![Thomas Gleixner](/assets/img/avatar_default.png)
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2262 lines
58 KiB
C
2262 lines
58 KiB
C
/*
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* ite8172.c -- ITE IT8172G Sound Driver.
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*
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* Copyright 2001 MontaVista Software Inc.
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* Author: MontaVista Software, Inc.
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* stevel@mvista.com or source@mvista.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* Module command line parameters:
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*
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* Supported devices:
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* /dev/dsp standard OSS /dev/dsp device
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* /dev/mixer standard OSS /dev/mixer device
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*
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* Notes:
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*
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* 1. Much of the OSS buffer allocation, ioctl's, and mmap'ing are
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* taken, slightly modified or not at all, from the ES1371 driver,
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* so refer to the credits in es1371.c for those. The rest of the
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* code (probe, open, read, write, the ISR, etc.) is new.
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* 2. The following support is untested:
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* * Memory mapping the audio buffers, and the ioctl controls that go
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* with it.
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* * S/PDIF output.
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* * I2S support.
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* 3. The following is not supported:
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* * legacy audio mode.
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* 4. Support for volume button interrupts is implemented but doesn't
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* work yet.
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*
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* Revision history
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* 02.08.2001 Initial release
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* 06.22.2001 Added I2S support
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* 07.30.2003 Removed initialisation to zero for static variables
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* (spdif[NR_DEVICE], i2s_fmt[NR_DEVICE], and devindex)
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*/
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/ioport.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/sound.h>
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#include <linux/slab.h>
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#include <linux/soundcard.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/poll.h>
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#include <linux/bitops.h>
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#include <linux/proc_fs.h>
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#include <linux/spinlock.h>
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#include <linux/smp_lock.h>
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#include <linux/ac97_codec.h>
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#include <linux/interrupt.h>
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#include <linux/mutex.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include <asm/uaccess.h>
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#include <asm/it8172/it8172.h>
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/* --------------------------------------------------------------------- */
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#undef OSS_DOCUMENTED_MIXER_SEMANTICS
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#define IT8172_DEBUG
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#undef IT8172_VERBOSE_DEBUG
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#define DBG(x) {}
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#define IT8172_MODULE_NAME "IT8172 audio"
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#define PFX IT8172_MODULE_NAME
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#ifdef IT8172_DEBUG
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#define dbg(format, arg...) printk(KERN_DEBUG PFX ": " format "\n" , ## arg)
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#else
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#define dbg(format, arg...) do {} while (0)
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#endif
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#define err(format, arg...) printk(KERN_ERR PFX ": " format "\n" , ## arg)
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#define info(format, arg...) printk(KERN_INFO PFX ": " format "\n" , ## arg)
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#define warn(format, arg...) printk(KERN_WARNING PFX ": " format "\n" , ## arg)
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#define IT8172_MODULE_NAME "IT8172 audio"
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#define PFX IT8172_MODULE_NAME
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#ifdef IT8172_DEBUG
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#define dbg(format, arg...) printk(KERN_DEBUG PFX ": " format "\n" , ## arg)
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#else
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#define dbg(format, arg...) do {} while (0)
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#endif
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#define err(format, arg...) printk(KERN_ERR PFX ": " format "\n" , ## arg)
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#define info(format, arg...) printk(KERN_INFO PFX ": " format "\n" , ## arg)
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#define warn(format, arg...) printk(KERN_WARNING PFX ": " format "\n" , ## arg)
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static const unsigned sample_shift[] = { 0, 1, 1, 2 };
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/*
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* Audio Controller register bit definitions follow. See
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* include/asm/it8172/it8172.h for register offsets.
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*/
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/* PCM Out Volume Reg */
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#define PCMOV_PCMOM (1<<15) /* PCM Out Mute default 1: mute */
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#define PCMOV_PCMRCG_BIT 8 /* PCM Right channel Gain */
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#define PCMOV_PCMRCG_MASK (0x1f<<PCMOV_PCMRCG_BIT)
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#define PCMOV_PCMLCG_BIT 0 /* PCM Left channel gain */
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#define PCMOV_PCMLCG_MASK 0x1f
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/* FM Out Volume Reg */
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#define FMOV_FMOM (1<<15) /* FM Out Mute default 1: mute */
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#define FMOV_FMRCG_BIT 8 /* FM Right channel Gain */
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#define FMOV_FMRCG_MASK (0x1f<<FMOV_FMRCG_BIT)
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#define FMOV_FMLCG_BIT 0 /* FM Left channel gain */
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#define FMOV_FMLCG_MASK 0x1f
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/* I2S Out Volume Reg */
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#define I2SV_I2SOM (1<<15) /* I2S Out Mute default 1: mute */
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#define I2SV_I2SRCG_BIT 8 /* I2S Right channel Gain */
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#define I2SV_I2SRCG_MASK (0x1f<<I2SV_I2SRCG_BIT)
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#define I2SV_I2SLCG_BIT 0 /* I2S Left channel gain */
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#define I2SV_I2SLCG_MASK 0x1f
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/* Digital Recording Source Select Reg */
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#define DRSS_BIT 0
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#define DRSS_MASK 0x07
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#define DRSS_AC97_PRIM 0
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#define DRSS_FM 1
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#define DRSS_I2S 2
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#define DRSS_PCM 3
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#define DRSS_AC97_SEC 4
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/* Playback/Capture Channel Control Registers */
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#define CC_SM (1<<15) /* Stereo, Mone 0: mono 1: stereo */
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#define CC_DF (1<<14) /* Data Format 0: 8 bit 1: 16 bit */
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#define CC_FMT_BIT 14
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#define CC_FMT_MASK (0x03<<CC_FMT_BIT)
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#define CC_CF_BIT 12 /* Channel format (Playback only) */
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#define CC_CF_MASK (0x03<<CC_CF_BIT)
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#define CC_CF_2 0
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#define CC_CF_4 (1<<CC_CF_BIT)
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#define CC_CF_6 (2<<CC_CF_BIT)
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#define CC_SR_BIT 8 /* sample Rate */
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#define CC_SR_MASK (0x0f<<CC_SR_BIT)
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#define CC_SR_5500 0
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#define CC_SR_8000 (1<<CC_SR_BIT)
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#define CC_SR_9600 (2<<CC_SR_BIT)
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#define CC_SR_11025 (3<<CC_SR_BIT)
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#define CC_SR_16000 (4<<CC_SR_BIT)
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#define CC_SR_19200 (5<<CC_SR_BIT)
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#define CC_SR_22050 (6<<CC_SR_BIT)
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#define CC_SR_32000 (7<<CC_SR_BIT)
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#define CC_SR_38400 (8<<CC_SR_BIT)
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#define CC_SR_44100 (9<<CC_SR_BIT)
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#define CC_SR_48000 (10<<CC_SR_BIT)
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#define CC_CSP (1<<7) /* Channel stop
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* 0: End of Current buffer
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* 1: Immediately stop when rec stop */
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#define CC_CP (1<<6) /* Channel pause 0: normal, 1: pause */
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#define CC_CA (1<<5) /* Channel Action 0: Stop , 1: start */
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#define CC_CB2L (1<<2) /* Cur. buf. 2 xfr is last 0: No, 1: Yes */
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#define CC_CB1L (1<<1) /* Cur. buf. 1 xfr is last 0: No, 1: Yes */
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#define CC_DE 1 /* DFC/DFIFO Data Empty 1: empty, 0: not empty
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* (Playback only)
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*/
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/* Codec Control Reg */
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#define CODECC_GME (1<<9) /* AC97 GPIO Mode enable */
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#define CODECC_ATM (1<<8) /* AC97 ATE test mode 0: test 1: normal */
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#define CODECC_WR (1<<6) /* AC97 Warn reset 1: warm reset , 0: Normal */
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#define CODECC_CR (1<<5) /* AC97 Cold reset 1: Cold reset , 0: Normal */
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/* I2S Control Reg */
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#define I2SMC_SR_BIT 6 /* I2S Sampling rate
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* 00: 48KHz, 01: 44.1 KHz, 10: 32 32 KHz */
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#define I2SMC_SR_MASK (0x03<<I2SMC_SR_BIT)
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#define I2SMC_SR_48000 0
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#define I2SMC_SR_44100 (1<<I2SMC_SR_BIT)
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#define I2SMC_SR_32000 (2<<I2SMC_SR_BIT)
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#define I2SMC_SRSS (1<<5) /* Sample Rate Source Select 1:S/W, 0: H/W */
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#define I2SMC_I2SF_BIT 0 /* I2S Format */
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#define I2SMC_I2SF_MASK 0x03
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#define I2SMC_I2SF_DAC 0
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#define I2SMC_I2SF_ADC 2
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#define I2SMC_I2SF_I2S 3
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/* Volume up, Down, Mute */
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#define VS_VMP (1<<2) /* Volume mute 1: pushed, 0: not */
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#define VS_VDP (1<<1) /* Volume Down 1: pushed, 0: not */
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#define VS_VUP 1 /* Volime Up 1: pushed, 0: not */
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/* SRC, Mixer test control/DFC status reg */
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#define SRCS_DPUSC (1<<5) /* DFC Playback underrun Status/clear */
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#define SRCS_DCOSC (1<<4) /* DFC Capture Overrun Status/clear */
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#define SRCS_SIS (1<<3) /* SRC input select 1: Mixer, 0: Codec I/F */
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#define SRCS_CDIS_BIT 0 /* Codec Data Input Select */
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#define SRCS_CDIS_MASK 0x07
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#define SRCS_CDIS_MIXER 0
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#define SRCS_CDIS_PCM 1
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#define SRCS_CDIS_I2S 2
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#define SRCS_CDIS_FM 3
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#define SRCS_CDIS_DFC 4
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/* Codec Index Reg command Port */
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#define CIRCP_CID_BIT 10
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#define CIRCP_CID_MASK (0x03<<CIRCP_CID_BIT)
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#define CIRCP_CPS (1<<9) /* Command Port Status 0: ready, 1: busy */
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#define CIRCP_DPVF (1<<8) /* Data Port Valid Flag 0: invalis, 1: valid */
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#define CIRCP_RWC (1<<7) /* Read/write command */
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#define CIRCP_CIA_BIT 0
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#define CIRCP_CIA_MASK 0x007F /* Codec Index Address */
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/* Test Mode Control/Test group Select Control */
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/* General Control Reg */
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#define GC_VDC_BIT 6 /* Volume Division Control */
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#define GC_VDC_MASK (0x03<<GC_VDC_BIT)
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#define GC_VDC_NONE 0
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#define GC_VDC_DIV2 (1<<GC_VDC_BIT)
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#define GC_VDC_DIV4 (2<<GC_VDC_BIT)
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#define GC_SOE (1<<2) /* S/PDIF Output enable */
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#define GC_SWR 1 /* Software warn reset */
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/* Interrupt mask Control Reg */
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#define IMC_VCIM (1<<6) /* Volume CNTL interrupt mask */
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#define IMC_CCIM (1<<1) /* Capture Chan. iterrupt mask */
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#define IMC_PCIM 1 /* Playback Chan. interrupt mask */
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/* Interrupt status/clear reg */
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#define ISC_VCI (1<<6) /* Volume CNTL interrupt 1: clears */
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#define ISC_CCI (1<<1) /* Capture Chan. interrupt 1: clears */
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#define ISC_PCI 1 /* Playback Chan. interrupt 1: clears */
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/* misc stuff */
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#define POLL_COUNT 0x5000
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/* --------------------------------------------------------------------- */
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/*
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* Define DIGITAL1 as the I2S channel, since it is not listed in
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* soundcard.h.
