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authorLinus Torvalds2005-04-17 00:20:36 +0200
committerLinus Torvalds2005-04-17 00:20:36 +0200
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/oss/trident.c
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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!
Diffstat (limited to 'sound/oss/trident.c')
-rw-r--r--sound/oss/trident.c4628
1 files changed, 4628 insertions, 0 deletions
diff --git a/sound/oss/trident.c b/sound/oss/trident.c
new file mode 100644
index 000000000000..47537f0a5b05
--- /dev/null
+++ b/sound/oss/trident.c
@@ -0,0 +1,4628 @@
+/*
+ * OSS driver for Linux 2.[46].x for
+ *
+ * Trident 4D-Wave
+ * SiS 7018
+ * ALi 5451
+ * Tvia/IGST CyberPro 5050
+ *
+ * Driver: Alan Cox <alan@redhat.com>
+ *
+ * Built from:
+ * Low level code: <audio@tridentmicro.com> from ALSA
+ * Framework: Thomas Sailer <sailer@ife.ee.ethz.ch>
+ * Extended by: Zach Brown <zab@redhat.com>
+ *
+ * Hacked up by:
+ * Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ * Ollie Lho <ollie@sis.com.tw> SiS 7018 Audio Core Support
+ * Ching-Ling Lee <cling-li@ali.com.tw> ALi 5451 Audio Core Support
+ * Matt Wu <mattwu@acersoftech.com.cn> ALi 5451 Audio Core Support
+ * Peter Wächtler <pwaechtler@loewe-komp.de> CyberPro5050 support
+ * Muli Ben-Yehuda <mulix@mulix.org>
+ *
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * History
+ * v0.14.10j
+ * January 3 2004 Eugene Teo <eugeneteo@eugeneteo.net>
+ * minor cleanup to use pr_debug instead of TRDBG since it is already
+ * defined in linux/kernel.h.
+ * v0.14.10i
+ * December 29 2003 Muli Ben-Yehuda <mulix@mulix.org>
+ * major cleanup for 2.6, fix a few error patch buglets
+ * with returning without properly cleaning up first,
+ * get rid of lock_kernel().
+ * v0.14.10h
+ * Sept 10 2002 Pascal Schmidt <der.eremit@email.de>
+ * added support for ALi 5451 joystick port
+ * v0.14.10g
+ * Sept 05 2002 Alan Cox <alan@redhat.com>
+ * adapt to new pci joystick attachment interface
+ * v0.14.10f
+ * July 24 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
+ * patch from Eric Lemar (via Ian Soboroff): in suspend and resume,
+ * fix wrong cast from pci_dev* to struct trident_card*.
+ * v0.14.10e
+ * July 19 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
+ * rewrite the DMA buffer allocation/deallcoation functions, to make it
+ * modular and fix a bug where we would call free_pages on memory
+ * obtained with pci_alloc_consistent. Also remove unnecessary #ifdef
+ * CONFIG_PROC_FS and various other cleanups.
+ * v0.14.10d
+ * July 19 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
+ * made several printk(KERN_NOTICE...) into TRDBG(...), to avoid spamming
+ * my syslog with hundreds of messages.
+ * v0.14.10c
+ * July 16 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
+ * Cleaned up Lei Hu's 0.4.10 driver to conform to Documentation/CodingStyle
+ * and the coding style used in the rest of the file.
+ * v0.14.10b
+ * June 23 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
+ * add a missing unlock_set_fmt, remove a superflous lock/unlock pair
+ * with nothing in between.
+ * v0.14.10a
+ * June 21 2002 Muli Ben-Yehuda <mulix@actcom.co.il>
+ * use a debug macro instead of #ifdef CONFIG_DEBUG, trim to 80 columns
+ * per line, use 'do {} while (0)' in statement macros.
+ * v0.14.10
+ * June 6 2002 Lei Hu <Lei_hu@ali.com.tw>
+ * rewrite the part to read/write registers of audio codec for Ali5451
+ * v0.14.9e
+ * January 2 2002 Vojtech Pavlik <vojtech@ucw.cz> added gameport
+ * support to avoid resource conflict with pcigame.c
+ * v0.14.9d
+ * October 8 2001 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ * use set_current_state, properly release resources on failure in
+ * trident_probe, get rid of check_region
+ * v0.14.9c
+ * August 10 2001 Peter Wächtler <pwaechtler@loewe-komp.de>
+ * added support for Tvia (formerly Integraphics/IGST) CyberPro5050
+ * this chip is often found in settop boxes (combined video+audio)
+ * v0.14.9b
+ * Switch to static inline not extern inline (gcc 3)
+ * v0.14.9a
+ * Aug 6 2001 Alan Cox
+ * 0.14.9 crashed on rmmod due to a timer/bh left running. Simplified
+ * the existing logic (the BH doesn't help as ac97 is lock_irqsave)
+ * and used del_timer_sync to clean up
+ * Fixed a problem where the ALi change broke my generic card
+ * v0.14.9
+ * Jul 10 2001 Matt Wu
+ * Add H/W Volume Control
+ * v0.14.8a
+ * July 7 2001 Alan Cox
+ * Moved Matt Wu's ac97 register cache into the card structure
+ * v0.14.8
+ * Apr 30 2001 Matt Wu
+ * Set EBUF1 and EBUF2 to still mode
+ * Add dc97/ac97 reset function
+ * Fix power management: ali_restore_regs
+ * unreleased
+ * Mar 09 2001 Matt Wu
+ * Add cache for ac97 access
+ * v0.14.7
+ * Feb 06 2001 Matt Wu
+ * Fix ac97 initialization
+ * Fix bug: an extra tail will be played when playing
+ * Jan 05 2001 Matt Wu
+ * Implement multi-channels and S/PDIF in support for ALi 1535+
+ * v0.14.6
+ * Nov 1 2000 Ching-Ling Lee
+ * Fix the bug of memory leak when switching 5.1-channels to 2 channels.
+ * Add lock protection into dynamic changing format of data.
+ * Oct 18 2000 Ching-Ling Lee
+ * 5.1-channels support for ALi
+ * June 28 2000 Ching-Ling Lee
+ * S/PDIF out/in(playback/record) support for ALi 1535+, using /proc to be selected by user
+ * Simple Power Management support for ALi
+ * v0.14.5 May 23 2000 Ollie Lho
+ * Misc bug fix from the Net
+ * v0.14.4 May 20 2000 Aaron Holtzman
+ * Fix kfree'd memory access in release
+ * Fix race in open while looking for a free virtual channel slot
+ * remove open_wait wq (which appears to be unused)
+ * v0.14.3 May 10 2000 Ollie Lho
+ * fixed a small bug in trident_update_ptr, xmms 1.0.1 no longer uses 100% CPU
+ * v0.14.2 Mar 29 2000 Ching-Ling Lee
+ * Add clear to silence advance in trident_update_ptr
+ * fix invalid data of the end of the sound
+ * v0.14.1 Mar 24 2000 Ching-Ling Lee
+ * ALi 5451 support added, playback and recording O.K.
+ * ALi 5451 originally developed and structured based on sonicvibes, and
+ * suggested to merge into this file by Alan Cox.
+ * v0.14 Mar 15 2000 Ollie Lho
+ * 5.1 channel output support with channel binding. What's the Matrix ?
+ * v0.13.1 Mar 10 2000 Ollie Lho
+ * few minor bugs on dual codec support, needs more testing
+ * v0.13 Mar 03 2000 Ollie Lho
+ * new pci_* for 2.4 kernel, back ported to 2.2
+ * v0.12 Feb 23 2000 Ollie Lho
+ * Preliminary Recording support
+ * v0.11.2 Feb 19 2000 Ollie Lho
+ * removed incomplete full-dulplex support
+ * v0.11.1 Jan 28 2000 Ollie Lho
+ * small bug in setting sample rate for 4d-nx (reported by Aaron)
+ * v0.11 Jan 27 2000 Ollie Lho
+ * DMA bug, scheduler latency, second try
+ * v0.10 Jan 24 2000 Ollie Lho
+ * DMA bug fixed, found kernel scheduling problem
+ * v0.09 Jan 20 2000 Ollie Lho
+ * Clean up of channel register access routine (prepare for channel binding)
+ * v0.08 Jan 14 2000 Ollie Lho
+ * Isolation of AC97 codec code
+ * v0.07 Jan 13 2000 Ollie Lho
+ * Get rid of ugly old low level access routines (e.g. CHRegs.lp****)
+ * v0.06 Jan 11 2000 Ollie Lho
+ * Preliminary support for dual (more ?) AC97 codecs
+ * v0.05 Jan 08 2000 Luca Montecchiani <m.luca@iname.com>
+ * adapt to 2.3.x new __setup/__init call
+ * v0.04 Dec 31 1999 Ollie Lho
+ * Multiple Open, using Middle Loop Interrupt to smooth playback
+ * v0.03 Dec 24 1999 Ollie Lho
+ * mem leak in prog_dmabuf and dealloc_dmabuf removed
+ * v0.02 Dec 15 1999 Ollie Lho
+ * SiS 7018 support added, playback O.K.
+ * v0.01 Alan Cox et. al.
