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Diffstat (limited to 'sound/soc/zte/zx-spdif.c')
-rw-r--r--sound/soc/zte/zx-spdif.c363
1 files changed, 0 insertions, 363 deletions
diff --git a/sound/soc/zte/zx-spdif.c b/sound/soc/zte/zx-spdif.c
deleted file mode 100644
index b4168bd532b7..000000000000
--- a/sound/soc/zte/zx-spdif.c
+++ /dev/null
@@ -1,363 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2015 Linaro
- *
- * Author: Jun Nie <jun.nie@linaro.org>
- */
-
-#include <linux/clk.h>
-#include <linux/device.h>
-#include <linux/dmaengine.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of_address.h>
-#include <sound/asoundef.h>
-#include <sound/core.h>
-#include <sound/dmaengine_pcm.h>
-#include <sound/initval.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/soc-dai.h>
-
-#define ZX_CTRL 0x04
-#define ZX_FIFOCTRL 0x08
-#define ZX_INT_STATUS 0x10
-#define ZX_INT_MASK 0x14
-#define ZX_DATA 0x18
-#define ZX_VALID_BIT 0x1c
-#define ZX_CH_STA_1 0x20
-#define ZX_CH_STA_2 0x24
-#define ZX_CH_STA_3 0x28
-#define ZX_CH_STA_4 0x2c
-#define ZX_CH_STA_5 0x30
-#define ZX_CH_STA_6 0x34
-
-#define ZX_CTRL_MODA_16 (0 << 6)
-#define ZX_CTRL_MODA_18 BIT(6)
-#define ZX_CTRL_MODA_20 (2 << 6)
-#define ZX_CTRL_MODA_24 (3 << 6)
-#define ZX_CTRL_MODA_MASK (3 << 6)
-
-#define ZX_CTRL_ENB BIT(4)
-#define ZX_CTRL_DNB (0 << 4)
-#define ZX_CTRL_ENB_MASK BIT(4)
-
-#define ZX_CTRL_TX_OPEN BIT(0)
-#define ZX_CTRL_TX_CLOSE (0 << 0)
-#define ZX_CTRL_TX_MASK BIT(0)
-
-#define ZX_CTRL_OPEN (ZX_CTRL_TX_OPEN | ZX_CTRL_ENB)
-#define ZX_CTRL_CLOSE (ZX_CTRL_TX_CLOSE | ZX_CTRL_DNB)
-
-#define ZX_CTRL_DOUBLE_TRACK (0 << 8)
-#define ZX_CTRL_LEFT_TRACK BIT(8)
-#define ZX_CTRL_RIGHT_TRACK (2 << 8)
-#define ZX_CTRL_TRACK_MASK (3 << 8)
-
-#define ZX_FIFOCTRL_TXTH_MASK (0x1f << 8)
-#define ZX_FIFOCTRL_TXTH(x) (x << 8)
-#define ZX_FIFOCTRL_TX_DMA_EN BIT(2)
-#define ZX_FIFOCTRL_TX_DMA_DIS (0 << 2)
-#define ZX_FIFOCTRL_TX_DMA_EN_MASK BIT(2)
-#define ZX_FIFOCTRL_TX_FIFO_RST BIT(0)
-#define ZX_FIFOCTRL_TX_FIFO_RST_MASK BIT(0)
-
-#define ZX_VALID_DOUBLE_TRACK (0 << 0)
-#define ZX_VALID_LEFT_TRACK BIT(1)
-#define ZX_VALID_RIGHT_TRACK (2 << 0)
-#define ZX_VALID_TRACK_MASK (3 << 0)
-
-#define ZX_SPDIF_CLK_RAT (2 * 32)
-
-struct zx_spdif_info {
- struct snd_dmaengine_dai_dma_data dma_data;
- struct clk *dai_clk;
- void __iomem *reg_base;
- resource_size_t mapbase;
-};
-
-static int zx_spdif_dai_probe(struct snd_soc_dai *dai)
-{
- struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
-
- snd_soc_dai_set_drvdata(dai, zx_spdif);
- zx_spdif->dma_data.addr = zx_spdif->mapbase + ZX_DATA;
- zx_spdif->dma_data.maxburst = 8;
- snd_soc_dai_init_dma_data(dai, &zx_spdif->dma_data, NULL);
- return 0;
-}
-
-static int zx_spdif_chanstats(void __iomem *base, unsigned int rate)
-{
- u32 cstas1;
-
- switch (rate) {
- case 22050:
- cstas1 = IEC958_AES3_CON_FS_22050;
- break;
- case 24000:
- cstas1 = IEC958_AES3_CON_FS_24000;
- break;
- case 32000:
- cstas1 = IEC958_AES3_CON_FS_32000;
- break;
- case 44100:
- cstas1 = IEC958_AES3_CON_FS_44100;
- break;
- case 48000:
- cstas1 = IEC958_AES3_CON_FS_48000;
- break;
