static int asoc_simple_card_sub_parse_of(struct device_node *np, struct asoc_simple_dai *dai, struct device_node **p_node, const char **name, int *args_count) { struct of_phandle_args args; struct clk *clk; u32 val; int ret; /* * Get node via "sound-dai = <&phandle port>" * it will be used as xxx_of_node on soc_bind_dai_link() */ ret = of_parse_phandle_with_args(np, "sound-dai", "#sound-dai-cells", 0, &args); if (ret) return ret; *p_node = args.np; if (args_count) *args_count = args.args_count; /* Get dai->name */ ret = snd_soc_of_get_dai_name(np, name); if (ret < 0) return ret; /* Parse TDM slot */ ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width); if (ret) return ret; /* * Parse dai->sysclk come from "clocks = <&xxx>" * (if system has common clock) * or "system-clock-frequency = <xxx>" * or device's module clock. */ if (of_property_read_bool(np, "clocks")) { clk = of_clk_get(np, 0); if (IS_ERR(clk)) { ret = PTR_ERR(clk); return ret; } dai->sysclk = clk_get_rate(clk); } else if (!of_property_read_u32(np, "system-clock-frequency", &val)) { dai->sysclk = val; } else { clk = of_clk_get(args.np, 0); if (!IS_ERR(clk)) dai->sysclk = clk_get_rate(clk); } return 0; }
static int asoc_simple_card_dai_link_of(struct device_node *node, struct simple_card_data *priv, int idx, bool is_top_level_node) { struct device *dev = simple_priv_to_dev(priv); struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx); struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx); struct asoc_simple_dai *cpu_dai = &dai_props->cpu_dai; struct asoc_simple_dai *codec_dai = &dai_props->codec_dai; struct device_node *cpu = NULL; struct device_node *plat = NULL; struct device_node *codec = NULL; char prop[128]; char *prefix = ""; int ret, single_cpu; /* For single DAI link & old style of DT node */ if (is_top_level_node) prefix = PREFIX; snprintf(prop, sizeof(prop), "%scpu", prefix); cpu = of_get_child_by_name(node, prop); snprintf(prop, sizeof(prop), "%splat", prefix); plat = of_get_child_by_name(node, prop); snprintf(prop, sizeof(prop), "%scodec", prefix); codec = of_get_child_by_name(node, prop); if (!cpu || !codec) { ret = -EINVAL; dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop); goto dai_link_of_err; } ret = asoc_simple_card_parse_daifmt(dev, node, codec, prefix, &dai_link->dai_fmt); if (ret < 0) goto dai_link_of_err; of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs); ret = asoc_simple_card_parse_cpu(cpu, dai_link, DAI, CELL, &single_cpu); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL); if (ret < 0) goto dai_link_of_err; ret = snd_soc_of_parse_tdm_slot(cpu, &cpu_dai->tx_slot_mask, &cpu_dai->rx_slot_mask, &cpu_dai->slots, &cpu_dai->slot_width); if (ret < 0) goto dai_link_of_err; ret = snd_soc_of_parse_tdm_slot(codec, &codec_dai->tx_slot_mask, &codec_dai->rx_slot_mask, &codec_dai->slots, &codec_dai->slot_width); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_clk_cpu(cpu, dai_link, cpu_dai); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_parse_clk_codec(codec, dai_link, codec_dai); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_canonicalize_dailink(dai_link); if (ret < 0) goto dai_link_of_err; ret = asoc_simple_card_set_dailink_name(dev, dai_link, "%s-%s", dai_link->cpu_dai_name, dai_link->codec_dai_name); if (ret < 0) goto dai_link_of_err; dai_link->ops = &asoc_simple_card_ops; dai_link->init = asoc_simple_card_dai_init; dev_dbg(dev, "\tname : %s\n", dai_link->stream_name); dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt); dev_dbg(dev, "\tcpu : %s / %d\n", dai_link->cpu_dai_name, dai_props->cpu_dai.sysclk); dev_dbg(dev, "\tcodec : %s / %d\n", dai_link->codec_dai_name, dai_props->codec_dai.sysclk); asoc_simple_card_canonicalize_cpu(dai_link, single_cpu); dai_link_of_err: of_node_put(cpu); of_node_put(codec); return ret; }