+ * Initial Release in kernel 2.3.30, does not work
+ *
+ * ToDo
+ * Clean up of low level channel register access code. (done)
+ * Fix the bug on dma buffer management in update_ptr, read/write, drain_dac (done)
+ * Dual AC97 codecs support (done)
+ * Recording support (done)
+ * Mmap support
+ * "Channel Binding" ioctl extension (done)
+ * new pci device driver interface for 2.4 kernel (done)
+ *
+ * Lock order (high->low)
+ * lock - hardware lock
+ * open_sem - guard opens
+ * sem - guard dmabuf, write re-entry etc
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/sound.h>
+#include <linux/slab.h>
+#include <linux/soundcard.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <linux/smp_lock.h>
+#include <linux/ac97_codec.h>
+#include <linux/bitops.h>
+#include <linux/proc_fs.h>
+#include <linux/interrupt.h>
+#include <linux/pm.h>
+#include <linux/gameport.h>
+#include <linux/kernel.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#if defined(CONFIG_ALPHA_NAUTILUS) || defined(CONFIG_ALPHA_GENERIC)
+#include <asm/hwrpb.h>
+#endif
+
+#include "trident.h"
+
+#define DRIVER_VERSION "0.14.10j-2.6"
+
+/* magic numbers to protect our data structures */
+#define TRIDENT_CARD_MAGIC 0x5072696E /* "Prin" */
+#define TRIDENT_STATE_MAGIC 0x63657373 /* "cess" */
+
+#define TRIDENT_DMA_MASK 0x3fffffff /* DMA buffer mask for pci_alloc_consist */
+#define ALI_DMA_MASK 0x7fffffff /* ALI Tridents have 31-bit DMA. Wow. */
+
+#define NR_HW_CH 32
+
+/* maximum number of AC97 codecs connected, AC97 2.0 defined 4, but 7018 and 4D-NX only
+ have 2 SDATA_IN lines (currently) */
+#define NR_AC97 2
+
+/* minor number of /dev/swmodem (temporary, experimental) */
+#define SND_DEV_SWMODEM 7
+
+static const unsigned ali_multi_channels_5_1[] = {
+ /*ALI_SURR_LEFT_CHANNEL, ALI_SURR_RIGHT_CHANNEL, */
+ ALI_CENTER_CHANNEL,
+ ALI_LEF_CHANNEL,
+ ALI_SURR_LEFT_CHANNEL,
+ ALI_SURR_RIGHT_CHANNEL
+};
+
+static const unsigned sample_size[] = { 1, 2, 2, 4 };
+static const unsigned sample_shift[] = { 0, 1, 1, 2 };
+
+static const char invalid_magic[] = KERN_CRIT "trident: invalid magic value in %s\n";
+
+enum {
+ TRIDENT_4D_DX = 0,
+ TRIDENT_4D_NX,
+ SIS_7018,
+ ALI_5451,
+ CYBER5050
+};
+
+static char *card_names[] = {
+ "Trident 4DWave DX",
+ "Trident 4DWave NX",
+ "SiS 7018 PCI Audio",
+ "ALi Audio Accelerator",
+ "Tvia/IGST CyberPro 5050"
+};
+
+static struct pci_device_id trident_pci_tbl[] = {
+ {PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_TRIDENT_4DWAVE_DX,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, TRIDENT_4D_DX},
+ {PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_TRIDENT_4DWAVE_NX,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, TRIDENT_4D_NX},
+ {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7018,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7018},
+ {PCI_VENDOR_ID_ALI, PCI_DEVICE_ID_ALI_5451,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, ALI_5451},
+ {PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_5050,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, CYBER5050},
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, trident_pci_tbl);
+
+/* "software" or virtual channel, an instance of opened /dev/dsp */
+struct trident_state {
+ unsigned int magic;
+ struct trident_card *card; /* Card info */
+
+ /* file mode */
+ mode_t open_mode;
+
+ /* virtual channel number */
+ int virt;
+
+ struct dmabuf {
+ /* wave sample stuff */
+ unsigned int rate;
+ unsigned char fmt, enable;
+
+ /* hardware channel */
+ struct trident_channel *channel;
+
+ /* OSS buffer management stuff */
+ void *rawbuf;
+ dma_addr_t dma_handle;
+ unsigned buforder;
+ unsigned numfrag;
+ unsigned fragshift;
+
+ /* our buffer acts like a circular ring */
+ unsigned hwptr; /* where dma last started, updated by update_ptr */
+ unsigned swptr; /* where driver last clear/filled, updated by read/write */
+ int count; /* bytes to be comsumed or been generated by dma machine */
+ unsigned total_bytes; /* total bytes dmaed by hardware */
+
+ unsigned error; /* number of over/underruns */
+ /* put process on wait queue when no more space in buffer */
+ wait_queue_head_t wait;
+
+ /* redundant, but makes calculations easier */
+ unsigned fragsize;
+ unsigned dmasize;
+ unsigned fragsamples;
+
+ /* OSS stuff */
+ unsigned mapped:1;
+ unsigned ready:1;
+ unsigned endcleared:1;
+ unsigned update_flag;
+ unsigned ossfragshift;
+ int ossmaxfrags;
+ unsigned subdivision;
+
+ } dmabuf;
+
+ /* 5.1 channels */
+ struct trident_state *other_states[4];
+ int multi_channels_adjust_count;
+ unsigned chans_num;
+ unsigned long fmt_flag;
+ /* Guard against mmap/write/read races */
+ struct semaphore sem;
+
+};
+
+/* hardware channels */
+struct trident_channel {
+ int num; /* channel number */
+ u32 lba; /* Loop Begine Address, where dma buffer starts */
+ u32 eso; /* End Sample Offset, wehre dma buffer ends */
+ /* (in the unit of samples) */
+ u32 delta; /* delta value, sample rate / 48k for playback, */
+ /* 48k/sample rate for recording */
+ u16 attribute; /* control where PCM data go and come */
+ u16 fm_vol;
+ u32 control; /* signed/unsigned, 8/16 bits, mono/stereo */
+};
+
+struct trident_pcm_bank_address {
+ u32 start;
+ u32 stop;
+ u32 aint;
+ u32 aint_en;
+};
+
+static struct trident_pcm_bank_address bank_a_addrs = {
+ T4D_START_A,
+ T4D_STOP_A,
+ T4D_AINT_A,
+ T4D_AINTEN_A
+};
+
+static struct trident_pcm_bank_address bank_b_addrs = {
+ T4D_START_B,
+ T4D_STOP_B,
+ T4D_AINT_B,
+ T4D_AINTEN_B
+};
+
+struct trident_pcm_bank {
+ /* register addresses to control bank operations */
+ struct trident_pcm_bank_address *addresses;
+ /* each bank has 32 channels */
+ u32 bitmap; /* channel allocation bitmap */
+ struct trident_channel channels[32];
+};
+
+struct trident_card {
+ unsigned int magic;
+
+ /* We keep trident cards in a linked list */
+ struct trident_card *next;
+
+ /* single open lock mechanism, only used for recording */
+ struct semaphore open_sem;
+
+ /* The trident has a certain amount of cross channel interaction
+ so we use a single per card lock */
+ spinlock_t lock;
+
+ /* PCI device stuff */
+ struct pci_dev *pci_dev;
+ u16 pci_id;
+ u8 revision;
+
+ /* soundcore stuff */
+ int dev_audio;
+
+ /* structures for abstraction of hardware facilities, codecs, */
+ /* banks and channels */
+ struct ac97_codec *ac97_codec[NR_AC97];
+ struct trident_pcm_bank banks[NR_BANKS];
+ struct trident_state *states[NR_HW_CH];
+
+ /* hardware resources */
+ unsigned long iobase;
+ u32 irq;
+
+ /* Function support */
+ struct trident_channel *(*alloc_pcm_channel) (struct trident_card *);
+ struct trident_channel *(*alloc_rec_pcm_channel) (struct trident_card *);
+ void (*free_pcm_channel) (struct trident_card *, unsigned int chan);
+ void (*address_interrupt) (struct trident_card *);
+
+ /* Added by Matt Wu 01-05-2001 for spdif in */
+ int multi_channel_use_count;
+ int rec_channel_use_count;
+ u16 mixer_regs[64][NR_AC97]; /* Made card local by Alan */
+ int mixer_regs_ready;
+
+ /* Added for hardware volume control */
+ int hwvolctl;
+ struct timer_list timer;
+
+ /* Game port support */
+ struct gameport *gameport;
+};
+
+enum dmabuf_mode {
+ DM_PLAYBACK = 0,
+ DM_RECORD
+};
+
+/* table to map from CHANNELMASK to channel attribute for SiS 7018 */
+static u16 mask2attr[] = {
+ PCM_LR, PCM_LR, SURR_LR, CENTER_LFE,
+ HSET, MIC, MODEM_LINE1, MODEM_LINE2,
+ I2S_LR, SPDIF_LR
+};
+
+/* table to map from channel attribute to CHANNELMASK for SiS 7018 */
+static int attr2mask[] = {
+ DSP_BIND_MODEM1, DSP_BIND_MODEM2, DSP_BIND_FRONT, DSP_BIND_HANDSET,
+ DSP_BIND_I2S, DSP_BIND_CENTER_LFE, DSP_BIND_SURR, DSP_BIND_SPDIF
+};
+
+/* Added by Matt Wu 01-05-2001 for spdif in */
+static int ali_close_multi_channels(void);
+static void ali_delay(struct trident_card *card, int interval);
+static void ali_detect_spdif_rate(struct trident_card *card);
+
+static void ali_ac97_write(struct ac97_codec *codec, u8 reg, u16 val);
+static u16 ali_ac97_read(struct ac97_codec *codec, u8 reg);
+
+static struct trident_card *devs;
+
+static void trident_ac97_set(struct ac97_codec *codec, u8 reg, u16 val);
+static u16 trident_ac97_get(struct ac97_codec *codec, u8 reg);
+
+static int trident_open_mixdev(struct inode *inode, struct file *file);
+static int trident_ioctl_mixdev(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg);
+
+static void ali_ac97_set(struct trident_card *card, int secondary, u8 reg, u16 val);
+static u16 ali_ac97_get(struct trident_card *card, int secondary, u8 reg);
+static void ali_set_spdif_out_rate(struct trident_card *card, unsigned int rate);
+static void ali_enable_special_channel(struct trident_state *stat);
+static struct trident_channel *ali_alloc_rec_pcm_channel(struct trident_card *card);
+static struct trident_channel *ali_alloc_pcm_channel(struct trident_card *card);
+static void ali_restore_regs(struct trident_card *card);
+static void ali_save_regs(struct trident_card *card);
+static int trident_suspend(struct pci_dev *dev, pm_message_t unused);
+static int trident_resume(struct pci_dev *dev);
+static void ali_free_pcm_channel(struct trident_card *card, unsigned int channel);
+static int ali_setup_multi_channels(struct trident_card *card, int chan_nums);
+static unsigned int ali_get_spdif_in_rate(struct trident_card *card);
+static void ali_setup_spdif_in(struct trident_card *card);
+static void ali_disable_spdif_in(struct trident_card *card);
+static void ali_disable_special_channel(struct trident_card *card, int ch);
+static void ali_setup_spdif_out(struct trident_card *card, int flag);
+static int ali_write_5_1(struct trident_state *state,
+ const char __user *buffer,
+ int cnt_for_multi_channel, unsigned int *copy_count,
+ unsigned int *state_cnt);
+static int ali_allocate_other_states_resources(struct trident_state *state,
+ int chan_nums);
+static void ali_free_other_states_resources(struct trident_state *state);
+
+/* save registers for ALi Power Management */
+static struct ali_saved_registers {
+ unsigned long global_regs[ALI_GLOBAL_REGS];
+ unsigned long channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
+ unsigned mixer_regs[ALI_MIXER_REGS];
+} ali_registers;
+
+#define seek_offset(dma_ptr, buffer, cnt, offset, copy_count) do { \
+ (dma_ptr) += (offset); \
+ (buffer) += (offset); \
+ (cnt) -= (offset); \
+ (copy_count) += (offset); \
+} while (0)
+
+static inline int lock_set_fmt(struct trident_state* state)
+{
+ if (test_and_set_bit(0, &state->fmt_flag))
+ return -EFAULT;
+
+ return 0;
+}
+
+static inline void unlock_set_fmt(struct trident_state* state)
+{
+ clear_bit(0, &state->fmt_flag);
+}
+
+static int
+trident_enable_loop_interrupts(struct trident_card *card)
+{
+ u32 global_control;
+
+ global_control = inl(TRID_REG(card, T4D_LFO_GC_CIR));
+
+ switch (card->pci_id) {
+ case PCI_DEVICE_ID_SI_7018:
+ global_control |= (ENDLP_IE | MIDLP_IE | BANK_B_EN);
+ break;
+ case PCI_DEVICE_ID_ALI_5451:
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
+ case PCI_DEVICE_ID_INTERG_5050:
+ global_control |= (ENDLP_IE | MIDLP_IE);
+ break;
+ default:
+ return 0;
+ }
+
+ outl(global_control, TRID_REG(card, T4D_LFO_GC_CIR));
+
+ pr_debug("trident: Enable Loop Interrupts, globctl = 0x%08X\n",
+ inl(TRID_REG(card, T4D_LFO_GC_CIR)));
+
+ return 1;
+}
+
+static int
+trident_disable_loop_interrupts(struct trident_card *card)
+{
+ u32 global_control;
+
+ global_control = inl(TRID_REG(card, T4D_LFO_GC_CIR));
+ global_control &= ~(ENDLP_IE | MIDLP_IE);
+ outl(global_control, TRID_REG(card, T4D_LFO_GC_CIR));
+
+ pr_debug("trident: Disabled Loop Interrupts, globctl = 0x%08X\n",
+ global_control);
+
+ return 1;
+}
+
+static void
+trident_enable_voice_irq(struct trident_card *card, unsigned int channel)
