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Diffstat (limited to 'sound/soc/sunxi/sun4i-spdif.c')
-rw-r--r--sound/soc/sunxi/sun4i-spdif.c273
1 files changed, 229 insertions, 44 deletions
diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c
index eaefd07a5ed0..2e7ac8ab71bb 100644
--- a/sound/soc/sunxi/sun4i-spdif.c
+++ b/sound/soc/sunxi/sun4i-spdif.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ALSA SoC SPDIF Audio Layer
*
@@ -5,16 +6,6 @@
* 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>
@@ -23,13 +14,14 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/regmap.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
+#include <linux/spinlock.h>
+#include <sound/asoundef.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@@ -75,6 +67,18 @@
#define SUN4I_SPDIF_FCTL_RXOM(v) ((v) << 0)
#define SUN4I_SPDIF_FCTL_RXOM_MASK GENMASK(1, 0)
+#define SUN50I_H6_SPDIF_FCTL (0x14)
+ #define SUN50I_H6_SPDIF_FCTL_HUB_EN BIT(31)
+ #define SUN50I_H6_SPDIF_FCTL_FTX BIT(30)
+ #define SUN50I_H6_SPDIF_FCTL_FRX BIT(29)
+ #define SUN50I_H6_SPDIF_FCTL_TXTL(v) ((v) << 12)
+ #define SUN50I_H6_SPDIF_FCTL_TXTL_MASK GENMASK(19, 12)
+ #define SUN50I_H6_SPDIF_FCTL_RXTL(v) ((v) << 4)
+ #define SUN50I_H6_SPDIF_FCTL_RXTL_MASK GENMASK(10, 4)
+ #define SUN50I_H6_SPDIF_FCTL_TXIM BIT(2)
+ #define SUN50I_H6_SPDIF_FCTL_RXOM(v) ((v) << 0)
+ #define SUN50I_H6_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)
@@ -161,6 +165,21 @@
#define SUN4I_SPDIF_SAMFREQ_176_4KHZ 0xc
#define SUN4I_SPDIF_SAMFREQ_192KHZ 0xe
+/**
+ * struct sun4i_spdif_quirks - Differences between SoC variants.
+ *
+ * @reg_dac_txdata: TX FIFO offset for DMA config.
+ * @has_reset: SoC needs reset deasserted.
+ * @val_fctl_ftx: TX FIFO flush bitmask.
+ */
+struct sun4i_spdif_quirks {
+ unsigned int reg_dac_txdata;
+ bool has_reset;
+ unsigned int val_fctl_ftx;
+ unsigned int mclk_multiplier;
+ const char *tx_clk_name;
+};
+
struct sun4i_spdif_dev {
struct platform_device *pdev;
struct clk *spdif_clk;
@@ -169,16 +188,24 @@ struct sun4i_spdif_dev {
struct snd_soc_dai_driver cpu_dai_drv;
struct regmap *regmap;
struct snd_dmaengine_dai_dma_data dma_params_tx;
+ const struct sun4i_spdif_quirks *quirks;
+ spinlock_t lock;
};
static void sun4i_spdif_configure(struct sun4i_spdif_dev *host)
{
+ const struct sun4i_spdif_quirks *quirks = host->quirks;
+
/* 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);
+ quirks->val_fctl_ftx, quirks->val_fctl_ftx);
+
+ /* Valid data at the MSB of TXFIFO Register */
+ regmap_update_bits(host->regmap, SUN4I_SPDIF_FCTL,
+ SUN4I_SPDIF_FCTL_TXIM, 0);
/* clear TX counter */
regmap_write(host->regmap, SUN4I_SPDIF_TXCNT, 0);
@@ -224,8 +251,8 @@ static void sun4i_snd_txctrl_off(struct snd_pcm_substream *substream,
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);
+ struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+ struct sun4i_spdif_dev *host = snd_soc_dai_get_drvdata(snd_soc_rtd_to_cpu(rtd, 0));
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
return -EINVAL;
@@ -261,14 +288,17 @@ static int sun4i_spdif_hw_params(struct snd_pcm_substream *substream,
return -EINVAL;
}
+ host->dma_params_tx.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
fmt |= SUN4I_SPDIF_TXCFG_FMT16BIT;
+ host->dma_params_tx.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
fmt |= SUN4I_SPDIF_TXCFG_FMT20BIT;
break;
case SNDRV_PCM_FORMAT_S24_LE:
+ case SNDRV_PCM_FORMAT_S32_LE:
fmt |= SUN4I_SPDIF_TXCFG_FMT24BIT;
break;
default:
@@ -292,6 +322,7 @@ static int sun4i_spdif_hw_params(struct snd_pcm_substream *substream,
default:
return -EINVAL;
}
+ mclk *= host->quirks->mclk_multiplier;
ret = clk_set_rate(host->spdif_clk, mclk);
if (ret < 0) {
@@ -300,9 +331,6 @@ static int sun4i_spdif_hw_params(struct snd_pcm_substream *substream,
return ret;
}
- regmap_update_bits(host->regmap, SUN4I_SPDIF_FCTL,
- SUN4I_SPDIF_FCTL_TXIM, SUN4I_SPDIF_FCTL_TXIM);
-
switch (rate) {
case 22050:
case 24000:
