tjh.dev
Linux kernel mirror (for testing)
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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
21static 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
39static 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
65static 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
81static 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
91static 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_RBTREE,
100 .use_single_read = true,
101 .use_single_write = true,
102};
103
104static 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_RBTREE,
114 .use_single_read = true,
115 .use_single_write = true,
116};
117
118static 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 /* Update the status */
124 rt715->status = status;
125
126 /*
127 * Perform initialization only if slave status is present and
128 * hw_init flag is false
129 */
130 if (rt715->hw_init || rt715->status != SDW_SLAVE_ATTACHED)
131 return 0;
132
133 /* perform I/O transfers required for Slave initialization */
134 return rt715_sdca_io_init(&slave->dev, slave);
135}
136
137static int rt715_sdca_read_prop(struct sdw_slave *slave)
138{
139 struct sdw_slave_prop *prop = &slave->prop;
140 int nval, i;
141 u32 bit;
142 unsigned long addr;
143 struct sdw_dpn_prop *dpn;
144
145 prop->paging_support = true;
146
147 /* first we need to allocate memory for set bits in port lists */
148 prop->source_ports = 0x50;/* BITMAP: 01010000 */
149 prop->sink_ports = 0x0; /* BITMAP: 00000000 */
150
151 nval = hweight32(prop->source_ports);
152 prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
153 sizeof(*prop->src_dpn_prop),
154 GFP_KERNEL);
155 if (!prop->src_dpn_prop)
156 return -ENOMEM;
157
158 dpn = prop->src_dpn_prop;
159 i = 0;
160 addr = prop->source_ports;
161 for_each_set_bit(bit, &addr, 32) {
162 dpn[i].num = bit;
163 dpn[i].simple_ch_prep_sm = true;
164 dpn[i].ch_prep_timeout = 10;
165 i++;
166 }
167
168 /* set the timeout values */
169 prop->clk_stop_timeout = 20;
170
171 return 0;
172}
173
174static struct sdw_slave_ops rt715_sdca_slave_ops = {
175 .read_prop = rt715_sdca_read_prop,
176 .update_status = rt715_sdca_update_status,
177};
178
179static int rt715_sdca_sdw_probe(struct sdw_slave *slave,
180 const struct sdw_device_id *id)
181{
182 struct regmap *mbq_regmap, *regmap;
183
184 slave->ops = &rt715_sdca_slave_ops;
185
186 /* Regmap Initialization */
187 mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap);
188 if (IS_ERR(mbq_regmap))
189 return PTR_ERR(mbq_regmap);
190
191 regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap);
192 if (IS_ERR(regmap))
193 return PTR_ERR(regmap);
194
195 return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave);
196}
197
198static 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};
203MODULE_DEVICE_TABLE(sdw, rt715_sdca_id);
204
205static int __maybe_unused 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
222static int __maybe_unused 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 unsigned long time;
227
228 if (!rt715->first_hw_init)
229 return 0;
230
231 if (!slave->unattach_request)
232 goto regmap_sync;
233
234 time = wait_for_completion_timeout(&slave->enumeration_complete,
235 msecs_to_jiffies(RT715_PROBE_TIMEOUT));
236 if (!time) {
237 dev_err(&slave->dev, "Enumeration not complete, timed out\n");
238 return -ETIMEDOUT;
239 }
240
241regmap_sync:
242 slave->unattach_request = 0;
243 regcache_cache_only(rt715->regmap, false);
244 regcache_sync_region(rt715->regmap,
245 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
246 CH_00),
247 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
248 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
249 regcache_cache_only(rt715->mbq_regmap, false);
250 regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff);
251 regcache_sync_region(rt715->mbq_regmap,
252 SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
253 CH_00),
254 SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
255 RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
256
257 return 0;
258}
259
260static const struct dev_pm_ops rt715_pm = {
261 SET_SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume)
262 SET_RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL)
263};
264
265static struct sdw_driver rt715_sdw_driver = {
266 .driver = {
267 .name = "rt715-sdca",
268 .owner = THIS_MODULE,
269 .pm = &rt715_pm,
270 },
271 .probe = rt715_sdca_sdw_probe,
272 .ops = &rt715_sdca_slave_ops,
273 .id_table = rt715_sdca_id,
274};
275module_sdw_driver(rt715_sdw_driver);
276
277MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA");
278MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
279MODULE_LICENSE("GPL v2");