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*/
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#define SOUND_MIXER_I2S SOUND_MIXER_DIGITAL1
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#define SOUND_MASK_I2S SOUND_MASK_DIGITAL1
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#define SOUND_MIXER_READ_I2S MIXER_READ(SOUND_MIXER_I2S)
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#define SOUND_MIXER_WRITE_I2S MIXER_WRITE(SOUND_MIXER_I2S)
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/* --------------------------------------------------------------------- */
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struct it8172_state {
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/* list of it8172 devices */
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struct list_head devs;
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/* the corresponding pci_dev structure */
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struct pci_dev *dev;
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/* soundcore stuff */
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int dev_audio;
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/* hardware resources */
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unsigned long io;
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unsigned int irq;
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/* PCI ID's */
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u16 vendor;
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u16 device;
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u8 rev; /* the chip revision */
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/* options */
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int spdif_volume; /* S/PDIF output is enabled if != -1 */
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int i2s_volume; /* current I2S out volume, in OSS format */
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int i2s_recording;/* 1 = recording from I2S, 0 = not */
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#ifdef IT8172_DEBUG
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/* debug /proc entry */
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struct proc_dir_entry *ps;
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struct proc_dir_entry *ac97_ps;
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#endif /* IT8172_DEBUG */
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struct ac97_codec codec;
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unsigned short pcc, capcc;
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unsigned dacrate, adcrate;
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spinlock_t lock;
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struct mutex open_mutex;
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mode_t open_mode;
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wait_queue_head_t open_wait;
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struct dmabuf {
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void *rawbuf;
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dma_addr_t dmaaddr;
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unsigned buforder;
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unsigned numfrag;
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unsigned fragshift;
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void* nextIn;
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void* nextOut;
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int count;
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int curBufPtr;
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unsigned total_bytes;
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unsigned error; /* over/underrun */
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wait_queue_head_t wait;
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/* redundant, but makes calculations easier */
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unsigned fragsize;
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unsigned dmasize;
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unsigned fragsamples;
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/* OSS stuff */
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unsigned mapped:1;
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unsigned ready:1;
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unsigned stopped:1;
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unsigned ossfragshift;
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int ossmaxfrags;
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unsigned subdivision;
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} dma_dac, dma_adc;
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};
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/* --------------------------------------------------------------------- */
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static LIST_HEAD(devs);
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/* --------------------------------------------------------------------- */
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static inline unsigned ld2(unsigned int x)
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{
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unsigned r = 0;
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if (x >= 0x10000) {
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x >>= 16;
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r += 16;
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}
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if (x >= 0x100) {
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x >>= 8;
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r += 8;
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}
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if (x >= 0x10) {
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x >>= 4;
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r += 4;
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}
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if (x >= 4) {
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x >>= 2;
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r += 2;
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}
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if (x >= 2)
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r++;
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return r;
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}
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/* --------------------------------------------------------------------- */
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static void it8172_delay(int msec)
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{
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unsigned long tmo;
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signed long tmo2;
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if (in_interrupt())
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return;
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tmo = jiffies + (msec*HZ)/1000;
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for (;;) {
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tmo2 = tmo - jiffies;
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if (tmo2 <= 0)
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break;
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schedule_timeout(tmo2);
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}
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}
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static unsigned short
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get_compat_rate(unsigned* rate)
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{
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unsigned rate_out = *rate;
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unsigned short sr;
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if (rate_out >= 46050) {
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sr = CC_SR_48000; rate_out = 48000;
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} else if (rate_out >= 41250) {
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sr = CC_SR_44100; rate_out = 44100;
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} else if (rate_out >= 35200) {
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sr = CC_SR_38400; rate_out = 38400;
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} else if (rate_out >= 27025) {
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sr = CC_SR_32000; rate_out = 32000;
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} else if (rate_out >= 20625) {
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sr = CC_SR_22050; rate_out = 22050;
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} else if (rate_out >= 17600) {
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sr = CC_SR_19200; rate_out = 19200;
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} else if (rate_out >= 13513) {
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sr = CC_SR_16000; rate_out = 16000;
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} else if (rate_out >= 10313) {
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sr = CC_SR_11025; rate_out = 11025;
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} else if (rate_out >= 8800) {
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sr = CC_SR_9600; rate_out = 9600;
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} else if (rate_out >= 6750) {
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sr = CC_SR_8000; rate_out = 8000;
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} else {
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sr = CC_SR_5500; rate_out = 5500;
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}
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*rate = rate_out;
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return sr;
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}
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static void set_adc_rate(struct it8172_state *s, unsigned rate)
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{
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unsigned long flags;
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unsigned short sr;
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sr = get_compat_rate(&rate);
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spin_lock_irqsave(&s->lock, flags);
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s->capcc &= ~CC_SR_MASK;
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s->capcc |= sr;
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outw(s->capcc, s->io+IT_AC_CAPCC);
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spin_unlock_irqrestore(&s->lock, flags);
