sound/soc/codecs/rt715-sdca-sdw.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // rt715-sdca-sdw.c -- rt715 ALSA SoC audio driver
   4 //
   5 // Copyright(c) 2020 Realtek Semiconductor Corp.
   6 //
   7 //
   8
   9 #include <linux/delay.h>
  10 #include <linux/device.h>
  11 #include <linux/mod_devicetable.h>
  12 #include <linux/soundwire/sdw.h>
  13 #include <linux/soundwire/sdw_type.h>
  14 #include <linux/soundwire/sdw_registers.h>
  15 #include <linux/module.h>
  16 #include <linux/pm_runtime.h>
  17 #include <linux/regmap.h>
  18 #include <sound/soc.h>
  19 #include "rt715-sdca.h"
  20 #include "rt715-sdca-sdw.h"
  21
  22 static bool rt715_sdca_readable_register(struct device *dev, unsigned int reg)
  23 {
  24         switch (reg) {
  25         case 0x201a ... 0x2027:
  26         case 0x2029 ... 0x202a:
  27         case 0x202d ... 0x2034:
  28         case 0x2200 ... 0x2204:
  29         case 0x2206 ... 0x2212:
  30         case 0x2230 ... 0x2239:
  31         case 0x2f5b:
  32         case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
  33                 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00):
  34                 return true;
  35         default:
  36                 return false;
  37         }
  38 }
  39
  40 static bool rt715_sdca_volatile_register(struct device *dev, unsigned int reg)
  41 {
  42         switch (reg) {
  43         case 0x201b:
  44         case 0x201c:
  45         case 0x201d:
  46         case 0x201f:
  47         case 0x2021:
  48         case 0x2023:
  49         case 0x2230:
  50         case 0x202d ... 0x202f: /* BRA */
  51         case 0x2200 ... 0x2212: /* i2c debug */
  52         case 0x2f07:
  53         case 0x2f1b ... 0x2f1e:
  54         case 0x2f30 ... 0x2f34:
  55         case 0x2f50 ... 0x2f51:
  56         case 0x2f53 ... 0x2f59:
  57         case 0x2f5c ... 0x2f5f:
  58         case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
  59                 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00): /* VAD Searching status */
  60                 return true;
  61         default:
  62                 return false;
  63         }
  64 }
  65
  66 static bool rt715_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
  67 {
  68         switch (reg) {
  69         case 0x2000000:
  70         case 0x200002b:
  71         case 0x2000036:
  72         case 0x2000037:
  73         case 0x2000039:
  74         case 0x2000044:
  75         case 0x6100000:
  76                 return true;
  77         default:
  78                 return false;
  79         }
  80 }
  81
  82 static bool rt715_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
  83 {
  84         switch (reg) {
  85         case 0x2000000:
  86                 return true;
  87         default:
  88                 return false;
  89         }
  90 }
  91
  92 static const struct regmap_config rt715_sdca_regmap = {
  93         .reg_bits = 32,
  94         .val_bits = 8,
  95         .readable_reg = rt715_sdca_readable_register,
  96         .volatile_reg = rt715_sdca_volatile_register,
  97         .max_register = 0x43ffffff,
  98         .reg_defaults = rt715_reg_defaults_sdca,
  99         .num_reg_defaults = ARRAY_SIZE(rt715_reg_defaults_sdca),
 100         .cache_type = REGCACHE_RBTREE,
 101         .use_single_read = true,
 102         .use_single_write = true,
 103 };
 104
 105 static const struct regmap_config rt715_sdca_mbq_regmap = {
 106         .name = "sdw-mbq",
 107         .reg_bits = 32,
 108         .val_bits = 16,
 109         .readable_reg = rt715_sdca_mbq_readable_register,
 110         .volatile_reg = rt715_sdca_mbq_volatile_register,
 111         .max_register = 0x43ffffff,
 112         .reg_defaults = rt715_mbq_reg_defaults_sdca,
 113         .num_reg_defaults = ARRAY_SIZE(rt715_mbq_reg_defaults_sdca),
 114         .cache_type = REGCACHE_RBTREE,
 115         .use_single_read = true,
 116         .use_single_write = true,
 117 };
 118
 119 static int rt715_sdca_update_status(struct sdw_slave *slave,
 120                                 enum sdw_slave_status status)
 121 {
 122         struct rt715_sdca_priv *rt715 = dev_get_drvdata(&slave->dev);
 123
 124         /* Update the status */
 125         rt715->status = status;
 126
 127         /*
 128          * Perform initialization only if slave status is present and
 129          * hw_init flag is false
 130          */
 131         if (rt715->hw_init || rt715->status != SDW_SLAVE_ATTACHED)
 132                 return 0;
 133
 134         /* perform I/O transfers required for Slave initialization */
 135         return rt715_sdca_io_init(&slave->dev, slave);
 136 }
 137
 138 static int rt715_sdca_read_prop(struct sdw_slave *slave)
 139 {
 140         struct sdw_slave_prop *prop = &slave->prop;
 141         int nval, i;
 142         u32 bit;
 143         unsigned long addr;
 144         struct sdw_dpn_prop *dpn;
 145
 146         prop->paging_support = true;
 147
 148         /* first we need to allocate memory for set bits in port lists */
 149         prop->source_ports = 0x50;/* BITMAP: 01010000 */
 150         prop->sink_ports = 0x0; /* BITMAP:  00000000 */
