[alsa-devel] [PATCH v4-resend 3/7] ASoC: sirf: Add SiRF audio card
RongJun Ying
rjying at gmail.com
Wed Feb 26 08:22:18 CET 2014
From: Rongjun Ying <rongjun.ying at csr.com>
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 at csr.com>
---
.../devicetree/bindings/sound/sirf-audio.txt | 41 +++++
sound/soc/sirf/Kconfig | 5 +
sound/soc/sirf/Makefile | 2 +
sound/soc/sirf/sirf-audio.c | 156 ++++++++++++++++++++
4 files changed, 204 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/sound/sirf-audio.txt
create mode 100644 sound/soc/sirf/sirf-audio.c
diff --git a/Documentation/devicetree/bindings/sound/sirf-audio.txt b/Documentation/devicetree/bindings/sound/sirf-audio.txt
new file mode 100644
index 0000000..c88882c
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/sirf-audio.txt
@@ -0,0 +1,41 @@
+* SiRF atlas6 and prima2 internal audio codec and port based audio setups
+
+Required properties:
+- compatible: "sirf,sirf-audio-card"
+- sirf,audio-platform: phandle for the platform node
+- sirf,audio-codec: phandle for the SiRF internal codec node
+
+Optional properties:
+- hp-pa-gpios: Need to be present if the board need control external
+ headphone amplifier.
+- spk-pa-gpios: Need to be present if the board need control external
+ speaker amplifier.
+- hp-switch-gpios: Need to be present if the board capable to detect jack
+ insertion, removal.
+
+Available audio endpoints for the audio-routing table:
+
+Board connectors:
+ * Headset Stereophone
+ * Ext Spk
+ * Line In
+ * Mic
+
+SiRF internal audio codec pins:
+ * HPOUTL
+ * HPOUTR
+ * SPKOUT
+ * Ext Mic
+ * Mic Bias
+
+Example:
+
+sound {
+ compatible = "sirf,sirf-audio-card";
+ sirf,audio-codec = <&audiocodec>;
+ sirf,audio-platform = <&audioport>;
+ hp-pa-gpios = <&gpio 44 0>;
+ spk-pa-gpios = <&gpio 46 0>;
+ hp-switch-gpios = <&gpio 45 0>;
+};
+
diff --git a/sound/soc/sirf/Kconfig b/sound/soc/sirf/Kconfig
index 5b5407f..a8e083b 100644
--- a/sound/soc/sirf/Kconfig
+++ b/sound/soc/sirf/Kconfig
@@ -7,3 +7,8 @@ config SND_SOC_SIRF_AUDIO_PORT
select REGMAP_MMIO
tristate
+config SND_SOC_SIRF_AUDIO
+ tristate "SoC Audio support for SiRF internal audio codec"
+ depends on SND_SOC_SIRF
+ select SND_SOC_SIRF_AUDIO_CODEC
+ select SND_SOC_SIRF_AUDIO_PORT
diff --git a/sound/soc/sirf/Makefile b/sound/soc/sirf/Makefile
index fb012c8..4eea904 100644
--- a/sound/soc/sirf/Makefile
+++ b/sound/soc/sirf/Makefile
@@ -1,3 +1,5 @@
snd-soc-sirf-audio-port-objs := sirf-audio-port.o
+snd-soc-sirf-audio-objs := sirf-audio.o
obj-$(CONFIG_SND_SOC_SIRF_AUDIO_PORT) += snd-soc-sirf-audio-port.o
+obj-$(CONFIG_SND_SOC_SIRF_AUDIO) += snd-soc-sirf-audio.o
diff --git a/sound/soc/sirf/sirf-audio.c b/sound/soc/sirf/sirf-audio.c
new file mode 100644
index 0000000..ecef510
--- /dev/null
+++ b/sound/soc/sirf/sirf-audio.c
@@ -0,0 +1,156 @@
+/*
+ * SiRF audio card driver
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+struct sirf_audio_card {
+ unsigned int gpio_hp_pa;
+ unsigned int gpio_spk_pa;
+};
+
+static int sirf_audio_hp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *ctrl, int event)
+{
+ struct snd_soc_dapm_context *dapm = w->dapm;
+ struct snd_soc_card *card = dapm->card;
+ struct sirf_audio_card *sirf_audio_card = snd_soc_card_get_drvdata(card);
+ int on = !SND_SOC_DAPM_EVENT_OFF(event);
+ if (gpio_is_valid(sirf_audio_card->gpio_hp_pa))
+ gpio_set_value(sirf_audio_card->gpio_hp_pa, on);
+ return 0;
+}
+
+static int sirf_audio_spk_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *ctrl, int event)
+{
+ struct snd_soc_dapm_context *dapm = w->dapm;