+{
+ unsigned int mask = 1 << (channel & 0x1f);
+ struct trident_pcm_bank *bank = &card->banks[channel >> 5];
+ u32 reg, addr = bank->addresses->aint_en;
+
+ reg = inl(TRID_REG(card, addr));
+ reg |= mask;
+ outl(reg, TRID_REG(card, addr));
+
+#ifdef DEBUG
+ reg = inl(TRID_REG(card, addr));
+ pr_debug("trident: enabled IRQ on channel %d, %s = 0x%08x(addr:%X)\n",
+ channel, addr == T4D_AINTEN_B ? "AINTEN_B" : "AINTEN_A",
+ reg, addr);
+#endif /* DEBUG */
+}
+
+static void
+trident_disable_voice_irq(struct trident_card *card, unsigned int channel)
+{
+ unsigned int mask = 1 << (channel & 0x1f);
+ struct trident_pcm_bank *bank = &card->banks[channel >> 5];
+ u32 reg, addr = bank->addresses->aint_en;
+
+ reg = inl(TRID_REG(card, addr));
+ reg &= ~mask;
+ outl(reg, TRID_REG(card, addr));
+
+ /* Ack the channel in case the interrupt was set before we disable it. */
+ outl(mask, TRID_REG(card, bank->addresses->aint));
+
+#ifdef DEBUG
+ reg = inl(TRID_REG(card, addr));
+ pr_debug("trident: disabled IRQ on channel %d, %s = 0x%08x(addr:%X)\n",
+ channel, addr == T4D_AINTEN_B ? "AINTEN_B" : "AINTEN_A",
+ reg, addr);
+#endif /* DEBUG */
+}
+
+static void
+trident_start_voice(struct trident_card *card, unsigned int channel)
+{
+ unsigned int mask = 1 << (channel & 0x1f);
+ struct trident_pcm_bank *bank = &card->banks[channel >> 5];
+ u32 addr = bank->addresses->start;
+
+#ifdef DEBUG
+ u32 reg;
+#endif /* DEBUG */
+
+ outl(mask, TRID_REG(card, addr));
+
+#ifdef DEBUG
+ reg = inl(TRID_REG(card, addr));
+ pr_debug("trident: start voice on channel %d, %s = 0x%08x(addr:%X)\n",
+ channel, addr == T4D_START_B ? "START_B" : "START_A",
+ reg, addr);
+#endif /* DEBUG */
+}
+
+static void
+trident_stop_voice(struct trident_card *card, unsigned int channel)
+{
+ unsigned int mask = 1 << (channel & 0x1f);
+ struct trident_pcm_bank *bank = &card->banks[channel >> 5];
+ u32 addr = bank->addresses->stop;
+
+#ifdef DEBUG
+ u32 reg;
+#endif /* DEBUG */
+
+ outl(mask, TRID_REG(card, addr));
+
+#ifdef DEBUG
+ reg = inl(TRID_REG(card, addr));
+ pr_debug("trident: stop voice on channel %d, %s = 0x%08x(addr:%X)\n",
+ channel, addr == T4D_STOP_B ? "STOP_B" : "STOP_A",
+ reg, addr);
+#endif /* DEBUG */
+}
+
+static u32
+trident_get_interrupt_mask(struct trident_card *card, unsigned int channel)
+{
+ struct trident_pcm_bank *bank = &card->banks[channel];
+ u32 addr = bank->addresses->aint;
+ return inl(TRID_REG(card, addr));
+}
+
+static int
+trident_check_channel_interrupt(struct trident_card *card, unsigned int channel)
+{
+ unsigned int mask = 1 << (channel & 0x1f);
+ u32 reg = trident_get_interrupt_mask(card, channel >> 5);
+
+#ifdef DEBUG
+ if (reg & mask)
+ pr_debug("trident: channel %d has interrupt, %s = 0x%08x\n",
+ channel, reg == T4D_AINT_B ? "AINT_B" : "AINT_A",
+ reg);
+#endif /* DEBUG */
+ return (reg & mask) ? 1 : 0;
+}
+
+static void
+trident_ack_channel_interrupt(struct trident_card *card, unsigned int channel)
+{
+ unsigned int mask = 1 << (channel & 0x1f);
+ struct trident_pcm_bank *bank = &card->banks[channel >> 5];
+ u32 reg, addr = bank->addresses->aint;
+
+ reg = inl(TRID_REG(card, addr));
+ reg &= mask;
+ outl(reg, TRID_REG(card, addr));
+
+#ifdef DEBUG
+ reg = inl(TRID_REG(card, T4D_AINT_B));
+ pr_debug("trident: Ack channel %d interrupt, AINT_B = 0x%08x\n",
+ channel, reg);
+#endif /* DEBUG */
+}
+
+static struct trident_channel *
+trident_alloc_pcm_channel(struct trident_card *card)
+{
+ struct trident_pcm_bank *bank;
+ int idx;
+
+ bank = &card->banks[BANK_B];
+
+ for (idx = 31; idx >= 0; idx--) {
+ if (!(bank->bitmap & (1 << idx))) {
+ struct trident_channel *channel = &bank->channels[idx];
+ bank->bitmap |= 1 << idx;
+ channel->num = idx + 32;
+ return channel;
+ }
+ }
+
+ /* no more free channels available */
+ printk(KERN_ERR "trident: no more channels available on Bank B.\n");
+ return NULL;
+}
+
+static void
+trident_free_pcm_channel(struct trident_card *card, unsigned int channel)
+{
+ int bank;
+ unsigned char b;
+
+ if (channel < 31 || channel > 63)
+ return;
+
+ if (card->pci_id == PCI_DEVICE_ID_TRIDENT_4DWAVE_DX ||
+ card->pci_id == PCI_DEVICE_ID_TRIDENT_4DWAVE_NX) {
+ b = inb(TRID_REG(card, T4D_REC_CH));
+ if ((b & ~0x80) == channel)
+ outb(0x0, TRID_REG(card, T4D_REC_CH));
+ }
+
+ bank = channel >> 5;
+ channel = channel & 0x1f;
+
+ card->banks[bank].bitmap &= ~(1 << (channel));
+}
+
+static struct trident_channel *
+cyber_alloc_pcm_channel(struct trident_card *card)
+{
+ struct trident_pcm_bank *bank;
+ int idx;
+
+ /* The cyberpro 5050 has only 32 voices and one bank */
+ /* .. at least they are not documented (if you want to call that
+ * crap documentation), perhaps broken ? */
+
+ bank = &card->banks[BANK_A];
+
+ for (idx = 31; idx >= 0; idx--) {
+ if (!(bank->bitmap & (1 << idx))) {
+ struct trident_channel *channel = &bank->channels[idx];
+ bank->bitmap |= 1 << idx;
+ channel->num = idx;
+ return channel;
+ }
+ }
+
+ /* no more free channels available */
+ printk(KERN_ERR "cyberpro5050: no more channels available on Bank A.\n");
+ return NULL;
+}
+
+static void
+cyber_free_pcm_channel(struct trident_card *card, unsigned int channel)
+{
+ if (channel > 31)
+ return;
+ card->banks[BANK_A].bitmap &= ~(1 << (channel));
+}
+
+static inline void
+cyber_outidx(int port, int idx, int data)
+{
+ outb(idx, port);
+ outb(data, port + 1);
+}
+
+static inline int
+cyber_inidx(int port, int idx)
+{
+ outb(idx, port);
+ return inb(port + 1);
+}
+
+static int
+cyber_init_ritual(struct trident_card *card)
+{
+ /* some black magic, taken from SDK samples */
+ /* remove this and nothing will work */
+ int portDat;
+ int ret = 0;
+ unsigned long flags;
+
+ /*
+ * Keep interrupts off for the configure - we don't want to
+ * clash with another cyberpro config event
+ */
+
+ spin_lock_irqsave(&card->lock, flags);
+ portDat = cyber_inidx(CYBER_PORT_AUDIO, CYBER_IDX_AUDIO_ENABLE);
+ /* enable, if it was disabled */
+ if ((portDat & CYBER_BMSK_AUENZ) != CYBER_BMSK_AUENZ_ENABLE) {
+ printk(KERN_INFO "cyberpro5050: enabling audio controller\n");
+ cyber_outidx(CYBER_PORT_AUDIO, CYBER_IDX_AUDIO_ENABLE,
+ portDat | CYBER_BMSK_AUENZ_ENABLE);
+ /* check again if hardware is enabled now */
+ portDat = cyber_inidx(CYBER_PORT_AUDIO, CYBER_IDX_AUDIO_ENABLE);
+ }
+ if ((portDat & CYBER_BMSK_AUENZ) != CYBER_BMSK_AUENZ_ENABLE) {
+ printk(KERN_ERR "cyberpro5050: initAudioAccess: no success\n");
+ ret = -1;
+ } else {
+ cyber_outidx(CYBER_PORT_AUDIO, CYBER_IDX_IRQ_ENABLE,
+ CYBER_BMSK_AUDIO_INT_ENABLE);
+ cyber_outidx(CYBER_PORT_AUDIO, 0xbf, 0x01);
+ cyber_outidx(CYBER_PORT_AUDIO, 0xba, 0x20);
+ cyber_outidx(CYBER_PORT_AUDIO, 0xbb, 0x08);
+ cyber_outidx(CYBER_PORT_AUDIO, 0xbf, 0x02);
+ cyber_outidx(CYBER_PORT_AUDIO, 0xb3, 0x06);
+ cyber_outidx(CYBER_PORT_AUDIO, 0xbf, 0x00);
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+ return ret;
+}
+
+/* called with spin lock held */
+
+static int
+trident_load_channel_registers(struct trident_card *card, u32 * data,
+ unsigned int channel)
+{
+ int i;
+
+ if (channel > 63)
+ return 0;
+
+ /* select hardware channel to write */
+ outb(channel, TRID_REG(card, T4D_LFO_GC_CIR));
+
+ /* Output the channel registers, but don't write register
+ three to an ALI chip. */
+ for (i = 0; i < CHANNEL_REGS; i++) {
+ if (i == 3 && card->pci_id == PCI_DEVICE_ID_ALI_5451)
+ continue;
+ outl(data[i], TRID_REG(card, CHANNEL_START + 4 * i));
+ }
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451 ||
+ card->pci_id == PCI_DEVICE_ID_INTERG_5050) {
+ outl(ALI_EMOD_Still, TRID_REG(card, ALI_EBUF1));
+ outl(ALI_EMOD_Still, TRID_REG(card, ALI_EBUF2));
+ }
+ return 1;
+}
+
+/* called with spin lock held */
+static int
+trident_write_voice_regs(struct trident_state *state)
+{
+ unsigned int data[CHANNEL_REGS + 1];
+ struct trident_channel *channel;
+
+ channel = state->dmabuf.channel;
+
+ data[1] = channel->lba;
+ data[4] = channel->control;
+
+ switch (state->card->pci_id) {
+ case PCI_DEVICE_ID_ALI_5451:
+ data[0] = 0; /* Current Sample Offset */
+ data[2] = (channel->eso << 16) | (channel->delta & 0xffff);
+ data[3] = 0;
+ break;
+ case PCI_DEVICE_ID_SI_7018:
+ case PCI_DEVICE_ID_INTERG_5050:
+ data[0] = 0; /* Current Sample Offset */
+ data[2] = (channel->eso << 16) | (channel->delta & 0xffff);
+ data[3] = (channel->attribute << 16) | (channel->fm_vol & 0xffff);
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
+ data[0] = 0; /* Current Sample Offset */
+ data[2] = (channel->eso << 16) | (channel->delta & 0xffff);
+ data[3] = channel->fm_vol & 0xffff;
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
+ data[0] = (channel->delta << 24);
+ data[2] = ((channel->delta << 16) & 0xff000000) |
+ (channel->eso & 0x00ffffff);
+ data[3] = channel->fm_vol & 0xffff;
+ break;
+ default:
+ return 0;
+ }
+
+ return trident_load_channel_registers(state->card, data, channel->num);
+}
+
+static int
+compute_rate_play(u32 rate)
+{
+ int delta;
+ /* We special case 44100 and 8000 since rounding with the equation
+ does not give us an accurate enough value. For 11025 and 22050
+ the equation gives us the best answer. All other frequencies will
+ also use the equation. JDW */
+ if (rate == 44100)
+ delta = 0xeb3;
+ else if (rate == 8000)
+ delta = 0x2ab;
+ else if (rate == 48000)
+ delta = 0x1000;
+ else
+ delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
+ return delta;
+}
+
+static int
+compute_rate_rec(u32 rate)
+{
+ int delta;
+
+ if (rate == 44100)
+ delta = 0x116a;
+ else if (rate == 8000)
+ delta = 0x6000;
+ else if (rate == 48000)
+ delta = 0x1000;
+ else
+ delta = ((48000 << 12) / rate) & 0x0000ffff;
+
+ return delta;
+}
+
+/* set playback sample rate */
+static unsigned int
+trident_set_dac_rate(struct trident_state *state, unsigned int rate)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+
+ if (rate > 48000)
+ rate = 48000;
+ if (rate < 4000)
+ rate = 4000;
+
+ dmabuf->rate = rate;
+ dmabuf->channel->delta = compute_rate_play(rate);
+
+ trident_write_voice_regs(state);
+
+ pr_debug("trident: called trident_set_dac_rate : rate = %d\n", rate);
+
+ return rate;
+}
+
+/* set recording sample rate */
+static unsigned int
+trident_set_adc_rate(struct trident_state *state, unsigned int rate)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+
+ if (rate > 48000)
+ rate = 48000;
+ if (rate < 4000)
+ rate = 4000;
+
+ dmabuf->rate = rate;
+ dmabuf->channel->delta = compute_rate_rec(rate);
+
+ trident_write_voice_regs(state);
+
+ pr_debug("trident: called trident_set_adc_rate : rate = %d\n", rate);
+
+ return rate;
+}
+
+/* prepare channel attributes for playback */
+static void
+trident_play_setup(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct trident_channel *channel = dmabuf->channel;
+
+ channel->lba = dmabuf->dma_handle;
+ channel->delta = compute_rate_play(dmabuf->rate);
+
+ channel->eso = dmabuf->dmasize >> sample_shift[dmabuf->fmt];
+ channel->eso -= 1;
+
+ if (state->card->pci_id != PCI_DEVICE_ID_SI_7018) {
+ channel->attribute = 0;
+ if (state->card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ if ((channel->num == ALI_SPDIF_IN_CHANNEL) ||
+ (channel->num == ALI_PCM_IN_CHANNEL))
+ ali_disable_special_channel(state->card, channel->num);
+ else if ((inl(TRID_REG(state->card, ALI_GLOBAL_CONTROL))
+ & ALI_SPDIF_OUT_CH_ENABLE)
+ && (channel->num == ALI_SPDIF_OUT_CHANNEL)) {
+ ali_set_spdif_out_rate(state->card,
+ state->dmabuf.rate);
+ state->dmabuf.channel->delta = 0x1000;
+ }
+ }
+ }
+
+ channel->fm_vol = 0x0;
+
+ channel->control = CHANNEL_LOOP;
+ if (dmabuf->fmt & TRIDENT_FMT_16BIT) {
+ /* 16-bits */
+ channel->control |= CHANNEL_16BITS;
+ /* signed */
+ channel->control |= CHANNEL_SIGNED;
+ }
+ if (dmabuf->fmt & TRIDENT_FMT_STEREO)
