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 --- sound/soc/qcom/lpass-sc7280.c | 445 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 445 insertions(+) create mode 100644 sound/soc/qcom/lpass-sc7280.c
diff --git a/sound/soc/qcom/lpass-sc7280.c b/sound/soc/qcom/lpass-sc7280.c new file mode 100644 index 0000000..4af41af --- /dev/null +++ b/sound/soc/qcom/lpass-sc7280.c @@ -0,0 +1,445 @@ +// 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 = 2, + }, + .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, + .cdc_dma_clk_names = (const char*[]) { + "audio_cc_codec_mem0", + "audio_cc_codec_mem1", + "audio_cc_codec_mem2", + "aon_cc_va_mem0" + }, + .cdc_dma_num_clks = 4, + .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");