diff options
Diffstat (limited to 'sound/soc/zte')
| -rw-r--r-- | sound/soc/zte/Kconfig | 26 | ||||
| -rw-r--r-- | sound/soc/zte/Makefile | 4 | ||||
| -rw-r--r-- | sound/soc/zte/zx-i2s.c | 452 | ||||
| -rw-r--r-- | sound/soc/zte/zx-spdif.c | 363 | ||||
| -rw-r--r-- | sound/soc/zte/zx-tdm.c | 458 |
5 files changed, 1303 insertions, 0 deletions
diff --git a/sound/soc/zte/Kconfig b/sound/soc/zte/Kconfig new file mode 100644 index 000000000..a23d4f13c --- /dev/null +++ b/sound/soc/zte/Kconfig @@ -0,0 +1,26 @@ +# SPDX-License-Identifier: GPL-2.0-only +config ZX_SPDIF + tristate "ZTE ZX SPDIF Driver Support" + depends on ARCH_ZX || COMPILE_TEST + depends on COMMON_CLK + select SND_SOC_GENERIC_DMAENGINE_PCM + help + Say Y or M if you want to add support for codecs attached to the + ZTE ZX SPDIF interface + +config ZX_I2S + tristate "ZTE ZX I2S Driver Support" + depends on ARCH_ZX || COMPILE_TEST + depends on COMMON_CLK + select SND_SOC_GENERIC_DMAENGINE_PCM + help + Say Y or M if you want to add support for codecs attached to the + ZTE ZX I2S interface + +config ZX_TDM + tristate "ZTE ZX TDM Driver Support" + depends on COMMON_CLK + select SND_SOC_GENERIC_DMAENGINE_PCM + help + Say Y or M if you want to add support for codecs attached to the + ZTE ZX TDM interface diff --git a/sound/soc/zte/Makefile b/sound/soc/zte/Makefile new file mode 100644 index 000000000..2f7cdefa4 --- /dev/null +++ b/sound/soc/zte/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_ZX_SPDIF) += zx-spdif.o +obj-$(CONFIG_ZX_I2S) += zx-i2s.o +obj-$(CONFIG_ZX_TDM) += zx-tdm.o diff --git a/sound/soc/zte/zx-i2s.c b/sound/soc/zte/zx-i2s.c new file mode 100644 index 000000000..1c1a44e08 --- /dev/null +++ b/sound/soc/zte/zx-i2s.c @@ -0,0 +1,452 @@ +// 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/init.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> + +#include <sound/core.h> +#include <sound/dmaengine_pcm.h> +#include <sound/initval.h> + +#define ZX_I2S_PROCESS_CTRL 0x04 +#define ZX_I2S_TIMING_CTRL 0x08 +#define ZX_I2S_FIFO_CTRL 0x0C +#define ZX_I2S_FIFO_STATUS 0x10 +#define ZX_I2S_INT_EN 0x14 +#define ZX_I2S_INT_STATUS 0x18 +#define ZX_I2S_DATA 0x1C +#define ZX_I2S_FRAME_CNTR 0x20 + +#define I2S_DEAGULT_FIFO_THRES (0x10) +#define I2S_MAX_FIFO_THRES (0x20) + +#define ZX_I2S_PROCESS_TX_EN (1 << 0) +#define ZX_I2S_PROCESS_TX_DIS (0 << 0) +#define ZX_I2S_PROCESS_RX_EN (1 << 1) +#define ZX_I2S_PROCESS_RX_DIS (0 << 1) +#define ZX_I2S_PROCESS_I2S_EN (1 << 2) +#define ZX_I2S_PROCESS_I2S_DIS (0 << 2) + +#define ZX_I2S_TIMING_MAST (1 << 0) +#define ZX_I2S_TIMING_SLAVE (0 << 0) +#define ZX_I2S_TIMING_MS_MASK (1 << 0) +#define ZX_I2S_TIMING_LOOP (1 << 1) +#define ZX_I2S_TIMING_NOR (0 << 1) +#define ZX_I2S_TIMING_LOOP_MASK (1 << 1) +#define ZX_I2S_TIMING_PTNR (1 << 2) +#define ZX_I2S_TIMING_NTPR (0 << 2) +#define ZX_I2S_TIMING_PHASE_MASK (1 << 2) +#define ZX_I2S_TIMING_TDM (1 << 3) +#define ZX_I2S_TIMING_I2S (0 << 3) +#define ZX_I2S_TIMING_TIMING_MASK (1 << 3) +#define ZX_I2S_TIMING_LONG_SYNC (1 << 4) +#define