@@ -326,6 +354,7 @@ static int sun4i_spdif_hw_params(struct snd_pcm_substream *substream,
default:
return -EINVAL;
}
+ mclk_div *= host->quirks->mclk_multiplier;
reg_val = 0;
reg_val |= SUN4I_SPDIF_TXCFG_ASS;
@@ -366,15 +395,127 @@ static int sun4i_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
return ret;
}
+static int sun4i_spdif_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+ uinfo->count = 1;
+
+ return 0;
+}
+
+static int sun4i_spdif_get_status_mask(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ u8 *status = ucontrol->value.iec958.status;
+
+ status[0] = 0xff;
+ status[1] = 0xff;
+ status[2] = 0xff;
+ status[3] = 0xff;
+ status[4] = 0xff;
+ status[5] = 0x03;
+
+ return 0;
+}
+
+static int sun4i_spdif_get_status(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct sun4i_spdif_dev *host = snd_soc_dai_get_drvdata(cpu_dai);
+ u8 *status = ucontrol->value.iec958.status;
+ unsigned long flags;
+ unsigned int reg;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ regmap_read(host->regmap, SUN4I_SPDIF_TXCHSTA0, &reg);
+
+ status[0] = reg & 0xff;
+ status[1] = (reg >> 8) & 0xff;
+ status[2] = (reg >> 16) & 0xff;
+ status[3] = (reg >> 24) & 0xff;
+
+ regmap_read(host->regmap, SUN4I_SPDIF_TXCHSTA1, &reg);
+
+ status[4] = reg & 0xff;
+ status[5] = (reg >> 8) & 0x3;
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ return 0;
+}
+
+static int sun4i_spdif_set_status(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct sun4i_spdif_dev *host = snd_soc_dai_get_drvdata(cpu_dai);
+ u8 *status = ucontrol->value.iec958.status;
+ unsigned long flags;
+ unsigned int reg;
+ bool chg0, chg1;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ reg = (u32)status[3] << 24;
+ reg |= (u32)status[2] << 16;
+ reg |= (u32)status[1] << 8;
+ reg |= (u32)status[0];
+
+ regmap_update_bits_check(host->regmap, SUN4I_SPDIF_TXCHSTA0,
+ GENMASK(31,0), reg, &chg0);
+
+ reg = (u32)status[5] << 8;
+ reg |= (u32)status[4];
+
+ regmap_update_bits_check(host->regmap, SUN4I_SPDIF_TXCHSTA1,
+ GENMASK(9,0), reg, &chg1);
+
+ reg = SUN4I_SPDIF_TXCFG_CHSTMODE;
+ if (status[0] & IEC958_AES0_NONAUDIO)
+ reg |= SUN4I_SPDIF_TXCFG_NONAUDIO;
+
+ regmap_update_bits(host->regmap, SUN4I_SPDIF_TXCFG,
+ SUN4I_SPDIF_TXCFG_CHSTMODE |
+ SUN4I_SPDIF_TXCFG_NONAUDIO, reg);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ return chg0 || chg1;
+}
+
+static struct snd_kcontrol_new sun4i_spdif_controls[] = {
+ {
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
+ .info = sun4i_spdif_info,
+ .get = sun4i_spdif_get_status_mask
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
+ .info = sun4i_spdif_info,
+ .get = sun4i_spdif_get_status,
+ .put = sun4i_spdif_set_status
+ }
+};
+
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);
+ snd_soc_add_dai_controls(dai, sun4i_spdif_controls,
+ ARRAY_SIZE(sun4i_spdif_controls));
+
return 0;
}
static const struct snd_soc_dai_ops sun4i_spdif_dai_ops = {
+ .probe = sun4i_spdif_soc_dai_probe,
.startup = sun4i_spdif_startup,
.trigger = sun4i_spdif_trigger,
.hw_params = sun4i_spdif_hw_params,
@@ -389,9 +530,10 @@ static const struct regmap_config sun4i_spdif_regmap_config = {
#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)
+#define SUN4I_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_driver sun4i_spdif_dai = {
.playback = {
@@ -400,28 +542,43 @@ static struct snd_soc_dai_driver sun4i_spdif_dai = {
.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,
+ .val_fctl_ftx = SUN4I_SPDIF_FCTL_FTX,
+ .mclk_multiplier = 1,
};
static const struct sun4i_spdif_quirks sun6i_a31_spdif_quirks = {
.reg_dac_txdata = SUN4I_SPDIF_TXFIFO,
+ .val_fctl_ftx = SUN4I_SPDIF_FCTL_FTX,
.has_reset = true,
+ .mclk_multiplier = 1,
};
static const struct sun4i_spdif_quirks sun8i_h3_spdif_quirks = {
.reg_dac_txdata = SUN8I_SPDIF_TXFIFO,
+ .val_fctl_ftx = SUN4I_SPDIF_FCTL_FTX,
.has_reset = true,
+ .mclk_multiplier = 4,
+};
+
