1 // SPDX-License-Identifier: GPL-2.0
3 // ASoC Audio Graph Card2 support
5 // Copyright (C) 2020 Renesas Electronics Corp.
6 // Copyright (C) 2020 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
8 // based on ${LINUX}/sound/soc/generic/audio-graph-card.c
10 #include <linux/device.h>
11 #include <linux/gpio.h>
12 #include <linux/gpio/consumer.h>
13 #include <linux/module.h>
15 #include <linux/of_graph.h>
16 #include <linux/platform_device.h>
17 #include <linux/string.h>
18 #include <sound/graph_card.h>
20 /************************************
22 ************************************
37 You can set daifmt at ports/port/endpoint.
38 It uses *latest* format, and *share* master settings.
40 sample0: left_j, bitclock-master, frame-master
41 sample1: i2s, bitclock-master
43 If there was no settings, *Codec* will be
44 bitclock/frame provider as default.
48 "format" property is no longer needed on DT if both CPU/Codec drivers are
49 supporting snd_soc_dai_ops :: .auto_selectable_formats.
51 snd_soc_runtime_get_dai_fmt()
54 linux/sound/soc/sh/rcar/core.c
55 linux/sound/soc/codecs/ak4613.c
56 linux/sound/soc/codecs/pcm3168a.c
57 linux/sound/soc/soc-utils.c
58 linux/sound/soc/generic/test-component.c
60 ************************************
62 ************************************
67 compatible = "audio-graph-card2";
75 cpu_ep: endpoint { remote-endpoint = <&codec_ep>; }; };
79 port { codec_ep: endpoint { remote-endpoint = <&cpu_ep>; }; };
82 ************************************
84 ************************************
86 It has connection part (= X) and list part (= y).
87 links indicates connection part of CPU side (= A).
90 CPU1 --(y) | | <-(X)--(X)-> | | (y)-- Codec1
91 CPU2 --(y) | | | | (y)-- Codec2
95 compatible = "audio-graph-card2";
101 (X) (A) mcpu: port@0 { mcpu0_ep: endpoint { remote-endpoint = <&mcodec0_ep>; }; };
102 (y) port@1 { mcpu1_ep: endpoint { remote-endpoint = <&cpu1_ep>; }; };
103 (y) port@2 { mcpu2_ep: endpoint { remote-endpoint = <&cpu2_ep>; }; };
106 (X) port@0 { mcodec0_ep: endpoint { remote-endpoint = <&mcpu0_ep>; }; };
107 (y) port@1 { mcodec1_ep: endpoint { remote-endpoint = <&codec1_ep>; }; };
108 (y) port@2 { mcodec2_ep: endpoint { remote-endpoint = <&codec2_ep>; }; };
117 port@0 { cpu1_ep: endpoint { remote-endpoint = <&mcpu1_ep>; }; };
118 port@1 { cpu2_ep: endpoint { remote-endpoint = <&mcpu2_ep>; }; };
124 port@0 { codec1_ep: endpoint { remote-endpoint = <&mcodec1_ep>; }; };
125 port@1 { codec2_ep: endpoint { remote-endpoint = <&mcodec2_ep>; }; };
129 ************************************
131 ************************************
135 PCM0 <--> * fe0 be0 * <--> DAI0: Codec Headset
136 PCM1 <--> * fe1 be1 * <--> DAI1: Codec Speakers
137 PCM2 <--> * fe2 be2 * <--> DAI2: MODEM
138 PCM3 <--> * fe3 be3 * <--> DAI3: BT
139 * be4 * <--> DAI4: DMIC
140 * be5 * <--> DAI5: FM
144 compatible = "audio-graph-card2";
147 routing = "xxx Playback", "xxx Playback",
148 "xxx Playback", "xxx Playback",
149 "xxx Playback", "xxx Playback";
151 // indicate all Front-End, Back-End
152 links = <&fe0, &fe1, ...,
158 fe0: port@0 { fe0_ep: endpoint { remote-endpoint = <&pcm0_ep>; }; };
159 fe1: port@1 { fe1_ep: endpoint { remote-endpoint = <&pcm1_ep>; }; };
164 be0: port@0 { be0_ep: endpoint { remote-endpoint = <&dai0_ep>; }; };
165 be1: port@1 { be1_ep: endpoint { remote-endpoint = <&dai1_ep>; }; };
175 port@0 { pcm0_ep: endpoint { remote-endpoint = <&fe0_ep>; }; };
176 port@1 { pcm1_ep: endpoint { remote-endpoint = <&fe1_ep>; }; };
