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19#include <linux/init.h>
20#include <linux/module.h>
21#include <linux/pci.h>
22#include <linux/component.h>
23#include <drm/i915_component.h>
24#include <sound/core.h>
25#include "hda_controller.h"
26#include "hda_intel.h"
27
28
29
30
31
32
33#define AZX_REG_EM4 0x100c
34#define AZX_REG_EM5 0x1010
35
36int hda_display_power(struct hda_intel *hda, bool enable)
37{
38 struct i915_audio_component *acomp = &hda->audio_component;
39
40 if (!acomp->ops)
41 return -ENODEV;
42
43 dev_dbg(&hda->chip.pci->dev, "display power %s\n",
44 enable ? "enable" : "disable");
45 if (enable)
46 acomp->ops->get_power(acomp->dev);
47 else
48 acomp->ops->put_power(acomp->dev);
49
50 return 0;
51}
52
53void haswell_set_bclk(struct hda_intel *hda)
54{
55 int cdclk_freq;
56 unsigned int bclk_m, bclk_n;
57 struct i915_audio_component *acomp = &hda->audio_component;
58 struct pci_dev *pci = hda->chip.pci;
59
60
61 if (pci->device != 0x0a0c && pci->device != 0x0c0c
62 && pci->device != 0x0d0c && pci->device != 0x160c)
63 return;
64
65 if (!acomp->ops)
66 return;
67
68 cdclk_freq = acomp->ops->get_cdclk_freq(acomp->dev);
69 switch (cdclk_freq) {
70 case 337500:
71 bclk_m = 16;
72 bclk_n = 225;
73 break;
74
75 case 450000:
76 default:
77 bclk_m = 4;
78 bclk_n = 75;
79 break;
80
81 case 540000:
82 bclk_m = 4;
83 bclk_n = 90;
84 break;
85
86 case 675000:
87 bclk_m = 8;
88 bclk_n = 225;
89 break;
90 }
91
92 azx_writew(&hda->chip, EM4, bclk_m);
93 azx_writew(&hda->chip, EM5, bclk_n);
94}
95
96static int hda_component_master_bind(struct device *dev)
97{
98 struct snd_card *card = dev_get_drvdata(dev);
99 struct azx *chip = card->private_data;
100 struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
101 struct i915_audio_component *acomp = &hda->audio_component;
102 int ret;
103
104 ret = component_bind_all(dev, acomp);
105 if (ret < 0)
106 return ret;
107
108 if (WARN_ON(!(acomp->dev && acomp->ops && acomp->ops->get_power &&
109 acomp->ops->put_power && acomp->ops->get_cdclk_freq))) {
110 ret = -EINVAL;
111 goto out_unbind;
112 }
113
114
115
116
117
118 if (!try_module_get(acomp->ops->owner)) {
119 ret = -ENODEV;
120 goto out_unbind;
121 }
122
123 return 0;
124
125out_unbind:
126 component_unbind_all(dev, acomp);
127
128 return ret;
129}
130
131static void hda_component_master_unbind(struct device *dev)
132{
133 struct snd_card *card = dev_get_drvdata(dev);
134 struct azx *chip = card->private_data;
135 struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
136 struct i915_audio_component *acomp = &hda->audio_component;
137
138 module_put(acomp->ops->owner);
139 component_unbind_all(dev, acomp);
140 WARN_ON(acomp->ops || acomp->dev);
141}
142
143static const struct component_master_ops hda_component_master_ops = {
144 .bind = hda_component_master_bind,
145 .unbind = hda_component_master_unbind,
146};
147
148static int hda_component_master_match(struct device *dev, void *data)
149{
150
151 return !strcmp(dev->driver->name, "i915");
152}
153
154int hda_i915_init(struct hda_intel *hda)
155{
156 struct component_match *match = NULL;
157 struct device *dev = &hda->chip.pci->dev;
158 struct i915_audio_component *acomp = &hda->audio_component;
159 int ret;
160
161 component_match_add(dev, &match, hda_component_master_match, hda);
162 ret = component_master_add_with_match(dev, &hda_component_master_ops,
163 match);
164 if (ret < 0)
165 goto out_err;
166
167
168
169
170
171 request_module("i915");
172
173 if (!acomp->ops) {
174 ret = -ENODEV;
175 goto out_master_del;
176 }
177
178 dev_dbg(dev, "bound to i915 component master\n");
179
180 return 0;
181out_master_del:
182 component_master_del(dev, &hda_component_master_ops);
183out_err:
184 dev_err(dev, "failed to add i915 component master (%d)\n", ret);
185
186 return ret;
187}
188
189int hda_i915_exit(struct hda_intel *hda)
190{
191 struct device *dev = &hda->chip.pci->dev;
192
193 component_master_del(dev, &hda_component_master_ops);
194
195 return 0;
196}
197