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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:
  mmc_spi: support for non-byte-aligned cards
  omap_hsmmc: Do not expect cmd/data to be non-null when CC/TC occurs
  mmc: Fix compile for omap_hsmmc.c
  mmc_spi: convert timeout handling to jiffies and avoid busy waiting
  mmc_spi: do not check CID and CSD blocks with CRC16
  omap_hsmmc: Flush posted write to IRQ
  New mail address for Pierre Ossman
  imxmmc: move RSSR BLR
  imxmmc: init-exit rework
  mmc: Accept EXT_CSD rev 1.3 since it is backwards compatible with 1.2
This commit is contained in:
Linus Torvalds 2009-04-08 14:33:59 -07:00
parent 7831d56b0a ab5a643cf5
commit d2e2d7ca14
9 changed files with 166 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
MAINTAINERS
View File

@ -3057,7 +3057,7 @@ S: Supported
MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
P: Pierre Ossman
M: drzeus-mmc@drzeus.cx
M: pierre@ossman.eu
L: linux-kernel@vger.kernel.org
S: Maintained
@ -3939,7 +3939,7 @@ S: Maintained
SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) DRIVER
P: Pierre Ossman
M: drzeus-sdhci@drzeus.cx
M: pierre@ossman.eu
L: sdhci-devel@lists.ossman.eu
S: Maintained
@ -4926,7 +4926,7 @@ S: Maintained
W83L51xD SD/MMC CARD INTERFACE DRIVER
P: Pierre Ossman
M: drzeus-wbsd@drzeus.cx
M: pierre@ossman.eu
L: linux-kernel@vger.kernel.org
S: Maintained

2
drivers/mmc/core/mmc.c
View File

@ -208,7 +208,7 @@ static int mmc_read_ext_csd(struct mmc_card *card)
}
ext_csd_struct = ext_csd[EXT_CSD_REV];
if (ext_csd_struct > 2) {
if (ext_csd_struct > 3) {
printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
ext_csd_struct);

21
drivers/mmc/core/sd.c
View File

@ -362,15 +362,6 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
if (err)
goto err;
/*
* For SPI, enable CRC as appropriate.
*/
if (mmc_host_is_spi(host)) {
err = mmc_spi_set_crc(host, use_spi_crc);
if (err)
goto err;
}
/*
* Fetch CID from card.
*/
@ -457,6 +448,18 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
goto free_card;
}
/*
* For SPI, enable CRC as appropriate.
* This CRC enable is located AFTER the reading of the
* card registers because some SDHC cards are not able
* to provide valid CRCs for non-512-byte blocks.
*/
if (mmc_host_is_spi(host)) {
err = mmc_spi_set_crc(host, use_spi_crc);
if (err)
goto free_card;
}
/*
* Attempt to change to high-speed (if supported)
*/

19
drivers/mmc/host/imxmmc.c
View File

@ -307,13 +307,6 @@ static void imxmci_setup_data(struct imxmci_host *host, struct mmc_data *data)
wmb();
if (host->actual_bus_width == MMC_BUS_WIDTH_4)
BLR(host->dma) = 0; /* burst 64 byte read / 64 bytes write */
else
BLR(host->dma) = 16; /* burst 16 byte read / 16 bytes write */
RSSR(host->dma) = DMA_REQ_SDHC;
set_bit(IMXMCI_PEND_DMA_DATA_b, &host->pending_events);
clear_bit(IMXMCI_PEND_CPU_DATA_b, &host->pending_events);
@ -818,9 +811,11 @@ static void imxmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (ios->bus_width == MMC_BUS_WIDTH_4) {
host->actual_bus_width = MMC_BUS_WIDTH_4;
imx_gpio_mode(PB11_PF_SD_DAT3);
BLR(host->dma) = 0; /* burst 64 byte read/write */
} else {
host->actual_bus_width = MMC_BUS_WIDTH_1;
imx_gpio_mode(GPIO_PORTB | GPIO_IN | GPIO_PUEN | 11);
BLR(host->dma) = 16; /* burst 16 byte read/write */
}
if (host->power_mode != ios->power_mode) {
@ -938,7 +933,7 @@ static void imxmci_check_status(unsigned long data)
mod_timer(&host->timer, jiffies + (HZ>>1));
}
static int imxmci_probe(struct platform_device *pdev)
static int __init imxmci_probe(struct platform_device *pdev)
{
struct mmc_host *mmc;
struct imxmci_host *host = NULL;
@ -1034,6 +1029,7 @@ static int imxmci_probe(struct platform_device *pdev)
}
host->dma_allocated = 1;
imx_dma_setup_handlers(host->dma, imxmci_dma_irq, NULL, host);
RSSR(host->dma) = DMA_REQ_SDHC;
tasklet_init(&host->tasklet, imxmci_tasklet_fnc, (unsigned long)host);
host->status_reg=0;
@ -1079,7 +1075,7 @@ out:
return ret;
}
static int imxmci_remove(struct platform_device *pdev)
static int __exit imxmci_remove(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
@ -1145,8 +1141,7 @@ static int imxmci_resume(struct platform_device *dev)
#endif /* CONFIG_PM */
static struct platform_driver imxmci_driver = {
.probe = imxmci_probe,
.remove = imxmci_remove,
.remove = __exit_p(imxmci_remove),
.suspend = imxmci_suspend,
.resume = imxmci_resume,
.driver = {
@ -1157,7 +1152,7 @@ static struct platform_driver imxmci_driver = {
static int __init imxmci_init(void)
{
return platform_driver_register(&imxmci_driver);
return platform_driver_probe(&imxmci_driver, imxmci_probe);
}
static void __exit imxmci_exit(void)