183 port@0 { dai0_ep: endpoint { remote-endpoint = <&be0_ep>; }; };
184 port@1 { dai1_ep: endpoint { remote-endpoint = <&be1_ep>; }; };
189 ************************************
191 ************************************
199 compatible = "audio-graph-card2";
201 routing = "OUT" ,"DAI1 Playback",
202 "DAI0 Capture", "IN";
209 c2c: port@0 { c2cf_ep: endpoint { remote-endpoint = <&codec0_ep>; }; };
210 port@1 { c2cb_ep: endpoint { remote-endpoint = <&codec1_ep>; }; };
219 codec0_ep: endpoint { remote-endpoint = <&c2cf_ep>; }; };
220 port@1 { codec1_ep: endpoint { remote-endpoint = <&c2cb_ep>; }; };
231 GRAPH_MULTI, /* don't use ! Use this only in __graph_get_type() */
234 #define GRAPH_NODENAME_MULTI "multi"
235 #define GRAPH_NODENAME_DPCM "dpcm"
236 #define GRAPH_NODENAME_C2C "codec2codec"
238 #define port_to_endpoint(port) of_get_child_by_name(port, "endpoint")
240 static enum graph_type __graph_get_type(struct device_node *lnk)
242 struct device_node *np, *parent_np;
248 * => lnk: port@0 { ... };
253 np = of_get_parent(lnk);
254 if (of_node_name_eq(np, "ports")) {
255 parent_np = of_get_parent(np);
260 if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) {
265 if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) {
270 if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) {
283 static enum graph_type graph_get_type(struct simple_util_priv *priv,
284 struct device_node *lnk)
286 enum graph_type type = __graph_get_type(lnk);
288 /* GRAPH_MULTI here means GRAPH_NORMAL */
289 if (type == GRAPH_MULTI)
294 struct device *dev = simple_priv_to_dev(priv);
295 const char *str = "Normal";
299 if (graph_util_is_ports0(lnk))
300 str = "DPCM Front-End";
302 str = "DPCM Back-End";
311 dev_dbg(dev, "%pOF (%s)", lnk, str);
317 static int graph_lnk_is_multi(struct device_node *lnk)
319 return __graph_get_type(lnk) == GRAPH_MULTI;
322 static struct device_node *graph_get_next_multi_ep(struct device_node **port)
324 struct device_node *ports = of_get_parent(*port);
325 struct device_node *ep = NULL;
326 struct device_node *rep = NULL;
331 * => lnk: port@0 { ... };
332 * port@1 { ep { ... = rep0 } };
333 * port@2 { ep { ... = rep1 } };
344 *port = of_get_next_child(ports, *port);
347 } while (!of_node_name_eq(*port, "port"));
350 ep = port_to_endpoint(*port);
351 rep = of_graph_get_remote_endpoint(ep);
360 static const struct snd_soc_ops graph_ops = {
361 .startup = simple_util_startup,
362 .shutdown = simple_util_shutdown,
363 .hw_params = simple_util_hw_params,
366 static void graph_parse_convert(struct device_node *ep,
367 struct simple_dai_props *props)
369 struct device_node *port = of_get_parent(ep);
370 struct device_node *ports = of_get_parent(port);
371 struct simple_util_data *adata = &props->adata;
373 if (of_node_name_eq(ports, "ports"))
374 simple_util_parse_convert(ports, NULL, adata);
375 simple_util_parse_convert(port, NULL, adata);
376 simple_util_parse_convert(ep, NULL, adata);
382 static void graph_parse_mclk_fs(struct device_node *ep,
383 struct simple_dai_props *props)
385 struct device_node *port = of_get_parent(ep);
386 struct device_node *ports = of_get_parent(port);
388 if (of_node_name_eq(ports, "ports"))
389 of_property_read_u32(ports, "mclk-fs", &props->mclk_fs);
390 of_property_read_u32(port, "mclk-fs", &props->mclk_fs);
391 of_property_read_u32(ep, "mclk-fs", &props->mclk_fs);
397 static int __graph_parse_node(struct simple_util_priv *priv,
398 enum graph_type gtype,
399 struct device_node *ep,
400 struct link_info *li,