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s->adcrate = rate;
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}
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static void set_dac_rate(struct it8172_state *s, unsigned rate)
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{
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unsigned long flags;
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unsigned short sr;
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sr = get_compat_rate(&rate);
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spin_lock_irqsave(&s->lock, flags);
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s->pcc &= ~CC_SR_MASK;
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s->pcc |= sr;
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outw(s->pcc, s->io+IT_AC_PCC);
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spin_unlock_irqrestore(&s->lock, flags);
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s->dacrate = rate;
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}
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/* --------------------------------------------------------------------- */
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static u16 rdcodec(struct ac97_codec *codec, u8 addr)
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{
|
|
struct it8172_state *s = (struct it8172_state *)codec->private_data;
|
|
unsigned long flags;
|
|
unsigned short circp, data;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
|
|
for (i = 0; i < POLL_COUNT; i++)
|
|
if (!(inw(s->io+IT_AC_CIRCP) & CIRCP_CPS))
|
|
break;
|
|
if (i == POLL_COUNT)
|
|
err("rdcodec: codec ready poll expired!");
|
|
|
|
circp = addr & CIRCP_CIA_MASK;
|
|
circp |= (codec->id << CIRCP_CID_BIT);
|
|
circp |= CIRCP_RWC; // read command
|
|
outw(circp, s->io+IT_AC_CIRCP);
|
|
|
|
/* now wait for the data */
|
|
for (i = 0; i < POLL_COUNT; i++)
|
|
if (inw(s->io+IT_AC_CIRCP) & CIRCP_DPVF)
|
|
break;
|
|
if (i == POLL_COUNT)
|
|
err("rdcodec: read poll expired!");
|
|
|
|
data = inw(s->io+IT_AC_CIRDP);
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
|
|
return data;
|
|
}
|
|
|
|
|
|
static void wrcodec(struct ac97_codec *codec, u8 addr, u16 data)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)codec->private_data;
|
|
unsigned long flags;
|
|
unsigned short circp;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
|
|
for (i = 0; i < POLL_COUNT; i++)
|
|
if (!(inw(s->io+IT_AC_CIRCP) & CIRCP_CPS))
|
|
break;
|
|
if (i == POLL_COUNT)
|
|
err("wrcodec: codec ready poll expired!");
|
|
|
|
circp = addr & CIRCP_CIA_MASK;
|
|
circp |= (codec->id << CIRCP_CID_BIT);
|
|
circp &= ~CIRCP_RWC; // write command
|
|
|
|
outw(data, s->io+IT_AC_CIRDP); // send data first
|
|
outw(circp, s->io+IT_AC_CIRCP);
|
|
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
}
|
|
|
|
|
|
static void waitcodec(struct ac97_codec *codec)
|
|
{
|
|
unsigned short temp;
|
|
|
|
/* codec_wait is used to wait for a ready state after
|
|
an AC97_RESET. */
|
|
it8172_delay(10);
|
|
|
|
temp = rdcodec(codec, 0x26);
|
|
|
|
// If power down, power up
|
|
if (temp & 0x3f00) {
|
|
// Power on
|
|
wrcodec(codec, 0x26, 0);
|
|
it8172_delay(100);
|
|
// Reread
|
|
temp = rdcodec(codec, 0x26);
|
|
}
|
|
|
|
// Check if Codec REF,ANL,DAC,ADC ready***/
|
|
if ((temp & 0x3f0f) != 0x000f) {
|
|
err("codec reg 26 status (0x%x) not ready!!", temp);
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
static inline void stop_adc(struct it8172_state *s)
|
|
{
|
|
struct dmabuf* db = &s->dma_adc;
|
|
unsigned long flags;
|
|
unsigned char imc;
|
|
|
|
if (db->stopped)
|
|
return;
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
|
|
s->capcc &= ~(CC_CA | CC_CP | CC_CB2L | CC_CB1L);
|
|
s->capcc |= CC_CSP;
|
|
outw(s->capcc, s->io+IT_AC_CAPCC);
|
|
|
|
// disable capture interrupt
|
|
imc = inb(s->io+IT_AC_IMC);
|
|
outb(imc | IMC_CCIM, s->io+IT_AC_IMC);
|
|
|
|
db->stopped = 1;
|
|
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
}
|
|
|
|
static inline void stop_dac(struct it8172_state *s)
|
|
{
|
|
struct dmabuf* db = &s->dma_dac;
|
|
unsigned long flags;
|
|
unsigned char imc;
|
|
|
|
if (db->stopped)
|
|
return;
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
|
|
s->pcc &= ~(CC_CA | CC_CP | CC_CB2L | CC_CB1L);
|
|
s->pcc |= CC_CSP;
|
|
outw(s->pcc, s->io+IT_AC_PCC);
|
|
|
|
// disable playback interrupt
|
|
imc = inb(s->io+IT_AC_IMC);
|
|
outb(imc | IMC_PCIM, s->io+IT_AC_IMC);
|
|
|
|
db->stopped = 1;
|
|
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
}
|
|
|
|
static void start_dac(struct it8172_state *s)
|
|
{
|
|
struct dmabuf* db = &s->dma_dac;
|
|
unsigned long flags;
|
|
unsigned char imc;
|
|
unsigned long buf1, buf2;
|
|
|
|
if (!db->stopped)
|
|
return;
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
|
|
// reset Buffer 1 and 2 pointers to nextOut and nextOut+fragsize
|
|
buf1 = virt_to_bus(db->nextOut);
|
|
buf2 = buf1 + db->fragsize;
|
|
if (buf2 >= db->dmaaddr + db->dmasize)
|
|
buf2 -= db->dmasize;
|
|
|
|
outl(buf1, s->io+IT_AC_PCB1STA);
|
|
outl(buf2, s->io+IT_AC_PCB2STA);
|
|
db->curBufPtr = IT_AC_PCB1STA;
|
|
|
|
// enable playback interrupt
|
|
imc = inb(s->io+IT_AC_IMC);
|
|
outb(imc & ~IMC_PCIM, s->io+IT_AC_IMC);
|
|
|
|
s->pcc &= ~(CC_CSP | CC_CP | CC_CB2L | CC_CB1L);
|
|
s->pcc |= CC_CA;
|
|
outw(s->pcc, s->io+IT_AC_PCC);
|
|
|
|
db->stopped = 0;
|
|
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
}
|
|
|
|
static void start_adc(struct it8172_state *s)
|
|
{
|
|
struct dmabuf* db = &s->dma_adc;
|
|
unsigned long flags;
|
|
unsigned char imc;
|
|
unsigned long buf1, buf2;
|
|
|
|
if (!db->stopped)
|
|
return;
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
|
|
// reset Buffer 1 and 2 pointers to nextIn and nextIn+fragsize
|
|
buf1 = virt_to_bus(db->nextIn);
|
|
buf2 = buf1 + db->fragsize;
|
|
if (buf2 >= db->dmaaddr + db->dmasize)
|
|
buf2 -= db->dmasize;
|
|
|
|
outl(buf1, s->io+IT_AC_CAPB1STA);
|
|
outl(buf2, s->io+IT_AC_CAPB2STA);
|
|
db->curBufPtr = IT_AC_CAPB1STA;
|
|
|
|
// enable capture interrupt
|
|
imc = inb(s->io+IT_AC_IMC);
|
|
outb(imc & ~IMC_CCIM, s->io+IT_AC_IMC);
|
|
|
|
s->capcc &= ~(CC_CSP | CC_CP | CC_CB2L | CC_CB1L);
|
|
s->capcc |= CC_CA;
|
|
outw(s->capcc, s->io+IT_AC_CAPCC);
|
|
|
|
db->stopped = 0;
|
|
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
#define DMABUF_DEFAULTORDER (17-PAGE_SHIFT)
|
|
#define DMABUF_MINORDER 1
|
|
|
|
static inline void dealloc_dmabuf(struct it8172_state *s, struct dmabuf *db)
|
|
{
|
|
struct page *page, *pend;
|
|
|
|
if (db->rawbuf) {
|
|
/* undo marking the pages as reserved */
|
|
pend = virt_to_page(db->rawbuf +
|
|
(PAGE_SIZE << db->buforder) - 1);
|
|
for (page = virt_to_page(db->rawbuf); page <= pend; page++)
|
|
ClearPageReserved(page);
|
|
pci_free_consistent(s->dev, PAGE_SIZE << db->buforder,
|
|
db->rawbuf, db->dmaaddr);
|
|
}
|
|
db->rawbuf = db->nextIn = db->nextOut = NULL;
|
|
db->mapped = db->ready = 0;
|
|
}
|
|
|
|
static int prog_dmabuf(struct it8172_state *s, struct dmabuf *db,
|
|
unsigned rate, unsigned fmt, unsigned reg)
|
|
{
|
|
int order;
|
|
unsigned bytepersec;
|
|
unsigned bufs;
|
|
struct page *page, *pend;
|
|
|
|
if (!db->rawbuf) {
|
|
db->ready = db->mapped = 0;
|
|
for (order = DMABUF_DEFAULTORDER;
|
|
order >= DMABUF_MINORDER; order--)
|
|
if ((db->rawbuf =
|
|
pci_alloc_consistent(s->dev,
|
|
PAGE_SIZE << order,
|
|
&db->dmaaddr)))
|
|
break;
|
|
if (!db->rawbuf)
|
|
return -ENOMEM;
|
|
db->buforder = order;
|
|
/* now mark the pages as reserved;
|
|
otherwise remap_pfn_range doesn't do what we want */
|
|
pend = virt_to_page(db->rawbuf +
|
|
(PAGE_SIZE << db->buforder) - 1);
|
|
for (page = virt_to_page(db->rawbuf); page <= pend; page++)
|
|
SetPageReserved(page);
|
|
}
|
|
|
|
db->count = 0;
|
|
db->nextIn = db->nextOut = db->rawbuf;
|
|
|
|
bytepersec = rate << sample_shift[fmt];
|
|
bufs = PAGE_SIZE << db->buforder;
|
|
if (db->ossfragshift) {
|
|
if ((1000 << db->ossfragshift) < bytepersec)
|
|
db->fragshift = ld2(bytepersec/1000);
|
|
else
|
|
db->fragshift = db->ossfragshift;
|
|
} else {
|
|
db->fragshift = ld2(bytepersec/100/(db->subdivision ?
|
|
db->subdivision : 1));
|
|
if (db->fragshift < 3)
|
|
db->fragshift = 3;
|
|
}
|
|
db->numfrag = bufs >> db->fragshift;
|
|
while (db->numfrag < 4 && db->fragshift > 3) {
|
|
db->fragshift--;
|
|
db->numfrag = bufs >> db->fragshift;
|
|
}
|
|
db->fragsize = 1 << db->fragshift;
|
|
if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
|
|
db->numfrag = db->ossmaxfrags;
|
|
db->fragsamples = db->fragsize >> sample_shift[fmt];
|
|
db->dmasize = db->numfrag << db->fragshift;
|
|
memset(db->rawbuf, (fmt & (CC_DF>>CC_FMT_BIT)) ? 0 : 0x80, bufs);
|
|
|
|
#ifdef IT8172_VERBOSE_DEBUG
|
|
dbg("rate=%d, fragsize=%d, numfrag=%d, dmasize=%d",
|
|
rate, db->fragsize, db->numfrag, db->dmasize);
|
|
#endif
|
|
|
|
// set data length register
|
|
outw(db->fragsize, s->io+reg+2);
|
|
db->ready = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int prog_dmabuf_adc(struct it8172_state *s)
|
|
{
|
|
stop_adc(s);
|
|
return prog_dmabuf(s, &s->dma_adc, s->adcrate,
|
|
(s->capcc & CC_FMT_MASK) >> CC_FMT_BIT,
|
|
IT_AC_CAPCC);
|
|
}
|
|
|
|
static inline int prog_dmabuf_dac(struct it8172_state *s)
|
|
{
|
|
stop_dac(s);
|
|
return prog_dmabuf(s, &s->dma_dac, s->dacrate,
|
|
(s->pcc & CC_FMT_MASK) >> CC_FMT_BIT,
|
|
IT_AC_PCC);
|
|
}
|
|
|
|
|
|
/* hold spinlock for the following! */
|
|
|
|
static irqreturn_t it8172_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)dev_id;
|
|
struct dmabuf* dac = &s->dma_dac;
|
|
struct dmabuf* adc = &s->dma_adc;
|
|
unsigned char isc, vs;
|
|
unsigned short vol, mute;
|
|
unsigned long newptr;
|
|
|
|
spin_lock(&s->lock);
|
|
|
|
isc = inb(s->io+IT_AC_ISC);
|
|
|
|
/* fastpath out, to ease interrupt sharing */
|
|
if (!(isc & (ISC_VCI | ISC_CCI | ISC_PCI))) {
|
|
spin_unlock(&s->lock);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/* clear audio interrupts first */
|
|
outb(isc | ISC_VCI | ISC_CCI | ISC_PCI, s->io+IT_AC_ISC);
|
|
|
|
/* handle volume button events (ignore if S/PDIF enabled) */
|
|
if ((isc & ISC_VCI) && s->spdif_volume == -1) {
|
|
vs = inb(s->io+IT_AC_VS);
|
|
outb(0, s->io+IT_AC_VS);
|
|
vol = inw(s->io+IT_AC_PCMOV);
|
|
mute = vol & PCMOV_PCMOM;
|
|
vol &= PCMOV_PCMLCG_MASK;
|
|
if ((vs & VS_VUP) && vol > 0)
|
|
vol--;
|
|
if ((vs & VS_VDP) && vol < 0x1f)
|
|
vol++;
|
|
vol |= (vol << PCMOV_PCMRCG_BIT);
|
|
if (vs & VS_VMP)
|
|
vol |= (mute ^ PCMOV_PCMOM);
|
|
outw(vol, s->io+IT_AC_PCMOV);
|
|
}
|
|
|
|
/* update capture pointers */
|
|
if (isc & ISC_CCI) {
|
|
if (adc->count > adc->dmasize - adc->fragsize) {
|
|
// Overrun. Stop ADC and log the error
|
|
stop_adc(s);
|
|
adc->error++;
|
|
dbg("adc overrun");
|
|
} else {
|
|
newptr = virt_to_bus(adc->nextIn) + 2*adc->fragsize;
|
|
if (newptr >= adc->dmaaddr + adc->dmasize)
|
|
newptr -= adc->dmasize;
|
|
|
|
outl(newptr, s->io+adc->curBufPtr);
|
|
adc->curBufPtr = (adc->curBufPtr == IT_AC_CAPB1STA) ?
