[alsa-devel] [PATCH v2 2/2] ASoC: fsl: add imx-ssm2603 machine driver
Philipp Zabel
p.zabel at pengutronix.de
Thu Jan 30 10:44:18 CET 2014
This adds support for i.MX boards with Analog Devices SSM2603 codecs
connected via I2S with separate Tx and Rx clocks.
Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>
---
Changes since v1:
- Fix return value in devm_clk_get error path
- Use devm_snd_soc_register_card
- Don't select FSL_UTILS
---
sound/soc/fsl/Kconfig | 11 ++
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/imx-ssm2603.c | 237 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 250 insertions(+)
create mode 100644 sound/soc/fsl/imx-ssm2603.c
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index b7ab71f..8dfe60f 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -212,4 +212,15 @@ config SND_SOC_IMX_MC13783
select SND_SOC_MC13783
select SND_SOC_IMX_PCM_DMA
+config SND_SOC_IMX_SSM2603
+ tristate "SoC Audio support for i.MX boards with ssm2603"
+ depends on OF && I2C
+ select SND_SOC_SSM2602
+ select SND_SOC_IMX_PCM_DMA
+ select SND_SOC_IMX_AUDMUX
+ select SND_SOC_FSL_SSI
+ help
+ Say Y if you want to add support for SoC audio on an i.MX board with
+ a ssm2603 codec.
+
endif # SND_IMX_SOC
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index 8db705b..e3b0faf 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -44,6 +44,7 @@ snd-soc-phycore-ac97-objs := phycore-ac97.o
snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o
snd-soc-wm1133-ev1-objs := wm1133-ev1.o
snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o
+snd-soc-imx-ssm2603-objs := imx-ssm2603.o
snd-soc-imx-wm8962-objs := imx-wm8962.o
snd-soc-imx-spdif-objs := imx-spdif.o
snd-soc-imx-mc13783-objs := imx-mc13783.o
@@ -53,6 +54,7 @@ obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o
obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o
obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o
+obj-$(CONFIG_SND_SOC_IMX_SSM2603) += snd-soc-imx-ssm2603.o
obj-$(CONFIG_SND_SOC_IMX_WM8962) += snd-soc-imx-wm8962.o
obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
obj-$(CONFIG_SND_SOC_IMX_MC13783) += snd-soc-imx-mc13783.o
diff --git a/sound/soc/fsl/imx-ssm2603.c b/sound/soc/fsl/imx-ssm2603.c
new file mode 100644
index 0000000..2a51b01
--- /dev/null
+++ b/sound/soc/fsl/imx-ssm2603.c
@@ -0,0 +1,237 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012 Linaro Ltd.
+ * Copyright 2013 Philipp Zabel, Pengutronix
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/clk.h>
+#include <sound/soc.h>
+
+#include "../codecs/ssm2602.h"
+#include "imx-audmux.h"
+
+#define DAI_NAME_SIZE 32
+
+struct imx_ssm2603_data {
+ struct snd_soc_dai_link dai;
+ struct snd_soc_card card;
+ struct clk *codec_clk;
+ unsigned int clk_frequency;
+ struct gpio_desc *speaker_en_gpio;
+};
+
+static int imx_ssm2603_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct imx_ssm2603_data *data = container_of(rtd->card,
+ struct imx_ssm2603_data, card);
+ struct device *dev = rtd->card->dev;
+ int ret;
+
+ ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SSM2602_SYSCLK,
+ data->clk_frequency, SND_SOC_CLOCK_IN);
+ if (ret) {
+ dev_err(dev, "could not set codec driver clock params\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int imx_ssm2603_speaker_power(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_dapm_context *dapm = w->dapm;
+ struct snd_soc_card *card = dapm->card;
+ struct imx_ssm2603_data *data = snd_soc_card_get_drvdata(card);
+
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ gpiod_set_value(data->speaker_en_gpio, 1);
+ else
+ gpiod_set_value(data->speaker_en_gpio, 0);
+
+ return 0;
+}
+
+
+static const struct snd_soc_dapm_widget imx_ssm2603_dapm_widgets[] = {
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+ SND_SOC_DAPM_LINE("Line In Jack", NULL),
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_SPK("Line Out Jack", NULL),
+ SND_SOC_DAPM_SPK("Int Spk", imx_ssm2603_speaker_power),
+};
+
+static int imx_ssm2603_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *ssi_np, *codec_np;
+ struct platform_device *ssi_pdev;
+ struct i2c_client *codec_dev;
+ struct imx_ssm2603_data *data;
+ int int_port, ext_port;
+ int ret;
+
+ ret = of_property_read_u32(np, "mux-int-port", &int_port);
+ if (ret) {
+ dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
+ return ret;
+ }
+ ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
+ if (ret) {
+ dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
+ return ret;
+ }
+
+ /*
+ * The port numbering in the hardware manual starts at 1, while
+ * the audmux API expects it starts at 0.