+ /* stereo */
+ channel->control |= CHANNEL_STEREO;
+
+ pr_debug("trident: trident_play_setup, LBA = 0x%08x, Delta = 0x%08x, "
+ "ESO = 0x%08x, Control = 0x%08x\n", channel->lba,
+ channel->delta, channel->eso, channel->control);
+
+ trident_write_voice_regs(state);
+}
+
+/* prepare channel attributes for recording */
+static void
+trident_rec_setup(struct trident_state *state)
+{
+ u16 w;
+ u8 bval;
+
+ struct trident_card *card = state->card;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct trident_channel *channel = dmabuf->channel;
+ unsigned int rate;
+
+ /* Enable AC-97 ADC (capture) */
+ switch (card->pci_id) {
+ case PCI_DEVICE_ID_ALI_5451:
+ ali_enable_special_channel(state);
+ break;
+ case PCI_DEVICE_ID_SI_7018:
+ /* for 7018, the ac97 is always in playback/record (duplex) mode */
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
+ w = inb(TRID_REG(card, DX_ACR2_AC97_COM_STAT));
+ outb(w | 0x48, TRID_REG(card, DX_ACR2_AC97_COM_STAT));
+ /* enable and set record channel */
+ outb(0x80 | channel->num, TRID_REG(card, T4D_REC_CH));
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
+ w = inw(TRID_REG(card, T4D_MISCINT));
+ outw(w | 0x1000, TRID_REG(card, T4D_MISCINT));
+ /* enable and set record channel */
+ outb(0x80 | channel->num, TRID_REG(card, T4D_REC_CH));
+ break;
+ case PCI_DEVICE_ID_INTERG_5050:
+ /* don't know yet, using special channel 22 in GC1(0xd4)? */
+ break;
+ default:
+ return;
+ }
+
+ channel->lba = dmabuf->dma_handle;
+ channel->delta = compute_rate_rec(dmabuf->rate);
+ if ((card->pci_id == PCI_DEVICE_ID_ALI_5451) &&
+ (channel->num == ALI_SPDIF_IN_CHANNEL)) {
+ rate = ali_get_spdif_in_rate(card);
+ if (rate == 0) {
+ printk(KERN_WARNING "trident: ALi 5451 "
+ "S/PDIF input setup error!\n");
+ rate = 48000;
+ }
+ bval = inb(TRID_REG(card, ALI_SPDIF_CTRL));
+ if (bval & 0x10) {
+ outb(bval, TRID_REG(card, ALI_SPDIF_CTRL));
+ printk(KERN_WARNING "trident: cleared ALi "
+ "5451 S/PDIF parity error flag.\n");
+ }
+
+ if (rate != 48000)
+ channel->delta = ((rate << 12) / dmabuf->rate) & 0x0000ffff;
+ }
+
+ channel->eso = dmabuf->dmasize >> sample_shift[dmabuf->fmt];
+ channel->eso -= 1;
+
+ if (state->card->pci_id != PCI_DEVICE_ID_SI_7018) {
+ channel->attribute = 0;
+ }
+
+ channel->fm_vol = 0x0;
+
+ channel->control = CHANNEL_LOOP;
+ if (dmabuf->fmt & TRIDENT_FMT_16BIT) {
+ /* 16-bits */
+ channel->control |= CHANNEL_16BITS;
+ /* signed */
+ channel->control |= CHANNEL_SIGNED;
+ }
+ if (dmabuf->fmt & TRIDENT_FMT_STEREO)
+ /* stereo */
+ channel->control |= CHANNEL_STEREO;
+
+ pr_debug("trident: trident_rec_setup, LBA = 0x%08x, Delat = 0x%08x, "
+ "ESO = 0x%08x, Control = 0x%08x\n", channel->lba,
+ channel->delta, channel->eso, channel->control);
+
+ trident_write_voice_regs(state);
+}
+
+/* get current playback/recording dma buffer pointer (byte offset from LBA),
+ called with spinlock held! */
+static inline unsigned
+trident_get_dma_addr(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ u32 cso;
+
+ if (!dmabuf->enable)
+ return 0;
+
+ outb(dmabuf->channel->num, TRID_REG(state->card, T4D_LFO_GC_CIR));
+
+ switch (state->card->pci_id) {
+ case PCI_DEVICE_ID_ALI_5451:
+ case PCI_DEVICE_ID_SI_7018:
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
+ case PCI_DEVICE_ID_INTERG_5050:
+ /* 16 bits ESO, CSO for 7018 and DX */
+ cso = inw(TRID_REG(state->card, CH_DX_CSO_ALPHA_FMS + 2));
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
+ /* 24 bits ESO, CSO for NX */
+ cso = inl(TRID_REG(state->card, CH_NX_DELTA_CSO)) & 0x00ffffff;
+ break;
+ default:
+ return 0;
+ }
+
+ pr_debug("trident: trident_get_dma_addr: chip reported channel: %d, "
+ "cso = 0x%04x\n", dmabuf->channel->num, cso);
+
+ /* ESO and CSO are in units of Samples, convert to byte offset */
+ cso <<= sample_shift[dmabuf->fmt];
+
+ return (cso % dmabuf->dmasize);
+}
+
+/* Stop recording (lock held) */
+static inline void
+__stop_adc(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned int chan_num = dmabuf->channel->num;
+ struct trident_card *card = state->card;
+
+ dmabuf->enable &= ~ADC_RUNNING;
+ trident_stop_voice(card, chan_num);
+ trident_disable_voice_irq(card, chan_num);
+}
+
+static void
+stop_adc(struct trident_state *state)
+{
+ struct trident_card *card = state->card;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ __stop_adc(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static void
+start_adc(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned int chan_num = dmabuf->channel->num;
+ struct trident_card *card = state->card;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ if ((dmabuf->mapped ||
+ dmabuf->count < (signed) dmabuf->dmasize) &&
+ dmabuf->ready) {
+ dmabuf->enable |= ADC_RUNNING;
+ trident_enable_voice_irq(card, chan_num);
+ trident_start_voice(card, chan_num);
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+/* stop playback (lock held) */
+static inline void
+__stop_dac(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned int chan_num = dmabuf->channel->num;
+ struct trident_card *card = state->card;
+
+ dmabuf->enable &= ~DAC_RUNNING;
+ trident_stop_voice(card, chan_num);
+ if (state->chans_num == 6) {
+ trident_stop_voice(card, state->other_states[0]->
+ dmabuf.channel->num);
+ trident_stop_voice(card, state->other_states[1]->
+ dmabuf.channel->num);
+ trident_stop_voice(card, state->other_states[2]->
+ dmabuf.channel->num);
+ trident_stop_voice(card, state->other_states[3]->
+ dmabuf.channel->num);
+ }
+ trident_disable_voice_irq(card, chan_num);
+}
+
+static void
+stop_dac(struct trident_state *state)
+{
+ struct trident_card *card = state->card;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ __stop_dac(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static void
+start_dac(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned int chan_num = dmabuf->channel->num;
+ struct trident_card *card = state->card;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ if ((dmabuf->mapped || dmabuf->count > 0) && dmabuf->ready) {
+ dmabuf->enable |= DAC_RUNNING;
+ trident_enable_voice_irq(card, chan_num);
+ trident_start_voice(card, chan_num);
+ if (state->chans_num == 6) {
+ trident_start_voice(card, state->other_states[0]->
+ dmabuf.channel->num);
+ trident_start_voice(card, state->other_states[1]->
+ dmabuf.channel->num);
+ trident_start_voice(card, state->other_states[2]->
+ dmabuf.channel->num);
+ trident_start_voice(card, state->other_states[3]->
+ dmabuf.channel->num);
+ }
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+#define DMABUF_DEFAULTORDER (15-PAGE_SHIFT)
+#define DMABUF_MINORDER 1
+
+/* alloc a DMA buffer of with a buffer of this order */
+static int
+alloc_dmabuf(struct dmabuf *dmabuf, struct pci_dev *pci_dev, int order)
+{
+ void *rawbuf = NULL;
+ struct page *page, *pend;
+
+ if (!(rawbuf = pci_alloc_consistent(pci_dev, PAGE_SIZE << order,
+ &dmabuf->dma_handle)))
+ return -ENOMEM;
+
+ pr_debug("trident: allocated %ld (order = %d) bytes at %p\n",
+ PAGE_SIZE << order, order, rawbuf);
+
+ dmabuf->ready = dmabuf->mapped = 0;
+ dmabuf->rawbuf = rawbuf;
+ dmabuf->buforder = order;
+
+ /* now mark the pages as reserved; otherwise */
+ /* remap_pfn_range doesn't do what we want */
+ pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1);
+ for (page = virt_to_page(rawbuf); page <= pend; page++)
+ SetPageReserved(page);
+
+ return 0;
+}
+
+/* allocate the main DMA buffer, playback and recording buffer should be */
+/* allocated separately */
+static int
+alloc_main_dmabuf(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ int order;
+ int ret = -ENOMEM;
+
+ /* alloc as big a chunk as we can, FIXME: is this necessary ?? */
+ for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) {
+ if (!(ret = alloc_dmabuf(dmabuf, state->card->pci_dev, order)))
+ return 0;
+ /* else try again */
+ }
+ return ret;
+}
+
+/* deallocate a DMA buffer */
+static void
+dealloc_dmabuf(struct dmabuf *dmabuf, struct pci_dev *pci_dev)
+{
+ struct page *page, *pend;
+
+ if (dmabuf->rawbuf) {
+ /* undo marking the pages as reserved */
+ pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1);
+ for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++)
+ ClearPageReserved(page);
+ pci_free_consistent(pci_dev, PAGE_SIZE << dmabuf->buforder,
+ dmabuf->rawbuf, dmabuf->dma_handle);
+ dmabuf->rawbuf = NULL;
+ }
+ dmabuf->mapped = dmabuf->ready = 0;
+}
+
+static int
+prog_dmabuf(struct trident_state *state, enum dmabuf_mode rec)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned bytepersec;
+ struct trident_state *s = state;
+ unsigned bufsize, dma_nums;
+ unsigned long flags;
+ int ret, i, order;
+
+ if ((ret = lock_set_fmt(state)) < 0)
+ return ret;
+
+ if (state->chans_num == 6)
+ dma_nums = 5;
+ else
+ dma_nums = 1;
+
+ for (i = 0; i < dma_nums; i++) {
+ if (i > 0) {
+ s = state->other_states[i - 1];
+ dmabuf = &s->dmabuf;
+ dmabuf->fmt = state->dmabuf.fmt;
+ dmabuf->rate = state->dmabuf.rate;
+ }
+
+ spin_lock_irqsave(&s->card->lock, flags);
+ dmabuf->hwptr = dmabuf->swptr = dmabuf->total_bytes = 0;
+ dmabuf->count = dmabuf->error = 0;
+ spin_unlock_irqrestore(&s->card->lock, flags);
+
+ /* allocate DMA buffer if not allocated yet */
+ if (!dmabuf->rawbuf) {
+ if (i == 0) {
+ if ((ret = alloc_main_dmabuf(state))) {
+ unlock_set_fmt(state);
+ return ret;
+ }
+ } else {
+ ret = -ENOMEM;
+ order = state->dmabuf.buforder - 1;
+ if (order >= DMABUF_MINORDER) {
+ ret = alloc_dmabuf(dmabuf,
+ state->card->pci_dev,
+ order);
+ }
+ if (ret) {
+ /* release the main DMA buffer */
+ dealloc_dmabuf(&state->dmabuf, state->card->pci_dev);
+ /* release the auxiliary DMA buffers */
+ for (i -= 2; i >= 0; i--)
+ dealloc_dmabuf(&state->other_states[i]->dmabuf,
+ state->card->pci_dev);
+ unlock_set_fmt(state);
+ return ret;
+ }
+ }
+ }
+ /* FIXME: figure out all this OSS fragment stuff */
+ bytepersec = dmabuf->rate << sample_shift[dmabuf->fmt];
+ bufsize = PAGE_SIZE << dmabuf->buforder;
+ if (dmabuf->ossfragshift) {
+ if ((1000 << dmabuf->ossfragshift) < bytepersec)
+ dmabuf->fragshift = ld2(bytepersec / 1000);
+ else
+ dmabuf->fragshift = dmabuf->ossfragshift;
+ } else {
+ /* lets hand out reasonable big ass buffers by default */
+ dmabuf->fragshift = (dmabuf->buforder + PAGE_SHIFT - 2);
+ }
+ dmabuf->numfrag = bufsize >> dmabuf->fragshift;
+ while (dmabuf->numfrag < 4 && dmabuf->fragshift > 3) {
+ dmabuf->fragshift--;
+ dmabuf->numfrag = bufsize >> dmabuf->fragshift;
+ }
+ dmabuf->fragsize = 1 << dmabuf->fragshift;
+ if (dmabuf->ossmaxfrags >= 4 && dmabuf->ossmaxfrags < dmabuf->numfrag)
+ dmabuf->numfrag = dmabuf->ossmaxfrags;
+ dmabuf->fragsamples = dmabuf->fragsize >> sample_shift[dmabuf->fmt];
+ dmabuf->dmasize = dmabuf->numfrag << dmabuf->fragshift;
+
+ memset(dmabuf->rawbuf, (dmabuf->fmt & TRIDENT_FMT_16BIT) ? 0 : 0x80,
+ dmabuf->dmasize);
+
+ spin_lock_irqsave(&s->card->lock, flags);
+ if (rec == DM_RECORD)
+ trident_rec_setup(s);
+ else /* DM_PLAYBACK */
+ trident_play_setup(s);
+
+ spin_unlock_irqrestore(&s->card->lock, flags);
+
+ /* set the ready flag for the dma buffer */
+ dmabuf->ready = 1;
+
+ pr_debug("trident: prog_dmabuf(%d), sample rate = %d, "
+ "format = %d, numfrag = %d, fragsize = %d "
+ "dmasize = %d\n", dmabuf->channel->num,
+ dmabuf->rate, dmabuf->fmt, dmabuf->numfrag,
+ dmabuf->fragsize, dmabuf->dmasize);
+ }
+ unlock_set_fmt(state);
+ return 0;
+}
+
+
+static inline int prog_dmabuf_record(struct trident_state* state)
+{
+ return prog_dmabuf(state, DM_RECORD);
+}
+
+static inline int prog_dmabuf_playback(struct trident_state* state)
+{
+ return prog_dmabuf(state, DM_PLAYBACK);
+}
+
+/* we are doing quantum mechanics here, the buffer can only be empty, half or full filled i.e.