|
|
IT_AC_CAPB2STA : IT_AC_CAPB1STA;
|
|
|
|
adc->nextIn += adc->fragsize;
|
|
if (adc->nextIn >= adc->rawbuf + adc->dmasize)
|
|
adc->nextIn -= adc->dmasize;
|
|
|
|
adc->count += adc->fragsize;
|
|
adc->total_bytes += adc->fragsize;
|
|
|
|
/* wake up anybody listening */
|
|
if (waitqueue_active(&adc->wait))
|
|
wake_up_interruptible(&adc->wait);
|
|
}
|
|
}
|
|
|
|
/* update playback pointers */
|
|
if (isc & ISC_PCI) {
|
|
newptr = virt_to_bus(dac->nextOut) + 2*dac->fragsize;
|
|
if (newptr >= dac->dmaaddr + dac->dmasize)
|
|
newptr -= dac->dmasize;
|
|
|
|
outl(newptr, s->io+dac->curBufPtr);
|
|
dac->curBufPtr = (dac->curBufPtr == IT_AC_PCB1STA) ?
|
|
IT_AC_PCB2STA : IT_AC_PCB1STA;
|
|
|
|
dac->nextOut += dac->fragsize;
|
|
if (dac->nextOut >= dac->rawbuf + dac->dmasize)
|
|
dac->nextOut -= dac->dmasize;
|
|
|
|
dac->count -= dac->fragsize;
|
|
dac->total_bytes += dac->fragsize;
|
|
|
|
/* wake up anybody listening */
|
|
if (waitqueue_active(&dac->wait))
|
|
wake_up_interruptible(&dac->wait);
|
|
|
|
if (dac->count <= 0)
|
|
stop_dac(s);
|
|
}
|
|
|
|
spin_unlock(&s->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
static int it8172_open_mixdev(struct inode *inode, struct file *file)
|
|
{
|
|
int minor = iminor(inode);
|
|
struct list_head *list;
|
|
struct it8172_state *s;
|
|
|
|
for (list = devs.next; ; list = list->next) {
|
|
if (list == &devs)
|
|
return -ENODEV;
|
|
s = list_entry(list, struct it8172_state, devs);
|
|
if (s->codec.dev_mixer == minor)
|
|
break;
|
|
}
|
|
file->private_data = s;
|
|
return nonseekable_open(inode, file);
|
|
}
|
|
|
|
static int it8172_release_mixdev(struct inode *inode, struct file *file)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
static u16
|
|
cvt_ossvol(unsigned int gain)
|
|
{
|
|
u16 ret;
|
|
|
|
if (gain == 0)
|
|
return 0;
|
|
|
|
if (gain > 100)
|
|
gain = 100;
|
|
|
|
ret = (100 - gain + 32) / 4;
|
|
ret = ret > 31 ? 31 : ret;
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)codec->private_data;
|
|
unsigned int left, right;
|
|
unsigned long flags;
|
|
int val;
|
|
u16 vol;
|
|
|
|
/*
|
|
* When we are in S/PDIF mode, we want to disable any analog output so
|
|
* we filter the master/PCM channel volume ioctls.
|
|
*
|
|
* Also filter I2S channel, which AC'97 knows nothing about.
|
|
*/
|
|
|
|
switch (cmd) {
|
|
case SOUND_MIXER_WRITE_VOLUME:
|
|
// if not in S/PDIF mode, pass to AC'97
|
|
if (s->spdif_volume == -1)
|
|
break;
|
|
return 0;
|
|
case SOUND_MIXER_WRITE_PCM:
|
|
// if not in S/PDIF mode, pass to AC'97
|
|
if (s->spdif_volume == -1)
|
|
break;
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
right = ((val >> 8) & 0xff);
|
|
left = (val & 0xff);
|
|
if (right > 100)
|
|
right = 100;
|
|
if (left > 100)
|
|
left = 100;
|
|
s->spdif_volume = (right << 8) | left;
|
|
vol = cvt_ossvol(left);
|
|
vol |= (cvt_ossvol(right) << PCMOV_PCMRCG_BIT);
|
|
if (vol == 0)
|
|
vol = PCMOV_PCMOM; // mute
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
outw(vol, s->io+IT_AC_PCMOV);
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
return put_user(s->spdif_volume, (int *)arg);
|
|
case SOUND_MIXER_READ_PCM:
|
|
// if not in S/PDIF mode, pass to AC'97
|
|
if (s->spdif_volume == -1)
|
|
break;
|
|
return put_user(s->spdif_volume, (int *)arg);
|
|
case SOUND_MIXER_WRITE_I2S:
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
right = ((val >> 8) & 0xff);
|
|
left = (val & 0xff);
|
|
if (right > 100)
|
|
right = 100;
|
|
if (left > 100)
|
|
left = 100;
|
|
s->i2s_volume = (right << 8) | left;
|
|
vol = cvt_ossvol(left);
|
|
vol |= (cvt_ossvol(right) << I2SV_I2SRCG_BIT);
|
|
if (vol == 0)
|
|
vol = I2SV_I2SOM; // mute
|
|
outw(vol, s->io+IT_AC_I2SV);
|
|
return put_user(s->i2s_volume, (int *)arg);
|
|
case SOUND_MIXER_READ_I2S:
|
|
return put_user(s->i2s_volume, (int *)arg);
|
|
case SOUND_MIXER_WRITE_RECSRC:
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (val & SOUND_MASK_I2S) {
|
|
s->i2s_recording = 1;
|
|
outb(DRSS_I2S, s->io+IT_AC_DRSS);
|
|
return 0;
|
|
} else {
|
|
s->i2s_recording = 0;
|
|
outb(DRSS_AC97_PRIM, s->io+IT_AC_DRSS);
|
|
// now let AC'97 select record source
|
|
break;
|
|
}
|
|
case SOUND_MIXER_READ_RECSRC:
|
|
if (s->i2s_recording)
|
|
return put_user(SOUND_MASK_I2S, (int *)arg);
|
|
else
|
|
// let AC'97 report recording source
|
|
break;
|
|
}
|
|
|
|
return codec->mixer_ioctl(codec, cmd, arg);
|
|
}
|
|
|
|
static int it8172_ioctl_mixdev(struct inode *inode, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)file->private_data;
|
|
struct ac97_codec *codec = &s->codec;
|
|
|
|
return mixdev_ioctl(codec, cmd, arg);
|
|
}
|
|
|
|
static /*const*/ struct file_operations it8172_mixer_fops = {
|
|
.owner = THIS_MODULE,
|
|
.llseek = no_llseek,
|
|
.ioctl = it8172_ioctl_mixdev,
|
|
.open = it8172_open_mixdev,
|
|
.release = it8172_release_mixdev,
|
|
};
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
static int drain_dac(struct it8172_state *s, int nonblock)
|
|
{
|
|
unsigned long flags;
|
|
int count, tmo;
|
|
|
|
if (s->dma_dac.mapped || !s->dma_dac.ready || s->dma_dac.stopped)
|
|
return 0;
|
|
|
|
for (;;) {
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
count = s->dma_dac.count;
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (count <= 0)
|
|
break;
|
|
if (signal_pending(current))
|
|
break;
|
|
//if (nonblock)
|
|
//return -EBUSY;
|
|
tmo = 1000 * count / s->dacrate;
|
|
tmo >>= sample_shift[(s->pcc & CC_FMT_MASK) >> CC_FMT_BIT];
|
|
it8172_delay(tmo);
|
|
}
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
return 0;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
|
|
/*
|
|
* Copy audio data to/from user buffer from/to dma buffer, taking care
|
|
* that we wrap when reading/writing the dma buffer. Returns actual byte
|
|
* count written to or read from the dma buffer.
|
|
*/
|
|
static int copy_dmabuf_user(struct dmabuf *db, char* userbuf,
|
|
int count, int to_user)
|
|
{
|
|
char* bufptr = to_user ? db->nextOut : db->nextIn;
|
|
char* bufend = db->rawbuf + db->dmasize;
|
|
|
|
if (bufptr + count > bufend) {
|
|
int partial = (int)(bufend - bufptr);
|
|
if (to_user) {
|
|
if (copy_to_user(userbuf, bufptr, partial))
|
|
return -EFAULT;
|
|
if (copy_to_user(userbuf + partial, db->rawbuf,
|
|
count - partial))
|
|
return -EFAULT;
|
|
} else {
|
|
if (copy_from_user(bufptr, userbuf, partial))
|
|
return -EFAULT;
|
|
if (copy_from_user(db->rawbuf,
|
|
userbuf + partial,
|
|
count - partial))
|
|
return -EFAULT;
|
|
}
|
|
} else {
|
|
if (to_user) {
|
|
if (copy_to_user(userbuf, bufptr, count))
|
|
return -EFAULT;
|
|
} else {
|
|
if (copy_from_user(bufptr, userbuf, count))
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
|
|
static ssize_t it8172_read(struct file *file, char *buffer,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)file->private_data;
|
|
struct dmabuf *db = &s->dma_adc;
|
|
ssize_t ret;
|
|
unsigned long flags;
|
|
int cnt, remainder, avail;
|
|
|
|
if (db->mapped)
|
|
return -ENXIO;
|
|
if (!access_ok(VERIFY_WRITE, buffer, count))
|
|
return -EFAULT;
|
|
ret = 0;
|
|
|
|
while (count > 0) {
|
|
// wait for samples in capture buffer
|
|
do {
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
if (db->stopped)
|
|
start_adc(s);
|
|
avail = db->count;
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (avail <= 0) {
|
|
if (file->f_flags & O_NONBLOCK) {
|
|
if (!ret)
|
|
ret = -EAGAIN;
|
|
return ret;
|
|
}
|
|
interruptible_sleep_on(&db->wait);
|
|
if (signal_pending(current)) {
|
|
if (!ret)
|
|
ret = -ERESTARTSYS;
|
|
return ret;
|
|
}
|
|
}
|
|
} while (avail <= 0);
|
|
|
|
// copy from nextOut to user
|
|
if ((cnt = copy_dmabuf_user(db, buffer, count > avail ?
|
|
avail : count, 1)) < 0) {
|
|
if (!ret)
|
|
ret = -EFAULT;
|
|
return ret;
|
|
}
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
db->count -= cnt;
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
|
|
db->nextOut += cnt;
|
|
if (db->nextOut >= db->rawbuf + db->dmasize)
|
|
db->nextOut -= db->dmasize;
|
|
|
|
count -= cnt;
|
|
buffer += cnt;
|
|
ret += cnt;
|
|
} // while (count > 0)
|
|
|
|
/*
|
|
* See if the dma buffer count after this read call is
|
|
* aligned on a fragsize boundary. If not, read from
|
|
* buffer until we reach a boundary, and let's hope this
|
|
* is just the last remainder of an audio record. If not
|
|
* it means the user is not reading in fragsize chunks, in
|
|
* which case it's his/her fault that there are audio gaps
|
|
* in their record.
