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mmc: host: sdhci-sprd: Add software queue support 

Add software queue support to improve the performance.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Link: https://lore.kernel.org/r/f629b32943aae9e30ffa17acf4af06c270417001.1581478569.git.baolin.wang7@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Baolin Wang 2020-02-12 12:13:00 +08:00 committed by Ulf Hansson
parent 4730831c7d
commit f4498549e1
2 changed files with 29 additions and 0 deletions
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1
drivers/mmc/host/Kconfig
View File

@ -645,6 +645,7 @@ config MMC_SDHCI_SPRD
depends on ARCH_SPRD
depends on MMC_SDHCI_PLTFM
select MMC_SDHCI_IO_ACCESSORS
select MMC_HSQ
help
This selects the SDIO Host Controller in Spreadtrum
SoCs, this driver supports R11(IP version: R11P0).

28
drivers/mmc/host/sdhci-sprd.c
View File

@ -19,6 +19,7 @@
#include <linux/slab.h>
#include "sdhci-pltfm.h"
#include "mmc_hsq.h"
/* SDHCI_ARGUMENT2 register high 16bit */
#define SDHCI_SPRD_ARG2_STUFF GENMASK(31, 16)
@ -379,6 +380,16 @@ static unsigned int sdhci_sprd_get_ro(struct sdhci_host *host)
return 0;
}
static void sdhci_sprd_request_done(struct sdhci_host *host,
struct mmc_request *mrq)
{
/* Validate if the request was from software queue firstly. */
if (mmc_hsq_finalize_request(host->mmc, mrq))
return;
mmc_request_done(host->mmc, mrq);
}
static struct sdhci_ops sdhci_sprd_ops = {
.read_l = sdhci_sprd_readl,
.write_l = sdhci_sprd_writel,
@ -392,6 +403,7 @@ static struct sdhci_ops sdhci_sprd_ops = {
.hw_reset = sdhci_sprd_hw_reset,
.get_max_timeout_count = sdhci_sprd_get_max_timeout_count,
.get_ro = sdhci_sprd_get_ro,
.request_done = sdhci_sprd_request_done,
};
static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)
@ -521,6 +533,7 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
{
struct sdhci_host *host;
struct sdhci_sprd_host *sprd_host;
struct mmc_hsq *hsq;
struct clk *clk;
int ret = 0;
@ -631,6 +644,18 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
sprd_host->flags = host->flags;
hsq = devm_kzalloc(&pdev->dev, sizeof(*hsq), GFP_KERNEL);
if (!hsq) {
ret = -ENOMEM;
goto err_cleanup_host;
}
ret = mmc_hsq_init(hsq, host->mmc);
if (ret)
goto err_cleanup_host;
host->always_defer_done = true;
ret = __sdhci_add_host(host);
if (ret)
goto err_cleanup_host;
@ -689,6 +714,7 @@ static int sdhci_sprd_runtime_suspend(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_sprd_host *sprd_host = TO_SPRD_HOST(host);
mmc_hsq_suspend(host->mmc);
sdhci_runtime_suspend_host(host);
clk_disable_unprepare(sprd_host->clk_sdio);
@ -717,6 +743,8 @@ static int sdhci_sprd_runtime_resume(struct device *dev)
goto clk_disable;
sdhci_runtime_resume_host(host, 1);
mmc_hsq_resume(host->mmc);
return 0;
clk_disable: