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Merge "ufs: qcom: Create sysfs node "ufs_pm_mode""

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QCTECMDR Service 2024-08-08 22:37:30 -07:00 committed by Gerrit - the friendly Code Review server
commit 25804bc944
2 changed files with 78 additions and 3 deletions
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80
drivers/ufs/host/ufs-qcom.c
View File

@ -87,6 +87,12 @@ enum {
UFS_QCOM_CMD_COMPL,
};
enum {
UFS_QCOM_SYSFS_NONE,
UFS_QCOM_SYSFS_S2R,
UFS_QCOM_SYSFS_DEEPSLEEP,
};
static char android_boot_dev[ANDROID_BOOT_DEV_MAX];
static DEFINE_PER_CPU(struct freq_qos_request, qos_min_req);
@ -5571,6 +5577,59 @@ static ssize_t irq_affinity_support_show(struct device *dev,
static DEVICE_ATTR_RW(irq_affinity_support);
static ssize_t ufs_pm_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret = -1;
struct ufs_hba *hba = dev_get_drvdata(dev);
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
switch (host->ufs_pm_mode) {
case 0:
ret = scnprintf(buf, 6, "NONE\n");
break;
case 1:
ret = scnprintf(buf, 5, "S2R\n");
break;
case 2:
ret = scnprintf(buf, 12, "DEEPSLEEP\n");
break;
default:
break;
}
return ret;
}
static ssize_t ufs_pm_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
char kbuff[12] = {0};
struct ufs_hba *hba = dev_get_drvdata(dev);
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
if (!buf)
return -EINVAL;
strscpy(kbuff, buf, 11);
if (!strncasecmp(kbuff, "NONE", 4))
host->ufs_pm_mode = 0;
else if (!strncasecmp(kbuff, "S2R", 3))
host->ufs_pm_mode = 1;
else if (!strncasecmp(kbuff, "DEEPSLEEP", 9))
host->ufs_pm_mode = 2;
else
dev_err(hba->dev, "Invalid entry for ufs_pm_mode\n");
return count;
}
static DEVICE_ATTR_RW(ufs_pm_mode);
static struct attribute *ufs_qcom_sysfs_attrs[] = {
&dev_attr_err_state.attr,
&dev_attr_power_mode.attr,
@ -5582,6 +5641,7 @@ static struct attribute *ufs_qcom_sysfs_attrs[] = {
&dev_attr_hibern8_count.attr,
&dev_attr_ber_th_exceeded.attr,
&dev_attr_irq_affinity_support.attr,
&dev_attr_ufs_pm_mode.attr,
NULL
};
@ -6052,10 +6112,24 @@ static int ufs_qcom_suspend_prepare(struct device *dev)
* regulators is turned off in DS. For other senerios
* like s2idle, retain the default spm level.
*/
if (pm_suspend_target_state == PM_SUSPEND_MEM)
hba->spm_lvl = UFS_PM_LVL_5;
else
switch (host->ufs_pm_mode) {
case UFS_QCOM_SYSFS_NONE:
if (pm_suspend_target_state == PM_SUSPEND_MEM)
hba->spm_lvl = UFS_PM_LVL_5;
else
hba->spm_lvl = host->spm_lvl_default;
break;
case UFS_QCOM_SYSFS_S2R:
hba->spm_lvl = host->spm_lvl_default;
break;
case UFS_QCOM_SYSFS_DEEPSLEEP:
hba->spm_lvl = UFS_PM_LVL_5;
break;
default:
break;
}
dev_info(dev, "spm level is set to %d\n", hba->spm_lvl);
return ufshcd_suspend_prepare(dev);
}

1
drivers/ufs/host/ufs-qcom.h
View File

@ -592,6 +592,7 @@ struct ufs_qcom_host {
bool bypass_g4_cfgready;
bool is_dt_pm_level_read;
u32 spm_lvl_default;
u32 ufs_pm_mode;
bool is_phy_pwr_on;
/* Protect the usage of is_phy_pwr_on against racing */
struct mutex phy_mutex;