// SPDX-License-Identifier: GPL-2.0-or-later /* */ #include #include #include #include #include #include #include #include #include #include #include #include "../codecs/ac102.h" #define MCLK_FREQ 12288000 static int aic_ac102_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0); int ret; ret = snd_soc_dai_set_sysclk(cpu_dai, 0, MCLK_FREQ, 0); if (ret) { dev_err(cpu_dai->dev, "Failed to set MCLK frequency\n"); return ret; } return 0; } static const struct snd_soc_ops aic_ac102_snd_ops = { .hw_params = aic_ac102_hw_params, }; SND_SOC_DAILINK_DEFS(aic_ac102, DAILINK_COMP_ARRAY(COMP_EMPTY()), DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "ac102-dai")), DAILINK_COMP_ARRAY(COMP_EMPTY())); static struct snd_soc_dai_link aic_ac102_dai = { .name = "aic_ac102", .stream_name = "aic_ac102 PCM", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_NB_NF, .ops = &aic_ac102_snd_ops, SND_SOC_DAILINK_REG(aic_ac102), }; static struct snd_soc_card aic_ac102 = { .name = "aic_ac102", .owner = THIS_MODULE, .dai_link = &aic_ac102_dai, .num_links = 1, }; static int aic_ac102_probe(struct platform_device *pdev) { int ret; struct device_node *np = pdev->dev.of_node; aic_ac102.dev = &pdev->dev; aic_ac102_dai.codecs->of_node = of_parse_phandle(np, "aic,codec-chip", 0); if (!aic_ac102_dai.codecs->of_node) { dev_err(&pdev->dev, "Property 'aic,codec-chip' missing or invalid\n"); return -EINVAL; } aic_ac102_dai.cpus->of_node = of_parse_phandle(np, "aic,i2s-controller", 0); if (!aic_ac102_dai.cpus->of_node) { dev_err(&pdev->dev, "Property 'aic,i2s-controller' missing or invalid\n"); ret = -EINVAL; goto put_codec_of_node; } aic_ac102_dai.platforms->of_node = aic_ac102_dai.cpus->of_node; ret = snd_soc_register_card(&aic_ac102); if (ret) { dev_err(&pdev->dev, "Sound card register failed %d\n", ret); goto put_cpu_of_node; } return ret; put_cpu_of_node: of_node_put(aic_ac102_dai.cpus->of_node); aic_ac102_dai.cpus->of_node = NULL; put_codec_of_node: of_node_put(aic_ac102_dai.codecs->of_node); aic_ac102_dai.codecs->of_node = NULL; return ret; } static int aic_ac102_remove(struct platform_device *pdev) { snd_soc_unregister_card(&aic_ac102); return 0; } static const struct of_device_id aic_ac102_dt_ids[] = { {.compatible = "artinchip,aic-ac102",}, {/* sentinel */} }; static struct platform_driver aic_ac102_driver = { .driver = { .name = "aic_ac102-audio", .of_match_table = aic_ac102_dt_ids, }, .probe = aic_ac102_probe, .remove = aic_ac102_remove, }; module_platform_driver(aic_ac102_driver); MODULE_AUTHOR("dwj "); MODULE_DESCRIPTION("ALSA SoC driver for aic"); MODULE_LICENSE("GPL");