| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Marcus Cooper | 2278 | 98.49% | 4 | 57.14% |
| Arvind Yadav | 26 | 1.12% | 1 | 14.29% |
| Wei Yongjun | 8 | 0.35% | 1 | 14.29% |
| Philipp Zabel | 1 | 0.04% | 1 | 14.29% |
| Total | 2313 | 7 |
/* * ALSA SoC SPDIF Audio Layer * * Copyright 2015 Andrea Venturi <be17068@iperbole.bo.it> * Copyright 2015 Marcus Cooper <codekipper@gmail.com> * * Based on the Allwinner SDK driver, released under the GPL. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/regmap.h> #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/ioport.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/reset.h> #include <sound/dmaengine_pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #define SUN4I_SPDIF_CTL (0x00) #define SUN4I_SPDIF_CTL_MCLKDIV(v) ((v) << 4) /* v even */ #define SUN4I_SPDIF_CTL_MCLKOUTEN BIT(2) #define SUN4I_SPDIF_CTL_GEN BIT(1) #define SUN4I_SPDIF_CTL_RESET BIT(0) #define SUN4I_SPDIF_TXCFG (0x04) #define SUN4I_SPDIF_TXCFG_SINGLEMOD BIT(31) #define SUN4I_SPDIF_TXCFG_ASS BIT(17) #define SUN4I_SPDIF_TXCFG_NONAUDIO BIT(16) #define SUN4I_SPDIF_TXCFG_TXRATIO(v) ((v) << 4) #define SUN4I_SPDIF_TXCFG_TXRATIO_MASK GENMASK(8, 4) #define SUN4I_SPDIF_TXCFG_FMTRVD GENMASK(3, 2) #define SUN4I_SPDIF_TXCFG_FMT16BIT (0 << 2) #define SUN4I_SPDIF_TXCFG_FMT20BIT (1 << 2) #define SUN4I_SPDIF_TXCFG_FMT24BIT (2 << 2) #define SUN4I_SPDIF_TXCFG_CHSTMODE BIT(1) #define SUN4I_SPDIF_TXCFG_TXEN BIT(0) #define SUN4I_SPDIF_RXCFG (0x08) #define SUN4I_SPDIF_RXCFG_LOCKFLAG BIT(4) #define SUN4I_SPDIF_RXCFG_CHSTSRC BIT(3) #define SUN4I_SPDIF_RXCFG_CHSTCP BIT(1) #define SUN4I_SPDIF_RXCFG_RXEN BIT(0) #define SUN4I_SPDIF_TXFIFO (0x0C) #define SUN4I_SPDIF_RXFIFO (0x10) #define SUN4I_SPDIF_FCTL (0x14) #define SUN4I_SPDIF_FCTL_FIFOSRC BIT(31) #define SUN4I_SPDIF_FCTL_FTX BIT(17) #define SUN4I_SPDIF_FCTL_FRX BIT(16) #define SUN4I_SPDIF_FCTL_TXTL(v) ((v) << 8) #define SUN4I_SPDIF_FCTL_TXTL_MASK GENMASK(12, 8) #define SUN4I_SPDIF_FCTL_RXTL(v) ((v) << 3) #define SUN4I_SPDIF_FCTL_RXTL_MASK GENMASK(7, 3) #define SUN4I_SPDIF_FCTL_TXIM BIT(2) #define SUN4I_SPDIF_FCTL_RXOM(v) ((v) << 0) #define SUN4I_SPDIF_FCTL_RXOM_MASK GENMASK(1, 0) #define SUN4I_SPDIF_FSTA (0x18) #define SUN4I_SPDIF_FSTA_TXE BIT(14) #define SUN4I_SPDIF_FSTA_TXECNTSHT (8) #define SUN4I_SPDIF_FSTA_RXA BIT(6) #define SUN4I_SPDIF_FSTA_RXACNTSHT (0) #define SUN4I_SPDIF_INT (0x1C) #define SUN4I_SPDIF_INT_RXLOCKEN BIT(18) #define SUN4I_SPDIF_INT_RXUNLOCKEN BIT(17) #define SUN4I_SPDIF_INT_RXPARERREN BIT(16) #define SUN4I_SPDIF_INT_TXDRQEN BIT(7) #define SUN4I_SPDIF_INT_TXUIEN BIT(6) #define SUN4I_SPDIF_INT_TXOIEN BIT(5) #define SUN4I_SPDIF_INT_TXEIEN BIT(4) #define SUN4I_SPDIF_INT_RXDRQEN BIT(2) #define SUN4I_SPDIF_INT_RXOIEN BIT(1) #define SUN4I_SPDIF_INT_RXAIEN BIT(0) #define SUN4I_SPDIF_ISTA (0x20) #define SUN4I_SPDIF_ISTA_RXLOCKSTA BIT(18) #define SUN4I_SPDIF_ISTA_RXUNLOCKSTA BIT(17) #define SUN4I_SPDIF_ISTA_RXPARERRSTA BIT(16) #define SUN4I_SPDIF_ISTA_TXUSTA BIT(6) #define