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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/pcmcia/pdaudiocf/pdaudiocf_irq.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'sound/pcmcia/pdaudiocf/pdaudiocf_irq.c')
-rw-r--r--sound/pcmcia/pdaudiocf/pdaudiocf_irq.c325
1 files changed, 325 insertions, 0 deletions
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c b/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c
new file mode 100644
index 000000000000..255b63444b5d
--- /dev/null
+++ b/sound/pcmcia/pdaudiocf/pdaudiocf_irq.c
@@ -0,0 +1,325 @@
1/*
2 * Driver for Sound Core PDAudioCF soundcard
3 *
4 * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21#include <sound/driver.h>
22#include <sound/core.h>
23#include "pdaudiocf.h"
24#include <sound/initval.h>
25
26/*
27 *
28 */
29irqreturn_t pdacf_interrupt(int irq, void *dev, struct pt_regs *regs)
30{
31 pdacf_t *chip = dev;
32 unsigned short stat;
33
34 if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|
35 PDAUDIOCF_STAT_IS_CONFIGURED|
36 PDAUDIOCF_STAT_IS_SUSPENDED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
37 return IRQ_HANDLED; /* IRQ_NONE here? */
38
39 stat = inw(chip->port + PDAUDIOCF_REG_ISR);
40 if (stat & (PDAUDIOCF_IRQLVL|PDAUDIOCF_IRQOVR)) {
41 if (stat & PDAUDIOCF_IRQOVR) /* should never happen */
42 snd_printk(KERN_ERR "PDAUDIOCF SRAM buffer overrun detected!\n");
43 if (chip->pcm_substream)
44 tasklet_hi_schedule(&chip->tq);
45 if (!(stat & PDAUDIOCF_IRQAKM))
46 stat |= PDAUDIOCF_IRQAKM; /* check rate */
47 }
48 if (regs != NULL)
49 snd_ak4117_check_rate_and_errors(chip->ak4117, 0);
50 return IRQ_HANDLED;
51}
52
53static inline void pdacf_transfer_mono16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
54{
55 while (size-- > 0) {
56 *dst++ = inw(rdp_port) ^ xor;
57 inw(rdp_port);
58 }
59}
60
61static inline void pdacf_transfer_mono32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
62{
63 register u16 val1, val2;
64
65 while (size-- > 0) {
66 val1 = inw(rdp_port);
67 val2 = inw(rdp_port);
68 inw(rdp_port);
69 *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
70 }
71}
72
73static inline void pdacf_transfer_stereo16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
74{
75 while (size-- > 0) {
76 *dst++ = inw(rdp_port) ^ xor;
77 *dst++ = inw(rdp_port) ^ xor;
78 }
79}
80
81static inline void pdacf_transfer_stereo32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
82{
83 register u16 val1, val2, val3;
84
85 while (size-- > 0) {
86 val1 = inw(rdp_port);
87 val2 = inw(rdp_port);
88 val3 = inw(rdp_port);
89 *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
90 *dst++ = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
91 }
92}
93
94static inline void pdacf_transfer_mono16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
95{
96 while (size-- > 0) {
97 *dst++ = swab16(inw(rdp_port) ^ xor);
98 inw(rdp_port);
99 }
100}
101
102static inline void pdacf_transfer_mono32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
103{
104 register u16 val1, val2;
105
106 while (size-- > 0) {
107 val1 = inw(rdp_port);
108 val2 = inw(rdp_port);
109 inw(rdp_port);
110 *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor);
111 }
112}
113
114static inline void pdacf_transfer_stereo16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
115{
116 while (size-- > 0) {
117 *dst++ = swab16(inw(rdp_port) ^ xor);
118 *dst++ = swab16(inw(rdp_port) ^ xor);
119 }
120}
121
122static inline void pdacf_transfer_stereo32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
123{
124 register u16 val1, val2, val3;
125
126 while (size-- > 0) {
127 val1 = inw(rdp_port);
128 val2 = inw(rdp_port);
129 val3 = inw(rdp_port);
130 *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor);
131 *dst++ = swab32((((u32)val3 << 16) | (val2 & 0xff00)) ^ xor);
132 }
133}
134
135static inline void pdacf_transfer_mono24le(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
136{
137 register u16 val1, val2;
138 register u32 xval1;
139
140 while (size-- > 0) {
141 val1 = inw(rdp_port);
142 val2 = inw(rdp_port);
143 inw(rdp_port);
144 xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor;
145 *dst++ = (u8)(xval1 >> 8);
146 *dst++ = (u8)(xval1 >> 16);
147 *dst++ = (u8)(xval1 >> 24);
148 }
149}
150
151static inline void pdacf_transfer_mono24be(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
152{
153 register u16 val1, val2;
154 register u32 xval1;
155
156 while (size-- > 0) {
157 val1 = inw(rdp_port);
158 val2 = inw(rdp_port);
159 inw(rdp_port);
160 xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor;
161 *dst++ = (u8)(xval1 >> 24);
162 *dst++ = (u8)(xval1 >> 16);
163 *dst++ = (u8)(xval1 >> 8);
164 }
165}
166
167static inline void pdacf_transfer_stereo24le(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
168{
