en 0x%04x hw_state 0x%04x\n",
+ intr_status, mvsd_read(MVSD_NOR_INTR_EN),
+ mvsd_read(MVSD_HW_STATE));
+
+ spin_lock(&host->lock);
+
+ /* PIO handling, if needed. Messy business... */
+ if (host->pio_size &&
+ (intr_status & host->intr_en &
+ (MVSD_NOR_RX_READY | MVSD_NOR_RX_FIFO_8W))) {
+ u16 *p = host->pio_ptr;
+ int s = host->pio_size;
+ while (s >= 32 && (intr_status & MVSD_NOR_RX_FIFO_8W)) {
+ readsw(iobase + MVSD_FIFO, p, 16);
+ p += 16;
+ s -= 32;
+ intr_status = mvsd_read(MVSD_NOR_INTR_STATUS);
+ }
+ /*
+ * Normally we'd use < 32 here, but the RX_FIFO_8W bit
+ * doesn't appear to assert when there is exactly 32 bytes
+ * (8 words) left to fetch in a transfer.
+ */
+ if (s <= 32) {
+ while (s >= 4 && (intr_status & MVSD_NOR_RX_READY)) {
+ put_unaligned(mvsd_read(MVSD_FIFO), p++);
+ put_unaligned(mvsd_read(MVSD_FIFO), p++);
+ s -= 4;
+ intr_status = mvsd_read(MVSD_NOR_INTR_STATUS);
+ }
+ if (s && s < 4 && (intr_status & MVSD_NOR_RX_READY)) {
+ u16 val[2] = {0, 0};
+ val[0] = mvsd_read(MVSD_FIFO);
+ val[1] = mvsd_read(MVSD_FIFO);
+ memcpy(p, &val, s);
+ s = 0;
+ intr_status = mvsd_read(MVSD_NOR_INTR_STATUS);
+ }
+ if (s == 0) {
+ host->intr_en &=
+ ~(MVSD_NOR_RX_READY | MVSD_NOR_RX_FIFO_8W);
+ mvsd_write(MVSD_NOR_INTR_EN, host->intr_en);
+ } else if (host->intr_en & MVSD_NOR_RX_FIFO_8W) {
+ host->intr_en &= ~MVSD_NOR_RX_FIFO_8W;
+ host->intr_en |= MVSD_NOR_RX_READY;
+ mvsd_write(MVSD_NOR_INTR_EN, host->intr_en);
+ }
+ }
+ dev_dbg(host->dev, "pio %d intr 0x%04x hw_state 0x%04x\n",
+ s, intr_status, mvsd_read(MVSD_HW_STATE));
+ host->pio_ptr = p;
+ host->pio_size = s;
+ irq_handled = 1;
+ } else if (host->pio_size &&
+ (intr_status & host->intr_en &
+ (MVSD_NOR_TX_AVAIL | MVSD_NOR_TX_FIFO_8W))) {
+ u16 *p = host->pio_ptr;
+ int s = host->pio_size;
+ /*
+ * The TX_FIFO_8W bit is unreliable. When set, bursting
+ * 16 halfwords all at once in the FIFO drops data. Actually
+ * TX_AVAIL does go off after only one word is pushed even if
+ * TX_FIFO_8W remains set.
+ */
+ while (s >= 4 && (intr_status & MVSD_NOR_TX_AVAIL)) {
+ mvsd_write(MVSD_FIFO, get_unaligned(p++));
+ mvsd_write(MVSD_FIFO, get_unaligned(p++));
+ s -= 4;
+ intr_status = mvsd_read(MVSD_NOR_INTR_STATUS);
+ }
+ if (s < 4) {
+ if (s && (intr_status & MVSD_NOR_TX_AVAIL)) {
+ u16 val[2] = {0, 0};
+ memcpy(&val, p, s);
+ mvsd_write(MVSD_FIFO, val[0]);
+ mvsd_write(MVSD_FIFO, val[1]);
+ s = 0;
+ intr_status = mvsd_read(MVSD_NOR_INTR_STATUS);
+ }
+ if (s == 0) {
+ host->intr_en &=
+ ~(MVSD_NOR_TX_AVAIL | MVSD_NOR_TX_FIFO_8W);
+ mvsd_write(MVSD_NOR_INTR_EN, host->intr_en);
+ }
+ }
+ dev_dbg(host->dev, "pio %d intr 0x%04x hw_state 0x%04x\n",
+ s, intr_status, mvsd_read(MVSD_HW_STATE));
+ host->pio_ptr = p;
+ host->pio_size = s;
+ irq_handled = 1;
+ }
+
+ mvsd_write(MVSD_NOR_INTR_STATUS, intr_status);
+
+ intr_done_mask = MVSD_NOR_CARD_INT | MVSD_NOR_RX_READY |
+ MVSD_NOR_RX_FIFO_8W | MVSD_NOR_TX_FIFO_8W;
+ if (intr_status & host->intr_en & ~intr_done_mask) {
+ struct mmc_request *mrq = host->mrq;
+ struct mmc_command *cmd = mrq->cmd;
+ u32 err_status = 0;
+
+ del_timer(&host->timer);
+ host->mrq = NULL;
+
+ host->intr_en &= MVSD_NOR_CARD_INT;
+ mvsd_write(MVSD_NOR_INTR_EN, host->intr_en);
+ mvsd_write(MVSD_ERR_INTR_EN, 0);
+
+ spin_unlock(&host->lock);
+
+ if (intr_status & MVSD_NOR_UNEXP_RSP) {
+ cmd->error = -EPROTO;
+ } else if (intr_status & MVSD_NOR_ERROR) {
+ err_status = mvsd_read(MVSD_ERR_INTR_STATUS);
+ dev_dbg(host->dev, "err 0x%04x\n", err_status);
+ }
+
+ err_status = mvsd_finish_cmd(host, cmd, err_status);
+ if (mrq->data)
+ err_status = mvsd_finish_data(host, mrq->data, err_status);
+ if (err_status) {
+ printk(KERN_ERR "%s: unhandled error status %#04x\n",
+ mmc_hostname(host->mmc), err_status);
+ cmd->error = -ENOMSG;
+ }
+
+ mmc_request_done(host->mmc, mrq);
+ irq_handled = 1;
+ } else
+ spin_unlock(&host->lock);
+
+ if (intr_status & MVSD_NOR_CARD_INT) {
+ mmc_signal_sdio_irq(host->mmc);
+ irq_handled = 1;
+ }
+
+ if (irq_handled)
+ return IRQ_HANDLED;
+
+ printk(KERN_ERR "%s: unhandled interrupt status=0x%04x en=0x%04x "
+ "pio=%d\n", mmc_hostname(host->mmc), intr_status,
+ host->intr_en, host->pio_size);
+ return IRQ_NONE;
+}
+
+static void mvsd_timeout_timer(unsigned long data)
+{
+ struct mvsd_host *host = (struct mvsd_host *)data;
+ void __iomem *iobase = host->base;
+ struct mmc_request *mrq;
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ mrq = host->mrq;
+ if (mrq) {
+ printk(KERN_ERR "%s: Timeout waiting for hardware interrupt.\n",
+ mmc_hostname(host->mmc));
+ printk(KERN_ERR "%s: hw_state=0x%04x, intr_status=0x%04x "
+ "intr_en=0x%04x\n", mmc_hostname(host->mmc),
+ mvsd_read(MVSD_HW_STATE),
+ mvsd_read(MVSD_NOR_INTR_STATUS),
+ mvsd_read(MVSD_NOR_INTR_EN));
+
+ host->mrq = NULL;
+
+ mvsd_write(MVSD_SW_RESET, MVSD_SW_RESET_NOW);
+
+ host->xfer_mode &= MVSD_XFER_MODE_INT_CHK_EN;
+ mvsd_write(MVSD_XFER_MODE, host->xfer_mode);
+
+ host->intr_en &= MVSD_NOR_CARD_INT;
+ mvsd_write(MVSD_NOR_INTR_EN, host->intr_en);
+ mvsd_write(MVSD_ERR_INTR_EN, 0);
+ mvsd_write(MVSD_ERR_INTR_STATUS, 0xffff);
+
+ mrq->cmd->error = -ETIMEDOUT;
+ mvsd_finish_cmd(host, mrq->cmd, 0);
+ if (mrq->data) {
+ mrq->data->error = -ETIMEDOUT;
+ mvsd_finish_data(host, mrq->data, 0);
+ }
+ }
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ if (mrq)
+ mmc_request_done(host->mmc, mrq);
+}
+
+static irqreturn_t mvsd_card_detect_irq(int irq, void *dev)
+{
+ struct mvsd_host *host = dev;
+ mmc_detect_change(host->mmc, msecs_to_jiffies(100));
+ return IRQ_HANDLED;
+}
+
+static void mvsd_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+ struct mvsd_host *host = mmc_priv(mmc);
+ void __iomem *iobase = host->base;
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ if (enable) {
+ host->xfer_mode |= MVSD_XFER_MODE_INT_CHK_EN;
+ host->intr_en |= MVSD_NOR_CARD_INT;
+ } else {
+ host->xfer_mode &= ~MVSD_XFER_MODE_INT_CHK_EN;
+ host->intr_en &= ~MVSD_NOR_CARD_INT;
+ }
+ mvsd_write(MVSD_XFER_MODE, host->xfer_mode);
+ mvsd_write(MVSD_NOR_INTR_EN, host->intr_en);
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static int mvsd_get_ro(struct mmc_host *mmc)
+{
+ struct mvsd_host *host = mmc_priv(mmc);
+
+ if (host->gpio_write_protect)
+ return gpio_get_value(host->gpio_write_protect);
+
+ /*
+ * Board doesn't support read only detection; let the mmc core
+ * decide what to do.