403 struct device *dev = simple_priv_to_dev(priv);
404 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
405 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
406 struct snd_soc_dai_link_component *dlc;
407 struct simple_util_dai *dai;
408 int ret, is_single_links = 0;
411 dlc = snd_soc_link_to_cpu(dai_link, idx);
412 dai = simple_props_to_dai_cpu(dai_props, idx);
414 dlc = snd_soc_link_to_codec(dai_link, idx);
415 dai = simple_props_to_dai_codec(dai_props, idx);
418 graph_parse_mclk_fs(ep, dai_props);
420 ret = graph_util_parse_dai(dev, ep, dlc, &is_single_links);
424 ret = simple_util_parse_tdm(ep, dai);
428 ret = simple_util_parse_tdm_width_map(dev, ep, dai);
432 ret = simple_util_parse_clk(dev, ep, dai, dlc);
439 if (!dai_link->name) {
440 struct snd_soc_dai_link_component *cpus = dlc;
441 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx);
442 char *cpu_multi = "";
443 char *codec_multi = "";
445 if (dai_link->num_cpus > 1)
446 cpu_multi = "_multi";
447 if (dai_link->num_codecs > 1)
448 codec_multi = "_multi";
452 /* run is_cpu only. see audio_graph2_link_normal() */
454 simple_util_set_dailink_name(dev, dai_link, "%s%s-%s%s",
455 cpus->dai_name, cpu_multi,
456 codecs->dai_name, codec_multi);
460 simple_util_set_dailink_name(dev, dai_link, "fe.%pOFP.%s%s",
461 cpus->of_node, cpus->dai_name, cpu_multi);
463 simple_util_set_dailink_name(dev, dai_link, "be.%pOFP.%s%s",
464 codecs->of_node, codecs->dai_name, codec_multi);
467 /* run is_cpu only. see audio_graph2_link_c2c() */
469 simple_util_set_dailink_name(dev, dai_link, "c2c.%s%s-%s%s",
470 cpus->dai_name, cpu_multi,
471 codecs->dai_name, codec_multi);
479 * Check "prefix" from top node
482 if (!is_cpu && gtype == GRAPH_DPCM) {
483 struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx);
484 struct snd_soc_codec_conf *cconf = simple_props_to_codec_conf(dai_props, idx);
485 struct device_node *rport = of_get_parent(ep);
486 struct device_node *rports = of_get_parent(rport);
488 if (of_node_name_eq(rports, "ports"))
489 snd_soc_of_parse_node_prefix(rports, cconf, codecs->of_node, "prefix");
490 snd_soc_of_parse_node_prefix(rport, cconf, codecs->of_node, "prefix");
497 struct snd_soc_dai_link_component *cpus = dlc;
498 struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, idx);
500 simple_util_canonicalize_cpu(cpus, is_single_links);
501 simple_util_canonicalize_platform(platforms, cpus);
507 static int graph_parse_node(struct simple_util_priv *priv,
508 enum graph_type gtype,
509 struct device_node *port,
510 struct link_info *li, int is_cpu)
512 struct device_node *ep;
515 if (graph_lnk_is_multi(port)) {
520 for (idx = 0;; idx++) {
521 ep = graph_get_next_multi_ep(&port);
525 ret = __graph_parse_node(priv, gtype, ep,
532 /* Single CPU / Codec */
533 ep = port_to_endpoint(port);
534 ret = __graph_parse_node(priv, gtype, ep, li, is_cpu, 0);
541 static void graph_parse_daifmt(struct device_node *node,
542 unsigned int *daifmt, unsigned int *bit_frame)
547 * see also above "daifmt" explanation
567 * It can be judged it is provider
568 * if (A) or (B) or (C) has bitclock-master / frame-master flag.
572 *bit_frame |= snd_soc_daifmt_parse_clock_provider_as_bitmap(node, NULL);
574 #define update_daifmt(name) \
575 if (!(*daifmt & SND_SOC_DAIFMT_##name##_MASK) && \
576 (fmt & SND_SOC_DAIFMT_##name##_MASK)) \
577 *daifmt |= fmt & SND_SOC_DAIFMT_##name##_MASK
582 * This function is called by (C) -> (B) -> (A) order.
583 * Set if applicable part was not yet set.