192
drivers/mmc/host/mmc_spi.c
View File

@ -24,7 +24,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/hrtimer.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/bio.h>
#include <linux/dma-mapping.h>
@ -95,7 +95,7 @@
* reads which takes nowhere near that long. Older cards may be able to use
* shorter timeouts ... but why bother?
*/
#define r1b_timeout ktime_set(3, 0)
#define r1b_timeout (HZ * 3)
/****************************************************************************/
@ -183,12 +183,11 @@ mmc_spi_readbytes(struct mmc_spi_host *host, unsigned len)
return status;
}
static int
mmc_spi_skip(struct mmc_spi_host *host, ktime_t timeout, unsigned n, u8 byte)
static int mmc_spi_skip(struct mmc_spi_host *host, unsigned long timeout,
unsigned n, u8 byte)
{
u8 *cp = host->data->status;
timeout = ktime_add(timeout, ktime_get());
unsigned long start = jiffies;
while (1) {
int status;
@ -203,22 +202,26 @@ mmc_spi_skip(struct mmc_spi_host *host, ktime_t timeout, unsigned n, u8 byte)
return cp[i];
}
/* REVISIT investigate msleep() to avoid busy-wait I/O
* in at least some cases.
*/
if (ktime_to_ns(ktime_sub(ktime_get(), timeout)) > 0)
if (time_is_before_jiffies(start + timeout))
break;
/* If we need long timeouts, we may release the CPU.
* We use jiffies here because we want to have a relation
* between elapsed time and the blocking of the scheduler.
*/
if (time_is_before_jiffies(start+1))
schedule();
}
return -ETIMEDOUT;
}
static inline int
mmc_spi_wait_unbusy(struct mmc_spi_host *host, ktime_t timeout)
mmc_spi_wait_unbusy(struct mmc_spi_host *host, unsigned long timeout)
{
return mmc_spi_skip(host, timeout, sizeof(host->data->status), 0);
}
static int mmc_spi_readtoken(struct mmc_spi_host *host, ktime_t timeout)
static int mmc_spi_readtoken(struct mmc_spi_host *host, unsigned long timeout)
{
return mmc_spi_skip(host, timeout, 1, 0xff);
}
@ -251,6 +254,10 @@ static int mmc_spi_response_get(struct mmc_spi_host *host,
u8 *cp = host->data->status;
u8 *end = cp + host->t.len;
int value = 0;
int bitshift;
u8 leftover = 0;
unsigned short rotator;
int i;
char tag[32];
snprintf(tag, sizeof(tag), " ... CMD%d response SPI_%s",
@ -268,9 +275,8 @@ static int mmc_spi_response_get(struct mmc_spi_host *host,
/* Data block reads (R1 response types) may need more data... */
if (cp == end) {
unsigned i;
cp = host->data->status;
end = cp+1;
/* Card sends N(CR) (== 1..8) bytes of all-ones then one
* status byte ... and we already scanned 2 bytes.
@ -295,20 +301,34 @@ static int mmc_spi_response_get(struct mmc_spi_host *host,
}
checkstatus:
if (*cp & 0x80) {
dev_dbg(&host->spi->dev, "%s: INVALID RESPONSE, %02x\n",
tag, *cp);
value = -EBADR;
goto done;
bitshift = 0;
if (*cp & 0x80) {
/* Houston, we have an ugly card with a bit-shifted response */
rotator = *cp++ << 8;
/* read the next byte */
if (cp == end) {
value = mmc_spi_readbytes(host, 1);
if (value < 0)
goto done;
cp = host->data->status;
end = cp+1;
}
rotator |= *cp++;
while (rotator & 0x8000) {
bitshift++;
rotator <<= 1;
}
cmd->resp[0] = rotator >> 8;
leftover = rotator;
} else {
cmd->resp[0] = *cp++;
}
cmd->resp[0] = *cp++;
cmd->error = 0;
/* Status byte: the entire seven-bit R1 response. */
if (cmd->resp[0] != 0) {
if ((R1_SPI_PARAMETER | R1_SPI_ADDRESS
| R1_SPI_ILLEGAL_COMMAND)
| R1_SPI_ILLEGAL_COMMAND)
& cmd->resp[0])
value = -EINVAL;
else if (R1_SPI_COM_CRC & cmd->resp[0])
@ -336,12 +356,45 @@ checkstatus:
* SPI R5 == R1 + data byte; IO_RW_DIRECT
*/
case MMC_RSP_SPI_R2:
cmd->resp[0] |= *cp << 8;
/* read the next byte */
if (cp == end) {
value = mmc_spi_readbytes(host, 1);
if (value < 0)
goto done;
cp = host->data->status;
end = cp+1;
}
if (bitshift) {
rotator = leftover << 8;
rotator |= *cp << bitshift;
cmd->resp[0] |= (rotator & 0xFF00);
} else {
cmd->resp[0] |= *cp << 8;
}
break;
