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avr32: fix kernel panic when using ondemand cpufreq givernor
[openwrt.git] / target / linux / olpc / patches / 110-olpc_sound.patch
1 Index: linux-2.6.23.17/include/sound/ac97_codec.h
2 ===================================================================
3 --- linux-2.6.23.17.orig/include/sound/ac97_codec.h
4 +++ linux-2.6.23.17/include/sound/ac97_codec.h
5 @@ -281,10 +281,12 @@
6 /* specific - Analog Devices */
7 #define AC97_AD_TEST 0x5a /* test register */
8 #define AC97_AD_TEST2 0x5c /* undocumented test register 2 */
9 +#define AC97_AD_HPFD_SHIFT 12 /* High Pass Filter Disable */
10 #define AC97_AD_CODEC_CFG 0x70 /* codec configuration */
11 #define AC97_AD_JACK_SPDIF 0x72 /* Jack Sense & S/PDIF */
12 #define AC97_AD_SERIAL_CFG 0x74 /* Serial Configuration */
13 #define AC97_AD_MISC 0x76 /* Misc Control Bits */
14 +#define AC97_AD_VREFD_SHIFT 2 /* V_REFOUT Disable (AD1888) */
15
16 /* specific - Cirrus Logic */
17 #define AC97_CSR_ACMODE 0x5e /* AC Mode Register */
18 Index: linux-2.6.23.17/sound/pci/ac97/ac97_codec.c
19 ===================================================================
20 --- linux-2.6.23.17.orig/sound/pci/ac97/ac97_codec.c
21 +++ linux-2.6.23.17/sound/pci/ac97/ac97_codec.c
22 @@ -49,7 +49,7 @@ module_param(enable_loopback, bool, 0444
23 MODULE_PARM_DESC(enable_loopback, "Enable AC97 ADC/DAC Loopback Control");
24
25 #ifdef CONFIG_SND_AC97_POWER_SAVE
26 -static int power_save;
27 +static int power_save = 1;
28 module_param(power_save, bool, 0644);
29 MODULE_PARM_DESC(power_save, "Enable AC97 power-saving control");
30 #endif
31 Index: linux-2.6.23.17/sound/pci/ac97/ac97_patch.c
32 ===================================================================
33 --- linux-2.6.23.17.orig/sound/pci/ac97/ac97_patch.c
34 +++ linux-2.6.23.17/sound/pci/ac97/ac97_patch.c
35 @@ -1973,8 +1973,9 @@ static const struct snd_kcontrol_new snd
36 .get = snd_ac97_ad1888_lohpsel_get,
37 .put = snd_ac97_ad1888_lohpsel_put
38 },
39 - AC97_SINGLE("V_REFOUT Enable", AC97_AD_MISC, 2, 1, 1),
40 - AC97_SINGLE("High Pass Filter Enable", AC97_AD_TEST2, 12, 1, 1),
41 + AC97_SINGLE("V_REFOUT Enable", AC97_AD_MISC, AC97_AD_VREFD_SHIFT, 1, 1),
42 + AC97_SINGLE("High Pass Filter Enable", AC97_AD_TEST2,
43 + AC97_AD_HPFD_SHIFT, 1, 1),
44 AC97_SINGLE("Spread Front to Surround and Center/LFE", AC97_AD_MISC, 7, 1, 0),
45 {
46 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
47 Index: linux-2.6.23.17/sound/pci/cs5535audio/Makefile
48 ===================================================================
49 --- linux-2.6.23.17.orig/sound/pci/cs5535audio/Makefile
50 +++ linux-2.6.23.17/sound/pci/cs5535audio/Makefile
51 @@ -8,5 +8,9 @@ ifeq ($(CONFIG_PM),y)
52 snd-cs5535audio-objs += cs5535audio_pm.o
53 endif
54
55 +ifdef CONFIG_OLPC
56 +snd-cs5535audio-objs += cs5535audio_olpc.o
57 +endif
58 +
59 # Toplevel Module Dependency
60 obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o
61 Index: linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio.c