+ |------------|------------| or |xxxxxxxxxxxx|------------| or |xxxxxxxxxxxx|xxxxxxxxxxxx|
+ but we almost always get this
+ |xxxxxx------|------------| or |xxxxxxxxxxxx|xxxxx-------|
+ so we have to clear the tail space to "silence"
+ |xxxxxx000000|------------| or |xxxxxxxxxxxx|xxxxxx000000|
+*/
+static void
+trident_clear_tail(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned swptr;
+ unsigned char silence = (dmabuf->fmt & TRIDENT_FMT_16BIT) ? 0 : 0x80;
+ unsigned int len;
+ unsigned long flags;
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ swptr = dmabuf->swptr;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ if (swptr == 0 || swptr == dmabuf->dmasize / 2 ||
+ swptr == dmabuf->dmasize)
+ return;
+
+ if (swptr < dmabuf->dmasize / 2)
+ len = dmabuf->dmasize / 2 - swptr;
+ else
+ len = dmabuf->dmasize - swptr;
+
+ memset(dmabuf->rawbuf + swptr, silence, len);
+ if (state->card->pci_id != PCI_DEVICE_ID_ALI_5451) {
+ spin_lock_irqsave(&state->card->lock, flags);
+ dmabuf->swptr += len;
+ dmabuf->count += len;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+
+ /* restart the dma machine in case it is halted */
+ start_dac(state);
+}
+
+static int
+drain_dac(struct trident_state *state, int nonblock)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ unsigned long tmo;
+ int count;
+ unsigned long diff = 0;
+
+ if (dmabuf->mapped || !dmabuf->ready)
+ return 0;
+
+ add_wait_queue(&dmabuf->wait, &wait);
+ for (;;) {
+ /* It seems that we have to set the current state to TASK_INTERRUPTIBLE
+ every time to make the process really go to sleep */
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ count = dmabuf->count;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ if (count <= 0)
+ break;
+
+ if (signal_pending(current))
+ break;
+
+ if (nonblock) {
+ remove_wait_queue(&dmabuf->wait, &wait);
+ set_current_state(TASK_RUNNING);
+ return -EBUSY;
+ }
+
+ /* No matter how much data is left in the buffer, we have to wait until
+ CSO == ESO/2 or CSO == ESO when address engine interrupts */
+ if (state->card->pci_id == PCI_DEVICE_ID_ALI_5451 ||
+ state->card->pci_id == PCI_DEVICE_ID_INTERG_5050) {
+ diff = dmabuf->swptr - trident_get_dma_addr(state) + dmabuf->dmasize;
+ diff = diff % (dmabuf->dmasize);
+ tmo = (diff * HZ) / dmabuf->rate;
+ } else {
+ tmo = (dmabuf->dmasize * HZ) / dmabuf->rate;
+ }
+ tmo >>= sample_shift[dmabuf->fmt];
+ if (!schedule_timeout(tmo ? tmo : 1) && tmo) {
+ break;
+ }
+ }
+ remove_wait_queue(&dmabuf->wait, &wait);
+ set_current_state(TASK_RUNNING);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+
+ return 0;
+}
+
+/* update buffer manangement pointers, especially, */
+/* dmabuf->count and dmabuf->hwptr */
+static void
+trident_update_ptr(struct trident_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned hwptr, swptr;
+ int clear_cnt = 0;
+ int diff;
+ unsigned char silence;
+ unsigned half_dmasize;
+
+ /* update hardware pointer */
+ hwptr = trident_get_dma_addr(state);
+ diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
+ dmabuf->hwptr = hwptr;
+ dmabuf->total_bytes += diff;
+
+ /* error handling and process wake up for ADC */
+ if (dmabuf->enable == ADC_RUNNING) {
+ if (dmabuf->mapped) {
+ dmabuf->count -= diff;
+ if (dmabuf->count >= (signed) dmabuf->fragsize)
+ wake_up(&dmabuf->wait);
+ } else {
+ dmabuf->count += diff;
+
+ if (dmabuf->count < 0 ||
+ dmabuf->count > dmabuf->dmasize) {
+ /* buffer underrun or buffer overrun, */
+ /* we have no way to recover it here, just */
+ /* stop the machine and let the process */
+ /* force hwptr and swptr to sync */
+ __stop_adc(state);
+ dmabuf->error++;
+ }
+ if (dmabuf->count < (signed) dmabuf->dmasize / 2)
+ wake_up(&dmabuf->wait);
+ }
+ }
+
+ /* error handling and process wake up for DAC */
+ if (dmabuf->enable == DAC_RUNNING) {
+ if (dmabuf->mapped) {
+ dmabuf->count += diff;
+ if (dmabuf->count >= (signed) dmabuf->fragsize)
+ wake_up(&dmabuf->wait);
+ } else {
+ dmabuf->count -= diff;
+
+ if (dmabuf->count < 0 ||
+ dmabuf->count > dmabuf->dmasize) {
+ /* buffer underrun or buffer overrun, we have no way to recover
+ it here, just stop the machine and let the process force hwptr
+ and swptr to sync */
+ __stop_dac(state);
+ dmabuf->error++;
+ } else if (!dmabuf->endcleared) {
+ swptr = dmabuf->swptr;
+ silence = (dmabuf->fmt & TRIDENT_FMT_16BIT ? 0 : 0x80);
+ if (dmabuf->update_flag & ALI_ADDRESS_INT_UPDATE) {
+ /* We must clear end data of 1/2 dmabuf if needed.
+ According to 1/2 algorithm of Address Engine Interrupt,
+ check the validation of the data of half dmasize. */
+ half_dmasize = dmabuf->dmasize / 2;
+ if ((diff = hwptr - half_dmasize) < 0)
+ diff = hwptr;
+ if ((dmabuf->count + diff) < half_dmasize) {
+ //there is invalid data in the end of half buffer
+ if ((clear_cnt = half_dmasize - swptr) < 0)
+ clear_cnt += half_dmasize;
+ //clear the invalid data
+ memset(dmabuf->rawbuf + swptr, silence, clear_cnt);
+ if (state->chans_num == 6) {
+ clear_cnt = clear_cnt / 2;
+ swptr = swptr / 2;
+ memset(state->other_states[0]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ memset(state->other_states[1]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ memset(state->other_states[2]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ memset(state->other_states[3]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ }
+ dmabuf->endcleared = 1;
+ }
+ } else if (dmabuf->count < (signed) dmabuf->fragsize) {
+ clear_cnt = dmabuf->fragsize;
+ if ((swptr + clear_cnt) > dmabuf->dmasize)
+ clear_cnt = dmabuf->dmasize - swptr;
+ memset(dmabuf->rawbuf + swptr, silence, clear_cnt);
+ if (state->chans_num == 6) {
+ clear_cnt = clear_cnt / 2;
+ swptr = swptr / 2;
+ memset(state->other_states[0]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ memset(state->other_states[1]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ memset(state->other_states[2]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ memset(state->other_states[3]->dmabuf.rawbuf + swptr,
+ silence, clear_cnt);
+ }
+ dmabuf->endcleared = 1;
+ }
+ }
+ /* trident_update_ptr is called by interrupt handler or by process via
+ ioctl/poll, we only wake up the waiting process when we have more
+ than 1/2 buffer free (always true for interrupt handler) */
+ if (dmabuf->count < (signed) dmabuf->dmasize / 2)
+ wake_up(&dmabuf->wait);
+ }
+ }
+ dmabuf->update_flag &= ~ALI_ADDRESS_INT_UPDATE;
+}
+
+static void
+trident_address_interrupt(struct trident_card *card)
+{
+ int i;
+ struct trident_state *state;
+ unsigned int channel;
+
+ /* Update the pointers for all channels we are running. */
+ /* FIXME: should read interrupt status only once */
+ for (i = 0; i < NR_HW_CH; i++) {
+ channel = 63 - i;
+ if (trident_check_channel_interrupt(card, channel)) {
+ trident_ack_channel_interrupt(card, channel);
+ if ((state = card->states[i]) != NULL) {
+ trident_update_ptr(state);
+ } else {
+ printk(KERN_WARNING "trident: spurious channel "
+ "irq %d.\n", channel);
+ trident_stop_voice(card, channel);
+ trident_disable_voice_irq(card, channel);
+ }
+ }
+ }
+}
+
+static void
+ali_hwvol_control(struct trident_card *card, int opt)
+{
+ u16 dwTemp, volume[2], mute, diff, *pVol[2];
+
+ dwTemp = ali_ac97_read(card->ac97_codec[0], 0x02);
+ mute = dwTemp & 0x8000;
+ volume[0] = dwTemp & 0x001f;
+ volume[1] = (dwTemp & 0x1f00) >> 8;
+ if (volume[0] < volume[1]) {
+ pVol[0] = &volume[0];
+ pVol[1] = &volume[1];
+ } else {
+ pVol[1] = &volume[0];
+ pVol[0] = &volume[1];
+ }
+ diff = *(pVol[1]) - *(pVol[0]);
+
+ if (opt == 1) { // MUTE
+ dwTemp ^= 0x8000;
+ ali_ac97_write(card->ac97_codec[0],
+ 0x02, dwTemp);
+ } else if (opt == 2) { // Down
+ if (mute)
+ return;
+ if (*(pVol[1]) < 0x001f) {
+ (*pVol[1])++;
+ *(pVol[0]) = *(pVol[1]) - diff;
+ }
+ dwTemp &= 0xe0e0;
+ dwTemp |= (volume[0]) | (volume[1] << 8);
+ ali_ac97_write(card->ac97_codec[0], 0x02, dwTemp);
+ card->ac97_codec[0]->mixer_state[0] = ((32 - volume[0]) * 25 / 8) |
+ (((32 - volume[1]) * 25 / 8) << 8);
+ } else if (opt == 4) { // Up
+ if (mute)
+ return;
+ if (*(pVol[0]) > 0) {
+ (*pVol[0])--;
+ *(pVol[1]) = *(pVol[0]) + diff;
+ }
+ dwTemp &= 0xe0e0;
+ dwTemp |= (volume[0]) | (volume[1] << 8);
+ ali_ac97_write(card->ac97_codec[0], 0x02, dwTemp);
+ card->ac97_codec[0]->mixer_state[0] = ((32 - volume[0]) * 25 / 8) |
+ (((32 - volume[1]) * 25 / 8) << 8);
+ } else {
+ /* Nothing needs doing */
+ }
+}
+
+/*
+ * Re-enable reporting of vol change after 0.1 seconds
+ */
+
+static void
+ali_timeout(unsigned long ptr)
+{
+ struct trident_card *card = (struct trident_card *) ptr;
+ u16 temp = 0;
+
+ /* Enable GPIO IRQ (MISCINT bit 18h) */
+ temp = inw(TRID_REG(card, T4D_MISCINT + 2));
+ temp |= 0x0004;
+ outw(temp, TRID_REG(card, T4D_MISCINT + 2));
+}
+
+/*
+ * Set up the timer to clear the vol change notification
+ */
+
+static void
+ali_set_timer(struct trident_card *card)
+{
+ /* Add Timer Routine to Enable GPIO IRQ */
+ del_timer(&card->timer); /* Never queue twice */
+ card->timer.function = ali_timeout;
+ card->timer.data = (unsigned long) card;
+ card->timer.expires = jiffies + HZ / 10;
+ add_timer(&card->timer);
+}
+
+/*
+ * Process a GPIO event
+ */
+
+static void
+ali_queue_task(struct trident_card *card, int opt)
+{
+ u16 temp;
+
+ /* Disable GPIO IRQ (MISCINT bit 18h) */
+ temp = inw(TRID_REG(card, T4D_MISCINT + 2));
+ temp &= (u16) (~0x0004);
+ outw(temp, TRID_REG(card, T4D_MISCINT + 2));
+
+ /* Adjust the volume */
+ ali_hwvol_control(card, opt);
+
+ /* Set the timer for 1/10th sec */
+ ali_set_timer(card);
+}
+
+static void
+cyber_address_interrupt(struct trident_card *card)
+{
+ int i, irq_status;
+ struct trident_state *state;
+ unsigned int channel;
+
+ /* Update the pointers for all channels we are running. */
+ /* FIXED: read interrupt status only once */
+ irq_status = inl(TRID_REG(card, T4D_AINT_A));
+
+ pr_debug("cyber_address_interrupt: irq_status 0x%X\n", irq_status);
+
+ for (i = 0; i < NR_HW_CH; i++) {
+ channel = 31 - i;
+ if (irq_status & (1 << channel)) {
+ /* clear bit by writing a 1, zeroes are ignored */
+ outl((1 << channel), TRID_REG(card, T4D_AINT_A));
+
+ pr_debug("cyber_interrupt: channel %d\n", channel);
+
+ if ((state = card->states[i]) != NULL) {
+ trident_update_ptr(state);
+ } else {
+ printk(KERN_WARNING "cyber5050: spurious "