|
|
*/
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
remainder = db->count % db->fragsize;
|
|
if (remainder) {
|
|
db->nextOut += remainder;
|
|
if (db->nextOut >= db->rawbuf + db->dmasize)
|
|
db->nextOut -= db->dmasize;
|
|
db->count -= remainder;
|
|
}
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t it8172_write(struct file *file, const char *buffer,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)file->private_data;
|
|
struct dmabuf *db = &s->dma_dac;
|
|
ssize_t ret;
|
|
unsigned long flags;
|
|
int cnt, remainder, avail;
|
|
|
|
if (db->mapped)
|
|
return -ENXIO;
|
|
if (!access_ok(VERIFY_READ, buffer, count))
|
|
return -EFAULT;
|
|
ret = 0;
|
|
|
|
while (count > 0) {
|
|
// wait for space in playback buffer
|
|
do {
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
avail = db->dmasize - db->count;
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (avail <= 0) {
|
|
if (file->f_flags & O_NONBLOCK) {
|
|
if (!ret)
|
|
ret = -EAGAIN;
|
|
return ret;
|
|
}
|
|
interruptible_sleep_on(&db->wait);
|
|
if (signal_pending(current)) {
|
|
if (!ret)
|
|
ret = -ERESTARTSYS;
|
|
return ret;
|
|
}
|
|
}
|
|
} while (avail <= 0);
|
|
|
|
// copy to nextIn
|
|
if ((cnt = copy_dmabuf_user(db, (char*)buffer,
|
|
count > avail ?
|
|
avail : count, 0)) < 0) {
|
|
if (!ret)
|
|
ret = -EFAULT;
|
|
return ret;
|
|
}
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
db->count += cnt;
|
|
if (db->stopped)
|
|
start_dac(s);
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
|
|
db->nextIn += cnt;
|
|
if (db->nextIn >= db->rawbuf + db->dmasize)
|
|
db->nextIn -= db->dmasize;
|
|
|
|
count -= cnt;
|
|
buffer += cnt;
|
|
ret += cnt;
|
|
} // while (count > 0)
|
|
|
|
/*
|
|
* See if the dma buffer count after this write call is
|
|
* aligned on a fragsize boundary. If not, fill buffer
|
|
* with silence to the next boundary, and let's hope this
|
|
* is just the last remainder of an audio playback. If not
|
|
* it means the user is not sending us fragsize chunks, in
|
|
* which case it's his/her fault that there are audio gaps
|
|
* in their playback.
|
|
*/
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
remainder = db->count % db->fragsize;
|
|
if (remainder) {
|
|
int fill_cnt = db->fragsize - remainder;
|
|
memset(db->nextIn, 0, fill_cnt);
|
|
db->nextIn += fill_cnt;
|
|
if (db->nextIn >= db->rawbuf + db->dmasize)
|
|
db->nextIn -= db->dmasize;
|
|
db->count += fill_cnt;
|
|
}
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* No kernel lock - we have our own spinlock */
|
|
static unsigned int it8172_poll(struct file *file,
|
|
struct poll_table_struct *wait)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)file->private_data;
|
|
unsigned long flags;
|
|
unsigned int mask = 0;
|
|
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
if (!s->dma_dac.ready)
|
|
return 0;
|
|
poll_wait(file, &s->dma_dac.wait, wait);
|
|
}
|
|
if (file->f_mode & FMODE_READ) {
|
|
if (!s->dma_adc.ready)
|
|
return 0;
|
|
poll_wait(file, &s->dma_adc.wait, wait);
|
|
}
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
if (file->f_mode & FMODE_READ) {
|
|
if (s->dma_adc.count >= (signed)s->dma_adc.fragsize)
|
|
mask |= POLLIN | POLLRDNORM;
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
if (s->dma_dac.mapped) {
|
|
if (s->dma_dac.count >= (signed)s->dma_dac.fragsize)
|
|
mask |= POLLOUT | POLLWRNORM;
|
|
} else {
|
|
if ((signed)s->dma_dac.dmasize >=
|
|
s->dma_dac.count + (signed)s->dma_dac.fragsize)
|
|
mask |= POLLOUT | POLLWRNORM;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
return mask;
|
|
}
|
|
|
|
static int it8172_mmap(struct file *file, struct vm_area_struct *vma)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)file->private_data;
|
|
struct dmabuf *db;
|
|
unsigned long size;
|
|
|
|
lock_kernel();
|
|
if (vma->vm_flags & VM_WRITE)
|
|
db = &s->dma_dac;
|
|
else if (vma->vm_flags & VM_READ)
|
|
db = &s->dma_adc;
|
|
else {
|
|
unlock_kernel();
|
|
return -EINVAL;
|
|
}
|
|
if (vma->vm_pgoff != 0) {
|
|
unlock_kernel();
|
|
return -EINVAL;
|
|
}
|
|
size = vma->vm_end - vma->vm_start;
|
|
if (size > (PAGE_SIZE << db->buforder)) {
|
|
unlock_kernel();
|
|
return -EINVAL;
|
|
}
|
|
if (remap_pfn_range(vma, vma->vm_start,
|
|
virt_to_phys(db->rawbuf) >> PAGE_SHIFT,
|
|
size, vma->vm_page_prot)) {
|
|
unlock_kernel();
|
|
return -EAGAIN;
|
|
}
|
|
db->mapped = 1;
|
|
unlock_kernel();
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef IT8172_VERBOSE_DEBUG
|
|
static struct ioctl_str_t {
|
|
unsigned int cmd;
|
|
const char* str;
|
|
} ioctl_str[] = {
|
|
{SNDCTL_DSP_RESET, "SNDCTL_DSP_RESET"},
|
|
{SNDCTL_DSP_SYNC, "SNDCTL_DSP_SYNC"},
|
|
{SNDCTL_DSP_SPEED, "SNDCTL_DSP_SPEED"},
|
|
{SNDCTL_DSP_STEREO, "SNDCTL_DSP_STEREO"},
|
|
{SNDCTL_DSP_GETBLKSIZE, "SNDCTL_DSP_GETBLKSIZE"},
|
|
{SNDCTL_DSP_SAMPLESIZE, "SNDCTL_DSP_SAMPLESIZE"},
|
|
{SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS"},
|
|
{SOUND_PCM_WRITE_CHANNELS, "SOUND_PCM_WRITE_CHANNELS"},
|
|
{SOUND_PCM_WRITE_FILTER, "SOUND_PCM_WRITE_FILTER"},
|
|
{SNDCTL_DSP_POST, "SNDCTL_DSP_POST"},
|
|
{SNDCTL_DSP_SUBDIVIDE, "SNDCTL_DSP_SUBDIVIDE"},
|
|
{SNDCTL_DSP_SETFRAGMENT, "SNDCTL_DSP_SETFRAGMENT"},
|
|
{SNDCTL_DSP_GETFMTS, "SNDCTL_DSP_GETFMTS"},
|
|
{SNDCTL_DSP_SETFMT, "SNDCTL_DSP_SETFMT"},
|
|
{SNDCTL_DSP_GETOSPACE, "SNDCTL_DSP_GETOSPACE"},
|
|
{SNDCTL_DSP_GETISPACE, "SNDCTL_DSP_GETISPACE"},
|
|
{SNDCTL_DSP_NONBLOCK, "SNDCTL_DSP_NONBLOCK"},
|
|
{SNDCTL_DSP_GETCAPS, "SNDCTL_DSP_GETCAPS"},
|
|
{SNDCTL_DSP_GETTRIGGER, "SNDCTL_DSP_GETTRIGGER"},
|
|
{SNDCTL_DSP_SETTRIGGER, "SNDCTL_DSP_SETTRIGGER"},
|
|
{SNDCTL_DSP_GETIPTR, "SNDCTL_DSP_GETIPTR"},
|
|
{SNDCTL_DSP_GETOPTR, "SNDCTL_DSP_GETOPTR"},
|
|
{SNDCTL_DSP_MAPINBUF, "SNDCTL_DSP_MAPINBUF"},
|
|
{SNDCTL_DSP_MAPOUTBUF, "SNDCTL_DSP_MAPOUTBUF"},
|
|
{SNDCTL_DSP_SETSYNCRO, "SNDCTL_DSP_SETSYNCRO"},
|
|
{SNDCTL_DSP_SETDUPLEX, "SNDCTL_DSP_SETDUPLEX"},
|
|
{SNDCTL_DSP_GETODELAY, "SNDCTL_DSP_GETODELAY"},
|
|
{SNDCTL_DSP_GETCHANNELMASK, "SNDCTL_DSP_GETCHANNELMASK"},
|
|
{SNDCTL_DSP_BIND_CHANNEL, "SNDCTL_DSP_BIND_CHANNEL"},
|
|
{OSS_GETVERSION, "OSS_GETVERSION"},
|
|
{SOUND_PCM_READ_RATE, "SOUND_PCM_READ_RATE"},
|
|
{SOUND_PCM_READ_CHANNELS, "SOUND_PCM_READ_CHANNELS"},
|
|
{SOUND_PCM_READ_BITS, "SOUND_PCM_READ_BITS"},
|
|
{SOUND_PCM_READ_FILTER, "SOUND_PCM_READ_FILTER"}
|
|
};
|
|
#endif
|
|
|
|
static int it8172_ioctl(struct inode *inode, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)file->private_data;
|
|
unsigned long flags;
|
|
audio_buf_info abinfo;
|
|
count_info cinfo;
|
|
int count;
|
|
int val, mapped, ret, diff;
|
|
|
|
mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
|
|
((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
|
|
|
|
#ifdef IT8172_VERBOSE_DEBUG
|
|
for (count=0; count<sizeof(ioctl_str)/sizeof(ioctl_str[0]); count++) {
|
|
if (ioctl_str[count].cmd == cmd)
|
|
break;
|
|
}
|
|
if (count < sizeof(ioctl_str)/sizeof(ioctl_str[0]))
|
|
dbg("ioctl %s, arg=0x%08x",
|
|
ioctl_str[count].str, (unsigned int)arg);
|
|
else
|
|
dbg("ioctl unknown, 0x%x", cmd);
|
|
#endif
|
|
|
|
switch (cmd) {
|
|
case OSS_GETVERSION:
|
|
return put_user(SOUND_VERSION, (int *)arg);
|
|
|
|
case SNDCTL_DSP_SYNC:
|
|
if (file->f_mode & FMODE_WRITE)
|
|
return drain_dac(s, file->f_flags & O_NONBLOCK);
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_SETDUPLEX:
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_GETCAPS:
|
|
return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME |
|
|
DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg);
|
|
|
|
case SNDCTL_DSP_RESET:
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
synchronize_irq(s->irq);
|
|
s->dma_dac.count = s->dma_dac.total_bytes = 0;
|
|
s->dma_dac.nextIn = s->dma_dac.nextOut =
|
|
s->dma_dac.rawbuf;
|
|
}
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
synchronize_irq(s->irq);
|
|
s->dma_adc.count = s->dma_adc.total_bytes = 0;
|
|
s->dma_adc.nextIn = s->dma_adc.nextOut =
|
|
s->dma_adc.rawbuf;
|
|
}
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_SPEED:
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (val >= 0) {
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
set_adc_rate(s, val);
|
|
if ((ret = prog_dmabuf_adc(s)))
|
|
return ret;
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
set_dac_rate(s, val);
|
|
if ((ret = prog_dmabuf_dac(s)))
|
|
return ret;
|
|
}
|
|
}
|
|
return put_user((file->f_mode & FMODE_READ) ?
