[alsa-devel] [PATCH 5/6] ASoC: sirf-inner: add mach driver for SiRFSoC internal codec

Barry Song 21cnbao at gmail.com
Fri Jul 19 13:07:21 CEST 2013


From: Rongjun Ying <Rongjun.Ying at csr.com>

This connects DMA, CPU DAI and Codec DAI together and works
as a mach driver.

Signed-off-by: Rongjun Ying <Rongjun.Ying at csr.com>
Signed-off-by: Barry Song <Baohua.Song at csr.com>
---
 sound/soc/sirf/Kconfig      |   7 +-
 sound/soc/sirf/Makefile     |   2 +
 sound/soc/sirf/sirf-inner.c | 267 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 275 insertions(+), 1 deletion(-)
 create mode 100644 sound/soc/sirf/sirf-inner.c

diff --git a/sound/soc/sirf/Kconfig b/sound/soc/sirf/Kconfig
index 60b8857..ce3c025 100644
--- a/sound/soc/sirf/Kconfig
+++ b/sound/soc/sirf/Kconfig
@@ -2,7 +2,7 @@ config SND_SIRF_SOC
 	tristate "Platform DMA driver for the SiRF SoC chips"
 	depends on ARCH_SIRF && SND_SOC
 	select SND_SOC_DMAENGINE_PCM
-
+	
 config SND_SOC_SIRF_I2S
 	tristate
 
@@ -11,3 +11,8 @@ config SND_SIRF_SOC_INNER
 
 config SND_SOC_SIRF_USP
 	tristate
+
+config SND_SIRF_INNER
+	tristate "SoC Audio support for SiRF inner codec of SiRF EVB"
+	depends on SND_SIRF_SOC
+	select SND_SIRF_SOC_INNER
diff --git a/sound/soc/sirf/Makefile b/sound/soc/sirf/Makefile
index 8517c67..80abdf6 100644
--- a/sound/soc/sirf/Makefile
+++ b/sound/soc/sirf/Makefile
@@ -1,9 +1,11 @@
 snd-soc-sirf-objs := sirf-pcm.o
+snd-soc-sirf-inner-objs := sirf-inner.o
 snd-soc-sirf-soc-inner-objs := sirf-soc-inner.o
 snd-soc-sirf-i2s-objs := sirf-i2s.o
 snd-soc-sirf-usp-objs := sirf-usp.o
 
