sound/soc/qcom/lpass-sc7180.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2020, The Linux Foundation. All rights reserved.
   4  *
   5  * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
   6  */
   7
   8 #include <linux/clk.h>
   9 #include <linux/device.h>
  10 #include <linux/err.h>
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/of.h>
  14 #include <linux/platform_device.h>
  15 #include <dt-bindings/sound/sc7180-lpass.h>
  16 #include <sound/pcm.h>
  17 #include <sound/soc.h>
  18
  19 #include "lpass-lpaif-reg.h"
  20 #include "lpass.h"
  21
  22 static struct snd_soc_dai_driver sc7180_lpass_cpu_dai_driver[] = {
  23         {
  24                 .id = MI2S_PRIMARY,
  25                 .name = "Primary MI2S",
  26                 .playback = {
  27                         .stream_name = "Primary Playback",
  28                         .formats        = SNDRV_PCM_FMTBIT_S16,
  29                         .rates = SNDRV_PCM_RATE_48000,
  30                         .rate_min       = 48000,
  31                         .rate_max       = 48000,
  32                         .channels_min   = 2,
  33                         .channels_max   = 2,
  34                 },
  35                 .capture = {
  36                         .stream_name = "Primary Capture",
  37                         .formats = SNDRV_PCM_FMTBIT_S16 |
  38                                 SNDRV_PCM_FMTBIT_S32,
  39                         .rates = SNDRV_PCM_RATE_48000,
  40                         .rate_min       = 48000,
  41                         .rate_max       = 48000,
  42                         .channels_min   = 2,
  43                         .channels_max   = 2,
  44                 },
  45                 .probe  = &asoc_qcom_lpass_cpu_dai_probe,
  46                 .ops    = &asoc_qcom_lpass_cpu_dai_ops,
  47         }, {
  48                 .id = MI2S_SECONDARY,
  49                 .name = "Secondary MI2S",
  50                 .playback = {
  51                         .stream_name = "Secondary Playback",
  52                         .formats        = SNDRV_PCM_FMTBIT_S16,
  53                         .rates = SNDRV_PCM_RATE_48000,
  54                         .rate_min       = 48000,
  55                         .rate_max       = 48000,
  56                         .channels_min   = 2,
  57                         .channels_max   = 2,
  58                 },
  59                 .probe  = &asoc_qcom_lpass_cpu_dai_probe,
  60                 .ops    = &asoc_qcom_lpass_cpu_dai_ops,
  61                 .pcm_new = lpass_cpu_pcm_new,
  62         }, {
  63                 .id = LPASS_DP_RX,
  64                 .name = "Hdmi",
  65                 .playback = {
  66                         .stream_name = "Hdmi Playback",
  67                         .formats        = SNDRV_PCM_FMTBIT_S24,
  68                         .rates = SNDRV_PCM_RATE_48000,
  69                         .rate_min       = 48000,
  70                         .rate_max       = 48000,
  71                         .channels_min   = 2,
  72                         .channels_max   = 2,
  73                 },
  74                 .ops    = &asoc_qcom_lpass_hdmi_dai_ops,
  75         },
  76 };
  77
  78 static int sc7180_lpass_alloc_dma_channel(struct lpass_data *drvdata,
  79                                            int direction, unsigned int dai_id)
  80 {
  81         struct lpass_variant *v = drvdata->variant;
  82         int chan = 0;
  83
  84         if (dai_id == LPASS_DP_RX) {
  85                 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
  86                         chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,
  87                                                 v->hdmi_rdma_channels);
  88
  89                         if (chan >= v->hdmi_rdma_channels)
  90                                 return -EBUSY;
  91                 }
  92                 set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
  93         } else {
  94                 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
  95                         chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
  96                                                 v->rdma_channels);
  97
  98                         if (chan >= v->rdma_channels)
  99                                 return -EBUSY;
 100                 } else {
 101                         chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
 102                                         v->wrdma_channel_start +
 103                                         v->wrdma_channels,
 104                                         v->wrdma_channel_start);
 105
 106                         if (chan >=  v->wrdma_channel_start + v->wrdma_channels)
