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path: root/sound/soc/qcom/lpass-sc7280.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
 *
 * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
 */

#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/pm.h>

#include <dt-bindings/sound/sc7180-lpass.h>

#include "lpass-lpaif-reg.h"
#include "lpass.h"

static struct snd_soc_dai_driver sc7280_lpass_cpu_dai_driver[] = {
	{
		.id = MI2S_PRIMARY,
		.name = "Primary MI2S",
		.playback = {
			.stream_name = "Primary Playback",
			.formats	= SNDRV_PCM_FMTBIT_S16,
			.rates = SNDRV_PCM_RATE_48000,
			.rate_min	= 48000,
			.rate_max	= 48000,
			.channels_min	= 2,
			.channels_max	= 2,
		},
		.capture = {
			.stream_name = "Primary Capture",
			.formats = SNDRV_PCM_FMTBIT_S16 |
				SNDRV_PCM_FMTBIT_S32,
			.rates = SNDRV_PCM_RATE_48000,
			.rate_min	= 48000,
			.rate_max	= 48000,
			.channels_min	= 2,
			.channels_max	= 2,
		},
		.probe	= &asoc_qcom_lpass_cpu_dai_probe,
		.ops    = &asoc_qcom_lpass_cpu_dai_ops,
	}, {
		.id = MI2S_SECONDARY,
		.name = "Secondary MI2S",
		.playback = {
			.stream_name = "Secondary MI2S Playback",
			.formats = SNDRV_PCM_FMTBIT_S16,
			.rates = SNDRV_PCM_RATE_48000,
			.rate_min	= 48000,
			.rate_max	= 48000,
			.channels_min	= 2,
			.channels_max	= 2,
		},
		.probe	= &asoc_qcom_lpass_cpu_dai_probe,
		.ops	= &asoc_qcom_lpass_cpu_dai_ops,
	}, {
		.id = LPASS_DP_RX,
		.name = "Hdmi",
		.playback = {
			.stream_name = "DP Playback",
			.formats = SNDRV_PCM_FMTBIT_S24,
			.rates = SNDRV_PCM_RATE_48000,
			.rate_min	= 48000,
			.rate_max	= 48000,
			.channels_min	= 2,
			.channels_max	= 2,
		},
		.ops	= &asoc_qcom_lpass_hdmi_dai_ops,
	}, {
		.id = LPASS_CDC_DMA_RX0,
		.name = "CDC DMA RX",
		.playback = {
			.stream_name = "WCD Playback",
			.formats = SNDRV_PCM_FMTBIT_S16,
			.rates = SNDRV_PCM_RATE_48000,
			.rate_min	= 48000,
			.rate_max	= 48000,
			.channels_min	= 2,
			.channels_max	= 2,
		},
		.ops	= &asoc_qcom_lpass_cdc_dma_dai_ops,
	}, {
		.id = LPASS_CDC_DMA_TX3,
		.name = "CDC DMA TX",
		.capture = {
			.stream_name = "WCD Capture",
			.formats = SNDRV_PCM_FMTBIT_S16,
			.rates = SNDRV_PCM_RATE_48000,
			.rate_min	= 48000,
			.rate_max	= 48000,
			.channels_min	= 1,
			.channels_max	= 1,
		},
		.ops	= &asoc_qcom_lpass_cdc_dma_dai_ops,
	}, {
		.id = LPASS_CDC_DMA_VA_TX0,
		.name = "CDC DMA VA",
		.capture = {
			.stream_name = "DMIC Capture",
			.formats = SNDRV_PCM_FMTBIT_S16,
			.rates = SNDRV_PCM_RATE_48000,
			.rate_min	= 48000,
			.rate_max	= 48000,
			.channels_min	= 2,
			.channels_max	= 4,
		},
		.ops	= &asoc_qcom_lpass_cdc_dma_dai_ops,
	},
};

static int sc7280_lpass_alloc_dma_channel(struct lpass_data *drvdata,
					  int direction, unsigned int dai_id)
{
	struct lpass_variant *v = drvdata->variant;
	int chan = 0;

	switch (dai_id) {
	case MI2S_PRIMARY ... MI2S_QUINARY:
		if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
			chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
						   v->rdma_channels);

			if (chan >= v->rdma_channels)
				return -EBUSY;
		} else {
			chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
						  v->wrdma_channel_start +
						  v->wrdma_channels,
						  v->wrdma_channel_start);