 obj-$(CONFIG_SND_SIRF_SOC) += snd-soc-sirf.o
+obj-$(CONFIG_SND_SIRF_INNER) += snd-soc-sirf-inner.o
 obj-$(CONFIG_SND_SIRF_SOC_INNER) += snd-soc-sirf-soc-inner.o
 obj-$(CONFIG_SND_SOC_SIRF_I2S) += snd-soc-sirf-i2s.o
 obj-$(CONFIG_SND_SOC_SIRF_USP) += snd-soc-sirf-usp.o
diff --git a/sound/soc/sirf/sirf-inner.c b/sound/soc/sirf/sirf-inner.c
new file mode 100644
index 0000000..a8f2765
--- /dev/null
+++ b/sound/soc/sirf/sirf-inner.c
@@ -0,0 +1,267 @@
+/*
+ * SiRF inner audio device 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>
+#include <sound/jack.h>
+
+struct sirf_inner_card {
+	unsigned int            gpio_hp_pa;
+	unsigned int            gpio_spk_pa;
+	/*
+	 * Android platform uses switch gpio instead of jack.
+	 */
+#ifndef CONFIG_ANDROID
+	unsigned int            gpio_hp_detect;
+	struct snd_soc_jack     hp_jack;
+#endif
+};
+
+#ifndef CONFIG_ANDROID
+static int sirf_inner_jack_status_check(void);
+
+static struct snd_soc_jack_gpio hp_jack_gpios[] = {
+	{
+		.name = "hpdet-gpio",
+		.report = SND_JACK_HEADPHONE,
+		.debounce_time = 200,
+		.jack_status_check = sirf_inner_jack_status_check,
+	},
+};
+
+static int sirf_inner_jack_status_check(void)
+{
+	int spk_out = 0;
+	struct snd_soc_codec *codec = hp_jack_gpios[0].jack->codec;
+	struct snd_soc_card *card = codec->card;
+	struct sirf_inner_card *sinner_card = snd_soc_card_get_drvdata(card);
+	int hp_report = 0;
+
+	if (gpio_is_valid(sinner_card->gpio_hp_detect))
+		spk_out = gpio_get_value(sinner_card->gpio_hp_detect);
+
+	if (gpio_is_valid(sinner_card->gpio_hp_pa))
+		gpio_direction_output(sinner_card->gpio_hp_pa, !spk_out);
+
+	if (gpio_is_valid(sinner_card->gpio_spk_pa))
+		gpio_direction_output(sinner_card->gpio_spk_pa, spk_out);
+
+	if (!spk_out)
+		hp_report |= SND_JACK_HEADPHONE;
+
+	return hp_report;
+}
+
+static int sirf_inner_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_card *card = codec->card;
+	struct sirf_inner_card *sinner_card = snd_soc_card_get_drvdata(card);
+	int ret;
+	hp_jack_gpios[0].gpio = sinner_card->gpio_hp_detect;
+	ret = snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
+			&sinner_card->hp_jack);
+	if (ret)
+		return ret;
+	return snd_soc_jack_add_gpios(&sinner_card->hp_jack,
+			ARRAY_SIZE(hp_jack_gpios),
+			hp_jack_gpios);
+}
+#endif
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link sirf_inner_dai_links[] = {
+	{
+		.name = "SiRF inner",
+		.stream_name = "SiRF inner",
+		.codec_dai_name = "sirf-soc-inner",
+#ifndef CONFIG_ANDROID
+		.init = sirf_inner_init,
+#endif
+	},
+};
+
+static int sirf_inner_headphone_out_get(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_value *ucontrol)
+{
+	int hp_out = 0;
+	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct snd_soc_card *card = codec->card;
+	struct sirf_inner_card *sinner_card = snd_soc_card_get_drvdata(card);
+
+	if (gpio_is_valid(sinner_card->gpio_hp_pa))
+		hp_out = gpio_get_value(sinner_card->gpio_hp_pa);
+
+	*ucontrol->value.integer.value = hp_out;
+	return 0;
+}
+
+static int sirf_inner_headphone_out_put(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_value *ucontrol)
+{
+	int is_hp_out = ucontrol->value.integer.value[0];
+	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct snd_soc_card *card = codec->card;
+	struct sirf_inner_card *sinner_card = snd_soc_card_get_drvdata(card);
+
+	if (gpio_is_valid(sinner_card->gpio_hp_pa))
+		gpio_direction_output(sinner_card->gpio_hp_pa, is_hp_out);
+
+	return 0;
+}
+
+static int sirf_inner_speaker_out_get(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_value *ucontrol)
+{
+	int spk_out = 0;
+	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct snd_soc_card *card = codec->card;
+	struct sirf_inner_card *sinner_card = snd_soc_card_get_drvdata(card);
+
+	if (gpio_is_valid(sinner_card->gpio_spk_pa))
+		spk_out = gpio_get_value(sinner_card->gpio_spk_pa);
+
+	*ucontrol->value.integer.value = spk_out;
+	return 0;
+}
+
+static int sirf_inner_speaker_out_put(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_value *ucontrol)
+{
+	int is_spk_out = ucontrol->value.integer.value[0];
+	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct snd_soc_card *card = codec->card;