 151
 152         nval = hweight32(prop->source_ports);
 153         prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
 154                                         sizeof(*prop->src_dpn_prop),
 155                                         GFP_KERNEL);
 156         if (!prop->src_dpn_prop)
 157                 return -ENOMEM;
 158
 159         dpn = prop->src_dpn_prop;
 160         i = 0;
 161         addr = prop->source_ports;
 162         for_each_set_bit(bit, &addr, 32) {
 163                 dpn[i].num = bit;
 164                 dpn[i].simple_ch_prep_sm = true;
 165                 dpn[i].ch_prep_timeout = 10;
 166                 i++;
 167         }
 168
 169         /* set the timeout values */
 170         prop->clk_stop_timeout = 20;
 171
 172         return 0;
 173 }
 174
 175 static struct sdw_slave_ops rt715_sdca_slave_ops = {
 176         .read_prop = rt715_sdca_read_prop,
 177         .update_status = rt715_sdca_update_status,
 178 };
 179
 180 static int rt715_sdca_sdw_probe(struct sdw_slave *slave,
 181                            const struct sdw_device_id *id)
 182 {
 183         struct regmap *mbq_regmap, *regmap;
 184
 185         /* Regmap Initialization */
 186         mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap);
 187         if (IS_ERR(mbq_regmap))
 188                 return PTR_ERR(mbq_regmap);
 189
 190         regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap);
 191         if (IS_ERR(regmap))
 192                 return PTR_ERR(regmap);
 193
 194         return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave);
 195 }
 196
 197 static int rt715_sdca_sdw_remove(struct sdw_slave *slave)
 198 {
 199         struct rt715_sdca_priv *rt715 = dev_get_drvdata(&slave->dev);
 200
 201         if (rt715->first_hw_init)
 202                 pm_runtime_disable(&slave->dev);
 203
 204         return 0;
 205 }
 206
 207 static const struct sdw_device_id rt715_sdca_id[] = {
 208         SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x3, 0x1, 0),
 209         SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x3, 0x1, 0),
 210         {},
 211 };
 212 MODULE_DEVICE_TABLE(sdw, rt715_sdca_id);
 213
 214 static int __maybe_unused rt715_dev_suspend(struct device *dev)
 215 {
 216         struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev);
 217
 218         if (!rt715->hw_init)
 219                 return 0;
 220
 221         regcache_cache_only(rt715->regmap, true);
 222         regcache_mark_dirty(rt715->regmap);
 223         regcache_cache_only(rt715->mbq_regmap, true);
 224         regcache_mark_dirty(rt715->mbq_regmap);
 225
 226         return 0;
 227 }
 228
 229 #define RT715_PROBE_TIMEOUT 5000
 230
 231 static int __maybe_unused rt715_dev_resume(struct device *dev)
 232 {
 233         struct sdw_slave *slave = dev_to_sdw_dev(dev);
 234         struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev);
 235         unsigned long time;
 236
 237         if (!rt715->first_hw_init)
 238                 return 0;
 239
 240         if (!slave->unattach_request)
 241                 goto regmap_sync;
 242
 243         time = wait_for_completion_timeout(&slave->enumeration_complete,
 244                                            msecs_to_jiffies(RT715_PROBE_TIMEOUT));
 245         if (!time) {
 246                 dev_err(&slave->dev, "Enumeration not complete, timed out\n");
 247                 return -ETIMEDOUT;
 248         }
 249
 250 regmap_sync:
 251         slave->unattach_request = 0;
 252         regcache_cache_only(rt715->regmap, false);
 253         regcache_sync_region(rt715->regmap,
 254                 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
 255                         CH_00),
 256                 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
 257                         RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
 258         regcache_cache_only(rt715->mbq_regmap, false);
 259         regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff);
 260         regcache_sync_region(rt715->mbq_regmap,
 261                 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
 262                         CH_00),
 263                 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
 264                         RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
 265
 266         return 0;
 267 }
 268
 269 static const struct dev_pm_ops rt715_pm = {
 270         SET_SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume)
 271         SET_RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL)
 272 };
 273
 274 static struct sdw_driver rt715_sdw_driver = {
 275         .driver = {
 276                 .name = "rt715-sdca",
 277                 .owner = THIS_MODULE,
 278                 .pm = &rt715_pm,
 279         },
 280         .probe = rt715_sdca_sdw_probe,
 281         .remove = rt715_sdca_sdw_remove,
 282         .ops = &rt715_sdca_slave_ops,
 283         .id_table = rt715_sdca_id,
 284 };
 285 module_sdw_driver(rt715_sdw_driver);
 286
 287 MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA");
 288 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
 289 MODULE_LICENSE("GPL v2");