Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e288b5ef authored by Ram Prakash Gupta's avatar Ram Prakash Gupta
Browse files

mmc: sdhci-msm: Add sysfs entry for pm qos & clk gating 



Add sysfs entry for pm qos & clk gating delayed works.

Change-Id: I38b73931d8845ab5aa8ec07d1ae40e321c206058
Signed-off-by: default avatarRam Prakash Gupta <rampraka@codeaurora.org>
parent 1c760983

drivers/mmc/host/sdhci-msm.c

+106 −10
Original line number Diff line number Diff line
@@ -430,6 +430,10 @@ struct sdhci_msm_host { 
	struct workqueue_struct *workq;	/* QoS work queue */

	struct sdhci_msm_qos_req *sdhci_qos;

	struct irq_affinity_notify affinity_notify;

	struct device_attribute clk_gating;

	struct device_attribute pm_qos;

	u32 clk_gating_delay;

	u32 pm_qos_delay;

};



static struct sdhci_msm_host *sdhci_slot[2];
@@ -3417,6 +3421,101 @@ static void sdhci_msm_qos_init(struct sdhci_msm_host *msm_host) 
	msm_host->sdhci_qos = NULL;

}



static ssize_t show_sdhci_msm_clk_gating(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	struct sdhci_host *host = dev_get_drvdata(dev);

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);



	return scnprintf(buf, PAGE_SIZE, "%u\n", msm_host->clk_gating_delay);

}



static ssize_t store_sdhci_msm_clk_gating(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{

	struct sdhci_host *host = dev_get_drvdata(dev);

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);

	uint32_t value;



	if (!kstrtou32(buf, 0, &value)) {

		msm_host->clk_gating_delay = value;

		dev_info(dev, "set clk scaling work delay (%u)\n", value);

	}



	return count;

}



static ssize_t show_sdhci_msm_pm_qos(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	struct sdhci_host *host = dev_get_drvdata(dev);

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);



	return scnprintf(buf, PAGE_SIZE, "%u\n", msm_host->pm_qos_delay);

}



static ssize_t store_sdhci_msm_pm_qos(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{

	struct sdhci_host *host = dev_get_drvdata(dev);

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);

	uint32_t value;



	if (!kstrtou32(buf, 0, &value)) {

		msm_host->pm_qos_delay = value;

		dev_info(dev, "set pm qos work delay (%u)\n", value);

	}



	return count;

}



static void sdhci_msm_init_sysfs_gating_qos(struct device *dev)

{

	struct sdhci_host *host = dev_get_drvdata(dev);

	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);

	int ret;



	msm_host->clk_gating.show = show_sdhci_msm_clk_gating;

	msm_host->clk_gating.store = store_sdhci_msm_clk_gating;

	sysfs_attr_init(&msm_host->clk_gating.attr);

	msm_host->clk_gating.attr.name = "clk_gating";

	msm_host->clk_gating.attr.mode = 0644;

	ret = device_create_file(dev, &msm_host->clk_gating);

	if (ret) {

		pr_err("%s: %s: failed creating clk gating attr: %d\n",

				mmc_hostname(host->mmc), __func__, ret);

	}



	msm_host->pm_qos.show = show_sdhci_msm_pm_qos;

	msm_host->pm_qos.store = store_sdhci_msm_pm_qos;

	sysfs_attr_init(&msm_host->pm_qos.attr);

	msm_host->pm_qos.attr.name = "pm_qos";

	msm_host->pm_qos.attr.mode = 0644;

	ret = device_create_file(dev, &msm_host->pm_qos);

	if (ret) {

		pr_err("%s: %s: failed creating pm qos attr: %d\n",

				mmc_hostname(host->mmc), __func__, ret);

	}

}



static void sdhci_msm_setup_pm(struct platform_device *pdev,

			struct sdhci_msm_host *msm_host)

{

	pm_runtime_get_noresume(&pdev->dev);

	pm_runtime_set_active(&pdev->dev);

	pm_runtime_enable(&pdev->dev);

	if (!(msm_host->mmc->caps & MMC_CAP_SYNC_RUNTIME_PM)) {

		pm_runtime_set_autosuspend_delay(&pdev->dev,

					 MSM_MMC_AUTOSUSPEND_DELAY_MS);

		pm_runtime_use_autosuspend(&pdev->dev);

	}

}



static int sdhci_msm_probe(struct platform_device *pdev)

{

	struct sdhci_host *host;
@@ -3657,14 +3756,7 @@ static int sdhci_msm_probe(struct platform_device *pdev) 
#if defined(CONFIG_SDC_QTI)

	msm_host->mmc->caps2 |= MMC_CAP2_CLK_SCALE;

#endif

	pm_runtime_get_noresume(&pdev->dev);

	pm_runtime_set_active(&pdev->dev);

	pm_runtime_enable(&pdev->dev);

	if (!(msm_host->mmc->caps & MMC_CAP_SYNC_RUNTIME_PM)) {

		pm_runtime_set_autosuspend_delay(&pdev->dev,

					 MSM_MMC_AUTOSUSPEND_DELAY_MS);

		pm_runtime_use_autosuspend(&pdev->dev);

	}

	sdhci_msm_setup_pm(pdev, msm_host);



	host->mmc_host_ops.execute_tuning = sdhci_msm_execute_tuning;
@@ -3672,8 +3764,12 @@ static int sdhci_msm_probe(struct platform_device *pdev) 
	if (!msm_host->workq)

		dev_err(&pdev->dev, "Generic swq creation failed\n");



	msm_host->clk_gating_delay = MSM_CLK_GATING_DELAY_MS;

	msm_host->pm_qos_delay = MSM_PMQOS_UNVOTING_DELAY_MS;

	/* Initialize pmqos */

	sdhci_msm_qos_init(msm_host);

	/* Initialize sysfs entries */

	sdhci_msm_init_sysfs_gating_qos(dev);



	if (of_property_read_bool(node, "supports-cqe"))

		ret = sdhci_msm_cqe_add_host(host, pdev);
@@ -3779,12 +3875,12 @@ static __maybe_unused int sdhci_msm_runtime_suspend(struct device *dev) 
		goto skip_qos;

	queue_delayed_work(msm_host->workq,

			&msm_host->pmqos_unvote_work,

			msecs_to_jiffies(MSM_PMQOS_UNVOTING_DELAY_MS));

			msecs_to_jiffies(msm_host->pm_qos_delay));



skip_qos:

	queue_delayed_work(msm_host->workq,

			&msm_host->clk_gating_work,

			msecs_to_jiffies(MSM_CLK_GATING_DELAY_MS));

			msecs_to_jiffies(msm_host->clk_gating_delay));



	return 0;

}