+ */
+ return -ENOSYS;
+}
+
+static void mvsd_power_up(struct mvsd_host *host)
+{
+ void __iomem *iobase = host->base;
+ dev_dbg(host->dev, "power up\n");
+ mvsd_write(MVSD_NOR_INTR_EN, 0);
+ mvsd_write(MVSD_ERR_INTR_EN, 0);
+ mvsd_write(MVSD_SW_RESET, MVSD_SW_RESET_NOW);
+ mvsd_write(MVSD_XFER_MODE, 0);
+ mvsd_write(MVSD_NOR_STATUS_EN, 0xffff);
+ mvsd_write(MVSD_ERR_STATUS_EN, 0xffff);
+ mvsd_write(MVSD_NOR_INTR_STATUS, 0xffff);
+ mvsd_write(MVSD_ERR_INTR_STATUS, 0xffff);
+}
+
+static void mvsd_power_down(struct mvsd_host *host)
+{
+ void __iomem *iobase = host->base;
+ dev_dbg(host->dev, "power down\n");
+ mvsd_write(MVSD_NOR_INTR_EN, 0);
+ mvsd_write(MVSD_ERR_INTR_EN, 0);
+ mvsd_write(MVSD_SW_RESET, MVSD_SW_RESET_NOW);
+ mvsd_write(MVSD_XFER_MODE, MVSD_XFER_MODE_STOP_CLK);
+ mvsd_write(MVSD_NOR_STATUS_EN, 0);
+ mvsd_write(MVSD_ERR_STATUS_EN, 0);
+ mvsd_write(MVSD_NOR_INTR_STATUS, 0xffff);
+ mvsd_write(MVSD_ERR_INTR_STATUS, 0xffff);
+}
+
+static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct mvsd_host *host = mmc_priv(mmc);
+ void __iomem *iobase = host->base;
+ u32 ctrl_reg = 0;
+
+ if (ios->power_mode == MMC_POWER_UP)
+ mvsd_power_up(host);
+
+ if (ios->clock == 0) {
+ mvsd_write(MVSD_XFER_MODE, MVSD_XFER_MODE_STOP_CLK);
+ mvsd_write(MVSD_CLK_DIV, MVSD_BASE_DIV_MAX);
+ host->clock = 0;
+ dev_dbg(host->dev, "clock off\n");
+ } else if (ios->clock != host->clock) {
+ u32 m = DIV_ROUND_UP(host->base_clock, ios->clock) - 1;
+ if (m > MVSD_BASE_DIV_MAX)
+ m = MVSD_BASE_DIV_MAX;
+ mvsd_write(MVSD_CLK_DIV, m);
+ host->clock = ios->clock;
+ host->ns_per_clk = 1000000000 / (host->base_clock / (m+1));
+ dev_dbg(host->dev, "clock=%d (%d), div=0x%04x\n",
+ ios->clock, host->base_clock / (m+1), m);
+ }
+
+ /* default transfer mode */
+ ctrl_reg |= MVSD_HOST_CTRL_BIG_ENDIAN;
+ ctrl_reg &= ~MVSD_HOST_CTRL_LSB_FIRST;
+
+ /* default to maximum timeout */
+ ctrl_reg |= MVSD_HOST_CTRL_TMOUT_MASK;
+ ctrl_reg |= MVSD_HOST_CTRL_TMOUT_EN;
+
+ if (ios->bus_mode == MMC_BUSMODE_PUSHPULL)
+ ctrl_reg |= MVSD_HOST_CTRL_PUSH_PULL_EN;
+
+ if (ios->bus_width == MMC_BUS_WIDTH_4)
+ ctrl_reg |= MVSD_HOST_CTRL_DATA_WIDTH_4_BITS;
+
+ if (ios->timing == MMC_TIMING_MMC_HS ||
+ ios->timing == MMC_TIMING_SD_HS)
+ ctrl_reg |= MVSD_HOST_CTRL_HI_SPEED_EN;
+
+ host->ctrl = ctrl_reg;
+ mvsd_write(MVSD_HOST_CTRL, ctrl_reg);
+ dev_dbg(host->dev, "ctrl 0x%04x: %s %s %s\n", ctrl_reg,
+ (ctrl_reg & MVSD_HOST_CTRL_PUSH_PULL_EN) ?
+ "push-pull" : "open-drain",
+ (ctrl_reg & MVSD_HOST_CTRL_DATA_WIDTH_4_BITS) ?
+ "4bit-width" : "1bit-width",
+ (ctrl_reg & MVSD_HOST_CTRL_HI_SPEED_EN) ?
+ "high-speed" : "");
+
+ if (ios->power_mode == MMC_POWER_OFF)
+ mvsd_power_down(host);
+}
+
+static const struct mmc_host_ops mvsd_ops = {
+ .request = mvsd_request,
+ .get_ro = mvsd_get_ro,
+ .set_ios = mvsd_set_ios,
+ .enable_sdio_irq = mvsd_enable_sdio_irq,
+};
+
+static void __init mv_conf_mbus_windows(struct mvsd_host *host,
+ struct mbus_dram_target_info *dram)
+{
+ void __iomem *iobase = host->base;
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ writel(0, iobase + MVSD_WINDOW_CTRL(i));
+ writel(0, iobase + MVSD_WINDOW_BASE(i));
+ }
+
+ for (i = 0; i < dram->num_cs; i++) {
+ struct mbus_dram_window *cs = dram->cs + i;
+ writel(((cs->size - 1) & 0xffff0000) |
+ (cs->mbus_attr << 8) |
+ (dram->mbus_dram_target_id << 4) | 1,
+ iobase + MVSD_WINDOW_CTRL(i));
+ writel(cs->base, iobase + MVSD_WINDOW_BASE(i));
+ }
+}
+
+static int __init mvsd_probe(struct platform_device *pdev)
+{
+ struct mmc_host *mmc = NULL;
+ struct mvsd_host *host = NULL;
+ const struct mvsdio_platform_data *mvsd_data;
+ struct resource *r;
+ int ret, irq;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ irq = platform_get_irq(pdev, 0);
+ mvsd_data = pdev->dev.platform_data;
+ if (!r || irq < 0 || !mvsd_data)
+ return -ENXIO;
+
+ r = request_mem_region(r->start, SZ_1K, DRIVER_NAME);
+ if (!r)
+ return -EBUSY;
+
+ mmc = mmc_alloc_host(sizeof(struct mvsd_host), &pdev->dev);
+ if (!mmc) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ host = mmc_priv(mmc);
+ host->mmc = mmc;
+ host->dev = &pdev->dev;
+ host->res = r;
+ host->base_clock = mvsd_data->clock / 2;
+
+ mmc->ops = &mvsd_ops;
+
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+ mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ |
+ MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
+
+ mmc->f_min = DIV_ROUND_UP(host->base_clock, MVSD_BASE_DIV_MAX);
+ mmc->f_max = maxfreq;
+
+ mmc->max_blk_size = 2048;
+ mmc->max_blk_count = 65535;
+
+ mmc->max_hw_segs = 1;
+ mmc->max_phys_segs = 1;
+ mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count;
+ mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+
+ spin_lock_init(&host->lock);
+
+ host->base = ioremap(r->start, SZ_4K);
+ if (!host->base) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ /* (Re-)program MBUS remapping windows if we are asked to. */
+ if (mvsd_data->dram != NULL)
+ mv_conf_mbus_windows(host, mvsd_data->dram);
+
+ mvsd_power_down(host);
+
+ ret = request_irq(irq, mvsd_irq, 0, DRIVER_NAME, host);
+ if (ret) {
+ printk(KERN_ERR "%s: cannot assign irq %d\n", DRIVER_NAME, irq);
+ goto out;
+ } else
+ host->irq = irq;
+
+ if (mvsd_data->gpio_card_detect) {
+ ret = gpio_request(mvsd_data->gpio_card_detect,
+ DRIVER_NAME " cd");
+ if (ret == 0) {
+ gpio_direction_input(mvsd_data->gpio_card_detect);
+ irq = gpio_to_irq(mvsd_data->gpio_card_detect);
+ ret = request_irq(irq, mvsd_card_detect_irq,
+ IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING,
+ DRIVER_NAME " cd", host);
+ if (ret == 0)
+ host->gpio_card_detect =
+ mvsd_data->gpio_card_detect;
+ else
+ gpio_free(mvsd_data->gpio_card_detect);
+ }
+ }
+ if (!host->gpio_card_detect)
+ mmc->caps |= MMC_CAP_NEEDS_POLL;
+
+ if (mvsd_data->gpio_write_protect) {
+ ret = gpio_request(mvsd_data->gpio_write_protect,
+ DRIVER_NAME " wp");
+ if (ret == 0) {
+ gpio_direction_input(mvsd_data->gpio_write_protect);
+ host->gpio_write_protect =
+ mvsd_data->gpio_write_protect;
+ }
+ }
+
+ setup_timer(&host->timer, mvsd_timeout_timer, (unsigned long)host);
+ platform_set_drvdata(pdev, mmc);
+ ret = mmc_add_host(mmc);
+ if (ret)
+ goto out;
+
+ printk(KERN_NOTICE "%s: %s driver initialized, ",
+ mmc_hostname(mmc), DRIVER_NAME);
+ if (host->gpio_card_detect)
+ printk("using GPIO %d for card detection\n",
+ host->gpio_card_detect);
+ else
+ printk("lacking card detect (fall back to polling)\n");
+ return 0;
+
+out:
+ if (host) {
+ if (host->irq)
+ free_irq(host->irq, host);
+ if (host->gpio_card_detect) {
+ free_irq(gpio_to_irq(host->gpio_card_detect), host);
+ gpio_free(host->gpio_card_detect);
+ }
+ if (host->gpio_write_protect)
+ gpio_free(host->gpio_write_protect);
+ if (host->base)
+ iounmap(host->base);
+ }
+ if (r)
+ release_resource(r);
+ if (mmc)
+ mmc_free_host(mmc);
+
+ return ret;
+}
+
+static int __exit mvsd_remove(struct platform_device *pdev)
+{
+ struct mmc_host *mmc = platform_get_drvdata(pdev);
+
+ if (mmc) {
+ struct mvsd_host *host = mmc_priv(mmc);
+
+ if (host->gpio_card_detect) {
+ free_irq(gpio_to_irq(host->gpio_card_detect), host);
+ gpio_free(host->gpio_card_detect);
+ }
+ mmc_remove_host(mmc);
+ free_irq(host->irq, host);
+ if (host->gpio_write_protect)
+ gpio_free(host->gpio_write_protect);
+ del_timer_sync(&host->timer);
+ mvsd_power_down(host);
+ iounmap(host->base);
+ release_resource(host->res);
+ mmc_free_host(mmc);
+ }
+ platform_set_drvdata(pdev, NULL);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int mvsd_suspend(struct platform_device *dev, pm_message_t state,
+ u32 level)
+{
+ struct mmc_host *mmc = platform_get_drvdata(dev);
+ int ret = 0;
+
+ if (mmc && level == SUSPEND_DISABLE)
+ ret = mmc_suspend_host(mmc, state);
+
+ return ret;
+}
+
+static int mvsd_resume(struct platform_device *dev, u32 level)
+{
+ struct mmc_host *mmc = platform_dev_get_drvdata(dev);
+ int ret = 0;
+
+ if (mmc && level == RESUME_ENABLE)
+ ret = mmc_resume_host(mmc);
+
+ return ret;
+}
+#else
+#define mvsd_suspend NULL
+#define mvsd_resume NULL
+#endif
+
+static struct platform_driver mvsd_driver = {
+ .remove = __exit_p(mvsd_remove),
+ .suspend = mvsd_suspend,
+ .resume = mvsd_resume,
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+};
+
+static int __init mvsd_init(void)
+{
+ return platform_driver_probe(&mvsd_driver, mvsd_probe);
+}
+
+static void __exit mvsd_exit(void)
+{
+ platform_driver_unregister(&mvsd_driver);
+}
+
+module_init(mvsd_init);
+module_exit(mvsd_exit);
+
+/* maximum card clock frequency (default 50MHz) */
+module_param(maxfreq, int, 0);
+
+/* force PIO transfers all the time */
+module_param(nodma, int, 0);
+
+MODULE_AUTHOR("Maen Suleiman, Nicolas Pitre");
+MODULE_DESCRIPTION("Marvell MMC,SD,SDIO Host Controller driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/mvsdio.h b/drivers/mmc/host/mvsdio.h
new file mode 100644
index 00000000000..7d9727b9f5a
--- /dev/null
+++ b/drivers/mmc/host/mvsdio.h
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2008 Marvell Semiconductors, All Rights Reserved.
+ *
+ * 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.