|
|
s->adcrate : s->dacrate, (int *)arg);
|
|
|
|
case SNDCTL_DSP_STEREO:
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
if (val)
|
|
s->capcc |= CC_SM;
|
|
else
|
|
s->capcc &= ~CC_SM;
|
|
outw(s->capcc, s->io+IT_AC_CAPCC);
|
|
if ((ret = prog_dmabuf_adc(s)))
|
|
return ret;
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
if (val)
|
|
s->pcc |= CC_SM;
|
|
else
|
|
s->pcc &= ~CC_SM;
|
|
outw(s->pcc, s->io+IT_AC_PCC);
|
|
if ((ret = prog_dmabuf_dac(s)))
|
|
return ret;
|
|
}
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_CHANNELS:
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (val != 0) {
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
if (val >= 2) {
|
|
val = 2;
|
|
s->capcc |= CC_SM;
|
|
}
|
|
else
|
|
s->capcc &= ~CC_SM;
|
|
outw(s->capcc, s->io+IT_AC_CAPCC);
|
|
if ((ret = prog_dmabuf_adc(s)))
|
|
return ret;
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
switch (val) {
|
|
case 1:
|
|
s->pcc &= ~CC_SM;
|
|
break;
|
|
case 2:
|
|
s->pcc |= CC_SM;
|
|
break;
|
|
default:
|
|
// FIX! support multichannel???
|
|
val = 2;
|
|
s->pcc |= CC_SM;
|
|
break;
|
|
}
|
|
outw(s->pcc, s->io+IT_AC_PCC);
|
|
if ((ret = prog_dmabuf_dac(s)))
|
|
return ret;
|
|
}
|
|
}
|
|
return put_user(val, (int *)arg);
|
|
|
|
case SNDCTL_DSP_GETFMTS: /* Returns a mask */
|
|
return put_user(AFMT_S16_LE|AFMT_U8, (int *)arg);
|
|
|
|
case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (val != AFMT_QUERY) {
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
if (val == AFMT_S16_LE)
|
|
s->capcc |= CC_DF;
|
|
else {
|
|
val = AFMT_U8;
|
|
s->capcc &= ~CC_DF;
|
|
}
|
|
outw(s->capcc, s->io+IT_AC_CAPCC);
|
|
if ((ret = prog_dmabuf_adc(s)))
|
|
return ret;
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
if (val == AFMT_S16_LE)
|
|
s->pcc |= CC_DF;
|
|
else {
|
|
val = AFMT_U8;
|
|
s->pcc &= ~CC_DF;
|
|
}
|
|
outw(s->pcc, s->io+IT_AC_PCC);
|
|
if ((ret = prog_dmabuf_dac(s)))
|
|
return ret;
|
|
}
|
|
} else {
|
|
if (file->f_mode & FMODE_READ)
|
|
val = (s->capcc & CC_DF) ?
|
|
AFMT_S16_LE : AFMT_U8;
|
|
else
|
|
val = (s->pcc & CC_DF) ?
|
|
AFMT_S16_LE : AFMT_U8;
|
|
}
|
|
return put_user(val, (int *)arg);
|
|
|
|
case SNDCTL_DSP_POST:
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_GETTRIGGER:
|
|
val = 0;
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
if (file->f_mode & FMODE_READ && !s->dma_adc.stopped)
|
|
val |= PCM_ENABLE_INPUT;
|
|
if (file->f_mode & FMODE_WRITE && !s->dma_dac.stopped)
|
|
val |= PCM_ENABLE_OUTPUT;
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
return put_user(val, (int *)arg);
|
|
|
|
case SNDCTL_DSP_SETTRIGGER:
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (file->f_mode & FMODE_READ) {
|
|
if (val & PCM_ENABLE_INPUT)
|
|
start_adc(s);
|
|
else
|
|
stop_adc(s);
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
if (val & PCM_ENABLE_OUTPUT)
|
|
start_dac(s);
|
|
else
|
|
stop_dac(s);
|
|
}
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_GETOSPACE:
|
|
if (!(file->f_mode & FMODE_WRITE))
|
|
return -EINVAL;
|
|
abinfo.fragsize = s->dma_dac.fragsize;
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
count = s->dma_dac.count;
|
|
if (!s->dma_dac.stopped)
|
|
count -= (s->dma_dac.fragsize -
|
|
inw(s->io+IT_AC_PCDL));
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (count < 0)
|
|
count = 0;
|
|
abinfo.bytes = s->dma_dac.dmasize - count;
|
|
abinfo.fragstotal = s->dma_dac.numfrag;
|
|
abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;
|
|
return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ?
|
|
-EFAULT : 0;
|
|
|
|
case SNDCTL_DSP_GETISPACE:
|
|
if (!(file->f_mode & FMODE_READ))
|
|
return -EINVAL;
|
|
abinfo.fragsize = s->dma_adc.fragsize;
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
count = s->dma_adc.count;
|
|
if (!s->dma_adc.stopped)
|
|
count += (s->dma_adc.fragsize -
|
|
inw(s->io+IT_AC_CAPCDL));
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (count < 0)
|
|
count = 0;
|
|
abinfo.bytes = count;
|
|
abinfo.fragstotal = s->dma_adc.numfrag;
|
|
abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift;
|
|
return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ?
|
|
-EFAULT : 0;
|
|
|
|
case SNDCTL_DSP_NONBLOCK:
|
|
file->f_flags |= O_NONBLOCK;
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_GETODELAY:
|
|
if (!(file->f_mode & FMODE_WRITE))
|
|
return -EINVAL;
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
count = s->dma_dac.count;
|
|
if (!s->dma_dac.stopped)
|
|
count -= (s->dma_dac.fragsize -
|
|
inw(s->io+IT_AC_PCDL));
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (count < 0)
|
|
count = 0;
|
|
return put_user(count, (int *)arg);
|
|
|
|
case SNDCTL_DSP_GETIPTR:
|
|
if (!(file->f_mode & FMODE_READ))
|
|
return -EINVAL;
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
cinfo.bytes = s->dma_adc.total_bytes;
|
|
count = s->dma_adc.count;
|
|
if (!s->dma_adc.stopped) {
|
|
diff = s->dma_adc.fragsize - inw(s->io+IT_AC_CAPCDL);
|
|
count += diff;
|
|
cinfo.bytes += diff;
|
|
cinfo.ptr = inl(s->io+s->dma_adc.curBufPtr) -
|
|
s->dma_adc.dmaaddr;
|
|
} else
|
|
cinfo.ptr = virt_to_bus(s->dma_adc.nextIn) -
|
|
s->dma_adc.dmaaddr;
|
|
if (s->dma_adc.mapped)
|
|
s->dma_adc.count &= s->dma_adc.fragsize-1;
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (count < 0)
|
|
count = 0;
|
|
cinfo.blocks = count >> s->dma_adc.fragshift;
|
|
if (copy_to_user((void *)arg, &cinfo, sizeof(cinfo)))
|
|
return -EFAULT;
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_GETOPTR:
|
|
if (!(file->f_mode & FMODE_READ))
|
|
return -EINVAL;
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
cinfo.bytes = s->dma_dac.total_bytes;
|
|
count = s->dma_dac.count;
|
|
if (!s->dma_dac.stopped) {
|
|
diff = s->dma_dac.fragsize - inw(s->io+IT_AC_CAPCDL);
|
|
count -= diff;
|
|
cinfo.bytes += diff;
|
|
cinfo.ptr = inl(s->io+s->dma_dac.curBufPtr) -
|
|
s->dma_dac.dmaaddr;
|
|
} else
|
|
cinfo.ptr = virt_to_bus(s->dma_dac.nextOut) -
|
|
s->dma_dac.dmaaddr;
|
|
if (s->dma_dac.mapped)
|
|
s->dma_dac.count &= s->dma_dac.fragsize-1;
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
if (count < 0)
|
|
count = 0;
|
|
cinfo.blocks = count >> s->dma_dac.fragshift;
|
|
if (copy_to_user((void *)arg, &cinfo, sizeof(cinfo)))
|
|
return -EFAULT;
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_GETBLKSIZE:
|
|
if (file->f_mode & FMODE_WRITE)
|
|
return put_user(s->dma_dac.fragsize, (int *)arg);
|
|
else
|
|
return put_user(s->dma_adc.fragsize, (int *)arg);
|
|
|
|
case SNDCTL_DSP_SETFRAGMENT:
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
s->dma_adc.ossfragshift = val & 0xffff;
|
|
s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff;
|
|
if (s->dma_adc.ossfragshift < 4)
|
|
s->dma_adc.ossfragshift = 4;
|
|
if (s->dma_adc.ossfragshift > 15)
|
|
s->dma_adc.ossfragshift = 15;
|
|
if (s->dma_adc.ossmaxfrags < 4)
|
|
s->dma_adc.ossmaxfrags = 4;
|
|
if ((ret = prog_dmabuf_adc(s)))
|
|
return ret;
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
s->dma_dac.ossfragshift = val & 0xffff;
|
|
s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff;
|
|
if (s->dma_dac.ossfragshift < 4)
|
|
s->dma_dac.ossfragshift = 4;
|
|
if (s->dma_dac.ossfragshift > 15)
|
|
s->dma_dac.ossfragshift = 15;
|
|
if (s->dma_dac.ossmaxfrags < 4)
|
|
s->dma_dac.ossmaxfrags = 4;
|
|
if ((ret = prog_dmabuf_dac(s)))
|
|
return ret;
|
|
}
|
|
return 0;
|
|
|
|
case SNDCTL_DSP_SUBDIVIDE:
|
|
if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) ||
|
|
(file->f_mode & FMODE_WRITE && s->dma_dac.subdivision))
|
|
return -EINVAL;
|
|
if (get_user(val, (int *)arg))
|
|
return -EFAULT;
|
|
if (val != 1 && val != 2 && val != 4)
|
|
return -EINVAL;
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
s->dma_adc.subdivision = val;
|
|
if ((ret = prog_dmabuf_adc(s)))
|
|
return ret;
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
s->dma_dac.subdivision = val;
|
|
if ((ret = prog_dmabuf_dac(s)))
|
|
return ret;
|
|
}
|
|
return 0;
|
|
|
|
case SOUND_PCM_READ_RATE:
|
|
return put_user((file->f_mode & FMODE_READ) ?