ZX_I2S_TIMING_SHORT_SYNC (0 << 4) +#define ZX_I2S_TIMING_SYNC_MASK (1 << 4) +#define ZX_I2S_TIMING_TEAK_EN (1 << 5) +#define ZX_I2S_TIMING_TEAK_DIS (0 << 5) +#define ZX_I2S_TIMING_TEAK_MASK (1 << 5) +#define ZX_I2S_TIMING_STD_I2S (0 << 6) +#define ZX_I2S_TIMING_MSB_JUSTIF (1 << 6) +#define ZX_I2S_TIMING_LSB_JUSTIF (2 << 6) +#define ZX_I2S_TIMING_ALIGN_MASK (3 << 6) +#define ZX_I2S_TIMING_CHN_MASK (7 << 8) +#define ZX_I2S_TIMING_CHN(x) ((x - 1) << 8) +#define ZX_I2S_TIMING_LANE_MASK (3 << 11) +#define ZX_I2S_TIMING_LANE(x) ((x - 1) << 11) +#define ZX_I2S_TIMING_TSCFG_MASK (7 << 13) +#define ZX_I2S_TIMING_TSCFG(x) (x << 13) +#define ZX_I2S_TIMING_TS_WIDTH_MASK (0x1f << 16) +#define ZX_I2S_TIMING_TS_WIDTH(x) ((x - 1) << 16) +#define ZX_I2S_TIMING_DATA_SIZE_MASK (0x1f << 21) +#define ZX_I2S_TIMING_DATA_SIZE(x) ((x - 1) << 21) +#define ZX_I2S_TIMING_CFG_ERR_MASK (1 << 31) + +#define ZX_I2S_FIFO_CTRL_TX_RST (1 << 0) +#define ZX_I2S_FIFO_CTRL_TX_RST_MASK (1 << 0) +#define ZX_I2S_FIFO_CTRL_RX_RST (1 << 1) +#define ZX_I2S_FIFO_CTRL_RX_RST_MASK (1 << 1) +#define ZX_I2S_FIFO_CTRL_TX_DMA_EN (1 << 4) +#define ZX_I2S_FIFO_CTRL_TX_DMA_DIS (0 << 4) +#define ZX_I2S_FIFO_CTRL_TX_DMA_MASK (1 << 4) +#define ZX_I2S_FIFO_CTRL_RX_DMA_EN (1 << 5) +#define ZX_I2S_FIFO_CTRL_RX_DMA_DIS (0 << 5) +#define ZX_I2S_FIFO_CTRL_RX_DMA_MASK (1 << 5) +#define ZX_I2S_FIFO_CTRL_TX_THRES_MASK (0x1F << 8) +#define ZX_I2S_FIFO_CTRL_RX_THRES_MASK (0x1F << 16) + +#define CLK_RAT (32 * 4) + +struct zx_i2s_info { + struct snd_dmaengine_dai_dma_data dma_playback; + struct snd_dmaengine_dai_dma_data dma_capture; + struct clk *dai_wclk; + struct clk *dai_pclk; + void __iomem *reg_base; + int master; + resource_size_t mapbase; +}; + +static void zx_i2s_tx_en(void __iomem *base, bool on) +{ + unsigned long val; + + val = readl_relaxed(base + ZX_I2S_PROCESS_CTRL); + if (on) + val |= ZX_I2S_PROCESS_TX_EN | ZX_I2S_PROCESS_I2S_EN; + else + val &= ~(ZX_I2S_PROCESS_TX_EN | ZX_I2S_PROCESS_I2S_EN); + writel_relaxed(val, base + ZX_I2S_PROCESS_CTRL); +} + +static void zx_i2s_rx_en(void __iomem *base, bool on) +{ + unsigned long val; + + val = readl_relaxed(base + ZX_I2S_PROCESS_CTRL); + if (on) + val |= ZX_I2S_PROCESS_RX_EN | ZX_I2S_PROCESS_I2S_EN; + else + val &= ~(ZX_I2S_PROCESS_RX_EN | ZX_I2S_PROCESS_I2S_EN); + writel_relaxed(val, base + ZX_I2S_PROCESS_CTRL); +} + +static void zx_i2s_tx_dma_en(void __iomem *base, bool on) +{ + unsigned long val; + + val = readl_relaxed(base + ZX_I2S_FIFO_CTRL); + val |= ZX_I2S_FIFO_CTRL_TX_RST | (I2S_DEAGULT_FIFO_THRES << 8); + if (on) + val |= ZX_I2S_FIFO_CTRL_TX_DMA_EN; + else + val &= ~ZX_I2S_FIFO_CTRL_TX_DMA_EN; + writel_relaxed(val, base + ZX_I2S_FIFO_CTRL); +} + +static void zx_i2s_rx_dma_en(void __iomem *base, bool on) +{ + unsigned long val; + + val = readl_relaxed(base + ZX_I2S_FIFO_CTRL); + val |= ZX_I2S_FIFO_CTRL_RX_RST | (I2S_DEAGULT_FIFO_THRES << 16); + if (on) + val |= ZX_I2S_FIFO_CTRL_RX_DMA_EN; + else + val &= ~ZX_I2S_FIFO_CTRL_RX_DMA_EN; + writel_relaxed(val, base + ZX_I2S_FIFO_CTRL); +} + +#define