62 ===================================================================
63 --- linux-2.6.23.17.orig/sound/pci/cs5535audio/cs5535audio.c
64 +++ linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio.c
65 @@ -145,7 +145,7 @@ static unsigned short snd_cs5535audio_ac
66 return snd_cs5535audio_codec_read(cs5535au, reg);
67 }
68
69 -static int snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
70 +static int __devinit snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
71 {
72 struct snd_card *card = cs5535au->card;
73 struct snd_ac97_bus *pbus;
74 @@ -160,10 +160,14 @@ static int snd_cs5535audio_mixer(struct
75 return err;
76
77 memset(&ac97, 0, sizeof(ac97));
78 - ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM;
79 + ac97.scaps = AC97_SCAP_AUDIO | AC97_SCAP_SKIP_MODEM
80 + | AC97_SCAP_POWER_SAVE;
81 ac97.private_data = cs5535au;
82 ac97.pci = cs5535au->pci;
83
84 + /* olpc_prequirks is dummied out if not olpc */
85 + olpc_prequirks(card, &ac97);
86 +
87 if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
88 snd_printk(KERN_ERR "mixer failed\n");
89 return err;
90 @@ -171,6 +175,12 @@ static int snd_cs5535audio_mixer(struct
91
92 snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk);
93
94 + /* olpc_quirks is dummied out if not olpc */
95 + if (( err = olpc_quirks(card, cs5535au->ac97)) < 0) {
96 + snd_printk(KERN_ERR "olpc quirks failed\n");
97 + return err;
98 + }
99 +
100 return 0;
101 }
102
103 @@ -206,7 +216,6 @@ static void process_bm1_irq(struct cs553
104 static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id)
105 {
106 u16 acc_irq_stat;
107 - u8 bm_stat;
108 unsigned char count;
109 struct cs5535audio *cs5535au = dev_id;
110
111 @@ -217,7 +226,7 @@ static irqreturn_t snd_cs5535audio_inter
112
113 if (!acc_irq_stat)
114 return IRQ_NONE;
115 - for (count = 0; count < 10; count++) {
116 + for (count = 0; count < 4; count++) {
117 if (acc_irq_stat & (1 << count)) {
118 switch (count) {
119 case IRQ_STS:
120 @@ -232,26 +241,9 @@ static irqreturn_t snd_cs5535audio_inter
121 case BM1_IRQ_STS:
122 process_bm1_irq(cs5535au);
123 break;
124 - case BM2_IRQ_STS:
125 - bm_stat = cs_readb(cs5535au, ACC_BM2_STATUS);
126 - break;
127 - case BM3_IRQ_STS:
128 - bm_stat = cs_readb(cs5535au, ACC_BM3_STATUS);
129 - break;
130 - case BM4_IRQ_STS:
131 - bm_stat = cs_readb(cs5535au, ACC_BM4_STATUS);
132 - break;
133 - case BM5_IRQ_STS:
134 - bm_stat = cs_readb(cs5535au, ACC_BM5_STATUS);
135 - break;
136 - case BM6_IRQ_STS:
137 - bm_stat = cs_readb(cs5535au, ACC_BM6_STATUS);
138 - break;
139 - case BM7_IRQ_STS:
140 - bm_stat = cs_readb(cs5535au, ACC_BM7_STATUS);
141 - break;
142 default:
143 - snd_printk(KERN_ERR "Unexpected irq src\n");
144 + snd_printk(KERN_ERR "Unexpected irq src: "
145 + "0x%x\n", acc_irq_stat);
146 break;
147 }
148 }
149 Index: linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio.h
150 ===================================================================
151 --- linux-2.6.23.17.orig/sound/pci/cs5535audio/cs5535audio.h