+ */
+
+#ifndef __MVSDIO_H
+#define __MVSDIO_H
+
+/*
+ * Clock rates
+ */
+
+#define MVSD_CLOCKRATE_MAX 50000000
+#define MVSD_BASE_DIV_MAX 0x7ff
+
+
+/*
+ * Register offsets
+ */
+
+#define MVSD_SYS_ADDR_LOW 0x000
+#define MVSD_SYS_ADDR_HI 0x004
+#define MVSD_BLK_SIZE 0x008
+#define MVSD_BLK_COUNT 0x00c
+#define MVSD_ARG_LOW 0x010
+#define MVSD_ARG_HI 0x014
+#define MVSD_XFER_MODE 0x018
+#define MVSD_CMD 0x01c
+#define MVSD_RSP(i) (0x020 + ((i)<<2))
+#define MVSD_RSP0 0x020
+#define MVSD_RSP1 0x024
+#define MVSD_RSP2 0x028
+#define MVSD_RSP3 0x02c
+#define MVSD_RSP4 0x030
+#define MVSD_RSP5 0x034
+#define MVSD_RSP6 0x038
+#define MVSD_RSP7 0x03c
+#define MVSD_FIFO 0x040
+#define MVSD_RSP_CRC7 0x044
+#define MVSD_HW_STATE 0x048
+#define MVSD_HOST_CTRL 0x050
+#define MVSD_BLK_GAP_CTRL 0x054
+#define MVSD_CLK_CTRL 0x058
+#define MVSD_SW_RESET 0x05c
+#define MVSD_NOR_INTR_STATUS 0x060
+#define MVSD_ERR_INTR_STATUS 0x064
+#define MVSD_NOR_STATUS_EN 0x068
+#define MVSD_ERR_STATUS_EN 0x06c
+#define MVSD_NOR_INTR_EN 0x070
+#define MVSD_ERR_INTR_EN 0x074
+#define MVSD_AUTOCMD12_ERR_STATUS 0x078
+#define MVSD_CURR_BYTE_LEFT 0x07c
+#define MVSD_CURR_BLK_LEFT 0x080
+#define MVSD_AUTOCMD12_ARG_LOW 0x084
+#define MVSD_AUTOCMD12_ARG_HI 0x088
+#define MVSD_AUTOCMD12_CMD 0x08c
+#define MVSD_AUTO_RSP(i) (0x090 + ((i)<<2))
+#define MVSD_AUTO_RSP0 0x090
+#define MVSD_AUTO_RSP1 0x094
+#define MVSD_AUTO_RSP2 0x098
+#define MVSD_CLK_DIV 0x128
+
+#define MVSD_WINDOW_CTRL(i) (0x108 + ((i) << 3))
+#define MVSD_WINDOW_BASE(i) (0x10c + ((i) << 3))
+
+
+/*
+ * MVSD_CMD
+ */
+
+#define MVSD_CMD_RSP_NONE (0 << 0)
+#define MVSD_CMD_RSP_136 (1 << 0)
+#define MVSD_CMD_RSP_48 (2 << 0)
+#define MVSD_CMD_RSP_48BUSY (3 << 0)
+
+#define MVSD_CMD_CHECK_DATACRC16 (1 << 2)
+#define MVSD_CMD_CHECK_CMDCRC (1 << 3)
+#define MVSD_CMD_INDX_CHECK (1 << 4)
+#define MVSD_CMD_DATA_PRESENT (1 << 5)
+#define MVSD_UNEXPECTED_RESP (1 << 7)
+#define MVSD_CMD_INDEX(x) ((x) << 8)
+
+
+/*
+ * MVSD_AUTOCMD12_CMD
+ */
+
+#define MVSD_AUTOCMD12_BUSY (1 << 0)
+#define MVSD_AUTOCMD12_INDX_CHECK (1 << 1)
+#define MVSD_AUTOCMD12_INDEX(x) ((x) << 8)
+
+/*
+ * MVSD_XFER_MODE
+ */
+
+#define MVSD_XFER_MODE_WR_DATA_START (1 << 0)
+#define MVSD_XFER_MODE_HW_WR_DATA_EN (1 << 1)
+#define MVSD_XFER_MODE_AUTO_CMD12 (1 << 2)
+#define MVSD_XFER_MODE_INT_CHK_EN (1 << 3)
+#define MVSD_XFER_MODE_TO_HOST (1 << 4)
+#define MVSD_XFER_MODE_STOP_CLK (1 << 5)
+#define MVSD_XFER_MODE_PIO (1 << 6)
+
+
+/*
+ * MVSD_HOST_CTRL
+ */
+
+#define MVSD_HOST_CTRL_PUSH_PULL_EN (1 << 0)
+
+#define MVSD_HOST_CTRL_CARD_TYPE_MEM_ONLY (0 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_IO_ONLY (1 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_IO_MEM_COMBO (2 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_IO_MMC (3 << 1)
+#define MVSD_HOST_CTRL_CARD_TYPE_MASK (3 << 1)
+
+#define MVSD_HOST_CTRL_BIG_ENDIAN (1 << 3)
+#define MVSD_HOST_CTRL_LSB_FIRST (1 << 4)
+#define MVSD_HOST_CTRL_DATA_WIDTH_4_BITS (1 << 9)
+#define MVSD_HOST_CTRL_HI_SPEED_EN (1 << 10)
+
+#define MVSD_HOST_CTRL_TMOUT_MAX 0xf
+#define MVSD_HOST_CTRL_TMOUT_MASK (0xf << 11)
+#define MVSD_HOST_CTRL_TMOUT(x) ((x) << 11)
+#define MVSD_HOST_CTRL_TMOUT_EN (1 << 15)
+
+
+/*
+ * MVSD_SW_RESET
+ */
+
+#define MVSD_SW_RESET_NOW (1 << 8)
+
+
+/*
+ * Normal interrupt status bits
+ */
+
+#define MVSD_NOR_CMD_DONE (1 << 0)
+#define MVSD_NOR_XFER_DONE (1 << 1)
+#define MVSD_NOR_BLK_GAP_EVT (1 << 2)
+#define MVSD_NOR_DMA_DONE (1 << 3)
+#define MVSD_NOR_TX_AVAIL (1 << 4)
+#define MVSD_NOR_RX_READY (1 << 5)
+#define MVSD_NOR_CARD_INT (1 << 8)
+#define MVSD_NOR_READ_WAIT_ON (1 << 9)
+#define MVSD_NOR_RX_FIFO_8W (1 << 10)
+#define MVSD_NOR_TX_FIFO_8W (1 << 11)
+#define MVSD_NOR_SUSPEND_ON (1 << 12)
+#define MVSD_NOR_AUTOCMD12_DONE (1 << 13)
+#define MVSD_NOR_UNEXP_RSP (1 << 14)
+#define MVSD_NOR_ERROR (1 << 15)
+
+
+/*
+ * Error status bits
+ */
+
+#define MVSD_ERR_CMD_TIMEOUT (1 << 0)
+#define MVSD_ERR_CMD_CRC (1 << 1)
+#define MVSD_ERR_CMD_ENDBIT (1 << 2)
+#define MVSD_ERR_CMD_INDEX (1 << 3)
+#define MVSD_ERR_DATA_TIMEOUT (1 << 4)
+#define MVSD_ERR_DATA_CRC (1 << 5)
+#define MVSD_ERR_DATA_ENDBIT (1 << 6)
+#define MVSD_ERR_AUTOCMD12 (1 << 8)
+#define MVSD_ERR_CMD_STARTBIT (1 << 9)
+#define MVSD_ERR_XFER_SIZE (1 << 10)
+#define MVSD_ERR_RESP_T_BIT (1 << 11)
+#define MVSD_ERR_CRC_ENDBIT (1 << 12)
+#define MVSD_ERR_CRC_STARTBIT (1 << 13)
+#define MVSD_ERR_CRC_STATUS (1 << 14)
+
+
+/*
+ * CMD12 error status bits
+ */
+
+#define MVSD_AUTOCMD12_ERR_NOTEXE (1 << 0)
+#define MVSD_AUTOCMD12_ERR_TIMEOUT (1 << 1)
+#define MVSD_AUTOCMD12_ERR_CRC (1 << 2)
+#define MVSD_AUTOCMD12_ERR_ENDBIT (1 << 3)
+#define MVSD_AUTOCMD12_ERR_INDEX (1 << 4)
+#define MVSD_AUTOCMD12_ERR_RESP_T_BIT (1 << 5)
+#define MVSD_AUTOCMD12_ERR_RESP_STARTBIT (1 << 6)
+
+#endif
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 3916a5618e2..d183be6f2a5 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -56,6 +56,7 @@
#define SDVS18 (0x5 << 9)
#define SDVS30 (0x6 << 9)
#define SDVS33 (0x7 << 9)
+#define SDVS_MASK 0x00000E00
#define SDVSCLR 0xFFFFF1FF
#define SDVSDET 0x00000400
#define AUTOIDLE 0x1
@@ -76,6 +77,7 @@
#define MSBS (1 << 5)
#define BCE (1 << 1)
#define FOUR_BIT (1 << 1)
+#define DW8 (1 << 5)
#define CC 0x1
#define TC 0x02
#define OD 0x1
@@ -98,10 +100,8 @@
*/
#define OMAP_MMC1_DEVID 0
#define OMAP_MMC2_DEVID 1
+#define OMAP_MMC3_DEVID 2
-#define OMAP_MMC_DATADIR_NONE 0
-#define OMAP_MMC_DATADIR_READ 1
-#define OMAP_MMC_DATADIR_WRITE 2
#define MMC_TIMEOUT_MS 20
#define OMAP_MMC_MASTER_CLOCK 96000000
#define DRIVER_NAME "mmci-omap-hs"
@@ -137,18 +137,18 @@ struct mmc_omap_host {
resource_size_t mapbase;
unsigned int id;
unsigned int dma_len;
- unsigned int dma_dir;
+ unsigned int dma_sg_idx;
unsigned char bus_mode;
- unsigned char datadir;
u32 *buffer;
u32 bytesleft;
int suspended;
int irq;
int carddetect;
int use_dma, dma_ch;
- int initstr;
+ int dma_line_tx, dma_line_rx;
int slot_id;
int dbclk_enabled;
+ int response_busy;
struct omap_mmc_platform_data *pdata;
};
@@ -218,7 +218,7 @@ mmc_omap_show_slot_name(struct device *dev, struct device_attribute *attr,
struct mmc_omap_host *host = mmc_priv(mmc);
struct omap_mmc_slot_data slot = host->pdata->slots[host->slot_id];
- return sprintf(buf, "slot:%s\n", slot.name);
+ return sprintf(buf, "%s\n", slot.name);
}
static DEVICE_ATTR(slot_name, S_IRUGO, mmc_omap_show_slot_name, NULL);
@@ -243,10 +243,14 @@ mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd,
OMAP_HSMMC_WRITE(host->base, ISE, INT_EN_MASK);
OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK);
+ host->response_busy = 0;
if (cmd->flags & MMC_RSP_PRESENT) {
if (cmd->flags & MMC_RSP_136)
resptype = 1;
- else
+ else if (cmd->flags & MMC_RSP_BUSY) {
+ resptype = 3;
+ host->response_busy = 1;
+ } else
resptype = 2;
}
@@ -275,19 +279,35 @@ mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd,
OMAP_HSMMC_WRITE(host->base, CMD, cmdreg);
}
+static int
+mmc_omap_get_dma_dir(struct mmc_omap_host *host, struct mmc_data *data)
+{
+ if (data->flags & MMC_DATA_WRITE)
+ return DMA_TO_DEVICE;
+ else
+ return DMA_FROM_DEVICE;
+}
+
/*
* Notify the transfer complete to MMC core
*/
static void
mmc_omap_xfer_done(struct mmc_omap_host *host, struct mmc_data *data)
{
+ if (!data) {
+ struct mmc_request *mrq = host->mrq;
+
+ host->mrq = NULL;
+ mmc_omap_fclk_lazy_disable(host);
+ mmc_request_done(host->mmc, mrq);
+ return;
+ }
+
host->data = NULL;
if (host->use_dma && host->dma_ch != -1)
dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_len,
- host->dma_dir);
-
- host->datadir = OMAP_MMC_DATADIR_NONE;
+ mmc_omap_get_dma_dir(host, data));
if (!data->error)
data->bytes_xfered += data->blocks * (data->blksz);
@@ -322,7 +342,7 @@ mmc_omap_cmd_done(struct mmc_omap_host *host, struct mmc_command *cmd)
cmd->resp[0] = OMAP_HSMMC_READ(host->base, RSP10);
}
}
- if (host->data == NULL || cmd->error) {
+ if ((host->data == NULL && !host->response_busy) || cmd->error) {
host->mrq = NULL;
mmc_request_done(host->mmc, cmd->mrq);
}
@@ -331,19 +351,18 @@ mmc_omap_cmd_done(struct mmc_omap_host *host, struct mmc_command *cmd)
/*
* DMA clean up for command errors
*/
-static void mmc_dma_cleanup(struct mmc_omap_host *host)
+static void mmc_dma_cleanup(struct mmc_omap_host *host, int errno)
{
- host->data->error = -ETIMEDOUT;
+ host->data->error = errno;
if (host->use_dma && host->dma_ch != -1) {
dma_unmap_sg(mmc_dev(host->mmc), host->data->sg, host->dma_len,
- host->dma_dir);
+ mmc_omap_get_dma_dir(host, host->data));
omap_free_dma(host->dma_ch);
host->dma_ch = -1;
up(&host->sem);
}
host->data = NULL;
- host->datadir = OMAP_MMC_DATADIR_NONE;
}
/*
@@ -412,7 +431,7 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
struct mmc_data *data;
int end_cmd = 0, end_trans = 0, status;
- if (host->cmd == NULL && host->data == NULL) {
+ if (host->mrq == NULL) {
OMAP_HSMMC_WRITE(host->base, STAT,
OMAP_HSMMC_READ(host->base, STAT));
return IRQ_HANDLED;
@@ -437,18 +456,24 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
}
end_cmd = 1;
}
- if (host->data) {
- mmc_dma_cleanup(host);
+ if (host->data || host->response_busy) {
+ if (host->data)
+ mmc_dma_cleanup(host, -ETIMEDOUT);
+ host->response_busy = 0;
mmc_omap_reset_controller_fsm(host, SRD);
}
}
if ((status & DATA_TIMEOUT) ||
(status & DATA_CRC)) {
- if (host->data) {
- if (status & DATA_TIMEOUT)
- mmc_dma_cleanup(host);
+ if (host->data || host->response_busy) {
+ int err = (status & DATA_TIMEOUT) ?
