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Commit fc61c3aa authored by Konstantin Dorfman's avatar Konstantin Dorfman
Browse files

mmc: sdhci: add post halt helper to support command queue hosts 



After halting the CQE, an unexpected legacy irq may be received by the
controller. The post halt helper function acknowledges this irq and
handles it.

Change-Id: Iaaa4e57fba830d626fad693ff33dd966994bc50f
Signed-off-by: default avatarKonstantin Dorfman <kdorfman@codeaurora.org>
parent ae0129cb

drivers/mmc/host/sdhci.c

+14 −0
Original line number Diff line number Diff line
@@ -3468,6 +3468,15 @@ static int sdhci_cmdq_crypto_cfg(struct mmc_host *mmc, 


	return sdhci_crypto_cfg(host, mrq, slot);

}



static void sdhci_cmdq_post_cqe_halt(struct mmc_host *mmc)

{

	struct sdhci_host *host = mmc_priv(mmc);



	sdhci_writel(host, sdhci_readl(host, SDHCI_INT_ENABLE) |

			SDHCI_INT_RESPONSE, SDHCI_INT_ENABLE);

	sdhci_writel(host, SDHCI_INT_RESPONSE, SDHCI_INT_STATUS);

}

#else

static void sdhci_cmdq_clear_set_irqs(struct mmc_host *mmc, bool clear)

{
@@ -3504,6 +3513,10 @@ static int sdhci_cmdq_crypto_cfg(struct mmc_host *mmc, 
{

	return 0;

}



static void sdhci_cmdq_post_cqe_halt(struct mmc_host *mmc)

{

}

#endif



static const struct cmdq_host_ops sdhci_cmdq_ops = {
@@ -3513,6 +3526,7 @@ static const struct cmdq_host_ops sdhci_cmdq_ops = { 
	.set_block_size = sdhci_cmdq_set_block_size,

	.clear_set_dumpregs = sdhci_cmdq_clear_set_dumpregs,

	.crypto_cfg	= sdhci_cmdq_crypto_cfg,

	.post_cqe_halt = sdhci_cmdq_post_cqe_halt,

};



int sdhci_add_host(struct sdhci_host *host)