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ef07b491 AZ |
1 | /* |
2 | * Marvell 88w8618 audio emulation extracted from | |
3 | * Marvell MV88w8618 / Freecom MusicPal emulation. | |
4 | * | |
5 | * Copyright (c) 2008 Jan Kiszka | |
6 | * | |
8e31bf38 | 7 | * This code is licensed under the GNU GPL v2. |
6b620ca3 PB |
8 | * |
9 | * Contributions after 2012-01-13 are licensed under the terms of the | |
10 | * GNU GPL, version 2 or (at your option) any later version. | |
ef07b491 | 11 | */ |
0b8fa32f | 12 | |
6086a565 | 13 | #include "qemu/osdep.h" |
83c9f4ca | 14 | #include "hw/sysbus.h" |
d6454270 | 15 | #include "migration/vmstate.h" |
64552b6b | 16 | #include "hw/irq.h" |
a27bd6c7 | 17 | #include "hw/qdev-properties.h" |
7ab14c5a | 18 | #include "hw/audio/wm8750.h" |
ef07b491 | 19 | #include "audio/audio.h" |
a8299ec1 | 20 | #include "qapi/error.h" |
0b8fa32f | 21 | #include "qemu/module.h" |
ef07b491 AZ |
22 | |
23 | #define MP_AUDIO_SIZE 0x00001000 | |
24 | ||
25 | /* Audio register offsets */ | |
26 | #define MP_AUDIO_PLAYBACK_MODE 0x00 | |
27 | #define MP_AUDIO_CLOCK_DIV 0x18 | |
28 | #define MP_AUDIO_IRQ_STATUS 0x20 | |
29 | #define MP_AUDIO_IRQ_ENABLE 0x24 | |
30 | #define MP_AUDIO_TX_START_LO 0x28 | |
31 | #define MP_AUDIO_TX_THRESHOLD 0x2C | |
32 | #define MP_AUDIO_TX_STATUS 0x38 | |
33 | #define MP_AUDIO_TX_START_HI 0x40 | |
34 | ||
35 | /* Status register and IRQ enable bits */ | |
36 | #define MP_AUDIO_TX_HALF (1 << 6) | |
37 | #define MP_AUDIO_TX_FULL (1 << 7) | |
38 | ||
39 | /* Playback mode bits */ | |
40 | #define MP_AUDIO_16BIT_SAMPLE (1 << 0) | |
41 | #define MP_AUDIO_PLAYBACK_EN (1 << 7) | |
42 | #define MP_AUDIO_CLOCK_24MHZ (1 << 9) | |
43 | #define MP_AUDIO_MONO (1 << 14) | |
44 | ||
9e3f8599 AF |
45 | #define MV88W8618_AUDIO(obj) \ |
46 | OBJECT_CHECK(mv88w8618_audio_state, (obj), TYPE_MV88W8618_AUDIO) | |
47 | ||
ef07b491 | 48 | typedef struct mv88w8618_audio_state { |
9e3f8599 AF |
49 | SysBusDevice parent_obj; |
50 | ||
e2ba99e9 | 51 | MemoryRegion iomem; |
ef07b491 AZ |
52 | qemu_irq irq; |
53 | uint32_t playback_mode; | |
54 | uint32_t status; | |
55 | uint32_t irq_enable; | |
d5b61ddd | 56 | uint32_t phys_buf; |
ef07b491 | 57 | uint32_t target_buffer; |
d5b61ddd JK |
58 | uint32_t threshold; |
59 | uint32_t play_pos; | |
60 | uint32_t last_free; | |
ef07b491 | 61 | uint32_t clock_div; |
e855761c | 62 | void *wm; |
ef07b491 AZ |
63 | } mv88w8618_audio_state; |
64 | ||
65 | static void mv88w8618_audio_callback(void *opaque, int free_out, int free_in) | |
66 | { | |
67 | mv88w8618_audio_state *s = opaque; | |
68 | int16_t *codec_buffer; | |
69 | int8_t buf[4096]; | |
70 | int8_t *mem_buffer; | |
71 | int pos, block_size; | |
72 | ||
49fedd0d | 73 | if (!(s->playback_mode & MP_AUDIO_PLAYBACK_EN)) { |
ef07b491 | 74 | return; |
49fedd0d JK |
75 | } |
