Merge tag 'asoc-fix-v4.14-rc6' into asoc-linus
[sfrench/cifs-2.6.git] / sound / soc / intel / skylake / skl-nhlt.c
1 /*
2  *  skl-nhlt.c - Intel SKL Platform NHLT parsing
3  *
4  *  Copyright (C) 2015 Intel Corp
5  *  Author: Sanjiv Kumar <sanjiv.kumar@intel.com>
6  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; version 2 of the License.
11  *
12  *  This program is distributed in the hope that it will be useful, but
13  *  WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  *  General Public License for more details.
16  *
17  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
18  *
19  */
20 #include <linux/pci.h>
21 #include "skl.h"
22
23 /* Unique identification for getting NHLT blobs */
24 static guid_t osc_guid =
25         GUID_INIT(0xA69F886E, 0x6CEB, 0x4594,
26                   0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53);
27
28 struct nhlt_acpi_table *skl_nhlt_init(struct device *dev)
29 {
30         acpi_handle handle;
31         union acpi_object *obj;
32         struct nhlt_resource_desc  *nhlt_ptr = NULL;
33         struct nhlt_acpi_table *nhlt_table = NULL;
34
35         handle = ACPI_HANDLE(dev);
36         if (!handle) {
37                 dev_err(dev, "Didn't find ACPI_HANDLE\n");
38                 return NULL;
39         }
40
41         obj = acpi_evaluate_dsm(handle, &osc_guid, 1, 1, NULL);
42         if (obj && obj->type == ACPI_TYPE_BUFFER) {
43                 nhlt_ptr = (struct nhlt_resource_desc  *)obj->buffer.pointer;
44                 nhlt_table = (struct nhlt_acpi_table *)
45                                 memremap(nhlt_ptr->min_addr, nhlt_ptr->length,
46                                 MEMREMAP_WB);
47                 ACPI_FREE(obj);
48                 return nhlt_table;
49         }
50
51         dev_err(dev, "device specific method to extract NHLT blob failed\n");
52         return NULL;
53 }
54
55 void skl_nhlt_free(struct nhlt_acpi_table *nhlt)
56 {
57         memunmap((void *) nhlt);
58 }
59
60 static struct nhlt_specific_cfg *skl_get_specific_cfg(
61                 struct device *dev, struct nhlt_fmt *fmt,
62                 u8 no_ch, u32 rate, u16 bps, u8 linktype)
63 {
64         struct nhlt_specific_cfg *sp_config;
65         struct wav_fmt *wfmt;
66         struct nhlt_fmt_cfg *fmt_config = fmt->fmt_config;
67         int i;
68
69         dev_dbg(dev, "Format count =%d\n", fmt->fmt_count);
70
71         for (i = 0; i < fmt->fmt_count; i++) {
72                 wfmt = &fmt_config->fmt_ext.fmt;
73                 dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", wfmt->channels,
74                          wfmt->bits_per_sample, wfmt->samples_per_sec);
75                 if (wfmt->channels == no_ch && wfmt->bits_per_sample == bps) {
76                         /*
77                          * if link type is dmic ignore rate check as the blob is
78                          * generic for all rates
79                          */
80                         sp_config = &fmt_config->config;
81                         if (linktype == NHLT_LINK_DMIC)
82                                 return sp_config;
83
84                         if (wfmt->samples_per_sec == rate)
85                                 return sp_config;
86                 }
87
88                 fmt_config = (struct nhlt_fmt_cfg *)(fmt_config->config.caps +
89                                                 fmt_config->config.size);
90         }
91
92         return NULL;
93 }
94
95 static void dump_config(struct device *dev, u32 instance_id, u8 linktype,
96                 u8 s_fmt, u8 num_channels, u32 s_rate, u8 dirn, u16 bps)
97 {
98         dev_dbg(dev, "Input configuration\n");
99         dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", num_channels, s_fmt, s_rate);
100         dev_dbg(dev, "vbus_id=%d link_type=%d\n", instance_id, linktype);
101         dev_dbg(dev, "bits_per_sample=%d\n", bps);
102 }
103
104 static bool skl_check_ep_match(struct device *dev, struct nhlt_endpoint *epnt,
105                 u32 instance_id, u8 link_type, u8 dirn, u8 dev_type)
106 {
107         dev_dbg(dev, "vbus_id=%d link_type=%d dir=%d dev_type = %d\n",
108                         epnt->virtual_bus_id, epnt->linktype,
109                         epnt->direction, epnt->device_type);
110
111         if ((epnt->virtual_bus_id == instance_id) &&
112                         (epnt->linktype == link_type) &&
113                         (epnt->direction == dirn) &&
114                         (epnt->device_type == dev_type))
115                 return true;
116         else
117                 return false;
118 }
119
120 struct nhlt_specific_cfg
121 *skl_get_ep_blob(struct skl *skl, u32 instance, u8 link_type,
122                         u8 s_fmt, u8 num_ch, u32 s_rate,
123                         u8 dirn, u8 dev_type)
124 {
125         struct nhlt_fmt *fmt;
126         struct nhlt_endpoint *epnt;
127         struct hdac_bus *bus = ebus_to_hbus(&skl->ebus);
128         struct device *dev = bus->dev;
129         struct nhlt_specific_cfg *sp_config;