ZX_I2S_RATES \ + (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \ + 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_I2S_FMTBIT \ + (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + +static int zx_i2s_dai_probe(struct snd_soc_dai *dai) +{ + struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev); + + snd_soc_dai_set_drvdata(dai, zx_i2s); + zx_i2s->dma_playback.addr = zx_i2s->mapbase + ZX_I2S_DATA; + zx_i2s->dma_playback.maxburst = 16; + zx_i2s->dma_capture.addr = zx_i2s->mapbase + ZX_I2S_DATA; + zx_i2s->dma_capture.maxburst = 16; + snd_soc_dai_init_dma_data(dai, &zx_i2s->dma_playback, + &zx_i2s->dma_capture); + return 0; +} + +static int zx_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) +{ + struct zx_i2s_info *i2s = snd_soc_dai_get_drvdata(cpu_dai); + unsigned long val; + + val = readl_relaxed(i2s->reg_base + ZX_I2S_TIMING_CTRL); + val &= ~(ZX_I2S_TIMING_TIMING_MASK | ZX_I2S_TIMING_ALIGN_MASK | + ZX_I2S_TIMING_TEAK_MASK | ZX_I2S_TIMING_SYNC_MASK | + ZX_I2S_TIMING_MS_MASK); + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + val |= (ZX_I2S_TIMING_I2S | ZX_I2S_TIMING_STD_I2S); + break; + case SND_SOC_DAIFMT_LEFT_J: + val |= (ZX_I2S_TIMING_I2S | ZX_I2S_TIMING_MSB_JUSTIF); + break; + case SND_SOC_DAIFMT_RIGHT_J: + val |= (ZX_I2S_TIMING_I2S | ZX_I2S_TIMING_LSB_JUSTIF); + break; + default: + dev_err(cpu_dai->dev, "Unknown i2s timing\n"); + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + /* Codec is master, and I2S is slave. */ + i2s->master = 0; + val |= ZX_I2S_TIMING_SLAVE; + break; + case SND_SOC_DAIFMT_CBS_CFS: + /* Codec is slave, and I2S is master. */ + i2s->master = 1; + val |= ZX_I2S_TIMING_MAST; + break; + default: + dev_err(cpu_dai->dev, "Unknown master/slave format\n"); + return -EINVAL; + } + + writel_relaxed(val, i2s->reg_base + ZX_I2S_TIMING_CTRL); + return 0; +} + +static int zx_i2s_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *socdai) +{ + struct zx_i2s_info *i2s = snd_soc_dai_get_drvdata(socdai); + struct snd_dmaengine_dai_dma_data *dma_data; + unsigned int lane, ch_num, len, ret = 0; + unsigned int ts_width = 32; + unsigned long val; + unsigned long chn_cfg; + + dma_data = snd_soc_dai_get_dma_data(socdai, substream); + dma_data->addr_width = ts_width >> 3; + + val = readl_relaxed(i2s->reg_base + ZX_I2S_TIMING_CTRL); + val &= ~(ZX_I2S_TIMING_TS_WIDTH_MASK | ZX_I2S_TIMING_DATA_SIZE_MASK | + ZX_I2S_TIMING_LANE_MASK | ZX_I2S_TIMING_CHN_MASK | + ZX_I2S_TIMING_TSCFG_MASK); + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + len = 16; + break; + case SNDRV_PCM_FORMAT_S24_LE: + len = 24; + break; + case SNDRV_PCM_FORMAT_S32_LE: + len = 32; + break; + default: + dev_err(socdai->dev, "Unknown data format\n"); + return -EINVAL; + } + val |= ZX_I2S_TIMING_TS_WIDTH(ts_width) | ZX_I2S_TIMING_DATA_SIZE(len); + + ch_num = params_channels(params); + switch (ch_num) { + case 1: + lane = 1; + chn_cfg = 2; + break; + case 2: + case 4: + case 6: + case 8: + lane = ch_num / 2; + chn_cfg = 3; + break; + default: + dev_err(socdai->dev, "Not