[alsa-devel] [PATCH v6] ASoC: imx-wm8958: add imx-wm8958 machine driver
Zidan Wang
zidan.wang at freescale.com
Wed Mar 16 08:02:14 CET 2016
This is an initial imx-wm8958 device-tree-only machine driver.
The sound card driver support three dai link, AIF1-DAI, AIF2-DAI
and AIF3-DAI. We can configure the cpu dai from device tree,
if present it will create corresponding sound card subdevice.
At least one cpu dai phandle should be set from device tree.
Signed-off-by: Zidan Wang <zidan.wang at freescale.com>
Acked-by: Nicolin Chen <nicoleotsuka at gmail.com>
---
v5->v6: some header files should be moved to the next patch. So remove it.
.../devicetree/bindings/sound/imx-audio-wm8958.txt | 69 +++++
sound/soc/fsl/Kconfig | 14 +
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/imx-wm8958.c | 325 +++++++++++++++++++++
4 files changed, 410 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/imx-audio-wm8958.txt
create mode 100644 sound/soc/fsl/imx-wm8958.c
diff --git a/Documentation/devicetree/bindings/sound/imx-audio-wm8958.txt b/Documentation/devicetree/bindings/sound/imx-audio-wm8958.txt
new file mode 100644
index 0000000..7978c62
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/imx-audio-wm8958.txt
@@ -0,0 +1,69 @@
+Freescale i.MX audio complex with WM8958 codec
+
+Required properties:
+
+ - compatible : "fsl,imx-audio-wm8958"
+
+ - model : The user-visible name of this sound complex
+
+ - audio-codec : The phandle of the WM8958 audio codec
+
+ - audio-routing : A list of the connections between audio components.
+ Each entry is a pair of strings, the first being
+ the connection's sink, the second being the
+ connection's source. Valid names could be power
+ supplies, WM8958 pins, and the jacks on the board:
+
+ Power supplies:
+ * MICBIAS1
+ * MICBIAS2
+
+ Board connectors:
+ * Headphone Jack
+ * Ext Spk
+
+Optional properties:
+
+ - cpu-dai1 : The phandle of CPU DAI1 controller, which is for
+ aif1 of wm8958. At least one cpu dai is required.
+
+ - cpu-dai2 : The phandle of CPU DAI2 controller, which is for
+ aif2 of wm8958. At least one cpu dai is required.
+
+ - cpu-dai3 : The phandle of CPU DAI3 controller, which is for
+ aif3 of wm8958. At least one cpu dai is required.
+
+ - dai-link1-name : If present, set the dai link1 name and stream name
+ to the specific strings. Otherwise, set the dai
+ link1 name and stream name to "AIF1-DAI".
+
+ - dai-link2-name : If present, set the dai link2 name and stream name
+ to the specific strings. Otherwise, set the dai
+ link2 name and stream name to "AIF2-DAI".
+
+ - dai-link3-name : If present, set the dai link3 name and stream name
+ to the specific strings. Otherwise, set the dai
+ link3 name and stream name to "AIF3-DAI".
+
+ - fsl,cpu-dai1-master : If present, cpu dai1 works as master, and will
+ provide bit clock and frame clock. Otherwise,
+ cpu dai1 works as slave.