+static const struct sun4i_spdif_quirks sun50i_h6_spdif_quirks = {
+ .reg_dac_txdata = SUN8I_SPDIF_TXFIFO,
+ .val_fctl_ftx = SUN50I_H6_SPDIF_FCTL_FTX,
+ .has_reset = true,
+ .mclk_multiplier = 1,
+};
+
+static const struct sun4i_spdif_quirks sun55i_a523_spdif_quirks = {
+ .reg_dac_txdata = SUN8I_SPDIF_TXFIFO,
+ .val_fctl_ftx = SUN50I_H6_SPDIF_FCTL_FTX,
+ .has_reset = true,
+ .mclk_multiplier = 1,
+ .tx_clk_name = "tx",
};
static const struct of_device_id sun4i_spdif_of_match[] = {
@@ -437,12 +594,31 @@ static const struct of_device_id sun4i_spdif_of_match[] = {
.compatible = "allwinner,sun8i-h3-spdif",
.data = &sun8i_h3_spdif_quirks,
},
+ {
+ .compatible = "allwinner,sun50i-h6-spdif",
+ .data = &sun50i_h6_spdif_quirks,
+ },
+ {
+ .compatible = "allwinner,sun50i-h616-spdif",
+ /* Essentially the same as the H6, but without RX */
+ .data = &sun50i_h6_spdif_quirks,
+ },
+ {
+ .compatible = "allwinner,sun55i-a523-spdif",
+ /*
+ * Almost the same as H6, but has split the TX and RX clocks,
+ * has a separate reset bit for the RX side, and has some
+ * expanded features for the RX side.
+ */
+ .data = &sun55i_a523_spdif_quirks,
+ },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sun4i_spdif_of_match);
static const struct snd_soc_component_driver sun4i_spdif_component = {
- .name = "sun4i-spdif",
+ .name = "sun4i-spdif",
+ .legacy_dai_naming = 1,
};
static int sun4i_spdif_runtime_suspend(struct device *dev)
@@ -458,11 +634,16 @@ static int sun4i_spdif_runtime_suspend(struct device *dev)
static int sun4i_spdif_runtime_resume(struct device *dev)
{
struct sun4i_spdif_dev *host = dev_get_drvdata(dev);
+ int ret;
- clk_prepare_enable(host->spdif_clk);
- clk_prepare_enable(host->apb_clk);
+ 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 0;
+ return ret;
}
static int sun4i_spdif_probe(struct platform_device *pdev)
@@ -472,6 +653,7 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
const struct sun4i_spdif_quirks *quirks;
int ret;
void __iomem *base;
+ const char *tx_clk_name = "spdif";
dev_dbg(&pdev->dev, "Entered %s\n", __func__);
@@ -480,14 +662,14 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
return -ENOMEM;
host->pdev = pdev;
+ spin_lock_init(&host->lock);
/* 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);
+ base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(base))
return PTR_ERR(base);
@@ -496,6 +678,7 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to determine the quirks to use\n");
return -ENODEV;
}
+ host->quirks = quirks;
host->regmap = devm_regmap_init_mmio(&pdev->dev, base,
&sun4i_spdif_regmap_config);
@@ -507,9 +690,12 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
return PTR_ERR(host->apb_clk);
}
- host->spdif_clk = devm_clk_get(&pdev->dev, "spdif");
+ if (quirks->tx_clk_name)
+ tx_clk_name = quirks->tx_clk_name;
+ host->spdif_clk = devm_clk_get(&pdev->dev, tx_clk_name);
if (IS_ERR(host->spdif_clk)) {
- dev_err(&pdev->dev, "failed to get a spdif clock.\n");
+ dev_err(&pdev->dev, "failed to get the \"%s\" clock.\n",
+ tx_clk_name);
return PTR_ERR(host->spdif_clk);
}
@@ -520,8 +706,9 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, host);
if (quirks->has_reset) {
- host->rst = devm_reset_control_get_optional(&pdev->dev, NULL);
- if (IS_ERR(host->rst) && PTR_ERR(host->rst) == -EPROBE_DEFER) {
+ host->rst = devm_reset_control_get_optional_exclusive(&pdev->dev,
+ NULL);
+ if (PTR_ERR(host->rst) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
dev_err(&pdev->dev, "Failed to get reset: %d\n", ret);
return ret;
@@ -554,25 +741,23 @@ err_unregister:
return ret;
}
-static int sun4i_spdif_remove(struct platform_device *pdev)
+static void 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)
+ 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,
+ .of_match_table = sun4i_spdif_of_match,
+ .pm = pm_ptr(&sun4i_spdif_pm),
},
.probe = sun4i_spdif_probe,
.remove = sun4i_spdif_remove,
generated by cgit (git 2.34.1) at 2025-12-26 06:04:34 +0000