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