Add a vops to configure VCC voltage VCC voltage level
for platform supporting both ufs2.x and ufs 3.x devices.
Suggested-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
Suggested-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
Suggested-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Nitin Rawat <nitirawa@xxxxxxxxxxxxxx>
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@xxxxxxxxxxxxxx>
---
drivers/scsi/ufs/ufshcd.c | 4 ++++
drivers/scsi/ufs/ufshcd.h | 10 ++++++++++
2 files changed, 14 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 633ca8e..5bfe987 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7763,6 +7763,10 @@ static int ufshcd_add_lus(struct ufs_hba *hba)
goto out;
ufshcd_clear_ua_wluns(hba);
+ if (ufshcd_vops_setup_vcc_regulators(hba))
+ dev_err(hba->dev,
+ "%s: Failed to set the VCC regulator values, continue with 2.7v\n",
+ __func__);
/* Initialize devfreq after UFS device is detected */
if (ufshcd_is_clkscaling_supported(hba)) {
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 0db796a..8f0945d 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -324,6 +324,7 @@ struct ufs_pwr_mode_info {
* @device_reset: called to issue a reset pulse on the UFS device
* @program_key: program or evict an inline encryption key
* @event_notify: called to notify important events
+ * @setup_vcc_regulators : update vcc regulator level
*/
struct ufs_hba_variant_ops {
const char *name;
@@ -360,6 +361,7 @@ struct ufs_hba_variant_ops {
const union ufs_crypto_cfg_entry *cfg, int slot);
void (*event_notify)(struct ufs_hba *hba,
enum ufs_event_type evt, void *data);
+ int (*setup_vcc_regulators)(struct ufs_hba *hba);
};
/* clock gating state */
@@ -1269,6 +1271,14 @@ static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
hba->vops->config_scaling_param(hba, profile, data);
}
+static inline int ufshcd_vops_setup_vcc_regulators(struct ufs_hba *hba)
+{
+ if (hba->vops && hba->vops->setup_vcc_regulators)
+ return hba->vops->setup_vcc_regulators(hba);
+
+ return 0;
+}
+
extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];
/*
--
2.7.4
