scsi: ufs: Introduce ufshcd_get_pwr_dev_param

ufshcd_get_pwr_dev_param defines an interface for power mode management
currently used by both ufs-qcom and ufs-hisi. Move the interface to ufs
core so every driver can take advantage of it.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Acked-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.h b/drivers/scsi/ufs/ufshcd-pltfrm.h
index 1f29e1fd6d52..0919ebba182b 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.h
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.h
@@ -16,6 +16,27 @@
 
 #include "ufshcd.h"
 
+#define UFS_PWM_MODE 1
+#define UFS_HS_MODE  2
+
+struct ufs_dev_params {
+	u32 pwm_rx_gear;        /* pwm rx gear to work in */
+	u32 pwm_tx_gear;        /* pwm tx gear to work in */
+	u32 hs_rx_gear;         /* hs rx gear to work in */
+	u32 hs_tx_gear;         /* hs tx gear to work in */
+	u32 rx_lanes;           /* number of rx lanes */
+	u32 tx_lanes;           /* number of tx lanes */
+	u32 rx_pwr_pwm;         /* rx pwm working pwr */
+	u32 tx_pwr_pwm;         /* tx pwm working pwr */
+	u32 rx_pwr_hs;          /* rx hs working pwr */
+	u32 tx_pwr_hs;          /* tx hs working pwr */
+	u32 hs_rate;            /* rate A/B to work in HS */
+	u32 desired_working_mode;
+};
+
+int ufshcd_get_pwr_dev_param(struct ufs_dev_params *dev_param,
+			     struct ufs_pa_layer_attr *dev_max,
+			     struct ufs_pa_layer_attr *agreed_pwr);
 int ufshcd_pltfrm_init(struct platform_device *pdev,
 		       const struct ufs_hba_variant_ops *vops);
 void ufshcd_pltfrm_shutdown(struct platform_device *pdev);