+ -ETIMEDOUT : -EILSEQ;
+
+ if (host->data)
+ mmc_dma_cleanup(host, err);
else
- host->data->error = -EILSEQ;
+ host->mrq->cmd->error = err;
+ host->response_busy = 0;
mmc_omap_reset_controller_fsm(host, SRD);
end_trans = 1;
}
@@ -473,6 +498,19 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
return IRQ_HANDLED;
}
+static void set_sd_bus_power(struct mmc_omap_host *host)
+{
+ unsigned long i;
+
+ OMAP_HSMMC_WRITE(host->base, HCTL,
+ OMAP_HSMMC_READ(host->base, HCTL) | SDBP);
+ for (i = 0; i < loops_per_jiffy; i++) {
+ if (OMAP_HSMMC_READ(host->base, HCTL) & SDBP)
+ break;
+ cpu_relax();
+ }
+}
+
/*
* Switch MMC interface voltage ... only relevant for MMC1.
*
@@ -485,9 +523,6 @@ static int omap_mmc_switch_opcond(struct mmc_omap_host *host, int vdd)
u32 reg_val = 0;
int ret;
- if (host->id != OMAP_MMC1_DEVID)
- return 0;
-
/* Disable the clocks */
clk_disable(host->fclk);
clk_disable(host->iclk);
@@ -532,9 +567,7 @@ static int omap_mmc_switch_opcond(struct mmc_omap_host *host, int vdd)
reg_val |= SDVS30;
OMAP_HSMMC_WRITE(host->base, HCTL, reg_val);
-
- OMAP_HSMMC_WRITE(host->base, HCTL,
- OMAP_HSMMC_READ(host->base, HCTL) | SDBP);
+ set_sd_bus_power(host);
return 0;
err:
@@ -551,7 +584,10 @@ static void mmc_omap_detect(struct work_struct *work)
mmc_carddetect_work);
struct omap_mmc_slot_data *slot = &mmc_slot(host);
- host->carddetect = slot->card_detect(slot->card_detect_irq);
+ if (mmc_slot(host).card_detect)
+ host->carddetect = slot->card_detect(slot->card_detect_irq);
+ else
+ host->carddetect = -ENOSYS;
sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch");
if (host->carddetect) {
@@ -574,6 +610,48 @@ static irqreturn_t omap_mmc_cd_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
+static int mmc_omap_get_dma_sync_dev(struct mmc_omap_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 mmc_omap_config_dma_params(struct mmc_omap_host *host,
+ struct mmc_data *data,
+ struct scatterlist *sgl)
+{
+ 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,
+ mmc_omap_get_dma_sync_dev(host, data),
+ !(data->flags & MMC_DATA_WRITE));
+
+ omap_start_dma(dma_ch);
+}
+
/*
* DMA call back function
*/
@@ -587,6 +665,14 @@ static void mmc_omap_dma_cb(int lch, u16 ch_status, void *data)
if (host->dma_ch < 0)
return;
+ host->dma_sg_idx++;
+ if (host->dma_sg_idx < host->dma_len) {
+ /* Fire up the next transfer. */
+ mmc_omap_config_dma_params(host, host->data,
+ host->data->sg + host->dma_sg_idx);
+ return;
+ }
+
omap_free_dma(host->dma_ch);
host->dma_ch = -1;
/*
@@ -597,38 +683,28 @@ static void mmc_omap_dma_cb(int lch, u16 ch_status, void *data)
}
/*
- * Configure dma src and destination parameters
- */
-static int mmc_omap_config_dma_param(int sync_dir, struct mmc_omap_host *host,
- struct mmc_data *data)
-{
- if (sync_dir == 0) {
- omap_set_dma_dest_params(host->dma_ch, 0,
- OMAP_DMA_AMODE_CONSTANT,
- (host->mapbase + OMAP_HSMMC_DATA), 0, 0);
- omap_set_dma_src_params(host->dma_ch, 0,
- OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(&data->sg[0]), 0, 0);
- } else {
- omap_set_dma_src_params(host->dma_ch, 0,
- OMAP_DMA_AMODE_CONSTANT,
- (host->mapbase + OMAP_HSMMC_DATA), 0, 0);
- omap_set_dma_dest_params(host->dma_ch, 0,
- OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(&data->sg[0]), 0, 0);
- }
- return 0;
-}
-/*
* Routine to configure and start DMA for the MMC card
*/
static int
mmc_omap_start_dma_transfer(struct mmc_omap_host *host, struct mmc_request *req)
{
- int sync_dev, sync_dir = 0;
- int dma_ch = 0, ret = 0, err = 1;
+ int dma_ch = 0, ret = 0, err = 1, i;
struct mmc_data *data = req->data;
+ /* Sanity check: all the SG entries must be aligned by block size. */
+ for (i = 0; i < host->dma_len; i++) {
+ struct scatterlist *sgl;
+
+ sgl = data->sg + i;
+ if (sgl->length % data->blksz)
+ return -EINVAL;
+ }
+ if ((data->blksz % 4) != 0)
+ /* REVISIT: The MMC buffer increments only when MSB is written.
+ * Return error for blksz which is non multiple of four.
+ */
+ return -EINVAL;
+
/*
* If for some reason the DMA transfer is still active,
* we wait for timeout period and free the dma
@@ -647,49 +723,22 @@ mmc_omap_start_dma_transfer(struct mmc_omap_host *host, struct mmc_request *req)
return err;
}
- if (!(data->flags & MMC_DATA_WRITE)) {
- host->dma_dir = DMA_FROM_DEVICE;
- if (host->id == OMAP_MMC1_DEVID)
- sync_dev = OMAP24XX_DMA_MMC1_RX;
- else
- sync_dev = OMAP24XX_DMA_MMC2_RX;
- } else {
- host->dma_dir = DMA_TO_DEVICE;
- if (host->id == OMAP_MMC1_DEVID)
- sync_dev = OMAP24XX_DMA_MMC1_TX;
- else
- sync_dev = OMAP24XX_DMA_MMC2_TX;
- }
-
- ret = omap_request_dma(sync_dev, "MMC/SD", mmc_omap_dma_cb,
- host, &dma_ch);
+ ret = omap_request_dma(mmc_omap_get_dma_sync_dev(host, data), "MMC/SD",
+ mmc_omap_dma_cb,host, &dma_ch);
if (ret != 0) {
- dev_dbg(mmc_dev(host->mmc),
+ dev_err(mmc_dev(host->mmc),
"%s: omap_request_dma() failed with %d\n",
mmc_hostname(host->mmc), ret);
return ret;
}
host->dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
- data->sg_len, host->dma_dir);
+ data->sg_len, mmc_omap_get_dma_dir(host, data));
host->dma_ch = dma_ch;
+ host->dma_sg_idx = 0;
- if (!(data->flags & MMC_DATA_WRITE))
- mmc_omap_config_dma_param(1, host, data);
- else
- mmc_omap_config_dma_param(0, host, data);
-
- if ((data->blksz % 4) == 0)
- omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S32,
- (data->blksz / 4), data->blocks, OMAP_DMA_SYNC_FRAME,
- sync_dev, sync_dir);
- else
- /* REVISIT: The MMC buffer increments only when MSB is written.
- * Return error for blksz which is non multiple of four.
- */
- return -EINVAL;
+ mmc_omap_config_dma_params(host, data, data->sg);
- omap_start_dma(dma_ch);
return 0;
}
@@ -739,7 +788,6 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
host->data = req->data;
if (req->data == NULL) {
- host->datadir = OMAP_MMC_DATADIR_NONE;
OMAP_HSMMC_WRITE(host->base, BLK, 0);
return 0;
}
@@ -748,9 +796,6 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
| (req->data->blocks << 16));
set_data_timeout(host, req);
- host->datadir = (req->data->flags & MMC_DATA_WRITE) ?
- OMAP_MMC_DATADIR_WRITE : OMAP_MMC_DATADIR_READ;
-
if (host->use_dma) {
ret = mmc_omap_start_dma_transfer(host, req);
if (ret != 0) {
@@ -782,36 +827,29 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
u16 dsor = 0;
unsigned long regval;
unsigned long timeout;
+ u32 con;
switch (ios->power_mode) {
case MMC_POWER_OFF:
mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0);
- /*
- * Reset interface voltage to 3V if it's 1.8V now;
- * only relevant on MMC-1, the others always use 1.8V.
- *
- * REVISIT: If we are able to detect cards after unplugging
- * a 1.8V card, this code should not be needed.
