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authorRongjun Ying <rongjun.ying@csr.com>2014-03-05 03:34:36 -0500
committerMark Brown <broonie@linaro.org>2014-03-06 04:21:56 -0500
commitaf12a31f054f55b75c8cf4a459c7bd9d1c7726a9 (patch)
treee1904713b5516fdaf14fa88235634c4b0ee7ceb1
parenta731e217df3a2ee3ef9413153ed7b45e578d8687 (diff)
ASoC: sirf: Add SiRF audio card
This connects platform DAI, SiRF internal audio codec DAI and SiRF auido port DAI together and works as a mach driver. Signed-off-by: Rongjun Ying <rongjun.ying@csr.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat
-rw-r--r--Documentation/devicetree/bindings/sound/sirf-audio.txt41
-rw-r--r--sound/soc/sirf/Kconfig6
-rw-r--r--sound/soc/sirf/Makefile2
-rw-r--r--sound/soc/sirf/sirf-audio.c156
4 files changed, 205 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/sirf-audio.txt b/Documentation/devicetree/bindings/sound/sirf-audio.txt
new file mode 100644
index 000000000000..c88882ca3704
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/sirf-audio.txt
@@ -0,0 +1,41 @@
1* SiRF atlas6 and prima2 internal audio codec and port based audio setups
2
3Required properties:
4- compatible: "sirf,sirf-audio-card"
5- sirf,audio-platform: phandle for the platform node
6- sirf,audio-codec: phandle for the SiRF internal codec node
7
8Optional properties:
9- hp-pa-gpios: Need to be present if the board need control external
10 headphone amplifier.
11- spk-pa-gpios: Need to be present if the board need control external
12 speaker amplifier.
13- hp-switch-gpios: Need to be present if the board capable to detect jack
14 insertion, removal.
15
16Available audio endpoints for the audio-routing table:
17
18Board connectors:
19 * Headset Stereophone
20 * Ext Spk
21 * Line In
22 * Mic
23
24SiRF internal audio codec pins:
25 * HPOUTL
26 * HPOUTR
27 * SPKOUT
28 * Ext Mic
29 * Mic Bias
30
31Example:
32
33sound {
34 compatible = "sirf,sirf-audio-card";
35 sirf,audio-codec = <&audiocodec>;
36 sirf,audio-platform = <&audioport>;
37 hp-pa-gpios = <&gpio 44 0>;
38 spk-pa-gpios = <&gpio 46 0>;
39 hp-switch-gpios = <&gpio 45 0>;
40};
41
diff --git a/sound/soc/sirf/Kconfig b/sound/soc/sirf/Kconfig
index 75b0344d2151..89e89429b04a 100644
--- a/sound/soc/sirf/Kconfig
+++ b/sound/soc/sirf/Kconfig
@@ -3,6 +3,12 @@ config SND_SOC_SIRF
3 depends on ARCH_SIRF || COMPILE_TEST 3 depends on ARCH_SIRF || COMPILE_TEST
4 select SND_SOC_GENERIC_DMAENGINE_PCM 4 select SND_SOC_GENERIC_DMAENGINE_PCM
5 5
6config SND_SOC_SIRF_AUDIO
7 tristate "SoC Audio support for SiRF internal audio codec"
8 depends on SND_SOC_SIRF
9 select SND_SOC_SIRF_AUDIO_CODEC
10 select SND_SOC_SIRF_AUDIO_PORT
11
6config SND_SOC_SIRF_AUDIO_PORT 12config SND_SOC_SIRF_AUDIO_PORT
7 select REGMAP_MMIO 13 select REGMAP_MMIO
8 tristate 14 tristate
diff --git a/sound/soc/sirf/Makefile b/sound/soc/sirf/Makefile
index fb012c852b28..913b93231d4e 100644
--- a/sound/soc/sirf/Makefile
+++ b/sound/soc/sirf/Makefile
@@ -1,3 +1,5 @@
1snd-soc-sirf-audio-objs := sirf-audio.o
1snd-soc-sirf-audio-port-objs := sirf-audio-port.o 2snd-soc-sirf-audio-port-objs := sirf-audio-port.o
2 3
4obj-$(CONFIG_SND_SOC_SIRF_AUDIO) += snd-soc-sirf-audio.o
3obj-$(CONFIG_SND_SOC_SIRF_AUDIO_PORT) += snd-soc-sirf-audio-port.o 5obj-$(CONFIG_SND_SOC_SIRF_AUDIO_PORT) += snd-soc-sirf-audio-port.o
diff --git a/sound/soc/sirf/sirf-audio.c b/sound/soc/sirf/sirf-audio.c
new file mode 100644
index 000000000000..ecef51021653
--- /dev/null
+++ b/sound/soc/sirf/sirf-audio.c
@@ -0,0 +1,156 @@
1/*
2 * SiRF audio card driver
3 *
4 * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
5 *
6 * Licensed under GPLv2 or later.
