diff options
Diffstat (limited to 'sound/soc/generic/audio-graph-card2.c')
| -rw-r--r-- | sound/soc/generic/audio-graph-card2.c | 1418 |
1 files changed, 1418 insertions, 0 deletions
diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audio-graph-card2.c new file mode 100644 index 000000000000..62606e20be9a --- /dev/null +++ b/sound/soc/generic/audio-graph-card2.c @@ -0,0 +1,1418 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// ASoC Audio Graph Card2 support +// +// Copyright (C) 2020 Renesas Electronics Corp. +// Copyright (C) 2020 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> +// +// based on ${LINUX}/sound/soc/generic/audio-graph-card.c +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_graph.h> +#include <linux/platform_device.h> +#include <linux/string.h> +#include <sound/graph_card.h> + +/************************************ + daifmt + ************************************ + ports { + format = "left_j"; + port@0 { + bitclock-master; + sample0: endpoint@0 { + frame-master; + }; + sample1: endpoint@1 { + format = "i2s"; + }; + }; + ... + }; + + You can set daifmt at ports/port/endpoint. + It uses *latest* format, and *share* master settings. + In above case, + sample0: left_j, bitclock-master, frame-master + sample1: i2s, bitclock-master + + If there was no settings, *Codec* will be + bitclock/frame provider as default. + see + graph_parse_daifmt(). + + "format" property is no longer needed on DT if both CPU/Codec drivers are + supporting snd_soc_dai_ops :: .auto_selectable_formats. + see + snd_soc_runtime_get_dai_fmt() + + sample driver + linux/sound/soc/sh/rcar/core.c + linux/sound/soc/codecs/ak4613.c + linux/sound/soc/codecs/pcm3168a.c + linux/sound/soc/soc-utils.c + linux/sound/soc/generic/test-component.c + + ************************************ + Normal Audio-Graph + ************************************ + + CPU <---> Codec + + sound { + compatible = "audio-graph-card2"; + links = <&cpu>; + }; + + CPU { + cpu: port { + bitclock-master; + frame-master; + cpu_ep: endpoint { remote-endpoint = <&codec_ep>; }; }; + }; + + Codec { + port { codec_ep: endpoint { remote-endpoint = <&cpu_ep>; }; }; + }; + + ************************************ + Multi-CPU/Codec + ************************************ + +It has link connection part (= X,x) and list part (= A,B,a,b). +"links" is connection part of CPU side (= @). + + +----+ +---+ + CPU1 --|A X| <-@----> |x a|-- Codec1 + CPU2 --|B | | b|-- Codec2 + +----+ +---+ + + sound { + compatible = "audio-graph-card2"; + +(@) links = <&mcpu>; + + multi { + ports@0 { +(@) mcpu: port@0 { mcpu0_ep: endpoint { remote-endpoint = <&mcodec0_ep>; }; }; // (X) to pair + port@1 { mcpu1_ep: endpoint { remote-endpoint = <&cpu1_ep>; }; }; // (A) Multi Element + port@2 { mcpu2_ep: endpoint { remote-endpoint = <&cpu2_ep>; }; }; // (B) Multi Element + }; + ports@1 { + port@0 { mcodec0_ep: endpoint { remote-endpoint = <&mcpu0_ep>; }; }; // (x) to pair + port@1 { mcodec1_ep: endpoint { remote-endpoint = <&codec1_ep>; }; }; // (a) Multi Element + port@2 { mcodec2_ep: endpoint { remote-endpoint = <&codec2_ep>; }; }; // (b) Multi Element + }; + }; + }; + + CPU { + ports { + bitclock-master; + frame-master; + port@0 { cpu1_ep: endpoint { remote-endpoint = <&mcpu1_ep>; }; }; + port@1 { cpu2_ep: endpoint { remote-endpoint = <&mcpu2_ep>; }; }; + }; + }; + + Codec { + ports { + port@0 { codec1_ep: endpoint { remote-endpoint = <&mcodec1_ep>; }; }; + port@1 { codec2_ep: endpoint { remote-endpoint = <&mcodec2_ep>; }; }; + }; + }; + + ************************************ + DPCM + ************************************ + + DSP + ************ + PCM0 <--> * fe0 be0 * <--> DAI0: Codec Headset + PCM1 <--> * fe1 be1 * <--> DAI1: Codec Speakers + PCM2 <--> * fe2 be2 * <--> DAI2: MODEM + PCM3 <--> * fe3 be3 * <--> DAI3: BT + * be4 * <--> DAI4: DMIC + * be5 * <--> DAI5: FM + ************ + + sound { + compatible = "audio-graph-card2"; + + // indicate routing + routing = "xxx Playback", "xxx Playback", + "xxx Playback", "xxx Playback", + "xxx Playback", "xxx Playback"; + + // indicate all Front-End, Back-End + links = <&fe0, &fe1, ..., + &be0, &be1, ...