585 fmt = snd_soc_daifmt_parse_format(node, NULL);
586 update_daifmt(FORMAT);
587 update_daifmt(CLOCK);
591 static void graph_link_init(struct simple_util_priv *priv,
592 struct device_node *port,
593 struct link_info *li,
596 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
597 struct device_node *ep;
598 struct device_node *ports;
599 unsigned int daifmt = 0, daiclk = 0;
600 unsigned int bit_frame = 0;
602 if (graph_lnk_is_multi(port)) {
604 ep = graph_get_next_multi_ep(&port);
605 port = of_get_parent(ep);
607 ep = port_to_endpoint(port);
610 ports = of_get_parent(port);
624 graph_parse_daifmt(ep, &daifmt, &bit_frame); /* (C) */
625 graph_parse_daifmt(port, &daifmt, &bit_frame); /* (B) */
626 if (of_node_name_eq(ports, "ports"))
627 graph_parse_daifmt(ports, &daifmt, &bit_frame); /* (A) */
631 * We need to flip clock_provider if it was CPU node,
632 * because it is Codec base.
634 daiclk = snd_soc_daifmt_clock_provider_from_bitmap(bit_frame);
636 daiclk = snd_soc_daifmt_clock_provider_flipped(daiclk);
638 dai_link->dai_fmt = daifmt | daiclk;
639 dai_link->init = simple_util_dai_init;
640 dai_link->ops = &graph_ops;
642 dai_link->ops = priv->ops;
645 int audio_graph2_link_normal(struct simple_util_priv *priv,
646 struct device_node *lnk,
647 struct link_info *li)
649 struct device_node *cpu_port = lnk;
650 struct device_node *cpu_ep = port_to_endpoint(cpu_port);
651 struct device_node *codec_port = of_graph_get_remote_port(cpu_ep);
657 * __graph_parse_node() :: DAI Naming
659 ret = graph_parse_node(priv, GRAPH_NORMAL, codec_port, li, 0);
664 * call CPU, and set DAI Name
666 ret = graph_parse_node(priv, GRAPH_NORMAL, cpu_port, li, 1);
670 graph_link_init(priv, cpu_port, li, 1);
672 of_node_put(codec_port);
677 EXPORT_SYMBOL_GPL(audio_graph2_link_normal);
679 int audio_graph2_link_dpcm(struct simple_util_priv *priv,
680 struct device_node *lnk,
681 struct link_info *li)
683 struct device_node *ep = port_to_endpoint(lnk);
684 struct device_node *rep = of_graph_get_remote_endpoint(ep);
685 struct device_node *rport = of_graph_get_remote_port(ep);
686 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
687 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
688 int is_cpu = graph_util_is_ports0(lnk);
696 * => lnk: port@0 { ep: { ... = rep }; };
707 * rport: port@0 { rep: { ... = ep } };
712 * setup CPU here, Codec is already set as dummy.
714 * simple_util_init_priv()
716 dai_link->dynamic = 1;
717 dai_link->dpcm_merged_format = 1;
719 ret = graph_parse_node(priv, GRAPH_DPCM, rport, li, 1);
731 * => lnk: port@0 { ep: { ... = rep; }; };
738 * rport: port@0 { rep: { ... = ep; }; };
743 * setup Codec here, CPU is already set as dummy.
745 * simple_util_init_priv()
749 dai_link->no_pcm = 1;
750 dai_link->be_hw_params_fixup = simple_util_be_hw_params_fixup;
752 ret = graph_parse_node(priv, GRAPH_DPCM, rport, li, 0);
757 graph_parse_convert(ep, dai_props); /* at node of <dpcm> */
758 graph_parse_convert(rep, dai_props); /* at node of <CPU/Codec> */
760 snd_soc_dai_link_set_capabilities(dai_link);
762 graph_link_init(priv, rport, li, is_cpu);
770 EXPORT_SYMBOL_GPL(audio_graph2_link_dpcm);
772 int audio_graph2_link_c2c(struct simple_util_priv *priv,
773 struct device_node *lnk,
774 struct link_info *li)
776 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
777 struct device_node *port0, *port1, *ports;
778 struct device_node *codec0_port, *codec1_port;
779 struct device_node *ep0, *ep1;
787 * => lnk: port@0 { c2c0_ep: { ... = codec0_ep; }; };
788 * port@1 { c2c1_ep: { ... = codec1_ep; }; };
794 * port@0 { codec0_ep: ... }; };
795 * port@1 { codec1_ep: ... }; };
801 ports = of_get_parent(port0);
802 port1 = of_get_next_child(ports, lnk);
805 * Card2 can use original Codec2Codec settings if DT has.
806 * It will use default settings if no settings on DT.
