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Commit c9b5061e authored by Chaotian Jing's avatar Chaotian Jing Committed by Ulf Hansson
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mmc: mediatek: add implement of ops->hw_reset()



add implement of ops->hw_reset() for eMMC

Signed-off-by: default avatarChaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 62b0d27a
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+11 −0
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@
#define SDC_RESP2        0x48
#define SDC_RESP3        0x4c
#define SDC_BLK_NUM      0x50
#define EMMC_IOCON       0x7c
#define SDC_ACMD_RESP    0x80
#define MSDC_DMA_SA      0x90
#define MSDC_DMA_CTRL    0x98
@@ -1209,6 +1210,15 @@ static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
	pm_runtime_put_autosuspend(host->dev);
}

static void msdc_hw_reset(struct mmc_host *mmc)
{
	struct msdc_host *host = mmc_priv(mmc);

	sdr_set_bits(host->base + EMMC_IOCON, 1);
	udelay(10); /* 10us is enough */
	sdr_clr_bits(host->base + EMMC_IOCON, 1);
}

static struct mmc_host_ops mt_msdc_ops = {
	.post_req = msdc_post_req,
	.pre_req = msdc_pre_req,
@@ -1216,6 +1226,7 @@ static struct mmc_host_ops mt_msdc_ops = {
	.set_ios = msdc_ops_set_ios,
	.start_signal_voltage_switch = msdc_ops_switch_volt,
	.card_busy = msdc_card_busy,
	.hw_reset = msdc_hw_reset,
};

static int msdc_drv_probe(struct platform_device *pdev)