Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Guennadi Liakhovetski | 680 | 87.63% | 4 | 26.67% |
Kuninori Morimoto | 62 | 7.99% | 5 | 33.33% |
Lars-Peter Clausen | 26 | 3.35% | 2 | 13.33% |
Axel Lin | 5 | 0.64% | 1 | 6.67% |
Bhumika Goyal | 1 | 0.13% | 1 | 6.67% |
Russell King | 1 | 0.13% | 1 | 6.67% |
Liam Girdwood | 1 | 0.13% | 1 | 6.67% |
Total | 776 | 15 |
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// SPDX-License-Identifier: GPL-2.0 // // ALSA SoC driver for Migo-R // // Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> #include <linux/clkdev.h> #include <linux/device.h> #include <linux/firmware.h> #include <linux/module.h> #include <asm/clock.h> #include <cpu/sh7722.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> #include "../codecs/wm8978.h" #include "siu.h" /* Default 8000Hz sampling frequency */ static unsigned long codec_freq = 8000 * 512; static unsigned int use_count; /* External clock, sourced from the codec at the SIUMCKB pin */ static unsigned long siumckb_recalc(struct clk *clk) { return codec_freq; } static struct sh_clk_ops siumckb_clk_ops = { .recalc = siumckb_recalc, }; static struct clk siumckb_clk = { .ops = &siumckb_clk_ops, .rate = 0, /* initialised at run-time */ }; static struct clk_lookup *siumckb_lookup; static int migor_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); int ret; unsigned int rate = params_rate(params); ret = snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 13000000, SND_SOC_CLOCK_IN); if (ret < 0) return ret; ret = snd_soc_dai_set_clkdiv(codec_dai, WM8978_OPCLKRATE, rate * 512); if (ret < 0) return ret; codec_freq = rate * 512; /* * This propagates the parent frequency change to children and * recalculates the frequency table */ clk_set_rate(&siumckb_clk, codec_freq); dev_dbg(codec_dai->dev, "%s: configure %luHz\n", __func__, codec_freq); ret = snd_soc_dai_set_sysclk(snd_soc_rtd_to_cpu(rtd, 0), SIU_CLKB_EXT, codec_freq / 2, SND_SOC_CLOCK_IN); if (!ret) use_count++; return ret; } static int migor_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); if (use_count) { use_count--; if (!use_count) snd_soc_dai_set_sysclk(codec_dai, WM8978_PLL, 0, SND_SOC_CLOCK_IN); } else { dev_dbg(codec_dai->dev, "Unbalanced hw_free!\n"); } return 0; } static const struct snd_soc_ops migor_dai_ops = { .hw_params = migor_hw_params, .hw_free = migor_hw_free, }; static const struct snd_soc_dapm_widget migor_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone", NULL), SND_SOC_DAPM_MIC("Onboard Microphone", NULL), SND_SOC_DAPM_MIC("External Microphone", NULL), }; static const struct snd_soc_dapm_route audio_map[] = { /* Headphone output connected to LHP/RHP, enable OUT4 for VMID */ { "Headphone", NULL, "OUT4 VMID" }, { "OUT4 VMID", NULL, "LHP" }, { "OUT4 VMID", NULL, "RHP" }, /* On-board microphone */ { "RMICN", NULL, "Mic Bias" }, { "RMICP", NULL, "Mic Bias" }, { "Mic Bias", NULL, "Onboard Microphone" }, /* External microphone */ { "LMICN", NULL, "Mic Bias" }, { "LMICP", NULL, "Mic Bias" }, { "Mic Bias", NULL, "External Microphone" }, }; /* migor digital audio interface glue - connects codec <--> CPU */ SND_SOC_DAILINK_DEFS(wm8978, DAILINK_COMP_ARRAY(COMP_CPU("siu-pcm-audio")), DAILINK_COMP_ARRAY(COMP_CODEC("wm8978.0-001a", "wm8978-hifi")), DAILINK_COMP_ARRAY(COMP_PLATFORM("siu-pcm-audio"))); static struct snd_soc_dai_link migor_dai = { .name = "wm8978", .stream_name = "WM8978", .dai_fmt = SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, .ops = &migor_dai_ops, SND_SOC_DAILINK_REG(wm8978), }; /* migor audio machine driver */ static struct snd_soc_card snd_soc_migor = { .name = "Migo-R", .owner = THIS_MODULE, .dai_link = &migor_dai, .num_links = 1, .dapm_widgets = migor_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(migor_dapm_widgets), .dapm_routes = audio_map, .num_dapm_routes = ARRAY_SIZE(audio_map), }; static struct platform_device *migor_snd_device; static int __init migor_init(void) { int ret; ret = clk_register(&siumckb_clk); if (ret < 0) return ret; siumckb_lookup = clkdev_create(&siumckb_clk, "siumckb_clk", NULL); if (!siumckb_lookup) { ret = -ENOMEM; goto eclkdevalloc; } /* Port number used on this machine: port B */ migor_snd_device = platform_device_alloc("soc-audio", 1); if (!migor_snd_device) { ret = -ENOMEM; goto epdevalloc; } platform_set_drvdata(migor_snd_device, &snd_soc_migor); ret = platform_device_add(migor_snd_device); if (ret) goto epdevadd; return 0; epdevadd: platform_device_put(migor_snd_device); epdevalloc: clkdev_drop(siumckb_lookup); eclkdevalloc: clk_unregister(&siumckb_clk); return ret; } static void __exit migor_exit(void) { clkdev_drop(siumckb_lookup); clk_unregister(&siumckb_clk); platform_device_unregister(migor_snd_device); } module_init(migor_init); module_exit(migor_exit); MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); MODULE_DESCRIPTION("ALSA SoC Migor"); MODULE_LICENSE("GPL v2");
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