808 * simple_util_init_for_codec2codec()
810 * Add more settings here if needed
812 of_property_read_u32(ports, "rate", &val);
814 struct device *dev = simple_priv_to_dev(priv);
815 struct snd_soc_pcm_stream *c2c_conf;
817 c2c_conf = devm_kzalloc(dev, sizeof(*c2c_conf), GFP_KERNEL);
821 c2c_conf->formats = SNDRV_PCM_FMTBIT_S32_LE; /* update ME */
822 c2c_conf->rates = SNDRV_PCM_RATE_8000_384000;
824 c2c_conf->rate_max = val;
825 c2c_conf->channels_min =
826 c2c_conf->channels_max = 2; /* update ME */
828 dai_link->c2c_params = c2c_conf;
829 dai_link->num_c2c_params = 1;
832 ep0 = port_to_endpoint(port0);
833 ep1 = port_to_endpoint(port1);
835 codec0_port = of_graph_get_remote_port(ep0);
836 codec1_port = of_graph_get_remote_port(ep1);
841 * __graph_parse_node() :: DAI Naming
843 ret = graph_parse_node(priv, GRAPH_C2C, codec1_port, li, 0);
848 * call CPU, and set DAI Name
850 ret = graph_parse_node(priv, GRAPH_C2C, codec0_port, li, 1);
854 graph_link_init(priv, codec0_port, li, 1);
858 of_node_put(codec0_port);
859 of_node_put(codec1_port);
867 EXPORT_SYMBOL_GPL(audio_graph2_link_c2c);
869 static int graph_link(struct simple_util_priv *priv,
870 struct graph2_custom_hooks *hooks,
871 enum graph_type gtype,
872 struct device_node *lnk,
873 struct link_info *li)
875 struct device *dev = simple_priv_to_dev(priv);
876 GRAPH2_CUSTOM func = NULL;
881 if (hooks && hooks->custom_normal)
882 func = hooks->custom_normal;
884 func = audio_graph2_link_normal;
887 if (hooks && hooks->custom_dpcm)
888 func = hooks->custom_dpcm;
890 func = audio_graph2_link_dpcm;
893 if (hooks && hooks->custom_c2c)
894 func = hooks->custom_c2c;
896 func = audio_graph2_link_c2c;
903 dev_err(dev, "non supported gtype (%d)\n", gtype);
907 ret = func(priv, lnk, li);
916 static int graph_counter(struct device_node *lnk)
923 * => lnk: port@0 { ... };
930 * ignore first lnk part
932 if (graph_lnk_is_multi(lnk))
933 return of_graph_get_endpoint_count(of_get_parent(lnk)) - 1;
941 static int graph_count_normal(struct simple_util_priv *priv,
942 struct device_node *lnk,
943 struct link_info *li)
945 struct device_node *cpu_port = lnk;
946 struct device_node *cpu_ep = port_to_endpoint(cpu_port);
947 struct device_node *codec_port = of_graph_get_remote_port(cpu_ep);
951 * => lnk: port { endpoint { .. }; };
955 * DON'T REMOVE platforms
957 * simple-card.c :: simple_count_noml()
959 li->num[li->link].cpus =
960 li->num[li->link].platforms = graph_counter(cpu_port);
962 li->num[li->link].codecs = graph_counter(codec_port);
965 of_node_put(codec_port);
970 static int graph_count_dpcm(struct simple_util_priv *priv,
971 struct device_node *lnk,
972 struct link_info *li)
974 struct device_node *ep = port_to_endpoint(lnk);
975 struct device_node *rport = of_graph_get_remote_port(ep);
981 * => lnk: port@0 { endpoint { ... }; };
986 * => lnk: port@0 { endpoint { ... }; };
992 if (graph_util_is_ports0(lnk)) {
994 * DON'T REMOVE platforms
996 * simple-card.c :: simple_count_noml()
998 li->num[li->link].cpus = graph_counter(rport); /* FE */
999 li->num[li->link].platforms = graph_counter(rport);
1001 li->num[li->link].codecs = graph_counter(rport); /* BE */
1010 static int graph_count_c2c(struct simple_util_priv *priv,
1011 struct device_node *lnk,
1012 struct link_info *li)
1014 struct device_node *ports = of_get_parent(lnk);
1015 struct device_node *port0 = lnk;
1016 struct device_node *port1 = of_get_next_child(ports, lnk);
1017 struct device_node *ep0 = port_to_endpoint(port0);
1018 struct device_node *ep1 = port_to_endpoint(port1);
1019 struct device_node *codec0 = of_graph_get_remote_port(ep0);
1020 struct device_node *codec1 = of_graph_get_remote_port(ep1);
1027 * => lnk: port@0 { endpoint { ... }; };
