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
rt715_sdca_readable_register(struct device * dev,unsigned int reg)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
rt715_sdca_volatile_register(struct device * dev,unsigned int reg)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
rt715_sdca_mbq_readable_register(struct device * dev,unsigned int reg)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
rt715_sdca_mbq_volatile_register(struct device * dev,unsigned int reg)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
rt715_sdca_update_status(struct sdw_slave * slave,enum sdw_slave_status status)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
rt715_sdca_read_prop(struct sdw_slave * slave)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
rt715_sdca_sdw_probe(struct sdw_slave * slave,const struct sdw_device_id * id)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
rt715_sdca_sdw_remove(struct sdw_slave * slave)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
rt715_dev_suspend(struct device * dev)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
rt715_dev_resume(struct device * dev)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