+
+Example:
+
+sound {
+ compatible = "fsl,imx6ul-ddr3-arm2-wm8958",
+ "fsl,imx-audio-wm8958";
+ model = "wm8958-audio";
+ cpu-dai1 = <&sai1>;
+ dai-link1-name = "Hifi";
+ audio-codec = <&codec>;
+ audio-routing =
+ "Headphone Jack", "HPOUT1L",
+ "Headphone Jack", "HPOUT1R",
+ "Ext Spk", "SPKOUTLP",
+ "Ext Spk", "SPKOUTLN",
+ "Ext Spk", "SPKOUTRP",
+ "Ext Spk", "SPKOUTRN",
+ "IN1LN", "MICBIAS2";
+};
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 35aabf9..f6e5d96 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -229,6 +229,20 @@ config SND_SOC_EUKREA_TLV320
Enable I2S based access to the TLV320AIC23B codec attached
to the SSI interface
+config SND_SOC_IMX_WM8958
+ tristate "SoC Audio support for i.MX boards with wm8958"
+ depends on OF && I2C
+ select MFD_WM8994
+ select SND_SOC_WM8994
+ select SND_SOC_IMX_PCM_DMA
+ select SND_SOC_FSL_SAI
+ select SND_SOC_FSL_UTILS
+ select SND_KCTL_JACK
+ help
+ SoC Audio support for i.MX boards with WM8958
+ Say Y if you want to add support for SoC audio on an i.MX board with
+ a wm8958 codec.
+
config SND_SOC_IMX_WM8962
tristate "SoC Audio support for i.MX boards with wm8962"
depends on OF && I2C && INPUT
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index d28dc25..2a781c0 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -54,6 +54,7 @@ snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o
snd-soc-wm1133-ev1-objs := wm1133-ev1.o
snd-soc-imx-es8328-objs := imx-es8328.o
snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o
+snd-soc-imx-wm8958-objs := imx-wm8958.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
@@ -64,6 +65,7 @@ obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o
obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o
obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o
+obj-$(CONFIG_SND_SOC_IMX_WM8958) += snd-soc-imx-wm8958.o
obj-$(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-wm8958.c b/sound/soc/fsl/imx-wm8958.c
new file mode 100644
index 0000000..5ac200e
--- /dev/null
+++ b/sound/soc/fsl/imx-wm8958.c
@@ -0,0 +1,325 @@
+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ *
+ * 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/module.h>
+#include <linux/of_platform.h>
+#include <linux/i2c.h>
+#include <linux/clk.h>
+#include <sound/soc.h>
+#include <sound/control.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <linux/mfd/wm8994/registers.h>
+#include "../codecs/wm8994.h"
+
+#define DAI_NAME_SIZE 32
+
+#define DAI_LINK_NUM (3)
+#define AIF1_DAI (0)
+#define AIF2_DAI (1)
+#define AIF3_DAI (2)
+
+#define WM8958_MCLK_MAX (2)
+
+#define WM8994_FLL(id) (id == AIF1_DAI ? WM8994_FLL1 : WM8994_FLL2)
+#define WM8994_SYSCLK_FLL(id) (id == AIF1_DAI ? WM8994_SYSCLK_FLL1 : WM8994_SYSCLK_FLL2)
+#define WM8994_FLL_SRC_MCLK(id) (id == AIF1_DAI ? WM8994_FLL_SRC_MCLK1 : WM8994_FLL_SRC_MCLK2)
+
+struct imx_wm8958_data {
+ struct snd_soc_dai_link dai_link[DAI_LINK_NUM];
+ struct snd_soc_card card;
+ unsigned long mclk_freq[WM8958_MCLK_MAX];
+ bool is_cpu_dai1_master;
+ bool is_stream_in_use[DAI_LINK_NUM][2];
+};
+
+static const struct snd_soc_dapm_widget imx_wm8958_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+static int imx_wm8958_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_card *card = rtd->card;
+ struct device *dev = card->dev;
+ struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card);
