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mfd: Add power control platform data to SDHI driver

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This patch adds platform data with a function for power
control to the SDHI driver. The idea is that board specific
code can provide their own functions so power can be enabled
and disabled for the sd-cards.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-11-27 04:31:27 +00:00 committed by Paul Mundt
parent c60f55fa1f
commit be9cd7b6f8
2 changed files with 19 additions and 0 deletions
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11
drivers/mfd/sh_mobile_sdhi.c
View File

@ -24,6 +24,7 @@
#include <linux/mfd/core.h>
#include <linux/mfd/tmio.h>
#include <linux/mfd/sh_mobile_sdhi.h>
struct sh_mobile_sdhi {
struct clk *clk;
@ -50,6 +51,15 @@ static struct mfd_cell sh_mobile_sdhi_cell = {
.resources = sh_mobile_sdhi_resources,
};
static void sh_mobile_sdhi_set_pwr(struct platform_device *tmio, int state)
{
struct platform_device *pdev = to_platform_device(tmio->dev.parent);
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
if (p && p->set_pwr)
p->set_pwr(pdev, state);
}
static int __init sh_mobile_sdhi_probe(struct platform_device *pdev)
{
struct sh_mobile_sdhi *priv;
@ -87,6 +97,7 @@ static int __init sh_mobile_sdhi_probe(struct platform_device *pdev)
/* FIXME: silly const unsigned int hclk */
*(unsigned int *)&priv->mmc_data.hclk = clk_get_rate(priv->clk);
priv->mmc_data.set_pwr = sh_mobile_sdhi_set_pwr;
memcpy(&priv->cell_mmc, &sh_mobile_sdhi_cell, sizeof(priv->cell_mmc));
priv->cell_mmc.driver_data = &priv->mmc_data;

8
include/linux/mfd/sh_mobile_sdhi.h Normal file
View File

@ -0,0 +1,8 @@
#ifndef __SH_MOBILE_SDHI_H__
#define __SH_MOBILE_SDHI_H__
struct sh_mobile_sdhi_info {
void (*set_pwr)(struct platform_device *pdev, int state);
};
#endif /* __SH_MOBILE_SDHI_H__ */