>; + + dpcm { + // Front-End + ports@0 { + fe0: port@0 { fe0_ep: endpoint { remote-endpoint = <&pcm0_ep>; }; }; + fe1: port@1 { fe1_ep: endpoint { remote-endpoint = <&pcm1_ep>; }; }; + ... + }; + // Back-End + ports@1 { + be0: port@0 { be0_ep: endpoint { remote-endpoint = <&dai0_ep>; }; }; + be1: port@1 { be1_ep: endpoint { remote-endpoint = <&dai1_ep>; }; }; + ... + }; + }; + }; + + CPU { + ports { + bitclock-master; + frame-master; + port@0 { pcm0_ep: endpoint { remote-endpoint = <&fe0_ep>; }; }; + port@1 { pcm1_ep: endpoint { remote-endpoint = <&fe1_ep>; }; }; + ... + }; + }; + + Codec { + ports { + port@0 { dai0_ep: endpoint { remote-endpoint = <&be0_ep>; }; }; + port@1 { dai1_ep: endpoint { remote-endpoint = <&be1_ep>; }; }; + ... + }; + }; + + ************************************ + Codec to Codec + ************************************ + + +--+ + | |<-- Codec0 <- IN + | |--> Codec1 -> OUT + +--+ + + sound { + compatible = "audio-graph-card2"; + + routing = "OUT" ,"DAI1 Playback", + "DAI0 Capture", "IN"; + + links = <&c2c>; + + codec2codec { + ports { + rate = <48000>; + c2c: port@0 { c2cf_ep: endpoint { remote-endpoint = <&codec0_ep>; }; }; + port@1 { c2cb_ep: endpoint { remote-endpoint = <&codec1_ep>; }; }; + }; + }; + + Codec { + ports { + port@0 { + bitclock-master; + frame-master; + codec0_ep: endpoint { remote-endpoint = <&c2cf_ep>; }; }; + port@1 { codec1_ep: endpoint { remote-endpoint = <&c2cb_ep>; }; }; + }; + }; + +*/ + +enum graph_type { + GRAPH_NORMAL, + GRAPH_DPCM, + GRAPH_C2C, + + GRAPH_MULTI, /* don't use ! Use this only in __graph_get_type() */ +}; + +#define GRAPH_NODENAME_MULTI "multi" +#define GRAPH_NODENAME_DPCM "dpcm" +#define GRAPH_NODENAME_C2C "codec2codec" + +#define port_to_endpoint(port) of_get_child_by_name(port, "endpoint") + +static enum graph_type __graph_get_type(struct device_node *lnk) +{ + struct device_node *np, *parent_np; + enum graph_type ret; + + /* + * target { + * ports { + * => lnk: port@0 { ... }; + * port@1 { ... }; + * }; + * }; + */ + np = of_get_parent(lnk); + if (of_node_name_eq(np, "ports")) { + parent_np = of_get_parent(np); + of_node_put(np); + np = parent_np; + } + + if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) { + ret = GRAPH_MULTI; + goto out_put; + } + + if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) { + ret = GRAPH_DPCM; + goto out_put; + } + + if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) { + ret = GRAPH_C2C; + goto out_put; + } + + ret = GRAPH_NORMAL; + +out_put: + of_node_put(np); + return ret; + +} + +static enum graph_type graph_get_type(struct simple_util_priv *priv, + struct device_node *lnk) +{ + enum graph_type type = __graph_get_type(lnk); + + /* GRAPH_MULTI here means GRAPH_NORMAL */ + if (type == GRAPH_MULTI) + type = GRAPH_NORMAL; + +#ifdef DEBUG + { + struct device *dev = simple_priv_to_dev(priv); + const char *str = "Normal"; + + switch (type) { + case GRAPH_DPCM: + if (graph_util_is_ports0(lnk)) + str = "DPCM Front-End"; + else + str = "DPCM Back-End"; + break; + case GRAPH_C2C: + str = "Codec2Codec"; + break; + default: + break; + } + + dev_dbg(dev, "%pOF (%s)", lnk, str); + } +#endif + return type; +} + +static int graph_lnk_is_multi(struct device_node *lnk) +{ + return __graph_get_type(lnk) == GRAPH_MULTI; +} + +static struct device_node *graph_get_next_multi_ep(struct device_node **port) +{ + struct device_node *ports = of_get_parent(*port); + struct device_node *ep = NULL; + struct device_node *rep = NULL; + + /* + * multi { + * ports { + * => lnk: port@0 { ... }; // to pair + * port@1 { ep { ... = rep0 } }; // Multi Element + * port@2 { ep { ... = rep1 } }; // Multi Element + * ... + * }; + * }; + * + * xxx { + * port@0 { rep0 }; + * port@1 { rep1 }; + * }; + */ + do { + *port = of_get_next_child(ports, *port); + if (!