|
|
s->adcrate : s->dacrate, (int *)arg);
|
|
|
|
case SOUND_PCM_READ_CHANNELS:
|
|
if (file->f_mode & FMODE_READ)
|
|
return put_user((s->capcc & CC_SM) ? 2 : 1,
|
|
(int *)arg);
|
|
else
|
|
return put_user((s->pcc & CC_SM) ? 2 : 1,
|
|
(int *)arg);
|
|
|
|
case SOUND_PCM_READ_BITS:
|
|
if (file->f_mode & FMODE_READ)
|
|
return put_user((s->capcc & CC_DF) ? 16 : 8,
|
|
(int *)arg);
|
|
else
|
|
return put_user((s->pcc & CC_DF) ? 16 : 8,
|
|
(int *)arg);
|
|
|
|
case SOUND_PCM_WRITE_FILTER:
|
|
case SNDCTL_DSP_SETSYNCRO:
|
|
case SOUND_PCM_READ_FILTER:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return mixdev_ioctl(&s->codec, cmd, arg);
|
|
}
|
|
|
|
|
|
static int it8172_open(struct inode *inode, struct file *file)
|
|
{
|
|
int minor = iminor(inode);
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
unsigned long flags;
|
|
struct list_head *list;
|
|
struct it8172_state *s;
|
|
int ret;
|
|
|
|
#ifdef IT8172_VERBOSE_DEBUG
|
|
if (file->f_flags & O_NONBLOCK)
|
|
dbg("%s: non-blocking", __FUNCTION__);
|
|
else
|
|
dbg("%s: blocking", __FUNCTION__);
|
|
#endif
|
|
|
|
for (list = devs.next; ; list = list->next) {
|
|
if (list == &devs)
|
|
return -ENODEV;
|
|
s = list_entry(list, struct it8172_state, devs);
|
|
if (!((s->dev_audio ^ minor) & ~0xf))
|
|
break;
|
|
}
|
|
file->private_data = s;
|
|
/* wait for device to become free */
|
|
mutex_lock(&s->open_mutex);
|
|
while (s->open_mode & file->f_mode) {
|
|
if (file->f_flags & O_NONBLOCK) {
|
|
mutex_unlock(&s->open_mutex);
|
|
return -EBUSY;
|
|
}
|
|
add_wait_queue(&s->open_wait, &wait);
|
|
__set_current_state(TASK_INTERRUPTIBLE);
|
|
mutex_unlock(&s->open_mutex);
|
|
schedule();
|
|
remove_wait_queue(&s->open_wait, &wait);
|
|
set_current_state(TASK_RUNNING);
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
mutex_lock(&s->open_mutex);
|
|
}
|
|
|
|
spin_lock_irqsave(&s->lock, flags);
|
|
|
|
if (file->f_mode & FMODE_READ) {
|
|
s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
|
|
s->dma_adc.subdivision = s->dma_adc.total_bytes = 0;
|
|
s->capcc &= ~(CC_SM | CC_DF);
|
|
set_adc_rate(s, 8000);
|
|
if ((minor & 0xf) == SND_DEV_DSP16)
|
|
s->capcc |= CC_DF;
|
|
outw(s->capcc, s->io+IT_AC_CAPCC);
|
|
if ((ret = prog_dmabuf_adc(s))) {
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
return ret;
|
|
}
|
|
}
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
|
|
s->dma_dac.subdivision = s->dma_dac.total_bytes = 0;
|
|
s->pcc &= ~(CC_SM | CC_DF);
|
|
set_dac_rate(s, 8000);
|
|
if ((minor & 0xf) == SND_DEV_DSP16)
|
|
s->pcc |= CC_DF;
|
|
outw(s->pcc, s->io+IT_AC_PCC);
|
|
if ((ret = prog_dmabuf_dac(s))) {
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&s->lock, flags);
|
|
|
|
s->open_mode |= (file->f_mode & (FMODE_READ | FMODE_WRITE));
|
|
mutex_unlock(&s->open_mutex);
|
|
return nonseekable_open(inode, file);
|
|
}
|
|
|
|
static int it8172_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct it8172_state *s = (struct it8172_state *)file->private_data;
|
|
|
|
#ifdef IT8172_VERBOSE_DEBUG
|
|
dbg("%s", __FUNCTION__);
|
|
#endif
|
|
lock_kernel();
|
|
if (file->f_mode & FMODE_WRITE)
|
|
drain_dac(s, file->f_flags & O_NONBLOCK);
|
|
mutex_lock(&s->open_mutex);
|
|
if (file->f_mode & FMODE_WRITE) {
|
|
stop_dac(s);
|
|
dealloc_dmabuf(s, &s->dma_dac);
|
|
}
|
|
if (file->f_mode & FMODE_READ) {
|
|
stop_adc(s);
|
|
dealloc_dmabuf(s, &s->dma_adc);
|
|
}
|
|
s->open_mode &= ((~file->f_mode) & (FMODE_READ|FMODE_WRITE));
|
|
mutex_unlock(&s->open_mutex);
|
|
wake_up(&s->open_wait);
|
|
unlock_kernel();
|
|
return 0;
|
|
}
|
|
|
|
static /*const*/ struct file_operations it8172_audio_fops = {
|
|
.owner = THIS_MODULE,
|
|
.llseek = no_llseek,
|
|
.read = it8172_read,
|
|
.write = it8172_write,
|
|
.poll = it8172_poll,
|
|
.ioctl = it8172_ioctl,
|
|
.mmap = it8172_mmap,
|
|
.open = it8172_open,
|
|
.release = it8172_release,
|
|
};
|
|
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* for debugging purposes, we'll create a proc device that dumps the
|
|
* CODEC chipstate
|
|
*/
|
|
|
|
#ifdef IT8172_DEBUG
|
|
static int proc_it8172_dump (char *buf, char **start, off_t fpos,
|
|
int length, int *eof, void *data)
|
|
{
|
|
struct it8172_state *s;
|
|
int cnt, len = 0;
|
|
|
|
if (list_empty(&devs))
|
|
return 0;
|
|
s = list_entry(devs.next, struct it8172_state, devs);
|
|
|
|
/* print out header */
|
|
len += sprintf(buf + len, "\n\t\tIT8172 Audio Debug\n\n");
|
|
|
|
// print out digital controller state
|
|
len += sprintf (buf + len, "IT8172 Audio Controller registers\n");
|
|
len += sprintf (buf + len, "---------------------------------\n");
|
|
cnt=0;
|
|
while (cnt < 0x72) {
|
|
if (cnt == IT_AC_PCB1STA || cnt == IT_AC_PCB2STA ||
|
|
cnt == IT_AC_CAPB1STA || cnt == IT_AC_CAPB2STA ||
|
|
cnt == IT_AC_PFDP) {
|
|
len+= sprintf (buf + len, "reg %02x = %08x\n",
|
|
cnt, inl(s->io+cnt));
|
|
cnt += 4;
|
|
} else {
|
|
len+= sprintf (buf + len, "reg %02x = %04x\n",
|
|
cnt, inw(s->io+cnt));
|
|
cnt += 2;
|
|
}
|
|
}
|
|
|
|
/* print out CODEC state */
|
|
len += sprintf (buf + len, "\nAC97 CODEC registers\n");
|
|
len += sprintf (buf + len, "----------------------\n");
|
|
for (cnt=0; cnt <= 0x7e; cnt = cnt +2)
|
|
len+= sprintf (buf + len, "reg %02x = %04x\n",
|
|
cnt, rdcodec(&s->codec, cnt));
|
|
|
|
if (fpos >=len){
|
|
*start = buf;
|
|
*eof =1;
|
|
return 0;
|
|
}
|
|
*start = buf + fpos;
|
|
if ((len -= fpos) > length)
|
|
return length;
|
|
*eof =1;
|
|
return len;
|
|
|
|
}
|
|
#endif /* IT8172_DEBUG */
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
/* maximum number of devices; only used for command line params */
|
|
#define NR_DEVICE 5
|
|
|
|
static int spdif[NR_DEVICE];
|
|
static int i2s_fmt[NR_DEVICE];
|
|
|
|
static unsigned int devindex;
|
|
|
|
module_param_array(spdif, int, NULL, 0);
|
|
MODULE_PARM_DESC(spdif, "if 1 the S/PDIF digital output is enabled");
|
|
module_param_array(i2s_fmt, int, NULL, 0);
|
|
MODULE_PARM_DESC(i2s_fmt, "the format of I2S");
|
|
|
|
MODULE_AUTHOR("Monta Vista Software, stevel@mvista.com");
|
|
MODULE_DESCRIPTION("IT8172 Audio Driver");
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
static int __devinit it8172_probe(struct pci_dev *pcidev,
|
|
const struct pci_device_id *pciid)
|
|
{
|
|
struct it8172_state *s;
|
|
int i, val;
|
|
unsigned short pcisr, vol;
|
|
unsigned char legacy, imc;
|
|
char proc_str[80];
|
|
|
|
if (pcidev->irq == 0)
|
|
return -1;
|
|
|
|
if (!(s = kmalloc(sizeof(struct it8172_state), GFP_KERNEL))) {
|
|
err("alloc of device struct failed");
|
|
return -1;
|
|
}
|
|
|
|
memset(s, 0, sizeof(struct it8172_state));
|
|
init_waitqueue_head(&s->dma_adc.wait);
|
|
init_waitqueue_head(&s->dma_dac.wait);
|
|
init_waitqueue_head(&s->open_wait);
|
|
mutex_init(&s->open_mutex);
|
|
spin_lock_init(&s->lock);
|
|
s->dev = pcidev;
|
|
s->io = pci_resource_start(pcidev, 0);
|
|
s->irq = pcidev->irq;
|
|
s->vendor = pcidev->vendor;
|
|
s->device = pcidev->device;
|
|
pci_read_config_byte(pcidev, PCI_REVISION_ID, &s->rev);
|
|
s->codec.private_data = s;
|
|
s->codec.id = 0;
|
|
s->codec.codec_read = rdcodec;
|
|
s->codec.codec_write = wrcodec;
|
|
s->codec.codec_wait = waitcodec;
|
|
|
|
if (!request_region(s->io, pci_resource_len(pcidev,0),
|
|
IT8172_MODULE_NAME)) {
|
|
err("io ports %#lx->%#lx in use",
|
|
s->io, s->io + pci_resource_len(pcidev,0)-1);
|
|
goto err_region;
|
|
}
|
|
if (request_irq(s->irq, it8172_interrupt, IRQF_DISABLED,
|
|
IT8172_MODULE_NAME, s)) {
|
|
err("irq %u in use", s->irq);
|
|
goto err_irq;
|
|
}
|
|
|
|
info("IO at %#lx, IRQ %d", s->io, s->irq);
|
|
|
|
/* register devices */
|
|
if ((s->dev_audio = register_sound_dsp(&it8172_audio_fops, -1)) < 0)
|
|
goto err_dev1;
|
|
if ((s->codec.dev_mixer =
|
|
register_sound_mixer(&it8172_mixer_fops, -1)) < 0)
|
|
goto err_dev2;
|
|
|
|
#ifdef IT8172_DEBUG
|
|
/* initialize the debug proc device */
|
|
s->ps = create_proc_read_entry(IT8172_MODULE_NAME, 0, NULL,
|
|
proc_it8172_dump, NULL);
|
|
#endif /* IT8172_DEBUG */
|
|
|
|
/*
|
|
* Reset the Audio device using the IT8172 PCI Reset register. This
|
|
* creates an audible double click on a speaker connected to Line-out.
