+/*
+ * 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;
+}
projects / karo-tx-uboot.git / commitdiff