- */
- if (host->id != OMAP_MMC1_DEVID)
- break;
- if (!(OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET)) {
- int vdd = fls(host->mmc->ocr_avail) - 1;
- if (omap_mmc_switch_opcond(host, vdd) != 0)
- host->mmc->ios.vdd = vdd;
- }
break;
case MMC_POWER_UP:
mmc_slot(host).set_power(host->dev, host->slot_id, 1, ios->vdd);
break;
}
+ con = OMAP_HSMMC_READ(host->base, CON);
switch (mmc->ios.bus_width) {
+ case MMC_BUS_WIDTH_8:
+ OMAP_HSMMC_WRITE(host->base, CON, con | DW8);
+ break;
case MMC_BUS_WIDTH_4:
+ OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8);
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) | FOUR_BIT);
break;
case MMC_BUS_WIDTH_1:
+ OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8);
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) & ~FOUR_BIT);
break;
@@ -891,6 +929,33 @@ static int omap_hsmmc_get_ro(struct mmc_host *mmc)
return pdata->slots[0].get_ro(host->dev, 0);
}
+static void omap_hsmmc_init(struct mmc_omap_host *host)
+{
+ u32 hctl, capa, value;
+
+ /* Only MMC1 supports 3.0V */
+ if (host->id == OMAP_MMC1_DEVID) {
+ hctl = SDVS30;
+ capa = VS30 | VS18;
+ } else {
+ hctl = SDVS18;
+ capa = VS18;
+ }
+
+ value = OMAP_HSMMC_READ(host->base, HCTL) & ~SDVS_MASK;
+ OMAP_HSMMC_WRITE(host->base, HCTL, value | hctl);
+
+ value = OMAP_HSMMC_READ(host->base, CAPA);
+ OMAP_HSMMC_WRITE(host->base, CAPA, value | capa);
+
+ /* Set the controller to AUTO IDLE mode */
+ value = OMAP_HSMMC_READ(host->base, SYSCONFIG);
+ OMAP_HSMMC_WRITE(host->base, SYSCONFIG, value | AUTOIDLE);
+
+ /* Set SD bus power bit */
+ set_sd_bus_power(host);
+}
+
static struct mmc_host_ops mmc_omap_ops = {
.request = omap_mmc_request,
.set_ios = omap_mmc_set_ios,
@@ -906,7 +971,6 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
struct mmc_omap_host *host = NULL;
struct resource *res;
int ret = 0, irq;
- u32 hctl, capa;
if (pdata == NULL) {
dev_err(&pdev->dev, "Platform Data is missing\n");
@@ -996,10 +1060,11 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
else
host->dbclk_enabled = 1;
-#ifdef CONFIG_MMC_BLOCK_BOUNCE
- mmc->max_phys_segs = 1;
- mmc->max_hw_segs = 1;
-#endif
+ /* Since we do only SG emulation, we can have as many segs
+ * as we want. */
+ mmc->max_phys_segs = 1024;
+ mmc->max_hw_segs = 1024;
+
mmc->max_blk_size = 512; /* Block Length at max can be 1024 */
mmc->max_blk_count = 0xFFFF; /* No. of Blocks is 16 bits */
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
@@ -1008,31 +1073,31 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
mmc->ocr_avail = mmc_slot(host).ocr_mask;
mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
- if (pdata->slots[host->slot_id].wires >= 4)
+ if (pdata->slots[host->slot_id].wires >= 8)
+ mmc->caps |= MMC_CAP_8_BIT_DATA;
+ else if (pdata->slots[host->slot_id].wires >= 4)
mmc->caps |= MMC_CAP_4_BIT_DATA;
- /* Only MMC1 supports 3.0V */
- if (host->id == OMAP_MMC1_DEVID) {
- hctl = SDVS30;
- capa = VS30 | VS18;
- } else {
- hctl = SDVS18;
- capa = VS18;
- }
-
- OMAP_HSMMC_WRITE(host->base, HCTL,
- OMAP_HSMMC_READ(host->base, HCTL) | hctl);
-
- OMAP_HSMMC_WRITE(host->base, CAPA,
- OMAP_HSMMC_READ(host->base, CAPA) | capa);
-
- /* Set the controller to AUTO IDLE mode */
- OMAP_HSMMC_WRITE(host->base, SYSCONFIG,
- OMAP_HSMMC_READ(host->base, SYSCONFIG) | AUTOIDLE);
+ omap_hsmmc_init(host);
- /* Set SD bus power bit */
- OMAP_HSMMC_WRITE(host->base, HCTL,
- OMAP_HSMMC_READ(host->base, HCTL) | SDBP);
+ /* Select DMA lines */
+ switch (host->id) {
+ case OMAP_MMC1_DEVID:
+ host->dma_line_tx = OMAP24XX_DMA_MMC1_TX;
+ host->dma_line_rx = OMAP24XX_DMA_MMC1_RX;
+ break;
+ case OMAP_MMC2_DEVID:
+ host->dma_line_tx = OMAP24XX_DMA_MMC2_TX;
+ host->dma_line_rx = OMAP24XX_DMA_MMC2_RX;
+ break;
+ case OMAP_MMC3_DEVID:
+ host->dma_line_tx = OMAP34XX_DMA_MMC3_TX;
+ host->dma_line_rx = OMAP34XX_DMA_MMC3_RX;
+ break;
+ default:
+ dev_err(mmc_dev(host->mmc), "Invalid MMC id\n");
+ goto err_irq;
+ }
/* Request IRQ for MMC operations */
ret = request_irq(host->irq, mmc_omap_irq, IRQF_DISABLED,
@@ -1051,7 +1116,7 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
}
/* Request IRQ for card detect */
- if ((mmc_slot(host).card_detect_irq) && (mmc_slot(host).card_detect)) {
+ if ((mmc_slot(host).card_detect_irq)) {
ret = request_irq(mmc_slot(host).card_detect_irq,
omap_mmc_cd_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
@@ -1074,8 +1139,8 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
if (ret < 0)
goto err_slot_name;
}
- if (mmc_slot(host).card_detect_irq && mmc_slot(host).card_detect &&
- host->pdata->slots[host->slot_id].get_cover_state) {
+ if (mmc_slot(host).card_detect_irq &&
+ host->pdata->slots[host->slot_id].get_cover_state) {
ret = device_create_file(&mmc->class_dev,
&dev_attr_cover_switch);
if (ret < 0)
@@ -1173,20 +1238,8 @@ static int omap_mmc_suspend(struct platform_device *pdev, pm_message_t state)
" level suspend\n");
}
- if (host->id == OMAP_MMC1_DEVID
- && !(OMAP_HSMMC_READ(host->base, HCTL)
- & SDVSDET)) {
- OMAP_HSMMC_WRITE(host->base, HCTL,
- OMAP_HSMMC_READ(host->base, HCTL)
- & SDVSCLR);
- OMAP_HSMMC_WRITE(host->base, HCTL,
- OMAP_HSMMC_READ(host->base, HCTL)
- | SDVS30);
- OMAP_HSMMC_WRITE(host->base, HCTL,
- OMAP_HSMMC_READ(host->base, HCTL)
- | SDBP);
- }
-
+ OMAP_HSMMC_WRITE(host->base, HCTL,
+ OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
clk_disable(host->fclk);
clk_disable(host->iclk);
clk_disable(host->dbclk);
@@ -1222,6 +1275,8 @@ static int omap_mmc_resume(struct platform_device *pdev)
dev_dbg(mmc_dev(host->mmc),
"Enabling debounce clk failed\n");
+ omap_hsmmc_init(host);
+
if (host->pdata->resume) {
ret = host->pdata->resume(&pdev->dev, host->slot_id);
if (ret)
diff --git a/drivers/mmc/host/sdhci-of.c b/drivers/mmc/host/sdhci-of.c
new file mode 100644
index 00000000000..3ff4ac3abe8
--- /dev/null
+++ b/drivers/mmc/host/sdhci-of.c
@@ -0,0 +1,309 @@
+/*
+ * OpenFirmware bindings for Secure Digital Host Controller Interface.
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2009 MontaVista Software, Inc.
+ *
+ * Authors: Xiaobo Xie <X.Xie@freescale.com>
+ * Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/mmc/host.h>
+#include "sdhci.h"
+
+struct sdhci_of_data {
+ unsigned int quirks;
+ struct sdhci_ops ops;
+};
+
+struct sdhci_of_host {
+ unsigned int clock;
+ u16 xfer_mode_shadow;
+};
+
+/*
+ * Ops and quirks for the Freescale eSDHC controller.
+ */
+
+#define ESDHC_DMA_SYSCTL 0x40c
+#define ESDHC_DMA_SNOOP 0x00000040
+
+#define ESDHC_SYSTEM_CONTROL 0x2c
+#define ESDHC_CLOCK_MASK 0x0000fff0
+#define ESDHC_PREDIV_SHIFT 8
+#define ESDHC_DIVIDER_SHIFT 4
+#define ESDHC_CLOCK_PEREN 0x00000004
+#define ESDHC_CLOCK_HCKEN 0x00000002
+#define ESDHC_CLOCK_IPGEN 0x00000001
+
+static u32 esdhc_readl(struct sdhci_host *host, int reg)
+{
+ return in_be32(host->ioaddr + reg);
+}
+
+static u16 esdhc_readw(struct sdhci_host *host, int reg)
+{
+ return in_be16(host->ioaddr + (reg ^ 0x2));
+}
+
+static u8 esdhc_readb(struct sdhci_host *host, int reg)
+{
+ return in_8(host->ioaddr + (reg ^ 0x3));
+}
+
+static void esdhc_writel(struct sdhci_host *host, u32 val, int reg)
+{
+ out_be32(host->ioaddr + reg, val);
+}
+
+static void esdhc_writew(struct sdhci_host *host, u16 val, int reg)
+{
+ struct sdhci_of_host *of_host = sdhci_priv(host);
+ int base = reg & ~0x3;
+ int shift = (reg & 0x2) * 8;
+
+ switch (reg) {
+ case SDHCI_TRANSFER_MODE:
+ /*
+ * Postpone this write, we must do it together with a
+ * command write that is down below.
+ */
+ of_host->xfer_mode_shadow = val;
+ return;
+ case SDHCI_COMMAND:
+ esdhc_writel(host, val << 16 | of_host->xfer_mode_shadow,
+ SDHCI_TRANSFER_MODE);
+ return;
+ case SDHCI_BLOCK_SIZE:
+ /*
+ * Two last DMA bits are reserved, and first one is used for
+ * non-standard blksz of 4096 bytes that we don't support
+ * yet. So clear the DMA boundary bits.