|
|
*/
|
|
IT_IO_READ16(IT_PM_PCISR, pcisr);
|
|
pcisr |= IT_PM_PCISR_ACSR;
|
|
IT_IO_WRITE16(IT_PM_PCISR, pcisr);
|
|
/* wait up to 100msec for reset to complete */
|
|
for (i=0; pcisr & IT_PM_PCISR_ACSR; i++) {
|
|
it8172_delay(10);
|
|
if (i == 10)
|
|
break;
|
|
IT_IO_READ16(IT_PM_PCISR, pcisr);
|
|
}
|
|
if (i == 10) {
|
|
err("chip reset timeout!");
|
|
goto err_dev3;
|
|
}
|
|
|
|
/* enable pci io and bus mastering */
|
|
if (pci_enable_device(pcidev))
|
|
goto err_dev3;
|
|
pci_set_master(pcidev);
|
|
|
|
/* get out of legacy mode */
|
|
pci_read_config_byte (pcidev, 0x40, &legacy);
|
|
pci_write_config_byte (pcidev, 0x40, legacy & ~1);
|
|
|
|
s->spdif_volume = -1;
|
|
/* check to see if s/pdif mode is being requested */
|
|
if (spdif[devindex]) {
|
|
info("enabling S/PDIF output");
|
|
s->spdif_volume = 0;
|
|
outb(GC_SOE, s->io+IT_AC_GC);
|
|
} else {
|
|
info("disabling S/PDIF output");
|
|
outb(0, s->io+IT_AC_GC);
|
|
}
|
|
|
|
/* check to see if I2S format requested */
|
|
if (i2s_fmt[devindex]) {
|
|
info("setting I2S format to 0x%02x", i2s_fmt[devindex]);
|
|
outb(i2s_fmt[devindex], s->io+IT_AC_I2SMC);
|
|
} else {
|
|
outb(I2SMC_I2SF_I2S, s->io+IT_AC_I2SMC);
|
|
}
|
|
|
|
/* cold reset the AC97 */
|
|
outw(CODECC_CR, s->io+IT_AC_CODECC);
|
|
udelay(1000);
|
|
outw(0, s->io+IT_AC_CODECC);
|
|
/* need to delay around 500msec(bleech) to give
|
|
some CODECs enough time to wakeup */
|
|
it8172_delay(500);
|
|
|
|
/* AC97 warm reset to start the bitclk */
|
|
outw(CODECC_WR, s->io+IT_AC_CODECC);
|
|
udelay(1000);
|
|
outw(0, s->io+IT_AC_CODECC);
|
|
|
|
/* codec init */
|
|
if (!ac97_probe_codec(&s->codec))
|
|
goto err_dev3;
|
|
|
|
/* add I2S as allowable recording source */
|
|
s->codec.record_sources |= SOUND_MASK_I2S;
|
|
|
|
/* Enable Volume button interrupts */
|
|
imc = inb(s->io+IT_AC_IMC);
|
|
outb(imc & ~IMC_VCIM, s->io+IT_AC_IMC);
|
|
|
|
/* Un-mute PCM and FM out on the controller */
|
|
vol = inw(s->io+IT_AC_PCMOV);
|
|
outw(vol & ~PCMOV_PCMOM, s->io+IT_AC_PCMOV);
|
|
vol = inw(s->io+IT_AC_FMOV);
|
|
outw(vol & ~FMOV_FMOM, s->io+IT_AC_FMOV);
|
|
|
|
/* set channel defaults to 8-bit, mono, 8 Khz */
|
|
s->pcc = 0;
|
|
s->capcc = 0;
|
|
set_dac_rate(s, 8000);
|
|
set_adc_rate(s, 8000);
|
|
|
|
/* set mic to be the recording source */
|
|
val = SOUND_MASK_MIC;
|
|
mixdev_ioctl(&s->codec, SOUND_MIXER_WRITE_RECSRC,
|
|
(unsigned long)&val);
|
|
|
|
/* mute AC'97 master and PCM when in S/PDIF mode */
|
|
if (s->spdif_volume != -1) {
|
|
val = 0x0000;
|
|
s->codec.mixer_ioctl(&s->codec, SOUND_MIXER_WRITE_VOLUME,
|
|
(unsigned long)&val);
|
|
s->codec.mixer_ioctl(&s->codec, SOUND_MIXER_WRITE_PCM,
|
|
(unsigned long)&val);
|
|
}
|
|
|
|
#ifdef IT8172_DEBUG
|
|
sprintf(proc_str, "driver/%s/%d/ac97", IT8172_MODULE_NAME,
|
|
s->codec.id);
|
|
s->ac97_ps = create_proc_read_entry (proc_str, 0, NULL,
|
|
ac97_read_proc, &s->codec);
|
|
#endif
|
|
|
|
/* store it in the driver field */
|
|
pci_set_drvdata(pcidev, s);
|
|
pcidev->dma_mask = 0xffffffff;
|
|
/* put it into driver list */
|
|
list_add_tail(&s->devs, &devs);
|
|
/* increment devindex */
|
|
if (devindex < NR_DEVICE-1)
|
|
devindex++;
|
|
return 0;
|
|
|
|
err_dev3:
|
|
unregister_sound_mixer(s->codec.dev_mixer);
|
|
err_dev2:
|
|
unregister_sound_dsp(s->dev_audio);
|
|
err_dev1:
|
|
err("cannot register misc device");
|
|
free_irq(s->irq, s);
|
|
err_irq:
|
|
release_region(s->io, pci_resource_len(pcidev,0));
|
|
err_region:
|
|
kfree(s);
|
|
return -1;
|
|
}
|
|
|
|
static void __devexit it8172_remove(struct pci_dev *dev)
|
|
{
|
|
struct it8172_state *s = pci_get_drvdata(dev);
|
|
|
|
if (!s)
|
|
return;
|
|
list_del(&s->devs);
|
|
#ifdef IT8172_DEBUG
|
|
if (s->ps)
|
|
remove_proc_entry(IT8172_MODULE_NAME, NULL);
|
|
#endif /* IT8172_DEBUG */
|
|
synchronize_irq(s->irq);
|
|
free_irq(s->irq, s);
|
|
release_region(s->io, pci_resource_len(dev,0));
|
|
unregister_sound_dsp(s->dev_audio);
|
|
unregister_sound_mixer(s->codec.dev_mixer);
|
|
kfree(s);
|
|
pci_set_drvdata(dev, NULL);
|
|
}
|
|
|
|
|
|
|
|
static struct pci_device_id id_table[] = {
|
|
{ PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_IT8172G_AUDIO, PCI_ANY_ID,
|
|
PCI_ANY_ID, 0, 0 },
|
|
{ 0, }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, id_table);
|
|
|
|
static struct pci_driver it8172_driver = {
|
|
.name = IT8172_MODULE_NAME,
|
|
.id_table = id_table,
|
|
.probe = it8172_probe,
|
|
.remove = __devexit_p(it8172_remove)
|
|
};
|
|
|
|
static int __init init_it8172(void)
|
|
{
|
|
info("version v0.5 time " __TIME__ " " __DATE__);
|
|
return pci_register_driver(&it8172_driver);
|
|
}
|
|
|
|
static void __exit cleanup_it8172(void)
|
|
{
|
|
info("unloading");
|
|
pci_unregister_driver(&it8172_driver);
|
|
}
|
|
|
|
module_init(init_it8172);
|
|
module_exit(cleanup_it8172);
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
#ifndef MODULE
|
|
|
|
/* format is: it8172=[spdif],[i2s:<I2S format>] */
|
|
|
|
static int __init it8172_setup(char *options)
|
|
{
|
|
char* this_opt;
|
|
static unsigned __initdata nr_dev = 0;
|
|
|
|
if (nr_dev >= NR_DEVICE)
|
|
return 0;
|
|
|
|
if (!options || !*options)
|
|
return 0;
|
|
|
|
while (this_opt = strsep(&options, ",")) {
|
|
if (!*this_opt)
|
|
continue;
|
|
if (!strncmp(this_opt, "spdif", 5)) {
|
|
spdif[nr_dev] = 1;
|
|
} else if (!strncmp(this_opt, "i2s:", 4)) {
|
|
if (!strncmp(this_opt+4, "dac", 3))
|
|
i2s_fmt[nr_dev] = I2SMC_I2SF_DAC;
|
|
else if (!strncmp(this_opt+4, "adc", 3))
|
|
i2s_fmt[nr_dev] = I2SMC_I2SF_ADC;
|
|
else if (!strncmp(this_opt+4, "i2s", 3))
|
|
i2s_fmt[nr_dev] = I2SMC_I2SF_I2S;
|
|
}
|
|
}
|
|
|
|
nr_dev++;
|
|
return 1;
|
|
}
|
|
|
|
__setup("it8172=", it8172_setup);
|
|
|
|
#endif /* MODULE */
|