			if (chan >= v->wrdma_channel_start + v->wrdma_channels)
				return -EBUSY;
		}
		set_bit(chan, &drvdata->dma_ch_bit_map);
		break;
	case LPASS_DP_RX:
		chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,
					   v->hdmi_rdma_channels);
		if (chan >= v->hdmi_rdma_channels)
			return -EBUSY;
		set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
		break;
	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
		chan = find_first_zero_bit(&drvdata->rxtx_dma_ch_bit_map,
					   v->rxtx_rdma_channels);
		if (chan >= v->rxtx_rdma_channels)
			return -EBUSY;
		break;
	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
		chan = find_next_zero_bit(&drvdata->rxtx_dma_ch_bit_map,
					  v->rxtx_wrdma_channel_start +
					  v->rxtx_wrdma_channels,
					  v->rxtx_wrdma_channel_start);
		if (chan >= v->rxtx_wrdma_channel_start + v->rxtx_wrdma_channels)
			return -EBUSY;
		set_bit(chan, &drvdata->rxtx_dma_ch_bit_map);
		break;
	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
		chan = find_next_zero_bit(&drvdata->va_dma_ch_bit_map,
					  v->va_wrdma_channel_start +
					  v->va_wrdma_channels,
					  v->va_wrdma_channel_start);
		if (chan >= v->va_wrdma_channel_start + v->va_wrdma_channels)
			return -EBUSY;
		set_bit(chan, &drvdata->va_dma_ch_bit_map);
		break;
	default:
		break;
	}

	return chan;
}

static int sc7280_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
{
	switch (dai_id) {
	case MI2S_PRIMARY ... MI2S_QUINARY:
		clear_bit(chan, &drvdata->dma_ch_bit_map);
		break;
	case LPASS_DP_RX:
		clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
		break;
	case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
	case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
		clear_bit(chan, &drvdata->rxtx_dma_ch_bit_map);
		break;
	case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
		clear_bit(chan, &drvdata->va_dma_ch_bit_map);
		break;
	default:
		break;
	}

	return 0;
}

static int sc7280_lpass_init(struct platform_device *pdev)
{
	struct lpass_data *drvdata = platform_get_drvdata(pdev);
	struct lpass_variant *variant = drvdata->variant;
	struct device *dev = &pdev->dev;
	int ret, i;

	drvdata->clks = devm_kcalloc(dev, variant->num_clks,
				     sizeof(*drvdata->clks), GFP_KERNEL);
	if (!drvdata->clks)
		return -ENOMEM;

	drvdata->num_clks = variant->num_clks;

	for (i = 0; i < drvdata->num_clks; i++)
		drvdata->clks[i].id = variant->clk_name[i];

	ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
	if (ret) {
		dev_err(dev, "Failed to get clocks %d\n", ret);
		return ret;
	}

	ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
	if (ret) {
		dev_err(dev, "sc7280 clk_enable failed\n");
		return ret;
	}

	return 0;
}

static int sc7280_lpass_exit(struct platform_device *pdev)
{
	struct lpass_data *drvdata = platform_get_drvdata(pdev);

	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
	return 0;
}

static int __maybe_unused sc7280_lpass_dev_resume(struct device *dev)
{
	struct lpass_data *drvdata = dev_get_drvdata(dev);

	return clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
}

static int __maybe_unused sc7280_lpass_dev_suspend(struct device *dev)
{
	struct lpass_data *drvdata = dev_get_drvdata(dev);

	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
	return 0;
}

static const struct dev_pm_ops sc7280_lpass_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(sc7280_lpass_dev_suspend, sc7280_lpass_dev_resume)
};

