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20#include "skl.h"
21
22
23static u8 OSC_UUID[16] = {0x6E, 0x88, 0x9F, 0xA6, 0xEB, 0x6C, 0x94, 0x45,
24 0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53};
25
26#define DSDT_NHLT_PATH "\\_SB.PCI0.HDAS"
27
28void *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
34 if (ACPI_FAILURE(acpi_get_handle(NULL, DSDT_NHLT_PATH, &handle))) {
35 dev_err(dev, "Requested NHLT device not found\n");
36 return NULL;
37 }
38
39 obj = acpi_evaluate_dsm(handle, OSC_UUID, 1, 1, NULL);
40 if (obj && obj->type == ACPI_TYPE_BUFFER) {
41 nhlt_ptr = (struct nhlt_resource_desc *)obj->buffer.pointer;
42
43 return memremap(nhlt_ptr->min_addr, nhlt_ptr->length,
44 MEMREMAP_WB);
45 }
46
47 dev_err(dev, "device specific method to extract NHLT blob failed\n");
48 return NULL;
49}
50
51void skl_nhlt_free(void *addr)
52{
53 memunmap(addr);
54}
55
56static struct nhlt_specific_cfg *skl_get_specific_cfg(
57 struct device *dev, struct nhlt_fmt *fmt,
58 u8 no_ch, u32 rate, u16 bps, u8 linktype)
59{
60 struct nhlt_specific_cfg *sp_config;
61 struct wav_fmt *wfmt;
62 struct nhlt_fmt_cfg *fmt_config = fmt->fmt_config;
63 int i;
64
65 dev_dbg(dev, "Format count =%d\n", fmt->fmt_count);
66
67 for (i = 0; i < fmt->fmt_count; i++) {
68 wfmt = &fmt_config->fmt_ext.fmt;
69 dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", wfmt->channels,
70 wfmt->bits_per_sample, wfmt->samples_per_sec);
71 if (wfmt->channels == no_ch && wfmt->bits_per_sample == bps) {
72
73
74
75
76 sp_config = &fmt_config->config;
77 if (linktype == NHLT_LINK_DMIC)
78 return sp_config;
79
80 if (wfmt->samples_per_sec == rate)
81 return sp_config;
82 }
83
84 fmt_config = (struct nhlt_fmt_cfg *)(fmt_config->config.caps +
85 fmt_config->config.size);
86 }
87
88 return NULL;
89}
90
91static void dump_config(struct device *dev, u32 instance_id, u8 linktype,
92 u8 s_fmt, u8 num_channels, u32 s_rate, u8 dirn, u16 bps)
93{
94 dev_dbg(dev, "Input configuration\n");
95 dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", num_channels, s_fmt, s_rate);
96 dev_dbg(dev, "vbus_id=%d link_type=%d\n", instance_id, linktype);
97 dev_dbg(dev, "bits_per_sample=%d\n", bps);
98}
99
100static bool skl_check_ep_match(struct device *dev, struct nhlt_endpoint *epnt,
101 u32 instance_id, u8 link_type, u8 dirn)
102{
103 dev_dbg(dev, "vbus_id=%d link_type=%d dir=%d\n",
104 epnt->virtual_bus_id, epnt->linktype, epnt->direction);
105
106 if ((epnt->virtual_bus_id == instance_id) &&
107 (epnt->linktype == link_type) &&
108 (epnt->direction == dirn))
109 return true;
110 else
111 return false;
112}
113
114struct nhlt_specific_cfg
115*skl_get_ep_blob(struct skl *skl, u32 instance, u8 link_type,
116 u8 s_fmt, u8 num_ch, u32 s_rate, u8 dirn)
117{
118 struct nhlt_fmt *fmt;
119 struct nhlt_endpoint *epnt;
120 struct hdac_bus *bus = ebus_to_hbus(&skl->ebus);
121 struct device *dev = bus->dev;
122 struct nhlt_specific_cfg *sp_config;
123 struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
124 u16 bps = (s_fmt == 16) ? 16 : 32;
125 u8 j;
126
127 dump_config(dev, instance, link_type, s_fmt, num_ch, s_rate, dirn, bps);
128
129 epnt = (struct nhlt_endpoint *)nhlt->desc;
130
131 dev_dbg(dev, "endpoint count =%d\n", nhlt->endpoint_count);
132
133 for (j = 0; j < nhlt->endpoint_count; j++) {
134 if (skl_check_ep_match(dev, epnt, instance, link_type, dirn)) {
135 fmt = (struct nhlt_fmt *)(epnt->config.caps +
136 epnt->config.size);
137 sp_config = skl_get_specific_cfg(dev, fmt, num_ch,
138 s_rate, bps, link_type);
139 if (sp_config)
140 return sp_config;
141 }
142
143 epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
144 }
145
146 return NULL;
147}
148
149static void skl_nhlt_trim_space(struct skl *skl)
150{
151 char *s = skl->tplg_name;
152 int cnt;
153 int i;
154
155 cnt = 0;
156 for (i = 0; s[i]; i++) {
157 if (!isspace(s[i]))
158 s[cnt++] = s[i];
159 }
160
161 s[cnt] = '\0';
162}
163
164int skl_nhlt_update_topology_bin(struct skl *skl)
165{
166 struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
167 struct hdac_bus *bus = ebus_to_hbus(&skl->ebus);
168 struct device *dev = bus->dev;
169
170 dev_dbg(dev, "oem_id %.6s, oem_table_id %8s oem_revision %d\n",
171 nhlt->header.oem_id, nhlt->header.oem_table_id,
172 nhlt->header.oem_revision);
173
174 snprintf(skl->tplg_name, sizeof(skl->tplg_name), "%x-%.6s-%.8s-%d%s",
175 skl->pci_id, nhlt->header.oem_id, nhlt->header.oem_table_id,
176 nhlt->header.oem_revision, "-tplg.bin");
177
178 skl_nhlt_trim_space(skl);
179
180 return 0;
181}
182
