ASoC: remove zte zx drivers

The zte zx platform is getting removed, so this driver is no
longer needed.

Cc: Jun Nie <jun.nie@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210120162553.21666-3-arnd@kernel.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/zte,tdm.txt

-ZTE TDM DAI driver
-
-Required properties:
-
-- compatible : should be one of the following.
-       * zte,zx296718-tdm
-- reg : physical base address of the controller and length of memory mapped
-    region.
-- clocks : Pairs of phandle and specifier referencing the controller's clocks.
-- clock-names: "wclk" for the wclk.
-               "pclk" for the pclk.
--#clock-cells: should be 1.
-- zte,tdm-dma-sysctrl : Reference to the sysctrl controller controlling
-    the dma. includes:
-	phandle of sysctrl.
-	register offset in sysctrl for control dma.
-	mask of the register that be written to sysctrl.
-
-Example:
-
-	tdm: tdm@1487000 {
-		compatible = "zte,zx296718-tdm";
-		reg = <0x01487000 0x1000>;
-		clocks = <&audiocrm AUDIO_TDM_WCLK>, <&audiocrm AUDIO_TDM_PCLK>;
-		clock-names = "wclk", "pclk";
-		#clock-cells = <1>;
-		pinctrl-names = "default";
-		pinctrl-0 = <&tdm_global_pin>;
-		zte,tdm-dma-sysctrl = <&sysctrl 0x10c 4>;
-	};

Documentation/devicetree/bindings/sound/zte,zx-aud96p22.txt

-ZTE ZX AUD96P22 Audio Codec
-
-Required properties:
- - compatible: Must be "zte,zx-aud96p22"
- - #sound-dai-cells: Should be 0
- - reg: I2C bus slave address of AUD96P22
-
-Example:
-
-	i2c0: i2c@1486000 {
-		compatible = "zte,zx296718-i2c";
-		reg = <0x01486000 0x1000>;
-		interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		clocks = <&audiocrm AUDIO_I2C0_WCLK>;
-		clock-frequency = <1600000>;
-
-		aud96p22: codec@22 {
-			compatible = "zte,zx-aud96p22";
-			#sound-dai-cells = <0>;
-			reg = <0x22>;
-		};
-	};

Documentation/devicetree/bindings/sound/zte,zx-i2s.txt

-ZTE ZX296702 I2S controller
-
-Required properties:
- - compatible : Must be one of:
-	"zte,zx296718-i2s", "zte,zx296702-i2s"
-	"zte,zx296702-i2s"
- - reg : Must contain I2S core's registers location and length
- - clocks : Pairs of phandle and specifier referencing the controller's clocks.
- - clock-names: "wclk" for the wclk, "pclk" for the pclk to the I2S interface.
- - dmas: Pairs of phandle and specifier for the DMA channel that is used by
-   the core. The core expects two dma channels for transmit.
- - dma-names : Must be "tx" and "rx"
-
-For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties
-please check:
-	* resource-names.txt
-	* clock/clock-bindings.txt
-	* dma/dma.txt
-
-Example:
-	i2s0: i2s@b005000 {
-		#sound-dai-cells = <0>;
-		compatible = "zte,zx296718-i2s", "zte,zx296702-i2s";
-		reg = <0x0b005000 0x1000>;
-		clocks = <&audiocrm AUDIO_I2S0_WCLK>, <&audiocrm AUDIO_I2S0_PCLK>;
-		clock-names = "wclk", "pclk";
-		interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;
-		dmas = <&dma 5>, <&dma 6>;
-		dma-names = "tx", "rx";
-	};
-
-	sound {
-		compatible = "simple-audio-card";
-		simple-audio-card,name = "zx296702_snd";
-		simple-audio-card,format = "left_j";
-		simple-audio-card,bitclock-master = <&sndcodec>;
-		simple-audio-card,frame-master = <&sndcodec>;
-		sndcpu: simple-audio-card,cpu {
-			sound-dai = <&i2s0>;
-		};
-
-		sndcodec: simple-audio-card,codec {
-			sound-dai = <&acodec>;
-		};
-	};

Documentation/devicetree/bindings/sound/zte,zx-spdif.txt

-ZTE ZX296702 SPDIF controller
-
-Required properties:
- - compatible : Must be "zte,zx296702-spdif"
- - reg : Must contain SPDIF core's registers location and length
- - clocks : Pairs of phandle and specifier referencing the controller's clocks.
- - clock-names: "tx" for the clock to the SPDIF interface.
- - dmas: Pairs of phandle and specifier for the DMA channel that is used by
-   the core. The core expects one dma channel for transmit.
- - dma-names : Must be "tx"
-
-For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties
-please check:
-	* resource-names.txt
-	* clock/clock-bindings.txt
-	* dma/dma.txt
-
-Example:
-	spdif0: spdif0@b004000 {
-		compatible = "zte,zx296702-spdif";
-		reg = <0x0b004000 0x1000>;
-		clocks = <&lsp0clk ZX296702_SPDIF0_DIV>;
-		clock-names = "tx";
-		interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
-		dmas = <&dma 4>;
-		dma-names = "tx";
-	};

sound/soc/Kconfig

@@ -74,7 +74,6 @@ source "sound/soc/uniphier/Kconfig"
 source "sound/soc/ux500/Kconfig"
 source "sound/soc/xilinx/Kconfig"
 source "sound/soc/xtensa/Kconfig"
-source "sound/soc/zte/Kconfig"
 
 # Supported codecs
 source "sound/soc/codecs/Kconfig"

sound/soc/Makefile

@@ -57,4 +57,3 @@ obj-$(CONFIG_SND_SOC)	+= uniphier/
 obj-$(CONFIG_SND_SOC)	+= ux500/
 obj-$(CONFIG_SND_SOC)	+= xilinx/
 obj-$(CONFIG_SND_SOC)	+= xtensa/
-obj-$(CONFIG_SND_SOC)	+= zte/

sound/soc/codecs/Makefile

@@ -301,7 +301,6 @@ snd-soc-wm9713-objs := wm9713.o
 snd-soc-wm-hubs-objs := wm_hubs.o
 snd-soc-wsa881x-objs := wsa881x.o
 snd-soc-zl38060-objs := zl38060.o
-snd-soc-zx-aud96p22-objs := zx_aud96p22.o
 # Amp
 snd-soc-max9877-objs := max9877.o
 snd-soc-max98504-objs := max98504.o
@@ -616,7 +615,6 @@ obj-$(CONFIG_SND_SOC_WM_ADSP)	+= snd-soc-wm-adsp.o
 obj-$(CONFIG_SND_SOC_WM_HUBS)	+= snd-soc-wm-hubs.o
 obj-$(CONFIG_SND_SOC_WSA881X)	+= snd-soc-wsa881x.o
 obj-$(CONFIG_SND_SOC_ZL38060)	+= snd-soc-zl38060.o
-obj-$(CONFIG_SND_SOC_ZX_AUD96P22) += snd-soc-zx-aud96p22.o
 
 # Amp
 obj-$(CONFIG_SND_SOC_MAX9877)	+= snd-soc-max9877.o

sound/soc/zte/Kconfig

-# 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

sound/soc/zte/Makefile

-# 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

sound/soc/zte/zx-spdif.c

-// 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");