+ "channel irq %d.\n", channel);
+ trident_stop_voice(card, channel);
+ trident_disable_voice_irq(card, channel);
+ }
+ }
+ }
+}
+
+static irqreturn_t
+trident_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct trident_card *card = (struct trident_card *) dev_id;
+ u32 event;
+ u32 gpio;
+
+ spin_lock(&card->lock);
+ event = inl(TRID_REG(card, T4D_MISCINT));
+
+ pr_debug("trident: trident_interrupt called, MISCINT = 0x%08x\n",
+ event);
+
+ if (event & ADDRESS_IRQ) {
+ card->address_interrupt(card);
+ }
+
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ /* GPIO IRQ (H/W Volume Control) */
+ event = inl(TRID_REG(card, T4D_MISCINT));
+ if (event & (1 << 25)) {
+ gpio = inl(TRID_REG(card, ALI_GPIO));
+ if (!timer_pending(&card->timer))
+ ali_queue_task(card, gpio & 0x07);
+ }
+ event = inl(TRID_REG(card, T4D_MISCINT));
+ outl(event | (ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
+ TRID_REG(card, T4D_MISCINT));
+ spin_unlock(&card->lock);
+ return IRQ_HANDLED;
+ }
+
+ /* manually clear interrupt status, bad hardware design, blame T^2 */
+ outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
+ TRID_REG(card, T4D_MISCINT));
+ spin_unlock(&card->lock);
+ return IRQ_HANDLED;
+}
+
+/* in this loop, dmabuf.count signifies the amount of data that is waiting */
+/* to be copied to the user's buffer. it is filled by the dma machine and */
+/* drained by this loop. */
+static ssize_t
+trident_read(struct file *file, char __user *buffer, size_t count, loff_t * ppos)
+{
+ struct trident_state *state = (struct trident_state *)file->private_data;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ ssize_t ret = 0;
+ unsigned long flags;
+ unsigned swptr;
+ int cnt;
+
+ pr_debug("trident: trident_read called, count = %d\n", count);
+
+ VALIDATE_STATE(state);
+
+ if (dmabuf->mapped)
+ return -ENXIO;
+ if (!access_ok(VERIFY_WRITE, buffer, count))
+ return -EFAULT;
+
+ down(&state->sem);
+ if (!dmabuf->ready && (ret = prog_dmabuf_record(state)))
+ goto out;
+
+ while (count > 0) {
+ spin_lock_irqsave(&state->card->lock, flags);
+ if (dmabuf->count > (signed) dmabuf->dmasize) {
+ /* buffer overrun, we are recovering from */
+ /* sleep_on_timeout, resync hwptr and swptr, */
+ /* make process flush the buffer */
+ dmabuf->count = dmabuf->dmasize;
+ dmabuf->swptr = dmabuf->hwptr;
+ }
+ swptr = dmabuf->swptr;
+ cnt = dmabuf->dmasize - swptr;
+ if (dmabuf->count < cnt)
+ cnt = dmabuf->count;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ if (cnt > count)
+ cnt = count;
+ if (cnt <= 0) {
+ unsigned long tmo;
+ /* buffer is empty, start the dma machine and */
+ /* wait for data to be recorded */
+ start_adc(state);
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ up(&state->sem);
+ /* No matter how much space left in the buffer, */
+ /* we have to wait until CSO == ESO/2 or CSO == ESO */
+ /* when address engine interrupts */
+ tmo = (dmabuf->dmasize * HZ) / (dmabuf->rate * 2);
+ tmo >>= sample_shift[dmabuf->fmt];
+ /* There are two situations when sleep_on_timeout returns, one is when
+ the interrupt is serviced correctly and the process is waked up by
+ ISR ON TIME. Another is when timeout is expired, which means that
+ either interrupt is NOT serviced correctly (pending interrupt) or it
+ is TOO LATE for the process to be scheduled to run (scheduler latency)
+ which results in a (potential) buffer overrun. And worse, there is
+ NOTHING we can do to prevent it. */
+ if (!interruptible_sleep_on_timeout(&dmabuf->wait, tmo)) {
+ pr_debug(KERN_ERR "trident: recording schedule timeout, "
+ "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
+ dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
+ dmabuf->hwptr, dmabuf->swptr);
+
+ /* a buffer overrun, we delay the recovery until next time the
+ while loop begin and we REALLY have space to record */
+ }
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -ERESTARTSYS;
+ goto out;
+ }
+ down(&state->sem);
+ if (dmabuf->mapped) {
+ if (!ret)
+ ret = -ENXIO;
+ goto out;
+ }
+ continue;
+ }
+
+ if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) {
+ if (!ret)
+ ret = -EFAULT;
+ goto out;
+ }
+
+ swptr = (swptr + cnt) % dmabuf->dmasize;
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ dmabuf->swptr = swptr;
+ dmabuf->count -= cnt;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ start_adc(state);
+ }
+out:
+ up(&state->sem);
+ return ret;
+}
+
+/* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to
+ the soundcard. it is drained by the dma machine and filled by this loop. */
+
+static ssize_t
+trident_write(struct file *file, const char __user *buffer, size_t count, loff_t * ppos)
+{
+ struct trident_state *state = (struct trident_state *)file->private_data;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ ssize_t ret;
+ unsigned long flags;
+ unsigned swptr;
+ int cnt;
+ unsigned int state_cnt;
+ unsigned int copy_count;
+ int lret; /* for lock_set_fmt */
+
+ pr_debug("trident: trident_write called, count = %d\n", count);
+
+ VALIDATE_STATE(state);
+
+ /*
+ * Guard against an mmap or ioctl while writing
+ */
+
+ down(&state->sem);
+
+ if (dmabuf->mapped) {
+ ret = -ENXIO;
+ goto out;
+ }
+ if (!dmabuf->ready && (ret = prog_dmabuf_playback(state)))
+ goto out;
+
+ if (!access_ok(VERIFY_READ, buffer, count)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ ret = 0;
+
+ while (count > 0) {
+ spin_lock_irqsave(&state->card->lock, flags);
+ if (dmabuf->count < 0) {
+ /* buffer underrun, we are recovering from */
+ /* sleep_on_timeout, resync hwptr and swptr */
+ dmabuf->count = 0;
+ dmabuf->swptr = dmabuf->hwptr;
+ }
+ swptr = dmabuf->swptr;
+ cnt = dmabuf->dmasize - swptr;
+ if (dmabuf->count + cnt > dmabuf->dmasize)
+ cnt = dmabuf->dmasize - dmabuf->count;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ if (cnt > count)
+ cnt = count;
+ if (cnt <= 0) {
+ unsigned long tmo;
+ /* buffer is full, start the dma machine and */
+ /* wait for data to be played */
+ start_dac(state);
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ goto out;
+ }
+ /* No matter how much data left in the buffer, */
+ /* we have to wait until CSO == ESO/2 or CSO == ESO */
+ /* when address engine interrupts */
+ lock_set_fmt(state);
+ tmo = (dmabuf->dmasize * HZ) / (dmabuf->rate * 2);
+ tmo >>= sample_shift[dmabuf->fmt];
+ unlock_set_fmt(state);
+ up(&state->sem);
+
+ /* There are two situations when sleep_on_timeout */
+ /* returns, one is when the interrupt is serviced */
+ /* correctly and the process is waked up by ISR */
+ /* ON TIME. Another is when timeout is expired, which */
+ /* means that either interrupt is NOT serviced */
+ /* correctly (pending interrupt) or it is TOO LATE */
+ /* for the process to be scheduled to run */
+ /* (scheduler latency) which results in a (potential) */
+ /* buffer underrun. And worse, there is NOTHING we */
+ /* can do to prevent it. */
+ if (!interruptible_sleep_on_timeout(&dmabuf->wait, tmo)) {
+ pr_debug(KERN_ERR "trident: playback schedule "
+ "timeout, dmasz %u fragsz %u count %i "
+ "hwptr %u swptr %u\n", dmabuf->dmasize,
+ dmabuf->fragsize, dmabuf->count,
+ dmabuf->hwptr, dmabuf->swptr);
+
+ /* a buffer underrun, we delay the recovery */
+ /* until next time the while loop begin and */
+ /* we REALLY have data to play */
+ }
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -ERESTARTSYS;
+ goto out_nolock;
+ }
+ down(&state->sem);
+ if (dmabuf->mapped) {
+ if (!ret)
+ ret = -ENXIO;
+ goto out;
+ }
+ continue;
+ }
+ if ((lret = lock_set_fmt(state)) < 0) {
+ ret = lret;
+ goto out;
+ }
+
+ if (state->chans_num == 6) {
+ copy_count = 0;
+ state_cnt = 0;
+ if (ali_write_5_1(state, buffer, cnt, &copy_count,
+ &state_cnt) == -EFAULT) {
+ if (state_cnt) {
+ swptr = (swptr + state_cnt) % dmabuf->dmasize;
+ spin_lock_irqsave(&state->card->lock, flags);
+ dmabuf->swptr = swptr;
+ dmabuf->count += state_cnt;
+ dmabuf->endcleared = 0;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ ret += copy_count;
+ if (!ret)
+ ret = -EFAULT;
+ unlock_set_fmt(state);
+ goto out;
+ }
+ } else {
+ if (copy_from_user(dmabuf->rawbuf + swptr,
+ buffer, cnt)) {
+ if (!ret)
+ ret = -EFAULT;
+ unlock_set_fmt(state);
+ goto out;
+ }
+ state_cnt = cnt;
+ }
+ unlock_set_fmt(state);
+
+ swptr = (swptr + state_cnt) % dmabuf->dmasize;
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ dmabuf->swptr = swptr;
+ dmabuf->count += state_cnt;
+ dmabuf->endcleared = 0;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ start_dac(state);
+ }
+out:
+ up(&state->sem);
+out_nolock:
+ return ret;
+}
+
+/* No kernel lock - we have our own spinlock */
+static unsigned int
+trident_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct trident_state *state = (struct trident_state *)file->private_data;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ unsigned int mask = 0;
+
+ VALIDATE_STATE(state);
+
+ /*
+ * Guard against a parallel poll and write causing multiple
+ * prog_dmabuf events
+ */
+
+ down(&state->sem);
+
+ if (file->f_mode & FMODE_WRITE) {
+ if (!dmabuf->ready && prog_dmabuf_playback(state)) {
+ up(&state->sem);
+ return 0;
+ }
+ poll_wait(file, &dmabuf->wait, wait);
+ }
+ if (file->f_mode & FMODE_READ) {
+ if (!dmabuf->ready && prog_dmabuf_record(state)) {
+ up(&state->sem);
+ return 0;
+ }
+ poll_wait(file, &dmabuf->wait, wait);
+ }
+
+ up(&state->sem);
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_update_ptr(state);
+ if (file->f_mode & FMODE_READ) {
+ if (dmabuf->count >= (signed) dmabuf->fragsize)
+ mask |= POLLIN | POLLRDNORM;
+ }
+ if (file->f_mode & FMODE_WRITE) {
+ if (dmabuf->mapped) {
+ if (dmabuf->count >= (signed) dmabuf->fragsize)
+ mask |= POLLOUT | POLLWRNORM;
+ } else {
+ if ((signed) dmabuf->dmasize >= dmabuf->count +
+ (signed) dmabuf->fragsize)
+ mask |= POLLOUT | POLLWRNORM;
+ }
+ }
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ return mask;
+}
+
+static int
+trident_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct trident_state *state = (struct trident_state *)file->private_data;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ int ret = -EINVAL;
+ unsigned long size;
+
+ VALIDATE_STATE(state);
+
+ /*
+ * Lock against poll read write or mmap creating buffers. Also lock
+ * a read or write against an mmap.