+ */
+ int_port--;
+ ext_port--;
+ ret = imx_audmux_v2_configure_port(int_port,
+ IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
+ IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
+ IMX_AUDMUX_V2_PTCR_RFSEL(ext_port | IMX_AUDMUX_RXFS) |
+ IMX_AUDMUX_V2_PTCR_RCSEL(ext_port | IMX_AUDMUX_RXCLK) |
+ IMX_AUDMUX_V2_PTCR_TFSDIR |
+ IMX_AUDMUX_V2_PTCR_RFSDIR |
+ IMX_AUDMUX_V2_PTCR_TCLKDIR |
+ IMX_AUDMUX_V2_PTCR_RCLKDIR,
+ IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
+ if (ret) {
+ dev_err(&pdev->dev, "audmux internal port setup failed\n");
+ return ret;
+ }
+ ret = imx_audmux_v2_configure_port(ext_port, 0,
+ IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
+ if (ret) {
+ dev_err(&pdev->dev, "audmux external port setup failed\n");
+ return ret;
+ }
+
+ ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
+ codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
+ if (!ssi_np || !codec_np) {
+ dev_err(&pdev->dev, "phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ ssi_pdev = of_find_device_by_node(ssi_np);
+ if (!ssi_pdev) {
+ dev_err(&pdev->dev, "failed to find SSI platform device\n");
+ ret = -EPROBE_DEFER;
+ goto fail;
+ }
+ codec_dev = of_find_i2c_device_by_node(codec_np);
+ if (!codec_dev) {
+ dev_err(&pdev->dev, "failed to find codec platform device\n");
+ return -EPROBE_DEFER;
+ }
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ data->codec_clk = devm_clk_get(&codec_dev->dev, NULL);
+ if (IS_ERR(data->codec_clk)) {
+ ret = PTR_ERR(data->codec_clk);
+ goto fail;
+ }
+
+ data->clk_frequency = clk_get_rate(data->codec_clk);
+
+ data->dai.name = "HiFi";
+ data->dai.stream_name = "HiFi";
+ data->dai.codec_dai_name = "ssm2602-hifi";
+ data->dai.codec_of_node = codec_np;
+ data->dai.cpu_of_node = ssi_np;
+ data->dai.platform_of_node = ssi_np;
+ data->dai.init = &imx_ssm2603_dai_init;
+ data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM;
+
+ data->card.dev = &pdev->dev;
+ ret = snd_soc_of_parse_card_name(&data->card, "model");
+ if (ret)
+ goto fail;
+ ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
+ if (ret)
+ goto fail;
+ data->card.num_links = 1;
+ data->card.owner = THIS_MODULE;
+ data->card.dai_link = &data->dai;
+ data->card.dapm_widgets = imx_ssm2603_dapm_widgets;
+ data->card.num_dapm_widgets = ARRAY_SIZE(imx_ssm2603_dapm_widgets);
+
+ data->speaker_en_gpio = devm_gpiod_get(&pdev->dev, "fsl,spkr-en");
+ if (IS_ERR(data->speaker_en_gpio)) {
+ dev_err(&pdev->dev, "Failed to get fsl,spkr-en-gpios!\n");
+ } else {
+ gpiod_direction_output(data->speaker_en_gpio, 0);
+ /* FIXME */
+ gpiod_set_value(data->speaker_en_gpio, 0);
+ }
+
+ ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ goto fail;
+ }
+
+ platform_set_drvdata(pdev, data);
+ snd_soc_card_set_drvdata(&data->card, data);
+ of_node_put(ssi_np);
+ of_node_put(codec_np);
+
+ return 0;
+
+fail:
+ if (ssi_np)
+ of_node_put(ssi_np);
+ if (codec_np)
+ of_node_put(codec_np);
+
+ return ret;
+}
+
+static int imx_ssm2603_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static const struct of_device_id imx_ssm2603_dt_ids[] = {
+ { .compatible = "fsl,imx-audio-ssm2603", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, imx_ssm2603_dt_ids);
+
+static struct platform_driver imx_ssm2603_driver = {
+ .driver = {
+ .name = "imx-ssm2603",
+ .owner = THIS_MODULE,
+ .of_match_table = imx_ssm2603_dt_ids,
+ },
+ .probe = imx_ssm2603_probe,
+ .remove = imx_ssm2603_remove,
+};
+module_platform_driver(imx_ssm2603_driver);
+
+MODULE_AUTHOR("Philipp Zabel <p.zabel at pengutronix.de>");
+MODULE_DESCRIPTION("Freescale i.MX ssm2603 ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-ssm2603");
--
1.8.5.3
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