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 0x6100000: 74 return true; 75 default: 76 return false; 77 } 78 } 79 80 static bool rt715_sdca_mbq_volatile_register(struct device *dev, unsigned int reg) 81 { 82 switch (reg) { 83 case 0x2000000: 84 return true; 85 default: 86 return false; 87 } 88 } 89 90 static const struct regmap_config rt715_sdca_regmap = { 91 .reg_bits = 32, 92 .val_bits = 8, 93 .readable_reg = rt715_sdca_readable_register, 94 .volatile_reg = rt715_sdca_volatile_register, 95 .max_register = 0x43ffffff, 96 .reg_defaults = rt715_reg_defaults_sdca, 97 .num_reg_defaults = ARRAY_SIZE(rt715_reg_defaults_sdca), 98 .cache_type = REGCACHE_RBTREE, 99 .use_single_read = true, 100 .use_single_write = true, 101 }; 102 103 static const struct regmap_config rt715_sdca_mbq_regmap = { 104 .name = "sdw-mbq", 105 .reg_bits = 32, 106 .val_bits = 16, 107 .readable_reg = rt715_sdca_mbq_readable_register, 108 .volatile_reg = rt715_sdca_mbq_volatile_register, 109 .max_register = 0x43ffffff, 110 .reg_defaults = rt715_mbq_reg_defaults_sdca, 111 .num_reg_defaults = ARRAY_SIZE(rt715_mbq_reg_defaults_sdca), 112 .cache_type = REGCACHE_RBTREE, 113 .use_single_read = true, 114 .use_single_write = true, 115 }; 116 117 static int rt715_sdca_update_status(struct sdw_slave *slave, 118 enum sdw_slave_status status) 119 { 120 struct rt715_sdca_priv *rt715 = dev_get_drvdata(&slave->dev); 121 122 /* Update the status */ 123 rt715->status = status; 124 125 /* 126 * Perform initialization only if slave status is present and 127 * hw_init flag is false 128 */ 129 if (rt715->hw_init || rt715->status != SDW_SLAVE_ATTACHED) 130 return 0; 131 132 /* perform I/O transfers required for Slave initialization */ 133 return rt715_sdca_io_init(&slave->dev, slave); 134 } 135 136 static int rt715_sdca_read_prop(struct sdw_slave *slave) 137 { 138 struct sdw_slave_prop *prop = &slave->prop; 139 int nval, i; 140 u32 bit; 141 unsigned long addr; 142 struct sdw_dpn_prop *dpn; 143 144 prop->paging_support = true; 145 146 /* first we need to allocate memory for set bits in port lists */ 147 prop->source_ports = 0x50;/* BITMAP: 01010000 */ 148 prop->sink_ports = 0x0; /* BITMAP: 00000000 */ 149 150 nval = hweight32(prop->source_ports); 151 prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, 152 sizeof(*prop->src_dpn_prop), 153 GFP_KERNEL); 154 if (!prop->src_dpn_prop) 155 return -ENOMEM; 156 157 dpn = prop->src_dpn_prop; 158 i = 0; 159 addr = prop->source_ports; 160 for_each_set_bit(bit, &addr, 32) { 161 dpn[i].num = bit; 162 dpn[i].simple_ch_prep_sm = true; 163 dpn[i].ch_prep_timeout = 10; 164 i++; 165 } 166 167 /* set the timeout values */ 168 prop->clk_stop_timeout = 20; 169 170 return 0; 171 } 172 173 static struct sdw_slave_ops rt715_sdca_slave_ops = { 174 .read_prop = rt715_sdca_read_prop, 175 .update_status = rt715_sdca_update_status, 176 }; 177 178 static int rt715_sdca_sdw_probe(struct sdw_slave *slave, 179 const struct sdw_device_id *id) 180 { 181 struct regmap *mbq_regmap, *regmap; 182 183 slave->ops = &rt715_sdca_slave_ops; 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 const struct sdw_device_id rt715_sdca_id[] = { 198 SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x3, 0x1, 0), 199 SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x3, 0x1, 0), 200 {}, 201 }; 202 MODULE_DEVICE_TABLE(sdw, rt715_sdca_id); 203 204 static int __maybe_unused rt715_dev_suspend(struct device *dev) 205 { 206 struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev); 207 208 if (!rt715->hw_init) 209 return 0; 210 211 regcache_cache_only(rt715->regmap, true); 212 regcache_mark_dirty(rt715->regmap); 213 regcache_cache_only(rt715->mbq_regmap, true); 214 regcache_mark_dirty(rt715->mbq_regmap); 215 216 return 0; 217 } 218 219 #define RT715_PROBE_TIMEOUT 5000 220 221 static int __maybe_unused rt715_dev_resume(struct device *dev) 222 { 223 struct sdw_slave *slave = dev_to_sdw_dev(dev); 224 struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev); 225 unsigned long time; 226 227 if (!rt715->hw_init) 228 return 0; 229 230 if (!slave->unattach_request) 231 goto regmap_sync; 232 233 time = wait_for_completion_timeout(&slave->enumeration_complete, 234 msecs_to_jiffies(RT715_PROBE_TIMEOUT)); 235 if (!time) { 236 dev_err(&slave->dev, "Enumeration not complete, timed out\n"); 237 return -ETIMEDOUT; 238 } 239 240 regmap_sync: 241 slave->unattach_request = 0; 242 regcache_cache_only(rt715->regmap, false); 243 regcache_sync_region(rt715->regmap, 244 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL, 245 CH_00), 246 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN, 247 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00)); 248 regcache_cache_only(rt715->mbq_regmap, false); 249 regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff); 250 regcache_sync_region(rt715->mbq_regmap, 251 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL, 252 CH_00), 253 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN, 254 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00)); 255 256 return 0; 257 } 258 259 static const struct dev_pm_ops rt715_pm = { 260 SET_SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume) 261 SET_RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL) 262 }; 263 264 static struct sdw_driver rt715_sdw_driver = { 265 .driver = { 266 .name = "rt715-sdca", 267 .owner = THIS_MODULE, 268 .pm = &rt715_pm, 269 }, 270 .probe = rt715_sdca_sdw_probe, 271 .ops = &rt715_sdca_slave_ops, 272 .id_table = rt715_sdca_id, 273 }; 274 module_sdw_driver(rt715_sdw_driver); 275 276 MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA"); 277 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>"); 278 MODULE_LICENSE("GPL v2"); 279