The patch titled
sdhci: add regulator support
has been added to the -mm tree. Its filename is
sdhci-add-regulator-support.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: sdhci: add regulator support
From: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
This patch adds support for regulator API to sdhci core driver.
Regulators can be used to disable power in suspended state to reduce
dissipated energy.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Acked-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: <linux-mmc@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 26 +++++++++++++++++++++++++-
drivers/mmc/host/sdhci.h | 2 ++
2 files changed, 27 insertions(+), 1 deletion(-)
diff -puN drivers/mmc/host/sdhci.c~sdhci-add-regulator-support drivers/mmc/host/sdhci.c
--- a/drivers/mmc/host/sdhci.c~sdhci-add-regulator-support
+++ a/drivers/mmc/host/sdhci.c
@@ -23,6 +23,7 @@
#include <linux/mutex.h>
#include <linux/scatterlist.h>
#include <linux/jiffies.h>
+#include <linux/regulator/consumer.h>
#include <linux/leds.h>
@@ -1573,7 +1574,10 @@ int sdhci_suspend_host(struct sdhci_host
free_irq(host->irq, host);
- return 0;
+ if (host->vmmc)
+ ret = regulator_disable(host->vmmc);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(sdhci_suspend_host);
@@ -1582,6 +1586,13 @@ int sdhci_resume_host(struct sdhci_host
{
int ret;
+ if (host->vmmc) {
+ int ret = regulator_enable(host->vmmc);
+ if (ret)
+ return ret;
+ }
+
+
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if (host->ops->enable_dma)
host->ops->enable_dma(host);
@@ -1878,6 +1889,14 @@ int sdhci_add_host(struct sdhci_host *ho
if (ret)
return ret;
+ host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
+ if (IS_ERR(host->vmmc)) {
+ printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc));
+ host->vmmc = NULL;
+ } else {
+ regulator_enable(host->vmmc);
+ }
+
sdhci_init(host, 0);
#ifdef CONFIG_MMC_DEBUG
@@ -1955,6 +1974,11 @@ void sdhci_remove_host(struct sdhci_host
flush_work(&host->finish_work);
+ if (host->vmmc) {
+ regulator_disable(host->vmmc);
+ regulator_put(host->vmmc);
+ }
+
kfree(host->adma_desc);
kfree(host->align_buffer);
diff -puN drivers/mmc/host/sdhci.h~sdhci-add-regulator-support drivers/mmc/host/sdhci.h
--- a/drivers/mmc/host/sdhci.h~sdhci-add-regulator-support
+++ a/drivers/mmc/host/sdhci.h
@@ -253,6 +253,8 @@ struct sdhci_host {
const struct sdhci_ops *ops; /* Low level hw interface */
+ struct regulator *vmmc; /* Power regulator */
+
/* Internal data */
struct mmc_host *mmc; /* MMC structure */
u64 dma_mask; /* custom DMA mask */
_
Patches currently in -mm which might be from m.szyprowski@xxxxxxxxxxx are
linux-next.patch
sdhci-s3c-add-support-for-the-non-standard-minimal-clock-value.patch
sdhci-s3c-enable-sdhci_quirk_no_hispd_bit-quirk.patch
sdhci-s3c-add-support-for-new-card-detection-methods.patch
sdhci-add-regulator-support.patch
s3c-fb-change-to-depending-on-config_s3c_fb_dev.patch
s3c-fb-add-default-window-feature.patch
s3c-fb-fix-distortedness-situation-for-the-mode-more-then-24bpp.patch
s3c-fb-only-init-window-colour-key-controls-for-windows-with-blending.patch
s3c-fb-initial-move-to-unifying-the-header-files.patch
s3c-fb-udpate-to-support-s3c2416-s3c2443-style-hardware.patch
s3c-fb-integrate-palette-setup-code-into-main-driver.patch
s3c-fb-fix-various-null-references-on-framebuffer-memory-alloc-failure.patch
s3c-fb-correct-framesel1-bitfield-defines-for-vidintcon0-register.patch
s3c-fb-separate-s5pc100-and-s5pv210-framebuffer-driver-data-structures.patch
s3c-fb-add-device-name-initialization.patch
s3c-fb-add-support-for-display-panning.patch
s3c-fb-add-wait-for-vsync-ioctl.patch
s3c-fb-window-3-of-64xx-does-not-have-an-osd_d-register.patch
s3c-fb-add-shadowcon-shadow-register-locking-support-for-s5pv210.patch
s3c-fb-correct-window-osd-size-and-alpha-register-handling.patch
s3c-fb-protect-window-specific-registers-during-updates.patch
s3c-fb-fix-section-mismatch.patch
s3c-fb-add-support-for-dma-channel-control-on-s5pv210.patch
s3c-fb-automatically-calculate-pixel-clock-when-none-is-given.patch
arm-samsung-remove-pixclock-from-several-boards.patch
--
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