 107                                 return -EBUSY;
 108                 }
 109
 110                 set_bit(chan, &drvdata->dma_ch_bit_map);
 111         }
 112         return chan;
 113 }
 114
 115 static int sc7180_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
 116 {
 117         if (dai_id == LPASS_DP_RX)
 118                 clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
 119         else
 120                 clear_bit(chan, &drvdata->dma_ch_bit_map);
 121
 122         return 0;
 123 }
 124
 125 static int sc7180_lpass_init(struct platform_device *pdev)
 126 {
 127         struct lpass_data *drvdata = platform_get_drvdata(pdev);
 128         struct lpass_variant *variant = drvdata->variant;
 129         struct device *dev = &pdev->dev;
 130         int ret, i;
 131
 132         drvdata->clks = devm_kcalloc(dev, variant->num_clks,
 133                                      sizeof(*drvdata->clks), GFP_KERNEL);
 134         if (!drvdata->clks)
 135                 return -ENOMEM;
 136
 137         drvdata->num_clks = variant->num_clks;
 138
 139         for (i = 0; i < drvdata->num_clks; i++)
 140                 drvdata->clks[i].id = variant->clk_name[i];
 141
 142         ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
 143         if (ret) {
 144                 dev_err(dev, "Failed to get clocks %d\n", ret);
 145                 return ret;
 146         }
 147
 148         ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
 149         if (ret) {
 150                 dev_err(dev, "sc7180 clk_enable failed\n");
 151                 return ret;
 152         }
 153
 154         return 0;
 155 }
 156
 157 static int sc7180_lpass_exit(struct platform_device *pdev)
 158 {
 159         struct lpass_data *drvdata = platform_get_drvdata(pdev);
 160
 161         clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
 162
 163         return 0;
 164 }
 165
 166 static struct lpass_variant sc7180_data = {
 167         .i2sctrl_reg_base       = 0x1000,
 168         .i2sctrl_reg_stride     = 0x1000,
 169         .i2s_ports              = 3,
 170         .irq_reg_base           = 0x9000,
 171         .irq_reg_stride         = 0x1000,
 172         .irq_ports              = 3,
 173         .rdma_reg_base          = 0xC000,
 174         .rdma_reg_stride        = 0x1000,
 175         .rdma_channels          = 5,
 176         .hdmi_rdma_reg_base             = 0x64000,
 177         .hdmi_rdma_reg_stride   = 0x1000,
 178         .hdmi_rdma_channels             = 4,
 179         .dmactl_audif_start     = 1,
 180         .wrdma_reg_base         = 0x18000,
 181         .wrdma_reg_stride       = 0x1000,
 182         .wrdma_channel_start    = 5,
 183         .wrdma_channels         = 4,
 184
 185         .loopback               = REG_FIELD_ID(0x1000, 17, 17, 3, 0x1000),
 186         .spken                  = REG_FIELD_ID(0x1000, 16, 16, 3, 0x1000),
 187         .spkmode                = REG_FIELD_ID(0x1000, 11, 15, 3, 0x1000),
 188         .spkmono                = REG_FIELD_ID(0x1000, 10, 10, 3, 0x1000),
 189         .micen                  = REG_FIELD_ID(0x1000, 9, 9, 3, 0x1000),
 190         .micmode                = REG_FIELD_ID(0x1000, 4, 8, 3, 0x1000),
 191         .micmono                = REG_FIELD_ID(0x1000, 3, 3, 3, 0x1000),
 192         .wssrc                  = REG_FIELD_ID(0x1000, 2, 2, 3, 0x1000),
 193         .bitwidth               = REG_FIELD_ID(0x1000, 0, 1, 3, 0x1000),
 194
 195         .rdma_dyncclk           = REG_FIELD_ID(0xC000, 21, 21, 5, 0x1000),
 196         .rdma_bursten           = REG_FIELD_ID(0xC000, 20, 20, 5, 0x1000),
 197         .rdma_wpscnt            = REG_FIELD_ID(0xC000, 16, 19, 5, 0x1000),
 198         .rdma_intf                      = REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
 199         .rdma_fifowm            = REG_FIELD_ID(0xC000, 1, 5, 5, 0x1000),
 200         .rdma_enable            = REG_FIELD_ID(0xC000, 0, 0, 5, 0x1000),
 201
 202         .wrdma_dyncclk          = REG_FIELD_ID(0x18000, 22, 22, 4, 0x1000),
 203         .wrdma_bursten          = REG_FIELD_ID(0x18000, 21, 21, 4, 0x1000),
 204         .wrdma_wpscnt           = REG_FIELD_ID(0x18000, 17, 20, 4, 0x1000),
 205         .wrdma_intf             = REG_FIELD_ID(0x18000, 12, 16, 4, 0x1000),
 206         .wrdma_fifowm           = REG_FIELD_ID(0x18000, 1, 5, 4, 0x1000),
 207         .wrdma_enable           = REG_FIELD_ID(0x18000, 0, 0, 4, 0x1000),
 208
 209         .hdmi_tx_ctl_addr       = 0x1000,
 210         .hdmi_legacy_addr       = 0x1008,
 211         .hdmi_vbit_addr         = 0x610c0,
 212         .hdmi_ch_lsb_addr       = 0x61048,
 213         .hdmi_ch_msb_addr       = 0x6104c,
 214         .ch_stride              = 0x8,
 215         .hdmi_parity_addr       = 0x61034,
 216         .hdmi_dmactl_addr       = 0x61038,
