2 * Driver for Sound Core PDAudioCF soundcard
4 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
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.
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.
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
21 #include <sound/core.h>
22 #include "pdaudiocf.h"
23 #include <sound/initval.h>
24 #include <asm/irq_regs.h>
29 irqreturn_t pdacf_interrupt(int irq, void *dev)
31 struct snd_pdacf *chip = dev;
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? */
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_schedule(&chip->tq);
45 if (!(stat & PDAUDIOCF_IRQAKM))
46 stat |= PDAUDIOCF_IRQAKM; /* check rate */
48 if (get_irq_regs() != NULL)
49 snd_ak4117_check_rate_and_errors(chip->ak4117, 0);
53 static inline void pdacf_transfer_mono16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
56 *dst++ = inw(rdp_port) ^ xor;
61 static inline void pdacf_transfer_mono32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
63 register u16 val1, val2;
69 *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
73 static inline void pdacf_transfer_stereo16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
76 *dst++ = inw(rdp_port) ^ xor;
77 *dst++ = inw(rdp_port) ^ xor;
81 static inline void pdacf_transfer_stereo32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
83 register u16 val1, val2, val3;
89 *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
90 *dst++ = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
94 static inline void pdacf_transfer_mono16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
97 *dst++ = swab16(inw(rdp_port) ^ xor);
102 static inline void pdacf_transfer_mono32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
104 register u16 val1, val2;
107 val1 = inw(rdp_port);
108 val2 = inw(rdp_port);
110 *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor);
114 static inline void pdacf_transfer_stereo16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
117 *dst++ = swab16(inw(rdp_port) ^ xor);
118 *dst++ = swab16(inw(rdp_port) ^ xor);
122 static inline void pdacf_transfer_stereo32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
124 register u16 val1, val2, val3;
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);
135 static inline void pdacf_transfer_mono24le(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
137 register u16 val1, val2;
141 val1 = inw(rdp_port);
142 val2 = 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);
151 static inline void pdacf_transfer_mono24be(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
153 register u16 val1, val2;
157 val1 = inw(rdp_port);
158 val2 = 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);
167 static inline void pdacf_transfer_stereo24le(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
169 register u16 val1, val2, val3;
170 register u32 xval1, xval2;
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);
187 static inline void pdacf_transfer_stereo24be(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
189 register u16 val1, val2, val3;
190 register u32 xval1, xval2;
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);
207 static void pdacf_transfer(struct snd_pdacf *chip, unsigned int size, unsigned int off)
209 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
210 unsigned int xor = chip->pcm_xor;
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);
217 pdacf_transfer_stereo24le((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
220 if (chip->pcm_channels == 1) {
221 pdacf_transfer_mono24be((char *)chip->pcm_area + (off * 3), xor, size, rdp_port);
223 pdacf_transfer_stereo24be((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
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);
233 pdacf_transfer_mono32((u32 *)chip->pcm_area + off, xor, size, rdp_port);
236 if (chip->pcm_frame == 2) {
237 pdacf_transfer_stereo16((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
239 pdacf_transfer_stereo32((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
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);
247 pdacf_transfer_mono32sw((u32 *)chip->pcm_area + off, xor, size, rdp_port);
250 if (chip->pcm_frame == 2) {
251 pdacf_transfer_stereo16sw((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
253 pdacf_transfer_stereo32sw((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
259 void pdacf_tasklet(unsigned long private_data)
261 struct snd_pdacf *chip = (struct snd_pdacf *) private_data;
262 int size, off, cont, rdp, wdp;
264 if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|PDAUDIOCF_STAT_IS_CONFIGURED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
267 if (chip->pcm_substream == NULL || chip->pcm_substream->runtime == NULL || !snd_pcm_running(chip->pcm_substream))
270 rdp = inw(chip->port + PDAUDIOCF_REG_RDP);
271 wdp = inw(chip->port + PDAUDIOCF_REG_WDP);
272 /* printk(KERN_DEBUG "TASKLET: rdp = %x, wdp = %x\n", rdp, wdp); */
278 size /= chip->pcm_frame;
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;
293 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
301 off = chip->pcm_hwptr + chip->pcm_tdone;
302 off %= chip->pcm_size;
303 chip->pcm_tdone += size;
305 cont = chip->pcm_size - off;
308 pdacf_transfer(chip, cont, off);
310 off %= chip->pcm_size;
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);
323 spin_unlock(&chip->reg_lock);
324 /* printk(KERN_DEBUG "TASKLET: end\n"); */