+ */
+ val &= ~SDHCI_MAKE_BLKSZ(0x7, 0);
+ /* fall through */
+ }
+ clrsetbits_be32(host->ioaddr + base, 0xffff << shift, val << shift);
+}
+
+static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+ int base = reg & ~0x3;
+ int shift = (reg & 0x3) * 8;
+
+ clrsetbits_be32(host->ioaddr + base , 0xff << shift, val << shift);
+}
+
+static void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ int div;
+ int pre_div = 2;
+
+ clrbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
+ ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | ESDHC_CLOCK_MASK);
+
+ if (clock == 0)
+ goto out;
+
+ if (host->max_clk / 16 > clock) {
+ for (; pre_div < 256; pre_div *= 2) {
+ if (host->max_clk / pre_div < clock * 16)
+ break;
+ }
+ }
+
+ for (div = 1; div <= 16; div++) {
+ if (host->max_clk / (div * pre_div) <= clock)
+ break;
+ }
+
+ pre_div >>= 1;
+
+ setbits32(host->ioaddr + ESDHC_SYSTEM_CONTROL, ESDHC_CLOCK_IPGEN |
+ ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN |
+ div << ESDHC_DIVIDER_SHIFT | pre_div << ESDHC_PREDIV_SHIFT);
+ mdelay(100);
+out:
+ host->clock = clock;
+}
+
+static int esdhc_enable_dma(struct sdhci_host *host)
+{
+ setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP);
+ return 0;
+}
+
+static unsigned int esdhc_get_max_clock(struct sdhci_host *host)
+{
+ struct sdhci_of_host *of_host = sdhci_priv(host);
+
+ return of_host->clock;
+}
+
+static unsigned int esdhc_get_timeout_clock(struct sdhci_host *host)
+{
+ struct sdhci_of_host *of_host = sdhci_priv(host);
+
+ return of_host->clock / 1000;
+}
+
+static struct sdhci_of_data sdhci_esdhc = {
+ .quirks = SDHCI_QUIRK_FORCE_BLK_SZ_2048 |
+ SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+ SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
+ SDHCI_QUIRK_NO_BUSY_IRQ |
+ SDHCI_QUIRK_NONSTANDARD_CLOCK |
+ SDHCI_QUIRK_PIO_NEEDS_DELAY |
+ SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET |
+ SDHCI_QUIRK_NO_CARD_NO_RESET,
+ .ops = {
+ .readl = esdhc_readl,
+ .readw = esdhc_readw,
+ .readb = esdhc_readb,
+ .writel = esdhc_writel,
+ .writew = esdhc_writew,
+ .writeb = esdhc_writeb,
+ .set_clock = esdhc_set_clock,
+ .enable_dma = esdhc_enable_dma,
+ .get_max_clock = esdhc_get_max_clock,
+ .get_timeout_clock = esdhc_get_timeout_clock,
+ },
+};
+
+#ifdef CONFIG_PM
+
+static int sdhci_of_suspend(struct of_device *ofdev, pm_message_t state)
+{
+ struct sdhci_host *host = dev_get_drvdata(&ofdev->dev);
+
+ return mmc_suspend_host(host->mmc, state);
+}
+
+static int sdhci_of_resume(struct of_device *ofdev)
+{
+ struct sdhci_host *host = dev_get_drvdata(&ofdev->dev);
+
+ return mmc_resume_host(host->mmc);
+}
+
+#else
+
+#define sdhci_of_suspend NULL
+#define sdhci_of_resume NULL
+
+#endif
+
+static int __devinit sdhci_of_probe(struct of_device *ofdev,
+ const struct of_device_id *match)
+{
+ struct device_node *np = ofdev->node;
+ struct sdhci_of_data *sdhci_of_data = match->data;
+ struct sdhci_host *host;
+ struct sdhci_of_host *of_host;
+ const u32 *clk;
+ int size;
+ int ret;
+
+ if (!of_device_is_available(np))
+ return -ENODEV;
+
+ host = sdhci_alloc_host(&ofdev->dev, sizeof(*of_host));
+ if (!host)
+ return -ENOMEM;
+
+ of_host = sdhci_priv(host);
+ dev_set_drvdata(&ofdev->dev, host);
+
+ host->ioaddr = of_iomap(np, 0);
+ if (!host->ioaddr) {
+ ret = -ENOMEM;
+ goto err_addr_map;
+ }
+
+ host->irq = irq_of_parse_and_map(np, 0);
+ if (!host->irq) {
+ ret = -EINVAL;
+ goto err_no_irq;
+ }
+
+ host->hw_name = dev_name(&ofdev->dev);
+ if (sdhci_of_data) {
+ host->quirks = sdhci_of_data->quirks;
+ host->ops = &sdhci_of_data->ops;
+ }
+
+ clk = of_get_property(np, "clock-frequency", &size);
+ if (clk && size == sizeof(*clk) && *clk)
+ of_host->clock = *clk;
+
+ ret = sdhci_add_host(host);
+ if (ret)
+ goto err_add_host;
+
+ return 0;
+
+err_add_host:
+ irq_dispose_mapping(host->irq);
+err_no_irq:
+ iounmap(host->ioaddr);
+err_addr_map:
+ sdhci_free_host(host);
+ return ret;
+}
+
+static int __devexit sdhci_of_remove(struct of_device *ofdev)
+{
+ struct sdhci_host *host = dev_get_drvdata(&ofdev->dev);
+
+ sdhci_remove_host(host, 0);
+ sdhci_free_host(host);
+ irq_dispose_mapping(host->irq);
+ iounmap(host->ioaddr);
+ return 0;
+}
+
+static const struct of_device_id sdhci_of_match[] = {
+ { .compatible = "fsl,mpc8379-esdhc", .data = &sdhci_esdhc, },
+ { .compatible = "fsl,mpc8536-esdhc", .data = &sdhci_esdhc, },
+ { .compatible = "generic-sdhci", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, sdhci_of_match);
+
+static struct of_platform_driver sdhci_of_driver = {
+ .driver.name = "sdhci-of",
+ .match_table = sdhci_of_match,
+ .probe = sdhci_of_probe,
+ .remove = __devexit_p(sdhci_of_remove),
+ .suspend = sdhci_of_suspend,
+ .resume = sdhci_of_resume,
+};
+
+static int __init sdhci_of_init(void)
+{
+ return of_register_platform_driver(&sdhci_of_driver);
+}
+module_init(sdhci_of_init);
+
+static void __exit sdhci_of_exit(void)
+{
+ of_unregister_platform_driver(&sdhci_of_driver);
+}
+module_exit(sdhci_of_exit);
+
+MODULE_DESCRIPTION("Secure Digital Host Controller Interface OF driver");
+MODULE_AUTHOR("Xiaobo Xie <X.Xie@freescale.com>, "
+ "Anton Vorontsov <avorontsov@ru.mvista.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index accb592764e..30d8e3d4e6f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -48,35 +48,35 @@ static void sdhci_dumpregs(struct sdhci_host *host)
printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n");
printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n",
- readl(host->ioaddr + SDHCI_DMA_ADDRESS),
- readw(host->ioaddr + SDHCI_HOST_VERSION));
+ sdhci_readl(host, SDHCI_DMA_ADDRESS),
+ sdhci_readw(host, SDHCI_HOST_VERSION));
printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n",
- readw(host->ioaddr + SDHCI_BLOCK_SIZE),
- readw(host->ioaddr + SDHCI_BLOCK_COUNT));
+ sdhci_readw(host, SDHCI_BLOCK_SIZE),
+ sdhci_readw(host, SDHCI_BLOCK_COUNT));
printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
- readl(host->ioaddr + SDHCI_ARGUMENT),
- readw(host->ioaddr + SDHCI_TRANSFER_MODE));
+ sdhci_readl(host, SDHCI_ARGUMENT),
+ sdhci_readw(host, SDHCI_TRANSFER_MODE));
printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n",
- readl(host->ioaddr + SDHCI_PRESENT_STATE),
- readb(host->ioaddr + SDHCI_HOST_CONTROL));
+ sdhci_readl(host, SDHCI_PRESENT_STATE),
+ sdhci_readb(host, SDHCI_HOST_CONTROL));
printk(KERN_DEBUG DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n",
- readb(host->ioaddr + SDHCI_POWER_CONTROL),
- readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL));
+ sdhci_readb(host, SDHCI_POWER_CONTROL),
+ sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL));
printk(KERN_DEBUG DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n",
- readb(host->ioaddr + SDHCI_WAKE_UP_CONTROL),
- readw(host->ioaddr + SDHCI_CLOCK_CONTROL));
+ sdhci_readb(host, SDHCI_WAKE_UP_CONTROL),
+ sdhci_readw(host, SDHCI_CLOCK_CONTROL));
printk(KERN_DEBUG DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n",
- readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL),
- readl(host->ioaddr + SDHCI_INT_STATUS));
+ sdhci_readb(host, SDHCI_TIMEOUT_CONTROL),
+ sdhci_readl(host, SDHCI_INT_STATUS));
printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
- readl(host->ioaddr + SDHCI_INT_ENABLE),
- readl(host->ioaddr + SDHCI_SIGNAL_ENABLE));
+ sdhci_readl(host, SDHCI_INT_ENABLE),
+ sdhci_readl(host, SDHCI_SIGNAL_ENABLE));
printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
- readw(host->ioaddr + SDHCI_ACMD12_ERR),
- readw(host->ioaddr + SDHCI_SLOT_INT_STATUS));
+ sdhci_readw(host, SDHCI_ACMD12_ERR),
+ sdhci_readw(host, SDHCI_SLOT_INT_STATUS));
printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x | Max curr: 0x%08x\n",
- readl(host->ioaddr + SDHCI_CAPABILITIES),
- readl(host->ioaddr + SDHCI_MAX_CURRENT));
+ sdhci_readl(host, SDHCI_CAPABILITIES),
+ sdhci_readl(host, SDHCI_MAX_CURRENT));
printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n");
}
@@ -87,17 +87,65 @@ static void sdhci_dumpregs(struct sdhci_host *host)
* *
\*****************************************************************************/
+static void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set)
+{
+ u32 ier;
+
+ ier = sdhci_readl(host, SDHCI_INT_ENABLE);
+ ier &= ~clear;
+ ier |= set;
+ sdhci_writel(host, ier, SDHCI_INT_ENABLE);
+ sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE);
+}
+
+static void sdhci_unmask_irqs(struct sdhci_host *host, u32 irqs)
+{
+ sdhci_clear_set_irqs(host, 0, irqs);
+}
+
+static void sdhci_mask_irqs(struct sdhci_host *host, u32 irqs)
+{
+ sdhci_clear_set_irqs(host, irqs, 0);
+}
+
+static void sdhci_set_card_detection(struct sdhci_host *host, bool enable)
+{
+ u32 irqs = SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT;
+
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+ return;
+
+ if (enable)
+ sdhci_unmask_irqs(host, irqs);
+ else
+ sdhci_mask_irqs(host, irqs);
+}
+
+static void sdhci_enable_card_detection(struct sdhci_host *host)
+{
+ sdhci_set_card_detection(host, true);
+}
+
+static void sdhci_disable_card_detection(struct sdhci_host *host)
+{
+ sdhci_set_card_detection(host, false);
+}
+
static void sdhci_reset(struct sdhci_host *host, u8 mask)
{
unsigned long timeout;
+ u32 uninitialized_var(ier);
if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
- if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
+ if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
SDHCI_CARD_PRESENT))
return;
}
- writeb(mask, host->ioaddr + SDHCI_SOFTWARE_RESET);
+ if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
+ ier = sdhci_readl(host, SDHCI_INT_ENABLE);
+
+ sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
if (mask & SDHCI_RESET_ALL)
host->clock = 0;
@@ -106,7 +154,7 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
timeout = 100;
/* hw clears the bit when it's done */
- while (readb(host->ioaddr + SDHCI_SOFTWARE_RESET) & mask) {
+ while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
if (timeout == 0) {
printk(KERN_ERR "%s: Reset 0x%x never completed.\n",
mmc_hostname(host->mmc), (int)mask);
@@ -116,42 +164,44 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
timeout--;
mdelay(1);
}
+
+ if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
+ sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier);
}
static void sdhci_init(struct sdhci_host *host)
{
- u32 intmask;
-
sdhci_reset(host, SDHCI_RESET_ALL);
- intmask = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
+ sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK,
+ SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX |
SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT |
- SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT |
- SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
- SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE |
- SDHCI_INT_ADMA_ERROR;
+ SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE);
+}
- writel(intmask, host->ioaddr + SDHCI_INT_ENABLE);
- writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE);
+static void sdhci_reinit(struct sdhci_host *host)
+{
+ sdhci_init(host);