SUN4I_SPDIF_ISTA_TXOSTA BIT(5) #define SUN4I_SPDIF_ISTA_TXESTA BIT(4) #define SUN4I_SPDIF_ISTA_RXOSTA BIT(1) #define SUN4I_SPDIF_ISTA_RXASTA BIT(0) #define SUN8I_SPDIF_TXFIFO (0x20) #define SUN4I_SPDIF_TXCNT (0x24) #define SUN4I_SPDIF_RXCNT (0x28) #define SUN4I_SPDIF_TXCHSTA0 (0x2C) #define SUN4I_SPDIF_TXCHSTA0_CLK(v) ((v) << 28) #define SUN4I_SPDIF_TXCHSTA0_SAMFREQ(v) ((v) << 24) #define SUN4I_SPDIF_TXCHSTA0_SAMFREQ_MASK GENMASK(27, 24) #define SUN4I_SPDIF_TXCHSTA0_CHNUM(v) ((v) << 20) #define SUN4I_SPDIF_TXCHSTA0_CHNUM_MASK GENMASK(23, 20) #define SUN4I_SPDIF_TXCHSTA0_SRCNUM(v) ((v) << 16) #define SUN4I_SPDIF_TXCHSTA0_CATACOD(v) ((v) << 8) #define SUN4I_SPDIF_TXCHSTA0_MODE(v) ((v) << 6) #define SUN4I_SPDIF_TXCHSTA0_EMPHASIS(v) ((v) << 3) #define SUN4I_SPDIF_TXCHSTA0_CP BIT(2) #define SUN4I_SPDIF_TXCHSTA0_AUDIO BIT(1) #define SUN4I_SPDIF_TXCHSTA0_PRO BIT(0) #define SUN4I_SPDIF_TXCHSTA1 (0x30) #define SUN4I_SPDIF_TXCHSTA1_CGMSA(v) ((v) << 8) #define SUN4I_SPDIF_TXCHSTA1_ORISAMFREQ(v) ((v) << 4) #define SUN4I_SPDIF_TXCHSTA1_ORISAMFREQ_MASK GENMASK(7, 4) #define SUN4I_SPDIF_TXCHSTA1_SAMWORDLEN(v) ((v) << 1) #define SUN4I_SPDIF_TXCHSTA1_MAXWORDLEN BIT(0) #define SUN4I_SPDIF_RXCHSTA0 (0x34) #define SUN4I_SPDIF_RXCHSTA0_CLK(v) ((v) << 28) #define SUN4I_SPDIF_RXCHSTA0_SAMFREQ(v) ((v) << 24) #define SUN4I_SPDIF_RXCHSTA0_CHNUM(v) ((v) << 20) #define SUN4I_SPDIF_RXCHSTA0_SRCNUM(v) ((v) << 16) #define SUN4I_SPDIF_RXCHSTA0_CATACOD(v) ((v) << 8) #define SUN4I_SPDIF_RXCHSTA0_MODE(v) ((v) << 6) #define SUN4I_SPDIF_RXCHSTA0_EMPHASIS(v) ((v) << 3) #define SUN4I_SPDIF_RXCHSTA0_CP BIT(2) #define SUN4I_SPDIF_RXCHSTA0_AUDIO BIT(1) #define SUN4I_SPDIF_RXCHSTA0_PRO BIT(0) #define SUN4I_SPDIF_RXCHSTA1 (0x38) #define SUN4I_SPDIF_RXCHSTA1_CGMSA(v) ((v) << 8) #define SUN4I_SPDIF_RXCHSTA1_ORISAMFREQ(v) ((v) << 4) #define SUN4I_SPDIF_RXCHSTA1_SAMWORDLEN(v) ((v) << 1) #define SUN4I_SPDIF_RXCHSTA1_MAXWORDLEN BIT(0) /* Defines for Sampling Frequency */ #define SUN4I_SPDIF_SAMFREQ_44_1KHZ 0x0 #define SUN4I_SPDIF_SAMFREQ_NOT_INDICATED 0x1 #define SUN4I_SPDIF_SAMFREQ_48KHZ 0x2 #define SUN4I_SPDIF_SAMFREQ_32KHZ 0x3 #define SUN4I_SPDIF_SAMFREQ_22_05KHZ 0x4 #define SUN4I_SPDIF_SAMFREQ_24KHZ 0x6 #define SUN4I_SPDIF_SAMFREQ_88_2KHZ 0x8 #define SUN4I_SPDIF_SAMFREQ_76_8KHZ 0x9 #define SUN4I_SPDIF_SAMFREQ_96KHZ 0xa #define SUN4I_SPDIF_SAMFREQ_176_4KHZ 0xc #define SUN4I_SPDIF_SAMFREQ_192KHZ 0xe struct sun4i_spdif_dev { struct platform_device *pdev; struct clk *spdif_clk; struct clk *apb_clk; struct reset_control *rst; struct snd_soc_dai_driver cpu_dai_drv; struct regmap *regmap; struct snd_dmaengine_dai_dma_data dma_params_tx; }; static void sun4i_spdif_configure(struct sun4i_spdif_dev *host) { /* soft reset SPDIF */ regmap_write(host->regmap, SUN4I_SPDIF_CTL, SUN4I_SPDIF_CTL_RESET); /* flush TX FIFO */ regmap_update_bits(host->regmap, SUN4I_SPDIF_FCTL, SUN4I_SPDIF_FCTL_FTX, SUN4I_SPDIF_FCTL_FTX); /* clear TX counter */ regmap_write(host->regmap, SUN4I_SPDIF_TXCNT, 0); } static