diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:46:57 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:46:57 -0700 |
commit | 2625b10d8c37656cf410a464ed95942b3abbd1f6 (patch) | |
tree | f02fc44aaed07dceed2566b3fdf4dc64b786cb89 /drivers/mmc/core/core.c | |
parent | 489f7ab6c18cdd64a2d444e056d60a0e722f4ad7 (diff) | |
parent | 7f72134c32eb64c77d1fb35123ba8bf815bf797c (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: (25 commits)
atmel-mci: add MCI2 register definitions
atmel-mci: Integrate AT91 specific definition in header file
tmio_mmc: allow compilation for ASIC3
mmc_block: do not DMA to stack
sdhci: Print ADMA status and pointer on debug
tmio_mmc: fix clock setup
tmio_mmc: map SD control registers after enabling the MFD cell
tmio_mmc: correct probe return value for num_resources != 3
tmio_mmc: don't use set_irq_type
tmio_mmc: add bus_shift support
MFD,mmc: tmio_mmc: make HCLK configurable
mmc_spi: don't use EINVAL for possible transmission errors
cb710: more cleanup for the DEBUG case.
sdhci: platform driver for SDHCI
mxcmmc: remove frequency workaround
cb710: handle DEBUG define in Makefile
cb710: add missing parenthesis
cb710: fix printk format string
mmc: Driver for CB710/720 memory card reader (MMC part)
pxamci: add regulator support.
...
Diffstat (limited to 'drivers/mmc/core/core.c')
-rw-r--r-- | drivers/mmc/core/core.c | 107 |
1 files changed, 62 insertions, 45 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 26491173275..d84c880fac8 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -708,7 +708,13 @@ static void mmc_power_up(struct mmc_host *host) */ mmc_delay(10); - host->ios.clock = host->f_min; + if (host->f_min > 400000) { + pr_warning("%s: Minimum clock frequency too high for " + "identification mode\n", mmc_hostname(host)); + host->ios.clock = host->f_min; + } else + host->ios.clock = 400000; + host->ios.power_mode = MMC_POWER_ON; mmc_set_ios(host); @@ -855,61 +861,72 @@ void mmc_rescan(struct work_struct *work) mmc_bus_get(host); - if (host->bus_ops == NULL) { - /* - * Only we can add a new handler, so it's safe to - * release the lock here. - */ + /* if there is a card registered, check whether it is still present */ + if ((host->bus_ops != NULL) && host->bus_ops->detect && !host->bus_dead) + host->bus_ops->detect(host); + + mmc_bus_put(host); + + + mmc_bus_get(host); + + /* if there still is a card present, stop here */ + if (host->bus_ops != NULL) { mmc_bus_put(host); + goto out; + } - if (host->ops->get_cd && host->ops->get_cd(host) == 0) - goto out; + /* detect a newly inserted card */ - mmc_claim_host(host); + /* + * Only we can add a new handler, so it's safe to + * release the lock here. + */ + mmc_bus_put(host); - mmc_power_up(host); - mmc_go_idle(host); + if (host->ops->get_cd && host->ops->get_cd(host) == 0) + goto out; - mmc_send_if_cond(host, host->ocr_avail); + mmc_claim_host(host); - /* - * First we search for SDIO... - */ - err = mmc_send_io_op_cond(host, 0, &ocr); - if (!err) { - if (mmc_attach_sdio(host, ocr)) - mmc_power_off(host); - goto out; - } + mmc_power_up(host); + mmc_go_idle(host); - /* - * ...then normal SD... - */ - err = mmc_send_app_op_cond(host, 0, &ocr); - if (!err) { - if (mmc_attach_sd(host, ocr)) - mmc_power_off(host); - goto out; - } + mmc_send_if_cond(host, host->ocr_avail); - /* - * ...and finally MMC. - */ - err = mmc_send_op_cond(host, 0, &ocr); - if (!err) { - if (mmc_attach_mmc(host, ocr)) - mmc_power_off(host); - goto out; - } + /* + * First we search for SDIO... + */ + err = mmc_send_io_op_cond(host, 0, &ocr); + if (!err) { + if (mmc_attach_sdio(host, ocr)) + mmc_power_off(host); + goto out; + } - mmc_release_host(host); - mmc_power_off(host); - } else { - if (host->bus_ops->detect && !host->bus_dead) - host->bus_ops->detect(host); + /* + * ...then normal SD... + */ + err = mmc_send_app_op_cond(host, 0, &ocr); + if (!err) { + if (mmc_attach_sd(host, ocr)) + mmc_power_off(host); + goto out; + } - mmc_bus_put(host); + /* + * ...and finally MMC. + */ + err = mmc_send_op_cond(host, 0, &ocr); + if (!err) { + if (mmc_attach_mmc(host, ocr)) + mmc_power_off(host); + goto out; } + + mmc_release_host(host); + mmc_power_off(host); + out: if (host->caps & MMC_CAP_NEEDS_POLL) mmc_schedule_delayed_work(&host->detect, HZ); |