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->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
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 .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 };
280 module_sdw_driver(rt715_sdw_driver);
281
282 MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA");
283 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
284 MODULE_LICENSE("GPL v2");
285
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