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mmc: host: sdhci-sprd: Implement the request_atomic() API
Implement the request_atomic() API for nonremovable cards, that means we can submit next request in the irq hard handler context to reduce latency. Moreover factor out the AUTO CMD23 checking into a separate function to reduce duplicate code. Signed-off-by: Baolin Wang <baolin.wang7@gmail.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/60142fe6c6c1dbba2696e775564ae2166786f0bc.1586744073.git.baolin.wang7@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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parent
48ef8a2a1e
commit
61ab64e2f5
1 changed files with 20 additions and 3 deletions
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@ -406,7 +406,8 @@ static struct sdhci_ops sdhci_sprd_ops = {
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.request_done = sdhci_sprd_request_done,
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.request_done = sdhci_sprd_request_done,
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};
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};
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static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)
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static void sdhci_sprd_check_auto_cmd23(struct mmc_host *mmc,
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struct mmc_request *mrq)
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{
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{
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struct sdhci_host *host = mmc_priv(mmc);
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struct sdhci_host *host = mmc_priv(mmc);
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struct sdhci_sprd_host *sprd_host = TO_SPRD_HOST(host);
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struct sdhci_sprd_host *sprd_host = TO_SPRD_HOST(host);
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@ -422,10 +423,23 @@ static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)
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mrq->sbc && (mrq->sbc->arg & SDHCI_SPRD_ARG2_STUFF) &&
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mrq->sbc && (mrq->sbc->arg & SDHCI_SPRD_ARG2_STUFF) &&
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(host->flags & SDHCI_AUTO_CMD23))
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(host->flags & SDHCI_AUTO_CMD23))
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host->flags &= ~SDHCI_AUTO_CMD23;
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host->flags &= ~SDHCI_AUTO_CMD23;
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}
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static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)
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{
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sdhci_sprd_check_auto_cmd23(mmc, mrq);
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sdhci_request(mmc, mrq);
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sdhci_request(mmc, mrq);
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}
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}
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static int sdhci_sprd_request_atomic(struct mmc_host *mmc,
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struct mmc_request *mrq)
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{
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sdhci_sprd_check_auto_cmd23(mmc, mrq);
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return sdhci_request_atomic(mmc, mrq);
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}
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static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios)
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static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios)
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{
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{
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struct sdhci_host *host = mmc_priv(mmc);
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struct sdhci_host *host = mmc_priv(mmc);
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@ -562,6 +576,11 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
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if (ret)
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if (ret)
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goto pltfm_free;
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goto pltfm_free;
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if (!mmc_card_is_removable(host->mmc))
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host->mmc_host_ops.request_atomic = sdhci_sprd_request_atomic;
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else
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host->always_defer_done = true;
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sprd_host = TO_SPRD_HOST(host);
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sprd_host = TO_SPRD_HOST(host);
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sdhci_sprd_phy_param_parse(sprd_host, pdev->dev.of_node);
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sdhci_sprd_phy_param_parse(sprd_host, pdev->dev.of_node);
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@ -655,8 +674,6 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
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if (ret)
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if (ret)
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goto err_cleanup_host;
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goto err_cleanup_host;
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host->always_defer_done = true;
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ret = __sdhci_add_host(host);
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ret = __sdhci_add_host(host);
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if (ret)
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if (ret)
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goto err_cleanup_host;
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goto err_cleanup_host;
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