static struct lpass_variant sc7280_data = {
	.i2sctrl_reg_base		= 0x1000,
	.i2sctrl_reg_stride		= 0x1000,
	.i2s_ports			= 3,
	.irq_reg_base			= 0x9000,
	.irq_reg_stride			= 0x1000,
	.irq_ports			= 3,
	.rdma_reg_base			= 0xC000,
	.rdma_reg_stride		= 0x1000,
	.rdma_channels			= 5,
	.rxtx_rdma_reg_base		= 0xC000,
	.rxtx_rdma_reg_stride		= 0x1000,
	.rxtx_rdma_channels		= 8,
	.hdmi_rdma_reg_base		= 0x64000,
	.hdmi_rdma_reg_stride		= 0x1000,
	.hdmi_rdma_channels		= 4,
	.dmactl_audif_start		= 1,
	.wrdma_reg_base			= 0x18000,
	.wrdma_reg_stride		= 0x1000,
	.wrdma_channel_start		= 5,
	.wrdma_channels			= 4,
	.rxtx_irq_reg_base		= 0x9000,
	.rxtx_irq_reg_stride		= 0x1000,
	.rxtx_irq_ports			= 3,
	.rxtx_wrdma_reg_base		= 0x18000,
	.rxtx_wrdma_reg_stride		= 0x1000,
	.rxtx_wrdma_channel_start	= 5,
	.rxtx_wrdma_channels		= 6,
	.va_wrdma_reg_base		= 0x18000,
	.va_wrdma_reg_stride		= 0x1000,
	.va_wrdma_channel_start		= 5,
	.va_wrdma_channels		= 3,
	.va_irq_reg_base		= 0x9000,
	.va_irq_reg_stride		= 0x1000,
	.va_irq_ports			= 3,

	.loopback			= REG_FIELD_ID(0x1000, 17, 17, 3, 0x1000),
	.spken				= REG_FIELD_ID(0x1000, 16, 16, 3, 0x1000),
	.spkmode			= REG_FIELD_ID(0x1000, 11, 15, 3, 0x1000),
	.spkmono			= REG_FIELD_ID(0x1000, 10, 10, 3, 0x1000),
	.micen				= REG_FIELD_ID(0x1000, 9, 9, 3, 0x1000),
	.micmode			= REG_FIELD_ID(0x1000, 4, 8, 3, 0x1000),
	.micmono			= REG_FIELD_ID(0x1000, 3, 3, 3, 0x1000),
	.wssrc				= REG_FIELD_ID(0x1000, 2, 2, 3, 0x1000),
	.bitwidth			= REG_FIELD_ID(0x1000, 0, 1, 3, 0x1000),

	.rdma_dyncclk			= REG_FIELD_ID(0xC000, 21, 21, 5, 0x1000),
	.rdma_bursten			= REG_FIELD_ID(0xC000, 20, 20, 5, 0x1000),
	.rdma_wpscnt			= REG_FIELD_ID(0xC000, 16, 19, 5, 0x1000),
	.rdma_intf			= REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
	.rdma_fifowm			= REG_FIELD_ID(0xC000, 1, 5, 5, 0x1000),
	.rdma_enable			= REG_FIELD_ID(0xC000, 0, 0, 5, 0x1000),

	.wrdma_dyncclk			= REG_FIELD_ID(0x18000, 22, 22, 4, 0x1000),
	.wrdma_bursten			= REG_FIELD_ID(0x18000, 21, 21, 4, 0x1000),
	.wrdma_wpscnt			= REG_FIELD_ID(0x18000, 17, 20, 4, 0x1000),
	.wrdma_intf			= REG_FIELD_ID(0x18000, 12, 16, 4, 0x1000),
	.wrdma_fifowm			= REG_FIELD_ID(0x18000, 1, 5, 4, 0x1000),
	.wrdma_enable			= REG_FIELD_ID(0x18000, 0, 0, 4, 0x1000),

	.rxtx_rdma_enable		= REG_FIELD_ID(0xC000, 0, 0, 7, 0x1000),
	.rxtx_rdma_fifowm		= REG_FIELD_ID(0xC000, 1, 11, 7, 0x1000),
	.rxtx_rdma_intf			= REG_FIELD_ID(0xC000, 12, 15, 7, 0x1000),
	.rxtx_rdma_wpscnt		= REG_FIELD_ID(0xC000, 16, 19, 7, 0x1000),
	.rxtx_rdma_bursten		= REG_FIELD_ID(0xC000, 20, 20, 7, 0x1000),
	.rxtx_rdma_dyncclk		= REG_FIELD_ID(0xC000, 21, 21, 7, 0x1000),

	.rxtx_rdma_codec_ch		= REG_FIELD_ID(0xC050, 0, 7, 7, 0x1000),
	.rxtx_rdma_codec_intf		= REG_FIELD_ID(0xC050, 16, 19, 7, 0x1000),
	.rxtx_rdma_codec_fs_delay	= REG_FIELD_ID(0xC050, 21, 24, 7, 0x1000),
	.rxtx_rdma_codec_fs_sel		= REG_FIELD_ID(0xC050, 25, 27, 7, 0x1000),
	.rxtx_rdma_codec_pack		= REG_FIELD_ID(0xC050, 29, 29, 5, 0x1000),
	.rxtx_rdma_codec_enable		= REG_FIELD_ID(0xC050, 30, 30, 7, 0x1000),