152 +++ linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio.h
153 @@ -16,57 +16,28 @@
154 #define ACC_IRQ_STATUS 0x12
155 #define ACC_BM0_CMD 0x20
156 #define ACC_BM1_CMD 0x28
157 -#define ACC_BM2_CMD 0x30
158 -#define ACC_BM3_CMD 0x38
159 -#define ACC_BM4_CMD 0x40
160 -#define ACC_BM5_CMD 0x48
161 -#define ACC_BM6_CMD 0x50
162 -#define ACC_BM7_CMD 0x58
163 #define ACC_BM0_PRD 0x24
164 #define ACC_BM1_PRD 0x2C
165 -#define ACC_BM2_PRD 0x34
166 -#define ACC_BM3_PRD 0x3C
167 -#define ACC_BM4_PRD 0x44
168 -#define ACC_BM5_PRD 0x4C
169 -#define ACC_BM6_PRD 0x54
170 -#define ACC_BM7_PRD 0x5C
171 #define ACC_BM0_STATUS 0x21
172 #define ACC_BM1_STATUS 0x29
173 -#define ACC_BM2_STATUS 0x31
174 -#define ACC_BM3_STATUS 0x39
175 -#define ACC_BM4_STATUS 0x41
176 -#define ACC_BM5_STATUS 0x49
177 -#define ACC_BM6_STATUS 0x51
178 -#define ACC_BM7_STATUS 0x59
179 #define ACC_BM0_PNTR 0x60
180 #define ACC_BM1_PNTR 0x64
181 -#define ACC_BM2_PNTR 0x68
182 -#define ACC_BM3_PNTR 0x6C
183 -#define ACC_BM4_PNTR 0x70
184 -#define ACC_BM5_PNTR 0x74
185 -#define ACC_BM6_PNTR 0x78
186 -#define ACC_BM7_PNTR 0x7C
187 +
188 /* acc_codec bar0 reg bits */
189 /* ACC_IRQ_STATUS */
190 #define IRQ_STS 0
191 #define WU_IRQ_STS 1
192 #define BM0_IRQ_STS 2
193 #define BM1_IRQ_STS 3
194 -#define BM2_IRQ_STS 4
195 -#define BM3_IRQ_STS 5
196 -#define BM4_IRQ_STS 6
197 -#define BM5_IRQ_STS 7
198 -#define BM6_IRQ_STS 8
199 -#define BM7_IRQ_STS 9
200 /* ACC_BMX_STATUS */
201 #define EOP (1<<0)
202 #define BM_EOP_ERR (1<<1)
203 /* ACC_BMX_CTL */
204 -#define BM_CTL_EN 0x00000001
205 -#define BM_CTL_PAUSE 0x00000011
206 -#define BM_CTL_DIS 0x00000000
207 -#define BM_CTL_BYTE_ORD_LE 0x00000000
208 -#define BM_CTL_BYTE_ORD_BE 0x00000100
209 +#define BM_CTL_EN 0x01
210 +#define BM_CTL_PAUSE 0x03
211 +#define BM_CTL_DIS 0x00
212 +#define BM_CTL_BYTE_ORD_LE 0x00
213 +#define BM_CTL_BYTE_ORD_BE 0x04
214 /* cs5535 specific ac97 codec register defines */
215 #define CMD_MASK 0xFF00FFFF
216 #define CMD_NEW 0x00010000
217 @@ -106,8 +77,8 @@ struct cs5535audio_dma {
218 struct snd_pcm_substream *substream;
219 unsigned int buf_addr, buf_bytes;
220 unsigned int period_bytes, periods;
221 - int suspended;
222 u32 saved_prd;
223 + int pcm_open_flag;
224 };
225
226 struct cs5535audio {
227 @@ -123,8 +94,21 @@ struct cs5535audio {
228 struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS];
229 };
230
231 +#ifdef CONFIG_PM
232 int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state);
233 int snd_cs5535audio_resume(struct pci_dev *pci);
234 +#endif
235 +
236 +#ifdef CONFIG_OLPC
237 +void olpc_prequirks(struct snd_card *card, struct snd_ac97_template *ac97) __devinit;
238 +int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97) __devinit;
239 +int olpc_ai_enable(struct snd_ac97 *ac97, u8 val);
240 +#else
241 +#define olpc_prequirks(arg,arg2) do {} while (0)
242 +#define olpc_quirks(arg,arg2) (0)
243 +#define olpc_ai_enable(a, v) (0)
244 +#endif
245 +
246 int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535audio);