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ bool hifi_dai_sysclk_dir = SND_SOC_CLOCK_OUT;
+ u32 mclk_id, id = codec_dai->id - 1;
+ u32 pll_out;
+ int ret;
+
+ data->is_stream_in_use[id][tx] = true;
+
+ if (data->mclk_freq[id])
+ mclk_id = WM8994_FLL_SRC_MCLK(id);
+ else if (id == AIF1_DAI)
+ mclk_id = WM8994_FLL_SRC_MCLK2;
+ else
+ mclk_id = WM8994_FLL_SRC_MCLK1;
+
+ if (id == AIF1_DAI) {
+ if (data->is_cpu_dai1_master)
+ hifi_dai_sysclk_dir = SND_SOC_CLOCK_IN;
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai,
+ 0, 0, !hifi_dai_sysclk_dir);
+
+ if (ret) {
+ dev_err(dev, "failed to set cpu sysclk: %d\n", ret);
+ return ret;
+ }
+
+ if (data->is_cpu_dai1_master) {
+ ret = snd_soc_dai_set_sysclk(codec_dai, mclk_id,
+ data->mclk_freq[mclk_id - 1],
+ hifi_dai_sysclk_dir);
+ if (ret) {
+ dev_err(dev,
+ "failed to set codec sysclk: %d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+ }
+ }
+
+ if (params_width(params) == 24)
+ pll_out = params_rate(params) * 384;
+ else
+ pll_out = params_rate(params) * 256;
+
+ ret = snd_soc_dai_set_pll(codec_dai,
+ WM8994_FLL(id),
+ mclk_id,
+ data->mclk_freq[mclk_id - 1],
+ pll_out);
+ if (ret) {
+ dev_err(dev, "failed to set codec pll: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai,
+ WM8994_SYSCLK_FLL(id),
+ pll_out,
+ SND_SOC_CLOCK_OUT);
+ if (ret) {
+ dev_err(dev, "failed to set codec sysclk: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int imx_wm8958_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_card *card = rtd->card;
+ struct imx_wm8958_data *data = snd_soc_card_get_drvdata(card);
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ int id = codec_dai->id - 1;
+
+ data->is_stream_in_use[id][tx] = false;
+
+ if (id == AIF1_DAI && data->is_cpu_dai1_master)
+ return 0;
+
+ if (!data->is_stream_in_use[id][!tx]) {
+ /*
+ * We should connect AIFxCLK source to FLL after enable FLL,
+ * and disconnect AIF1CLK source to FLL before disable FLL,
+ * otherwise FLL worked abnormal.
+ */
+ snd_soc_dai_set_sysclk(codec_dai, WM8994_FLL_SRC_MCLK(id),
+ data->mclk_freq[id], SND_SOC_CLOCK_OUT);
+
+ /* Disable FLL1 after all stream finished. */
+ snd_soc_dai_set_pll(codec_dai, WM8994_FLL(id), 0, 0, 0);
+ }
+
+ return 0;
+}
+
+static struct snd_soc_ops imx_wm8958_ops = {
+ .hw_params = imx_wm8958_hw_params,
+ .hw_free = imx_wm8958_hw_free,
+};
+
+static struct snd_soc_dai_link imx_wm8958_dai_link[] = {
+ [AIF1_DAI] = {
+ .name = "AIF1-DAI",
+ .stream_name = "AIF1-DAI",
+ .codec_name = "wm8994-codec",
+ .codec_dai_name = "wm8994-aif1",
+ .ops = &imx_wm8958_ops,
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF,
+ },
+ [AIF2_DAI] = {
+ .name = "AIF2-DAI",
+ .stream_name = "AIF2-DAI",
+ .codec_name = "wm8994-codec",
+ .codec_dai_name = "wm8994-aif2",
+ .ops = &imx_wm8958_ops,
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ },
+ [AIF3_DAI] = {
+ .name = "AIF3-DAI",
+ .stream_name = "AIF3-DAI",
+ .codec_name = "wm8994-codec",
+ .codec_dai_name = "wm8994-aif3",
+ },
+};
+
+static int imx_wm8958_probe(struct platform_device *pdev)
+{
+ struct device_node *cpu_np[DAI_LINK_NUM], *codec_np;
+ struct device_node *np = pdev->dev.of_node;
+ struct platform_device *cpu_pdev[DAI_LINK_NUM];
+ struct i2c_client *codec_dev;
+ struct imx_wm8958_data *data;
+ struct clk *mclk;
+ char tmp[8], *name;