	.rxtx_wrdma_enable		= REG_FIELD_ID(0x18000, 0, 0, 5, 0x1000),
	.rxtx_wrdma_fifowm		= REG_FIELD_ID(0x18000, 1, 11, 5, 0x1000),
	.rxtx_wrdma_intf		= REG_FIELD_ID(0x18000, 12, 16, 5, 0x1000),
	.rxtx_wrdma_wpscnt		= REG_FIELD_ID(0x18000, 17, 20, 5, 0x1000),
	.rxtx_wrdma_bursten		= REG_FIELD_ID(0x18000, 21, 21, 5, 0x1000),
	.rxtx_wrdma_dyncclk		= REG_FIELD_ID(0x18000, 22, 22, 5, 0x1000),

	.rxtx_wrdma_codec_ch		= REG_FIELD_ID(0x18050, 0, 7, 5, 0x1000),
	.rxtx_wrdma_codec_intf		= REG_FIELD_ID(0x18050, 16, 19, 5, 0x1000),
	.rxtx_wrdma_codec_fs_delay	= REG_FIELD_ID(0x18050, 21, 24, 5, 0x1000),
	.rxtx_wrdma_codec_fs_sel	= REG_FIELD_ID(0x18050, 25, 27, 5, 0x1000),
	.rxtx_wrdma_codec_pack		= REG_FIELD_ID(0x18050, 29, 29, 5, 0x1000),
	.rxtx_wrdma_codec_enable	= REG_FIELD_ID(0x18050, 30, 30, 5, 0x1000),

	.va_wrdma_enable		= REG_FIELD_ID(0x18000, 0, 0, 5, 0x1000),
	.va_wrdma_fifowm		= REG_FIELD_ID(0x18000, 1, 11, 5, 0x1000),
	.va_wrdma_intf			= REG_FIELD_ID(0x18000, 12, 16, 5, 0x1000),
	.va_wrdma_wpscnt		= REG_FIELD_ID(0x18000, 17, 20, 5, 0x1000),
	.va_wrdma_bursten		= REG_FIELD_ID(0x18000, 21, 21, 5, 0x1000),
	.va_wrdma_dyncclk		= REG_FIELD_ID(0x18000, 22, 22, 5, 0x1000),

	.va_wrdma_codec_ch		= REG_FIELD_ID(0x18050, 0, 7, 5, 0x1000),
	.va_wrdma_codec_intf		= REG_FIELD_ID(0x18050, 16, 19, 5, 0x1000),
	.va_wrdma_codec_fs_delay	= REG_FIELD_ID(0x18050, 21, 24, 5, 0x1000),
	.va_wrdma_codec_fs_sel		= REG_FIELD_ID(0x18050, 25, 27, 5, 0x1000),
	.va_wrdma_codec_pack		= REG_FIELD_ID(0x18050, 29, 29, 5, 0x1000),
	.va_wrdma_codec_enable		= REG_FIELD_ID(0x18050, 30, 30, 5, 0x1000),

	.hdmi_tx_ctl_addr		= 0x1000,
	.hdmi_legacy_addr		= 0x1008,
	.hdmi_vbit_addr			= 0x610c0,
	.hdmi_ch_lsb_addr		= 0x61048,
	.hdmi_ch_msb_addr		= 0x6104c,
	.ch_stride			= 0x8,
	.hdmi_parity_addr		= 0x61034,
	.hdmi_dmactl_addr		= 0x61038,
	.hdmi_dma_stride		= 0x4,
	.hdmi_DP_addr			= 0x610c8,
	.hdmi_sstream_addr		= 0x6101c,
	.hdmi_irq_reg_base		= 0x63000,
	.hdmi_irq_ports			= 1,

	.hdmi_rdma_dyncclk		= REG_FIELD_ID(0x64000, 14, 14, 4, 0x1000),
	.hdmi_rdma_bursten		= REG_FIELD_ID(0x64000, 13, 13, 4, 0x1000),
	.hdmi_rdma_burst8		= REG_FIELD_ID(0x64000, 15, 15, 4, 0x1000),
	.hdmi_rdma_burst16		= REG_FIELD_ID(0x64000, 16, 16, 4, 0x1000),
	.hdmi_rdma_dynburst		= REG_FIELD_ID(0x64000, 18, 18, 4, 0x1000),
	.hdmi_rdma_wpscnt		= REG_FIELD_ID(0x64000, 10, 12, 4, 0x1000),
	.hdmi_rdma_fifowm		= REG_FIELD_ID(0x64000, 1, 5, 4, 0x1000),
	.hdmi_rdma_enable		= REG_FIELD_ID(0x64000, 0, 0, 4, 0x1000),

