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473eb87a JK |
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 | */ | |
f65cf7d6 | 20 | #include <linux/pci.h> |
473eb87a JK |
21 | #include "skl.h" |
22 | ||
23 | /* Unique identification for getting NHLT blobs */ | |
24 | static u8 OSC_UUID[16] = {0x6E, 0x88, 0x9F, 0xA6, 0xEB, 0x6C, 0x94, 0x45, | |
25 | 0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53}; | |
26 | ||
27 | #define DSDT_NHLT_PATH "\\_SB.PCI0.HDAS" | |
28 | ||
c286b3f9 | 29 | struct nhlt_acpi_table *skl_nhlt_init(struct device *dev) |
473eb87a JK |
30 | { |
31 | acpi_handle handle; | |
32 | union acpi_object *obj; | |
33 | struct nhlt_resource_desc *nhlt_ptr = NULL; | |
c286b3f9 | 34 | struct nhlt_acpi_table *nhlt_table = NULL; |
473eb87a JK |
35 | |
36 | if (ACPI_FAILURE(acpi_get_handle(NULL, DSDT_NHLT_PATH, &handle))) { | |
37 | dev_err(dev, "Requested NHLT device not found\n"); | |
38 | return NULL; | |
39 | } | |
40 | ||
41 | obj = acpi_evaluate_dsm(handle, OSC_UUID, 1, 1, NULL); | |
42 | if (obj && obj->type == ACPI_TYPE_BUFFER) { | |
43 | nhlt_ptr = (struct nhlt_resource_desc *)obj->buffer.pointer; | |
c286b3f9 JK |
44 | nhlt_table = (struct nhlt_acpi_table *) |
45 | memremap(nhlt_ptr->min_addr, nhlt_ptr->length, | |
ba40a854 | 46 | MEMREMAP_WB); |
c286b3f9 JK |
47 | ACPI_FREE(obj); |
48 | return nhlt_table; | |
473eb87a JK |
49 | } |
50 | ||
51 | dev_err(dev, "device specific method to extract NHLT blob failed\n"); | |
52 | return NULL; | |
53 | } | |
54 | ||
c286b3f9 | 55 | void skl_nhlt_free(struct nhlt_acpi_table *nhlt) |
473eb87a | 56 | { |
c286b3f9 | 57 | memunmap((void *) nhlt); |
473eb87a JK |
58 | } |
59 | ||
60 | static struct nhlt_specific_cfg *skl_get_specific_cfg( | |
61 | struct device *dev, struct nhlt_fmt *fmt, | |
16882d24 | 62 | u8 no_ch, u32 rate, u16 bps, u8 linktype) |
473eb87a JK |
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); | |
16882d24 JK |
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 | */ | |
473eb87a | 80 | sp_config = &fmt_config->config; |
16882d24 JK |
81 | if (linktype == NHLT_LINK_DMIC) |
82 | return sp_config; | |
473eb87a | 83 | |
16882d24 JK |
84 | if (wfmt->samples_per_sec == rate) |
85 | return sp_config; | |
473eb87a JK |
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) | |
106 | { | |
107 | dev_dbg(dev, "vbus_id=%d link_type=%d dir=%d\n", | |
108 | epnt->virtual_bus_id, epnt->linktype, epnt->direction); | |
109 | ||
110 | if ((epnt->virtual_bus_id == instance_id) && | |
111 | (epnt->linktype == link_type) && | |
112 | (epnt->direction == dirn)) | |
113 | return true; | |
114 | else | |
115 | return false; | |
116 | } | |
117 | ||
118 | struct nhlt_specific_cfg | |
119 | *skl_get_ep_blob(struct skl *skl, u32 instance, u8 link_type, | |
120 | u8 s_fmt, u8 num_ch, u32 s_rate, u8 dirn) | |
121 | { | |
122 | struct nhlt_fmt *fmt; | |
123 | struct nhlt_endpoint *epnt; | |
124 | struct hdac_bus *bus = ebus_to_hbus(&skl->ebus); | |
125 | struct device *dev = bus->dev; | |
126 | struct nhlt_specific_cfg *sp_config; | |
c286b3f9 | 127 | struct nhlt_acpi_table *nhlt = skl->nhlt; |
83b50246 | 128 | u16 bps = (s_fmt == 16) ? 16 : 32; |
