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@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@pengutronix.de"); +MODULE_DESCRIPTION("Freescale i.MX ssm2603 ASoC machine driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:imx-ssm2603");