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scsi: ufs: qcom: Implement the freq_to_gear_speed() vop

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Implement the freq_to_gear_speed() vop to map the unipro core clock
frequency to the corresponding maximum supported gear speed.

Signed-off-by: Can Guo <quic_cang@quicinc.com>
Co-developed-by: Ziqi Chen <quic_ziqichen@quicinc.com>
Signed-off-by: Ziqi Chen <quic_ziqichen@quicinc.com>
Link: https://lore.kernel.org/r/20250213080008.2984807-5-quic_ziqichen@quicinc.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Can Guo 2025-02-13 16:00:04 +08:00 committed by Martin K. Petersen
parent d7bead60b0
commit c02fe9e222
1 changed files with 31 additions and 0 deletions
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31
drivers/ufs/host/ufs-qcom.c
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@ -1858,6 +1858,36 @@ static int ufs_qcom_config_esi(struct ufs_hba *hba)
return ret; return ret;
} }
static u32 ufs_qcom_freq_to_gear_speed(struct ufs_hba *hba, unsigned long freq)
{
u32 gear = 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:
dev_err(hba->dev, "%s: Unsupported clock freq : %lu\n", __func__, freq);
break;
}
return gear;
}
/* /*
* struct ufs_hba_qcom_vops - UFS QCOM specific variant operations * struct ufs_hba_qcom_vops - UFS QCOM specific variant operations
* *
@ -1886,6 +1916,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
.op_runtime_config = ufs_qcom_op_runtime_config, .op_runtime_config = ufs_qcom_op_runtime_config,
.get_outstanding_cqs = ufs_qcom_get_outstanding_cqs, .get_outstanding_cqs = ufs_qcom_get_outstanding_cqs,
.config_esi = ufs_qcom_config_esi, .config_esi = ufs_qcom_config_esi,
.freq_to_gear_speed = ufs_qcom_freq_to_gear_speed,
}; };
/** /**