130         struct nhlt_acpi_table *nhlt = skl->nhlt;
131         u16 bps = (s_fmt == 16) ? 16 : 32;
132         u8 j;
133
134         dump_config(dev, instance, link_type, s_fmt, num_ch, s_rate, dirn, bps);
135
136         epnt = (struct nhlt_endpoint *)nhlt->desc;
137
138         dev_dbg(dev, "endpoint count =%d\n", nhlt->endpoint_count);
139
140         for (j = 0; j < nhlt->endpoint_count; j++) {
141                 if (skl_check_ep_match(dev, epnt, instance, link_type,
142                                                 dirn, dev_type)) {
143                         fmt = (struct nhlt_fmt *)(epnt->config.caps +
144                                                  epnt->config.size);
145                         sp_config = skl_get_specific_cfg(dev, fmt, num_ch,
146                                                         s_rate, bps, link_type);
147                         if (sp_config)
148                                 return sp_config;
149                 }
150
151                 epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
152         }
153
154         return NULL;
155 }
156
157 int skl_get_dmic_geo(struct skl *skl)
158 {
159         struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
160         struct nhlt_endpoint *epnt;
161         struct nhlt_dmic_array_config *cfg;
162         struct device *dev = &skl->pci->dev;
163         unsigned int dmic_geo = 0;
164         u8 j;
165
166         epnt = (struct nhlt_endpoint *)nhlt->desc;
167
168         for (j = 0; j < nhlt->endpoint_count; j++) {
169                 if (epnt->linktype == NHLT_LINK_DMIC) {
170                         cfg = (struct nhlt_dmic_array_config  *)
171                                         (epnt->config.caps);
172                         switch (cfg->array_type) {
173                         case NHLT_MIC_ARRAY_2CH_SMALL:
174                         case NHLT_MIC_ARRAY_2CH_BIG:
175                                 dmic_geo |= MIC_ARRAY_2CH;
176                                 break;
177
178                         case NHLT_MIC_ARRAY_4CH_1ST_GEOM:
179                         case NHLT_MIC_ARRAY_4CH_L_SHAPED:
180                         case NHLT_MIC_ARRAY_4CH_2ND_GEOM:
181                                 dmic_geo |= MIC_ARRAY_4CH;
182                                 break;
183
184                         default:
185                                 dev_warn(dev, "undefined DMIC array_type 0x%0x\n",
186                                                 cfg->array_type);
187
188                         }
189                 }
190                 epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
191         }
192
193         return dmic_geo;
194 }
195
196 static void skl_nhlt_trim_space(char *trim)
197 {
198         char *s = trim;
199         int cnt;
200         int i;
201
202         cnt = 0;
203         for (i = 0; s[i]; i++) {
204                 if (!isspace(s[i]))
205                         s[cnt++] = s[i];
206         }
207
208         s[cnt] = '\0';
209 }
210
211 int skl_nhlt_update_topology_bin(struct skl *skl)
212 {
213         struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
214         struct hdac_bus *bus = ebus_to_hbus(&skl->ebus);
215         struct device *dev = bus->dev;
216
217         dev_dbg(dev, "oem_id %.6s, oem_table_id %8s oem_revision %d\n",
218                 nhlt->header.oem_id, nhlt->header.oem_table_id,
219                 nhlt->header.oem_revision);
220
221         snprintf(skl->tplg_name, sizeof(skl->tplg_name), "%x-%.6s-%.8s-%d%s",
222                 skl->pci_id, nhlt->header.oem_id, nhlt->header.oem_table_id,
223                 nhlt->header.oem_revision, "-tplg.bin");
224
225         skl_nhlt_trim_space(skl->tplg_name);
226
227         return 0;
228 }
229
230 static ssize_t skl_nhlt_platform_id_show(struct device *dev,
231                         struct device_attribute *attr, char *buf)
232 {
233         struct pci_dev *pci = to_pci_dev(dev);
234         struct hdac_ext_bus *ebus = pci_get_drvdata(pci);
235         struct skl *skl = ebus_to_skl(ebus);
236         struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
237         char platform_id[32];
238
239         sprintf(platform_id, "%x-%.6s-%.8s-%d", skl->pci_id,
240                         nhlt->header.oem_id, nhlt->header.oem_table_id,
241                         nhlt->header.oem_revision);
242
243         skl_nhlt_trim_space(platform_id);
244         return sprintf(buf, "%s\n", platform_id);
245 }
246
247 static DEVICE_ATTR(platform_id, 0444, skl_nhlt_platform_id_show, NULL);
248
249 int skl_nhlt_create_sysfs(struct skl *skl)
250 {
251         struct device *dev = &skl->pci->dev;
252
253         if (sysfs_create_file(&dev->kobj, &dev_attr_platform_id.attr))
254                 dev_warn(dev, "Error creating sysfs entry\n");
255
256         return 0;
257 }
258
259 void skl_nhlt_remove_sysfs(struct skl *skl)
260 {
261         struct device *dev = &skl->pci->dev;
262
263         sysfs_remove_file(&dev->kobj, &dev_attr_platform_id.attr);
264 }