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20#include <linux/pci.h>
21#include "skl.h"
22
23
24static guid_t osc_guid =
25 GUID_INIT(0xA69F886E, 0x6CEB, 0x4594,
26 0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53);
27
28struct 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
55void skl_nhlt_free(struct nhlt_acpi_table *nhlt)
56{
57 memunmap((void *) nhlt);
58}
59
60static 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
78
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
95static 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
104static 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
120struct 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
157int 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
196static 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
211int 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
230static 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
247static DEVICE_ATTR(platform_id, 0444, skl_nhlt_platform_id_show, NULL);
248
249int 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
259void 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}
265
