mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-16 16:23:14 +00:00
209 lines
4.9 KiB
C
209 lines
4.9 KiB
C
|
/*
|
||
|
* Copyright (C) 2012 Samsung Electronics
|
||
|
* R. Chandrasekar <rcsekar@samsung.com>
|
||
|
*
|
||
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
*/
|
||
|
|
||
|
#include <malloc.h>
|
||
|
#include <common.h>
|
||
|
#include <asm/io.h>
|
||
|
#include <libfdt.h>
|
||
|
#include <fdtdec.h>
|
||
|
#include <i2c.h>
|
||
|
#include <i2s.h>
|
||
|
#include <sound.h>
|
||
|
#include <asm/arch/sound.h>
|
||
|
#include "wm8994.h"
|
||
|
#include "max98095.h"
|
||
|
|
||
|
/* defines */
|
||
|
#define SOUND_400_HZ 400
|
||
|
#define SOUND_BITS_IN_BYTE 8
|
||
|
|
||
|
static struct i2stx_info g_i2stx_pri;
|
||
|
|
||
|
/*
|
||
|
* get_sound_i2s_values gets values for i2s parameters
|
||
|
*
|
||
|
* @param i2stx_info i2s transmitter transfer param structure
|
||
|
* @param blob FDT blob if enabled else NULL
|
||
|
*/
|
||
|
static int get_sound_i2s_values(struct i2stx_info *i2s, const void *blob)
|
||
|
{
|
||
|
int node;
|
||
|
int error = 0;
|
||
|
int base;
|
||
|
|
||
|
node = fdt_path_offset(blob, "i2s");
|
||
|
if (node <= 0) {
|
||
|
debug("EXYNOS_SOUND: No node for sound in device tree\n");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Get the pre-defined sound specific values from FDT.
|
||
|
* All of these are expected to be correct otherwise
|
||
|
* wrong register values in i2s setup parameters
|
||
|
* may result in no sound play.
|
||
|
*/
|
||
|
base = fdtdec_get_addr(blob, node, "reg");
|
||
|
if (base == FDT_ADDR_T_NONE) {
|
||
|
debug("%s: Missing i2s base\n", __func__);
|
||
|
return -1;
|
||
|
}
|
||
|
i2s->base_address = base;
|
||
|
|
||
|
i2s->audio_pll_clk = fdtdec_get_int(blob,
|
||
|
node, "samsung,i2s-epll-clock-frequency", -1);
|
||
|
error |= i2s->audio_pll_clk;
|
||
|
debug("audio_pll_clk = %d\n", i2s->audio_pll_clk);
|
||
|
i2s->samplingrate = fdtdec_get_int(blob,
|
||
|
node, "samsung,i2s-sampling-rate", -1);
|
||
|
error |= i2s->samplingrate;
|
||
|
debug("samplingrate = %d\n", i2s->samplingrate);
|
||
|
i2s->bitspersample = fdtdec_get_int(blob,
|
||
|
node, "samsung,i2s-bits-per-sample", -1);
|
||
|
error |= i2s->bitspersample;
|
||
|
debug("bitspersample = %d\n", i2s->bitspersample);
|
||
|
i2s->channels = fdtdec_get_int(blob,
|
||
|
node, "samsung,i2s-channels", -1);
|
||
|
error |= i2s->channels;
|
||
|
debug("channels = %d\n", i2s->channels);
|
||
|
i2s->rfs = fdtdec_get_int(blob,
|
||
|
node, "samsung,i2s-lr-clk-framesize", -1);
|
||
|
error |= i2s->rfs;
|
||
|
debug("rfs = %d\n", i2s->rfs);
|
||
|
i2s->bfs = fdtdec_get_int(blob,
|
||
|
node, "samsung,i2s-bit-clk-framesize", -1);
|
||
|
error |= i2s->bfs;
|
||
|
debug("bfs = %d\n", i2s->bfs);
|
||
|
|
||
|
i2s->id = fdtdec_get_int(blob, node, "samsung,i2s-id", -1);
|
||
|
error |= i2s->id;
|
||
|
debug("id = %d\n", i2s->id);
|
||
|
|
||
|
if (error == -1) {
|
||
|
debug("fail to get sound i2s node properties\n");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Init codec
|
||
|
*
|
||
|
* @param blob FDT blob
|
||
|
* @param pi2s_tx i2s parameters required by codec
|
||
|
* @return int value, 0 for success
|
||
|
*/
|
||
|
static int codec_init(const void *blob, struct i2stx_info *pi2s_tx)
|
||
|
{
|
||
|
int ret;
|
||
|
const char *codectype;
|
||
|
int node;
|
||
|
|
||
|
/* Get the node from FDT for sound */
|
||
|
node = fdt_path_offset(blob, "i2s");
|
||
|
if (node <= 0) {
|
||
|
debug("EXYNOS_SOUND: No node for sound in device tree\n");
|
||
|
debug("node = %d\n", node);
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Get the pre-defined sound codec specific values from FDT.
|
||
|
* All of these are expected to be correct otherwise sound
|
||
|
* can not be played
|
||
|
*/
|
||
|
codectype = fdt_getprop(blob, node, "samsung,codec-type", NULL);
|
||
|
debug("device = %s\n", codectype);
|
||
|
if (!strcmp(codectype, "wm8994")) {
|
||
|
/* Check the codec type and initialise the same */
|
||
|
ret = wm8994_init(blob, pi2s_tx->id + 1,
|
||
|
pi2s_tx->samplingrate,
|
||
|
(pi2s_tx->samplingrate * (pi2s_tx->rfs)),
|
||
|
pi2s_tx->bitspersample, pi2s_tx->channels);
|
||
|
} else if (!strcmp(codectype, "max98095")) {
|
||
|
ret = max98095_init(blob, pi2s_tx->id + 1,
|
||
|
pi2s_tx->samplingrate,
|
||
|
(pi2s_tx->samplingrate * (pi2s_tx->rfs)),
|
||
|
pi2s_tx->bitspersample);
|
||
|
} else {
|
||
|
debug("%s: Unknown codec type %s\n", __func__, codectype);
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
if (ret) {
|
||
|
debug("%s: Codec init failed\n", __func__);
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int sound_init(const void *blob)
|
||
|
{
|
||
|
int ret;
|
||
|
struct i2stx_info *pi2s_tx = &g_i2stx_pri;
|
||
|
|
||
|
/* Get the I2S Values */
|
||
|
if (get_sound_i2s_values(pi2s_tx, blob) < 0) {
|
||
|
debug(" FDT I2S values failed\n");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
if (codec_init(blob, pi2s_tx) < 0) {
|
||
|
debug(" Codec init failed\n");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
ret = i2s_tx_init(pi2s_tx);
|
||
|
if (ret) {
|
||
|
debug("%s: Failed to init i2c transmit: ret=%d\n", __func__,
|
||
|
ret);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
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_create_square_wave((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;
|
||
|
}
|