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linux/sound/soc/qcom/lpass-sc7280.c
Srinivasa Rao Mandadapu b62c4e5fba
ASoC: qcom: lpass-sc7280: Add platform driver for lpass audio 
Add platform driver for configuring sc7280 lpass core I2S and
DMA configuration to support playback & capture to external codecs
connected over secondary MI2S interface and soundwire interface.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/1645716828-15305-10-git-send-email-quic_srivasam@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-24 20:21:48 +00:00

439 lines
14 KiB
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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_runtime.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 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),
},
.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");
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