// SPDX-License-Identifier: GPL-2.0
//
// ASoC Audio Graph Card2 support
//
// Copyright (C) 2020 Renesas Electronics Corp.
// Copyright (C) 2020 Kuninori Morimoto <[email protected]>
//
// 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")
#define ep_to_port(ep) of_get_parent(ep)
static struct device_node *port_to_ports(struct device_node *port)
{
struct device_node *ports = of_get_parent(port);
if (!of_node_name_eq(ports, "ports")) {
of_node_put(ports);
return NULL;
}
return ports;
}
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 = port_to_ports(*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 = ep_to_port(ep);
struct device_node *ports = port_to_ports(port);
struct simple_util_data *adata = &props->adata;
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 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);
}
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 = ep_to_port(ep);
struct device_node *rports = port_to_ports(rport);
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(port_to_ports(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 = ep_to_port(mcodec_ep_top);
struct device_node *mcodec_ports = port_to_ports(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 = ep_to_port(mcodec_ep_n);
if (mcodec_ports != port_to_ports(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;
if (!node)
return;
/*
* 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 *lnk,
struct device_node *port_cpu,
struct device_node *port_codec,
struct link_info *li,
int is_cpu_node)
{
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 device_node *ep_cpu, *ep_codec;
struct device_node *ports_cpu, *ports_codec;
unsigned int daifmt = 0, daiclk = 0;
bool playback_only = 0, capture_only = 0;
enum snd_soc_trigger_order trigger_start = SND_SOC_TRIGGER_ORDER_DEFAULT;
enum snd_soc_trigger_order trigger_stop = SND_SOC_TRIGGER_ORDER_DEFAULT;
unsigned int bit_frame = 0;
of_node_get(port_cpu);
if (graph_lnk_is_multi(port_cpu)) {
ep_cpu = graph_get_next_multi_ep(&port_cpu);
of_node_put(port_cpu);
port_cpu = ep_to_port(ep_cpu);
} else {
ep_cpu = port_to_endpoint(port_cpu);
}
ports_cpu = port_to_ports(port_cpu);
of_node_get(port_codec);
if (graph_lnk_is_multi(port_codec)) {
ep_codec = graph_get_next_multi_ep(&port_codec);
of_node_put(port_cpu);
port_codec = ep_to_port(ep_codec);
} else {
ep_codec = port_to_endpoint(port_codec);
}
ports_codec = port_to_ports(port_codec);
graph_parse_daifmt(ep_cpu, &daifmt, &bit_frame);
graph_parse_daifmt(ep_codec, &daifmt, &bit_frame);
graph_parse_daifmt(port_cpu, &daifmt, &bit_frame);
graph_parse_daifmt(port_codec, &daifmt, &bit_frame);
graph_parse_daifmt(ports_cpu, &daifmt, &bit_frame);
graph_parse_daifmt(ports_codec, &daifmt, &bit_frame);
graph_parse_daifmt(lnk, &daifmt, &bit_frame);
graph_util_parse_link_direction(lnk, &playback_only, &capture_only);
graph_util_parse_link_direction(ports_cpu, &playback_only, &capture_only);
graph_util_parse_link_direction(ports_codec, &playback_only, &capture_only);
graph_util_parse_link_direction(port_cpu, &playback_only, &capture_only);
graph_util_parse_link_direction(port_codec, &playback_only, &capture_only);
graph_util_parse_link_direction(ep_cpu, &playback_only, &capture_only);
graph_util_parse_link_direction(ep_codec, &playback_only, &capture_only);
of_property_read_u32(lnk, "mclk-fs", &dai_props->mclk_fs);
of_property_read_u32(ports_cpu, "mclk-fs", &dai_props->mclk_fs);
of_property_read_u32(ports_codec, "mclk-fs", &dai_props->mclk_fs);
of_property_read_u32(port_cpu, "mclk-fs", &dai_props->mclk_fs);
of_property_read_u32(port_codec, "mclk-fs", &dai_props->mclk_fs);
of_property_read_u32(ep_cpu, "mclk-fs", &dai_props->mclk_fs);
of_property_read_u32(ep_codec, "mclk-fs", &dai_props->mclk_fs);
graph_util_parse_trigger_order(priv, lnk, &trigger_start, &trigger_stop);
graph_util_parse_trigger_order(priv, ports_cpu, &trigger_start, &trigger_stop);
graph_util_parse_trigger_order(priv, ports_codec, &trigger_start, &trigger_stop);
graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop);
graph_util_parse_trigger_order(priv, port_cpu, &trigger_start, &trigger_stop);
graph_util_parse_trigger_order(priv, ep_cpu, &trigger_start, &trigger_stop);
graph_util_parse_trigger_order(priv, ep_codec, &trigger_start, &trigger_stop);
/*
* 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);
dai_link->playback_only = playback_only;
dai_link->capture_only = capture_only;
dai_link->trigger_start = trigger_start;
dai_link->trigger_stop = trigger_stop;
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;
of_node_put(ports_cpu);
of_node_put(ports_codec);
of_node_put(port_cpu);
of_node_put(port_codec);
of_node_put(ep_cpu);
of_node_put(ep_codec);
}
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, lnk, cpu_port, codec_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 *cpu_port = NULL;
struct device_node *codec_port = NULL;
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) {
cpu_port = of_graph_get_remote_port(ep); /* rport */
/*
* 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, cpu_port, li, 1);
if (ret)
goto err;
} else {
codec_port = of_graph_get_remote_port(ep); /* rport */
/*
* 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, codec_port, 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> */
graph_link_init(priv, lnk, cpu_port, codec_port, li, is_cpu);
err:
of_node_put(ep);
of_node_put(rep);
of_node_put(cpu_port);
of_node_put(codec_port);
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 = port_to_ports(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, lnk, codec0_port, codec1_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 = port_to_ports(lnk);
/*
* CPU/Codec = N:M case has many endpoints.
* We can't use of_graph_get_endpoint_count() here
*/
return of_get_child_count(ports) - 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 = port_to_ports(lnk);
struct device_node *port0 = lnk;
struct device_node *port1 = of_get_next_child(ports, of_node_get(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);
/*
* 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);
int ret;
struct link_info *li __free(kfree) = kzalloc(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 = snd_soc_of_parse_aux_devs(card, "aux-devs");
if (ret < 0)
goto err;
ret = devm_snd_soc_register_card(dev, card);
err:
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 = 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 <[email protected]>");
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