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/driver.h>
22 #include <sound/core.h>
23 #include "pdaudiocf.h"
24 #include <sound/initval.h>
25 #include <asm/irq_regs.h>
30 irqreturn_t pdacf_interrupt(int irq, void *dev)
32 struct snd_pdacf *chip = dev;
35 if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|
36 PDAUDIOCF_STAT_IS_CONFIGURED|
37 PDAUDIOCF_STAT_IS_SUSPENDED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
38 return IRQ_HANDLED; /* IRQ_NONE here? */
40 stat = inw(chip->port + PDAUDIOCF_REG_ISR);
41 if (stat & (PDAUDIOCF_IRQLVL|PDAUDIOCF_IRQOVR)) {
42 if (stat & PDAUDIOCF_IRQOVR) /* should never happen */
43 snd_printk(KERN_ERR "PDAUDIOCF SRAM buffer overrun detected!\n");
44 if (chip->pcm_substream)
45 tasklet_hi_schedule(&chip->tq);
46 if (!(stat & PDAUDIOCF_IRQAKM))
47 stat |= PDAUDIOCF_IRQAKM; /* check rate */
49 if (get_irq_regs() != NULL)
50 snd_ak4117_check_rate_and_errors(chip->ak4117, 0);
54 static inline void pdacf_transfer_mono16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
57 *dst++ = inw(rdp_port) ^ xor;
62 static inline void pdacf_transfer_mono32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
64 register u16 val1, val2;
70 *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
74 static inline void pdacf_transfer_stereo16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
77 *dst++ = inw(rdp_port) ^ xor;
78 *dst++ = inw(rdp_port) ^ xor;
82 static inline void pdacf_transfer_stereo32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
84 register u16 val1, val2, val3;
90 *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
91 *dst++ = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
95 static inline void pdacf_transfer_mono16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
98 *dst++ = swab16(inw(rdp_port) ^ xor);
103 static inline void pdacf_transfer_mono32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
105 register u16 val1, val2;
108 val1 = inw(rdp_port);
109 val2 = inw(rdp_port);
111 *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor);
115 static inline void pdacf_transfer_stereo16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
118 *dst++ = swab16(inw(rdp_port) ^ xor);
119 *dst++ = swab16(inw(rdp_port) ^ xor);
123 static inline void pdacf_transfer_stereo32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
125 register u16 val1, val2, val3;
128 val1 = inw(rdp_port);
129 val2 = inw(rdp_port);
130 val3 = inw(rdp_port);
131 *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor);
132 *dst++ = swab32((((u32)val3 << 16) | (val2 & 0xff00)) ^ xor);
136 static inline void pdacf_transfer_mono24le(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
138 register u16 val1, val2;
142 val1 = inw(rdp_port);
143 val2 = inw(rdp_port);
145 xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor;
146 *dst++ = (u8)(xval1 >> 8);
147 *dst++ = (u8)(xval1 >> 16);
148 *dst++ = (u8)(xval1 >> 24);
152 static inline void pdacf_transfer_mono24be(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port)
154 register u16 val1, val2;
158 val1 = inw(rdp_port);
159 val2 = inw(rdp_port);
161 xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor;
162 *dst++ = (u8)(xval1 >> 24);
163 *dst++ = (u8)(xval1 >> 16);
164 *dst++ = (u8)(xval1 >> 8);
168 static inline void pdacf_transfer_stereo24le(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
170 register u16 val1, val2, val3;
171 register u32 xval1, xval2;
174 val1 = inw(rdp_port);
175 val2 = inw(rdp_port);
176 val3 = inw(rdp_port);
177 xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
178 xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
179 *dst++ = (u8)(xval1 >> 8);