support channel num %d\n", ch_num); + return -EINVAL; + } + val |= ZX_I2S_TIMING_LANE(lane); + val |= ZX_I2S_TIMING_TSCFG(chn_cfg); + val |= ZX_I2S_TIMING_CHN(ch_num); + writel_relaxed(val, i2s->reg_base + ZX_I2S_TIMING_CTRL); + + if (i2s->master) + ret = clk_set_rate(i2s->dai_wclk, + params_rate(params) * ch_num * CLK_RAT); + + return ret; +} + +static int zx_i2s_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev); + int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + if (capture) + zx_i2s_rx_dma_en(zx_i2s->reg_base, true); + else + zx_i2s_tx_dma_en(zx_i2s->reg_base, true); + fallthrough; + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (capture) + zx_i2s_rx_en(zx_i2s->reg_base, true); + else + zx_i2s_tx_en(zx_i2s->reg_base, true); + break; + + case SNDRV_PCM_TRIGGER_STOP: + if (capture) + zx_i2s_rx_dma_en(zx_i2s->reg_base, false); + else + zx_i2s_tx_dma_en(zx_i2s->reg_base, false); + fallthrough; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (capture) + zx_i2s_rx_en(zx_i2s->reg_base, false); + else + zx_i2s_tx_en(zx_i2s->reg_base, false); + break; + + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int zx_i2s_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev); + int ret; + + ret = clk_prepare_enable(zx_i2s->dai_wclk); + if (ret) + return ret; + + ret = clk_prepare_enable(zx_i2s->dai_pclk); + if (ret) { + clk_disable_unprepare(zx_i2s->dai_wclk); + return ret; + } + + return ret; +} + +static void zx_i2s_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev); + + clk_disable_unprepare(zx_i2s->dai_wclk); + clk_disable_unprepare(zx_i2s->dai_pclk); +} + +static const struct snd_soc_dai_ops zx_i2s_dai_ops = { + .trigger = zx_i2s_trigger, + .hw_params = zx_i2s_hw_params, + .set_fmt = zx_i2s_set_fmt, + .startup = zx_i2s_startup, + .shutdown = zx_i2s_shutdown, +}; + +static const struct snd_soc_component_driver zx_i2s_component = { + .name = "zx-i2s", +}; + +static struct snd_soc_dai_driver zx_i2s_dai = { + .name = "zx-i2s-dai", + .id = 0, + .probe = zx_i2s_dai_probe, + .playback = { + .channels_min = 1, + .channels_max = 8, + .rates = ZX_I2S_RATES, + .formats = ZX_I2S_FMTBIT, + }, + .capture = { + .channels_min = 1, + .channels_max = 2, + .rates = ZX_I2S_RATES, + .formats = ZX_I2S_FMTBIT, + }, + .ops = &zx_i2s_dai_ops, +}; + +static int zx_i2s_probe(struct platform_device *pdev) +{ + struct resource *res; + struct zx_i2s_info *zx_i2s; + int ret; + + zx_i2s = devm_kzalloc(&pdev->dev, sizeof(*zx_i2s), GFP_KERNEL); + if (!zx_i2s) + return -ENOMEM; + + zx_i2s->dai_wclk = devm_clk_get(&pdev->dev, "wclk"); + if (IS_ERR(zx_i2s->dai_wclk)) { + dev_err(&pdev->dev, "Fail to get wclk\n"); + return PTR_ERR(zx_i2s->dai_wclk); + } + + zx_i2s->dai_pclk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(zx_i2s->dai_pclk)) { + dev_err(&pdev->dev, "Fail to get pclk\n"); + return PTR_ERR(zx_i2s->dai_pclk); + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + zx_i2s->mapbase = res->start; + zx_i2s->reg_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(zx_i2s->reg_base)) { + dev_err(&pdev->dev, "ioremap failed!