76 | if (s->playback_mode & MP_AUDIO_16BIT_SAMPLE) { | |
ef07b491 | 77 | free_out <<= 1; |
49fedd0d JK |
78 | } |
79 | if (!(s->playback_mode & MP_AUDIO_MONO)) { | |
ef07b491 | 80 | free_out <<= 1; |
49fedd0d | 81 | } |
ef07b491 | 82 | block_size = s->threshold / 2; |
49fedd0d | 83 | if (free_out - s->last_free < block_size) { |
ef07b491 | 84 | return; |
49fedd0d JK |
85 | } |
86 | if (block_size > 4096) { | |
ef07b491 | 87 | return; |
49fedd0d | 88 | } |
e1fe50dc | 89 | cpu_physical_memory_read(s->target_buffer + s->play_pos, buf, block_size); |
ef07b491 AZ |
90 | mem_buffer = buf; |
91 | if (s->playback_mode & MP_AUDIO_16BIT_SAMPLE) { | |
92 | if (s->playback_mode & MP_AUDIO_MONO) { | |
93 | codec_buffer = wm8750_dac_buffer(s->wm, block_size >> 1); | |
94 | for (pos = 0; pos < block_size; pos += 2) { | |
95 | *codec_buffer++ = *(int16_t *)mem_buffer; | |
96 | *codec_buffer++ = *(int16_t *)mem_buffer; | |
97 | mem_buffer += 2; | |
98 | } | |
49fedd0d | 99 | } else { |
ef07b491 AZ |
100 | memcpy(wm8750_dac_buffer(s->wm, block_size >> 2), |
101 | (uint32_t *)mem_buffer, block_size); | |
49fedd0d | 102 | } |
ef07b491 AZ |
103 | } else { |
104 | if (s->playback_mode & MP_AUDIO_MONO) { | |
105 | codec_buffer = wm8750_dac_buffer(s->wm, block_size); | |
106 | for (pos = 0; pos < block_size; pos++) { | |
107 | *codec_buffer++ = cpu_to_le16(256 * *mem_buffer); | |
108 | *codec_buffer++ = cpu_to_le16(256 * *mem_buffer++); | |
109 | } | |
110 | } else { | |
111 | codec_buffer = wm8750_dac_buffer(s->wm, block_size >> 1); | |
112 | for (pos = 0; pos < block_size; pos += 2) { | |
113 | *codec_buffer++ = cpu_to_le16(256 * *mem_buffer++); | |
114 | *codec_buffer++ = cpu_to_le16(256 * *mem_buffer++); | |
115 | } | |
116 | } | |
117 | } | |
118 | wm8750_dac_commit(s->wm); | |
119 | ||
120 | s->last_free = free_out - block_size; | |
121 | ||
122 | if (s->play_pos == 0) { | |
123 | s->status |= MP_AUDIO_TX_HALF; | |
124 | s->play_pos = block_size; | |
125 | } else { | |
126 | s->status |= MP_AUDIO_TX_FULL; | |
127 | s->play_pos = 0; | |
128 | } | |
129 | ||
49fedd0d | 130 | if (s->status & s->irq_enable) { |
ef07b491 | 131 | qemu_irq_raise(s->irq); |
49fedd0d | 132 | } |
ef07b491 AZ |
133 | } |
134 | ||
135 | static void mv88w8618_audio_clock_update(mv88w8618_audio_state *s) | |
136 | { | |
137 | int rate; | |
138 | ||
49fedd0d | 139 | if (s->playback_mode & MP_AUDIO_CLOCK_24MHZ) { |
ef07b491 | 140 | rate = 24576000 / 64; /* 24.576MHz */ |
49fedd0d | 141 | } else { |
ef07b491 | 142 | rate = 11289600 / 64; /* 11.2896MHz */ |
49fedd0d | 143 | } |
ef07b491 AZ |
144 | rate /= ((s->clock_div >> 8) & 0xff) + 1; |
145 | ||
146 | wm8750_set_bclk_in(s->wm, rate); | |
147 | } | |
148 | ||
a8170e5e | 149 | static uint64_t mv88w8618_audio_read(void *opaque, hwaddr offset, |
e2ba99e9 | 150 | unsigned size) |
ef07b491 AZ |
151 | { |
152 | mv88w8618_audio_state *s = opaque; | |
153 | ||
154 | switch (offset) { | |
155 | case MP_AUDIO_PLAYBACK_MODE: | |
156 | return s->playback_mode; | |
157 | ||
158 | case MP_AUDIO_CLOCK_DIV: | |
159 | return s->clock_div; | |
160 | ||
161 | case MP_AUDIO_IRQ_STATUS: | |
162 | return s->status; | |
163 | ||
164 | case MP_AUDIO_IRQ_ENABLE: | |
165 | return s->irq_enable; | |
166 | ||
167 | case MP_AUDIO_TX_STATUS: | |
168 | return s->play_pos >> 2; | |
169 | ||
170 | default: | |
171 | return 0; | |
172 | } | |
173 | } | |
174 | ||
a8170e5e | 175 | static void mv88w8618_audio_write(void *opaque, hwaddr offset, |
e2ba99e9 | 176 | uint64_t value, unsigned size) |
ef07b491 AZ |
177 | { |
178 | mv88w8618_audio_state *s = opaque; | |
179 | ||
180 | switch (offset) { | |
181 | case MP_AUDIO_PLAYBACK_MODE: | |
182 | if (value & MP_AUDIO_PLAYBACK_EN && | |
183 | !(s->playback_mode & MP_AUDIO_PLAYBACK_EN)) { | |
184 | s->status = 0; | |
185 | s->last_free = 0; | |
186 | s->play_pos = 0; | |
187 | } | |
188 | s->playback_mode = value; | |
189 | mv88w8618_audio_clock_update(s); | |
190 | break; | |
191 | ||
192 | case MP_AUDIO_CLOCK_DIV: | |
193 | s->clock_div = value; | |
194 | s->last_free = 0; | |
195 | s->play_pos = 0; | |
196 | mv88w8618_audio_clock_update(s); | |
197 | break; | |
198 | ||
199 | case MP_AUDIO_IRQ_STATUS: | |
200 | s->status &= ~value; | |
201 | break; | |
202 | ||
203 | case MP_AUDIO_IRQ_ENABLE: | |
204 | s->irq_enable = value; | |
49fedd0d | 205 | if (s->status & s->irq_enable) { |
ef07b491 | 206 | qemu_irq_raise(s->irq); |
49fedd0d | 207 | } |
ef07b491 AZ |
208 | break; |
209 | ||
210 | case MP_AUDIO_TX_START_LO: | |
211 | s->phys_buf = (s->phys_buf & 0xFFFF0000) | (value & 0xFFFF); | |
212 | s->target_buffer = s->phys_buf; | |
213 | s->play_pos = 0; | |
214 | s->last_free = 0; | |
215 | break; | |
216 | ||
217 | case MP_AUDIO_TX_THRESHOLD: | |
218 | s->threshold = (value + 1) * 4; | |
219 | break; | |
220 | ||
221 | case MP_AUDIO_TX_START_HI: | |
222 | s->phys_buf = (s->phys_buf & 0xFFFF) | (value << 16); | |
223 | s->target_buffer = s->phys_buf; | |
224 | s->play_pos = 0; | |
225 | s->last_free = 0; | |
226 | break; | |
227 | } | |
228 | } | |
229 | ||
d5b61ddd | 230 | static void mv88w8618_audio_reset(DeviceState *d) |
ef07b491 | 231 | { |
9e3f8599 | 232 | mv88w8618_audio_state *s = MV88W8618_AUDIO(d); |
ef07b491 AZ |
233 | |
234 | s->playback_mode = 0; | |
235 | s->status = 0; | |
236 | s->irq_enable = 0; | |
267c4840 JK |
237 | s->clock_div = 0; |
238 | s->threshold = 0; | |
239 | s->phys_buf = 0; | |
ef07b491 AZ |
240 | } |
241 | ||
e2ba99e9 BC |
242 | static const MemoryRegionOps mv88w8618_audio_ops = { |
243 | .read = mv88w8618_audio_read, | |
244 | .write = mv88w8618_audio_write, | |
245 | .endianness = DEVICE_NATIVE_ENDIAN, | |
ef07b491 AZ |
246 | }; |
247 | ||
