From 37e1f5db473e1721810e7b0415e63b759bffb6ac Mon Sep 17 00:00:00 2001 From: Felipe Moura Date: Wed, 28 Aug 2024 11:05:36 -0300 Subject: [PATCH] Add spi slave dev to esp32 xtensa --- .../common/include/esp32_board_spislavedev.h | 74 +++++++++++++++++ boards/xtensa/esp32/common/src/Make.defs | 4 + .../common/src/esp32_board_spislavedev.c | 82 +++++++++++++++++++ .../esp32/esp32-devkitc/src/esp32_bringup.c | 18 +++- 4 files changed, 175 insertions(+), 3 deletions(-) create mode 100644 boards/xtensa/esp32/common/include/esp32_board_spislavedev.h create mode 100644 boards/xtensa/esp32/common/src/esp32_board_spislavedev.c diff --git a/boards/xtensa/esp32/common/include/esp32_board_spislavedev.h b/boards/xtensa/esp32/common/include/esp32_board_spislavedev.h new file mode 100644 index 0000000000..69dd3e998e --- /dev/null +++ b/boards/xtensa/esp32/common/include/esp32_board_spislavedev.h @@ -0,0 +1,74 @@ +/**************************************************************************** + * boards/xtensa/esp32/common/include/esp32_board_spislavedev.h + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +#ifndef __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_ESP32_BOARD_SPISLAVEDEV_H +#define __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_ESP32_BOARD_SPISLAVEDEV_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#ifndef __ASSEMBLY__ + +#undef EXTERN +#if defined(__cplusplus) +#define EXTERN extern "C" +extern "C" +{ +#else +#define EXTERN extern +#endif + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Name: board_spislavedev_initialize + * + * Description: + * Initialize SPI Slave driver and register the /dev/spislv device. + * + * Input Parameters: + * bus - The SPI bus number, used to build the device path as /dev/spislvN + * + * Returned Value: + * Zero (OK) is returned on success; A negated errno value is returned + * to indicate the nature of any failure. + * + ****************************************************************************/ + +#ifdef CONFIG_SPI_SLAVE +int board_spislavedev_initialize(int bus); +#endif + +#undef EXTERN +#if defined(__cplusplus) +} +#endif + +#endif /* __ASSEMBLY__ */ +#endif /* __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_ESP32_BOARD_SPISLAVEDEV_H */ diff --git a/boards/xtensa/esp32/common/src/Make.defs b/boards/xtensa/esp32/common/src/Make.defs index d4e10c7b03..787a199266 100644 --- a/boards/xtensa/esp32/common/src/Make.defs +++ b/boards/xtensa/esp32/common/src/Make.defs @@ -64,6 +64,10 @@ ifeq ($(CONFIG_SPI_DRIVER),y) CSRCS += esp32_board_spidev.c endif +ifeq ($(CONFIG_SPI_SLAVE_DRIVER),y) + CSRCS += esp32_board_spislavedev.c +endif + ifeq ($(CONFIG_ESP32_SPIFLASH),y) CSRCS += esp32_board_spiflash.c endif diff --git a/boards/xtensa/esp32/common/src/esp32_board_spislavedev.c b/boards/xtensa/esp32/common/src/esp32_board_spislavedev.c new file mode 100644 index 0000000000..f602e97b32 --- /dev/null +++ b/boards/xtensa/esp32/common/src/esp32_board_spislavedev.c @@ -0,0 +1,82 @@ +/**************************************************************************** + * boards/xtensa/esp32/common/src/esp32_board_spislavedev.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include +#include + +#include + +#include "esp32_spi.h" + +#include "esp32_board_spislavedev.h" + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: board_spislavedev_initialize + * + * Description: + * Initialize SPI Slave driver and register the /dev/spislv device. + * + * Input Parameters: + * bus - The SPI bus number, used to build the device path as /dev/spislvN + * + * Returned Value: + * Zero (OK) is returned on success; A negated errno value is returned + * to indicate the nature of any failure. + * + ****************************************************************************/ + +int board_spislavedev_initialize(int bus) +{ + int ret; + + struct spi_slave_ctrlr_s *ctrlr; + + spiinfo("Initializing /dev/spislv%d...\n", bus); + + /* Initialize SPI Slave controller device */ + + ctrlr = esp32_spislv_ctrlr_initialize(bus); + if (ctrlr == NULL) + { + spierr("Failed to initialize SPI%d as slave.\n", bus); + return -ENODEV; + } + + ret = spi_slave_register(ctrlr, bus); + if (ret < 0) + { + spierr("Failed to register /dev/spislv%d: %d\n", bus, ret); + + esp32_spislv_ctrlr_uninitialize(ctrlr); + } + + return ret; +} diff --git a/boards/xtensa/esp32/esp32-devkitc/src/esp32_bringup.c b/boards/xtensa/esp32/esp32-devkitc/src/esp32_bringup.c index 3e1ebee0b5..e3891007bf 100644 --- a/boards/xtensa/esp32/esp32-devkitc/src/esp32_bringup.c +++ b/boards/xtensa/esp32/esp32-devkitc/src/esp32_bringup.c @@ -153,6 +153,11 @@ # include "esp32_spi.h" #endif +#ifdef CONFIG_SPI_SLAVE_DRIVER +# include "esp32_spi.h" +# include "esp32_board_spislavedev.h" +#endif + #ifdef CONFIG_LCD_BACKPACK # include "esp32_lcd_backpack.h" #endif @@ -702,15 +707,22 @@ int esp32_bringup(void) } #endif -#ifdef CONFIG_SPI_DRIVER -# ifdef CONFIG_ESP32_SPI2 +#if defined(CONFIG_ESP32_SPI2) && defined(CONFIG_SPI_DRIVER) ret = board_spidev_initialize(ESP32_SPI2); if (ret < 0) { syslog(LOG_ERR, "Failed to initialize SPI%d driver: %d\n", ESP32_SPI2, ret); } -# endif +#endif + +# if defined(CONFIG_ESP32_SPI2) && defined(CONFIG_SPI_SLAVE_DRIVER) + ret = board_spislavedev_initialize(ESP32_SPI2); + if (ret < 0) + { + syslog(LOG_ERR, "Failed to initialize SPI%d Slave driver: %d\n", + ESP32_SPI2, ret); + } #endif #ifdef CONFIG_WS2812