7 */
8
9#include <linux/platform_device.h>
10#include <linux/module.h>
11#include <linux/of.h>
12#include <linux/gpio.h>
13#include <linux/of_gpio.h>
14#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/soc.h>
17
18struct sirf_audio_card {
19 unsigned int gpio_hp_pa;
20 unsigned int gpio_spk_pa;
21};
22
23static int sirf_audio_hp_event(struct snd_soc_dapm_widget *w,
24 struct snd_kcontrol *ctrl, int event)
25{
26 struct snd_soc_dapm_context *dapm = w->dapm;
27 struct snd_soc_card *card = dapm->card;
28 struct sirf_audio_card *sirf_audio_card = snd_soc_card_get_drvdata(card);
29 int on = !SND_SOC_DAPM_EVENT_OFF(event);
30 if (gpio_is_valid(sirf_audio_card->gpio_hp_pa))
31 gpio_set_value(sirf_audio_card->gpio_hp_pa, on);
32 return 0;
33}
34
35static int sirf_audio_spk_event(struct snd_soc_dapm_widget *w,
36 struct snd_kcontrol *ctrl, int event)
37{
38 struct snd_soc_dapm_context *dapm = w->dapm;
39 struct snd_soc_card *card = dapm->card;
40 struct sirf_audio_card *sirf_audio_card = snd_soc_card_get_drvdata(card);
41 int on = !SND_SOC_DAPM_EVENT_OFF(event);
42
43 if (gpio_is_valid(sirf_audio_card->gpio_spk_pa))
44 gpio_set_value(sirf_audio_card->gpio_spk_pa, on);
45
46 return 0;
47}
48static const struct snd_soc_dapm_widget sirf_audio_dapm_widgets[] = {
49 SND_SOC_DAPM_HP("Hp", sirf_audio_hp_event),
50 SND_SOC_DAPM_SPK("Ext Spk", sirf_audio_spk_event),
51 SND_SOC_DAPM_MIC("Ext Mic", NULL),
52};
53
54static const struct snd_soc_dapm_route intercon[] = {
55 {"Hp", NULL, "HPOUTL"},
56 {"Hp", NULL, "HPOUTR"},
57 {"Ext Spk", NULL, "SPKOUT"},
58 {"MICIN1", NULL, "Mic Bias"},
59 {"Mic Bias", NULL, "Ext Mic"},
60};
61
62/* Digital audio interface glue - connects codec <--> CPU */
63static struct snd_soc_dai_link sirf_audio_dai_link[] = {
64 {
65 .name = "SiRF audio card",
66 .stream_name = "SiRF audio HiFi",
67 .codec_dai_name = "sirf-audio-codec",
68 },
69};
70
71/* Audio machine driver */
72static struct snd_soc_card snd_soc_sirf_audio_card = {
73 .name = "SiRF audio card",
74 .owner = THIS_MODULE,
75 .dai_link = sirf_audio_dai_link,
76 .num_links = ARRAY_SIZE(sirf_audio_dai_link),
77 .dapm_widgets = sirf_audio_dapm_widgets,
78 .num_dapm_widgets = ARRAY_SIZE(sirf_audio_dapm_widgets),
79 .dapm_routes = intercon,
80 .num_dapm_routes = ARRAY_SIZE(intercon),
81};
82
83static int sirf_audio_probe(struct platform_device *pdev)
84{
85 struct snd_soc_card *card = &snd_soc_sirf_audio_card;
86 struct sirf_audio_card *sirf_audio_card;
87 int ret;
88
89 sirf_audio_card = devm_kzalloc(&pdev->dev, sizeof(struct sirf_audio_card),
90 GFP_KERNEL);
91 if (sirf_audio_card == NULL)
92 return -ENOMEM;
93
94 sirf_audio_dai_link[0].cpu_of_node =
95 of_parse_phandle(pdev->dev.of_node, "sirf,audio-platform", 0);
96 sirf_audio_dai_link[0].platform_of_node =
97 of_parse_phandle(pdev->dev.of_node, "sirf,audio-platform", 0);
98 sirf_audio_dai_link[0].codec_of_node =
99 of_parse_phandle(pdev->dev.of_node, "sirf,audio-codec", 0);
100 sirf_audio_card->gpio_spk_pa = of_get_named_gpio(pdev->dev.of_node,
101 "spk-pa-gpios", 0);
102 sirf_audio_card->gpio_hp_pa = of_get_named_gpio(pdev->dev.of_node,
103 "hp-pa-gpios", 0);
104 if (gpio_is_valid(sirf_audio_card->gpio_spk_pa)) {
105 ret = devm_gpio_request_one(&pdev->dev,
106 sirf_audio_card->gpio_spk_pa,
107 GPIOF_OUT_INIT_LOW, "SPA_PA_SD");
108 if (ret) {
109 dev_err(&pdev->dev,
110 "Failed to request GPIO_%d for reset: %d\n",
111 sirf_audio_card->gpio_spk_pa, ret);
112 return ret;
113 }
114 }
115 if (gpio_is_valid(sirf_audio_card->gpio_hp_pa)) {
116 ret = devm_gpio_request_one(&pdev->dev,
117 sirf_audio_card->gpio_hp_pa,
118 GPIOF_OUT_INIT_LOW, "HP_PA_SD");
119 if (ret) {
120 dev_err(&pdev->dev,
121 "Failed to request GPIO_%d for reset: %d\n",
122 sirf_audio_card->gpio_hp_pa, ret);
123 return ret;
124 }
125 }
126
127 card->dev = &pdev->dev;
128 snd_soc_card_set_drvdata(card, sirf_audio_card);
129
130 ret = devm_snd_soc_register_card(&pdev->dev, card);
131 if (ret)
132 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
133
134 return ret;
135}
136
137static const struct of_device_id sirf_audio_of_match[] = {
138 {.compatible = "sirf,sirf-audio-card", },
139 { },
140};
141MODULE_DEVICE_TABLE(of, sirf_audio_of_match);
142
143static struct platform_driver sirf_audio_driver = {
144 .driver = {
145 .name = "sirf-audio-card",
146 .owner = THIS_MODULE,
147 .pm = &snd_soc_pm_ops,
148 .of_match_table = sirf_audio_of_match,
149 },
150 .probe = sirf_audio_probe,
151};
152module_platform_driver(sirf_audio_driver);
153
154MODULE_AUTHOR("RongJun Ying <RongJun.Ying@csr.com>");
155MODULE_DESCRIPTION("ALSA SoC SIRF audio card driver");
156MODULE_LICENSE("GPL v2");
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-17 23:23:38 -0400