\n"); + return PTR_ERR(zx_i2s->reg_base); + } + + writel_relaxed(0, zx_i2s->reg_base + ZX_I2S_FIFO_CTRL); + platform_set_drvdata(pdev, zx_i2s); + + ret = devm_snd_soc_register_component(&pdev->dev, &zx_i2s_component, + &zx_i2s_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_i2s_dt_ids[] = { + { .compatible = "zte,zx296702-i2s", }, + {} +}; +MODULE_DEVICE_TABLE(of, zx_i2s_dt_ids); + +static struct platform_driver i2s_driver = { + .probe = zx_i2s_probe, + .driver = { + .name = "zx-i2s", + .of_match_table = zx_i2s_dt_ids, + }, +}; + +module_platform_driver(i2s_driver); + +MODULE_AUTHOR("Jun Nie <jun.nie@linaro.org>"); +MODULE_DESCRIPTION("ZTE I2S SoC DAI"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/zte/zx-spdif.c b/sound/soc/zte/zx-spdif.c new file mode 100644 index 000000000..b4168bd53 --- /dev/null +++ b/sound/soc/zte/zx-spdif.c @@ -0,0 +1,363 @@ +// 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"); diff --git a/sound/soc/zte/zx-tdm.c b/sound/soc/zte/zx-tdm.c new file mode 100644 index 000000000..4f787185d --- /dev/null +++ b/sound/soc/zte/zx-tdm.c @@ -0,0 +1,458 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ZTE's TDM driver + * + * Copyright (C) 2017 ZTE Ltd + * + * Author: Baoyou Xie <baoyou.xie@linaro.org> + */ + +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <sound/dmaengine_pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> + +#define REG_TIMING_CTRL 0x04 +#define REG_TX_FIFO_CTRL 0x0C +#define REG_RX_FIFO_CTRL 0x10 +#define REG_INT_EN 0x1C +#define REG_INT_STATUS 0x20 +#define REG_DATABUF 0x24 +#define REG_TS_MASK0 0x44 +#define REG_PROCESS_CTRL 0x54 + +#define FIFO_CTRL_TX_RST BIT(0) +#define FIFO_CTRL_RX_RST BIT(0) +#define DEAGULT_FIFO_THRES GENMASK(4, 2) + +#define FIFO_CTRL_TX_DMA_EN BIT(1) +#define FIFO_CTRL_RX_DMA_EN BIT(1) + +#define TX_FIFO_RST_MASK BIT(0) +#define RX_FIFO_RST_MASK BIT(0) + +#define FIFOCTRL_TX_FIFO_RST BIT(0) +#define FIFOCTRL_RX_FIFO_RST BIT(0) + +#define TXTH_MASK GENMASK(5, 2) +#define RXTH_MASK GENMASK(5, 2) + +#define FIFOCTRL_THRESHOLD(x) ((x) << 2) + +#define TIMING_MS_MASK BIT(1) +/* + * 00: 8 clk cycles every timeslot + * 01: 16 clk cycles every timeslot + * 10: 32 clk cycles every timeslot + */ +#define TIMING_SYNC_WIDTH_MASK GENMASK(6, 5) +#define TIMING_WIDTH_SHIFT 5 +#define TIMING_DEFAULT_WIDTH 0 +#define TIMING_TS_WIDTH(x) ((x) << TIMING_WIDTH_SHIFT) +#define TIMING_WIDTH_FACTOR 8 + +#define TIMING_MASTER_MODE BIT(21) +#define TIMING_LSB_FIRST BIT(20) +#define TIMING_TS_NUM(x) (((x) - 1) << 7) +#define TIMING_CLK_SEL_MASK GENMASK(2, 0) +#define TIMING_CLK_SEL_DEF BIT(2) + +#define PROCESS_TX_EN BIT(0) +#define PROCESS_RX_EN BIT(1) +#define PROCESS_TDM_EN BIT(2) +#define PROCESS_DISABLE_ALL 0 + +#define INT_DISABLE_ALL 0 +#define INT_STATUS_MASK GENMASK(6, 0) + +struct zx_tdm_info { + struct snd_dmaengine_dai_dma_data dma_playback; + struct snd_dmaengine_dai_dma_data dma_capture; + resource_size_t phy_addr; + void __iomem *regbase; + struct clk *dai_wclk; + struct clk *dai_pclk; + int master; + struct device *dev; +}; + +static inline u32 zx_tdm_readl(struct zx_tdm_info *tdm, u16 reg) +{ + return readl_relaxed(tdm->regbase + reg); +} + +static inline void zx_tdm_writel(struct zx_tdm_info *tdm, u16 reg, u32 val) +{ + writel_relaxed(val, tdm->regbase + reg); +} + +static void zx_tdm_tx_en(struct zx_tdm_info *tdm, bool on) +{ + unsigned long val; + + val = zx_tdm_readl(tdm, REG_PROCESS_CTRL); + if (on) + val |= PROCESS_TX_EN | PROCESS_TDM_EN; + else + val &= ~(PROCESS_TX_EN | PROCESS_TDM_EN); + zx_tdm_writel(tdm, REG_PROCESS_CTRL, val); +} + +static void zx_tdm_rx_en(struct zx_tdm_info *tdm, bool on) +{ + unsigned long val; + + val = zx_tdm_readl(tdm, REG_PROCESS_CTRL); + if (on) + val |= PROCESS_RX_EN | PROCESS_TDM_EN; + else + val &= ~(PROCESS_RX_EN | PROCESS_TDM_EN); + zx_tdm_writel(tdm, REG_PROCESS_CTRL, val); +} + +static void zx_tdm_tx_dma_en(struct zx_tdm_info *tdm, bool on) +{ + unsigned long val; + + val = zx_tdm_readl(tdm, REG_TX_FIFO_CTRL); + val |= FIFO_CTRL_TX_RST | DEAGULT_FIFO_THRES; + if (on) + val |= FIFO_CTRL_TX_DMA_EN; + else + val &= ~FIFO_CTRL_TX_DMA_EN; + zx_tdm_writel(tdm, REG_TX_FIFO_CTRL, val); +} + +static void zx_tdm_rx_dma_en(struct zx_tdm_info *tdm, bool on) +{ + unsigned long val; + + val = zx_tdm_readl(tdm, REG_RX_FIFO_CTRL); + val |= FIFO_CTRL_RX_RST | DEAGULT_FIFO_THRES; + if (on) + val |= FIFO_CTRL_RX_DMA_EN; + else + val &= ~FIFO_CTRL_RX_DMA_EN; + zx_tdm_writel(tdm, REG_RX_FIFO_CTRL, val); +} + +#define ZX_TDM_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000) + +#define ZX_TDM_FMTBIT \ + (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_MU_LAW | \ + SNDRV_PCM_FMTBIT_A_LAW) + +static int zx_tdm_dai_probe(struct snd_soc_dai *dai) +{ + struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev); + + snd_soc_dai_set_drvdata(dai, zx_tdm); + zx_tdm->dma_playback.addr = zx_tdm->phy_addr + REG_DATABUF; + zx_tdm->dma_playback.maxburst = 16; + zx_tdm->dma_capture.addr = zx_tdm->phy_addr + REG_DATABUF; + zx_tdm->dma_capture.maxburst = 16; + snd_soc_dai_init_dma_data(dai, &zx_tdm->dma_playback, + &zx_tdm->dma_capture); + return 0; +} + +static int zx_tdm_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) +{ + struct zx_tdm_info *tdm = snd_soc_dai_get_drvdata(cpu_dai); + unsigned long val; + + val = zx_tdm_readl(tdm, REG_TIMING_CTRL); + val &= ~(TIMING_SYNC_WIDTH_MASK | TIMING_MS_MASK); + val |= TIMING_DEFAULT_WIDTH << TIMING_WIDTH_SHIFT; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + tdm->master = 1; + val |= TIMING_MASTER_MODE; + break; + case SND_SOC_DAIFMT_CBS_CFS: + tdm->master = 0; + val &= ~TIMING_MASTER_MODE; + break; + default: + dev_err(cpu_dai->dev, "Unknown master/slave format\n"); + return -EINVAL; + } + + + zx_tdm_writel(tdm, REG_TIMING_CTRL, val); + + return 0; +} + +static int zx_tdm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *socdai) +{ + struct zx_tdm_info *tdm = snd_soc_dai_get_drvdata(socdai); + struct snd_dmaengine_dai_dma_data *dma_data; + unsigned int ts_width = TIMING_DEFAULT_WIDTH; + unsigned int ch_num = 32; + unsigned int mask = 0; + unsigned int ret = 0; + unsigned long val; + + dma_data = snd_soc_dai_get_dma_data(socdai, substream); + dma_data->addr_width = ch_num >> 3; + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_MU_LAW: + case SNDRV_PCM_FORMAT_A_LAW: + case SNDRV_PCM_FORMAT_S16_LE: + ts_width = 1; + break; + default: + dev_err(socdai->dev, "Unknown data format\n"); + return -EINVAL; + } + + val = zx_tdm_readl(tdm, REG_TIMING_CTRL); + val |= TIMING_TS_WIDTH(ts_width) | TIMING_TS_NUM(1); + zx_tdm_writel(tdm, REG_TIMING_CTRL, val); + zx_tdm_writel(tdm, REG_TS_MASK0, mask); + + if (tdm->master) + ret = clk_set_rate(tdm->dai_wclk, + params_rate(params) * TIMING_WIDTH_FACTOR * ch_num); + + return ret; +} + +static int zx_tdm_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); + struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev); + unsigned int val; + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + if (capture) { + val = zx_tdm_readl(zx_tdm, REG_RX_FIFO_CTRL); + val |= FIFOCTRL_RX_FIFO_RST; + zx_tdm_writel(zx_tdm, REG_RX_FIFO_CTRL, val); + + zx_tdm_rx_dma_en(zx_tdm, true); + } else { + val = zx_tdm_readl(zx_tdm, REG_TX_FIFO_CTRL); + val |= FIFOCTRL_TX_FIFO_RST; + zx_tdm_writel(zx_tdm, REG_TX_FIFO_CTRL, val); + + zx_tdm_tx_dma_en(zx_tdm, true); + } + break; + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (capture) + zx_tdm_rx_en(zx_tdm, true); + else + zx_tdm_tx_en(zx_tdm, true); + break; + case SNDRV_PCM_TRIGGER_STOP: + if (capture) + zx_tdm_rx_dma_en(zx_tdm, false); + else + zx_tdm_tx_dma_en(zx_tdm, false); + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (capture) + zx_tdm_rx_en(zx_tdm, false); + else + zx_tdm_tx_en(zx_tdm, false); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int zx_tdm_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev); + int ret; + + ret = clk_prepare_enable(zx_tdm->dai_wclk); + if (ret) + return ret; + + ret = clk_prepare_enable(zx_tdm->dai_pclk); + if (ret) { + clk_disable_unprepare(zx_tdm->dai_wclk); + return ret; + } + + return 0; +} + +static void zx_tdm_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct zx_tdm_info *zx_tdm = dev_get_drvdata(dai->dev); + + clk_disable_unprepare(zx_tdm->dai_pclk); + clk_disable_unprepare(zx_tdm->dai_wclk); +} + +static const struct snd_soc_dai_ops zx_tdm_dai_ops = { + .trigger = zx_tdm_trigger, + .hw_params = zx_tdm_hw_params, + .set_fmt = zx_tdm_set_fmt, + .startup = zx_tdm_startup, + .shutdown = zx_tdm_shutdown, +}; + +static const struct snd_soc_component_driver zx_tdm_component = { + .name = "zx-tdm", +}; + +static void zx_tdm_init_state(struct zx_tdm_info *tdm) +{ + unsigned int val; + + zx_tdm_writel(tdm, REG_PROCESS_CTRL, PROCESS_DISABLE_ALL); + + val = zx_tdm_readl(tdm, REG_TIMING_CTRL); + val |= TIMING_LSB_FIRST; + val &= ~TIMING_CLK_SEL_MASK; + val |= TIMING_CLK_SEL_DEF; + zx_tdm_writel(tdm, REG_TIMING_CTRL, val); + + zx_tdm_writel(tdm, REG_INT_EN, INT_DISABLE_ALL); + /* + * write