From: Can Guo <quic_cang@xxxxxxxxxxx>
Implement the freq_to_gear_speed() vops to map the unipro core clock
frequency to the corresponding maximum supported gear speed.
Signed-off-by: Can Guo <quic_cang@xxxxxxxxxxx>
Co-developed-by: Ziqi Chen <quic_ziqichen@xxxxxxxxxxx>
Signed-off-by: Ziqi Chen <quic_ziqichen@xxxxxxxxxxx>
---
v1 -> v2:
Print out freq and gear info as debugging message.
---
drivers/ufs/host/ufs-qcom.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index a1eb3cab45e4..77cc1b8019a9 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1804,6 +1804,40 @@ static int ufs_qcom_config_esi(struct ufs_hba *hba)
return ret;
}
+static int ufs_qcom_freq_to_gear_speed(struct ufs_hba *hba, unsigned long freq, u32 *gear)
+{
+ int ret = 0;
+
+ switch (freq) {
+ case 403000000:
+ *gear = UFS_HS_G5;
+ break;
+ case 300000000:
+ *gear = UFS_HS_G4;
+ break;
+ case 201500000:
+ *gear = UFS_HS_G3;
+ break;
+ case 150000000:
+ case 100000000:
+ *gear = UFS_HS_G2;
+ break;
+ case 75000000:
+ case 37500000:
+ *gear = UFS_HS_G1;
+ break;
+ default:
+ ret = -EINVAL;
+ dev_err(hba->dev, "%s: Unsupported clock freq : %lu\n", __func__, freq);
+ break;
+ }
+
+ if (!ret)
+ dev_dbg(hba->dev, "%s: Freq %lu to Gear %u\n", __func__, freq, *gear);
+
+ return ret;
+}
+
/*
* struct ufs_hba_qcom_vops - UFS QCOM specific variant operations
*
@@ -1834,6 +1868,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
.op_runtime_config = ufs_qcom_op_runtime_config,
.get_outstanding_cqs = ufs_qcom_get_outstanding_cqs,
.config_esi = ufs_qcom_config_esi,
+ .freq_to_gear_speed = ufs_qcom_freq_to_gear_speed,
};
/**
--
2.34.1
