reef: Print tcpc firmware version

BUG=chrome-os-partner:56866
BRANCH=master
TEST=prints firmware version at boot up;make buildall -j

Change-Id: Idb067186924e6706ccfc69a64f2febd61f396074
Signed-off-by: Divya Sasidharan <divya.s.sasidharan@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/380317
Commit-Ready: Divya S Sasidharan <divya.s.sasidharan@intel.com>
Tested-by: Divya S Sasidharan <divya.s.sasidharan@intel.com>
Reviewed-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>

board/reef/board.c

@@ -238,6 +238,22 @@ void board_reset_pd_mcu(void)
 	gpio_set_level(GPIO_USB_C0_PD_RST_L, 1);
 }
 
+#ifdef CONFIG_USB_PD_TCPC_FW_VERSION
+void board_print_tcpc_fw_version(int port)
+{
+	int rv;
+	int version;
+
+	if (port)
+		rv = ps8751_tcpc_get_fw_version(port, &version);
+	else
+		rv = anx74xx_tcpc_get_fw_version(port, &version);
+
+	if (!rv)
+		CPRINTS("TCPC p%d FW VER: 0x%x", port, version);
+}
+#endif
+
 void board_tcpc_init(void)
 {
 	/* Only reset TCPC if not sysjump */

board/reef/board.h

@@ -80,6 +80,7 @@
 #define CONFIG_USB_PD_PORT_COUNT 2
 #define CONFIG_USB_PD_QUIRK_SLOW_CC_STATUS
 #define CONFIG_USB_PD_VBUS_DETECT_CHARGER
+#define CONFIG_USB_PD_TCPC_FW_VERSION
 #define CONFIG_USB_PD_TCPM_MUX  /* for both PS8751 and ANX3429 */
 #define CONFIG_USB_PD_TCPM_ANX74XX
 #define CONFIG_USB_PD_TCPM_PS8751
@@ -280,6 +281,7 @@ void board_reset_pd_mcu(void);
 int board_get_version(void);
 
 void board_set_tcpc_power_mode(int port, int mode);
+void board_print_tcpc_fw_version(int port);
 
 /* Sensors without hardware FIFO are in forced mode */
 #define CONFIG_ACCEL_FORCE_MODE_MASK \

driver/tcpm/anx74xx.c

@@ -545,6 +545,13 @@ static int anx74xx_tcpm_set_polarity(int port, int polarity)
 	return rv;
 }
 
+#ifdef CONFIG_USB_PD_TCPC_FW_VERSION
+int anx74xx_tcpc_get_fw_version(int port, int *version)
+{
+	return tcpc_read(port, ANX74XX_REG_FW_VERSION, version);
+}
+#endif
+
 static int anx74xx_tcpm_set_vconn(int port, int enable)
 {
 	int reg, rv = EC_SUCCESS;
@@ -852,6 +859,10 @@ int anx74xx_tcpm_init(int port)
 	if (rv)
 		return EC_ERROR_UNKNOWN;
 
+#ifdef CONFIG_USB_PD_TCPC_FW_VERSION
+	board_print_tcpc_fw_version(port);
+#endif
+
 	return EC_SUCCESS;
 }
 

driver/tcpm/anx74xx.h

@@ -160,5 +160,6 @@ extern const struct usb_mux_driver anx74xx_tcpm_usb_mux_driver;
 void anx74xx_tcpc_set_vbus(int port, int enable);
 void anx74xx_tcpc_update_hpd_status(int port, int hpd_lvl, int hpd_irq);
 void anx74xx_tcpc_clear_hpd_status(int port);
+int anx74xx_tcpc_get_fw_version(int port, int *version);
 
 #endif /* __CROS_EC_USB_PD_TCPM_ANX74XX_H */

driver/tcpm/ps8751.c

@@ -60,3 +60,10 @@ void ps8751_tcpc_update_hpd_status(int port, int hpd_lvl, int hpd_irq)
 		dp_set_irq(port, hpd_irq);
 	}
 }
+
+#ifdef CONFIG_USB_PD_TCPC_FW_VERSION
+int ps8751_tcpc_get_fw_version(int port, int *version)
+{
+	return tcpc_read(port, PS8751_REG_VERSION, version);
+}
+#endif

driver/tcpm/ps8751.h

@@ -12,10 +12,12 @@
 #define PS8751_VENDOR_ID	0x1DA0
 #define PS8751_PRODUCT_ID	0x8751
 
+#define PS8751_REG_VERSION      0x90
 #define PS8751_REG_CTRL_1       0xD0
 #define PS8751_REG_CTRL_1_HPD   (1 << 0)
 #define PS8751_REG_CTRL_1_IRQ   (1 << 1)
 
 void ps8751_tcpc_update_hpd_status(int port, int hpd_lvl, int hpd_irq);
+int ps8751_tcpc_get_fw_version(int port, int *version);
 #endif /* __CROS_EC_USB_PD_TCPM_PS8751_H */
 

driver/tcpm/tcpci.c

@@ -36,6 +36,10 @@ static int init_alert_mask(int port)
 	/* Set the alert mask in TCPC */
 	rv = tcpc_write16(port, TCPC_REG_ALERT_MASK, mask);
 
+#ifdef CONFIG_USB_PD_TCPC_FW_VERSION
+	board_print_tcpc_fw_version(port);
+#endif
+
 	return rv;
 }
 

include/config.h

@@ -2038,6 +2038,9 @@
 /* Use TCPC module (type-C port controller) */
 #undef CONFIG_USB_PD_TCPC
 
+/* Get TCPC firmware version */
+#undef CONFIG_USB_PD_TCPC_FW_VERSION
+
 /*
  * Track VBUS level in TCPC module. This will only be needed if we're acting
  * as an external TCPC.