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_MAPLE, 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_MAPLE, 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 /* 125 * Perform initialization only if slave status is present and 126 * hw_init flag is false 127 */ 128 if (rt715->hw_init || status != SDW_SLAVE_ATTACHED) 129 return 0; 130 131 /* perform I/O transfers required for Slave initialization */ 132 return rt715_sdca_io_init(&slave->dev, slave); 133 } 134 135 static int rt715_sdca_read_prop(struct sdw_slave *slave) 136 { 137 struct sdw_slave_prop *prop = &slave->prop; 138 int nval, i; 139 u32 bit; 140 unsigned long addr; 141 struct sdw_dpn_prop *dpn; 142 143 prop->paging_support = true; 144 145 /* first we need to allocate memory for set bits in port lists */ 146 prop->source_ports = 0x50;/* BITMAP: 01010000 */ 147 prop->sink_ports = 0x0; /* BITMAP: 00000000 */ 148 149 nval = hweight32(prop->source_ports); 150 prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, 151 sizeof(*prop->src_dpn_prop), 152 GFP_KERNEL); 153 if (!prop->src_dpn_prop) 154 return -ENOMEM; 155 156 dpn = prop->src_dpn_prop; 157 i = 0; 158 addr = prop->source_ports; 159 for_each_set_bit(bit, &addr, 32) { 160 dpn[i].num = bit; 161 dpn[i].simple_ch_prep_sm = true; 162 dpn[i].ch_prep_timeout = 10; 163 i++; 164 } 165 166 /* set the timeout values */ 167 prop->clk_stop_timeout = 200; 168 169 return 0; 170 } 171 172 static const struct sdw_slave_ops rt715_sdca_slave_ops = { 173 .read_prop = rt715_sdca_read_prop, 174 .update_status = rt715_sdca_update_status, 175 }; 176 177 static int rt715_sdca_sdw_probe(struct sdw_slave *slave, 178 const struct sdw_device_id *id) 179 { 180 struct regmap *mbq_regmap, *regmap; 181 182 /* Regmap Initialization */ 183 mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap); 184 if (IS_ERR(mbq_regmap)) 185 return PTR_ERR(mbq_regmap); 186 187 regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap); 188 if (IS_ERR(regmap)) 189 return PTR_ERR(regmap); 190 191 return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave); 192 } 193 194 static int rt715_sdca_sdw_remove(struct sdw_slave *slave) 195 { 196 pm_runtime_disable(&slave->dev); 197 198 return 0; 199 } 200 201 static const struct sdw_device_id rt715_sdca_id[] = { 202 SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x3, 0x1, 0), 203 SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x3, 0x1, 0), 204 {}, 205 }; 206 MODULE_DEVICE_TABLE(sdw, rt715_sdca_id); 207 208 static int __maybe_unused rt715_dev_suspend(struct device *dev) 209 { 210 struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev); 211 212 if (!rt715->hw_init) 213 return 0; 214 215 regcache_cache_only(rt715->regmap, true); 216 regcache_mark_dirty(rt715->regmap); 217 regcache_cache_only(rt715->mbq_regmap, true); 218 regcache_mark_dirty(rt715->mbq_regmap); 219 220 return 0; 221 } 222 223 #define RT715_PROBE_TIMEOUT 5000 224 225 static int __maybe_unused rt715_dev_resume(struct device *dev) 226 { 227 struct sdw_slave *slave = dev_to_sdw_dev(dev); 228 struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev); 229 unsigned long time; 230 231 if (!rt715->first_hw_init) 232 return 0; 233 234 if (!slave->unattach_request) 235 goto regmap_sync; 236 237 time = wait_for_completion_timeout(&slave->enumeration_complete, 238 msecs_to_jiffies(RT715_PROBE_TIMEOUT)); 239 if (!time) { 240 dev_err(&slave->dev, "Enumeration not complete, timed out\n"); 241 sdw_show_ping_status(slave->bus, true); 242 243 return -ETIMEDOUT; 244 } 245 246 regmap_sync: 247 slave->unattach_request = 0; 248 regcache_cache_only(rt715->regmap, false); 249 regcache_sync_region(rt715->regmap, 250 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL, 251 CH_00), 252 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN, 253 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00)); 254 regcache_cache_only(rt715->mbq_regmap, false); 255 regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff); 256 regcache_sync_region(rt715->mbq_regmap, 257 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL, 258 CH_00), 259 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN, 260 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00)); 261 262 return 0; 263 } 264 265 static const struct dev_pm_ops rt715_pm = { 266 SET_SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume) 267 SET_RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL) 268 }; 269 270 static struct sdw_driver rt715_sdw_driver = { 271 .driver = { 272 .name = "rt715-sdca", 273 .owner = THIS_MODULE, 274 .pm = &rt715_pm, 275 }, 276 .probe = rt715_sdca_sdw_probe, 277 .remove = rt715_sdca_sdw_remove, 278 .ops = &rt715_sdca_slave_ops, 279 .id_table = rt715_sdca_id, 280 }; 281 module_sdw_driver(rt715_sdw_driver); 282 283 MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA"); 284 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>"); 285 MODULE_LICENSE("GPL v2"); 286