/**************************************************************************** * boards/arm/lc823450/lc823450-xgevk/src/lc823450_wm8776.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 #include #include #include #include #include "arm_internal.h" #include "lc823450_i2c.h" #include "lc823450_i2s.h" #include "lc823450-xgevk.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ #define WM8776_I2C_PORTNO 0 /* On I2C0 */ #define WM8776_I2C_ADDR 0x1a /**************************************************************************** * Private Data ****************************************************************************/ static struct wm8776_lower_s g_wm8776info = { .address = WM8776_I2C_ADDR, .frequency = 400000, }; /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: lc823450_wm8776initialize ****************************************************************************/ int lc823450_wm8776initialize(int minor) { struct audio_lowerhalf_s *wm8776; struct audio_lowerhalf_s *pcm; struct i2c_master_s *i2c; struct i2s_dev_s *i2s; char devname[12]; int ret; ainfo("Initializing WM8776\n"); /* Initialize I2C */ i2c = lc823450_i2cbus_initialize(WM8776_I2C_PORTNO); if (!i2c) { return -ENODEV; } i2s = lc823450_i2sdev_initialize(); #ifdef CONFIG_AUDIO_I2SCHAR i2schar_register(i2s, 0); #endif wm8776 = wm8776_initialize(i2c, i2s, &g_wm8776info); if (!wm8776) { auderr("ERROR: Failed to initialize the WM8904\n"); return -ENODEV; } pcm = pcm_decode_initialize(wm8776); if (!pcm) { auderr("ERROR: Failed create the PCM decoder\n"); return -ENODEV; } snprintf(devname, 12, "pcm%d", minor); ret = audio_register(devname, pcm); if (ret < 0) { auderr("ERROR: Failed to register /dev/%s device: %d\n", devname, ret); } return 0; }