247
248 #endif /* __SOUND_CS5535AUDIO_H */
249 Index: linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio_pcm.c
250 ===================================================================
251 --- linux-2.6.23.17.orig/sound/pci/cs5535audio/cs5535audio_pcm.c
252 +++ linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio_pcm.c
253 @@ -164,6 +164,7 @@ static int cs5535audio_build_dma_packets
254 jmpprd_addr = cpu_to_le32(lastdesc->addr +
255 (sizeof(struct cs5535audio_dma_desc)*periods));
256
257 + dma->substream = substream;
258 dma->period_bytes = period_bytes;
259 dma->periods = periods;
260 spin_lock_irq(&cs5535au->reg_lock);
261 @@ -241,6 +242,7 @@ static void cs5535audio_clear_dma_packet
262 {
263 snd_dma_free_pages(&dma->desc_buf);
264 dma->desc_buf.area = NULL;
265 + dma->substream = NULL;
266 }
267
268 static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream,
269 @@ -260,6 +262,9 @@ static int snd_cs5535audio_hw_params(str
270 err = cs5535audio_build_dma_packets(cs5535au, dma, substream,
271 params_periods(hw_params),
272 params_period_bytes(hw_params));
273 + if (!err)
274 + dma->pcm_open_flag = 1;
275 +
276 return err;
277 }
278
279 @@ -268,6 +273,15 @@ static int snd_cs5535audio_hw_free(struc
280 struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
281 struct cs5535audio_dma *dma = substream->runtime->private_data;
282
283 + if (dma->pcm_open_flag) {
284 + if (substream == cs5535au->playback_substream)
285 + snd_ac97_update_power(cs5535au->ac97,
286 + AC97_PCM_FRONT_DAC_RATE, 0);
287 + else
288 + snd_ac97_update_power(cs5535au->ac97,
289 + AC97_PCM_LR_ADC_RATE, 0);
290 + dma->pcm_open_flag = 0;
291 + }
292 cs5535audio_clear_dma_packets(cs5535au, dma, substream);
293 return snd_pcm_lib_free_pages(substream);
294 }
295 @@ -298,14 +312,12 @@ static int snd_cs5535audio_trigger(struc
296 break;
297 case SNDRV_PCM_TRIGGER_RESUME:
298 dma->ops->enable_dma(cs5535au);
299 - dma->suspended = 0;
300 break;
301 case SNDRV_PCM_TRIGGER_STOP:
302 dma->ops->disable_dma(cs5535au);
303 break;
304 case SNDRV_PCM_TRIGGER_SUSPEND:
305 dma->ops->disable_dma(cs5535au);
306 - dma->suspended = 1;
307 break;
308 default:
309 snd_printk(KERN_ERR "unhandled trigger\n");
310 @@ -344,6 +356,7 @@ static int snd_cs5535audio_capture_open(
311 int err;
312 struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
313 struct snd_pcm_runtime *runtime = substream->runtime;
314 + struct snd_ac97 *ac97 = cs5535au->ac97;
315
316 runtime->hw = snd_cs5535audio_capture;
317 cs5535au->capture_substream = substream;
318 @@ -352,11 +365,29 @@ static int snd_cs5535audio_capture_open(
319 if ((err = snd_pcm_hw_constraint_integer(runtime,
320 SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
321 return err;
322 - return 0;
323 +
324 +#ifdef CONFIG_OLPC
325 + /* Disable Analog Input */
326 + olpc_ai_enable(ac97, 0);
327 + /* Enable V_ref bias while recording. */
328 + snd_ac97_update_bits(ac97, AC97_AD_MISC, 1<<AC97_AD_VREFD_SHIFT, 0);
329 +#endif
