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Merge "scsi: ufs: features cpufreq call in ufs driver"

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qctecmdr 2022-01-27 13:42:33 -08:00 committed by Gerrit - the friendly Code Review server
commit 67b5213668
1 changed files with 27 additions and 13 deletions
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40
drivers/scsi/ufs/ufs-qcom.c
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@ -59,7 +59,6 @@
static char android_boot_dev[ANDROID_BOOT_DEV_MAX];
static DEFINE_PER_CPU(struct freq_qos_request, qos_min_req);
static bool no_defer;
enum {
TSTBUS_UAWM,
@ -4169,6 +4168,28 @@ static void ufs_qcom_register_hooks(void)
ufs_qcom_hook_check_int_errors, NULL);
}
#ifdef CONFIG_ARM_QCOM_CPUFREQ_HW
static int ufs_cpufreq_status(void)
{
struct cpufreq_policy *policy;
policy = cpufreq_cpu_get(0);
if (!policy) {
dev_warn(dev, "cpufreq not probed yet, defer once\n");
return -EPROBE_DEFER;
}
cpufreq_cpu_put(policy);
return 0;
}
#else
static int ufs_cpufreq_status(void)
{
return 0;
}
#endif
/**
* ufs_qcom_probe - probe routine of the driver
@ -4178,10 +4199,9 @@ static void ufs_qcom_register_hooks(void)
*/
static int ufs_qcom_probe(struct platform_device *pdev)
{
int err;
int err = 0;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct cpufreq_policy *policy;
/**
* CPUFreq driver is needed for performance reasons.
@ -4190,16 +4210,10 @@ static int ufs_qcom_probe(struct platform_device *pdev)
* policy later on, cpufreq would be disabled and performance would be
* impacted adversly.
*/
policy = cpufreq_cpu_get(0);
if (!policy && !no_defer) {
no_defer = true;
dev_warn(dev, "cpufreq not probed yet, defer once\n");
return -EPROBE_DEFER;
} else if (policy) {
cpufreq_cpu_put(policy);
} else {
dev_warn(dev, "cpufreq enable may fail\n");
}
err = ufs_cpufreq_status();
if (err)
return err;
/*
* On qcom platforms, bootdevice is the primary storage
* device. This device can either be eMMC or UFS.