diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-12 11:51:57 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-12 11:51:57 -0700 |
commit | 46b5e34029fef7a042f3ff16e319e737257e5c7b (patch) | |
tree | c2e90b7a6d7c39c3a35eed1dfd0fd19077467c93 /drivers/mmc/host/mmc_spi.c | |
parent | 94a9f8ad337aec011da2ca901ef89ae7e885f24c (diff) | |
parent | 6ee6c6adf1cfebbf432b8d1f204c7f96e395933e (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: (24 commits)
MMC: Use timeout values from CSR
MMC: CSD and CID timeout values
sdhci: 'scratch' may be used uninitialized
mmc: explicitly mention SDIO support in Kconfig
mmc: remove redundant "depends on"
Fix comment in include/linux/mmc/host.h
sdio: high-speed support
mmc_block: hard code 512 byte block size
sdhci: force high speed capability on some controllers
mmc_block: filter out PC requests
mmc_block: indicate strict ordering
mmc_block: inform block layer about sector count restriction
sdio: give sdio irq thread a host specific name
sdio: make sleep on error interruptable
sdhci: reduce card detection delay
sdhci: let the controller wait for busy state to end
atmel-mci: Add missing flush_dcache_page() in PIO transfer code
atmel-mci: Don't overwrite error bits when NOTBUSY is set
atmel-mci: Add experimental DMA support
atmel-mci: support multiple mmc slots
...
Diffstat (limited to 'drivers/mmc/host/mmc_spi.c')
-rw-r--r-- | drivers/mmc/host/mmc_spi.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index 7503b81374e..07faf5412a1 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -95,8 +95,6 @@ * reads which takes nowhere near that long. Older cards may be able to use * shorter timeouts ... but why bother? */ -#define readblock_timeout ktime_set(0, 100 * 1000 * 1000) -#define writeblock_timeout ktime_set(0, 250 * 1000 * 1000) #define r1b_timeout ktime_set(3, 0) @@ -220,9 +218,9 @@ mmc_spi_wait_unbusy(struct mmc_spi_host *host, ktime_t timeout) return mmc_spi_skip(host, timeout, sizeof(host->data->status), 0); } -static int mmc_spi_readtoken(struct mmc_spi_host *host) +static int mmc_spi_readtoken(struct mmc_spi_host *host, ktime_t timeout) { - return mmc_spi_skip(host, readblock_timeout, 1, 0xff); + return mmc_spi_skip(host, timeout, 1, 0xff); } @@ -605,7 +603,8 @@ mmc_spi_setup_data_message( * Return negative errno, else success. */ static int -mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t) +mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t, + ktime_t timeout) { struct spi_device *spi = host->spi; int status, i; @@ -673,7 +672,7 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t) if (scratch->status[i] != 0) return 0; } - return mmc_spi_wait_unbusy(host, writeblock_timeout); + return mmc_spi_wait_unbusy(host, timeout); } /* @@ -693,7 +692,8 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t) * STOP_TRANSMISSION command. */ static int -mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t) +mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t, + ktime_t timeout) { struct spi_device *spi = host->spi; int status; @@ -707,7 +707,7 @@ mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t) return status; status = scratch->status[0]; if (status == 0xff || status == 0) - status = mmc_spi_readtoken(host); + status = mmc_spi_readtoken(host, timeout); if (status == SPI_TOKEN_SINGLE) { if (host->dma_dev) { @@ -778,6 +778,8 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd, struct scatterlist *sg; unsigned n_sg; int multiple = (data->blocks > 1); + u32 clock_rate; + ktime_t timeout; if (data->flags & MMC_DATA_READ) direction = DMA_FROM_DEVICE; @@ -786,6 +788,14 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd, mmc_spi_setup_data_message(host, multiple, direction); t = &host->t; + if (t->speed_hz) + clock_rate = t->speed_hz; + else + clock_rate = spi->max_speed_hz; + + timeout = ktime_add_ns(ktime_set(0, 0), data->timeout_ns + + data->timeout_clks * 1000000 / clock_rate); + /* Handle scatterlist segments one at a time, with synch for * each 512-byte block */ @@ -832,9 +842,9 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd, t->len); if (direction == DMA_TO_DEVICE) - status = mmc_spi_writeblock(host, t); + status = mmc_spi_writeblock(host, t, timeout); else - status = mmc_spi_readblock(host, t); + status = mmc_spi_readblock(host, t, timeout); if (status < 0) break; @@ -917,7 +927,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd, if (scratch->status[tmp] != 0) return; } - tmp = mmc_spi_wait_unbusy(host, writeblock_timeout); + tmp = mmc_spi_wait_unbusy(host, timeout); if (tmp < 0 && !data->error) data->error = tmp; } |