From e54def4ad8144ab15f826416e2e0f290ef1901b4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 19 Jun 2024 23:00:30 +0200 Subject: Adding upstream version 6.9.2. Signed-off-by: Daniel Baumann --- drivers/ufs/core/ufs-sysfs.c | 49 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) (limited to 'drivers/ufs/core/ufs-sysfs.c') diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c index e6d12289e0..3d049967f6 100644 --- a/drivers/ufs/core/ufs-sysfs.c +++ b/drivers/ufs/core/ufs-sysfs.c @@ -405,6 +405,53 @@ static ssize_t wb_flush_threshold_store(struct device *dev, return count; } +/** + * pm_qos_enable_show - sysfs handler to show pm qos enable value + * @dev: device associated with the UFS controller + * @attr: sysfs attribute handle + * @buf: buffer for sysfs file + * + * Print 1 if PM QoS feature is enabled, 0 if disabled. + * + * Returns number of characters written to @buf. + */ +static ssize_t pm_qos_enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", hba->pm_qos_enabled); +} + +/** + * pm_qos_enable_store - sysfs handler to store value + * @dev: device associated with the UFS controller + * @attr: sysfs attribute handle + * @buf: buffer for sysfs file + * @count: stores buffer characters count + * + * Input 0 to disable PM QoS and 1 value to enable. + * Default state: 1 + * + * Return: number of characters written to @buf on success, < 0 upon failure. + */ +static ssize_t pm_qos_enable_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + bool value; + + if (kstrtobool(buf, &value)) + return -EINVAL; + + if (value) + ufshcd_pm_qos_init(hba); + else + ufshcd_pm_qos_exit(hba); + + return count; +} + static DEVICE_ATTR_RW(rpm_lvl); static DEVICE_ATTR_RO(rpm_target_dev_state); static DEVICE_ATTR_RO(rpm_target_link_state); @@ -416,6 +463,7 @@ static DEVICE_ATTR_RW(wb_on); static DEVICE_ATTR_RW(enable_wb_buf_flush); static DEVICE_ATTR_RW(wb_flush_threshold); static DEVICE_ATTR_RW(rtc_update_ms); +static DEVICE_ATTR_RW(pm_qos_enable); static struct attribute *ufs_sysfs_ufshcd_attrs[] = { &dev_attr_rpm_lvl.attr, @@ -429,6 +477,7 @@ static struct attribute *ufs_sysfs_ufshcd_attrs[] = { &dev_attr_enable_wb_buf_flush.attr, &dev_attr_wb_flush_threshold.attr, &dev_attr_rtc_update_ms.attr, + &dev_attr_pm_qos_enable.attr, NULL }; -- cgit v1.2.3