330 + return err;
331 }
332
333 static int snd_cs5535audio_capture_close(struct snd_pcm_substream *substream)
334 {
335 +#ifdef CONFIG_OLPC
336 + struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
337 + struct snd_ac97 *ac97 = cs5535au->ac97;
338 +
339 + /* Disable Analog Input */
340 + olpc_ai_enable(ac97, 0);
341 + /* Disable V_ref bias. */
342 + snd_ac97_update_bits(ac97, AC97_AD_MISC, 1<<AC97_AD_VREFD_SHIFT,
343 + 1<<AC97_AD_VREFD_SHIFT);
344 +#endif
345 +
346 return 0;
347 }
348
349 Index: linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio_pm.c
350 ===================================================================
351 --- linux-2.6.23.17.orig/sound/pci/cs5535audio/cs5535audio_pm.c
352 +++ linux-2.6.23.17/sound/pci/cs5535audio/cs5535audio_pm.c
353 @@ -64,18 +64,21 @@ int snd_cs5535audio_suspend(struct pci_d
354 int i;
355
356 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
357 + snd_pcm_suspend_all(cs5535au->pcm);
358 + snd_ac97_suspend(cs5535au->ac97);
359 for (i = 0; i < NUM_CS5535AUDIO_DMAS; i++) {
360 struct cs5535audio_dma *dma = &cs5535au->dmas[i];
361 - if (dma && dma->substream && !dma->suspended)
362 + if (dma && dma->substream)
363 dma->saved_prd = dma->ops->read_prd(cs5535au);
364 }
365 - snd_pcm_suspend_all(cs5535au->pcm);
366 - snd_ac97_suspend(cs5535au->ac97);
367 /* save important regs, then disable aclink in hw */
368 snd_cs5535audio_stop_hardware(cs5535au);
369
370 + if (pci_save_state(pci)) {
371 + printk(KERN_ERR "cs5535audio: pci_save_state failed!\n");
372 + return -EIO;
373 + }
374 pci_disable_device(pci);
375 - pci_save_state(pci);
376 pci_set_power_state(pci, pci_choose_state(pci, state));
377 return 0;
378 }
379 @@ -89,7 +92,12 @@ int snd_cs5535audio_resume(struct pci_de
380 int i;
381
382 pci_set_power_state(pci, PCI_D0);
383 - pci_restore_state(pci);
384 + if (pci_restore_state(pci) < 0) {
385 + printk(KERN_ERR "cs5535audio: pci_restore_state failed, "
386 + "disabling device\n");
387 + snd_card_disconnect(card);
388 + return -EIO;
389 + }
390 if (pci_enable_device(pci) < 0) {
391 printk(KERN_ERR "cs5535audio: pci_enable_device failed, "
392 "disabling device\n");
393 @@ -112,17 +120,17 @@ int snd_cs5535audio_resume(struct pci_de
394 if (!timeout)
395 snd_printk(KERN_ERR "Failure getting AC Link ready\n");
396
397 - /* we depend on ac97 to perform the codec power up */
398 - snd_ac97_resume(cs5535au->ac97);
399 /* set up rate regs, dma. actual initiation is done in trig */
400 for (i = 0; i < NUM_CS5535AUDIO_DMAS; i++) {
401 struct cs5535audio_dma *dma = &cs5535au->dmas[i];
402 - if (dma && dma->substream && dma->suspended) {
403 + if (dma && dma->substream) {
404 dma->substream->ops->prepare(dma->substream);
405 dma->ops->setup_prd(cs5535au, dma->saved_prd);
406 }
407 }
408 -
409 +
410 + /* we depend on ac97 to perform the codec power up */
411 + snd_ac97_resume(cs5535au->ac97);
412 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
413
414 return 0;
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