scsi: ufs: Expose UFS power info to debugfs node

Bug 200368330
JIRA EM-5334

Change-Id: Icdb16f4017906386275c74b667abf4cad8aa54b7
Signed-off-by: Vincent Zhang <xunz@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1606116
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Abhinav Site <asite@nvidia.com>
Reviewed-by: Vipin Kumar <vipink@nvidia.com>
Reviewed-by: Sumeet Gupta <sumeetg@nvidia.com>
Reviewed-by: Naveen Kumar Arepalli <naveenk@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/scsi/ufs/ufs-tegra.c b/drivers/scsi/ufs/ufs-tegra.c
index 3d6b04c99..1bdec74d0 100644
--- a/drivers/scsi/ufs/ufs-tegra.c
+++ b/drivers/scsi/ufs/ufs-tegra.c
@@ -44,6 +44,14 @@ static int ufs_tegra_show_configuration(struct seq_file *s, void *data)
         struct ufs_hba *hba = s->private;
         u32 major_version;
         u32 minor_version;
+        u32 rx_gear;
+        u32 tx_gear;
+        const char *freq_series = "";
+        struct ufs_pa_layer_attr *configured_params;
+
+        configured_params = &hba->pwr_info;
+        rx_gear = configured_params->gear_rx;
+        tx_gear = configured_params->gear_tx;
 
         seq_puts(s, "UFS Configuration:\n");
         if ((hba->ufs_version == UFSHCI_VERSION_10) ||
@@ -68,6 +76,22 @@ static int ufs_tegra_show_configuration(struct seq_file *s, void *data)
         seq_puts(s, "UTP Task Management Request Slots:\n");
         seq_printf(s, "NUTMRS: %u\n", hba->nutmrs);
 
+        seq_puts(s, "\n");
+        seq_puts(s, "UTP Power Info:\n");
+        if (configured_params->hs_rate) {
+                if (configured_params->hs_rate == PA_HS_MODE_A)
+                        freq_series = "RATE_A";
+                else if (configured_params->hs_rate == PA_HS_MODE_B)
+                        freq_series = "RATE_B";
+                seq_printf(s,
+                        "HS Mode RX_Gear:gear_%u TX_Gear:gear_%u %s series\n",
+                                rx_gear, tx_gear, freq_series);
+        } else {
+                seq_printf(s,
+                        "PWM Mode RX_Gear:gear_%u TX_Gear:gear_%u\n",
+                                rx_gear, tx_gear);
+        }
+
         return 0;
 }