/* * This file is part of the depthcharge project. * * Copyright (C) 2014 - 2015 The Linux Foundation. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <gpio.h> #include <soc/gpio.h> #include <soc/blsp.h> #include <soc/qup.h> #define IPQ40XX_I2C0_PINGROUP_1 1 #define IPQ40XX_I2C0_PINGROUP_2 (!IPQ40XX_I2C0_PINGROUP_1) #define IPQ40XX_I2C1_PINGROUP_1 1 #if IPQ40XX_I2C0_PINGROUP_1 #define SCL_GPIO 20 #define SDA_GPIO 21 #define GPIO_FUNC_SCL 0x1 #define GPIO_FUNC_SDA 0x1 #elif IPQ40XX_I2C0_PINGROUP_2 #define SCL_GPIO 58 #define SDA_GPIO 59 #define GPIO_FUNC_SCL 0x3 #define GPIO_FUNC_SDA 0x2 #else #warning "TPM: I2C pingroup not specified" #endif #if IPQ40XX_I2C1_PINGROUP_1 #define SCL_GPIO_I2C1 34 #define SDA_GPIO_I2C1 35 #define GPIO_I2C1_FUNC_SCL 0x1 #define GPIO_I2C1_FUNC_SDA 0x1 #endif int blsp_i2c_init_board(blsp_qup_id_t id) { switch (id) { case BLSP_QUP_ID_0: case BLSP_QUP_ID_1: case BLSP_QUP_ID_2: case BLSP_QUP_ID_3: #if defined(IPQ40XX_I2C0_PINGROUP_1) || defined(IPQ40XX_I2C0_PINGROUP_2) gpio_tlmm_config_set(SDA_GPIO, GPIO_FUNC_SDA, GPIO_NO_PULL, GPIO_2MA, 1); gpio_tlmm_config_set(SCL_GPIO, GPIO_FUNC_SCL, GPIO_NO_PULL, GPIO_2MA, 1); #endif /* Pin Group 1 or 2 */ #if defined(IPQ40XX_I2C1_PINGROUP_1) gpio_tlmm_config_set(SDA_GPIO_I2C1, GPIO_I2C1_FUNC_SDA, GPIO_NO_PULL, GPIO_2MA, 1); gpio_tlmm_config_set(SCL_GPIO_I2C1, GPIO_I2C1_FUNC_SCL, GPIO_NO_PULL, GPIO_2MA, 1); #endif break; default: return 1; } return 0; }