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/soundwire/sdw.h> 12 #include <linux/soundwire/sdw_type.h> 13 #include <linux/soundwire/sdw_registers.h> 14 #include <linux/module.h> 15 #include <linux/pm_runtime.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_MAPLE, 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_MAPLE, 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 /* 124 * Perform initialization only if slave status is present and 125 * hw_init flag is false 126 */ 127 if (rt715->hw_init || status != SDW_SLAVE_ATTACHED) 128 return 0; 129 130 /* perform I/O transfers required for Slave initialization */ 131 return rt715_sdca_io_init(&slave->dev, slave); 132 } 133 134 static int rt715_sdca_read_prop(struct sdw_slave *slave) 135 { 136 struct sdw_slave_prop *prop = &slave->prop; 137 int nval, i; 138 u32 bit; 139 unsigned long addr; 140 struct sdw_dpn_prop *dpn; 141 142 prop->paging_support = true; 143 144 /* first we need to allocate memory for set bits in port lists */ 145 prop->source_ports = 0x50;/* BITMAP: 01010000 */ 146 prop->sink_ports = 0x0; /* BITMAP: 00000000 */ 147 148 nval = hweight32(prop->source_ports); 149 prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, 150 sizeof(*prop->src_dpn_prop), 151 GFP_KERNEL); 152 if (!prop->src_dpn_prop) 153 return -ENOMEM; 154 155 dpn = prop->src_dpn_prop; 156 i = 0; 157 addr = prop->source_ports; 158 for_each_set_bit(bit, &addr, 32) { 159 dpn[i].num = bit; 160 dpn[i].simple_ch_prep_sm = true; 161 dpn[i].ch_prep_timeout = 10; 162 i++; 163 } 164 165 /* set the timeout values */ 166 prop->clk_stop_timeout = 200; 167 168 return 0; 169 } 170 171 static const struct sdw_slave_ops rt715_sdca_slave_ops = { 172 .read_prop = rt715_sdca_read_prop, 173 .update_status = rt715_sdca_update_status, 174 }; 175 176 static int rt715_sdca_sdw_probe(struct sdw_slave *slave, 177 const struct sdw_device_id *id) 178 { 179 struct regmap *mbq_regmap, *regmap; 180 181 /* Regmap Initialization */ 182 mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap); 183 if (IS_ERR(mbq_regmap)) 184 return PTR_ERR(mbq_regmap); 185 186 regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap); 187 if (IS_ERR(regmap)) 188 return PTR_ERR(regmap); 189 190 return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave); 191 } 192 193 static void rt715_sdca_sdw_remove(struct sdw_slave *slave) 194 { 195 pm_runtime_disable(&slave->dev); 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 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 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 int ret; 227 228 if (!rt715->first_hw_init) 229 return 0; 230 231 ret = sdw_slave_wait_for_init(slave, RT715_PROBE_TIMEOUT); 232 if (ret) { 233 sdw_show_ping_status(slave->bus, true); 234 return ret; 235 } 236 237 regcache_cache_only(rt715->regmap, false); 238 regcache_sync_region(rt715->regmap, 239 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL, 240 CH_00), 241 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN, 242 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00)); 243 regcache_cache_only(rt715->mbq_regmap, false); 244 regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff); 245 regcache_sync_region(rt715->mbq_regmap, 246 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL, 247 CH_00), 248 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN, 249 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00)); 250 251 return 0; 252 } 253 254 static const struct dev_pm_ops rt715_pm = { 255 SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume) 256 RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL) 257 }; 258 259 static struct sdw_driver rt715_sdw_driver = { 260 .driver = { 261 .name = "rt715-sdca", 262 .pm = pm_ptr(&rt715_pm), 263 }, 264 .probe = rt715_sdca_sdw_probe, 265 .remove = rt715_sdca_sdw_remove, 266 .ops = &rt715_sdca_slave_ops, 267 .id_table = rt715_sdca_id, 268 }; 269 module_sdw_driver(rt715_sdw_driver); 270 271 MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA"); 272 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>"); 273 MODULE_LICENSE("GPL v2"); 274