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

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

Change-Id: I38b73931d8845ab5aa8ec07d1ae40e321c206058
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>
This commit is contained in:
Ram Prakash Gupta 2020-08-03 02:10:13 +05:30
commit e288b5efd1
1 changed files with 106 additions and 10 deletions
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116
drivers/mmc/host/sdhci-msm.c
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@ -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 @@ out_vote_err:
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;
}