diff options
| author |   Adrian Hunter <adrian.hunter@nokia.com> | 2010-02-15 10:03:34 -0800 |
|---|---|---|
| committer |   Tony Lindgren <tony@atomide.com> | 2010-02-15 10:03:34 -0800 |
| commit | e0eb2424469ec2333885672d3db8bd07d322455d (patch) | |
| tree | 987a225999bbed33b1f456ccdf56fd10ed574019 /arch | |
| parent | omap_hsmmc: Ensure regulator enable / disable are paired (diff) | |
| download | linux-dev-e0eb2424469ec2333885672d3db8bd07d322455d.tar.xz linux-dev-e0eb2424469ec2333885672d3db8bd07d322455d.zip | |
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 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/hsmmc.c | 3 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/hsmmc.h | 1 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/mmc.h | 3 |
3 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c index e4ab123cd4d0..9ad229594b46 100644 --- a/arch/arm/mach-omap2/hsmmc.c +++ b/arch/arm/mach-omap2/hsmmc.c @@ -205,6 +205,9 @@ void __init omap2_hsmmc_init(struct omap2_hsmmc_info *controllers) if (c->no_off) mmc->slots[0].no_off = 1; + if (c->vcc_aux_disable_is_sleep) + mmc->slots[0].vcc_aux_disable_is_sleep = 1; + /* NOTE: MMC slots should have a Vcc regulator set up. * This may be from a TWL4030-family chip, another * controllable regulator, or a fixed supply. diff --git a/arch/arm/mach-omap2/hsmmc.h b/arch/arm/mach-omap2/hsmmc.h index 2453a7aeaf6f..36f0ba8d89e2 100644 --- a/arch/arm/mach-omap2/hsmmc.h +++ b/arch/arm/mach-omap2/hsmmc.h @@ -15,6 +15,7 @@ struct omap2_hsmmc_info { bool nonremovable; /* Nonremovable e.g. eMMC */ bool power_saving; /* Try to sleep or power off when possible */ bool no_off; /* power_saving and power is not to go off */ + bool vcc_aux_disable_is_sleep; /* Regulator off remapped to sleep */ int gpio_cd; /* or -EINVAL */ int gpio_wp; /* or -EINVAL */ char *name; /* or NULL for default */ diff --git a/arch/arm/plat-omap/include/plat/mmc.h b/arch/arm/plat-omap/include/plat/mmc.h index b46394955f37..a1bac07c89eb 100644 --- a/arch/arm/plat-omap/include/plat/mmc.h +++ b/arch/arm/plat-omap/include/plat/mmc.h @@ -99,6 +99,9 @@ struct omap_mmc_platform_data { /* If using power_saving and the MMC power is not to go off */ unsigned no_off:1; + /* Regulator off remapped to sleep */ + unsigned vcc_aux_disable_is_sleep:1; + int switch_pin; /* gpio (card detect) */ int gpio_wp; /* gpio (write protect) */ |