1028 * port@1 { endpoint { ... }; };
1033 * DON'T REMOVE platforms
1035 * simple-card.c :: simple_count_noml()
1037 li->num[li->link].cpus =
1038 li->num[li->link].platforms = graph_counter(codec0);
1040 li->num[li->link].codecs = graph_counter(codec1);
1046 of_node_put(codec0);
1047 of_node_put(codec1);
1052 static int graph_count(struct simple_util_priv *priv,
1053 struct graph2_custom_hooks *hooks,
1054 enum graph_type gtype,
1055 struct device_node *lnk,
1056 struct link_info *li)
1058 struct device *dev = simple_priv_to_dev(priv);
1059 GRAPH2_CUSTOM func = NULL;
1062 if (li->link >= SNDRV_MAX_LINKS) {
1063 dev_err(dev, "too many links\n");
1069 func = graph_count_normal;
1072 func = graph_count_dpcm;
1075 func = graph_count_c2c;
1082 dev_err(dev, "non supported gtype (%d)\n", gtype);
1086 ret = func(priv, lnk, li);
1095 static int graph_for_each_link(struct simple_util_priv *priv,
1096 struct graph2_custom_hooks *hooks,
1097 struct link_info *li,
1098 int (*func)(struct simple_util_priv *priv,
1099 struct graph2_custom_hooks *hooks,
1100 enum graph_type gtype,
1101 struct device_node *lnk,
1102 struct link_info *li))
1104 struct of_phandle_iterator it;
1105 struct device *dev = simple_priv_to_dev(priv);
1106 struct device_node *node = dev->of_node;
1107 struct device_node *lnk;
1108 enum graph_type gtype;
1111 /* loop for all listed CPU port */
1112 of_for_each_phandle(&it, rc, node, "links", NULL, 0) {
1115 gtype = graph_get_type(priv, lnk);
1117 ret = func(priv, hooks, gtype, lnk, li);
1125 int audio_graph2_parse_of(struct simple_util_priv *priv, struct device *dev,
1126 struct graph2_custom_hooks *hooks)
1128 struct snd_soc_card *card = simple_priv_to_card(priv);
1129 struct link_info *li;
1132 li = devm_kzalloc(dev, sizeof(*li), GFP_KERNEL);
1136 card->probe = graph_util_card_probe;
1137 card->owner = THIS_MODULE;
1140 if ((hooks) && (hooks)->hook_pre) {
1141 ret = (hooks)->hook_pre(priv);
1146 ret = graph_for_each_link(priv, hooks, li, graph_count);
1152 ret = simple_util_init_priv(priv, li);
1156 priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW);
1157 if (IS_ERR(priv->pa_gpio)) {
1158 ret = PTR_ERR(priv->pa_gpio);
1159 dev_err(dev, "failed to get amplifier gpio: %d\n", ret);
1163 ret = simple_util_parse_widgets(card, NULL);
1167 ret = simple_util_parse_routing(card, NULL);
1171 memset(li, 0, sizeof(*li));
1172 ret = graph_for_each_link(priv, hooks, li, graph_link);
1176 ret = simple_util_parse_card_name(card, NULL);
1180 snd_soc_card_set_drvdata(card, priv);
1182 if ((hooks) && (hooks)->hook_post) {
1183 ret = (hooks)->hook_post(priv);
1188 simple_util_debug_info(priv);
1190 ret = devm_snd_soc_register_card(dev, card);
1192 devm_kfree(dev, li);
1195 dev_err_probe(dev, ret, "parse error\n");
1199 EXPORT_SYMBOL_GPL(audio_graph2_parse_of);
1201 static int graph_probe(struct platform_device *pdev)
1203 struct simple_util_priv *priv;
1204 struct device *dev = &pdev->dev;
1206 /* Allocate the private data and the DAI link array */
1207 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1211 return audio_graph2_parse_of(priv, dev, NULL);
1214 static const struct of_device_id graph_of_match[] = {
1215 { .compatible = "audio-graph-card2", },
1218 MODULE_DEVICE_TABLE(of, graph_of_match);
1220 static struct platform_driver graph_card = {
1222 .name = "asoc-audio-graph-card2",
1223 .pm = &snd_soc_pm_ops,
1224 .of_match_table = graph_of_match,
1226 .probe = graph_probe,
1227 .remove_new = simple_util_remove,
1229 module_platform_driver(graph_card);
1231 MODULE_ALIAS("platform:asoc-audio-graph-card2");
1232 MODULE_LICENSE("GPL v2");
1233 MODULE_DESCRIPTION("ASoC Audio Graph Card2");
1234 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");