| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2020, The Linux Foundation. All rights reserved. |
| * |
| * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/device.h> |
| #include <linux/err.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| #include <dt-bindings/sound/sc7180-lpass.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| |
| #include "lpass-lpaif-reg.h" |
| #include "lpass.h" |
| |
| static struct snd_soc_dai_driver sc7180_lpass_cpu_dai_driver[] = { |
| [MI2S_PRIMARY] = { |
| .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, |
| .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, |
| }, |
| |
| [MI2S_SECONDARY] = { |
| .id = MI2S_SECONDARY, |
| .name = "Secondary MI2S", |
| .playback = { |
| .stream_name = "Secondary 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, |
| }, |
| [LPASS_DP_RX] = { |
| .id = LPASS_DP_RX, |
| .name = "Hdmi", |
| .playback = { |
| .stream_name = "Hdmi 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, |
| }, |
| }; |
| |
| static int sc7180_lpass_alloc_dma_channel(struct lpass_data *drvdata, |
| int direction, unsigned int dai_id) |
| { |
| struct lpass_variant *v = drvdata->variant; |
| int chan = 0; |
| |
| if (dai_id == LPASS_DP_RX) { |
| if (direction == SNDRV_PCM_STREAM_PLAYBACK) { |
| 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); |
| } else { |
| 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); |
| } |
| return chan; |
| } |
| |
| static int sc7180_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id) |
| { |
| if (dai_id == LPASS_DP_RX) |
| clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map); |
| else |
| clear_bit(chan, &drvdata->dma_ch_bit_map); |
| |
| return 0; |
| } |
| |
| static int sc7180_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); |
| 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, "sc7180 clk_enable failed\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int sc7180_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 sc7180_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, |
| .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, |
| |
| .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, 0, 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), |
| |
| .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*[]) { |
| "pcnoc-sway-clk", |
| "audio-core", |
| "pcnoc-mport-clk", |
| }, |
| .num_clks = 3, |
| .dai_driver = sc7180_lpass_cpu_dai_driver, |
| .num_dai = ARRAY_SIZE(sc7180_lpass_cpu_dai_driver), |
| .dai_osr_clk_names = (const char *[]) { |
| "mclk0", |
| "null", |
| }, |
| .dai_bit_clk_names = (const char *[]) { |
| "mi2s-bit-clk0", |
| "mi2s-bit-clk1", |
| }, |
| .init = sc7180_lpass_init, |
| .exit = sc7180_lpass_exit, |
| .alloc_dma_channel = sc7180_lpass_alloc_dma_channel, |
| .free_dma_channel = sc7180_lpass_free_dma_channel, |
| }; |
| |
| static const struct of_device_id sc7180_lpass_cpu_device_id[] = { |
| {.compatible = "qcom,sc7180-lpass-cpu", .data = &sc7180_data}, |
| {} |
| }; |
| MODULE_DEVICE_TABLE(of, sc7180_lpass_cpu_device_id); |
| |
| static struct platform_driver sc7180_lpass_cpu_platform_driver = { |
| .driver = { |
| .name = "sc7180-lpass-cpu", |
| .of_match_table = of_match_ptr(sc7180_lpass_cpu_device_id), |
| }, |
| .probe = asoc_qcom_lpass_cpu_platform_probe, |
| .remove = asoc_qcom_lpass_cpu_platform_remove, |
| }; |
| |
| module_platform_driver(sc7180_lpass_cpu_platform_driver); |
| |
| MODULE_DESCRIPTION("SC7180 LPASS CPU DRIVER"); |
| MODULE_LICENSE("GPL v2"); |
