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mci: tegra: add reset control 

Enable the driver to reset the device itself.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Lucas Stach 2014-05-14 22:45:32 +02:00 committed by Sascha Hauer
parent ee493a6152
commit 17a72b1f16
1 changed files with 9 additions and 0 deletions
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9
drivers/mci/tegra-sdmmc.c
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@ -28,6 +28,7 @@
#include <mci.h>
#include <of_gpio.h>
#include <linux/clk.h>
#include <linux/reset.h>
#include "sdhci.h"
@ -62,6 +63,7 @@ struct tegra_sdmmc_host {
struct mci_host mci;
void __iomem *regs;
struct clk *clk;
struct reset_control *reset;
int gpio_cd, gpio_pwr;
};
#define to_tegra_sdmmc_host(mci) container_of(mci, struct tegra_sdmmc_host, mci)
@ -400,6 +402,10 @@ static int tegra_sdmmc_probe(struct device_d *dev)
if (IS_ERR(host->clk))
return PTR_ERR(host->clk);
host->reset = reset_control_get(dev, NULL);
if (IS_ERR(host->reset))
return PTR_ERR(host->reset);
host->regs = dev_request_mem_region(dev, 0);
if (!host->regs) {
dev_err(dev, "could not get iomem region\n");
@ -430,6 +436,9 @@ static int tegra_sdmmc_probe(struct device_d *dev)
}
clk_enable(host->clk);
reset_control_assert(host->reset);
udelay(2);
reset_control_deassert(host->reset);
mci->init = tegra_sdmmc_init;
mci->card_present = tegra_sdmmc_card_present;