This is the initial imx-cs427x device-tree-only machine driver working with fsl_ssi driver. More features can be added on top of it later.

Signed-off-by: Felipe F. Tonello eu@felipetonello.com --- .../devicetree/bindings/sound/imx-audio-cs427x.txt | 47 +++++ sound/soc/fsl/Kconfig | 12 ++ sound/soc/fsl/Makefile | 2 + sound/soc/fsl/imx-cs427x.c | 218 +++++++++++++++++++++ 4 files changed, 279 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/imx-audio-cs427x.txt create mode 100644 sound/soc/fsl/imx-cs427x.c

diff --git a/Documentation/devicetree/bindings/sound/imx-audio-cs427x.txt b/Documentation/devicetree/bindings/sound/imx-audio-cs427x.txt new file mode 100644 index 000000000000..295f60b19418 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/imx-audio-cs427x.txt @@ -0,0 +1,47 @@ +Freescale i.MX audio complex with CS4271 or CS4272 codec + +Required properties: + + - compatible : "fsl,imx-audio-cs427x" + + - model : The user-visible name of this sound complex + + - ssi-controller : The phandle of the i.MX SSI controller + + - audio-codec : The phandle of the CS4271 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, CS427x + pins, and the jacks on the board: + + Board connectors: + * Mic Jack + * Headphone Jack + + - mux-int-port : The internal port of the i.MX audio muxer (AUDMUX) + + - mux-ext-port : The external port of the i.MX audio muxer + +Note: The AUDMUX port numbering should start at 1, which is consistent with +hardware manual. + +Example: + +sound { + compatible = "fsl,imx6-rex-cs427x", + "fsl,imx-audio-cs427x"; + model = "audio-cs427x"; + ssi-controller = <&ssi1>; + audio-codec = <&cs4271>; + audio-routing = + "Mic Jack", "AINA", + "Mic Jack", "AINB", + "Headphone Jack", "AOUTA+", + "Headphone Jack", "AOUTA-", + "Headphone Jack", "AOUTB+", + "Headphone Jack", "AOUTB-"; + mux-int-port = <1>; + mux-ext-port = <3>; +}; diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index 14dfdee05fd5..8696b5c42dd8 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -263,6 +263,18 @@ config SND_SOC_IMX_SGTL5000 Say Y if you want to add support for SoC audio on an i.MX board with a sgtl5000 codec.

+config SND_SOC_IMX_CS427x + tristate "SoC Audio support for i.MX boards with cs4271 or cs4272" + depends on OF && (I2C || SPI) + select SND_SOC_CS4271_I2C if I2C + select SND_SOC_CS4271_SPI if SPI_MASTER + 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 CS4271 or CS4272 codec over either SPI or I2C. + config SND_SOC_IMX_SPDIF tristate "SoC Audio support for i.MX boards with S/PDIF" select SND_SOC_IMX_PCM_DMA diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile index d28dc25c9375..334d183e3a17 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-cs427x-objs := imx-cs427x.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-$(CONFIG_SND_SOC_IMX_CS427x) += snd-soc-imx-cs427x.o obj-$(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-cs427x.c b/sound/soc/fsl/imx-cs427x.c new file mode 100644 index 000000000000..45c56013822b --- /dev/null +++ b/sound/soc/fsl/imx-cs427x.c @@ -0,0 +1,218 @@ +/* + * Copyright 2015 ROLI Ltd. + * Author: Felipe F. Tonello felipe.tonello@roli.com + * + * Based on imx-sgtl5000.c + * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright 2012 Linaro Ltd. + * + * 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.h> +#include <linux/of_platform.h> +#include <linux/i2c.h> +#include <linux/clk.h> +#include <sound/soc.h> + +#include "imx-audmux.h" + +#define CS427x_SYSCLK_MCLK 0 + +struct imx_cs427x_data { + struct snd_soc_dai_link dai; + struct snd_soc_card card; + struct clk *codec_clk; + unsigned int clk_frequency; +}; + +static int imx_cs427x_dai_init(struct snd_soc_pcm_runtime *rtd) +{ + struct imx_cs427x_data *data = snd_soc_card_get_drvdata(rtd->card); + struct device *dev = rtd->card->dev; + int ret; + + ret = snd_soc_dai_set_sysclk(rtd->codec_dai, CS427x_SYSCLK_MCLK, + data->clk_frequency, SND_SOC_CLOCK_IN); + if (ret) + dev_err(dev, "failed to set sysclk\n"); + + return ret; +} + +static const struct snd_soc_dapm_widget imx_cs427x_dapm_widgets[] = { + SND_SOC_DAPM_MIC("Mic Jack", NULL), + SND_SOC_DAPM_HP("Headphone Jack", NULL), +}; + +static int imx_cs427x_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_cs427x_data *data = NULL; + 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_SYN | + IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | + IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) | + IMX_AUDMUX_V2_PTCR_TFSDIR | + IMX_AUDMUX_V2_PTCR_TCLKDIR, + 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, + IMX_AUDMUX_V2_PTCR_SYN, + 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 = -EINVAL; + 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"); + ret = -EINVAL; + goto fail; + } + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto fail; + } + + data->codec_clk = clk_get(&codec_dev->dev, NULL); + if (IS_ERR(data->codec_clk)) { + ret = PTR_ERR(data->codec_clk); + dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret); + goto fail; + } + + data->clk_frequency = clk_get_rate(data->codec_clk); + ret = clk_prepare_enable(data->codec_clk); + if (ret) { + dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret); + goto fail; + } + + data->dai.name = "HiFi"; + data->dai.stream_name = "HiFi"; + data->dai.codec_dai_name = "cs4271-hifi"; + data->dai.codec_of_node = codec_np; + data->dai.cpu_of_node = ssi_np; + data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev); + data->dai.platform_of_node = ssi_np; + data->dai.init = &imx_cs427x_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_cs427x_dapm_widgets; + data->card.num_dapm_widgets = ARRAY_SIZE(imx_cs427x_dapm_widgets); + + 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; + } + + of_node_put(ssi_np); + of_node_put(codec_np); + + return 0; + +fail: + if (data && !IS_ERR(data->codec_clk)) + clk_put(data->codec_clk); + of_node_put(ssi_np); + of_node_put(codec_np); + + return ret; +} + +static int imx_cs427x_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + struct imx_cs427x_data *data = snd_soc_card_get_drvdata(card); + + clk_put(data->codec_clk); + + return 0; +} + +static const struct of_device_id imx_cs427x_dt_ids[] = { + { .compatible = "fsl,imx-audio-cs427x", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_cs427x_dt_ids); + +static struct platform_driver imx_cs427x_driver = { + .driver = { + .name = "imx-cs427x", + .pm = &snd_soc_pm_ops, + .of_match_table = imx_cs427x_dt_ids, + }, + .probe = imx_cs427x_probe, + .remove = imx_cs427x_remove, +}; +module_platform_driver(imx_cs427x_driver); + +MODULE_AUTHOR("Felipe F. Tonello felipe.tonello@roli.com"); +MODULE_DESCRIPTION("Freescale i.MX CS427x ASoC machine driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:imx-cs427x");