void sun4i_snd_txctrl_on(struct snd_pcm_substream *substream, struct sun4i_spdif_dev *host) { if (substream->runtime->channels == 1) regmap_update_bits(host->regmap, SUN4I_SPDIF_TXCFG, SUN4I_SPDIF_TXCFG_SINGLEMOD, SUN4I_SPDIF_TXCFG_SINGLEMOD); /* SPDIF TX ENABLE */ regmap_update_bits(host->regmap, SUN4I_SPDIF_TXCFG, SUN4I_SPDIF_TXCFG_TXEN, SUN4I_SPDIF_TXCFG_TXEN); /* DRQ ENABLE */ regmap_update_bits(host->regmap, SUN4I_SPDIF_INT, SUN4I_SPDIF_INT_TXDRQEN, SUN4I_SPDIF_INT_TXDRQEN); /* Global enable */ regmap_update_bits(host->regmap, SUN4I_SPDIF_CTL, SUN4I_SPDIF_CTL_GEN, SUN4I_SPDIF_CTL_GEN); } static void sun4i_snd_txctrl_off(struct snd_pcm_substream *substream, struct sun4i_spdif_dev *host) { /* SPDIF TX DISABLE */ regmap_update_bits(host->regmap, SUN4I_SPDIF_TXCFG, SUN4I_SPDIF_TXCFG_TXEN, 0); /* DRQ DISABLE */ regmap_update_bits(host->regmap, SUN4I_SPDIF_INT, SUN4I_SPDIF_INT_TXDRQEN, 0); /* Global disable */ regmap_update_bits(host->regmap, SUN4I_SPDIF_CTL, SUN4I_SPDIF_CTL_GEN, 0); } static int sun4i_spdif_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct sun4i_spdif_dev *host = snd_soc_dai_get_drvdata(rtd->cpu_dai); if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) return -EINVAL; sun4i_spdif_configure(host); return 0; } static int sun4i_spdif_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *cpu_dai) { int ret = 0; int fmt; unsigned long rate = params_rate(params); u32 mclk_div = 0; unsigned int mclk = 0; u32 reg_val; struct sun4i_spdif_dev *host = snd_soc_dai_get_drvdata(cpu_dai); struct platform_device *pdev = host->pdev; /* Add the PCM and raw data select interface */ switch (params_channels(params)) { case 1: /* PCM mode */ case 2: fmt = 0; break; case 4: /* raw data mode */ fmt = SUN4I_SPDIF_TXCFG_NONAUDIO; break; default: return -EINVAL; } switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: fmt |= SUN4I_SPDIF_TXCFG_FMT16BIT; break; case SNDRV_PCM_FORMAT_S20_3LE: fmt |= SUN4I_SPDIF_TXCFG_FMT20BIT; break; case SNDRV_PCM_FORMAT_S24_LE: fmt |= SUN4I_SPDIF_TXCFG_FMT24BIT; break; default: return -EINVAL; } switch (rate) { case 22050: case 44100: case 88200: case 176400: mclk = 22579200; break; case 24000: case 32000: case 48000: case 96000: case 192000: mclk = 24576000; break; default: return -EINVAL; } ret = clk_set_rate(host->spdif_clk, mclk); if (ret < 0) { dev_err(&pdev->dev, "Setting SPDIF clock rate for %d Hz failed!\n", mclk); return ret; } regmap_update_bits(host->regmap, SUN4I_SPDIF_FCTL, SUN4I_SPDIF_FCTL_TXIM, SUN4I_SPDIF_FCTL_TXIM); switch (rate) { case 22050: case 24000: mclk_div = 8; break; case 32000: mclk_div = 6; break; case 44100: case 48000: mclk_div = 4; break; case 88200: case 96000: mclk_div = 2; break; case 176400: case 192000: mclk_div = 1; break; default: return -EINVAL; } reg_val = 0; reg_val |= SUN4I_SPDIF_TXCFG_ASS; reg_val |= fmt; /* set non audio and bit depth */ reg_val |= SUN4I_SPDIF_TXCFG_CHSTMODE; reg_val |= SUN4I_SPDIF_TXCFG_TXRATIO(mclk_div - 