/* SPI R3, R4, or R7 == R1 + 4 bytes */
case MMC_RSP_SPI_R3:
cmd->resp[1] = get_unaligned_be32(cp);
rotator = leftover << 8;
cmd->resp[1] = 0;
for (i = 0; i < 4; i++) {
cmd->resp[1] <<= 8;
/* read the next byte */
if (cp == end) {
value = mmc_spi_readbytes(host, 1);
if (value < 0)
goto done;
cp = host->data->status;
end = cp+1;
}
if (bitshift) {
rotator |= *cp++ << bitshift;
cmd->resp[1] |= (rotator >> 8);
rotator <<= 8;
} else {
cmd->resp[1] |= *cp++;
}
}
break;
/* SPI R1 == just one status byte */
@ -607,7 +660,7 @@ mmc_spi_setup_data_message(
*/
static int
mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,
ktime_t timeout)
unsigned long timeout)
{
struct spi_device *spi = host->spi;
int status, i;
@ -717,11 +770,13 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,
*/
static int
mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,
ktime_t timeout)
unsigned long timeout)
{
struct spi_device *spi = host->spi;
int status;
struct scratch *scratch = host->data;
unsigned int bitshift;
u8 leftover;
/* At least one SD card sends an all-zeroes byte when N(CX)
* applies, before the all-ones bytes ... just cope with that.
@ -733,38 +788,60 @@ mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,
if (status == 0xff || status == 0)
status = mmc_spi_readtoken(host, timeout);
if (status == SPI_TOKEN_SINGLE) {
if (host->dma_dev) {
dma_sync_single_for_device(host->dma_dev,
host->data_dma, sizeof(*scratch),
DMA_BIDIRECTIONAL);
dma_sync_single_for_device(host->dma_dev,
t->rx_dma, t->len,
DMA_FROM_DEVICE);
}
status = spi_sync(spi, &host->m);
if (host->dma_dev) {
dma_sync_single_for_cpu(host->dma_dev,
host->data_dma, sizeof(*scratch),
DMA_BIDIRECTIONAL);
dma_sync_single_for_cpu(host->dma_dev,
t->rx_dma, t->len,
DMA_FROM_DEVICE);
}
} else {
if (status < 0) {
dev_dbg(&spi->dev, "read error %02x (%d)\n", status, status);
return status;
}
/* we've read extra garbage, timed out, etc */
if (status < 0)
return status;
/* The token may be bit-shifted...
* the first 0-bit precedes the data stream.
*/
bitshift = 7;
while (status & 0x80) {
status <<= 1;
bitshift--;
}
leftover = status << 1;
/* low four bits are an R2 subset, fifth seems to be
* vendor specific ... map them all to generic error..
if (host->dma_dev) {
dma_sync_single_for_device(host->dma_dev,
host->data_dma, sizeof(*scratch),
DMA_BIDIRECTIONAL);
dma_sync_single_for_device(host->dma_dev,
t->rx_dma, t->len,
DMA_FROM_DEVICE);
}
status = spi_sync(spi, &host->m);
if (host->dma_dev) {
dma_sync_single_for_cpu(host->dma_dev,
host->data_dma, sizeof(*scratch),
DMA_BIDIRECTIONAL);
dma_sync_single_for_cpu(host->dma_dev,
t->rx_dma, t->len,
DMA_FROM_DEVICE);
}
if (bitshift) {
/* Walk through the data and the crc and do
* all the magic to get byte-aligned data.
*/
return -EIO;
u8 *cp = t->rx_buf;
unsigned int len;
unsigned int bitright = 8 - bitshift;
u8 temp;
for (len = t->len; len; len--) {
temp = *cp;
*cp++ = leftover | (temp >> bitshift);
leftover = temp << bitright;
}
cp = (u8 *) &scratch->crc_val;
temp = *cp;
*cp++ = leftover | (temp >> bitshift);
leftover = temp << bitright;
temp = *cp;
*cp = leftover | (temp >> bitshift);
}
if (host->mmc->use_spi_crc) {
@ -803,7 +880,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
unsigned n_sg;
int multiple = (data->blocks > 1);
u32 clock_rate;
ktime_t timeout;
unsigned long timeout;
if (data->flags & MMC_DATA_READ)
direction = DMA_FROM_DEVICE;
@ -817,8 +894,9 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
else
clock_rate = spi->max_speed_hz;
timeout = ktime_add_ns(ktime_set(0, 0), data->timeout_ns +
data->timeout_clks * 1000000 / clock_rate);
timeout = data->timeout_ns +
data->timeout_clks * 1000000 / clock_rate;
timeout = usecs_to_jiffies((unsigned int)(timeout / 1000)) + 1;
/* Handle scatterlist segments one at a time, with synch for
* each 512-byte block

