static int uni_player_parse_dt(struct platform_device *pdev,
struct uniperif *player)
{
struct uniperif_info *info;
struct device *dev = &pdev->dev;
struct device_node *pnode = pdev->dev.of_node;
const char *mode;
/* Allocate memory for the info structure */
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
if (of_property_read_u32(pnode, "st,version", &player->ver) ||
player->ver == SND_ST_UNIPERIF_VERSION_UNKNOWN) {
dev_err(dev, "Unknown uniperipheral version ");
return -EINVAL;
}
/* Underflow recovery is only supported on later ip revisions */
if (player->ver >= SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
info->underflow_enabled = 1;
if (of_property_read_u32(pnode, "st,uniperiph-id", &info->id)) {
dev_err(dev, "uniperipheral id not defined");
return -EINVAL;
}
/* Read the device mode property */
if (of_property_read_string(pnode, "st,mode", &mode)) {
dev_err(dev, "uniperipheral mode not defined");
return -EINVAL;
}
if (strcasecmp(mode, "hdmi") == 0)
info->type = SND_ST_UNIPERIF_TYPE_HDMI;
else if (strcasecmp(mode, "pcm") == 0)
info->type = SND_ST_UNIPERIF_TYPE_PCM;
else if (strcasecmp(mode, "spdif") == 0)
info->type = SND_ST_UNIPERIF_TYPE_SPDIF;
else if (strcasecmp(mode, "tdm") == 0)
info->type = SND_ST_UNIPERIF_TYPE_TDM;
else
info->type = SND_ST_UNIPERIF_TYPE_NONE;
/* Save the info structure */
player->info = info;
/* Get PCM_CLK_SEL & PCMP_VALID_SEL from audio-glue-ctrl SoC reg */
if (uni_player_parse_dt_audio_glue(pdev, player))
return -EINVAL;
return 0;
}
int uni_player_init(struct platform_device *pdev,
struct uniperif *player)
{
int ret = 0;
player->dev = &pdev->dev;
player->state = UNIPERIF_STATE_STOPPED;
player->dai_ops = &uni_player_dai_ops;
/* Get PCM_CLK_SEL & PCMP_VALID_SEL from audio-glue-ctrl SoC reg */
ret = uni_player_parse_dt_audio_glue(pdev, player);
if (ret < 0) {
dev_err(player->dev, "Failed to parse DeviceTree\n");
return ret;
}
/* Underflow recovery is only supported on later ip revisions */
if (player->ver >= SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
player->underflow_enabled = 1;
if (UNIPERIF_TYPE_IS_TDM(player))
player->hw = &uni_tdm_hw;
else
player->hw = &uni_player_pcm_hw;
/* Get uniperif resource */
player->clk = of_clk_get(pdev->dev.of_node, 0);
if (IS_ERR(player->clk)) {
dev_err(player->dev, "Failed to get clock\n");
ret = PTR_ERR(player->clk);
}
/* Select the frequency synthesizer clock */
if (player->clk_sel) {
ret = regmap_field_write(player->clk_sel, 1);
if (ret) {
dev_err(player->dev,
"%s: Failed to select freq synth clock\n",
__func__);
return ret;
}
}
/* connect to I2S/TDM TX bus */
if (player->valid_sel &&
(player->id == UNIPERIF_PLAYER_I2S_OUT)) {
ret = regmap_field_write(player->valid_sel, player->id);
if (ret) {
dev_err(player->dev,
"%s: unable to connect to tdm bus\n", __func__);
return ret;
}
}
ret = devm_request_irq(&pdev->dev, player->irq,
uni_player_irq_handler, IRQF_SHARED,
dev_name(&pdev->dev), player);
if (ret < 0) {
dev_err(player->dev, "unable to request IRQ %d\n", player->irq);
return ret;
}
mutex_init(&player->ctrl_lock);
/* Ensure that disabled by default */
SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player);
SET_UNIPERIF_CTRL_ROUNDING_OFF(player);
SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player);
SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player);
if (UNIPERIF_TYPE_IS_IEC958(player)) {
/* Set default iec958 status bits */
/* Consumer, PCM, copyright, 2ch, mode 0 */
player->stream_settings.iec958.status[0] = 0x00;
/* Broadcast reception category */
player->stream_settings.iec958.status[1] =
IEC958_AES1_CON_GENERAL;
/* Do not take into account source or channel number */
player->stream_settings.iec958.status[2] =
IEC958_AES2_CON_SOURCE_UNSPEC;
/* Sampling frequency not indicated */
player->stream_settings.iec958.status[3] =
IEC958_AES3_CON_FS_NOTID;
/* Max sample word 24-bit, sample word length not indicated */
player->stream_settings.iec958.status[4] =
IEC958_AES4_CON_MAX_WORDLEN_24 |
IEC958_AES4_CON_WORDLEN_24_20;
player->num_ctrls = ARRAY_SIZE(snd_sti_iec_ctl);
player->snd_ctrls = snd_sti_iec_ctl[0];
} else {
player->num_ctrls = ARRAY_SIZE(snd_sti_pcm_ctl);
player->snd_ctrls = snd_sti_pcm_ctl[0];
}
return 0;
}
