122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/****************************************************************************
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* boards/arm/lc823450/lc823450-xgevk/src/lc823450_wm8776.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <stdio.h>
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#include <nuttx/arch.h>
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#include <nuttx/i2c/i2c_master.h>
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#include <nuttx/audio/i2s.h>
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#include <nuttx/audio/pcm.h>
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#include <nuttx/audio/wm8776.h>
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#include <arch/board/board.h>
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#include "arm_internal.h"
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#include "lc823450_i2c.h"
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#include "lc823450_i2s.h"
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#include "lc823450-xgevk.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define WM8776_I2C_PORTNO 0 /* On I2C0 */
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#define WM8776_I2C_ADDR 0x1a
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct wm8776_lower_s g_wm8776info =
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{
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.address = WM8776_I2C_ADDR,
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.frequency = 400000,
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: lc823450_wm8776initialize
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****************************************************************************/
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int lc823450_wm8776initialize(int minor)
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{
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struct audio_lowerhalf_s *wm8776;
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struct audio_lowerhalf_s *pcm;
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struct i2c_master_s *i2c;
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struct i2s_dev_s *i2s;
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char devname[12];
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int ret;
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ainfo("Initializing WM8776\n");
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/* Initialize I2C */
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i2c = lc823450_i2cbus_initialize(WM8776_I2C_PORTNO);
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if (!i2c)
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{
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return -ENODEV;
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}
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i2s = lc823450_i2sdev_initialize();
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#ifdef CONFIG_AUDIO_I2SCHAR
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i2schar_register(i2s, 0);
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#endif
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wm8776 = wm8776_initialize(i2c, i2s, &g_wm8776info);
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if (!wm8776)
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{
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auderr("ERROR: Failed to initialize the WM8904\n");
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return -ENODEV;
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}
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pcm = pcm_decode_initialize(wm8776);
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if (!pcm)
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{
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auderr("ERROR: Failed create the PCM decoder\n");
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return -ENODEV;
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}
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snprintf(devname, 12, "pcm%d", minor);
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ret = audio_register(devname, pcm);
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if (ret < 0)
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{
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auderr("ERROR: Failed to register /dev/%s device: %d\n", devname, ret);
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}
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return 0;
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}
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