*port) + break; + } while (!of_node_name_eq(*port, "port")); + + if (*port) { + ep = port_to_endpoint(*port); + rep = of_graph_get_remote_endpoint(ep); + } + + of_node_put(ep); + of_node_put(ports); + + return rep; +} + +static const struct snd_soc_ops graph_ops = { + .startup = simple_util_startup, + .shutdown = simple_util_shutdown, + .hw_params = simple_util_hw_params, +}; + +static void graph_parse_convert(struct device_node *ep, + struct simple_dai_props *props) +{ + struct device_node *port = of_get_parent(ep); + struct device_node *ports = of_get_parent(port); + struct simple_util_data *adata = &props->adata; + + if (of_node_name_eq(ports, "ports")) + simple_util_parse_convert(ports, NULL, adata); + simple_util_parse_convert(port, NULL, adata); + simple_util_parse_convert(ep, NULL, adata); + + of_node_put(port); + of_node_put(ports); +} + +static void graph_parse_mclk_fs(struct device_node *ep, + struct simple_dai_props *props) +{ + struct device_node *port = of_get_parent(ep); + struct device_node *ports = of_get_parent(port); + + if (of_node_name_eq(ports, "ports")) + of_property_read_u32(ports, "mclk-fs", &props->mclk_fs); + of_property_read_u32(port, "mclk-fs", &props->mclk_fs); + of_property_read_u32(ep, "mclk-fs", &props->mclk_fs); + + of_node_put(port); + of_node_put(ports); +} + +static int __graph_parse_node(struct simple_util_priv *priv, + enum graph_type gtype, + struct device_node *ep, + struct link_info *li, + int is_cpu, int idx) +{ + struct device *dev = simple_priv_to_dev(priv); + struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); + struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); + struct snd_soc_dai_link_component *dlc; + struct simple_util_dai *dai; + int ret, is_single_links = 0; + + if (is_cpu) { + dlc = snd_soc_link_to_cpu(dai_link, idx); + dai = simple_props_to_dai_cpu(dai_props, idx); + } else { + dlc = snd_soc_link_to_codec(dai_link, idx); + dai = simple_props_to_dai_codec(dai_props, idx); + } + + graph_parse_mclk_fs(ep, dai_props); + + ret = graph_util_parse_dai(dev, ep, dlc, &is_single_links); + if (ret < 0) + return ret; + + ret = simple_util_parse_tdm(ep, dai); + if (ret < 0) + return ret; + + ret = simple_util_parse_tdm_width_map(dev, ep, dai); + if (ret < 0) + return ret; + + ret = simple_util_parse_clk(dev, ep, dai, dlc); + if (ret < 0) + return ret; + + /* + * set DAI Name + */ + if (!dai_link->name) { + struct snd_soc_dai_link_component *cpus = dlc; + struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx); + char *cpu_multi = ""; + char *codec_multi = ""; + + if (dai_link->num_cpus > 1) + cpu_multi = "_multi"; + if (dai_link->num_codecs > 1) + codec_multi = "_multi"; + + switch (gtype) { + case GRAPH_NORMAL: + /* run is_cpu only. see audio_graph2_link_normal() */ + if (is_cpu) + simple_util_set_dailink_name(dev, dai_link, "%s%s-%s%s", + cpus->dai_name, cpu_multi, + codecs->dai_name, codec_multi); + break; + case GRAPH_DPCM: + if (is_cpu) + simple_util_set_dailink_name(dev, dai_link, "fe.%pOFP.%s%s", + cpus->of_node, cpus->dai_name, cpu_multi); + else + simple_util_set_dailink_name(dev, dai_link, "be.%pOFP.%s%s", + codecs->of_node, codecs->dai_name, codec_multi); + break; + case GRAPH_C2C: + /* run is_cpu only. see audio_graph2_link_c2c() */ + if (is_cpu) + simple_util_set_dailink_name(dev, dai_link, "c2c.%s%s-%s%s", + cpus->dai_name, cpu_multi, + codecs->dai_name, codec_multi); + break; + default: + break; + } + } + + /* + * Check "prefix" from top node + * if DPCM-BE case + */ + if (!is_cpu && gtype == GRAPH_DPCM) { + struct snd_soc_dai_link_component *codecs = snd_soc_link_to_codec(dai_link, idx); + struct snd_soc_codec_conf *cconf = simple_props_to_codec_conf(dai_props, idx); + struct device_node *rport = of_get_parent(ep); + struct device_node *rports = of_get_parent(rport); + + if (of_node_name_eq(rports, "ports")) + snd_soc_of_parse_node_prefix(rports, cconf, codecs->of_node, "prefix"); + snd_soc_of_parse_node_prefix(rport, cconf, codecs->of_node, "prefix"); + + of_node_put(rport); + of_node_put(rports); + } + + if (is_cpu) { + struct snd_soc_dai_link_component *cpus = dlc; + struct snd_soc_dai_link_component *platforms = snd_soc_link_to_platform(dai_link, idx); + + simple_util_canonicalize_cpu(cpus, is_single_links); + simple_util_canonicalize_platform(platforms, cpus); + } + + return 0; +} + +static int graph_parse_node_multi_nm(struct snd_soc_dai_link *dai_link, + int *nm_idx, int cpu_idx, + struct device_node *mcpu_port) +{ + /* + * +---+ +---+ + * | X|<-@------->|x | + * | | | | + * cpu0 <--|A 1|<--------->|4 a|-> codec0 + * cpu1 <--|B 2|<-----+--->|5 b|-> codec1 + * cpu2 <--|C 3|<----/ +---+ + * +---+ + * + * multi { + * ports { + * port@0 { mcpu_top_ep {... = mcodec_ep; }; }; // (X) to pair + * <mcpu_port> port@1 { mcpu0_ep { ... = cpu0_ep; }; // (A) Multi Element + * mcpu0_ep_0 { ... = mcodec0_ep_0; }; }; // (1) connected Codec + * port@2 { mcpu1_ep { ... = cpu1_ep; }; // (B) Multi Element + * mcpu1_ep_0 { ... = mcodec1_ep_0; }; }; // (2) connected Codec + * port@3 { mcpu2_ep { ... = cpu2_ep; }; // (C) Multi Element + * mcpu2_ep_0 { ... = mcodec1_ep_1; }; }; // (3) connected Codec + * }; + * + * ports { + * port@0 { mcodec_top_ep {... = mcpu_ep; }; }; // (x) to pair + * <mcodec_port>port@1 { mcodec0_ep { ... = codec0_ep; }; // (a) Multi Element + * mcodec0_ep_0 { ... = mcpu0_ep_0; }; }; // (4) connected CPU + * port@2 { mcodec1_ep { ... = codec1_ep; }; // (b) Multi Element + * mcodec1_ep_0 { ... = mcpu1_ep_0; }; // (5) connected CPU + * mcodec1_ep_1 { ... = mcpu2_ep_0; }; }; // (5) connected CPU + * }; + * }; + */ + struct device_node *mcpu_ep = port_to_endpoint(mcpu_port); + struct device_node *mcpu_ep_n = mcpu_ep; + struct device_node *mcpu_port_top = of_get_next_child(of_get_parent(mcpu_port), NULL); + struct device_node *mcpu_ep_top = port_to_endpoint(mcpu_port_top); + struct device_node *mcodec_ep_top = of_graph_get_remote_endpoint(mcpu_ep_top); + struct device_node *mcodec_port_top = of_get_parent(mcodec_ep_top); + struct device_node *mcodec_ports = of_get_parent(mcodec_port_top); + int nm_max = max(dai_link->num_cpus, dai_link->num_codecs); + int ret = -EINVAL; + + if (cpu_idx > dai_link->num_cpus) + goto mcpu_err; + + while (1) { + struct device_node *mcodec_ep_n; + struct device_node *mcodec_port_i; + struct device_node *mcodec_port; + int codec_idx; + + if (*nm_idx > nm_max) + break; + + mcpu_ep_n = of_get_next_child(mcpu_port, mcpu_ep_n); + if (!mcpu_ep_n) { + ret = 0; + break; + } + + mcodec_ep_n = of_graph_get_remote_endpoint(mcpu_ep_n); + mcodec_port = of_get_parent(mcodec_ep_n); + + if (mcodec_ports != of_get_parent(mcodec_port)) + goto mcpu_err; + + codec_idx = 0; + mcodec_port_i = of_get_next_child(mcodec_ports, NULL); + while (1) { + if (codec_idx > dai_link->num_codecs) + goto mcodec_err; + + mcodec_port_i = of_get_next_child(mcodec_ports, mcodec_port_i); + + if (!mcodec_port_i) + goto mcodec_err; + + if (mcodec_port_i == mcodec_port) + break; + + codec_idx++; + } + + dai_link->ch_maps[*nm_idx].cpu = cpu_idx; + dai_link->ch_maps[*nm_idx].codec = codec_idx; + + (*nm_idx)++; + + of_node_put(mcodec_port_i); +mcodec_err: + of_node_put(mcodec_port); + of_node_put(mcpu_ep_n); + of_node_put(mcodec_ep_n); + } +mcpu_err: + of_node_put(mcpu_ep); + of_node_put(mcpu_port_top); + of_node_put(mcpu_ep_top); + of_node_put(mcodec_ep_top); + of_node_put(mcodec_port_top); + of_node_put(mcodec_ports); + + return ret; +} + +static int graph_parse_node_multi(struct simple_util_priv *priv, + enum graph_type gtype, + struct device_node *port, + struct link_info *li, int is_cpu) +{ + struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); + struct device *dev = simple_priv_to_dev(priv); + struct device_node *ep; + int ret = -ENOMEM; + int nm_idx = 0; + int nm_max = max(dai_link->num_cpus, dai_link->num_codecs); + + /* + * create ch_maps if CPU:Codec = N:M + * DPCM is out of scope + */ + if (gtype != GRAPH_DPCM && !dai_link->ch_maps && + dai_link->num_cpus > 1 && dai_link->num_codecs > 1 && + dai_link->num_cpus != dai_link->num_codecs) { + + dai_link->ch_maps = devm_kcalloc(dev, nm_max, + sizeof(struct snd_soc_dai_link_ch_map), GFP_KERNEL); + if (!dai_link->ch_maps) + goto multi_err; + } + + for (int idx = 0;; idx++) { + /* + * multi { + * ports { + * <port> port@0 { ... }; // to pair + * port@1 { mcpu1_ep { ... = cpu1_ep };}; // Multi Element + * port@2 { mcpu2_ep { ... = cpu2_ep };}; // Multi Element + * }; + * }; + * + * cpu { + * ports { + * <ep> port@0 { cpu1_ep { ... = mcpu1_ep };}; + * }; + * }; + */ + ep = graph_get_next_multi_ep(&port); + if (!ep) + break; + + ret = __graph_parse_node(priv, gtype, ep, li, is_cpu, idx); + of_node_put(ep); + if (ret < 0) + goto multi_err; + + /* CPU:Codec = N:M */ + if (is_cpu && dai_link->ch_maps) { + ret = graph_parse_node_multi_nm(dai_link, &nm_idx, idx, port); + if (ret < 0) + goto multi_err; + } + } + + if (is_cpu && dai_link->ch_maps && (nm_idx != nm_max)) + ret = -EINVAL; + +multi_err: + return ret; +} + +static int graph_parse_node_single(struct simple_util_priv *priv, + enum graph_type gtype, + struct device_node *port, + struct link_info *li, int is_cpu) +{ + struct device_node *ep = port_to_endpoint(port); + int ret = __graph_parse_node(priv, gtype, ep, li, is_cpu, 0); + + of_node_put(ep); + + return ret; +} + +static int graph_parse_node(struct simple_util_priv *priv, + enum graph_type gtype, + struct device_node *port, + struct link_info *li, int is_cpu) +{ + if (graph_lnk_is_multi(port)) + return graph_parse_node_multi(priv, gtype, port, li, is_cpu); + else + return graph_parse_node_single(priv, gtype, port, li, is_cpu); +} + +static void graph_parse_daifmt(struct device_node *node, + unsigned int *daifmt, unsigned int *bit_frame) +{ + unsigned int fmt; + + /* + * see also above "daifmt" explanation + * and samples. + */ + + /* + * ports { + * (A) + * port { + * (B) + * endpoint { + * (C) + * }; + * }; + * }; + * }; + */ + + /* + * clock_provider: + * + * It can be judged it is provider + * if (A) or (B) or (C) has bitclock-master / frame-master flag. + * + * use "or" + */ + *bit_frame |= snd_soc_daifmt_parse_clock_provider_as_bitmap(node, NULL); + +#define update_daifmt(name) \ + if (!(*daifmt & SND_SOC_DAIFMT_##name##_MASK) && \ + (fmt & SND_SOC_DAIFMT_##name##_MASK)) \ + *daifmt |= fmt & SND_SOC_DAIFMT_##name##_MASK + + /* + * format + * + * This function is called by (C) -> (B) -> (A) order. + * Set if applicable part was not yet set. + */ + fmt = snd_soc_daifmt_parse_format(node, NULL); + update_daifmt(FORMAT); + update_daifmt(CLOCK); + update_daifmt(INV); +} + +static void graph_link_init(struct simple_util_priv *priv, + struct device_node *port, + struct link_info *li, + int is_cpu_node) +{ + struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); + struct device_node *ep; + struct device_node *ports; + unsigned int daifmt = 0, daiclk = 0; + bool playback_only = 0, capture_only = 0; + unsigned int bit_frame = 0; + + if (graph_lnk_is_multi(port)) { + of_node_get(port); + ep = graph_get_next_multi_ep(&port); + port = of_get_parent(ep); + } else { + ep = port_to_endpoint(port); + } + + ports = of_get_parent(port); + + /* + * ports { + * (A) + * port { + * (B) + * endpoint { + * (C) + * }; + * }; + * }; + * }; + */ + graph_parse_daifmt(ep, &daifmt, &bit_frame); /* (C) */ + graph_parse_daifmt(port, &daifmt, &bit_frame); /* (B) */ + if (of_node_name_eq(ports, "ports")) + graph_parse_daifmt(ports, &daifmt, &bit_frame); /* (A) */ + + /* + * convert bit_frame + * We need to flip clock_provider if it was CPU node, + * because it is Codec base. + */ + daiclk = snd_soc_daifmt_clock_provider_from_bitmap(bit_frame); + if (is_cpu_node) + daiclk = snd_soc_daifmt_clock_provider_flipped(daiclk); + + graph_util_parse_link_direction(port, &playback_only, &capture_only); + + dai_link->playback_only = playback_only; + dai_link->capture_only = capture_only; + + dai_link->dai_fmt = daifmt | daiclk; + dai_link->init = simple_util_dai_init; + dai_link->ops = &graph_ops; + if (priv->ops) + dai_link->ops = priv->ops; +} + +int audio_graph2_link_normal(struct simple_util_priv *priv, + struct device_node *lnk, + struct link_info *li) +{ + struct device_node *cpu_port = lnk; + struct device_node *cpu_ep = port_to_endpoint(cpu_port); + struct device_node *codec_port = of_graph_get_remote_port(cpu_ep); + int ret; + + /* + * call Codec first. + * see + * __graph_parse_node() :: DAI Naming + */ + ret = graph_parse_node(priv, GRAPH_NORMAL, codec_port, li, 0); + if (ret < 0) + goto err; + + /* + * call CPU, and set DAI Name + */ + ret = graph_parse_node(priv, GRAPH_NORMAL, cpu_port, li, 1); + if (ret < 0) + goto