+ struct snd_soc_card *card = dapm->card;
+ struct sirf_audio_card *sirf_audio_card = snd_soc_card_get_drvdata(card);
+ int on = !SND_SOC_DAPM_EVENT_OFF(event);
+
+ if (gpio_is_valid(sirf_audio_card->gpio_spk_pa))
+ gpio_set_value(sirf_audio_card->gpio_spk_pa, on);
+
+ return 0;
+}
+static const struct snd_soc_dapm_widget sirf_audio_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Hp", sirf_audio_hp_event),
+ SND_SOC_DAPM_SPK("Ext Spk", sirf_audio_spk_event),
+ SND_SOC_DAPM_MIC("Ext Mic", NULL),
+};
+
+static const struct snd_soc_dapm_route intercon[] = {
+ {"Hp", NULL, "HPOUTL"},
+ {"Hp", NULL, "HPOUTR"},
+ {"Ext Spk", NULL, "SPKOUT"},
+ {"MICIN1", NULL, "Mic Bias"},
+ {"Mic Bias", NULL, "Ext Mic"},
+};
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link sirf_audio_dai_link[] = {
+ {
+ .name = "SiRF audio card",
+ .stream_name = "SiRF audio HiFi",
+ .codec_dai_name = "sirf-audio-codec",
+ },
+};
+
+/* Audio machine driver */
+static struct snd_soc_card snd_soc_sirf_audio_card = {
+ .name = "SiRF audio card",
+ .owner = THIS_MODULE,
+ .dai_link = sirf_audio_dai_link,
+ .num_links = ARRAY_SIZE(sirf_audio_dai_link),
+ .dapm_widgets = sirf_audio_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(sirf_audio_dapm_widgets),
+ .dapm_routes = intercon,
+ .num_dapm_routes = ARRAY_SIZE(intercon),
+};
+
+static int sirf_audio_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_soc_sirf_audio_card;
+ struct sirf_audio_card *sirf_audio_card;
+ int ret;
+
+ sirf_audio_card = devm_kzalloc(&pdev->dev, sizeof(struct sirf_audio_card),
+ GFP_KERNEL);
+ if (sirf_audio_card == NULL)
+ return -ENOMEM;
+
+ sirf_audio_dai_link[0].cpu_of_node =
+ of_parse_phandle(pdev->dev.of_node, "sirf,audio-platform", 0);
+ sirf_audio_dai_link[0].platform_of_node =
+ of_parse_phandle(pdev->dev.of_node, "sirf,audio-platform", 0);
+ sirf_audio_dai_link[0].codec_of_node =
+ of_parse_phandle(pdev->dev.of_node, "sirf,audio-codec", 0);
+ sirf_audio_card->gpio_spk_pa = of_get_named_gpio(pdev->dev.of_node,
+ "spk-pa-gpios", 0);
+ sirf_audio_card->gpio_hp_pa = of_get_named_gpio(pdev->dev.of_node,
+ "hp-pa-gpios", 0);
+ if (gpio_is_valid(sirf_audio_card->gpio_spk_pa)) {
+ ret = devm_gpio_request_one(&pdev->dev,
+ sirf_audio_card->gpio_spk_pa,
+ GPIOF_OUT_INIT_LOW, "SPA_PA_SD");
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to request GPIO_%d for reset: %d\n",
+ sirf_audio_card->gpio_spk_pa, ret);
+ return ret;
+ }
+ }
+ if (gpio_is_valid(sirf_audio_card->gpio_hp_pa)) {
+ ret = devm_gpio_request_one(&pdev->dev,
+ sirf_audio_card->gpio_hp_pa,
+ GPIOF_OUT_INIT_LOW, "HP_PA_SD");
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to request GPIO_%d for reset: %d\n",
+ sirf_audio_card->gpio_hp_pa, ret);
+ return ret;
+ }
+ }
+
+ card->dev = &pdev->dev;
+ snd_soc_card_set_drvdata(card, sirf_audio_card);
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
+
+ return ret;
+}
+
+static const struct of_device_id sirf_audio_of_match[] = {
+ {.compatible = "sirf,sirf-audio-card", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, sirf_audio_of_match);
+
+static struct platform_driver sirf_audio_driver = {
+ .driver = {
+ .name = "sirf-audio-card",
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = sirf_audio_of_match,
+ },
+ .probe = sirf_audio_probe,
+};
+module_platform_driver(sirf_audio_driver);
+
+MODULE_AUTHOR("RongJun Ying <RongJun.Ying at csr.com>");
+MODULE_DESCRIPTION("ALSA SoC SIRF audio card driver");
+MODULE_LICENSE("GPL v2");
--
1.7.5.4
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