- case 88200:
- cstas1 = IEC958_AES3_CON_FS_88200;
- break;
- case 96000:
- cstas1 = IEC958_AES3_CON_FS_96000;
- break;
- case 176400:
- cstas1 = IEC958_AES3_CON_FS_176400;
- break;
- case 192000:
- cstas1 = IEC958_AES3_CON_FS_192000;
- break;
- default:
- return -EINVAL;
- }
- cstas1 = cstas1 << 24;
- cstas1 |= IEC958_AES0_CON_NOT_COPYRIGHT;
-
- writel_relaxed(cstas1, base + ZX_CH_STA_1);
- return 0;
-}
-
-static int zx_spdif_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *socdai)
-{
- struct zx_spdif_info *zx_spdif = dev_get_drvdata(socdai->dev);
- struct zx_spdif_info *spdif = snd_soc_dai_get_drvdata(socdai);
- struct snd_dmaengine_dai_dma_data *dma_data =
- snd_soc_dai_get_dma_data(socdai, substream);
- u32 val, ch_num, rate;
- int ret;
-
- dma_data->addr_width = params_width(params) >> 3;
-
- val = readl_relaxed(zx_spdif->reg_base + ZX_CTRL);
- val &= ~ZX_CTRL_MODA_MASK;
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S16_LE:
- val |= ZX_CTRL_MODA_16;
- break;
-
- case SNDRV_PCM_FORMAT_S18_3LE:
- val |= ZX_CTRL_MODA_18;
- break;
-
- case SNDRV_PCM_FORMAT_S20_3LE:
- val |= ZX_CTRL_MODA_20;
- break;
-
- case SNDRV_PCM_FORMAT_S24_LE:
- val |= ZX_CTRL_MODA_24;
- break;
- default:
- dev_err(socdai->dev, "Format not support!\n");
- return -EINVAL;
- }
-
- ch_num = params_channels(params);
- if (ch_num == 2)
- val |= ZX_CTRL_DOUBLE_TRACK;
- else
- val |= ZX_CTRL_LEFT_TRACK;
- writel_relaxed(val, zx_spdif->reg_base + ZX_CTRL);
-
- val = readl_relaxed(zx_spdif->reg_base + ZX_VALID_BIT);
- val &= ~ZX_VALID_TRACK_MASK;
- if (ch_num == 2)
- val |= ZX_VALID_DOUBLE_TRACK;
- else
- val |= ZX_VALID_RIGHT_TRACK;
- writel_relaxed(val, zx_spdif->reg_base + ZX_VALID_BIT);
-
- rate = params_rate(params);
- ret = zx_spdif_chanstats(zx_spdif->reg_base, rate);
- if (ret)
- return ret;
- return clk_set_rate(spdif->dai_clk, rate * ch_num * ZX_SPDIF_CLK_RAT);
-}
-
-static void zx_spdif_cfg_tx(void __iomem *base, int on)
-{
- u32 val;
-
- val = readl_relaxed(base + ZX_CTRL);
- val &= ~(ZX_CTRL_ENB_MASK | ZX_CTRL_TX_MASK);
- val |= on ? ZX_CTRL_OPEN : ZX_CTRL_CLOSE;
- writel_relaxed(val, base + ZX_CTRL);
-
- val = readl_relaxed(base + ZX_FIFOCTRL);
- val &= ~ZX_FIFOCTRL_TX_DMA_EN_MASK;
- if (on)
- val |= ZX_FIFOCTRL_TX_DMA_EN;
- writel_relaxed(val, base + ZX_FIFOCTRL);
-}
-
-static int zx_spdif_trigger(struct snd_pcm_substream *substream, int cmd,
- struct snd_soc_dai *dai)
-{
- u32 val;
- struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
- int ret = 0;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- val = readl_relaxed(zx_spdif->reg_base + ZX_FIFOCTRL);
- val |= ZX_FIFOCTRL_TX_FIFO_RST;
- writel_relaxed(val, zx_spdif->reg_base + ZX_FIFOCTRL);
- fallthrough;
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- zx_spdif_cfg_tx(zx_spdif->reg_base, true);
- break;
-
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- zx_spdif_cfg_tx(zx_spdif->reg_base, false);
- break;
-
- default:
- ret = -EINVAL;
- break;
- }
-
- return ret;
-}
-
-static int zx_spdif_startup(struct snd_pcm_substream *substream,
- struct snd_soc_dai *dai)
-{
- struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