c025d0ab | 248 | static void mv88w8618_audio_init(Object *obj) |
ef07b491 | 249 | { |
c025d0ab | 250 | SysBusDevice *dev = SYS_BUS_DEVICE(obj); |
9e3f8599 | 251 | mv88w8618_audio_state *s = MV88W8618_AUDIO(dev); |
ef07b491 AZ |
252 | |
253 | sysbus_init_irq(dev, &s->irq); | |
254 | ||
c025d0ab | 255 | memory_region_init_io(&s->iomem, obj, &mv88w8618_audio_ops, s, |
e2ba99e9 | 256 | "audio", MP_AUDIO_SIZE); |
750ecd44 | 257 | sysbus_init_mmio(dev, &s->iomem); |
a8299ec1 MZ |
258 | |
259 | object_property_add_link(OBJECT(dev), "wm8750", TYPE_WM8750, | |
260 | (Object **) &s->wm, | |
261 | qdev_prop_allow_set_link_before_realize, | |
d2623129 | 262 | 0); |
c025d0ab | 263 | } |
ef07b491 | 264 | |
c025d0ab XZ |
265 | static void mv88w8618_audio_realize(DeviceState *dev, Error **errp) |
266 | { | |
267 | mv88w8618_audio_state *s = MV88W8618_AUDIO(dev); | |
268 | ||
269 | wm8750_data_req_set(s->wm, mv88w8618_audio_callback, s); | |
ef07b491 AZ |
270 | } |
271 | ||
d5b61ddd JK |
272 | static const VMStateDescription mv88w8618_audio_vmsd = { |
273 | .name = "mv88w8618_audio", | |
274 | .version_id = 1, | |
275 | .minimum_version_id = 1, | |
d5b61ddd JK |
276 | .fields = (VMStateField[]) { |
277 | VMSTATE_UINT32(playback_mode, mv88w8618_audio_state), | |
278 | VMSTATE_UINT32(status, mv88w8618_audio_state), | |
279 | VMSTATE_UINT32(irq_enable, mv88w8618_audio_state), | |
280 | VMSTATE_UINT32(phys_buf, mv88w8618_audio_state), | |
281 | VMSTATE_UINT32(target_buffer, mv88w8618_audio_state), | |
282 | VMSTATE_UINT32(threshold, mv88w8618_audio_state), | |
283 | VMSTATE_UINT32(play_pos, mv88w8618_audio_state), | |
284 | VMSTATE_UINT32(last_free, mv88w8618_audio_state), | |
285 | VMSTATE_UINT32(clock_div, mv88w8618_audio_state), | |
286 | VMSTATE_END_OF_LIST() | |
287 | } | |
288 | }; | |
289 | ||
999e12bb AL |
290 | static void mv88w8618_audio_class_init(ObjectClass *klass, void *data) |
291 | { | |
39bffca2 | 292 | DeviceClass *dc = DEVICE_CLASS(klass); |
999e12bb | 293 | |
c025d0ab | 294 | dc->realize = mv88w8618_audio_realize; |
39bffca2 AL |
295 | dc->reset = mv88w8618_audio_reset; |
296 | dc->vmsd = &mv88w8618_audio_vmsd; | |
e90f2a8c | 297 | dc->user_creatable = false; |
999e12bb AL |
298 | } |
299 | ||
8c43a6f0 | 300 | static const TypeInfo mv88w8618_audio_info = { |
9e3f8599 | 301 | .name = TYPE_MV88W8618_AUDIO, |
39bffca2 AL |
302 | .parent = TYPE_SYS_BUS_DEVICE, |
303 | .instance_size = sizeof(mv88w8618_audio_state), | |
c025d0ab | 304 | .instance_init = mv88w8618_audio_init, |
39bffca2 | 305 | .class_init = mv88w8618_audio_class_init, |
ef07b491 | 306 | }; |
ef07b491 | 307 | |
83f7d43a | 308 | static void mv88w8618_register_types(void) |
ef07b491 | 309 | { |
39bffca2 | 310 | type_register_static(&mv88w8618_audio_info); |
ef07b491 AZ |
311 | } |
312 | ||
83f7d43a | 313 | type_init(mv88w8618_register_types) |