From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-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! --- sound/pcmcia/pdaudiocf/pdaudiocf_irq.c | 325 +++++++++++++++++++++++++++++++++ 1 file changed, 325 insertions(+) create mode 100644 sound/pcmcia/pdaudiocf/pdaudiocf_irq.c (limited to 'sound/pcmcia/pdaudiocf/pdaudiocf_irq.c') 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 @@ +/* + * Driver for Sound Core PDAudioCF soundcard + * + * Copyright (c) 2003 by Jaroslav Kysela + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include "pdaudiocf.h" +#include + +/* + * + */ +irqreturn_t pdacf_interrupt(int irq, void *dev, struct pt_regs *regs) +{ + pdacf_t *chip = dev; + unsigned short stat; + + if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE| + PDAUDIOCF_STAT_IS_CONFIGURED| + PDAUDIOCF_STAT_IS_SUSPENDED)) != PDAUDIOCF_STAT_IS_CONFIGURED) + return IRQ_HANDLED; /* IRQ_NONE here? */ + + stat = inw(chip->port + PDAUDIOCF_REG_ISR); + if (stat & (PDAUDIOCF_IRQLVL|PDAUDIOCF_IRQOVR)) { + if (stat & PDAUDIOCF_IRQOVR) /* should never happen */ + snd_printk(KERN_ERR "PDAUDIOCF SRAM buffer overrun detected!\n"); + if (chip->pcm_substream) + tasklet_hi_schedule(&chip->tq); + if (!(stat & PDAUDIOCF_IRQAKM)) + stat |= PDAUDIOCF_IRQAKM; /* check rate */ + } + if (regs != NULL) + snd_ak4117_check_rate_and_errors(chip->ak4117, 0); + return IRQ_HANDLED; +} + +static inline void pdacf_transfer_mono16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) +{ + while (size-- > 0) { + *dst++ = inw(rdp_port) ^ xor; + inw(rdp_port); + } +} + +static inline void pdacf_transfer_mono32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + inw(rdp_port); + *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; + } +} + +static inline void pdacf_transfer_stereo16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) +{ + while (size-- > 0) { + *dst++ = inw(rdp_port) ^ xor; + *dst++ = inw(rdp_port) ^ xor; + } +} + +static inline void pdacf_transfer_stereo32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2, val3; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + val3 = inw(rdp_port); + *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; + *dst++ = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor; + } +} + +static inline void pdacf_transfer_mono16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) +{ + while (size-- > 0) { + *dst++ = swab16(inw(rdp_port) ^ xor); + inw(rdp_port); + } +} + +static inline void pdacf_transfer_mono32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + inw(rdp_port); + *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor); + } +} + +static inline void pdacf_transfer_stereo16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) +{ + while (size-- > 0) { + *dst++ = swab16(inw(rdp_port) ^ xor); + *dst++ = swab16(inw(rdp_port) ^ xor); + } +} + +static inline void pdacf_transfer_stereo32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2, val3; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + val3 = inw(rdp_port); + *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor); + *dst++ = swab32((((u32)val3 << 16) | (val2 & 0xff00)) ^ xor); + } +} + +static inline void pdacf_transfer_mono24le(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2; + register u32 xval1; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + inw(rdp_port); + xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor; + *dst++ = (u8)(xval1 >> 8); + *dst++ = (u8)(xval1 >> 16); + *dst++ = (u8)(xval1 >> 24); + } +} + +static inline void pdacf_transfer_mono24be(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2; + register u32 xval1; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + inw(rdp_port); + xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor; + *dst++ = (u8)(xval1 >> 24); + *dst++ = (u8)(xval1 >> 16); + *dst++ = (u8)(xval1 >> 8); + } +} + +static inline void pdacf_transfer_stereo24le(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2, val3; + register u32 xval1, xval2; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + val3 = inw(rdp_port); + xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; + xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor; + *dst++ = (u8)(xval1 >> 8); + *dst++ = (u8)(xval1 >> 16); + *dst++ = (u8)(xval1 >> 24); + *dst++ = (u8)(xval2 >> 8); + *dst++ = (u8)(xval2 >> 16); + *dst++ = (u8)(xval2 >> 24); + } +} + +static inline void pdacf_transfer_stereo24be(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port) +{ + register u16 val1, val2, val3; + register u32 xval1, xval2; + + while (size-- > 0) { + val1 = inw(rdp_port); + val2 = inw(rdp_port); + val3 = inw(rdp_port); + xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; + xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor; + *dst++ = (u8)(xval1 >> 24); + *dst++ = (u8)(xval1 >> 16); + *dst++ = (u8)(xval1 >> 8); + *dst++ = (u8)(xval2 >> 24); + *dst++ = (u8)(xval2 >> 16); + *dst++ = (u8)(xval2 >> 8); + } +} + +static void pdacf_transfer(pdacf_t *chip, unsigned int size, unsigned int off) +{ + unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD; + unsigned int xor = chip->pcm_xor; + + if (chip->pcm_sample == 3) { + if (chip->pcm_little) { + if (chip->pcm_channels == 1) { + pdacf_transfer_mono24le((char *)chip->pcm_area + (off * 3), xor, size, rdp_port); + } else { + pdacf_transfer_stereo24le((char *)chip->pcm_area + (off * 6), xor, size, rdp_port); + } + } else { + if (chip->pcm_channels == 1) { + pdacf_transfer_mono24be((char *)chip->pcm_area + (off * 3), xor, size, rdp_port); + } else { + pdacf_transfer_stereo24be((char *)chip->pcm_area + (off * 6), xor, size, rdp_port); + } + } + return; + } + if (chip->pcm_swab == 0) { + if (chip->pcm_channels == 1) { + if (chip->pcm_frame == 2) { + pdacf_transfer_mono16((u16 *)chip->pcm_area + off, xor, size, rdp_port); + } else { + pdacf_transfer_mono32((u32 *)chip->pcm_area + off, xor, size, rdp_port); + } + } else { + if (chip->pcm_frame == 2) { + pdacf_transfer_stereo16((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port); + } else { + pdacf_transfer_stereo32((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port); + } + } + } else { + if (chip->pcm_channels == 1) { + if (chip->pcm_frame == 2) { + pdacf_transfer_mono16sw((u16 *)chip->pcm_area + off, xor, size, rdp_port); + } else { + pdacf_transfer_mono32sw((u32 *)chip->pcm_area + off, xor, size, rdp_port); + } + } else { + if (chip->pcm_frame == 2) { + pdacf_transfer_stereo16sw((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port); + } else { + pdacf_transfer_stereo32sw((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port); + } + } + } +} + +void pdacf_tasklet(unsigned long private_data) +{ + pdacf_t *chip = (pdacf_t *) private_data; + int size, off, cont, rdp, wdp; + + if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|PDAUDIOCF_STAT_IS_CONFIGURED)) != PDAUDIOCF_STAT_IS_CONFIGURED) + return; + + if (chip->pcm_substream == NULL || chip->pcm_substream->runtime == NULL || !snd_pcm_running(chip->pcm_substream)) + return; + + rdp = inw(chip->port + PDAUDIOCF_REG_RDP); + wdp = inw(chip->port + PDAUDIOCF_REG_WDP); + // printk("TASKLET: rdp = %x, wdp = %x\n", rdp, wdp); + size = wdp - rdp; + if (size < 0) + size += 0x10000; + if (size == 0) + size = 0x10000; + size /= chip->pcm_frame; + if (size > 64) + size -= 32; + +#if 0 + chip->pcm_hwptr += size; + chip->pcm_hwptr %= chip->pcm_size; + chip->pcm_tdone += size; + if (chip->pcm_frame == 2) { + unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD; + while (size-- > 0) { + inw(rdp_port); + inw(rdp_port); + } + } else { + unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD; + while (size-- > 0) { + inw(rdp_port); + inw(rdp_port); + inw(rdp_port); + } + } +#else + off = chip->pcm_hwptr + chip->pcm_tdone; + off %= chip->pcm_size; + chip->pcm_tdone += size; + while (size > 0) { + cont = chip->pcm_size - off; + if (cont > size) + cont = size; + pdacf_transfer(chip, cont, off); + off += cont; + off %= chip->pcm_size; + size -= cont; + } +#endif + spin_lock(&chip->reg_lock); + while (chip->pcm_tdone >= chip->pcm_period) { + chip->pcm_hwptr += chip->pcm_period; + chip->pcm_hwptr %= chip->pcm_size; + chip->pcm_tdone -= chip->pcm_period; + spin_unlock(&chip->reg_lock); + snd_pcm_period_elapsed(chip->pcm_substream); + spin_lock(&chip->reg_lock); + } + spin_unlock(&chip->reg_lock); + // printk("TASKLET: end\n"); +} -- cgit