diff options
| author | Adrian Hunter <adrian.hunter@nokia.com> | 2010-02-15 21:03:34 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-02-15 21:03:34 +0300 |
| commit | e0eb2424469ec2333885672d3db8bd07d322455d (patch) | |
| tree | 987a225999bbed33b1f456ccdf56fd10ed574019 /drivers/mmc | |
| parent | 6da20c89af64b75302399369a90b9d50c1a87665 (diff) | |
| download | linux-e0eb2424469ec2333885672d3db8bd07d322455d.tar.xz | |
omap_hsmmc: Allow for a shared VccQ
EMMC can have two voltage supplies, Vcc and VccQ
which are implemented in the code as consumer
supplies vmmc and vmmc_aux.
If the regulator that supplies vmmc_aux is shared
with other consumers, then sending it to sleep
will disrupt those consumers. However, the
TWL4030-family regulators may have OFF remapped
to SLEEP, in which case 'regulator_disable()'
will put the regulator to sleep only when all
consumers are disabled - which is the desired
behaviour.
This patch adds a platform data field to allow
that option.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index d2fad587f371..af374771bed0 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -347,7 +347,14 @@ static int omap_hsmmc_23_set_sleep(struct device *dev, int slot, int sleep, err = regulator_set_mode(host->vcc, mode); if (err) return err; - return regulator_set_mode(host->vcc_aux, mode); + + if (!mmc_slot(host).vcc_aux_disable_is_sleep) + return regulator_set_mode(host->vcc_aux, mode); + + if (sleep) + return regulator_disable(host->vcc_aux); + else + return regulator_enable(host->vcc_aux); } static int omap_hsmmc_gpio_init(struct omap_mmc_platform_data *pdata) @@ -1982,6 +1989,13 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) else mmc->ops = &omap_hsmmc_ops; + /* + * If regulator_disable can only put vcc_aux to sleep then there is + * no off state. + */ + if (mmc_slot(host).vcc_aux_disable_is_sleep) + mmc_slot(host).no_off = 1; + mmc->f_min = 400000; mmc->f_max = 52000000; |