INT_STATUS register to clear it. + */ + zx_tdm_writel(tdm, REG_INT_STATUS, INT_STATUS_MASK); + zx_tdm_writel(tdm, REG_RX_FIFO_CTRL, FIFOCTRL_RX_FIFO_RST); + zx_tdm_writel(tdm, REG_TX_FIFO_CTRL, FIFOCTRL_TX_FIFO_RST); + + val = zx_tdm_readl(tdm, REG_RX_FIFO_CTRL); + val &= ~(RXTH_MASK | RX_FIFO_RST_MASK); + val |= FIFOCTRL_THRESHOLD(8); + zx_tdm_writel(tdm, REG_RX_FIFO_CTRL, val); + + val = zx_tdm_readl(tdm, REG_TX_FIFO_CTRL); + val &= ~(TXTH_MASK | TX_FIFO_RST_MASK); + val |= FIFOCTRL_THRESHOLD(8); + zx_tdm_writel(tdm, REG_TX_FIFO_CTRL, val); +} + +static struct snd_soc_dai_driver zx_tdm_dai = { + .name = "zx-tdm-dai", + .id = 0, + .probe = zx_tdm_dai_probe, + .playback = { + .channels_min = 1, + .channels_max = 4, + .rates = ZX_TDM_RATES, + .formats = ZX_TDM_FMTBIT, + }, + .capture = { + .channels_min = 1, + .channels_max = 4, + .rates = ZX_TDM_RATES, + .formats = ZX_TDM_FMTBIT, + }, + .ops = &zx_tdm_dai_ops, +}; + +static int zx_tdm_probe(struct platform_device *pdev) +{ + struct of_phandle_args out_args; + unsigned int dma_reg_offset; + struct zx_tdm_info *zx_tdm; + unsigned int dma_mask; + struct resource *res; + struct regmap *regmap_sysctrl; + int ret; + + zx_tdm = devm_kzalloc(&pdev->dev, sizeof(*zx_tdm), GFP_KERNEL); + if (!zx_tdm) + return -ENOMEM; + + zx_tdm->dev = &pdev->dev; + + zx_tdm->dai_wclk = devm_clk_get(&pdev->dev, "wclk"); + if (IS_ERR(zx_tdm->dai_wclk)) { + dev_err(&pdev->dev, "Fail to get wclk\n"); + return PTR_ERR(zx_tdm->dai_wclk); + } + + zx_tdm->dai_pclk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(zx_tdm->dai_pclk)) { + dev_err(&pdev->dev, "Fail to get pclk\n"); + return PTR_ERR(zx_tdm->dai_pclk); + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + zx_tdm->phy_addr = res->start; + zx_tdm->regbase = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(zx_tdm->regbase)) + return PTR_ERR(zx_tdm->regbase); + + ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node, + "zte,tdm-dma-sysctrl", 2, 0, &out_args); + if (ret) { + dev_err(&pdev->dev, "Fail to get zte,tdm-dma-sysctrl\n"); + return ret; + } + + dma_reg_offset = out_args.args[0]; + dma_mask = out_args.args[1]; + regmap_sysctrl = syscon_node_to_regmap(out_args.np); + if (IS_ERR(regmap_sysctrl)) { + of_node_put(out_args.np); + return PTR_ERR(regmap_sysctrl); + } + + regmap_update_bits(regmap_sysctrl, dma_reg_offset, dma_mask, dma_mask); + of_node_put(out_args.np); + + zx_tdm_init_state(zx_tdm); + platform_set_drvdata(pdev, zx_tdm); + + ret = devm_snd_soc_register_component(&pdev->dev, &zx_tdm_component, + &zx_tdm_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_tdm_dt_ids[] = { + { .compatible = "zte,zx296718-tdm", }, + {} +}; +MODULE_DEVICE_TABLE(of, zx_tdm_dt_ids); + +static struct platform_driver tdm_driver = { + .probe = zx_tdm_probe, + .driver = { + .name = "zx-tdm", + .of_match_table = zx_tdm_dt_ids, + }, +}; +module_platform_driver(tdm_driver); + +MODULE_AUTHOR("Baoyou Xie <baoyou.xie@linaro.org>"); +MODULE_DESCRIPTION("ZTE TDM DAI driver"); +MODULE_LICENSE("GPL v2"); |