err; + + graph_link_init(priv, cpu_port, li, 1); +err: + of_node_put(codec_port); + of_node_put(cpu_ep); + + return ret; +} +EXPORT_SYMBOL_GPL(audio_graph2_link_normal); + +int audio_graph2_link_dpcm(struct simple_util_priv *priv, + struct device_node *lnk, + struct link_info *li) +{ + struct device_node *ep = port_to_endpoint(lnk); + struct device_node *rep = of_graph_get_remote_endpoint(ep); + struct device_node *rport = of_graph_get_remote_port(ep); + struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); + struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); + int is_cpu = graph_util_is_ports0(lnk); + int ret; + + if (is_cpu) { + /* + * dpcm { + * // Front-End + * ports@0 { + * => lnk: port@0 { ep: { ... = rep }; }; + * ... + * }; + * // Back-End + * ports@0 { + * ... + * }; + * }; + * + * CPU { + * rports: ports { + * rport: port@0 { rep: { ... = ep } }; + * } + * } + */ + /* + * setup CPU here, Codec is already set as dummy. + * see + * simple_util_init_priv() + */ + dai_link->dynamic = 1; + dai_link->dpcm_merged_format = 1; + + ret = graph_parse_node(priv, GRAPH_DPCM, rport, li, 1); + if (ret) + goto err; + } else { + /* + * dpcm { + * // Front-End + * ports@0 { + * ... + * }; + * // Back-End + * ports@0 { + * => lnk: port@0 { ep: { ... = rep; }; }; + * ... + * }; + * }; + * + * Codec { + * rports: ports { + * rport: port@0 { rep: { ... = ep; }; }; + * } + * } + */ + /* + * setup Codec here, CPU is already set as dummy. + * see + * simple_util_init_priv() + */ + + /* BE settings */ + dai_link->no_pcm = 1; + dai_link->be_hw_params_fixup = simple_util_be_hw_params_fixup; + + ret = graph_parse_node(priv, GRAPH_DPCM, rport, li, 0); + if (ret < 0) + goto err; + } + + graph_parse_convert(ep, dai_props); /* at node of <dpcm> */ + graph_parse_convert(rep, dai_props); /* at node of <CPU/Codec> */ + + snd_soc_dai_link_set_capabilities(dai_link); + + graph_link_init(priv, rport, li, is_cpu); +err: + of_node_put(ep); + of_node_put(rep); + of_node_put(rport); + + return ret; +} +EXPORT_SYMBOL_GPL(audio_graph2_link_dpcm); + +int audio_graph2_link_c2c(struct simple_util_priv *priv, + struct device_node *lnk, + struct link_info *li) +{ + struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link); + struct device_node *port0, *port1, *ports; + struct device_node *codec0_port, *codec1_port; + struct device_node *ep0, *ep1; + u32 val = 0; + int ret = -EINVAL; + + /* + * codec2codec { + * ports { + * rate = <48000>; + * => lnk: port@0 { c2c0_ep: { ... = codec0_ep; }; }; + * port@1 { c2c1_ep: { ... = codec1_ep; }; }; + * }; + * }; + * + * Codec { + * ports { + * port@0 { codec0_ep: ... }; }; + * port@1 { codec1_ep: ... }; }; + * }; + * }; + */ + of_node_get(lnk); + port0 = lnk; + ports = of_get_parent(port0); + port1 = of_get_next_child(ports, lnk); + + /* + * Card2 can use original Codec2Codec settings if DT has. + * It will use default settings if no settings on DT. + * see + * simple_util_init_for_codec2codec() + * + * Add more settings here if needed + */ + of_property_read_u32(ports, "rate", &val); + if (val) { + struct device *dev = simple_priv_to_dev(priv); + struct snd_soc_pcm_stream *c2c_conf; + + c2c_conf = devm_kzalloc(dev, sizeof(*c2c_conf), GFP_KERNEL); + if (!c2c_conf) + goto err1; + + c2c_conf->formats = SNDRV_PCM_FMTBIT_S32_LE; /* update ME */ + c2c_conf->rates = SNDRV_PCM_RATE_8000_384000; + c2c_conf->rate_min = + c2c_conf->rate_max = val; + c2c_conf->channels_min = + c2c_conf->channels_max = 2; /* update ME */ + + dai_link->c2c_params = c2c_conf; + dai_link->num_c2c_params = 1; + } + + ep0 = port_to_endpoint(port0); + ep1 = port_to_endpoint(port1); + + codec0_port = of_graph_get_remote_port(ep0); + codec1_port = of_graph_get_remote_port(ep1); + + /* + * call Codec first. + * see + * __graph_parse_node() :: DAI Naming + */ + ret = graph_parse_node(priv, GRAPH_C2C, codec1_port, li, 0); + if (ret < 0) + goto err2; + + /* + * call CPU, and set DAI Name + */ + ret = graph_parse_node(priv, GRAPH_C2C, codec0_port, li, 1); + if (ret < 0) + goto err2; + + graph_link_init(priv, codec0_port, li, 1); +err2: + of_node_put(ep0); + of_node_put(ep1); + of_node_put(codec0_port); + of_node_put(codec1_port); +err1: + of_node_put(ports); + of_node_put(port0); + of_node_put(port1); + + return ret; +} +EXPORT_SYMBOL_GPL(audio_graph2_link_c2c); + +static int graph_link(struct simple_util_priv *priv, + struct graph2_custom_hooks *hooks, + enum graph_type gtype, + struct device_node *lnk, + struct link_info *li) +{ + struct device *dev = simple_priv_to_dev(priv); + GRAPH2_CUSTOM func = NULL; + int ret = -EINVAL; + + switch (gtype) { + case GRAPH_NORMAL: + if (hooks && hooks->custom_normal) + func = hooks->custom_normal; + else + func = audio_graph2_link_normal; + break; + case GRAPH_DPCM: + if (hooks && hooks->custom_dpcm) + func = hooks->custom_dpcm; + else + func = audio_graph2_link_dpcm; + break; + case GRAPH_C2C: + if (hooks && hooks->custom_c2c) + func = hooks->custom_c2c; + else + func = audio_graph2_link_c2c; + break; + default: + break; + } + + if (!func) { + dev_err(dev, "non supported gtype (%d)\n", gtype); + goto err; + } + + ret = func(priv, lnk, li); + if (ret < 0) + goto err; + + li->link++; +err: + return ret; +} + +static int graph_counter(struct device_node *lnk) +{ + /* + * Multi CPU / Codec + * + * multi { + * ports { + * => lnk: port@0 { ... }; // to pair + * port@1 { ... }; // Multi Element + * port@2 { ... }; // Multi Element + * ... + * }; + * }; + * + * ignore first lnk part + */ + if (graph_lnk_is_multi(lnk)) { + struct device_node *ports = of_get_parent(lnk); + struct device_node *port = NULL; + int cnt = 0; + + /* + * CPU/Codec = N:M case has many endpoints. + * We can't use of_graph_get_endpoint_count() here + */ + while(1) { + port = of_get_next_child(ports, port); + if (!port) + break; + cnt++; + } + + return cnt - 1; + } + /* + * Single CPU / Codec + */ + else + return 1; +} + +static int graph_count_normal(struct simple_util_priv *priv, + struct device_node *lnk, + struct link_info *li) +{ + struct device_node *cpu_port = lnk; + struct device_node *cpu_ep = port_to_endpoint(cpu_port); + struct device_node *codec_port = of_graph_get_remote_port(cpu_ep); + + /* + * CPU { + * => lnk: port { endpoint { .. }; }; + * }; + */ + /* + * DON'T REMOVE platforms + * see + * simple-card.c :: simple_count_noml() + */ + li->num[li->link].cpus = + li->num[li->link].platforms = graph_counter(cpu_port); + + li->num[li->link].codecs = graph_counter(codec_port); + + of_node_put(cpu_ep); + of_node_put(codec_port); + + return 0; +} + +static int graph_count_dpcm(struct simple_util_priv *priv, + struct device_node *lnk, + struct link_info *li) +{ + struct device_node *ep = port_to_endpoint(lnk); + struct device_node *rport = of_graph_get_remote_port(ep); + + /* + * dpcm { + * // Front-End + * ports@0 { + * => lnk: port@0 { endpoint { ... }; }; + * ... + * }; + * // Back-End + * ports@1 { + * => lnk: port@0 { endpoint { ... }; }; + * ... + * }; + * }; + */ + + if (graph_util_is_ports0(lnk)) { + /* + * DON'T REMOVE platforms + * see + * simple-card.c :: simple_count_noml() + */ + li->num[li->link].cpus = graph_counter(rport); /* FE */ + li->num[li->link].platforms = graph_counter(rport); + } else { + li->num[li->link].codecs = graph_counter(rport); /* BE */ + } + + of_node_put(ep); + of_node_put(rport); + + return 0; +} + +static int graph_count_c2c(struct simple_util_priv *priv, + struct device_node *lnk, + struct link_info *li) +{ + struct device_node *ports = of_get_parent(lnk); + struct device_node *port0 = lnk; + struct device_node *port1 = of_get_next_child(ports, lnk); + struct device_node *ep0 = port_to_endpoint(port0); + struct device_node *ep1 = port_to_endpoint(port1); + struct device_node *codec0 = of_graph_get_remote_port(ep0); + struct device_node *codec1 = of_graph_get_remote_port(ep1); + + of_node_get(lnk); + + /* + * codec2codec { + * ports { + * => lnk: port@0 { endpoint { ... }; }; + * port@1 { endpoint { ... }; }; + * }; + * }; + */ + /* + * DON'T REMOVE platforms + * see + * simple-card.c :: simple_count_noml() + */ + li->num[li->link].cpus = + li->num[li->link].platforms = graph_counter(codec0); + + li->num[li->link].codecs = graph_counter(codec1); + + of_node_put(ports); + of_node_put(port1); + of_node_put(ep0); + of_node_put(ep1); + of_node_put(codec0); + of_node_put(codec1); + + return 0; +} + +static int graph_count(struct simple_util_priv *priv, + struct graph2_custom_hooks *hooks, + enum graph_type gtype, + struct device_node *lnk, + struct link_info *li) +{ + struct device *dev = simple_priv_to_dev(priv); + GRAPH2_CUSTOM func = NULL; + int ret = -EINVAL; + + if (li->link >= SNDRV_MAX_LINKS) { + dev_err(dev, "too many links\n"); + return ret; + } + + switch (gtype) { + case GRAPH_NORMAL: + func = graph_count_normal; + break; + case GRAPH_DPCM: + func = graph_count_dpcm; + break; + case GRAPH_C2C: + func = graph_count_c2c; + break; + default: + break; + } + + if (!func) { + dev_err(dev, "non supported gtype (%d)\n", gtype); + goto err; + } + + ret = func(priv, lnk, li); + if (ret < 0) + goto err; + + li->link++; +err: + return ret; +} + +static int graph_for_each_link(struct simple_util_priv *priv, + struct graph2_custom_hooks *hooks, + struct link_info *li, + int (*func)(struct simple_util_priv *priv, + struct graph2_custom_hooks *hooks, + enum graph_type gtype, + struct device_node *lnk, + struct link_info *li)) +{ + struct of_phandle_iterator it; + struct device *dev = simple_priv_to_dev(priv); + struct device_node *node = dev->of_node; + struct device_node *lnk; + enum graph_type gtype; + int rc, ret; + + /* loop for all listed CPU port */ + of_for_each_phandle(&it, rc, node, "links", NULL, 0) { + lnk = it.node; + + gtype = graph_get_type(priv, lnk); + + ret = func(priv, hooks, gtype, lnk, li); + if (ret < 0) + return ret; + } + + return 0; +} + +int audio_graph2_parse_of(struct simple_util_priv *priv, struct device *dev, + struct graph2_custom_hooks *hooks) +{ + struct snd_soc_card *card = simple_priv_to_card(priv); + struct link_info *li; + int ret; + + li = devm_kzalloc(dev, sizeof(*li), GFP_KERNEL); + if (!li) + return -ENOMEM; + + card->probe = graph_util_card_probe; + card->owner = THIS_MODULE; + card->dev = dev; + + if ((hooks) && (hooks)->hook_pre) { + ret = (hooks)->hook_pre(priv); + if (ret < 0) + goto err; + } + + ret = graph_for_each_link(priv, hooks, li, graph_count); + if (!li->link) + ret = -EINVAL; + if (ret < 0) + goto err; + + ret = simple_util_init_priv(priv, li); + if (ret < 0) + goto err; + + priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW); + if (IS_ERR(priv->pa_gpio)) { + ret = PTR_ERR(priv->pa_gpio); + dev_err(dev, "failed to get amplifier gpio: %d\n", ret); + goto err; + } + + ret = simple_util_parse_widgets(card, NULL); + if (ret < 0) + goto err; + + ret = simple_util_parse_routing(card, NULL); + if (ret < 0) + goto err; + + memset(li, 0, sizeof(*li)); + ret = graph_for_each_link(priv, hooks, li, graph_link); + if (ret < 0) + goto err; + + ret = simple_util_parse_card_name(card, NULL); + if (ret < 0) + goto err; + + snd_soc_card_set_drvdata(card, priv); + + if ((hooks) && (hooks)->hook_post) { + ret = (hooks)->hook_post(priv); + if (ret < 0) + goto err; + } + + simple_util_debug_info(priv); + + ret = devm_snd_soc_register_card(dev, card); +err: + devm_kfree(dev, li); + + if (ret < 0) + dev_err_probe(dev, ret, "parse error\n"); + + return ret; +} +EXPORT_SYMBOL_GPL(audio_graph2_parse_of); + +static int graph_probe(struct platform_device *pdev) +{ + struct simple_util_priv *priv; + struct device *dev = &pdev->dev; + + /* Allocate the private data and the DAI link array */ + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + return audio_graph2_parse_of(priv, dev, NULL); +} + +static const struct of_device_id graph_of_match[] = { + { .compatible = "audio-graph-card2", }, + {}, +}; +MODULE_DEVICE_TABLE(of, graph_of_match); + +static struct platform_driver graph_card = { + .driver = { + .name = "asoc-audio-graph-card2", + .pm = &snd_soc_pm_ops, + .of_match_table = graph_of_match, + }, + .probe = graph_probe, + .remove_new = simple_util_remove, +}; +module_platform_driver(graph_card); + +MODULE_ALIAS("platform:asoc-audio-graph-card2"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("ASoC Audio Graph Card2"); +MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |