xref: /openbmc/linux/sound/mips/sgio2audio.c (revision c32d977b8157bf67cdf47729ce7dd054a26eb534)
1862c2c0aSThomas Bogendoerfer /*
2862c2c0aSThomas Bogendoerfer  *   Sound driver for Silicon Graphics O2 Workstations A/V board audio.
3862c2c0aSThomas Bogendoerfer  *
4862c2c0aSThomas Bogendoerfer  *   Copyright 2003 Vivien Chappelier <vivien.chappelier@linux-mips.org>
5862c2c0aSThomas Bogendoerfer  *   Copyright 2008 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
6862c2c0aSThomas Bogendoerfer  *   Mxier part taken from mace_audio.c:
7862c2c0aSThomas Bogendoerfer  *   Copyright 2007 Thorben Jändling <tj.trevelyan@gmail.com>
8862c2c0aSThomas Bogendoerfer  *
9862c2c0aSThomas Bogendoerfer  *   This program is free software; you can redistribute it and/or modify
10862c2c0aSThomas Bogendoerfer  *   it under the terms of the GNU General Public License as published by
11862c2c0aSThomas Bogendoerfer  *   the Free Software Foundation; either version 2 of the License, or
12862c2c0aSThomas Bogendoerfer  *   (at your option) any later version.
13862c2c0aSThomas Bogendoerfer  *
14862c2c0aSThomas Bogendoerfer  *   This program is distributed in the hope that it will be useful,
15862c2c0aSThomas Bogendoerfer  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
16862c2c0aSThomas Bogendoerfer  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17862c2c0aSThomas Bogendoerfer  *   GNU General Public License for more details.
18862c2c0aSThomas Bogendoerfer  *
19862c2c0aSThomas Bogendoerfer  *   You should have received a copy of the GNU General Public License
20862c2c0aSThomas Bogendoerfer  *   along with this program; if not, write to the Free Software
21862c2c0aSThomas Bogendoerfer  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22862c2c0aSThomas Bogendoerfer  *
23862c2c0aSThomas Bogendoerfer  */
24862c2c0aSThomas Bogendoerfer 
25862c2c0aSThomas Bogendoerfer #include <linux/init.h>
26862c2c0aSThomas Bogendoerfer #include <linux/delay.h>
27862c2c0aSThomas Bogendoerfer #include <linux/spinlock.h>
28862c2c0aSThomas Bogendoerfer #include <linux/gfp.h>
29862c2c0aSThomas Bogendoerfer #include <linux/interrupt.h>
30862c2c0aSThomas Bogendoerfer #include <linux/dma-mapping.h>
31862c2c0aSThomas Bogendoerfer #include <linux/platform_device.h>
32862c2c0aSThomas Bogendoerfer #include <linux/io.h>
33862c2c0aSThomas Bogendoerfer 
34862c2c0aSThomas Bogendoerfer #include <asm/ip32/ip32_ints.h>
35862c2c0aSThomas Bogendoerfer #include <asm/ip32/mace.h>
36862c2c0aSThomas Bogendoerfer 
37862c2c0aSThomas Bogendoerfer #include <sound/core.h>
38862c2c0aSThomas Bogendoerfer #include <sound/control.h>
39862c2c0aSThomas Bogendoerfer #include <sound/pcm.h>
40862c2c0aSThomas Bogendoerfer #define SNDRV_GET_ID
41862c2c0aSThomas Bogendoerfer #include <sound/initval.h>
42862c2c0aSThomas Bogendoerfer #include <sound/ad1843.h>
43862c2c0aSThomas Bogendoerfer 
44862c2c0aSThomas Bogendoerfer 
45862c2c0aSThomas Bogendoerfer MODULE_AUTHOR("Vivien Chappelier <vivien.chappelier@linux-mips.org>");
46862c2c0aSThomas Bogendoerfer MODULE_DESCRIPTION("SGI O2 Audio");
47862c2c0aSThomas Bogendoerfer MODULE_LICENSE("GPL");
48862c2c0aSThomas Bogendoerfer MODULE_SUPPORTED_DEVICE("{{Silicon Graphics, O2 Audio}}");
49862c2c0aSThomas Bogendoerfer 
50862c2c0aSThomas Bogendoerfer static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
51862c2c0aSThomas Bogendoerfer static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
52862c2c0aSThomas Bogendoerfer 
53862c2c0aSThomas Bogendoerfer module_param(index, int, 0444);
54862c2c0aSThomas Bogendoerfer MODULE_PARM_DESC(index, "Index value for SGI O2 soundcard.");
55862c2c0aSThomas Bogendoerfer module_param(id, charp, 0444);
56862c2c0aSThomas Bogendoerfer MODULE_PARM_DESC(id, "ID string for SGI O2 soundcard.");
57862c2c0aSThomas Bogendoerfer 
58862c2c0aSThomas Bogendoerfer 
59862c2c0aSThomas Bogendoerfer #define AUDIO_CONTROL_RESET              BIT(0) /* 1: reset audio interface */
60862c2c0aSThomas Bogendoerfer #define AUDIO_CONTROL_CODEC_PRESENT      BIT(1) /* 1: codec detected */
61862c2c0aSThomas Bogendoerfer 
62862c2c0aSThomas Bogendoerfer #define CODEC_CONTROL_WORD_SHIFT        0
63862c2c0aSThomas Bogendoerfer #define CODEC_CONTROL_READ              BIT(16)
64862c2c0aSThomas Bogendoerfer #define CODEC_CONTROL_ADDRESS_SHIFT     17
65862c2c0aSThomas Bogendoerfer 
66862c2c0aSThomas Bogendoerfer #define CHANNEL_CONTROL_RESET           BIT(10) /* 1: reset channel */
67862c2c0aSThomas Bogendoerfer #define CHANNEL_DMA_ENABLE              BIT(9)  /* 1: enable DMA transfer */
68862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_DISABLED  (0 << 5) /* interrupt disabled */
69862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_25        (1 << 5) /* int on buffer >25% full */
70862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_50        (2 << 5) /* int on buffer >50% full */
71862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_75        (3 << 5) /* int on buffer >75% full */
72862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_EMPTY     (4 << 5) /* int on buffer empty */
73862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_NOT_EMPTY (5 << 5) /* int on buffer !empty */
74862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_FULL      (6 << 5) /* int on buffer empty */
75862c2c0aSThomas Bogendoerfer #define CHANNEL_INT_THRESHOLD_NOT_FULL  (7 << 5) /* int on buffer !empty */
76862c2c0aSThomas Bogendoerfer 
77862c2c0aSThomas Bogendoerfer #define CHANNEL_RING_SHIFT              12
78862c2c0aSThomas Bogendoerfer #define CHANNEL_RING_SIZE               (1 << CHANNEL_RING_SHIFT)
79862c2c0aSThomas Bogendoerfer #define CHANNEL_RING_MASK               (CHANNEL_RING_SIZE - 1)
80862c2c0aSThomas Bogendoerfer 
81862c2c0aSThomas Bogendoerfer #define CHANNEL_LEFT_SHIFT 40
82862c2c0aSThomas Bogendoerfer #define CHANNEL_RIGHT_SHIFT 8
83862c2c0aSThomas Bogendoerfer 
84862c2c0aSThomas Bogendoerfer struct snd_sgio2audio_chan {
85862c2c0aSThomas Bogendoerfer 	int idx;
86862c2c0aSThomas Bogendoerfer 	struct snd_pcm_substream *substream;
87862c2c0aSThomas Bogendoerfer 	int pos;
88862c2c0aSThomas Bogendoerfer 	snd_pcm_uframes_t size;
89862c2c0aSThomas Bogendoerfer 	spinlock_t lock;
90862c2c0aSThomas Bogendoerfer };
91862c2c0aSThomas Bogendoerfer 
92862c2c0aSThomas Bogendoerfer /* definition of the chip-specific record */
93862c2c0aSThomas Bogendoerfer struct snd_sgio2audio {
94862c2c0aSThomas Bogendoerfer 	struct snd_card *card;
95862c2c0aSThomas Bogendoerfer 
96862c2c0aSThomas Bogendoerfer 	/* codec */
97862c2c0aSThomas Bogendoerfer 	struct snd_ad1843 ad1843;
98862c2c0aSThomas Bogendoerfer 	spinlock_t ad1843_lock;
99862c2c0aSThomas Bogendoerfer 
100862c2c0aSThomas Bogendoerfer 	/* channels */
101862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan channel[3];
102862c2c0aSThomas Bogendoerfer 
103862c2c0aSThomas Bogendoerfer 	/* resources */
104862c2c0aSThomas Bogendoerfer 	void *ring_base;
105862c2c0aSThomas Bogendoerfer 	dma_addr_t ring_base_dma;
106862c2c0aSThomas Bogendoerfer };
107862c2c0aSThomas Bogendoerfer 
108862c2c0aSThomas Bogendoerfer /* AD1843 access */
109862c2c0aSThomas Bogendoerfer 
110862c2c0aSThomas Bogendoerfer /*
111862c2c0aSThomas Bogendoerfer  * read_ad1843_reg returns the current contents of a 16 bit AD1843 register.
112862c2c0aSThomas Bogendoerfer  *
113862c2c0aSThomas Bogendoerfer  * Returns unsigned register value on success, -errno on failure.
114862c2c0aSThomas Bogendoerfer  */
115862c2c0aSThomas Bogendoerfer static int read_ad1843_reg(void *priv, int reg)
116862c2c0aSThomas Bogendoerfer {
117862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = priv;
118862c2c0aSThomas Bogendoerfer 	int val;
119862c2c0aSThomas Bogendoerfer 	unsigned long flags;
120862c2c0aSThomas Bogendoerfer 
121862c2c0aSThomas Bogendoerfer 	spin_lock_irqsave(&chip->ad1843_lock, flags);
122862c2c0aSThomas Bogendoerfer 
123862c2c0aSThomas Bogendoerfer 	writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) |
124862c2c0aSThomas Bogendoerfer 	       CODEC_CONTROL_READ, &mace->perif.audio.codec_control);
125862c2c0aSThomas Bogendoerfer 	wmb();
126862c2c0aSThomas Bogendoerfer 	val = readq(&mace->perif.audio.codec_control); /* flush bus */
127862c2c0aSThomas Bogendoerfer 	udelay(200);
128862c2c0aSThomas Bogendoerfer 
129862c2c0aSThomas Bogendoerfer 	val = readq(&mace->perif.audio.codec_read);
130862c2c0aSThomas Bogendoerfer 
131862c2c0aSThomas Bogendoerfer 	spin_unlock_irqrestore(&chip->ad1843_lock, flags);
132862c2c0aSThomas Bogendoerfer 	return val;
133862c2c0aSThomas Bogendoerfer }
134862c2c0aSThomas Bogendoerfer 
135862c2c0aSThomas Bogendoerfer /*
136862c2c0aSThomas Bogendoerfer  * write_ad1843_reg writes the specified value to a 16 bit AD1843 register.
137862c2c0aSThomas Bogendoerfer  */
138862c2c0aSThomas Bogendoerfer static int write_ad1843_reg(void *priv, int reg, int word)
139862c2c0aSThomas Bogendoerfer {
140862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = priv;
141862c2c0aSThomas Bogendoerfer 	int val;
142862c2c0aSThomas Bogendoerfer 	unsigned long flags;
143862c2c0aSThomas Bogendoerfer 
144862c2c0aSThomas Bogendoerfer 	spin_lock_irqsave(&chip->ad1843_lock, flags);
145862c2c0aSThomas Bogendoerfer 
146862c2c0aSThomas Bogendoerfer 	writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) |
147862c2c0aSThomas Bogendoerfer 	       (word << CODEC_CONTROL_WORD_SHIFT),
148862c2c0aSThomas Bogendoerfer 	       &mace->perif.audio.codec_control);
149862c2c0aSThomas Bogendoerfer 	wmb();
150862c2c0aSThomas Bogendoerfer 	val = readq(&mace->perif.audio.codec_control); /* flush bus */
151862c2c0aSThomas Bogendoerfer 	udelay(200);
152862c2c0aSThomas Bogendoerfer 
153862c2c0aSThomas Bogendoerfer 	spin_unlock_irqrestore(&chip->ad1843_lock, flags);
154862c2c0aSThomas Bogendoerfer 	return 0;
155862c2c0aSThomas Bogendoerfer }
156862c2c0aSThomas Bogendoerfer 
157862c2c0aSThomas Bogendoerfer static int sgio2audio_gain_info(struct snd_kcontrol *kcontrol,
158862c2c0aSThomas Bogendoerfer 			       struct snd_ctl_elem_info *uinfo)
159862c2c0aSThomas Bogendoerfer {
160862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
161862c2c0aSThomas Bogendoerfer 
162862c2c0aSThomas Bogendoerfer 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
163862c2c0aSThomas Bogendoerfer 	uinfo->count = 2;
164862c2c0aSThomas Bogendoerfer 	uinfo->value.integer.min = 0;
165862c2c0aSThomas Bogendoerfer 	uinfo->value.integer.max = ad1843_get_gain_max(&chip->ad1843,
166862c2c0aSThomas Bogendoerfer 					     (int)kcontrol->private_value);
167862c2c0aSThomas Bogendoerfer 	return 0;
168862c2c0aSThomas Bogendoerfer }
169862c2c0aSThomas Bogendoerfer 
170862c2c0aSThomas Bogendoerfer static int sgio2audio_gain_get(struct snd_kcontrol *kcontrol,
171862c2c0aSThomas Bogendoerfer 			       struct snd_ctl_elem_value *ucontrol)
172862c2c0aSThomas Bogendoerfer {
173862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
174862c2c0aSThomas Bogendoerfer 	int vol;
175862c2c0aSThomas Bogendoerfer 
176862c2c0aSThomas Bogendoerfer 	vol = ad1843_get_gain(&chip->ad1843, (int)kcontrol->private_value);
177862c2c0aSThomas Bogendoerfer 
178862c2c0aSThomas Bogendoerfer 	ucontrol->value.integer.value[0] = (vol >> 8) & 0xFF;
179862c2c0aSThomas Bogendoerfer 	ucontrol->value.integer.value[1] = vol & 0xFF;
180862c2c0aSThomas Bogendoerfer 
181862c2c0aSThomas Bogendoerfer 	return 0;
182862c2c0aSThomas Bogendoerfer }
183862c2c0aSThomas Bogendoerfer 
184862c2c0aSThomas Bogendoerfer static int sgio2audio_gain_put(struct snd_kcontrol *kcontrol,
185862c2c0aSThomas Bogendoerfer 			struct snd_ctl_elem_value *ucontrol)
186862c2c0aSThomas Bogendoerfer {
187862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
188862c2c0aSThomas Bogendoerfer 	int newvol, oldvol;
189862c2c0aSThomas Bogendoerfer 
190862c2c0aSThomas Bogendoerfer 	oldvol = ad1843_get_gain(&chip->ad1843, kcontrol->private_value);
191862c2c0aSThomas Bogendoerfer 	newvol = (ucontrol->value.integer.value[0] << 8) |
192862c2c0aSThomas Bogendoerfer 		ucontrol->value.integer.value[1];
193862c2c0aSThomas Bogendoerfer 
194862c2c0aSThomas Bogendoerfer 	newvol = ad1843_set_gain(&chip->ad1843, kcontrol->private_value,
195862c2c0aSThomas Bogendoerfer 		newvol);
196862c2c0aSThomas Bogendoerfer 
197862c2c0aSThomas Bogendoerfer 	return newvol != oldvol;
198862c2c0aSThomas Bogendoerfer }
199862c2c0aSThomas Bogendoerfer 
200862c2c0aSThomas Bogendoerfer static int sgio2audio_source_info(struct snd_kcontrol *kcontrol,
201862c2c0aSThomas Bogendoerfer 			       struct snd_ctl_elem_info *uinfo)
202862c2c0aSThomas Bogendoerfer {
203862c2c0aSThomas Bogendoerfer 	static const char *texts[3] = {
204862c2c0aSThomas Bogendoerfer 		"Cam Mic", "Mic", "Line"
205862c2c0aSThomas Bogendoerfer 	};
206862c2c0aSThomas Bogendoerfer 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
207862c2c0aSThomas Bogendoerfer 	uinfo->count = 1;
208862c2c0aSThomas Bogendoerfer 	uinfo->value.enumerated.items = 3;
209862c2c0aSThomas Bogendoerfer 	if (uinfo->value.enumerated.item >= 3)
210862c2c0aSThomas Bogendoerfer 		uinfo->value.enumerated.item = 1;
211862c2c0aSThomas Bogendoerfer 	strcpy(uinfo->value.enumerated.name,
212862c2c0aSThomas Bogendoerfer 	       texts[uinfo->value.enumerated.item]);
213862c2c0aSThomas Bogendoerfer 	return 0;
214862c2c0aSThomas Bogendoerfer }
215862c2c0aSThomas Bogendoerfer 
216862c2c0aSThomas Bogendoerfer static int sgio2audio_source_get(struct snd_kcontrol *kcontrol,
217862c2c0aSThomas Bogendoerfer 			       struct snd_ctl_elem_value *ucontrol)
218862c2c0aSThomas Bogendoerfer {
219862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
220862c2c0aSThomas Bogendoerfer 
221862c2c0aSThomas Bogendoerfer 	ucontrol->value.enumerated.item[0] = ad1843_get_recsrc(&chip->ad1843);
222862c2c0aSThomas Bogendoerfer 	return 0;
223862c2c0aSThomas Bogendoerfer }
224862c2c0aSThomas Bogendoerfer 
225862c2c0aSThomas Bogendoerfer static int sgio2audio_source_put(struct snd_kcontrol *kcontrol,
226862c2c0aSThomas Bogendoerfer 			struct snd_ctl_elem_value *ucontrol)
227862c2c0aSThomas Bogendoerfer {
228862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol);
229862c2c0aSThomas Bogendoerfer 	int newsrc, oldsrc;
230862c2c0aSThomas Bogendoerfer 
231862c2c0aSThomas Bogendoerfer 	oldsrc = ad1843_get_recsrc(&chip->ad1843);
232862c2c0aSThomas Bogendoerfer 	newsrc = ad1843_set_recsrc(&chip->ad1843,
233862c2c0aSThomas Bogendoerfer 				   ucontrol->value.enumerated.item[0]);
234862c2c0aSThomas Bogendoerfer 
235862c2c0aSThomas Bogendoerfer 	return newsrc != oldsrc;
236862c2c0aSThomas Bogendoerfer }
237862c2c0aSThomas Bogendoerfer 
238862c2c0aSThomas Bogendoerfer /* dac1/pcm0 mixer control */
239862c2c0aSThomas Bogendoerfer static struct snd_kcontrol_new sgio2audio_ctrl_pcm0 __devinitdata = {
240862c2c0aSThomas Bogendoerfer 	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
241862c2c0aSThomas Bogendoerfer 	.name           = "PCM Playback Volume",
242862c2c0aSThomas Bogendoerfer 	.index          = 0,
243862c2c0aSThomas Bogendoerfer 	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
244862c2c0aSThomas Bogendoerfer 	.private_value  = AD1843_GAIN_PCM_0,
245862c2c0aSThomas Bogendoerfer 	.info           = sgio2audio_gain_info,
246862c2c0aSThomas Bogendoerfer 	.get            = sgio2audio_gain_get,
247862c2c0aSThomas Bogendoerfer 	.put            = sgio2audio_gain_put,
248862c2c0aSThomas Bogendoerfer };
249862c2c0aSThomas Bogendoerfer 
250862c2c0aSThomas Bogendoerfer /* dac2/pcm1 mixer control */
251862c2c0aSThomas Bogendoerfer static struct snd_kcontrol_new sgio2audio_ctrl_pcm1 __devinitdata = {
252862c2c0aSThomas Bogendoerfer 	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
253862c2c0aSThomas Bogendoerfer 	.name           = "PCM Playback Volume",
254862c2c0aSThomas Bogendoerfer 	.index          = 1,
255862c2c0aSThomas Bogendoerfer 	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
256862c2c0aSThomas Bogendoerfer 	.private_value  = AD1843_GAIN_PCM_1,
257862c2c0aSThomas Bogendoerfer 	.info           = sgio2audio_gain_info,
258862c2c0aSThomas Bogendoerfer 	.get            = sgio2audio_gain_get,
259862c2c0aSThomas Bogendoerfer 	.put            = sgio2audio_gain_put,
260862c2c0aSThomas Bogendoerfer };
261862c2c0aSThomas Bogendoerfer 
262862c2c0aSThomas Bogendoerfer /* record level mixer control */
263862c2c0aSThomas Bogendoerfer static struct snd_kcontrol_new sgio2audio_ctrl_reclevel __devinitdata = {
264862c2c0aSThomas Bogendoerfer 	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
265862c2c0aSThomas Bogendoerfer 	.name           = "Capture Volume",
266862c2c0aSThomas Bogendoerfer 	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
267862c2c0aSThomas Bogendoerfer 	.private_value  = AD1843_GAIN_RECLEV,
268862c2c0aSThomas Bogendoerfer 	.info           = sgio2audio_gain_info,
269862c2c0aSThomas Bogendoerfer 	.get            = sgio2audio_gain_get,
270862c2c0aSThomas Bogendoerfer 	.put            = sgio2audio_gain_put,
271862c2c0aSThomas Bogendoerfer };
272862c2c0aSThomas Bogendoerfer 
273862c2c0aSThomas Bogendoerfer /* record level source control */
274862c2c0aSThomas Bogendoerfer static struct snd_kcontrol_new sgio2audio_ctrl_recsource __devinitdata = {
275862c2c0aSThomas Bogendoerfer 	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
276862c2c0aSThomas Bogendoerfer 	.name           = "Capture Source",
277862c2c0aSThomas Bogendoerfer 	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
278862c2c0aSThomas Bogendoerfer 	.info           = sgio2audio_source_info,
279862c2c0aSThomas Bogendoerfer 	.get            = sgio2audio_source_get,
280862c2c0aSThomas Bogendoerfer 	.put            = sgio2audio_source_put,
281862c2c0aSThomas Bogendoerfer };
282862c2c0aSThomas Bogendoerfer 
283862c2c0aSThomas Bogendoerfer /* line mixer control */
284862c2c0aSThomas Bogendoerfer static struct snd_kcontrol_new sgio2audio_ctrl_line __devinitdata = {
285862c2c0aSThomas Bogendoerfer 	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
286862c2c0aSThomas Bogendoerfer 	.name           = "Line Playback Volume",
287862c2c0aSThomas Bogendoerfer 	.index          = 0,
288862c2c0aSThomas Bogendoerfer 	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
289862c2c0aSThomas Bogendoerfer 	.private_value  = AD1843_GAIN_LINE,
290862c2c0aSThomas Bogendoerfer 	.info           = sgio2audio_gain_info,
291862c2c0aSThomas Bogendoerfer 	.get            = sgio2audio_gain_get,
292862c2c0aSThomas Bogendoerfer 	.put            = sgio2audio_gain_put,
293862c2c0aSThomas Bogendoerfer };
294862c2c0aSThomas Bogendoerfer 
295862c2c0aSThomas Bogendoerfer /* cd mixer control */
296862c2c0aSThomas Bogendoerfer static struct snd_kcontrol_new sgio2audio_ctrl_cd __devinitdata = {
297862c2c0aSThomas Bogendoerfer 	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
298862c2c0aSThomas Bogendoerfer 	.name           = "Line Playback Volume",
299862c2c0aSThomas Bogendoerfer 	.index          = 1,
300862c2c0aSThomas Bogendoerfer 	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
301862c2c0aSThomas Bogendoerfer 	.private_value  = AD1843_GAIN_LINE_2,
302862c2c0aSThomas Bogendoerfer 	.info           = sgio2audio_gain_info,
303862c2c0aSThomas Bogendoerfer 	.get            = sgio2audio_gain_get,
304862c2c0aSThomas Bogendoerfer 	.put            = sgio2audio_gain_put,
305862c2c0aSThomas Bogendoerfer };
306862c2c0aSThomas Bogendoerfer 
307862c2c0aSThomas Bogendoerfer /* mic mixer control */
308862c2c0aSThomas Bogendoerfer static struct snd_kcontrol_new sgio2audio_ctrl_mic __devinitdata = {
309862c2c0aSThomas Bogendoerfer 	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
310862c2c0aSThomas Bogendoerfer 	.name           = "Mic Playback Volume",
311862c2c0aSThomas Bogendoerfer 	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
312862c2c0aSThomas Bogendoerfer 	.private_value  = AD1843_GAIN_MIC,
313862c2c0aSThomas Bogendoerfer 	.info           = sgio2audio_gain_info,
314862c2c0aSThomas Bogendoerfer 	.get            = sgio2audio_gain_get,
315862c2c0aSThomas Bogendoerfer 	.put            = sgio2audio_gain_put,
316862c2c0aSThomas Bogendoerfer };
317862c2c0aSThomas Bogendoerfer 
318862c2c0aSThomas Bogendoerfer 
319862c2c0aSThomas Bogendoerfer static int __devinit snd_sgio2audio_new_mixer(struct snd_sgio2audio *chip)
320862c2c0aSThomas Bogendoerfer {
321862c2c0aSThomas Bogendoerfer 	int err;
322862c2c0aSThomas Bogendoerfer 
323862c2c0aSThomas Bogendoerfer 	err = snd_ctl_add(chip->card,
324862c2c0aSThomas Bogendoerfer 			  snd_ctl_new1(&sgio2audio_ctrl_pcm0, chip));
325862c2c0aSThomas Bogendoerfer 	if (err < 0)
326862c2c0aSThomas Bogendoerfer 		return err;
327862c2c0aSThomas Bogendoerfer 
328862c2c0aSThomas Bogendoerfer 	err = snd_ctl_add(chip->card,
329862c2c0aSThomas Bogendoerfer 			  snd_ctl_new1(&sgio2audio_ctrl_pcm1, chip));
330862c2c0aSThomas Bogendoerfer 	if (err < 0)
331862c2c0aSThomas Bogendoerfer 		return err;
332862c2c0aSThomas Bogendoerfer 
333862c2c0aSThomas Bogendoerfer 	err = snd_ctl_add(chip->card,
334862c2c0aSThomas Bogendoerfer 			  snd_ctl_new1(&sgio2audio_ctrl_reclevel, chip));
335862c2c0aSThomas Bogendoerfer 	if (err < 0)
336862c2c0aSThomas Bogendoerfer 		return err;
337862c2c0aSThomas Bogendoerfer 
338862c2c0aSThomas Bogendoerfer 	err = snd_ctl_add(chip->card,
339862c2c0aSThomas Bogendoerfer 			  snd_ctl_new1(&sgio2audio_ctrl_recsource, chip));
340862c2c0aSThomas Bogendoerfer 	if (err < 0)
341862c2c0aSThomas Bogendoerfer 		return err;
342862c2c0aSThomas Bogendoerfer 	err = snd_ctl_add(chip->card,
343862c2c0aSThomas Bogendoerfer 			  snd_ctl_new1(&sgio2audio_ctrl_line, chip));
344862c2c0aSThomas Bogendoerfer 	if (err < 0)
345862c2c0aSThomas Bogendoerfer 		return err;
346862c2c0aSThomas Bogendoerfer 
347862c2c0aSThomas Bogendoerfer 	err = snd_ctl_add(chip->card,
348862c2c0aSThomas Bogendoerfer 			  snd_ctl_new1(&sgio2audio_ctrl_cd, chip));
349862c2c0aSThomas Bogendoerfer 	if (err < 0)
350862c2c0aSThomas Bogendoerfer 		return err;
351862c2c0aSThomas Bogendoerfer 
352862c2c0aSThomas Bogendoerfer 	err = snd_ctl_add(chip->card,
353862c2c0aSThomas Bogendoerfer 			  snd_ctl_new1(&sgio2audio_ctrl_mic, chip));
354862c2c0aSThomas Bogendoerfer 	if (err < 0)
355862c2c0aSThomas Bogendoerfer 		return err;
356862c2c0aSThomas Bogendoerfer 
357862c2c0aSThomas Bogendoerfer 	return 0;
358862c2c0aSThomas Bogendoerfer }
359862c2c0aSThomas Bogendoerfer 
360862c2c0aSThomas Bogendoerfer /* low-level audio interface DMA */
361862c2c0aSThomas Bogendoerfer 
362862c2c0aSThomas Bogendoerfer /* get data out of bounce buffer, count must be a multiple of 32 */
363862c2c0aSThomas Bogendoerfer /* returns 1 if a period has elapsed */
364862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_dma_pull_frag(struct snd_sgio2audio *chip,
365862c2c0aSThomas Bogendoerfer 					unsigned int ch, unsigned int count)
366862c2c0aSThomas Bogendoerfer {
367862c2c0aSThomas Bogendoerfer 	int ret;
368862c2c0aSThomas Bogendoerfer 	unsigned long src_base, src_pos, dst_mask;
369862c2c0aSThomas Bogendoerfer 	unsigned char *dst_base;
370862c2c0aSThomas Bogendoerfer 	int dst_pos;
371862c2c0aSThomas Bogendoerfer 	u64 *src;
372862c2c0aSThomas Bogendoerfer 	s16 *dst;
373862c2c0aSThomas Bogendoerfer 	u64 x;
374862c2c0aSThomas Bogendoerfer 	unsigned long flags;
375862c2c0aSThomas Bogendoerfer 	struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime;
376862c2c0aSThomas Bogendoerfer 
377862c2c0aSThomas Bogendoerfer 	spin_lock_irqsave(&chip->channel[ch].lock, flags);
378862c2c0aSThomas Bogendoerfer 
379862c2c0aSThomas Bogendoerfer 	src_base = (unsigned long) chip->ring_base | (ch << CHANNEL_RING_SHIFT);
380862c2c0aSThomas Bogendoerfer 	src_pos = readq(&mace->perif.audio.chan[ch].read_ptr);
381862c2c0aSThomas Bogendoerfer 	dst_base = runtime->dma_area;
382862c2c0aSThomas Bogendoerfer 	dst_pos = chip->channel[ch].pos;
383862c2c0aSThomas Bogendoerfer 	dst_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1;
384862c2c0aSThomas Bogendoerfer 
385862c2c0aSThomas Bogendoerfer 	/* check if a period has elapsed */
386862c2c0aSThomas Bogendoerfer 	chip->channel[ch].size += (count >> 3); /* in frames */
387862c2c0aSThomas Bogendoerfer 	ret = chip->channel[ch].size >= runtime->period_size;
388862c2c0aSThomas Bogendoerfer 	chip->channel[ch].size %= runtime->period_size;
389862c2c0aSThomas Bogendoerfer 
390862c2c0aSThomas Bogendoerfer 	while (count) {
391862c2c0aSThomas Bogendoerfer 		src = (u64 *)(src_base + src_pos);
392862c2c0aSThomas Bogendoerfer 		dst = (s16 *)(dst_base + dst_pos);
393862c2c0aSThomas Bogendoerfer 
394862c2c0aSThomas Bogendoerfer 		x = *src;
395862c2c0aSThomas Bogendoerfer 		dst[0] = (x >> CHANNEL_LEFT_SHIFT) & 0xffff;
396862c2c0aSThomas Bogendoerfer 		dst[1] = (x >> CHANNEL_RIGHT_SHIFT) & 0xffff;
397862c2c0aSThomas Bogendoerfer 
398862c2c0aSThomas Bogendoerfer 		src_pos = (src_pos + sizeof(u64)) & CHANNEL_RING_MASK;
399862c2c0aSThomas Bogendoerfer 		dst_pos = (dst_pos + 2 * sizeof(s16)) & dst_mask;
400862c2c0aSThomas Bogendoerfer 		count -= sizeof(u64);
401862c2c0aSThomas Bogendoerfer 	}
402862c2c0aSThomas Bogendoerfer 
403862c2c0aSThomas Bogendoerfer 	writeq(src_pos, &mace->perif.audio.chan[ch].read_ptr); /* in bytes */
404862c2c0aSThomas Bogendoerfer 	chip->channel[ch].pos = dst_pos;
405862c2c0aSThomas Bogendoerfer 
406862c2c0aSThomas Bogendoerfer 	spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
407862c2c0aSThomas Bogendoerfer 	return ret;
408862c2c0aSThomas Bogendoerfer }
409862c2c0aSThomas Bogendoerfer 
410862c2c0aSThomas Bogendoerfer /* put some DMA data in bounce buffer, count must be a multiple of 32 */
411862c2c0aSThomas Bogendoerfer /* returns 1 if a period has elapsed */
412862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_dma_push_frag(struct snd_sgio2audio *chip,
413862c2c0aSThomas Bogendoerfer 					unsigned int ch, unsigned int count)
414862c2c0aSThomas Bogendoerfer {
415862c2c0aSThomas Bogendoerfer 	int ret;
416862c2c0aSThomas Bogendoerfer 	s64 l, r;
417862c2c0aSThomas Bogendoerfer 	unsigned long dst_base, dst_pos, src_mask;
418862c2c0aSThomas Bogendoerfer 	unsigned char *src_base;
419862c2c0aSThomas Bogendoerfer 	int src_pos;
420862c2c0aSThomas Bogendoerfer 	u64 *dst;
421862c2c0aSThomas Bogendoerfer 	s16 *src;
422862c2c0aSThomas Bogendoerfer 	unsigned long flags;
423862c2c0aSThomas Bogendoerfer 	struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime;
424862c2c0aSThomas Bogendoerfer 
425862c2c0aSThomas Bogendoerfer 	spin_lock_irqsave(&chip->channel[ch].lock, flags);
426862c2c0aSThomas Bogendoerfer 
427862c2c0aSThomas Bogendoerfer 	dst_base = (unsigned long)chip->ring_base | (ch << CHANNEL_RING_SHIFT);
428862c2c0aSThomas Bogendoerfer 	dst_pos = readq(&mace->perif.audio.chan[ch].write_ptr);
429862c2c0aSThomas Bogendoerfer 	src_base = runtime->dma_area;
430862c2c0aSThomas Bogendoerfer 	src_pos = chip->channel[ch].pos;
431862c2c0aSThomas Bogendoerfer 	src_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1;
432862c2c0aSThomas Bogendoerfer 
433862c2c0aSThomas Bogendoerfer 	/* check if a period has elapsed */
434862c2c0aSThomas Bogendoerfer 	chip->channel[ch].size += (count >> 3); /* in frames */
435862c2c0aSThomas Bogendoerfer 	ret = chip->channel[ch].size >= runtime->period_size;
436862c2c0aSThomas Bogendoerfer 	chip->channel[ch].size %= runtime->period_size;
437862c2c0aSThomas Bogendoerfer 
438862c2c0aSThomas Bogendoerfer 	while (count) {
439862c2c0aSThomas Bogendoerfer 		src = (s16 *)(src_base + src_pos);
440862c2c0aSThomas Bogendoerfer 		dst = (u64 *)(dst_base + dst_pos);
441862c2c0aSThomas Bogendoerfer 
442862c2c0aSThomas Bogendoerfer 		l = src[0]; /* sign extend */
443862c2c0aSThomas Bogendoerfer 		r = src[1]; /* sign extend */
444862c2c0aSThomas Bogendoerfer 
445862c2c0aSThomas Bogendoerfer 		*dst = ((l & 0x00ffffff) << CHANNEL_LEFT_SHIFT) |
446862c2c0aSThomas Bogendoerfer 			((r & 0x00ffffff) << CHANNEL_RIGHT_SHIFT);
447862c2c0aSThomas Bogendoerfer 
448862c2c0aSThomas Bogendoerfer 		dst_pos = (dst_pos + sizeof(u64)) & CHANNEL_RING_MASK;
449862c2c0aSThomas Bogendoerfer 		src_pos = (src_pos + 2 * sizeof(s16)) & src_mask;
450862c2c0aSThomas Bogendoerfer 		count -= sizeof(u64);
451862c2c0aSThomas Bogendoerfer 	}
452862c2c0aSThomas Bogendoerfer 
453862c2c0aSThomas Bogendoerfer 	writeq(dst_pos, &mace->perif.audio.chan[ch].write_ptr); /* in bytes */
454862c2c0aSThomas Bogendoerfer 	chip->channel[ch].pos = src_pos;
455862c2c0aSThomas Bogendoerfer 
456862c2c0aSThomas Bogendoerfer 	spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
457862c2c0aSThomas Bogendoerfer 	return ret;
458862c2c0aSThomas Bogendoerfer }
459862c2c0aSThomas Bogendoerfer 
460862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_dma_start(struct snd_pcm_substream *substream)
461862c2c0aSThomas Bogendoerfer {
462862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
463862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
464862c2c0aSThomas Bogendoerfer 	int ch = chan->idx;
465862c2c0aSThomas Bogendoerfer 
466862c2c0aSThomas Bogendoerfer 	/* reset DMA channel */
467862c2c0aSThomas Bogendoerfer 	writeq(CHANNEL_CONTROL_RESET, &mace->perif.audio.chan[ch].control);
468862c2c0aSThomas Bogendoerfer 	udelay(10);
469862c2c0aSThomas Bogendoerfer 	writeq(0, &mace->perif.audio.chan[ch].control);
470862c2c0aSThomas Bogendoerfer 
471862c2c0aSThomas Bogendoerfer 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
472862c2c0aSThomas Bogendoerfer 		/* push a full buffer */
473862c2c0aSThomas Bogendoerfer 		snd_sgio2audio_dma_push_frag(chip, ch, CHANNEL_RING_SIZE - 32);
474862c2c0aSThomas Bogendoerfer 	}
475862c2c0aSThomas Bogendoerfer 	/* set DMA to wake on 50% empty and enable interrupt */
476862c2c0aSThomas Bogendoerfer 	writeq(CHANNEL_DMA_ENABLE | CHANNEL_INT_THRESHOLD_50,
477862c2c0aSThomas Bogendoerfer 	       &mace->perif.audio.chan[ch].control);
478862c2c0aSThomas Bogendoerfer 	return 0;
479862c2c0aSThomas Bogendoerfer }
480862c2c0aSThomas Bogendoerfer 
481862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_dma_stop(struct snd_pcm_substream *substream)
482862c2c0aSThomas Bogendoerfer {
483862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
484862c2c0aSThomas Bogendoerfer 
485862c2c0aSThomas Bogendoerfer 	writeq(0, &mace->perif.audio.chan[chan->idx].control);
486862c2c0aSThomas Bogendoerfer 	return 0;
487862c2c0aSThomas Bogendoerfer }
488862c2c0aSThomas Bogendoerfer 
489862c2c0aSThomas Bogendoerfer static irqreturn_t snd_sgio2audio_dma_in_isr(int irq, void *dev_id)
490862c2c0aSThomas Bogendoerfer {
491862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan *chan = dev_id;
492862c2c0aSThomas Bogendoerfer 	struct snd_pcm_substream *substream;
493862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip;
494862c2c0aSThomas Bogendoerfer 	int count, ch;
495862c2c0aSThomas Bogendoerfer 
496862c2c0aSThomas Bogendoerfer 	substream = chan->substream;
497862c2c0aSThomas Bogendoerfer 	chip = snd_pcm_substream_chip(substream);
498862c2c0aSThomas Bogendoerfer 	ch = chan->idx;
499862c2c0aSThomas Bogendoerfer 
500862c2c0aSThomas Bogendoerfer 	/* empty the ring */
501862c2c0aSThomas Bogendoerfer 	count = CHANNEL_RING_SIZE -
502862c2c0aSThomas Bogendoerfer 		readq(&mace->perif.audio.chan[ch].depth) - 32;
503862c2c0aSThomas Bogendoerfer 	if (snd_sgio2audio_dma_pull_frag(chip, ch, count))
504862c2c0aSThomas Bogendoerfer 		snd_pcm_period_elapsed(substream);
505862c2c0aSThomas Bogendoerfer 
506862c2c0aSThomas Bogendoerfer 	return IRQ_HANDLED;
507862c2c0aSThomas Bogendoerfer }
508862c2c0aSThomas Bogendoerfer 
509862c2c0aSThomas Bogendoerfer static irqreturn_t snd_sgio2audio_dma_out_isr(int irq, void *dev_id)
510862c2c0aSThomas Bogendoerfer {
511862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan *chan = dev_id;
512862c2c0aSThomas Bogendoerfer 	struct snd_pcm_substream *substream;
513862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip;
514862c2c0aSThomas Bogendoerfer 	int count, ch;
515862c2c0aSThomas Bogendoerfer 
516862c2c0aSThomas Bogendoerfer 	substream = chan->substream;
517862c2c0aSThomas Bogendoerfer 	chip = snd_pcm_substream_chip(substream);
518862c2c0aSThomas Bogendoerfer 	ch = chan->idx;
519862c2c0aSThomas Bogendoerfer 	/* fill the ring */
520862c2c0aSThomas Bogendoerfer 	count = CHANNEL_RING_SIZE -
521862c2c0aSThomas Bogendoerfer 		readq(&mace->perif.audio.chan[ch].depth) - 32;
522862c2c0aSThomas Bogendoerfer 	if (snd_sgio2audio_dma_push_frag(chip, ch, count))
523862c2c0aSThomas Bogendoerfer 		snd_pcm_period_elapsed(substream);
524862c2c0aSThomas Bogendoerfer 
525862c2c0aSThomas Bogendoerfer 	return IRQ_HANDLED;
526862c2c0aSThomas Bogendoerfer }
527862c2c0aSThomas Bogendoerfer 
528862c2c0aSThomas Bogendoerfer static irqreturn_t snd_sgio2audio_error_isr(int irq, void *dev_id)
529862c2c0aSThomas Bogendoerfer {
530862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan *chan = dev_id;
531862c2c0aSThomas Bogendoerfer 	struct snd_pcm_substream *substream;
532862c2c0aSThomas Bogendoerfer 
533862c2c0aSThomas Bogendoerfer 	substream = chan->substream;
534862c2c0aSThomas Bogendoerfer 	snd_sgio2audio_dma_stop(substream);
535862c2c0aSThomas Bogendoerfer 	snd_sgio2audio_dma_start(substream);
536862c2c0aSThomas Bogendoerfer 	return IRQ_HANDLED;
537862c2c0aSThomas Bogendoerfer }
538862c2c0aSThomas Bogendoerfer 
539862c2c0aSThomas Bogendoerfer /* PCM part */
540862c2c0aSThomas Bogendoerfer /* PCM hardware definition */
541862c2c0aSThomas Bogendoerfer static struct snd_pcm_hardware snd_sgio2audio_pcm_hw = {
542862c2c0aSThomas Bogendoerfer 	.info = (SNDRV_PCM_INFO_MMAP |
543862c2c0aSThomas Bogendoerfer 		 SNDRV_PCM_INFO_MMAP_VALID |
544862c2c0aSThomas Bogendoerfer 		 SNDRV_PCM_INFO_INTERLEAVED |
545862c2c0aSThomas Bogendoerfer 		 SNDRV_PCM_INFO_BLOCK_TRANSFER),
546862c2c0aSThomas Bogendoerfer 	.formats =          SNDRV_PCM_FMTBIT_S16_BE,
547862c2c0aSThomas Bogendoerfer 	.rates =            SNDRV_PCM_RATE_8000_48000,
548862c2c0aSThomas Bogendoerfer 	.rate_min =         8000,
549862c2c0aSThomas Bogendoerfer 	.rate_max =         48000,
550862c2c0aSThomas Bogendoerfer 	.channels_min =     2,
551862c2c0aSThomas Bogendoerfer 	.channels_max =     2,
552862c2c0aSThomas Bogendoerfer 	.buffer_bytes_max = 65536,
553862c2c0aSThomas Bogendoerfer 	.period_bytes_min = 32768,
554862c2c0aSThomas Bogendoerfer 	.period_bytes_max = 65536,
555862c2c0aSThomas Bogendoerfer 	.periods_min =      1,
556862c2c0aSThomas Bogendoerfer 	.periods_max =      1024,
557862c2c0aSThomas Bogendoerfer };
558862c2c0aSThomas Bogendoerfer 
559862c2c0aSThomas Bogendoerfer /* PCM playback open callback */
560862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_playback1_open(struct snd_pcm_substream *substream)
561862c2c0aSThomas Bogendoerfer {
562862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
563862c2c0aSThomas Bogendoerfer 	struct snd_pcm_runtime *runtime = substream->runtime;
564862c2c0aSThomas Bogendoerfer 
565862c2c0aSThomas Bogendoerfer 	runtime->hw = snd_sgio2audio_pcm_hw;
566862c2c0aSThomas Bogendoerfer 	runtime->private_data = &chip->channel[1];
567862c2c0aSThomas Bogendoerfer 	return 0;
568862c2c0aSThomas Bogendoerfer }
569862c2c0aSThomas Bogendoerfer 
570862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_playback2_open(struct snd_pcm_substream *substream)
571862c2c0aSThomas Bogendoerfer {
572862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
573862c2c0aSThomas Bogendoerfer 	struct snd_pcm_runtime *runtime = substream->runtime;
574862c2c0aSThomas Bogendoerfer 
575862c2c0aSThomas Bogendoerfer 	runtime->hw = snd_sgio2audio_pcm_hw;
576862c2c0aSThomas Bogendoerfer 	runtime->private_data = &chip->channel[2];
577862c2c0aSThomas Bogendoerfer 	return 0;
578862c2c0aSThomas Bogendoerfer }
579862c2c0aSThomas Bogendoerfer 
580862c2c0aSThomas Bogendoerfer /* PCM capture open callback */
581862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_capture_open(struct snd_pcm_substream *substream)
582862c2c0aSThomas Bogendoerfer {
583862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
584862c2c0aSThomas Bogendoerfer 	struct snd_pcm_runtime *runtime = substream->runtime;
585862c2c0aSThomas Bogendoerfer 
586862c2c0aSThomas Bogendoerfer 	runtime->hw = snd_sgio2audio_pcm_hw;
587862c2c0aSThomas Bogendoerfer 	runtime->private_data = &chip->channel[0];
588862c2c0aSThomas Bogendoerfer 	return 0;
589862c2c0aSThomas Bogendoerfer }
590862c2c0aSThomas Bogendoerfer 
591862c2c0aSThomas Bogendoerfer /* PCM close callback */
592862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream)
593862c2c0aSThomas Bogendoerfer {
594862c2c0aSThomas Bogendoerfer 	struct snd_pcm_runtime *runtime = substream->runtime;
595862c2c0aSThomas Bogendoerfer 
596862c2c0aSThomas Bogendoerfer 	runtime->private_data = NULL;
597862c2c0aSThomas Bogendoerfer 	return 0;
598862c2c0aSThomas Bogendoerfer }
599862c2c0aSThomas Bogendoerfer 
600862c2c0aSThomas Bogendoerfer 
601862c2c0aSThomas Bogendoerfer /* hw_params callback */
602862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_pcm_hw_params(struct snd_pcm_substream *substream,
603862c2c0aSThomas Bogendoerfer 					struct snd_pcm_hw_params *hw_params)
604862c2c0aSThomas Bogendoerfer {
6056cedf869SClemens Ladisch 	return snd_pcm_lib_alloc_vmalloc_buffer(substream,
6066cedf869SClemens Ladisch 						params_buffer_bytes(hw_params));
607862c2c0aSThomas Bogendoerfer }
608862c2c0aSThomas Bogendoerfer 
609862c2c0aSThomas Bogendoerfer /* hw_free callback */
610862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_pcm_hw_free(struct snd_pcm_substream *substream)
611862c2c0aSThomas Bogendoerfer {
6126cedf869SClemens Ladisch 	return snd_pcm_lib_free_vmalloc_buffer(substream);
613862c2c0aSThomas Bogendoerfer }
614862c2c0aSThomas Bogendoerfer 
615862c2c0aSThomas Bogendoerfer /* prepare callback */
616862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_pcm_prepare(struct snd_pcm_substream *substream)
617862c2c0aSThomas Bogendoerfer {
618862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
619862c2c0aSThomas Bogendoerfer 	struct snd_pcm_runtime *runtime = substream->runtime;
620862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
621862c2c0aSThomas Bogendoerfer 	int ch = chan->idx;
622862c2c0aSThomas Bogendoerfer 	unsigned long flags;
623862c2c0aSThomas Bogendoerfer 
624862c2c0aSThomas Bogendoerfer 	spin_lock_irqsave(&chip->channel[ch].lock, flags);
625862c2c0aSThomas Bogendoerfer 
626862c2c0aSThomas Bogendoerfer 	/* Setup the pseudo-dma transfer pointers.  */
627862c2c0aSThomas Bogendoerfer 	chip->channel[ch].pos = 0;
628862c2c0aSThomas Bogendoerfer 	chip->channel[ch].size = 0;
629862c2c0aSThomas Bogendoerfer 	chip->channel[ch].substream = substream;
630862c2c0aSThomas Bogendoerfer 
631862c2c0aSThomas Bogendoerfer 	/* set AD1843 format */
632862c2c0aSThomas Bogendoerfer 	/* hardware format is always S16_LE */
633862c2c0aSThomas Bogendoerfer 	switch (substream->stream) {
634862c2c0aSThomas Bogendoerfer 	case SNDRV_PCM_STREAM_PLAYBACK:
635862c2c0aSThomas Bogendoerfer 		ad1843_setup_dac(&chip->ad1843,
636862c2c0aSThomas Bogendoerfer 				 ch - 1,
637862c2c0aSThomas Bogendoerfer 				 runtime->rate,
638862c2c0aSThomas Bogendoerfer 				 SNDRV_PCM_FORMAT_S16_LE,
639862c2c0aSThomas Bogendoerfer 				 runtime->channels);
640862c2c0aSThomas Bogendoerfer 		break;
641862c2c0aSThomas Bogendoerfer 	case SNDRV_PCM_STREAM_CAPTURE:
642862c2c0aSThomas Bogendoerfer 		ad1843_setup_adc(&chip->ad1843,
643862c2c0aSThomas Bogendoerfer 				 runtime->rate,
644862c2c0aSThomas Bogendoerfer 				 SNDRV_PCM_FORMAT_S16_LE,
645862c2c0aSThomas Bogendoerfer 				 runtime->channels);
646862c2c0aSThomas Bogendoerfer 		break;
647862c2c0aSThomas Bogendoerfer 	}
648862c2c0aSThomas Bogendoerfer 	spin_unlock_irqrestore(&chip->channel[ch].lock, flags);
649862c2c0aSThomas Bogendoerfer 	return 0;
650862c2c0aSThomas Bogendoerfer }
651862c2c0aSThomas Bogendoerfer 
652862c2c0aSThomas Bogendoerfer /* trigger callback */
653862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_pcm_trigger(struct snd_pcm_substream *substream,
654862c2c0aSThomas Bogendoerfer 				      int cmd)
655862c2c0aSThomas Bogendoerfer {
656862c2c0aSThomas Bogendoerfer 	switch (cmd) {
657862c2c0aSThomas Bogendoerfer 	case SNDRV_PCM_TRIGGER_START:
658862c2c0aSThomas Bogendoerfer 		/* start the PCM engine */
659862c2c0aSThomas Bogendoerfer 		snd_sgio2audio_dma_start(substream);
660862c2c0aSThomas Bogendoerfer 		break;
661862c2c0aSThomas Bogendoerfer 	case SNDRV_PCM_TRIGGER_STOP:
662862c2c0aSThomas Bogendoerfer 		/* stop the PCM engine */
663862c2c0aSThomas Bogendoerfer 		snd_sgio2audio_dma_stop(substream);
664862c2c0aSThomas Bogendoerfer 		break;
665862c2c0aSThomas Bogendoerfer 	default:
666862c2c0aSThomas Bogendoerfer 		return -EINVAL;
667862c2c0aSThomas Bogendoerfer 	}
668862c2c0aSThomas Bogendoerfer 	return 0;
669862c2c0aSThomas Bogendoerfer }
670862c2c0aSThomas Bogendoerfer 
671862c2c0aSThomas Bogendoerfer /* pointer callback */
672862c2c0aSThomas Bogendoerfer static snd_pcm_uframes_t
673862c2c0aSThomas Bogendoerfer snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream)
674862c2c0aSThomas Bogendoerfer {
675862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream);
676862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio_chan *chan = substream->runtime->private_data;
677862c2c0aSThomas Bogendoerfer 
678862c2c0aSThomas Bogendoerfer 	/* get the current hardware pointer */
679862c2c0aSThomas Bogendoerfer 	return bytes_to_frames(substream->runtime,
680862c2c0aSThomas Bogendoerfer 			       chip->channel[chan->idx].pos);
681862c2c0aSThomas Bogendoerfer }
682862c2c0aSThomas Bogendoerfer 
683862c2c0aSThomas Bogendoerfer /* operators */
684862c2c0aSThomas Bogendoerfer static struct snd_pcm_ops snd_sgio2audio_playback1_ops = {
685862c2c0aSThomas Bogendoerfer 	.open =        snd_sgio2audio_playback1_open,
686862c2c0aSThomas Bogendoerfer 	.close =       snd_sgio2audio_pcm_close,
687862c2c0aSThomas Bogendoerfer 	.ioctl =       snd_pcm_lib_ioctl,
688862c2c0aSThomas Bogendoerfer 	.hw_params =   snd_sgio2audio_pcm_hw_params,
689862c2c0aSThomas Bogendoerfer 	.hw_free =     snd_sgio2audio_pcm_hw_free,
690862c2c0aSThomas Bogendoerfer 	.prepare =     snd_sgio2audio_pcm_prepare,
691862c2c0aSThomas Bogendoerfer 	.trigger =     snd_sgio2audio_pcm_trigger,
692862c2c0aSThomas Bogendoerfer 	.pointer =     snd_sgio2audio_pcm_pointer,
6936cedf869SClemens Ladisch 	.page =        snd_pcm_lib_get_vmalloc_page,
694*c32d977bSTakashi Iwai 	.mmap =        snd_pcm_lib_mmap_vmalloc,
695862c2c0aSThomas Bogendoerfer };
696862c2c0aSThomas Bogendoerfer 
697862c2c0aSThomas Bogendoerfer static struct snd_pcm_ops snd_sgio2audio_playback2_ops = {
698862c2c0aSThomas Bogendoerfer 	.open =        snd_sgio2audio_playback2_open,
699862c2c0aSThomas Bogendoerfer 	.close =       snd_sgio2audio_pcm_close,
700862c2c0aSThomas Bogendoerfer 	.ioctl =       snd_pcm_lib_ioctl,
701862c2c0aSThomas Bogendoerfer 	.hw_params =   snd_sgio2audio_pcm_hw_params,
702862c2c0aSThomas Bogendoerfer 	.hw_free =     snd_sgio2audio_pcm_hw_free,
703862c2c0aSThomas Bogendoerfer 	.prepare =     snd_sgio2audio_pcm_prepare,
704862c2c0aSThomas Bogendoerfer 	.trigger =     snd_sgio2audio_pcm_trigger,
705862c2c0aSThomas Bogendoerfer 	.pointer =     snd_sgio2audio_pcm_pointer,
7066cedf869SClemens Ladisch 	.page =        snd_pcm_lib_get_vmalloc_page,
707*c32d977bSTakashi Iwai 	.mmap =        snd_pcm_lib_mmap_vmalloc,
708862c2c0aSThomas Bogendoerfer };
709862c2c0aSThomas Bogendoerfer 
710862c2c0aSThomas Bogendoerfer static struct snd_pcm_ops snd_sgio2audio_capture_ops = {
711862c2c0aSThomas Bogendoerfer 	.open =        snd_sgio2audio_capture_open,
712862c2c0aSThomas Bogendoerfer 	.close =       snd_sgio2audio_pcm_close,
713862c2c0aSThomas Bogendoerfer 	.ioctl =       snd_pcm_lib_ioctl,
714862c2c0aSThomas Bogendoerfer 	.hw_params =   snd_sgio2audio_pcm_hw_params,
715862c2c0aSThomas Bogendoerfer 	.hw_free =     snd_sgio2audio_pcm_hw_free,
716862c2c0aSThomas Bogendoerfer 	.prepare =     snd_sgio2audio_pcm_prepare,
717862c2c0aSThomas Bogendoerfer 	.trigger =     snd_sgio2audio_pcm_trigger,
718862c2c0aSThomas Bogendoerfer 	.pointer =     snd_sgio2audio_pcm_pointer,
7196cedf869SClemens Ladisch 	.page =        snd_pcm_lib_get_vmalloc_page,
720*c32d977bSTakashi Iwai 	.mmap =        snd_pcm_lib_mmap_vmalloc,
721862c2c0aSThomas Bogendoerfer };
722862c2c0aSThomas Bogendoerfer 
723862c2c0aSThomas Bogendoerfer /*
724862c2c0aSThomas Bogendoerfer  *  definitions of capture are omitted here...
725862c2c0aSThomas Bogendoerfer  */
726862c2c0aSThomas Bogendoerfer 
727862c2c0aSThomas Bogendoerfer /* create a pcm device */
728862c2c0aSThomas Bogendoerfer static int __devinit snd_sgio2audio_new_pcm(struct snd_sgio2audio *chip)
729862c2c0aSThomas Bogendoerfer {
730862c2c0aSThomas Bogendoerfer 	struct snd_pcm *pcm;
731862c2c0aSThomas Bogendoerfer 	int err;
732862c2c0aSThomas Bogendoerfer 
733862c2c0aSThomas Bogendoerfer 	/* create first pcm device with one outputs and one input */
734862c2c0aSThomas Bogendoerfer 	err = snd_pcm_new(chip->card, "SGI O2 Audio", 0, 1, 1, &pcm);
735862c2c0aSThomas Bogendoerfer 	if (err < 0)
736862c2c0aSThomas Bogendoerfer 		return err;
737862c2c0aSThomas Bogendoerfer 
738862c2c0aSThomas Bogendoerfer 	pcm->private_data = chip;
739862c2c0aSThomas Bogendoerfer 	strcpy(pcm->name, "SGI O2 DAC1");
740862c2c0aSThomas Bogendoerfer 
741862c2c0aSThomas Bogendoerfer 	/* set operators */
742862c2c0aSThomas Bogendoerfer 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
743862c2c0aSThomas Bogendoerfer 			&snd_sgio2audio_playback1_ops);
744862c2c0aSThomas Bogendoerfer 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
745862c2c0aSThomas Bogendoerfer 			&snd_sgio2audio_capture_ops);
746862c2c0aSThomas Bogendoerfer 
747862c2c0aSThomas Bogendoerfer 	/* create second  pcm device with one outputs and no input */
748862c2c0aSThomas Bogendoerfer 	err = snd_pcm_new(chip->card, "SGI O2 Audio", 1, 1, 0, &pcm);
749862c2c0aSThomas Bogendoerfer 	if (err < 0)
750862c2c0aSThomas Bogendoerfer 		return err;
751862c2c0aSThomas Bogendoerfer 
752862c2c0aSThomas Bogendoerfer 	pcm->private_data = chip;
753862c2c0aSThomas Bogendoerfer 	strcpy(pcm->name, "SGI O2 DAC2");
754862c2c0aSThomas Bogendoerfer 
755862c2c0aSThomas Bogendoerfer 	/* set operators */
756862c2c0aSThomas Bogendoerfer 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
757862c2c0aSThomas Bogendoerfer 			&snd_sgio2audio_playback2_ops);
758862c2c0aSThomas Bogendoerfer 
759862c2c0aSThomas Bogendoerfer 	return 0;
760862c2c0aSThomas Bogendoerfer }
761862c2c0aSThomas Bogendoerfer 
762862c2c0aSThomas Bogendoerfer static struct {
763862c2c0aSThomas Bogendoerfer 	int idx;
764862c2c0aSThomas Bogendoerfer 	int irq;
765862c2c0aSThomas Bogendoerfer 	irqreturn_t (*isr)(int, void *);
766862c2c0aSThomas Bogendoerfer 	const char *desc;
767862c2c0aSThomas Bogendoerfer } snd_sgio2_isr_table[] = {
768862c2c0aSThomas Bogendoerfer 	{
769862c2c0aSThomas Bogendoerfer 		.idx = 0,
770862c2c0aSThomas Bogendoerfer 		.irq = MACEISA_AUDIO1_DMAT_IRQ,
771862c2c0aSThomas Bogendoerfer 		.isr = snd_sgio2audio_dma_in_isr,
772862c2c0aSThomas Bogendoerfer 		.desc = "Capture DMA Channel 0"
773862c2c0aSThomas Bogendoerfer 	}, {
774862c2c0aSThomas Bogendoerfer 		.idx = 0,
775862c2c0aSThomas Bogendoerfer 		.irq = MACEISA_AUDIO1_OF_IRQ,
776862c2c0aSThomas Bogendoerfer 		.isr = snd_sgio2audio_error_isr,
777862c2c0aSThomas Bogendoerfer 		.desc = "Capture Overflow"
778862c2c0aSThomas Bogendoerfer 	}, {
779862c2c0aSThomas Bogendoerfer 		.idx = 1,
780862c2c0aSThomas Bogendoerfer 		.irq = MACEISA_AUDIO2_DMAT_IRQ,
781862c2c0aSThomas Bogendoerfer 		.isr = snd_sgio2audio_dma_out_isr,
782862c2c0aSThomas Bogendoerfer 		.desc = "Playback DMA Channel 1"
783862c2c0aSThomas Bogendoerfer 	}, {
784862c2c0aSThomas Bogendoerfer 		.idx = 1,
785862c2c0aSThomas Bogendoerfer 		.irq = MACEISA_AUDIO2_MERR_IRQ,
786862c2c0aSThomas Bogendoerfer 		.isr = snd_sgio2audio_error_isr,
787862c2c0aSThomas Bogendoerfer 		.desc = "Memory Error Channel 1"
788862c2c0aSThomas Bogendoerfer 	}, {
789862c2c0aSThomas Bogendoerfer 		.idx = 2,
790862c2c0aSThomas Bogendoerfer 		.irq = MACEISA_AUDIO3_DMAT_IRQ,
791862c2c0aSThomas Bogendoerfer 		.isr = snd_sgio2audio_dma_out_isr,
792862c2c0aSThomas Bogendoerfer 		.desc = "Playback DMA Channel 2"
793862c2c0aSThomas Bogendoerfer 	}, {
794862c2c0aSThomas Bogendoerfer 		.idx = 2,
795862c2c0aSThomas Bogendoerfer 		.irq = MACEISA_AUDIO3_MERR_IRQ,
796862c2c0aSThomas Bogendoerfer 		.isr = snd_sgio2audio_error_isr,
797862c2c0aSThomas Bogendoerfer 		.desc = "Memory Error Channel 2"
798862c2c0aSThomas Bogendoerfer 	}
799862c2c0aSThomas Bogendoerfer };
800862c2c0aSThomas Bogendoerfer 
801862c2c0aSThomas Bogendoerfer /* ALSA driver */
802862c2c0aSThomas Bogendoerfer 
803862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_free(struct snd_sgio2audio *chip)
804862c2c0aSThomas Bogendoerfer {
805862c2c0aSThomas Bogendoerfer 	int i;
806862c2c0aSThomas Bogendoerfer 
807862c2c0aSThomas Bogendoerfer 	/* reset interface */
808862c2c0aSThomas Bogendoerfer 	writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control);
809862c2c0aSThomas Bogendoerfer 	udelay(1);
810862c2c0aSThomas Bogendoerfer 	writeq(0, &mace->perif.audio.control);
811862c2c0aSThomas Bogendoerfer 
812862c2c0aSThomas Bogendoerfer 	/* release IRQ's */
813862c2c0aSThomas Bogendoerfer 	for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++)
814862c2c0aSThomas Bogendoerfer 		free_irq(snd_sgio2_isr_table[i].irq,
815862c2c0aSThomas Bogendoerfer 			 &chip->channel[snd_sgio2_isr_table[i].idx]);
816862c2c0aSThomas Bogendoerfer 
817862c2c0aSThomas Bogendoerfer 	dma_free_coherent(NULL, MACEISA_RINGBUFFERS_SIZE,
818862c2c0aSThomas Bogendoerfer 			  chip->ring_base, chip->ring_base_dma);
819862c2c0aSThomas Bogendoerfer 
820862c2c0aSThomas Bogendoerfer 	/* release card data */
821862c2c0aSThomas Bogendoerfer 	kfree(chip);
822862c2c0aSThomas Bogendoerfer 	return 0;
823862c2c0aSThomas Bogendoerfer }
824862c2c0aSThomas Bogendoerfer 
825862c2c0aSThomas Bogendoerfer static int snd_sgio2audio_dev_free(struct snd_device *device)
826862c2c0aSThomas Bogendoerfer {
827862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip = device->device_data;
828862c2c0aSThomas Bogendoerfer 
829862c2c0aSThomas Bogendoerfer 	return snd_sgio2audio_free(chip);
830862c2c0aSThomas Bogendoerfer }
831862c2c0aSThomas Bogendoerfer 
832862c2c0aSThomas Bogendoerfer static struct snd_device_ops ops = {
833862c2c0aSThomas Bogendoerfer 	.dev_free = snd_sgio2audio_dev_free,
834862c2c0aSThomas Bogendoerfer };
835862c2c0aSThomas Bogendoerfer 
836862c2c0aSThomas Bogendoerfer static int __devinit snd_sgio2audio_create(struct snd_card *card,
837862c2c0aSThomas Bogendoerfer 					   struct snd_sgio2audio **rchip)
838862c2c0aSThomas Bogendoerfer {
839862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip;
840862c2c0aSThomas Bogendoerfer 	int i, err;
841862c2c0aSThomas Bogendoerfer 
842862c2c0aSThomas Bogendoerfer 	*rchip = NULL;
843862c2c0aSThomas Bogendoerfer 
844862c2c0aSThomas Bogendoerfer 	/* check if a codec is attached to the interface */
845862c2c0aSThomas Bogendoerfer 	/* (Audio or Audio/Video board present) */
846862c2c0aSThomas Bogendoerfer 	if (!(readq(&mace->perif.audio.control) & AUDIO_CONTROL_CODEC_PRESENT))
847862c2c0aSThomas Bogendoerfer 		return -ENOENT;
848862c2c0aSThomas Bogendoerfer 
849862c2c0aSThomas Bogendoerfer 	chip = kzalloc(sizeof(struct snd_sgio2audio), GFP_KERNEL);
850862c2c0aSThomas Bogendoerfer 	if (chip == NULL)
851862c2c0aSThomas Bogendoerfer 		return -ENOMEM;
852862c2c0aSThomas Bogendoerfer 
853862c2c0aSThomas Bogendoerfer 	chip->card = card;
854862c2c0aSThomas Bogendoerfer 
855862c2c0aSThomas Bogendoerfer 	chip->ring_base = dma_alloc_coherent(NULL, MACEISA_RINGBUFFERS_SIZE,
856862c2c0aSThomas Bogendoerfer 					     &chip->ring_base_dma, GFP_USER);
857862c2c0aSThomas Bogendoerfer 	if (chip->ring_base == NULL) {
858862c2c0aSThomas Bogendoerfer 		printk(KERN_ERR
859862c2c0aSThomas Bogendoerfer 		       "sgio2audio: could not allocate ring buffers\n");
860862c2c0aSThomas Bogendoerfer 		kfree(chip);
861862c2c0aSThomas Bogendoerfer 		return -ENOMEM;
862862c2c0aSThomas Bogendoerfer 	}
863862c2c0aSThomas Bogendoerfer 
864862c2c0aSThomas Bogendoerfer 	spin_lock_init(&chip->ad1843_lock);
865862c2c0aSThomas Bogendoerfer 
866862c2c0aSThomas Bogendoerfer 	/* initialize channels */
867862c2c0aSThomas Bogendoerfer 	for (i = 0; i < 3; i++) {
868862c2c0aSThomas Bogendoerfer 		spin_lock_init(&chip->channel[i].lock);
869862c2c0aSThomas Bogendoerfer 		chip->channel[i].idx = i;
870862c2c0aSThomas Bogendoerfer 	}
871862c2c0aSThomas Bogendoerfer 
872862c2c0aSThomas Bogendoerfer 	/* allocate IRQs */
873862c2c0aSThomas Bogendoerfer 	for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) {
874862c2c0aSThomas Bogendoerfer 		if (request_irq(snd_sgio2_isr_table[i].irq,
875862c2c0aSThomas Bogendoerfer 				snd_sgio2_isr_table[i].isr,
876862c2c0aSThomas Bogendoerfer 				0,
877862c2c0aSThomas Bogendoerfer 				snd_sgio2_isr_table[i].desc,
878862c2c0aSThomas Bogendoerfer 				&chip->channel[snd_sgio2_isr_table[i].idx])) {
879862c2c0aSThomas Bogendoerfer 			snd_sgio2audio_free(chip);
880862c2c0aSThomas Bogendoerfer 			printk(KERN_ERR "sgio2audio: cannot allocate irq %d\n",
881862c2c0aSThomas Bogendoerfer 			       snd_sgio2_isr_table[i].irq);
882862c2c0aSThomas Bogendoerfer 			return -EBUSY;
883862c2c0aSThomas Bogendoerfer 		}
884862c2c0aSThomas Bogendoerfer 	}
885862c2c0aSThomas Bogendoerfer 
886862c2c0aSThomas Bogendoerfer 	/* reset the interface */
887862c2c0aSThomas Bogendoerfer 	writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control);
888862c2c0aSThomas Bogendoerfer 	udelay(1);
889862c2c0aSThomas Bogendoerfer 	writeq(0, &mace->perif.audio.control);
890862c2c0aSThomas Bogendoerfer 	msleep_interruptible(1); /* give time to recover */
891862c2c0aSThomas Bogendoerfer 
892862c2c0aSThomas Bogendoerfer 	/* set ring base */
893862c2c0aSThomas Bogendoerfer 	writeq(chip->ring_base_dma, &mace->perif.ctrl.ringbase);
894862c2c0aSThomas Bogendoerfer 
895862c2c0aSThomas Bogendoerfer 	/* attach the AD1843 codec */
896862c2c0aSThomas Bogendoerfer 	chip->ad1843.read = read_ad1843_reg;
897862c2c0aSThomas Bogendoerfer 	chip->ad1843.write = write_ad1843_reg;
898862c2c0aSThomas Bogendoerfer 	chip->ad1843.chip = chip;
899862c2c0aSThomas Bogendoerfer 
900862c2c0aSThomas Bogendoerfer 	/* initialize the AD1843 codec */
901862c2c0aSThomas Bogendoerfer 	err = ad1843_init(&chip->ad1843);
902862c2c0aSThomas Bogendoerfer 	if (err < 0) {
903862c2c0aSThomas Bogendoerfer 		snd_sgio2audio_free(chip);
904862c2c0aSThomas Bogendoerfer 		return err;
905862c2c0aSThomas Bogendoerfer 	}
906862c2c0aSThomas Bogendoerfer 
907862c2c0aSThomas Bogendoerfer 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
908862c2c0aSThomas Bogendoerfer 	if (err < 0) {
909862c2c0aSThomas Bogendoerfer 		snd_sgio2audio_free(chip);
910862c2c0aSThomas Bogendoerfer 		return err;
911862c2c0aSThomas Bogendoerfer 	}
912862c2c0aSThomas Bogendoerfer 	*rchip = chip;
913862c2c0aSThomas Bogendoerfer 	return 0;
914862c2c0aSThomas Bogendoerfer }
915862c2c0aSThomas Bogendoerfer 
916862c2c0aSThomas Bogendoerfer static int __devinit snd_sgio2audio_probe(struct platform_device *pdev)
917862c2c0aSThomas Bogendoerfer {
918862c2c0aSThomas Bogendoerfer 	struct snd_card *card;
919862c2c0aSThomas Bogendoerfer 	struct snd_sgio2audio *chip;
920862c2c0aSThomas Bogendoerfer 	int err;
921862c2c0aSThomas Bogendoerfer 
922bd7dd77cSTakashi Iwai 	err = snd_card_create(index, id, THIS_MODULE, 0, &card);
923bd7dd77cSTakashi Iwai 	if (err < 0)
924bd7dd77cSTakashi Iwai 		return err;
925862c2c0aSThomas Bogendoerfer 
926862c2c0aSThomas Bogendoerfer 	err = snd_sgio2audio_create(card, &chip);
927862c2c0aSThomas Bogendoerfer 	if (err < 0) {
928862c2c0aSThomas Bogendoerfer 		snd_card_free(card);
929862c2c0aSThomas Bogendoerfer 		return err;
930862c2c0aSThomas Bogendoerfer 	}
931862c2c0aSThomas Bogendoerfer 	snd_card_set_dev(card, &pdev->dev);
932862c2c0aSThomas Bogendoerfer 
933862c2c0aSThomas Bogendoerfer 	err = snd_sgio2audio_new_pcm(chip);
934862c2c0aSThomas Bogendoerfer 	if (err < 0) {
935862c2c0aSThomas Bogendoerfer 		snd_card_free(card);
936862c2c0aSThomas Bogendoerfer 		return err;
937862c2c0aSThomas Bogendoerfer 	}
938862c2c0aSThomas Bogendoerfer 	err = snd_sgio2audio_new_mixer(chip);
939862c2c0aSThomas Bogendoerfer 	if (err < 0) {
940862c2c0aSThomas Bogendoerfer 		snd_card_free(card);
941862c2c0aSThomas Bogendoerfer 		return err;
942862c2c0aSThomas Bogendoerfer 	}
943862c2c0aSThomas Bogendoerfer 
944862c2c0aSThomas Bogendoerfer 	strcpy(card->driver, "SGI O2 Audio");
945862c2c0aSThomas Bogendoerfer 	strcpy(card->shortname, "SGI O2 Audio");
946862c2c0aSThomas Bogendoerfer 	sprintf(card->longname, "%s irq %i-%i",
947862c2c0aSThomas Bogendoerfer 		card->shortname,
948862c2c0aSThomas Bogendoerfer 		MACEISA_AUDIO1_DMAT_IRQ,
949862c2c0aSThomas Bogendoerfer 		MACEISA_AUDIO3_MERR_IRQ);
950862c2c0aSThomas Bogendoerfer 
951862c2c0aSThomas Bogendoerfer 	err = snd_card_register(card);
952862c2c0aSThomas Bogendoerfer 	if (err < 0) {
953862c2c0aSThomas Bogendoerfer 		snd_card_free(card);
954862c2c0aSThomas Bogendoerfer 		return err;
955862c2c0aSThomas Bogendoerfer 	}
956862c2c0aSThomas Bogendoerfer 	platform_set_drvdata(pdev, card);
957862c2c0aSThomas Bogendoerfer 	return 0;
958862c2c0aSThomas Bogendoerfer }
959862c2c0aSThomas Bogendoerfer 
9602f229a31STakashi Iwai static int __devexit snd_sgio2audio_remove(struct platform_device *pdev)
961862c2c0aSThomas Bogendoerfer {
962862c2c0aSThomas Bogendoerfer 	struct snd_card *card = platform_get_drvdata(pdev);
963862c2c0aSThomas Bogendoerfer 
964862c2c0aSThomas Bogendoerfer 	snd_card_free(card);
965862c2c0aSThomas Bogendoerfer 	platform_set_drvdata(pdev, NULL);
966862c2c0aSThomas Bogendoerfer 	return 0;
967862c2c0aSThomas Bogendoerfer }
968862c2c0aSThomas Bogendoerfer 
969862c2c0aSThomas Bogendoerfer static struct platform_driver sgio2audio_driver = {
970862c2c0aSThomas Bogendoerfer 	.probe	= snd_sgio2audio_probe,
971862c2c0aSThomas Bogendoerfer 	.remove	= __devexit_p(snd_sgio2audio_remove),
972862c2c0aSThomas Bogendoerfer 	.driver = {
973862c2c0aSThomas Bogendoerfer 		.name	= "sgio2audio",
974862c2c0aSThomas Bogendoerfer 		.owner	= THIS_MODULE,
975862c2c0aSThomas Bogendoerfer 	}
976862c2c0aSThomas Bogendoerfer };
977862c2c0aSThomas Bogendoerfer 
978862c2c0aSThomas Bogendoerfer static int __init alsa_card_sgio2audio_init(void)
979862c2c0aSThomas Bogendoerfer {
980862c2c0aSThomas Bogendoerfer 	return platform_driver_register(&sgio2audio_driver);
981862c2c0aSThomas Bogendoerfer }
982862c2c0aSThomas Bogendoerfer 
983862c2c0aSThomas Bogendoerfer static void __exit alsa_card_sgio2audio_exit(void)
984862c2c0aSThomas Bogendoerfer {
985862c2c0aSThomas Bogendoerfer 	platform_driver_unregister(&sgio2audio_driver);
986862c2c0aSThomas Bogendoerfer }
987862c2c0aSThomas Bogendoerfer 
988862c2c0aSThomas Bogendoerfer module_init(alsa_card_sgio2audio_init)
989862c2c0aSThomas Bogendoerfer module_exit(alsa_card_sgio2audio_exit)
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