+	struct sirf_inner_card *sinner_card = snd_soc_card_get_drvdata(card);
+
+	if (gpio_is_valid(sinner_card->gpio_spk_pa))
+		gpio_direction_output(sinner_card->gpio_spk_pa, is_spk_out);
+	return 0;
+}
+
+static int sirf_inner_speaker_out_info(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_info *uinfo)
+{
+	return 0;
+}
+
+static int sirf_inner_headphone_out_info(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_info *uinfo)
+{
+	return 0;
+}
+
+static struct snd_kcontrol_new snd_sirf_inner_out_route_controls[] = {
+	{
+		.iface          =       SNDRV_CTL_ELEM_IFACE_MIXER,
+		.name           =       "Speaker Out",
+		.index          =       0,
+		.access         =       SNDRV_CTL_ELEM_ACCESS_READWRITE,
+		.info           =	sirf_inner_speaker_out_info,
+		.get            =       sirf_inner_speaker_out_get,
+		.put            =       sirf_inner_speaker_out_put,
+	}, {
+		.iface          =       SNDRV_CTL_ELEM_IFACE_MIXER,
+		.name           =       "Headphone Out",
+		.index          =       0,
+		.access         =       SNDRV_CTL_ELEM_ACCESS_READWRITE,
+		.info           =	sirf_inner_headphone_out_info,
+		.get            =       sirf_inner_headphone_out_get,
+		.put            =       sirf_inner_headphone_out_put,
+	},
+};
+
+/* Audio machine driver */
+static struct snd_soc_card snd_soc_sirf_inner_card = {
+	.name = "SiRF inner",
+	.owner = THIS_MODULE,
+	.dai_link = sirf_inner_dai_links,
+	.num_links = ARRAY_SIZE(sirf_inner_dai_links),
+	.controls = snd_sirf_inner_out_route_controls,
+	.num_controls = ARRAY_SIZE(snd_sirf_inner_out_route_controls),
+};
+
+static int sirf_inner_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &snd_soc_sirf_inner_card;
+	struct sirf_inner_card *sinner_card;
+	sinner_card = devm_kzalloc(&pdev->dev, sizeof(struct sirf_inner_card),
+			GFP_KERNEL);
+	if (sinner_card == NULL)
+		return -ENOMEM;
+
+	sirf_inner_dai_links[0].platform_of_node =
+		of_find_compatible_node(NULL, NULL, "sirf,pcm-audio");
+	sirf_inner_dai_links[0].cpu_of_node =
+		of_parse_phandle(pdev->dev.of_node, "sirf,inner-platform", 0);
+	sirf_inner_dai_links[0].codec_of_node =
+		of_parse_phandle(pdev->dev.of_node, "sirf,inner-codec", 0);
+	sinner_card->gpio_spk_pa = of_get_named_gpio(pdev->dev.of_node,
+			"spk-pa-gpios", 0);
+	sinner_card->gpio_hp_pa =  of_get_named_gpio(pdev->dev.of_node,
+			"hp-pa-gpios", 0);
+#ifndef CONFIG_ANDROID
+	sinner_card->gpio_hp_detect = of_get_named_gpio(pdev->dev.of_node,
+			"hp-switch-gpios", 0);
+#endif
+	if (gpio_is_valid(sinner_card->gpio_spk_pa))
+		gpio_request(sinner_card->gpio_spk_pa, "SPA_PA_SD");
+	if (gpio_is_valid(sinner_card->gpio_hp_pa))
+		gpio_request(sinner_card->gpio_hp_pa, "HP_PA_SD");
+
+	card->dev = &pdev->dev;
+	snd_soc_card_set_drvdata(card, sinner_card);
+	platform_set_drvdata(pdev, card);
+	if (gpio_is_valid(sinner_card->gpio_hp_pa))
+		gpio_direction_output(sinner_card->gpio_hp_pa, 0);
+	if (gpio_is_valid(sinner_card->gpio_spk_pa))
+		gpio_direction_output(sinner_card->gpio_spk_pa, 0);
+
+	return snd_soc_register_card(card);
+}
+
+static int sirf_inner_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct sirf_inner_card *sinner_card = snd_soc_card_get_drvdata(card);
+
+	if (gpio_is_valid(sinner_card->gpio_hp_pa))
+		gpio_free(sinner_card->gpio_hp_pa);
+	if (gpio_is_valid(sinner_card->gpio_spk_pa))
+		gpio_free(sinner_card->gpio_spk_pa);
+
+	snd_soc_unregister_card(card);
+	return 0;
+}
+
+static const struct of_device_id sirf_inner_of_match[] = {
+	{.compatible = "sirf,sirf-inner-audio", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, sirf_inner_of_match);
+
+static struct platform_driver sirf_inner_driver = {
+	.driver = {
+		.name = "sirf-inner-audio",
+		.owner = THIS_MODULE,
+		.of_match_table = sirf_inner_of_match,
+	},
+	.probe = sirf_inner_probe,
+	.remove = sirf_inner_remove,
+};
+module_platform_driver(sirf_inner_driver);
+
+MODULE_AUTHOR("RongJun Ying <RongJun.Ying at csr.com>");
+MODULE_DESCRIPTION("ALSA SoC SIRF inner AUDIO driver");
+MODULE_LICENSE("GPL v2");
-- 
1.8.2.3



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