| /* |
| * 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 <sound/soc.h> |
| |
| #include "../codecs/sgtl5000.h" |
| #include "imx-audmux.h" |
| |
| #define DAI_NAME_SIZE 32 |
| |
| struct imx_sgtl5000_data { |
| struct snd_soc_dai_link dai; |
| struct snd_soc_card card; |
| char codec_dai_name[DAI_NAME_SIZE]; |
| char platform_name[DAI_NAME_SIZE]; |
| unsigned int clk_frequency; |
| }; |
| |
| static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct imx_sgtl5000_data *data = container_of(rtd->card, |
| struct imx_sgtl5000_data, card); |
| struct device *dev = rtd->card->dev; |
| int ret; |
| |
| ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_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 __devinit imx_sgtl5000_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 imx_sgtl5000_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_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; |
| } |
| imx_audmux_v2_configure_port(ext_port, |
| IMX_AUDMUX_V2_PTCR_SYN | |
| IMX_AUDMUX_V2_PTCR_TCSEL(int_port), |
| 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"); |
| return -EINVAL; |
| } |
| |
| ssi_pdev = of_find_device_by_node(ssi_np); |
| if (!ssi_pdev) { |
| dev_err(&pdev->dev, "failed to find SSI platform device\n"); |
| return -EINVAL; |
| } |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| |
| ret = of_property_read_u32(codec_np, "clock-frequency", |
| &data->clk_frequency); |
| if (ret) { |
| dev_err(&pdev->dev, "clock-frequency missing or invalid\n"); |
| return ret; |
| } |
| |
| data->dai.name = "HiFi"; |
| data->dai.stream_name = "HiFi"; |
| data->dai.codec_dai_name = "sgtl5000"; |
| data->dai.codec_of_node = codec_np; |
| data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev); |
| data->dai.platform_name = "imx-pcm-audio"; |
| data->dai.init = &imx_sgtl5000_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) |
| return ret; |
| data->card.num_links = 1; |
| data->card.dai_link = &data->dai; |
| |
| ret = snd_soc_register_card(&data->card); |
| if (ret) { |
| dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); |
| return ret; |
| } |
| |
| platform_set_drvdata(pdev, data); |
| of_node_put(ssi_np); |
| of_node_put(codec_np); |
| |
| return 0; |
| } |
| |
| static int __devexit imx_sgtl5000_remove(struct platform_device *pdev) |
| { |
| struct imx_sgtl5000_data *data = platform_get_drvdata(pdev); |
| |
| snd_soc_unregister_card(&data->card); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id imx_sgtl5000_dt_ids[] = { |
| { .compatible = "fsl,imx-audio-sgtl5000", }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids); |
| |
| static struct platform_driver imx_sgtl5000_driver = { |
| .driver = { |
| .name = "imx-sgtl5000", |
| .owner = THIS_MODULE, |
| .of_match_table = imx_sgtl5000_dt_ids, |
| }, |
| .probe = imx_sgtl5000_probe, |
| .remove = __devexit_p(imx_sgtl5000_remove), |
| }; |
| module_platform_driver(imx_sgtl5000_driver); |
| |
| MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>"); |
| MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:imx-sgtl5000"); |