180 *dst++ = (u8)(xval1 >> 16);
181 *dst++ = (u8)(xval1 >> 24);
182 *dst++ = (u8)(xval2 >> 8);
183 *dst++ = (u8)(xval2 >> 16);
184 *dst++ = (u8)(xval2 >> 24);
188 static inline void pdacf_transfer_stereo24be(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port)
190 register u16 val1, val2, val3;
191 register u32 xval1, xval2;
194 val1 = inw(rdp_port);
195 val2 = inw(rdp_port);
196 val3 = inw(rdp_port);
197 xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor;
198 xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor;
199 *dst++ = (u8)(xval1 >> 24);
200 *dst++ = (u8)(xval1 >> 16);
201 *dst++ = (u8)(xval1 >> 8);
202 *dst++ = (u8)(xval2 >> 24);
203 *dst++ = (u8)(xval2 >> 16);
204 *dst++ = (u8)(xval2 >> 8);
208 static void pdacf_transfer(struct snd_pdacf *chip, unsigned int size, unsigned int off)
210 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
211 unsigned int xor = chip->pcm_xor;
213 if (chip->pcm_sample == 3) {
214 if (chip->pcm_little) {
215 if (chip->pcm_channels == 1) {
216 pdacf_transfer_mono24le((char *)chip->pcm_area + (off * 3), xor, size, rdp_port);
218 pdacf_transfer_stereo24le((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
221 if (chip->pcm_channels == 1) {
222 pdacf_transfer_mono24be((char *)chip->pcm_area + (off * 3), xor, size, rdp_port);
224 pdacf_transfer_stereo24be((char *)chip->pcm_area + (off * 6), xor, size, rdp_port);
229 if (chip->pcm_swab == 0) {
230 if (chip->pcm_channels == 1) {
231 if (chip->pcm_frame == 2) {
232 pdacf_transfer_mono16((u16 *)chip->pcm_area + off, xor, size, rdp_port);
234 pdacf_transfer_mono32((u32 *)chip->pcm_area + off, xor, size, rdp_port);
237 if (chip->pcm_frame == 2) {
238 pdacf_transfer_stereo16((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
240 pdacf_transfer_stereo32((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
244 if (chip->pcm_channels == 1) {
245 if (chip->pcm_frame == 2) {
246 pdacf_transfer_mono16sw((u16 *)chip->pcm_area + off, xor, size, rdp_port);
248 pdacf_transfer_mono32sw((u32 *)chip->pcm_area + off, xor, size, rdp_port);
251 if (chip->pcm_frame == 2) {
252 pdacf_transfer_stereo16sw((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
254 pdacf_transfer_stereo32sw((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port);
260 void pdacf_tasklet(unsigned long private_data)
262 struct snd_pdacf *chip = (struct snd_pdacf *) private_data;
263 int size, off, cont, rdp, wdp;
265 if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|PDAUDIOCF_STAT_IS_CONFIGURED)) != PDAUDIOCF_STAT_IS_CONFIGURED)
268 if (chip->pcm_substream == NULL || chip->pcm_substream->runtime == NULL || !snd_pcm_running(chip->pcm_substream))
271 rdp = inw(chip->port + PDAUDIOCF_REG_RDP);
272 wdp = inw(chip->port + PDAUDIOCF_REG_WDP);
273 // printk("TASKLET: rdp = %x, wdp = %x\n", rdp, wdp);
279 size /= chip->pcm_frame;
284 chip->pcm_hwptr += size;
285 chip->pcm_hwptr %= chip->pcm_size;
286 chip->pcm_tdone += size;
287 if (chip->pcm_frame == 2) {
288 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
294 unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD;
302 off = chip->pcm_hwptr + chip->pcm_tdone;
303 off %= chip->pcm_size;
304 chip->pcm_tdone += size;
306 cont = chip->pcm_size - off;
309 pdacf_transfer(chip, cont, off);
311 off %= chip->pcm_size;
315 spin_lock(&chip->reg_lock);
316 while (chip->pcm_tdone >= chip->pcm_period) {
317 chip->pcm_hwptr += chip->pcm_period;
318 chip->pcm_hwptr %= chip->pcm_size;
319 chip->pcm_tdone -= chip->pcm_period;
320 spin_unlock(&chip->reg_lock);
321 snd_pcm_period_elapsed(chip->pcm_substream);
322 spin_lock(&chip->reg_lock);
324 spin_unlock(&chip->reg_lock);
325 // printk("TASKLET: end\n");