+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2012 Samsung Electronics
* R. Chandrasekar <rcsekar@samsung.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
*/
-#include <malloc.h>
#include <common.h>
-#include <asm/io.h>
-#include <i2c.h>
-#include <i2s.h>
#include <sound.h>
-#include "wm8994.h"
-#include <asm/arch/sound.h>
-/* defines */
-#define SOUND_400_HZ 400
-#define SOUND_BITS_IN_BYTE 8
-
-static struct i2stx_info g_i2stx_pri;
-static struct sound_codec_info g_codec_info;
-
-/*
- * get_sound_fdt_values gets fdt values for i2s parameters
- *
- * @param i2stx_info i2s transmitter transfer param structure
- * @param blob FDT blob
- */
-static void get_sound_i2s_values(struct i2stx_info *i2s)
-{
- i2s->base_address = samsung_get_base_i2s();
- i2s->audio_pll_clk = I2S_PLL_CLK;
- i2s->samplingrate = I2S_SAMPLING_RATE;
- i2s->bitspersample = I2S_BITS_PER_SAMPLE;
- i2s->channels = I2S_CHANNELS;
- i2s->rfs = I2S_RFS;
- i2s->bfs = I2S_BFS;
-}
-
-/*
- * Gets fdt values for wm8994 config parameters
- *
- * @param pcodec_info codec information structure
- * @param blob FDT blob
- * @return int value, 0 for success
- */
-static int get_sound_wm8994_values(struct sound_codec_info *pcodec_info)
-{
- int error = 0;
-
- switch (AUDIO_COMPAT) {
- case AUDIO_COMPAT_SPI:
- debug("%s: Support not added for SPI interface\n", __func__);
- return -1;
- break;
- case AUDIO_COMPAT_I2C:
- pcodec_info->i2c_bus = AUDIO_I2C_BUS;
- pcodec_info->i2c_dev_addr = AUDIO_I2C_REG;
- debug("i2c dev addr = %d\n", pcodec_info->i2c_dev_addr);
- break;
- default:
- debug("%s: Unknown compat id %d\n", __func__, AUDIO_COMPAT);
- return -1;
- }
-
- if (error == -1) {
- debug("fail to get wm8994 codec node properties\n");
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Gets fdt values for codec config parameters
- *
- * @param pcodec_info codec information structure
- * @param blob FDT blob
- * @return int value, 0 for success
- */
-static int get_sound_codec_values(struct sound_codec_info *pcodec_info)
-{
- int error = 0;
- const char *codectype;
-
- codectype = AUDIO_CODEC;
-
- if (!strcmp(codectype, "wm8994")) {
- pcodec_info->codec_type = CODEC_WM_8994;
- error = get_sound_wm8994_values(pcodec_info);
- } else {
- error = -1;
- }
-
- if (error == -1) {
- debug("fail to get sound codec node properties\n");
- return -1;
- }
-
- return 0;
-}
-
-int sound_init(void)
+void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
+ uint freq, uint channels)
{
- int ret;
- struct i2stx_info *pi2s_tx = &g_i2stx_pri;
- struct sound_codec_info *pcodec_info = &g_codec_info;
-
- /* Get the I2S Values */
- get_sound_i2s_values(pi2s_tx);
-
- /* Get the codec Values */
- if (get_sound_codec_values(pcodec_info) < 0)
- return -1;
-
- ret = i2s_tx_init(pi2s_tx);
- if (ret) {
- debug("%s: Failed to init i2c transmit: ret=%d\n", __func__,
- ret);
- return ret;
- }
-
- /* Check the codec type and initialise the same */
- if (pcodec_info->codec_type == CODEC_WM_8994) {
- ret = wm8994_init(pcodec_info, WM8994_AIF2,
- pi2s_tx->samplingrate,
- (pi2s_tx->samplingrate * (pi2s_tx->rfs)),
- pi2s_tx->bitspersample, pi2s_tx->channels);
- } else {
- debug("%s: Unknown code type %d\n", __func__,
- pcodec_info->codec_type);
- return -1;
- }
- if (ret) {
- debug("%s: Codec init failed\n", __func__);
- return -1;
- }
-
- return ret;
-}
-
-/*
- * Generates square wave sound data for 1 second
- *
- * @param data data buffer pointer
- * @param size size of the buffer
- * @param freq frequency of the wave
- */
-static void sound_prepare_buffer(unsigned short *data, int size, uint32_t freq)
-{
- const int sample = 48000;
const unsigned short amplitude = 16000; /* between 1 and 32767 */
- const int period = freq ? sample / freq : 0;
+ const int period = freq ? sample_rate / freq : 0;
const int half = period / 2;
assert(freq);
size--;
while (size) {
- int i;
+ int i, j;
+
for (i = 0; size && i < half; i++) {
size -= 2;
- *data++ = amplitude;
- *data++ = amplitude;
+ for (j = 0; j < channels; j++)
+ *data++ = amplitude;
}
for (i = 0; size && i < period - half; i++) {
size -= 2;
- *data++ = -amplitude;
- *data++ = -amplitude;
+ for (j = 0; j < channels; j++)
+ *data++ = -amplitude;
}
}
}
-
-int sound_play(uint32_t msec, uint32_t frequency)
-{
- unsigned int *data;
- unsigned long data_size;
- unsigned int ret = 0;
-
- /*Buffer length computation */
- data_size = g_i2stx_pri.samplingrate * g_i2stx_pri.channels;
- data_size *= (g_i2stx_pri.bitspersample / SOUND_BITS_IN_BYTE);
- data = malloc(data_size);
-
- if (data == NULL) {
- debug("%s: malloc failed\n", __func__);
- return -1;
- }
-
- sound_prepare_buffer((unsigned short *)data,
- data_size / sizeof(unsigned short), frequency);
-
- while (msec >= 1000) {
- ret = i2s_transfer_tx_data(&g_i2stx_pri, data,
- (data_size / sizeof(int)));
- msec -= 1000;
- }
- if (msec) {
- unsigned long size =
- (data_size * msec) / (sizeof(int) * 1000);
-
- ret = i2s_transfer_tx_data(&g_i2stx_pri, data, size);
- }
-
- free(data);
-
- return ret;
-}
projects / oweals / u-boot.git / blobdiff