 217         .hdmi_dma_stride        = 0x4,
 218         .hdmi_DP_addr           = 0x610c8,
 219         .hdmi_sstream_addr      = 0x6101c,
 220         .hdmi_irq_reg_base              = 0x63000,
 221         .hdmi_irq_ports         = 1,
 222
 223         .hdmi_rdma_dyncclk              = REG_FIELD_ID(0x64000, 14, 14, 4, 0x1000),
 224         .hdmi_rdma_bursten              = REG_FIELD_ID(0x64000, 13, 13, 4, 0x1000),
 225         .hdmi_rdma_burst8               = REG_FIELD_ID(0x64000, 15, 15, 4, 0x1000),
 226         .hdmi_rdma_burst16              = REG_FIELD_ID(0x64000, 16, 16, 4, 0x1000),
 227         .hdmi_rdma_dynburst             = REG_FIELD_ID(0x64000, 18, 18, 4, 0x1000),
 228         .hdmi_rdma_wpscnt               = REG_FIELD_ID(0x64000, 10, 12, 4, 0x1000),
 229         .hdmi_rdma_fifowm               = REG_FIELD_ID(0x64000, 1, 5, 4, 0x1000),
 230         .hdmi_rdma_enable               = REG_FIELD_ID(0x64000, 0, 0, 4, 0x1000),
 231
 232         .sstream_en             = REG_FIELD(0x6101c, 0, 0),
 233         .dma_sel                        = REG_FIELD(0x6101c, 1, 2),
 234         .auto_bbit_en   = REG_FIELD(0x6101c, 3, 3),
 235         .layout                 = REG_FIELD(0x6101c, 4, 4),
 236         .layout_sp              = REG_FIELD(0x6101c, 5, 8),
 237         .set_sp_on_en   = REG_FIELD(0x6101c, 10, 10),
 238         .dp_audio               = REG_FIELD(0x6101c, 11, 11),
 239         .dp_staffing_en = REG_FIELD(0x6101c, 12, 12),
 240         .dp_sp_b_hw_en  = REG_FIELD(0x6101c, 13, 13),
 241
 242         .mute                   = REG_FIELD(0x610c8, 0, 0),
 243         .as_sdp_cc              = REG_FIELD(0x610c8, 1, 3),
 244         .as_sdp_ct              = REG_FIELD(0x610c8, 4, 7),
 245         .aif_db4                        = REG_FIELD(0x610c8, 8, 15),
 246         .frequency              = REG_FIELD(0x610c8, 16, 21),
 247         .mst_index              = REG_FIELD(0x610c8, 28, 29),
 248         .dptx_index             = REG_FIELD(0x610c8, 30, 31),
 249
 250         .soft_reset             = REG_FIELD(0x1000, 31, 31),
 251         .force_reset    = REG_FIELD(0x1000, 30, 30),
 252
 253         .use_hw_chs             = REG_FIELD(0x61038, 0, 0),
 254         .use_hw_usr             = REG_FIELD(0x61038, 1, 1),
 255         .hw_chs_sel             = REG_FIELD(0x61038, 2, 4),
 256         .hw_usr_sel             = REG_FIELD(0x61038, 5, 6),
 257
 258         .replace_vbit   = REG_FIELD(0x610c0, 0, 0),
 259         .vbit_stream    = REG_FIELD(0x610c0, 1, 1),
 260
 261         .legacy_en              =  REG_FIELD(0x1008, 0, 0),
 262         .calc_en                =  REG_FIELD(0x61034, 0, 0),
 263         .lsb_bits               =  REG_FIELD(0x61048, 0, 31),
 264         .msb_bits               =  REG_FIELD(0x6104c, 0, 31),
 265
 266
 267         .clk_name               = (const char*[]) {
 268                                    "pcnoc-sway-clk",
 269                                    "audio-core",
 270                                    "pcnoc-mport-clk",
 271                                 },
 272         .num_clks               = 3,
 273         .dai_driver             = sc7180_lpass_cpu_dai_driver,
 274         .num_dai                = ARRAY_SIZE(sc7180_lpass_cpu_dai_driver),
 275         .dai_osr_clk_names      = (const char *[]) {
 276                                    "mclk0",
 277                                    "null",
 278                                 },
 279         .dai_bit_clk_names      = (const char *[]) {
 280                                    "mi2s-bit-clk0",
 281                                    "mi2s-bit-clk1",
 282                                 },
 283         .init                   = sc7180_lpass_init,
 284         .exit                   = sc7180_lpass_exit,
 285         .alloc_dma_channel      = sc7180_lpass_alloc_dma_channel,
 286         .free_dma_channel       = sc7180_lpass_free_dma_channel,
 287 };
 288
 289 static const struct of_device_id sc7180_lpass_cpu_device_id[] __maybe_unused = {
 290         {.compatible = "qcom,sc7180-lpass-cpu", .data = &sc7180_data},
 291         {}
 292 };
 293 MODULE_DEVICE_TABLE(of, sc7180_lpass_cpu_device_id);
 294
 295 static struct platform_driver sc7180_lpass_cpu_platform_driver = {
 296         .driver = {
 297                 .name = "sc7180-lpass-cpu",
 298                 .of_match_table = of_match_ptr(sc7180_lpass_cpu_device_id),
 299         },
 300         .probe = asoc_qcom_lpass_cpu_platform_probe,
 301         .remove = asoc_qcom_lpass_cpu_platform_remove,
 302         .shutdown = asoc_qcom_lpass_cpu_platform_shutdown,
 303 };
 304
 305 module_platform_driver(sc7180_lpass_cpu_platform_driver);
 306
 307 MODULE_DESCRIPTION("SC7180 LPASS CPU DRIVER");
 308 MODULE_LICENSE("GPL v2");