473eb87a JK |
129 | u8 j; |
130 | ||
131 | dump_config(dev, instance, link_type, s_fmt, num_ch, s_rate, dirn, bps); | |
132 | ||
133 | epnt = (struct nhlt_endpoint *)nhlt->desc; | |
134 | ||
135 | dev_dbg(dev, "endpoint count =%d\n", nhlt->endpoint_count); | |
136 | ||
137 | for (j = 0; j < nhlt->endpoint_count; j++) { | |
138 | if (skl_check_ep_match(dev, epnt, instance, link_type, dirn)) { | |
139 | fmt = (struct nhlt_fmt *)(epnt->config.caps + | |
140 | epnt->config.size); | |
16882d24 JK |
141 | sp_config = skl_get_specific_cfg(dev, fmt, num_ch, |
142 | s_rate, bps, link_type); | |
473eb87a JK |
143 | if (sp_config) |
144 | return sp_config; | |
145 | } | |
146 | ||
147 | epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length); | |
148 | } | |
149 | ||
150 | return NULL; | |
151 | } | |
4b235c43 | 152 | |
f65cf7d6 YZ |
153 | int skl_get_dmic_geo(struct skl *skl) |
154 | { | |
155 | struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt; | |
156 | struct nhlt_endpoint *epnt; | |
157 | struct nhlt_dmic_array_config *cfg; | |
158 | struct device *dev = &skl->pci->dev; | |
159 | unsigned int dmic_geo = 0; | |
160 | u8 j; | |
161 | ||
162 | epnt = (struct nhlt_endpoint *)nhlt->desc; | |
163 | ||
164 | for (j = 0; j < nhlt->endpoint_count; j++) { | |
165 | if (epnt->linktype == NHLT_LINK_DMIC) { | |
166 | cfg = (struct nhlt_dmic_array_config *) | |
167 | (epnt->config.caps); | |
168 | switch (cfg->array_type) { | |
169 | case NHLT_MIC_ARRAY_2CH_SMALL: | |
170 | case NHLT_MIC_ARRAY_2CH_BIG: | |
171 | dmic_geo |= MIC_ARRAY_2CH; | |
172 | break; | |
173 | ||
174 | case NHLT_MIC_ARRAY_4CH_1ST_GEOM: | |
175 | case NHLT_MIC_ARRAY_4CH_L_SHAPED: | |
176 | case NHLT_MIC_ARRAY_4CH_2ND_GEOM: | |
177 | dmic_geo |= MIC_ARRAY_4CH; | |
178 | break; | |
179 | ||
180 | default: | |
181 | dev_warn(dev, "undefined DMIC array_type 0x%0x\n", | |
182 | cfg->array_type); | |
183 | ||
184 | } | |
185 | } | |
186 | epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length); | |
187 | } | |
188 | ||
189 | return dmic_geo; | |
190 | } | |
191 | ||
4b235c43 VK |
192 | static void skl_nhlt_trim_space(struct skl *skl) |
193 | { | |
194 | char *s = skl->tplg_name; | |
195 | int cnt; | |
196 | int i; | |
197 | ||
198 | cnt = 0; | |
199 | for (i = 0; s[i]; i++) { | |
200 | if (!isspace(s[i])) | |
201 | s[cnt++] = s[i]; | |
202 | } | |
203 | ||
204 | s[cnt] = '\0'; | |
205 | } | |
206 | ||
207 | int skl_nhlt_update_topology_bin(struct skl *skl) | |
208 | { | |
209 | struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt; | |
210 | struct hdac_bus *bus = ebus_to_hbus(&skl->ebus); | |
211 | struct device *dev = bus->dev; | |
212 | ||
213 | dev_dbg(dev, "oem_id %.6s, oem_table_id %8s oem_revision %d\n", | |
214 | nhlt->header.oem_id, nhlt->header.oem_table_id, | |
215 | nhlt->header.oem_revision); | |
216 | ||
217 | snprintf(skl->tplg_name, sizeof(skl->tplg_name), "%x-%.6s-%.8s-%d%s", | |
218 | skl->pci_id, nhlt->header.oem_id, nhlt->header.oem_table_id, | |
219 | nhlt->header.oem_revision, "-tplg.bin"); | |
220 | ||
221 | skl_nhlt_trim_space(skl); | |
222 | ||
223 | return 0; | |
224 | } |