+ sdhci_enable_card_detection(host);
}
static void sdhci_activate_led(struct sdhci_host *host)
{
u8 ctrl;
- ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+ ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
ctrl |= SDHCI_CTRL_LED;
- writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+ sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
static void sdhci_deactivate_led(struct sdhci_host *host)
{
u8 ctrl;
- ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+ ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
ctrl &= ~SDHCI_CTRL_LED;
- writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+ sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
#ifdef SDHCI_USE_LEDS_CLASS
@@ -205,7 +255,7 @@ static void sdhci_read_block_pio(struct sdhci_host *host)
while (len) {
if (chunk == 0) {
- scratch = readl(host->ioaddr + SDHCI_BUFFER);
+ scratch = sdhci_readl(host, SDHCI_BUFFER);
chunk = 4;
}
@@ -257,7 +307,7 @@ static void sdhci_write_block_pio(struct sdhci_host *host)
len--;
if ((chunk == 4) || ((len == 0) && (blksize == 0))) {
- writel(scratch, host->ioaddr + SDHCI_BUFFER);
+ sdhci_writel(host, scratch, SDHCI_BUFFER);
chunk = 0;
scratch = 0;
}
@@ -292,7 +342,10 @@ static void sdhci_transfer_pio(struct sdhci_host *host)
(host->data->blocks == 1))
mask = ~0;
- while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) {
+ while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
+ if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY)
+ udelay(100);
+
if (host->data->flags & MMC_DATA_READ)
sdhci_read_block_pio(host);
else
@@ -561,6 +614,17 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
return count;
}
+static void sdhci_set_transfer_irqs(struct sdhci_host *host)
+{
+ u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL;
+ u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR;
+
+ if (host->flags & SDHCI_REQ_USE_DMA)
+ sdhci_clear_set_irqs(host, pio_irqs, dma_irqs);
+ else
+ sdhci_clear_set_irqs(host, dma_irqs, pio_irqs);
+}
+
static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
{
u8 count;
@@ -581,7 +645,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
host->data_early = 0;
count = sdhci_calc_timeout(host, data);
- writeb(count, host->ioaddr + SDHCI_TIMEOUT_CONTROL);
+ sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
if (host->flags & SDHCI_USE_DMA)
host->flags |= SDHCI_REQ_USE_DMA;
@@ -661,8 +725,8 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
WARN_ON(1);
host->flags &= ~SDHCI_REQ_USE_DMA;
} else {
- writel(host->adma_addr,
- host->ioaddr + SDHCI_ADMA_ADDRESS);
+ sdhci_writel(host, host->adma_addr,
+ SDHCI_ADMA_ADDRESS);
}
} else {
int sg_cnt;
@@ -681,8 +745,8 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
host->flags &= ~SDHCI_REQ_USE_DMA;
} else {
WARN_ON(sg_cnt != 1);
- writel(sg_dma_address(data->sg),
- host->ioaddr + SDHCI_DMA_ADDRESS);
+ sdhci_writel(host, sg_dma_address(data->sg),
+ SDHCI_DMA_ADDRESS);
}
}
}
@@ -693,14 +757,14 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
* is ADMA.
*/
if (host->version >= SDHCI_SPEC_200) {
- ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+ ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
ctrl &= ~SDHCI_CTRL_DMA_MASK;
if ((host->flags & SDHCI_REQ_USE_DMA) &&
(host->flags & SDHCI_USE_ADMA))
ctrl |= SDHCI_CTRL_ADMA32;
else
ctrl |= SDHCI_CTRL_SDMA;
- writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+ sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
if (!(host->flags & SDHCI_REQ_USE_DMA)) {
@@ -709,10 +773,11 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
host->blocks = data->blocks;
}
+ sdhci_set_transfer_irqs(host);
+
/* We do not handle DMA boundaries, so set it to max (512 KiB) */
- writew(SDHCI_MAKE_BLKSZ(7, data->blksz),
- host->ioaddr + SDHCI_BLOCK_SIZE);
- writew(data->blocks, host->ioaddr + SDHCI_BLOCK_COUNT);
+ sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, data->blksz), SDHCI_BLOCK_SIZE);
+ sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
}
static void sdhci_set_transfer_mode(struct sdhci_host *host,
@@ -733,7 +798,7 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
if (host->flags & SDHCI_REQ_USE_DMA)
mode |= SDHCI_TRNS_DMA;
- writew(mode, host->ioaddr + SDHCI_TRANSFER_MODE);
+ sdhci_writew(host, mode, SDHCI_TRANSFER_MODE);
}
static void sdhci_finish_data(struct sdhci_host *host)
@@ -802,7 +867,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
if (host->mrq->data && (cmd == host->mrq->data->stop))
mask &= ~SDHCI_DATA_INHIBIT;
- while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) {
+ while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
if (timeout == 0) {
printk(KERN_ERR "%s: Controller never released "
"inhibit bit(s).\n", mmc_hostname(host->mmc));
@@ -821,7 +886,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
sdhci_prepare_data(host, cmd->data);
- writel(cmd->arg, host->ioaddr + SDHCI_ARGUMENT);
+ sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);
sdhci_set_transfer_mode(host, cmd->data);
@@ -849,8 +914,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
if (cmd->data)
flags |= SDHCI_CMD_DATA;
- writew(SDHCI_MAKE_CMD(cmd->opcode, flags),
- host->ioaddr + SDHCI_COMMAND);
+ sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
}
static void sdhci_finish_command(struct sdhci_host *host)
@@ -863,15 +927,15 @@ static void sdhci_finish_command(struct sdhci_host *host)
if (host->cmd->flags & MMC_RSP_136) {
/* CRC is stripped so we need to do some shifting. */
for (i = 0;i < 4;i++) {
- host->cmd->resp[i] = readl(host->ioaddr +
+ host->cmd->resp[i] = sdhci_readl(host,
SDHCI_RESPONSE + (3-i)*4) << 8;
if (i != 3)
host->cmd->resp[i] |=
- readb(host->ioaddr +
+ sdhci_readb(host,
SDHCI_RESPONSE + (3-i)*4-1);
}
} else {
- host->cmd->resp[0] = readl(host->ioaddr + SDHCI_RESPONSE);
+ host->cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE);
}
}
@@ -895,7 +959,13 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
if (clock == host->clock)
return;
- writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
+ if (host->ops->set_clock) {
+ host->ops->set_clock(host, clock);
+ if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK)
+ return;
+ }
+
+ sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
if (clock == 0)
goto out;
@@ -908,11 +978,11 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
clk = div << SDHCI_DIVIDER_SHIFT;
clk |= SDHCI_CLOCK_INT_EN;
- writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
/* Wait max 10 ms */
timeout = 10;
- while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL))
+ while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
& SDHCI_CLOCK_INT_STABLE)) {
if (timeout == 0) {
printk(KERN_ERR "%s: Internal clock never "
@@ -925,7 +995,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
}
clk |= SDHCI_CLOCK_CARD_EN;
- writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
out:
host->clock = clock;
@@ -939,7 +1009,7 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
return;
if (power == (unsigned short)-1) {
- writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
+ sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
goto out;
}
@@ -948,7 +1018,7 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
* a new value. Some controllers don't seem to like this though.
*/
if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
- writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
+ sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
pwr = SDHCI_POWER_ON;
@@ -973,10 +1043,9 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
* and set turn on power at the same time, so set the voltage first.
*/
if ((host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
- writeb(pwr & ~SDHCI_POWER_ON,
- host->ioaddr + SDHCI_POWER_CONTROL);
+ sdhci_writeb(host, pwr & ~SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
- writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
+ sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
out:
host->power = power;
@@ -991,6 +1060,7 @@ out:
static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct sdhci_host *host;
+ bool present;
unsigned long flags;
host = mmc_priv(mmc);
@@ -1005,8 +1075,14 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
host->mrq = mrq;
- if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)
- || (host->flags & SDHCI_DEVICE_DEAD)) {
+ /* If polling, assume that the card is always present. */
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+ present = true;
+ else
+ present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
+ SDHCI_CARD_PRESENT;
+
+ if (!present || host->flags & SDHCI_DEVICE_DEAD) {
host->mrq->cmd->error = -ENOMEDIUM;
tasklet_schedule(&host->finish_tasklet);
} else
@@ -1034,8 +1110,8 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
* Should clear out any weird states.
*/
if (ios->power_mode == MMC_POWER_OFF) {
- writel(0, host->ioaddr + SDHCI_SIGNAL_ENABLE);
- sdhci_init(host);
+ sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
+ sdhci_reinit(host);
}
sdhci_set_clock(host, ios->clock);
@@ -1045,7 +1121,7 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
else
sdhci_set_power(host, ios->vdd);
- ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+ ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
if (ios->bus_width == MMC_BUS_WIDTH_4)
ctrl |= SDHCI_CTRL_4BITBUS;
@@ -1057,7 +1133,7 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
else
ctrl &= ~SDHCI_CTRL_HISPD;
- writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+ sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
/*
* Some (ENE) controllers go apeshit on some ios operation,
@@ -1085,10 +1161,12 @@ static int sdhci_get_ro(struct mmc_host *mmc)
if (host->flags & SDHCI_DEVICE_DEAD)
present = 0;
else
- present = readl(host->ioaddr + SDHCI_PRESENT_STATE);
+ present = sdhci_readl(host, SDHCI_PRESENT_STATE);
spin_unlock_irqrestore(&host->lock, flags);
+ if (host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT)
+ return !!(present & SDHCI_WRITE_PROTECT);
return !(present & SDHCI_WRITE_PROTECT);
}
@@ -1096,7 +1174,6 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct sdhci_host *host;
unsigned long flags;
- u32 ier;
host = mmc_priv(mmc);
@@ -1105,15 +1182,10 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
if (host->flags & SDHCI_DEVICE_DEAD)
goto out;
- ier = readl(host->ioaddr + SDHCI_INT_ENABLE);
-
- ier &= ~SDHCI_INT_CARD_INT;
if (enable)
- ier |= SDHCI_INT_CARD_INT;
-
- writel(ier, host->ioaddr + SDHCI_INT_ENABLE);
- writel(ier, host->ioaddr + SDHCI_SIGNAL_ENABLE);
-
+ sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT);
+ else
+ sdhci_mask_irqs(host, SDHCI_INT_CARD_INT);
out:
mmiowb();
@@ -1142,7 +1214,7 @@ static void sdhci_tasklet_card(unsigned long param)
spin_lock_irqsave(&host->lock, flags);
- if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
+ if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
if (host->mrq) {
printk(KERN_ERR "%s: Card removed during transfer!\n",
mmc_hostname(host->mmc));
@@ -1346,8 +1418,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
* we need to at least restart the transfer.
