285 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2//3// rt715-sdca-sdw.c -- rt715 ALSA SoC audio driver4//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 22static 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 40static 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 66static 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 82static 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 92static 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 105static 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 119static 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 and126 * hw_init flag is false127 */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 135static 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 172static 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 177static 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 194static int rt715_sdca_sdw_remove(struct sdw_slave *slave)195{196 pm_runtime_disable(&slave->dev);197 198 return 0;199}200 201static 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};206MODULE_DEVICE_TABLE(sdw, rt715_sdca_id);207 208static 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 5000224 225static 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->initialization_complete,238 msecs_to_jiffies(RT715_PROBE_TIMEOUT));239 if (!time) {240 dev_err(&slave->dev, "%s: Initialization not complete, timed out\n", __func__);241 sdw_show_ping_status(slave->bus, true);242 243 return -ETIMEDOUT;244 }245 246regmap_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 265static 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 270static struct sdw_driver rt715_sdw_driver = {271 .driver = {272 .name = "rt715-sdca",273 .pm = &rt715_pm,274 },275 .probe = rt715_sdca_sdw_probe,276 .remove = rt715_sdca_sdw_remove,277 .ops = &rt715_sdca_slave_ops,278 .id_table = rt715_sdca_id,279};280module_sdw_driver(rt715_sdw_driver);281 282MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA");283MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");284MODULE_LICENSE("GPL v2");285