+ int num_links = 0;
+ int ret, i;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ for (i = 0; i < DAI_LINK_NUM; i++) {
+ sprintf(tmp, "cpu-dai%d", i + 1);
+ cpu_np[i] = of_parse_phandle(np, tmp, 0);
+ if (!cpu_np[i])
+ continue;
+
+ cpu_pdev[i] = of_find_device_by_node(cpu_np[i]);
+ if (!cpu_pdev[i]) {
+ dev_err(&pdev->dev,
+ "failed to get cpu dai%d platform device\n", i);
+ ret = -EINVAL;
+ goto fail;
+ }
+ data->dai_link[num_links] = imx_wm8958_dai_link[i];
+ data->dai_link[num_links].cpu_dai_name = dev_name(&cpu_pdev[i]->dev);
+ data->dai_link[num_links].platform_of_node = cpu_np[i];
+
+ sprintf(tmp, "dai-link%d-name", i + 1);
+ if(!of_property_read_string(np, tmp, (const char **)&name)) {
+ data->dai_link[num_links].name = name;
+ data->dai_link[num_links].stream_name = name;
+ }
+ num_links++;
+ }
+
+ if (!num_links) {
+ dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ codec_np = of_parse_phandle(np, "audio-codec", 0);
+ if (!codec_np) {
+ dev_err(&pdev->dev, "phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ codec_dev = of_find_i2c_device_by_node(codec_np);
+ if (!codec_dev || !codec_dev->dev.driver) {
+ dev_err(&pdev->dev, "failed to find codec platform device\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /* cpu dai1 link support cpu dai master and slave mode */
+ if (of_property_read_bool(np, "fsl,cpu-dai1-master")) {
+ data->is_cpu_dai1_master = true;
+ data->dai_link[AIF1_DAI].dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
+ } else {
+ data->is_cpu_dai1_master = false;
+ data->dai_link[AIF1_DAI].dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
+ }
+
+ for (i = 0; i < WM8958_MCLK_MAX; i++) {
+ sprintf(tmp, "MCLK%d", i + 1);
+ mclk = devm_clk_get(&codec_dev->dev, tmp);
+ if (!IS_ERR(mclk))
+ data->mclk_freq[i] = clk_get_rate(mclk);
+ }
+
+ if (!data->mclk_freq[0] && !data->mclk_freq[1]) {
+ dev_err(&pdev->dev, "failed to get mclk clock\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ data->card.dev = &pdev->dev;
+ ret = snd_soc_of_parse_card_name(&data->card, "model");
+ if (ret)
+ goto fail;
+
+ data->card.num_links = num_links;
+ data->card.dai_link = data->dai_link;
+ data->card.dapm_widgets = imx_wm8958_dapm_widgets;
+ data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8958_dapm_widgets);
+ data->card.owner = THIS_MODULE;
+
+ ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
+ if (ret)
+ goto fail;
+
+ platform_set_drvdata(pdev, &data->card);
+ snd_soc_card_set_drvdata(&data->card, data);
+
+ 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;
+ }
+
+fail:
+ of_node_put(cpu_np[AIF1_DAI]);
+ of_node_put(cpu_np[AIF2_DAI]);
+ of_node_put(cpu_np[AIF3_DAI]);
+ of_node_put(codec_np);
+
+ return ret;
+}
+
+static const struct of_device_id imx_wm8958_dt_ids[] = {
+ { .compatible = "fsl,imx-audio-wm8958", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_wm8958_dt_ids);
+
+static struct platform_driver imx_wm8958_driver = {
+ .driver = {
+ .name = "imx-wm8958",
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = imx_wm8958_dt_ids,
+ },
+ .probe = imx_wm8958_probe,
+};
+module_platform_driver(imx_wm8958_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("Freescale i.MX WM8958 ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-wm8958");
--
1.9.1
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