	.sstream_en			= REG_FIELD(0x6101c, 0, 0),
	.dma_sel			= REG_FIELD(0x6101c, 1, 2),
	.auto_bbit_en			= REG_FIELD(0x6101c, 3, 3),
	.layout				= REG_FIELD(0x6101c, 4, 4),
	.layout_sp			= REG_FIELD(0x6101c, 5, 8),
	.set_sp_on_en			= REG_FIELD(0x6101c, 10, 10),
	.dp_audio			= REG_FIELD(0x6101c, 11, 11),
	.dp_staffing_en			= REG_FIELD(0x6101c, 12, 12),
	.dp_sp_b_hw_en			= REG_FIELD(0x6101c, 13, 13),

	.mute				= REG_FIELD(0x610c8, 0, 0),
	.as_sdp_cc			= REG_FIELD(0x610c8, 1, 3),
	.as_sdp_ct			= REG_FIELD(0x610c8, 4, 7),
	.aif_db4			= REG_FIELD(0x610c8, 8, 15),
	.frequency			= REG_FIELD(0x610c8, 16, 21),
	.mst_index			= REG_FIELD(0x610c8, 28, 29),
	.dptx_index			= REG_FIELD(0x610c8, 30, 31),

	.soft_reset			= REG_FIELD(0x1000, 31, 31),
	.force_reset			= REG_FIELD(0x1000, 30, 30),

	.use_hw_chs			= REG_FIELD(0x61038, 0, 0),
	.use_hw_usr			= REG_FIELD(0x61038, 1, 1),
	.hw_chs_sel			= REG_FIELD(0x61038, 2, 4),
	.hw_usr_sel			= REG_FIELD(0x61038, 5, 6),

	.replace_vbit			= REG_FIELD(0x610c0, 0, 0),
	.vbit_stream			= REG_FIELD(0x610c0, 1, 1),

	.legacy_en			=  REG_FIELD(0x1008, 0, 0),
	.calc_en			=  REG_FIELD(0x61034, 0, 0),
	.lsb_bits			=  REG_FIELD(0x61048, 0, 31),
	.msb_bits			=  REG_FIELD(0x6104c, 0, 31),

	.clk_name			= (const char*[]) {
							"core_cc_sysnoc_mport_core"
						},
	.num_clks			= 1,

	.dai_driver			= sc7280_lpass_cpu_dai_driver,
	.num_dai			= ARRAY_SIZE(sc7280_lpass_cpu_dai_driver),
	.dai_osr_clk_names		= (const char *[]) {
							"audio_cc_ext_mclk0",
							"null"
							},
	.dai_bit_clk_names		= (const char *[]) {
							"core_cc_ext_if0_ibit",
							"core_cc_ext_if1_ibit"
							},
	.init				= sc7280_lpass_init,
	.exit				= sc7280_lpass_exit,
	.alloc_dma_channel		= sc7280_lpass_alloc_dma_channel,
	.free_dma_channel		= sc7280_lpass_free_dma_channel,
};

static const struct of_device_id sc7280_lpass_cpu_device_id[] = {
	{.compatible = "qcom,sc7280-lpass-cpu", .data = &sc7280_data},
	{}
};
MODULE_DEVICE_TABLE(of, sc7280_lpass_cpu_device_id);

static struct platform_driver sc7280_lpass_cpu_platform_driver = {
	.driver = {
		.name = "sc7280-lpass-cpu",
		.of_match_table = of_match_ptr(sc7280_lpass_cpu_device_id),
		.pm = &sc7280_lpass_pm_ops,
	},
	.probe = asoc_qcom_lpass_cpu_platform_probe,
	.remove = asoc_qcom_lpass_cpu_platform_remove,
	.shutdown = asoc_qcom_lpass_cpu_platform_shutdown,
};

module_platform_driver(sc7280_lpass_cpu_platform_driver);

MODULE_DESCRIPTION("SC7280 LPASS CPU DRIVER");
MODULE_LICENSE("GPL");