169 register u16 val1, val2, val3;
170 register u32 xval1, xval2;
171
172 while (size-- > 0) {
173 val1 = inw(rdp_port);
174 val2 = inw(rdp_port);
175 val3 = inw(rdp_port);
176 xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
177 xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
178 *dst++ = (u8)(xval1 >> 8);
179 *dst++ = (u8)(xval1 >> 16);
180 *dst++ = (u8)(xval1 >> 24);
181 *dst++ = (u8)(xval2 >> 8);
182 *dst++ = (u8)(xval2 >> 16);
183 *dst++ = (u8)(xval2 >> 24);
184 }
185}
186
187static inline void pdacf_transfer_stereo24be(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
188{
189 register u16 val1, val2, val3;
190 register u32 xval1, xval2;
191
192 while (size-- > 0) {
193 val1 = inw(rdp_port);
194 val2 = inw(rdp_port);
195 val3 = inw(rdp_port);
196 xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
197 xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
198 *dst++ = (u8)(xval1 >> 24);
199 *dst++ = (u8)(xval1 >> 16);
200 *dst++ = (u8)(xval1 >> 8);
201 *dst++ = (u8)(xval2 >> 24);
202 *dst++ = (u8)(xval2 >> 16);
203 *dst++ = (u8)(xval2 >> 8);
204 }
205}
206
207static void pdacf_transfer(pdacf_t *chip, unsigned int size, unsigned int off)
208{
209 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
210 unsigned int xor = chip->pcm_xor;
211
212 if (chip->pcm_sample == 3) {
213 if (chip->pcm_little) {
214 if (chip->pcm_channels == 1) {
215 pdacf_transfer_mono24le((char *)chip->pcm_area + (off * 3), xor, size, rdp_port);
216 } else {
217 pdacf_transfer_stereo24le((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
218 }
219 } else {
220 if (chip->pcm_channels == 1) {
221 pdacf_transfer_mono24be((char *)chip->pcm_area + (off * 3), xor, size, rdp_port);
222 } else {
223 pdacf_transfer_stereo24be((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
224 }
225 }
226 return;
227 }
228 if (chip->pcm_swab == 0) {
229 if (chip->pcm_channels == 1) {
230 if (chip->pcm_frame == 2) {
231 pdacf_transfer_mono16((u16 *)chip->pcm_area + off, xor, size, rdp_port);
232 } else {
233 pdacf_transfer_mono32((u32 *)chip->pcm_area + off, xor, size, rdp_port);
234 }
235 } else {
236 if (chip->pcm_frame == 2) {
237 pdacf_transfer_stereo16((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
238 } else {
239 pdacf_transfer_stereo32((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
240 }
241 }
242 } else {
243 if (chip->pcm_channels == 1) {
244 if (chip->pcm_frame == 2) {
245 pdacf_transfer_mono16sw((u16 *)chip->pcm_area + off, xor, size, rdp_port);
246 } else {
247 pdacf_transfer_mono32sw((u32 *)chip->pcm_area + off, xor, size, rdp_port);
248 }
249 } else {
250 if (chip->pcm_frame == 2) {
251 pdacf_transfer_stereo16sw((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
252 } else {
253 pdacf_transfer_stereo32sw((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
254 }
255 }
256 }
257}
258
259void pdacf_tasklet(unsigned long private_data)
260{
261 pdacf_t *chip = (pdacf_t *) private_data;
262 int size, off, cont, rdp, wdp;
263
264 if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|PDAUDIOCF_STAT_IS_CONFIGURED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
265 return;
266
267 if (chip->pcm_substream == NULL || chip->pcm_substream->runtime == NULL || !snd_pcm_running(chip->pcm_substream))
268 return;
269
270 rdp = inw(chip->port + PDAUDIOCF_REG_RDP);
271 wdp = inw(chip->port + PDAUDIOCF_REG_WDP);
272 // printk("TASKLET: rdp = %x, wdp = %x\n", rdp, wdp);
273 size = wdp - rdp;
274 if (size < 0)
275 size += 0x10000;
276 if (size == 0)
277 size = 0x10000;
278 size /= chip->pcm_frame;
279 if (size > 64)
280 size -= 32;
281
282#if 0
283 chip->pcm_hwptr += size;
284 chip->pcm_hwptr %= chip->pcm_size;
285 chip->pcm_tdone += size;
286 if (chip->pcm_frame == 2) {
287 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
288 while (size-- > 0) {
289 inw(rdp_port);
290 inw(rdp_port);
291 }
292 } else {
293 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
294 while (size-- > 0) {
295 inw(rdp_port);
296 inw(rdp_port);
297 inw(rdp_port);
298 }
299 }
300#else
301 off = chip->pcm_hwptr + chip->pcm_tdone;
302 off %= chip->pcm_size;
303 chip->pcm_tdone += size;
304 while (size > 0) {
305 cont = chip->pcm_size - off;
306 if (cont > size)
307 cont = size;
308 pdacf_transfer(chip, cont, off);
309 off += cont;
310 off %= chip->pcm_size;
311 size -= cont;
312 }
313#endif
314 spin_lock(&chip->reg_lock);
315 while (chip->pcm_tdone >= chip->pcm_period) {
316 chip->pcm_hwptr += chip->pcm_period;
317 chip->pcm_hwptr %= chip->pcm_size;
318 chip->pcm_tdone -= chip->pcm_period;
319 spin_unlock(&chip->reg_lock);
320 snd_pcm_period_elapsed(chip->pcm_substream);
321 spin_lock(&chip->reg_lock);
322 }
323 spin_unlock(&chip->reg_lock);
324 // printk("TASKLET: end\n");
325}
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