*/
if (intmask & SDHCI_INT_DMA_END)
- writel(readl(host->ioaddr + SDHCI_DMA_ADDRESS),
- host->ioaddr + SDHCI_DMA_ADDRESS);
+ sdhci_writel(host, sdhci_readl(host, SDHCI_DMA_ADDRESS),
+ SDHCI_DMA_ADDRESS);
if (intmask & SDHCI_INT_DATA_END) {
if (host->cmd) {
@@ -1373,7 +1445,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
spin_lock(&host->lock);
- intmask = readl(host->ioaddr + SDHCI_INT_STATUS);
+ intmask = sdhci_readl(host, SDHCI_INT_STATUS);
if (!intmask || intmask == 0xffffffff) {
result = IRQ_NONE;
@@ -1384,22 +1456,22 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
mmc_hostname(host->mmc), intmask);
if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) {
- writel(intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE),
- host->ioaddr + SDHCI_INT_STATUS);
+ sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT |
+ SDHCI_INT_CARD_REMOVE), SDHCI_INT_STATUS);
tasklet_schedule(&host->card_tasklet);
}
intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE);
if (intmask & SDHCI_INT_CMD_MASK) {
- writel(intmask & SDHCI_INT_CMD_MASK,
- host->ioaddr + SDHCI_INT_STATUS);
+ sdhci_writel(host, intmask & SDHCI_INT_CMD_MASK,
+ SDHCI_INT_STATUS);
sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
}
if (intmask & SDHCI_INT_DATA_MASK) {
- writel(intmask & SDHCI_INT_DATA_MASK,
- host->ioaddr + SDHCI_INT_STATUS);
+ sdhci_writel(host, intmask & SDHCI_INT_DATA_MASK,
+ SDHCI_INT_STATUS);
sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK);
}
@@ -1410,7 +1482,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
if (intmask & SDHCI_INT_BUS_POWER) {
printk(KERN_ERR "%s: Card is consuming too much power!\n",
mmc_hostname(host->mmc));
- writel(SDHCI_INT_BUS_POWER, host->ioaddr + SDHCI_INT_STATUS);
+ sdhci_writel(host, SDHCI_INT_BUS_POWER, SDHCI_INT_STATUS);
}
intmask &= ~SDHCI_INT_BUS_POWER;
@@ -1425,7 +1497,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
mmc_hostname(host->mmc), intmask);
sdhci_dumpregs(host);
- writel(intmask, host->ioaddr + SDHCI_INT_STATUS);
+ sdhci_writel(host, intmask, SDHCI_INT_STATUS);
}
result = IRQ_HANDLED;
@@ -1455,6 +1527,8 @@ int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state)
{
int ret;
+ sdhci_disable_card_detection(host);
+
ret = mmc_suspend_host(host->mmc, state);
if (ret)
return ret;
@@ -1487,6 +1561,8 @@ int sdhci_resume_host(struct sdhci_host *host)
if (ret)
return ret;
+ sdhci_enable_card_detection(host);
+
return 0;
}
@@ -1537,7 +1613,7 @@ int sdhci_add_host(struct sdhci_host *host)
sdhci_reset(host, SDHCI_RESET_ALL);
- host->version = readw(host->ioaddr + SDHCI_HOST_VERSION);
+ host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
host->version = (host->version & SDHCI_SPEC_VER_MASK)
>> SDHCI_SPEC_VER_SHIFT;
if (host->version > SDHCI_SPEC_200) {
@@ -1546,7 +1622,7 @@ int sdhci_add_host(struct sdhci_host *host)
host->version);
}
- caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
+ caps = sdhci_readl(host, SDHCI_CAPABILITIES);
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_DMA;
@@ -1614,19 +1690,27 @@ int sdhci_add_host(struct sdhci_host *host)
host->max_clk =
(caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
+ host->max_clk *= 1000000;
if (host->max_clk == 0) {
- printk(KERN_ERR "%s: Hardware doesn't specify base clock "
- "frequency.\n", mmc_hostname(mmc));
- return -ENODEV;
+ if (!host->ops->get_max_clock) {
+ printk(KERN_ERR
+ "%s: Hardware doesn't specify base clock "
+ "frequency.\n", mmc_hostname(mmc));
+ return -ENODEV;
+ }
+ host->max_clk = host->ops->get_max_clock(host);
}
- host->max_clk *= 1000000;
host->timeout_clk =
(caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT;
if (host->timeout_clk == 0) {
- printk(KERN_ERR "%s: Hardware doesn't specify timeout clock "
- "frequency.\n", mmc_hostname(mmc));
- return -ENODEV;
+ if (!host->ops->get_timeout_clock) {
+ printk(KERN_ERR
+ "%s: Hardware doesn't specify timeout clock "
+ "frequency.\n", mmc_hostname(mmc));
+ return -ENODEV;
+ }
+ host->timeout_clk = host->ops->get_timeout_clock(host);
}
if (caps & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
@@ -1642,6 +1726,9 @@ int sdhci_add_host(struct sdhci_host *host)
if (caps & SDHCI_CAN_DO_HISPD)
mmc->caps |= MMC_CAP_SD_HIGHSPEED;
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+ mmc->caps |= MMC_CAP_NEEDS_POLL;
+
mmc->ocr_avail = 0;
if (caps & SDHCI_CAN_VDD_330)
mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34;
@@ -1690,13 +1777,19 @@ int sdhci_add_host(struct sdhci_host *host)
* Maximum block size. This varies from controller to controller and
* is specified in the capabilities register.
*/
- mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT;
- if (mmc->max_blk_size >= 3) {
- printk(KERN_WARNING "%s: Invalid maximum block size, "
- "assuming 512 bytes\n", mmc_hostname(mmc));
- mmc->max_blk_size = 512;
- } else
- mmc->max_blk_size = 512 << mmc->max_blk_size;
+ if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) {
+ mmc->max_blk_size = 2;
+ } else {
+ mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >>
+ SDHCI_MAX_BLOCK_SHIFT;
+ if (mmc->max_blk_size >= 3) {
+ printk(KERN_WARNING "%s: Invalid maximum block size, "
+ "assuming 512 bytes\n", mmc_hostname(mmc));
+ mmc->max_blk_size = 0;
+ }
+ }
+
+ mmc->max_blk_size = 512 << mmc->max_blk_size;
/*
* Maximum block count.
@@ -1746,6 +1839,8 @@ int sdhci_add_host(struct sdhci_host *host)
(host->flags & SDHCI_USE_ADMA)?"A":"",
(host->flags & SDHCI_USE_DMA)?"DMA":"PIO");
+ sdhci_enable_card_detection(host);
+
return 0;
#ifdef SDHCI_USE_LEDS_CLASS
@@ -1782,6 +1877,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
spin_unlock_irqrestore(&host->lock, flags);
}
+ sdhci_disable_card_detection(host);
+
mmc_remove_host(host->mmc);
#ifdef SDHCI_USE_LEDS_CLASS
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 43c37c68d07..f20a834f430 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -10,6 +10,9 @@
*/
#include <linux/scatterlist.h>
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/io.h>
/*
* Controller registers
@@ -123,6 +126,7 @@
SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
SDHCI_INT_DATA_END_BIT)
+#define SDHCI_INT_ALL_MASK ((unsigned int)-1)
#define SDHCI_ACMD12_ERR 0x3C
@@ -210,6 +214,18 @@ struct sdhci_host {
#define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13)
/* Controller does not provide transfer-complete interrupt when not busy */
#define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14)
+/* Controller has unreliable card detection */
+#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15)
+/* Controller reports inverted write-protect state */
+#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16)
+/* Controller has nonstandard clock management */
+#define SDHCI_QUIRK_NONSTANDARD_CLOCK (1<<17)
+/* Controller does not like fast PIO transfers */
+#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
+/* Controller losing signal/interrupt enable states after reset */
+#define SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET (1<<19)
+/* Controller has to be forced to use block size of 2048 bytes */
+#define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */
@@ -267,9 +283,105 @@ struct sdhci_host {
struct sdhci_ops {
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+ u32 (*readl)(struct sdhci_host *host, int reg);
+ u16 (*readw)(struct sdhci_host *host, int reg);
+ u8 (*readb)(struct sdhci_host *host, int reg);
+ void (*writel)(struct sdhci_host *host, u32 val, int reg);
+ void (*writew)(struct sdhci_host *host, u16 val, int reg);
+ void (*writeb)(struct sdhci_host *host, u8 val, int reg);
+#endif
+
+ void (*set_clock)(struct sdhci_host *host, unsigned int clock);
+
int (*enable_dma)(struct sdhci_host *host);
+ unsigned int (*get_max_clock)(struct sdhci_host *host);
+ unsigned int (*get_timeout_clock)(struct sdhci_host *host);
};
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+
+static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
+{
+ if (unlikely(host->ops->writel))
+ host->ops->writel(host, val, reg);
+ else
+ writel(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
+{
+ if (unlikely(host->ops->writew))
+ host->ops->writew(host, val, reg);
+ else
+ writew(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+ if (unlikely(host->ops->writeb))
+ host->ops->writeb(host, val, reg);
+ else
+ writeb(val, host->ioaddr + reg);
+}
+
+static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
+{
+ if (unlikely(host->ops->readl))
+ return host->ops->readl(host, reg);
+ else
+ return readl(host->ioaddr + reg);
+}
+
+static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
+{
+ if (unlikely(host->ops->readw))
+ return host->ops->readw(host, reg);
+ else
+ return readw(host->ioaddr + reg);
+}
+
+static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
+{
+ if (unlikely(host->ops->readb))
+ return host->ops->readb(host, reg);
+ else
+ return readb(host->ioaddr + reg);
+}
+
+#else
+
+static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
+{
+ writel(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
+{
+ writew(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+ writeb(val, host->ioaddr + reg);
+}
+
+static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
+{
+ return readl(host->ioaddr + reg);
+}
+
+static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
+{
+ return readw(host->ioaddr + reg);
+}
+
+static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
+{
+ return readb(host->ioaddr + reg);
+}
+
+#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
size_t priv_size);
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index 6a7a6190483..63fbd5b7d31 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -568,11 +568,11 @@ static int __devinit tmio_mmc_probe(struct platform_device *dev)
host->mmc = mmc;
platform_set_drvdata(dev, mmc);
- host->ctl = ioremap(res_ctl->start, res_ctl->end - res_ctl->start);
+ host->ctl = ioremap(res_ctl->start, resource_size(res_ctl));
if (!host->ctl)
goto host_free;
- host->cnf = ioremap(res_cnf->start, res_cnf->end - res_cnf->start);
+ host->cnf = ioremap(res_cnf->start, resource_size(res_cnf));
if (!host->cnf)
goto unmap_ctl;
@@ -650,10 +650,10 @@ static int __devexit tmio_mmc_remove(struct platform_device *dev)
if (mmc) {
struct tmio_mmc_host *host = mmc_priv(mmc);
mmc_remove_host(mmc);
- mmc_free_host(mmc);
free_irq(host->irq, host);
iounmap(host->ctl);
iounmap(host->cnf);
+ mmc_free_host(mmc);
}
return 0;
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index ba2b4240a86..9c831ab2ece 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -8,6 +8,9 @@
* published by the Free Software Foundation.
*
*/
+
+#include <linux/highmem.h>
+
#define CNF_CMD 0x04
#define CNF_CTL_BASE 0x10
#define CNF_INT_PIN 0x3d
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 01:47:10 +0000