+ */
+
+ down(&state->sem);
+
+ if (vma->vm_flags & VM_WRITE) {
+ if ((ret = prog_dmabuf_playback(state)) != 0)
+ goto out;
+ } else if (vma->vm_flags & VM_READ) {
+ if ((ret = prog_dmabuf_record(state)) != 0)
+ goto out;
+ } else
+ goto out;
+
+ ret = -EINVAL;
+ if (vma->vm_pgoff != 0)
+ goto out;
+ size = vma->vm_end - vma->vm_start;
+ if (size > (PAGE_SIZE << dmabuf->buforder))
+ goto out;
+ ret = -EAGAIN;
+ if (remap_pfn_range(vma, vma->vm_start,
+ virt_to_phys(dmabuf->rawbuf) >> PAGE_SHIFT,
+ size, vma->vm_page_prot))
+ goto out;
+ dmabuf->mapped = 1;
+ ret = 0;
+out:
+ up(&state->sem);
+ return ret;
+}
+
+static int
+trident_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct trident_state *state = (struct trident_state *)file->private_data;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ audio_buf_info abinfo;
+ count_info cinfo;
+ int val, mapped, ret = 0;
+ struct trident_card *card = state->card;
+ void __user *argp = (void __user *)arg;
+ int __user *p = argp;
+
+ VALIDATE_STATE(state);
+
+
+ mapped = ((file->f_mode & (FMODE_WRITE | FMODE_READ)) && dmabuf->mapped);
+
+ pr_debug("trident: trident_ioctl, command = %2d, arg = 0x%08x\n",
+ _IOC_NR(cmd), arg ? *p : 0);
+
+ switch (cmd) {
+ case OSS_GETVERSION:
+ ret = put_user(SOUND_VERSION, p);
+ break;
+
+ case SNDCTL_DSP_RESET:
+ /* FIXME: spin_lock ? */
+ if (file->f_mode & FMODE_WRITE) {
+ stop_dac(state);
+ synchronize_irq(card->irq);
+ dmabuf->ready = 0;
+ dmabuf->swptr = dmabuf->hwptr = 0;
+ dmabuf->count = dmabuf->total_bytes = 0;
+ }
+ if (file->f_mode & FMODE_READ) {
+ stop_adc(state);
+ synchronize_irq(card->irq);
+ dmabuf->ready = 0;
+ dmabuf->swptr = dmabuf->hwptr = 0;
+ dmabuf->count = dmabuf->total_bytes = 0;
+ }
+ break;
+
+ case SNDCTL_DSP_SYNC:
+ if (file->f_mode & FMODE_WRITE)
+ ret = drain_dac(state, file->f_flags & O_NONBLOCK);
+ break;
+
+ case SNDCTL_DSP_SPEED: /* set smaple rate */
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+ if (val >= 0) {
+ if (file->f_mode & FMODE_WRITE) {
+ stop_dac(state);
+ dmabuf->ready = 0;
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_set_dac_rate(state, val);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ if (file->f_mode & FMODE_READ) {
+ stop_adc(state);
+ dmabuf->ready = 0;
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_set_adc_rate(state, val);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ }
+ ret = put_user(dmabuf->rate, p);
+ break;
+
+ case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+ if ((ret = lock_set_fmt(state)) < 0)
+ return ret;
+
+ if (file->f_mode & FMODE_WRITE) {
+ stop_dac(state);
+ dmabuf->ready = 0;
+ if (val)
+ dmabuf->fmt |= TRIDENT_FMT_STEREO;
+ else
+ dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
+ }
+ if (file->f_mode & FMODE_READ) {
+ stop_adc(state);
+ dmabuf->ready = 0;
+ if (val)
+ dmabuf->fmt |= TRIDENT_FMT_STEREO;
+ else
+ dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
+ }
+ unlock_set_fmt(state);
+ break;
+
+ case SNDCTL_DSP_GETBLKSIZE:
+ if (file->f_mode & FMODE_WRITE) {
+ if ((val = prog_dmabuf_playback(state)))
+ ret = val;
+ else
+ ret = put_user(dmabuf->fragsize, p);
+ break;
+ }
+ if (file->f_mode & FMODE_READ) {
+ if ((val = prog_dmabuf_record(state)))
+ ret = val;
+ else
+ ret = put_user(dmabuf->fragsize, p);
+ break;
+ }
+ /* neither READ nor WRITE? is this even possible? */
+ ret = -EINVAL;
+ break;
+
+
+ case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format */
+ ret = put_user(AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
+ AFMT_U8, p);
+ break;
+
+ case SNDCTL_DSP_SETFMT: /* Select sample format */
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+ if ((ret = lock_set_fmt(state)) < 0)
+ return ret;
+
+ if (val != AFMT_QUERY) {
+ if (file->f_mode & FMODE_WRITE) {
+ stop_dac(state);
+ dmabuf->ready = 0;
+ if (val == AFMT_S16_LE)
+ dmabuf->fmt |= TRIDENT_FMT_16BIT;
+ else
+ dmabuf->fmt &= ~TRIDENT_FMT_16BIT;
+ }
+ if (file->f_mode & FMODE_READ) {
+ stop_adc(state);
+ dmabuf->ready = 0;
+ if (val == AFMT_S16_LE)
+ dmabuf->fmt |= TRIDENT_FMT_16BIT;
+ else
+ dmabuf->fmt &= ~TRIDENT_FMT_16BIT;
+ }
+ }
+ unlock_set_fmt(state);
+ ret = put_user((dmabuf->fmt & TRIDENT_FMT_16BIT) ? AFMT_S16_LE :
+ AFMT_U8, p);
+ break;
+
+ case SNDCTL_DSP_CHANNELS:
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+ if (val != 0) {
+ if ((ret = lock_set_fmt(state)) < 0)
+ return ret;
+
+ if (file->f_mode & FMODE_WRITE) {
+ stop_dac(state);
+ dmabuf->ready = 0;
+
+ //prevent from memory leak
+ if ((state->chans_num > 2) && (state->chans_num != val)) {
+ ali_free_other_states_resources(state);
+ state->chans_num = 1;
+ }
+
+ if (val >= 2) {
+
+ dmabuf->fmt |= TRIDENT_FMT_STEREO;
+ if ((val == 6) && (state->card->pci_id == PCI_DEVICE_ID_ALI_5451)) {
+ if (card->rec_channel_use_count > 0) {
+ printk(KERN_ERR "trident: Record is "
+ "working on the card!\n");
+ ret = -EBUSY;
+ unlock_set_fmt(state);
+ break;
+ }
+
+ ret = ali_setup_multi_channels(state->card, 6);
+ if (ret < 0) {
+ unlock_set_fmt(state);
+ break;
+ }
+ down(&state->card->open_sem);
+ ret = ali_allocate_other_states_resources(state, 6);
+ if (ret < 0) {
+ up(&state->card->open_sem);
+ unlock_set_fmt(state);
+ break;
+ }
+ state->card->multi_channel_use_count++;
+ up(&state->card->open_sem);
+ } else
+ val = 2; /*yield to 2-channels */
+ } else
+ dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
+ state->chans_num = val;
+ }
+ if (file->f_mode & FMODE_READ) {
+ stop_adc(state);
+ dmabuf->ready = 0;
+ if (val >= 2) {
+ if (!((file->f_mode & FMODE_WRITE) &&
+ (val == 6)))
+ val = 2;
+ dmabuf->fmt |= TRIDENT_FMT_STEREO;
+ } else
+ dmabuf->fmt &= ~TRIDENT_FMT_STEREO;
+ state->chans_num = val;
+ }
+ unlock_set_fmt(state);
+ }
+ ret = put_user(val, p);
+ break;
+
+ case SNDCTL_DSP_POST:
+ /* Cause the working fragment to be output */
+ break;
+
+ case SNDCTL_DSP_SUBDIVIDE:
+ if (dmabuf->subdivision) {
+ ret = -EINVAL;
+ break;
+ }
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+ if (val != 1 && val != 2 && val != 4) {
+ ret = -EINVAL;
+ break;
+ }
+ dmabuf->subdivision = val;
+ break;
+
+ case SNDCTL_DSP_SETFRAGMENT:
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+
+ dmabuf->ossfragshift = val & 0xffff;
+ dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
+ if (dmabuf->ossfragshift < 4)
+ dmabuf->ossfragshift = 4;
+ if (dmabuf->ossfragshift > 15)
+ dmabuf->ossfragshift = 15;
+ if (dmabuf->ossmaxfrags < 4)
+ dmabuf->ossmaxfrags = 4;
+
+ break;
+
+ case SNDCTL_DSP_GETOSPACE:
+ if (!(file->f_mode & FMODE_WRITE)) {
+ ret = -EINVAL;
+ break;
+ }
+ if (!dmabuf->ready && (val = prog_dmabuf_playback(state)) != 0) {
+ ret = val;
+ break;
+ }
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_update_ptr(state);
+ abinfo.fragsize = dmabuf->fragsize;
+ abinfo.bytes = dmabuf->dmasize - dmabuf->count;
+ abinfo.fragstotal = dmabuf->numfrag;
+ abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ ret = copy_to_user(argp, &abinfo, sizeof (abinfo)) ?
+ -EFAULT : 0;
+ break;
+
+ case SNDCTL_DSP_GETISPACE:
+ if (!(file->f_mode & FMODE_READ)) {
+ ret = -EINVAL;
+ break;
+ }
+ if (!dmabuf->ready && (val = prog_dmabuf_record(state)) != 0) {
+ ret = val;
+ break;
+ }
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_update_ptr(state);
+ abinfo.fragsize = dmabuf->fragsize;
+ abinfo.bytes = dmabuf->count;
+ abinfo.fragstotal = dmabuf->numfrag;
+ abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ ret = copy_to_user(argp, &abinfo, sizeof (abinfo)) ?
+ -EFAULT : 0;
+ break;
+
+ case SNDCTL_DSP_NONBLOCK:
+ file->f_flags |= O_NONBLOCK;
+ break;
+
+ case SNDCTL_DSP_GETCAPS:
+ ret = put_user(DSP_CAP_REALTIME | DSP_CAP_TRIGGER |
+ DSP_CAP_MMAP | DSP_CAP_BIND, p);
+ break;
+
+ case SNDCTL_DSP_GETTRIGGER:
+ val = 0;
+ if ((file->f_mode & FMODE_READ) && dmabuf->enable)
+ val |= PCM_ENABLE_INPUT;
+ if ((file->f_mode & FMODE_WRITE) && dmabuf->enable)
+ val |= PCM_ENABLE_OUTPUT;
+ ret = put_user(val, p);
+ break;
+
+ case SNDCTL_DSP_SETTRIGGER:
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+ if (file->f_mode & FMODE_READ) {
+ if (val & PCM_ENABLE_INPUT) {
+ if (!dmabuf->ready &&
+ (ret = prog_dmabuf_record(state)))
+ break;
+ start_adc(state);
+ } else
+ stop_adc(state);
+ }
+ if (file->f_mode & FMODE_WRITE) {
+ if (val & PCM_ENABLE_OUTPUT) {
+ if (!dmabuf->ready &&
+ (ret = prog_dmabuf_playback(state)))
+ break;
+ start_dac(state);
+ } else
+ stop_dac(state);
+ }
+ break;
+
+ case SNDCTL_DSP_GETIPTR:
+ if (!(file->f_mode & FMODE_READ)) {
+ ret = -EINVAL;
+ break;
+ }
+ if (!dmabuf->ready && (val = prog_dmabuf_record(state))
+ != 0) {
+ ret = val;
+ break;
+ }
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_update_ptr(state);
+ cinfo.bytes = dmabuf->total_bytes;
+ cinfo.blocks = dmabuf->count >> dmabuf->fragshift;
+ cinfo.ptr = dmabuf->hwptr;
+ if (dmabuf->mapped)
+ dmabuf->count &= dmabuf->fragsize - 1;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ ret = copy_to_user(argp, &cinfo, sizeof (cinfo)) ?