-
- return clk_prepare_enable(zx_spdif->dai_clk);
-}
-
-static void zx_spdif_shutdown(struct snd_pcm_substream *substream,
- struct snd_soc_dai *dai)
-{
- struct zx_spdif_info *zx_spdif = dev_get_drvdata(dai->dev);
-
- clk_disable_unprepare(zx_spdif->dai_clk);
-}
-
-#define ZX_RATES \
- (SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
- SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |\
- SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
-
-#define ZX_FORMAT \
- (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE \
- | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)
-
-static const struct snd_soc_dai_ops zx_spdif_dai_ops = {
- .trigger = zx_spdif_trigger,
- .startup = zx_spdif_startup,
- .shutdown = zx_spdif_shutdown,
- .hw_params = zx_spdif_hw_params,
-};
-
-static struct snd_soc_dai_driver zx_spdif_dai = {
- .name = "spdif",
- .id = 0,
- .probe = zx_spdif_dai_probe,
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .rates = ZX_RATES,
- .formats = ZX_FORMAT,
- },
- .ops = &zx_spdif_dai_ops,
-};
-
-static const struct snd_soc_component_driver zx_spdif_component = {
- .name = "spdif",
-};
-
-static void zx_spdif_dev_init(void __iomem *base)
-{
- u32 val;
-
- writel_relaxed(0, base + ZX_CTRL);
- writel_relaxed(0, base + ZX_INT_MASK);
- writel_relaxed(0xf, base + ZX_INT_STATUS);
- writel_relaxed(0x1, base + ZX_FIFOCTRL);
-
- val = readl_relaxed(base + ZX_FIFOCTRL);
- val &= ~(ZX_FIFOCTRL_TXTH_MASK | ZX_FIFOCTRL_TX_FIFO_RST_MASK);
- val |= ZX_FIFOCTRL_TXTH(8);
- writel_relaxed(val, base + ZX_FIFOCTRL);
-}
-
-static int zx_spdif_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct zx_spdif_info *zx_spdif;
- int ret;
-
- zx_spdif = devm_kzalloc(&pdev->dev, sizeof(*zx_spdif), GFP_KERNEL);
- if (!zx_spdif)
- return -ENOMEM;
-
- zx_spdif->dai_clk = devm_clk_get(&pdev->dev, "tx");
- if (IS_ERR(zx_spdif->dai_clk)) {
- dev_err(&pdev->dev, "Fail to get clk\n");
- return PTR_ERR(zx_spdif->dai_clk);
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- zx_spdif->mapbase = res->start;
- zx_spdif->reg_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(zx_spdif->reg_base)) {
- return PTR_ERR(zx_spdif->reg_base);
- }
-
- zx_spdif_dev_init(zx_spdif->reg_base);
- platform_set_drvdata(pdev, zx_spdif);
-
- ret = devm_snd_soc_register_component(&pdev->dev, &zx_spdif_component,
- &zx_spdif_dai, 1);
- if (ret) {
- dev_err(&pdev->dev, "Register DAI failed: %d\n", ret);
- return ret;
- }
-
- ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
- if (ret)
- dev_err(&pdev->dev, "Register platform PCM failed: %d\n", ret);
-
- return ret;
-}
-
-static const struct of_device_id zx_spdif_dt_ids[] = {
- { .compatible = "zte,zx296702-spdif", },
- {}
-};
-MODULE_DEVICE_TABLE(of, zx_spdif_dt_ids);
-
-static struct platform_driver spdif_driver = {
- .probe = zx_spdif_probe,
- .driver = {
- .name = "zx-spdif",
- .of_match_table = zx_spdif_dt_ids,
- },
-};
-
-module_platform_driver(spdif_driver);
-
-MODULE_AUTHOR("Jun Nie <jun.nie@linaro.org>");
-MODULE_DESCRIPTION("ZTE SPDIF SoC DAI");
-MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.