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authorDenis Karpov <ext-denis.2.karpov@nokia.com>2009-09-22 16:44:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 07:39:35 -0700
commitdd498effcfa6a196ba097adae3c5aa641115df88 (patch)
treef511fbd298255a97f690f5aaabb714719ef04c88 /arch/arm/mach-omap2
parent23d99bb923fc23aeb1086d60eb1c70602b4e2036 (diff)
downloadop-kernel-dev-dd498effcfa6a196ba097adae3c5aa641115df88.zip
op-kernel-dev-dd498effcfa6a196ba097adae3c5aa641115df88.tar.gz
omap_hsmmc: support for deeper power saving states
Support for multi-level dynamic power saving states in omap_hsmmc (ENABLED->DISABLED->OFF). In the "deepest" state (OFF) we switch off the voltage regulators. Signed-off-by: Denis Karpov <ext-denis.2.karpov@nokia.com> Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Matt Fleming <matt@console-pimps.org> Cc: Ian Molton <ian@mnementh.co.uk> Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com> Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com> Cc: Denis Karpov <ext-denis.2.karpov@nokia.com> Cc: Pierre Ossman <pierre@ossman.eu> Cc: Philip Langdale <philipl@overt.org> Cc: "Madhusudhan" <madhu.cr@ti.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r--arch/arm/mach-omap2/mmc-twl4030.c3
-rw-r--r--arch/arm/mach-omap2/mmc-twl4030.h1
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
index 56f07f2..cb1cbd7 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.c
+++ b/arch/arm/mach-omap2/mmc-twl4030.c
@@ -418,6 +418,9 @@ void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers)
if (c->nonremovable)
mmc->slots[0].nonremovable = 1;
+ if (c->power_saving)
+ mmc->slots[0].power_saving = 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/mmc-twl4030.h b/arch/arm/mach-omap2/mmc-twl4030.h
index 75b0c64..a47e685 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.h
+++ b/arch/arm/mach-omap2/mmc-twl4030.h
@@ -13,6 +13,7 @@ struct twl4030_hsmmc_info {
bool ext_clock; /* use external pin for input clock */
bool cover_only; /* No card detect - just cover switch */
bool nonremovable; /* Nonremovable e.g. eMMC */
+ bool power_saving; /* Try to sleep or power off when possible */
int gpio_cd; /* or -EINVAL */
int gpio_wp; /* or -EINVAL */
char *name; /* or NULL for default */
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