7
drivers/mmc/host/omap_hsmmc.c
View File

@ -298,7 +298,6 @@ mmc_omap_xfer_done(struct mmc_omap_host *host, struct mmc_data *data)
struct mmc_request *mrq = host->mrq;
host->mrq = NULL;
mmc_omap_fclk_lazy_disable(host);
mmc_request_done(host->mmc, mrq);
return;
}
@ -434,6 +433,8 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
if (host->mrq == NULL) {
OMAP_HSMMC_WRITE(host->base, STAT,
OMAP_HSMMC_READ(host->base, STAT));
/* Flush posted write */
OMAP_HSMMC_READ(host->base, STAT);
return IRQ_HANDLED;
}
@ -489,8 +490,10 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id)
}
OMAP_HSMMC_WRITE(host->base, STAT, status);
/* Flush posted write */
OMAP_HSMMC_READ(host->base, STAT);
if (end_cmd || (status & CC))
if (end_cmd || ((status & CC) && host->cmd))
mmc_omap_cmd_done(host, host->cmd);
if (end_trans || (status & TC))
mmc_omap_xfer_done(host, data);

2
drivers/mmc/host/sdhci-pci.c
View File

@ -729,6 +729,6 @@ static void __exit sdhci_drv_exit(void)
module_init(sdhci_drv_init);
module_exit(sdhci_drv_exit);
MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
MODULE_LICENSE("GPL");

2
drivers/mmc/host/sdhci.c
View File

@ -1935,7 +1935,7 @@ module_exit(sdhci_drv_exit);
module_param(debug_quirks, uint, 0444);
MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
MODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver");
MODULE_LICENSE("GPL");

2
drivers/mmc/host/wbsd.c
View File

@ -2036,7 +2036,7 @@ module_param_named(irq, param_irq, uint, 0444);
module_param_named(dma, param_dma, int, 0444);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
MODULE_DESCRIPTION("Winbond W83L51xD SD/MMC card interface driver");
#ifdef CONFIG_PNP