1); regmap_write(host->regmap, SUN4I_SPDIF_TXCFG, reg_val); return 0; } static int sun4i_spdif_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { int ret = 0; struct sun4i_spdif_dev *host = snd_soc_dai_get_drvdata(dai); if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) return -EINVAL; switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: sun4i_snd_txctrl_on(substream, host); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: sun4i_snd_txctrl_off(substream, host); break; default: ret = -EINVAL; break; } return ret; } static int sun4i_spdif_soc_dai_probe(struct snd_soc_dai *dai) { struct sun4i_spdif_dev *host = snd_soc_dai_get_drvdata(dai); snd_soc_dai_init_dma_data(dai, &host->dma_params_tx, NULL); return 0; } static const struct snd_soc_dai_ops sun4i_spdif_dai_ops = { .startup = sun4i_spdif_startup, .trigger = sun4i_spdif_trigger, .hw_params = sun4i_spdif_hw_params, }; static const struct regmap_config sun4i_spdif_regmap_config = { .reg_bits = 32, .reg_stride = 4, .val_bits = 32, .max_register = SUN4I_SPDIF_RXCHSTA1, }; #define SUN4I_RATES SNDRV_PCM_RATE_8000_192000 #define SUN4I_FORMATS (SNDRV_PCM_FORMAT_S16_LE | \ SNDRV_PCM_FORMAT_S20_3LE | \ SNDRV_PCM_FORMAT_S24_LE) static struct snd_soc_dai_driver sun4i_spdif_dai = { .playback = { .channels_min = 1, .channels_max = 2, .rates = SUN4I_RATES, .formats = SUN4I_FORMATS, }, .probe = sun4i_spdif_soc_dai_probe, .ops = &sun4i_spdif_dai_ops, .name = "spdif", }; struct sun4i_spdif_quirks { unsigned int reg_dac_txdata; /* TX FIFO offset for DMA config */ bool has_reset; }; static const struct sun4i_spdif_quirks sun4i_a10_spdif_quirks = { .reg_dac_txdata = SUN4I_SPDIF_TXFIFO, }; static const struct sun4i_spdif_quirks sun6i_a31_spdif_quirks = { .reg_dac_txdata = SUN4I_SPDIF_TXFIFO, .has_reset = true, }; static const struct sun4i_spdif_quirks sun8i_h3_spdif_quirks = { .reg_dac_txdata = SUN8I_SPDIF_TXFIFO, .has_reset = true, }; static const struct of_device_id sun4i_spdif_of_match[] = { { .compatible = "allwinner,sun4i-a10-spdif", .data = &sun4i_a10_spdif_quirks, }, { .compatible = "allwinner,sun6i-a31-spdif", .data = &sun6i_a31_spdif_quirks, }, { .compatible = "allwinner,sun8i-h3-spdif", .data = &sun8i_h3_spdif_quirks, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sun4i_spdif_of_match); static const struct snd_soc_component_driver sun4i_spdif_component = { .name = "sun4i-spdif", }; static int sun4i_spdif_runtime_suspend(struct device *dev) { struct sun4i_spdif_dev *host = dev_get_drvdata(dev); clk_disable_unprepare(host->spdif_clk); clk_disable_unprepare(host->apb_clk); return 0; } static int sun4i_spdif_runtime_resume(struct device *dev) { struct sun4i_spdif_dev *host = dev_get_drvdata(dev); int ret; ret = clk_prepare_enable(host->spdif_clk); if (ret) return ret; ret = clk_prepare_enable(host->apb_clk); if (ret) clk_disable_unprepare(host->spdif_clk); return ret; } static int sun4i_spdif_probe(struct platform_device *pdev) { struct sun4i_spdif_dev *host; struct resource *res; const struct sun4i_spdif_quirks *quirks; int ret; void __iomem *base; dev_dbg(&pdev->dev, "Entered %s\n", __func__); host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); if (!host) return -ENOMEM; host->pdev = pdev; /* Initialize this copy of the CPU DAI driver structure */ memcpy(&host->cpu_dai_drv, &sun4i_spdif_dai, sizeof(sun4i_spdif_dai)); host->cpu_dai_drv.name = dev_name(&pdev->dev); /* Get the addresses */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(base)) return PTR_ERR(base); quirks = of_device_get_match_data(&pdev->dev); if (quirks == NULL) { dev_err(&pdev->dev, "Failed to determine the quirks to use\n"); return -ENODEV; } host->regmap = devm_regmap_init_mmio(&pdev->dev, base, &sun4i_spdif_regmap_config); /* Clocks */ host->apb_clk = devm_clk_get(&pdev->dev, "apb"); if (IS_ERR(host->apb_clk)) { dev_err(&pdev->dev, "failed to get a apb clock.\n"); return PTR_ERR(host->apb_clk); } host->spdif_clk = devm_clk_get(&pdev->dev, "spdif"); if (IS_ERR(host->spdif_clk)) { dev_err(&pdev->dev, "failed to get a spdif clock.\n"); return PTR_ERR(host->spdif_clk); } host->dma_params_tx.addr = res->start + quirks->reg_dac_txdata; host->dma_params_tx.maxburst = 8; host->dma_params_tx.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; platform_set_drvdata(pdev, host); if (quirks->has_reset) { host->rst = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL); if (IS_ERR(host->rst) && PTR_ERR(host->rst) == -EPROBE_DEFER) { ret = -EPROBE_DEFER; dev_err(&pdev->dev, "Failed to get reset: %d\n", ret); return ret; } if (!IS_ERR(host->rst)) reset_control_deassert(host->rst); } ret = devm_snd_soc_register_component(&pdev->dev, &sun4i_spdif_component, &sun4i_spdif_dai, 1); if (ret) return ret; pm_runtime_enable(&pdev->dev); if (!pm_runtime_enabled(&pdev->dev)) { ret = sun4i_spdif_runtime_resume(&pdev->dev); if (ret) goto err_unregister; } ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); if (ret) goto err_suspend; return 0; err_suspend: if (!pm_runtime_status_suspended(&pdev->dev)) sun4i_spdif_runtime_suspend(&pdev->dev); err_unregister: pm_runtime_disable(&pdev->dev); return ret; } static int sun4i_spdif_remove(struct platform_device *pdev) { pm_runtime_disable(&pdev->dev); if (!pm_runtime_status_suspended(&pdev->dev)) sun4i_spdif_runtime_suspend(&pdev->dev); return 0; } static const struct dev_pm_ops sun4i_spdif_pm = { SET_RUNTIME_PM_OPS(sun4i_spdif_runtime_suspend, sun4i_spdif_runtime_resume, NULL) }; static struct platform_driver sun4i_spdif_driver = { .driver = { .name = "sun4i-spdif", .of_match_table = of_match_ptr(sun4i_spdif_of_match), .pm = &sun4i_spdif_pm, }, .probe = sun4i_spdif_probe, .remove = sun4i_spdif_remove, }; module_platform_driver(sun4i_spdif_driver); MODULE_AUTHOR("Marcus Cooper <codekipper@gmail.com>"); MODULE_AUTHOR("Andrea Venturi <be17068@iperbole.bo.it>"); MODULE_DESCRIPTION("Allwinner sun4i SPDIF SoC Interface"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:sun4i-spdif");
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