From 09ee163d378a57723f722fffe58a62625147b399 Mon Sep 17 00:00:00 2001
From: Marco Casaroli <marco.casaroli@gmail.com>
Date: Tue, 10 Oct 2023 10:57:40 +0000
Subject: [PATCH] feat(esp32s3-eye): I2C

---
 .../xtensa/esp32s3/esp32s3-eye/src/esp32s3-eye.h | 16 ++++++++++++++++
 .../esp32s3/esp32s3-eye/src/esp32s3_bringup.c    | 14 ++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3-eye.h b/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3-eye.h
index c0c4714df0..46fe3522c6 100644
--- a/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3-eye.h
+++ b/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3-eye.h
@@ -85,5 +85,21 @@ int esp32s3_bringup(void);
 int esp32s3_gpio_init(void);
 #endif
 
+/****************************************************************************
+ * Name: board_i2c_init
+ *
+ * Description:
+ *   Configure the I2C driver.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_I2C_DRIVER
+int board_i2c_init(void);
+#endif
+
 #endif /* __ASSEMBLY__ */
 #endif /* __BOARDS_XTENSA_ESP32S3_ESP32S3_EYE_SRC_ESP32S3_EYE_H */
diff --git a/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_bringup.c b/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_bringup.c
index 34af2191bd..d075e5a87c 100644
--- a/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_bringup.c
+++ b/boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_bringup.c
@@ -58,6 +58,10 @@
 #  include "esp32s3_rt_timer.h"
 #endif
 
+#ifdef CONFIG_ESP32S3_I2C
+#  include "esp32s3_i2c.h"
+#endif
+
 #ifdef CONFIG_WATCHDOG
 #  include "esp32s3_board_wdt.h"
 #endif
@@ -139,6 +143,16 @@ int esp32s3_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_I2C_DRIVER
+  /* Configure I2C peripheral interfaces */
+
+  ret = board_i2c_init();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize I2C driver: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_INPUT_BUTTONS
   /* Register the BUTTON driver */