audk2g-addon: add pull down to all McASP pins

Signed-off-by: Ming Wei <a0868762@ti.com>

3 files changed, 63 insertions, 0 deletions

diff --git a/include/evmc66x_pinmux.h b/include/evmc66x_pinmux.h
index 796e95d..4f3d81f 100644
--- a/include/evmc66x_pinmux.h
+++ b/include/evmc66x_pinmux.h
@@ -80,6 +80,18 @@ void pinMuxInit(void);
  */
 int32_t audk2g_pinMuxSetMode(uint16_t padCfgId, Audk2gPadCfgMuxMode muxMode);
 
+/**
+ * \brief  Configures pull up/down of a pad config register
+ *
+ * \param   padCfgId [IN]    Pad config register Id; 0 - 259
+ * \param   pullMode  [IN]    Pad config pull mode
+ *
+ * \return
+ * \n       0  - Pull mode configuration is successful
+ * \n      -1  - Invalid parameter
+ */
+int32_t audk2g_pullSetMode(uint16_t padCfgId, uint16_t pullMode);
+
 #endif /* _EVMC66X_AUDK2G_PINMUX_H_ */
 
 /* Nothing past this point */
diff --git a/src/audk2g.c b/src/audk2g.c
index fc7475c..3a90445 100644
--- a/src/audk2g.c
+++ b/src/audk2g.c
@@ -93,6 +93,8 @@ Audk2g_STATUS audk2g_AudioInit(void)
         for (audk2g_padCfg = 169; audk2g_padCfg <= audk2g_padMax; audk2g_padCfg++)
         {
                 audk2g_pinMuxSetMode(audk2g_padCfg, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+                // set to weak pull down
+                audk2g_pullSetMode(audk2g_padCfg, 0);
         }
 
         /* MCASP0AXR[12:15] - PADCONFIG 188 to 191 */
@@ -100,6 +102,8 @@ Audk2g_STATUS audk2g_AudioInit(void)
         for (audk2g_padCfg = 188; audk2g_padCfg <= audk2g_padMax; audk2g_padCfg++)
         {
                 audk2g_pinMuxSetMode(audk2g_padCfg, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+                // set to weak pull down
+                audk2g_pullSetMode(audk2g_padCfg, 0);
         }
 
 
@@ -109,6 +113,8 @@ Audk2g_STATUS audk2g_AudioInit(void)
         for (audk2g_padCfg = 152; audk2g_padCfg <= audk2g_padMax; audk2g_padCfg++)
         {
                 audk2g_pinMuxSetMode(audk2g_padCfg, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+                // set to weak pull down
+                audk2g_pullSetMode(audk2g_padCfg, 0);
         }
 
         /* MCASP1AHCLKX - PADCONFIG 157 */
@@ -119,10 +125,14 @@ Audk2g_STATUS audk2g_AudioInit(void)
         for (audk2g_padCfg = 159; audk2g_padCfg <= audk2g_padMax; audk2g_padCfg++)
         {
                 audk2g_pinMuxSetMode(audk2g_padCfg, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+                // set to weak pull down
+                audk2g_pullSetMode(audk2g_padCfg, 0);
         }
 
         /* MCASP1AXR9 - PADCONFIG 168 */
         audk2g_pinMuxSetMode(168, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+        // set to weak pull down
+        audk2g_pullSetMode(168, 0);
 
 
         /* Configure McASP2 lines */
@@ -132,13 +142,19 @@ Audk2g_STATUS audk2g_AudioInit(void)
         for (audk2g_padCfg = 140; audk2g_padCfg <= audk2g_padMax; audk2g_padCfg++)
         {
                 audk2g_pinMuxSetMode(audk2g_padCfg, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+                // set to weak pull down
+                audk2g_pullSetMode(audk2g_padCfg, 0);
         }
 
         /* MCASP2FSX - PADCONFIG 149 */
         audk2g_pinMuxSetMode(149, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+        // set to weak pull down
+        audk2g_pullSetMode(149, 0);
 
         /* MCASP2ACLKX - PADCONFIG 151 */
         audk2g_pinMuxSetMode(151, AUDK2G_PADCONFIG_MUX_MODE_QUINARY);
+        // set to weak pull down
+        audk2g_pullSetMode(151, 0);
 
         /* Configure GPIO for McASP_CLK_SEL - GPIO0 132 & PADCONFIG 163 */
         audk2g_pinMuxSetMode(163, AUDK2G_PADCONFIG_MUX_MODE_QUATERNARY);
diff --git a/src/evmc66x_pinmux.c b/src/evmc66x_pinmux.c
index 2c78fc2..8411926 100644
--- a/src/evmc66x_pinmux.c
+++ b/src/evmc66x_pinmux.c
@@ -357,4 +357,39 @@ int32_t audk2g_pinMuxSetMode(uint16_t padCfgId, Audk2gPadCfgMuxMode muxMode)
 
 } //audk2g_pinMuxSetMode
 
+/**
+ * \brief  Configures pull up/down of a pad config register
+ *
+ * \param   padCfgId [IN]    Pad config register Id; 0 - 259
+ * \param   pullMode  [IN]    Pad config pull mode
+ *
+ * \return
+ * \n       0  - Pull mode configuration is successful
+ * \n      -1  - Invalid parameter
+ */
+int32_t audk2g_pullSetMode(uint16_t padCfgId, uint16_t pullMode)
+{
+        volatile Uint32 *padCfgBase;
+
+        if((padCfgId < PADCONFIG_MAX_COUNT) &&
+           (pullMode <= AUDK2G_PADCONFIG_MUX_MODE_SENARY))
+    {
+                /* Unlock the Boot Config */
+        CSL_BootCfgUnlockKicker();
+
+            padCfgBase = &hBootCfg->PADCONFIG0;
+                // set the pull mode (up/down)
+            CSL_FINS(*(padCfgBase + padCfgId), BOOTCFG_PADCONFIG0_PULLTYPESEL, pullMode);
+                // pull mode enabled
+            CSL_FINS(*(padCfgBase + padCfgId), BOOTCFG_PADCONFIG0_PULLUDEN, 0);
+
+            return (0);
+    }
+    else
+    {
+            return (-1);
+        }
+
+} //audk2g_pullSetMode
+
 /* Nothing past this point */