+ -EFAULT : 0;
+ break;
+
+ case SNDCTL_DSP_GETOPTR:
+ if (!(file->f_mode & FMODE_WRITE)) {
+ ret = -EINVAL;
+ break;
+ }
+ if (!dmabuf->ready && (val = prog_dmabuf_playback(state))
+ != 0) {
+ ret = val;
+ break;
+ }
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_update_ptr(state);
+ cinfo.bytes = dmabuf->total_bytes;
+ cinfo.blocks = dmabuf->count >> dmabuf->fragshift;
+ cinfo.ptr = dmabuf->hwptr;
+ if (dmabuf->mapped)
+ dmabuf->count &= dmabuf->fragsize - 1;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ ret = copy_to_user(argp, &cinfo, sizeof (cinfo)) ?
+ -EFAULT : 0;
+ break;
+
+ case SNDCTL_DSP_SETDUPLEX:
+ ret = -EINVAL;
+ break;
+
+ case SNDCTL_DSP_GETODELAY:
+ if (!(file->f_mode & FMODE_WRITE)) {
+ ret = -EINVAL;
+ break;
+ }
+ if (!dmabuf->ready && (val = prog_dmabuf_playback(state)) != 0) {
+ ret = val;
+ break;
+ }
+ spin_lock_irqsave(&state->card->lock, flags);
+ trident_update_ptr(state);
+ val = dmabuf->count;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ ret = put_user(val, p);
+ break;
+
+ case SOUND_PCM_READ_RATE:
+ ret = put_user(dmabuf->rate, p);
+ break;
+
+ case SOUND_PCM_READ_CHANNELS:
+ ret = put_user((dmabuf->fmt & TRIDENT_FMT_STEREO) ? 2 : 1,
+ p);
+ break;
+
+ case SOUND_PCM_READ_BITS:
+ ret = put_user((dmabuf->fmt & TRIDENT_FMT_16BIT) ? AFMT_S16_LE :
+ AFMT_U8, p);
+ break;
+
+ case SNDCTL_DSP_GETCHANNELMASK:
+ ret = put_user(DSP_BIND_FRONT | DSP_BIND_SURR |
+ DSP_BIND_CENTER_LFE, p);
+ break;
+
+ case SNDCTL_DSP_BIND_CHANNEL:
+ if (state->card->pci_id != PCI_DEVICE_ID_SI_7018) {
+ ret = -EINVAL;
+ break;
+ }
+
+ if (get_user(val, p)) {
+ ret = -EFAULT;
+ break;
+ }
+ if (val == DSP_BIND_QUERY) {
+ val = dmabuf->channel->attribute | 0x3c00;
+ val = attr2mask[val >> 8];
+ } else {
+ dmabuf->ready = 0;
+ if (file->f_mode & FMODE_READ)
+ dmabuf->channel->attribute = (CHANNEL_REC |
+ SRC_ENABLE);
+ if (file->f_mode & FMODE_WRITE)
+ dmabuf->channel->attribute = (CHANNEL_SPC_PB |
+ SRC_ENABLE);
+ dmabuf->channel->attribute |= mask2attr[ffs(val)];
+ }
+ ret = put_user(val, p);
+ break;
+
+ case SNDCTL_DSP_MAPINBUF:
+ case SNDCTL_DSP_MAPOUTBUF:
+ case SNDCTL_DSP_SETSYNCRO:
+ case SOUND_PCM_WRITE_FILTER:
+ case SOUND_PCM_READ_FILTER:
+ default:
+ ret = -EINVAL;
+ break;
+
+ }
+ return ret;
+}
+
+static int
+trident_open(struct inode *inode, struct file *file)
+{
+ int i = 0;
+ int minor = iminor(inode);
+ struct trident_card *card = devs;
+ struct trident_state *state = NULL;
+ struct dmabuf *dmabuf = NULL;
+
+ /* Added by Matt Wu 01-05-2001 */
+ /* TODO: there's some redundacy here wrt the check below */
+ /* for multi_use_count > 0. Should we return -EBUSY or find */
+ /* a different card? for now, don't break current behaviour */
+ /* -- mulix */
+ if (file->f_mode & FMODE_READ) {
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ if (card->multi_channel_use_count > 0)
+ return -EBUSY;
+ }
+ }
+
+ /* find an available virtual channel (instance of /dev/dsp) */
+ while (card != NULL) {
+ down(&card->open_sem);
+ if (file->f_mode & FMODE_READ) {
+ /* Skip opens on cards that are in 6 channel mode */
+ if (card->multi_channel_use_count > 0) {
+ up(&card->open_sem);
+ card = card->next;
+ continue;
+ }
+ }
+ for (i = 0; i < NR_HW_CH; i++) {
+ if (card->states[i] == NULL) {
+ state = card->states[i] = kmalloc(sizeof(*state), GFP_KERNEL);
+ if (state == NULL) {
+ up(&card->open_sem);
+ return -ENOMEM;
+ }
+ memset(state, 0, sizeof(*state));
+ init_MUTEX(&state->sem);
+ dmabuf = &state->dmabuf;
+ goto found_virt;
+ }
+ }
+ up(&card->open_sem);
+ card = card->next;
+ }
+ /* no more virtual channel avaiable */
+ if (!state) {
+ return -ENODEV;
+ }
+ found_virt:
+ /* found a free virtual channel, allocate hardware channels */
+ if (file->f_mode & FMODE_READ)
+ dmabuf->channel = card->alloc_rec_pcm_channel(card);
+ else
+ dmabuf->channel = card->alloc_pcm_channel(card);
+
+ if (dmabuf->channel == NULL) {
+ kfree(card->states[i]);
+ card->states[i] = NULL;
+ return -ENODEV;
+ }
+
+ /* initialize the virtual channel */
+ state->virt = i;
+ state->card = card;
+ state->magic = TRIDENT_STATE_MAGIC;
+ init_waitqueue_head(&dmabuf->wait);
+ file->private_data = state;
+
+ /* set default sample format. According to OSS Programmer's */
+ /* Guide /dev/dsp should be default to unsigned 8-bits, mono, */
+ /* with sample rate 8kHz and /dev/dspW will accept 16-bits sample */
+ if (file->f_mode & FMODE_WRITE) {
+ dmabuf->fmt &= ~TRIDENT_FMT_MASK;
+ if ((minor & 0x0f) == SND_DEV_DSP16)
+ dmabuf->fmt |= TRIDENT_FMT_16BIT;
+ dmabuf->ossfragshift = 0;
+ dmabuf->ossmaxfrags = 0;
+ dmabuf->subdivision = 0;
+ if (card->pci_id == PCI_DEVICE_ID_SI_7018) {
+ /* set default channel attribute to normal playback */
+ dmabuf->channel->attribute = CHANNEL_PB;
+ }
+ trident_set_dac_rate(state, 8000);
+ }
+
+ if (file->f_mode & FMODE_READ) {
+ /* FIXME: Trident 4d can only record in signed 16-bits stereo, */
+ /* 48kHz sample, to be dealed with in trident_set_adc_rate() ?? */
+ dmabuf->fmt &= ~TRIDENT_FMT_MASK;
+ if ((minor & 0x0f) == SND_DEV_DSP16)
+ dmabuf->fmt |= TRIDENT_FMT_16BIT;
+ dmabuf->ossfragshift = 0;
+ dmabuf->ossmaxfrags = 0;
+ dmabuf->subdivision = 0;
+ if (card->pci_id == PCI_DEVICE_ID_SI_7018) {
+ /* set default channel attribute to 0x8a80, record from
+ PCM L/R FIFO and mono = (left + right + 1)/2 */
+ dmabuf->channel->attribute = (CHANNEL_REC | PCM_LR |
+ MONO_MIX);
+ }
+ trident_set_adc_rate(state, 8000);
+
+ /* Added by Matt Wu 01-05-2001 */
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451)
+ card->rec_channel_use_count++;
+ }
+
+ state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
+ up(&card->open_sem);
+
+ pr_debug("trident: open virtual channel %d, hard channel %d\n",
+ state->virt, dmabuf->channel->num);
+
+ return nonseekable_open(inode, file);
+}
+
+static int
+trident_release(struct inode *inode, struct file *file)
+{
+ struct trident_state *state = (struct trident_state *)file->private_data;
+ struct trident_card *card;
+ struct dmabuf *dmabuf;
+
+ VALIDATE_STATE(state);
+
+ card = state->card;
+ dmabuf = &state->dmabuf;
+
+ if (file->f_mode & FMODE_WRITE) {
+ trident_clear_tail(state);
+ drain_dac(state, file->f_flags & O_NONBLOCK);
+ }
+
+ pr_debug("trident: closing virtual channel %d, hard channel %d\n",
+ state->virt, dmabuf->channel->num);
+
+ /* stop DMA state machine and free DMA buffers/channels */
+ down(&card->open_sem);
+
+ if (file->f_mode & FMODE_WRITE) {
+ stop_dac(state);
+ dealloc_dmabuf(&state->dmabuf, state->card->pci_dev);
+ state->card->free_pcm_channel(state->card, dmabuf->channel->num);
+
+ /* Added by Matt Wu */
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ if (state->chans_num > 2) {
+ if (card->multi_channel_use_count-- < 0)
+ card->multi_channel_use_count = 0;
+ if (card->multi_channel_use_count == 0)
+ ali_close_multi_channels();
+ ali_free_other_states_resources(state);
+ }
+ }
+ }
+ if (file->f_mode & FMODE_READ) {
+ stop_adc(state);
+ dealloc_dmabuf(&state->dmabuf, state->card->pci_dev);
+ state->card->free_pcm_channel(state->card, dmabuf->channel->num);
+
+ /* Added by Matt Wu */
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ if (card->rec_channel_use_count-- < 0)
+ card->rec_channel_use_count = 0;
+ }
+ }
+
+ card->states[state->virt] = NULL;
+ kfree(state);
+
+ /* we're covered by the open_sem */
+ up(&card->open_sem);
+
+ return 0;
+}
+
+static /*const */ struct file_operations trident_audio_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = trident_read,
+ .write = trident_write,
+ .poll = trident_poll,
+ .ioctl = trident_ioctl,
+ .mmap = trident_mmap,
+ .open = trident_open,
+ .release = trident_release,
+};
+
+/* trident specific AC97 functions */
+/* Write AC97 codec registers */
+static void
+trident_ac97_set(struct ac97_codec *codec, u8 reg, u16 val)
+{
+ struct trident_card *card = (struct trident_card *)codec->private_data;
+ unsigned int address, mask, busy;
+ unsigned short count = 0xffff;
+ unsigned long flags;
+ u32 data;
+
+ data = ((u32) val) << 16;
+
+ switch (card->pci_id) {
+ default:
+ case PCI_DEVICE_ID_SI_7018:
+ address = SI_AC97_WRITE;
+ mask = SI_AC97_BUSY_WRITE | SI_AC97_AUDIO_BUSY;
+ if (codec->id)
+ mask |= SI_AC97_SECONDARY;
+ busy = SI_AC97_BUSY_WRITE;
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
+ address = DX_ACR0_AC97_W;
+ mask = busy = DX_AC97_BUSY_WRITE;
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
+ address = NX_ACR1_AC97_W;
+ mask = NX_AC97_BUSY_WRITE;
+ if (codec->id)
+ mask |= NX_AC97_WRITE_SECONDARY;
+ busy = NX_AC97_BUSY_WRITE;
+ break;
+ case PCI_DEVICE_ID_INTERG_5050:
+ address = SI_AC97_WRITE;
+ mask = busy = SI_AC97_BUSY_WRITE;
+ if (codec->id)
+ mask |= SI_AC97_SECONDARY;
+ break;
+ }
+
+ spin_lock_irqsave(&card->lock, flags);
+ do {
+ if ((inw(TRID_REG(card, address)) & busy) == 0)
+ break;
+ } while (count--);
+
+ data |= (mask | (reg & AC97_REG_ADDR));
+
+ if (count == 0) {
+ printk(KERN_ERR "trident: AC97 CODEC write timed out.\n");
+ spin_unlock_irqrestore(&card->lock, flags);
+ return;
+ }
+
+ outl(data, TRID_REG(card, address));
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+/* Read AC97 codec registers */
+static u16
+trident_ac97_get(struct ac97_codec *codec, u8 reg)
+{
+ struct trident_card *card = (struct trident_card *)codec->private_data;
+ unsigned int address, mask, busy;
+ unsigned short count = 0xffff;
+ unsigned long flags;
+ u32 data;
+
+ switch (card->pci_id) {
+ default:
+ case PCI_DEVICE_ID_SI_7018:
+ address = SI_AC97_READ;
+ mask = SI_AC97_BUSY_READ | SI_AC97_AUDIO_BUSY;
+ if (codec->id)
+ mask |= SI_AC97_SECONDARY;
+ busy = SI_AC97_BUSY_READ;
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
+ address = DX_ACR1_AC97_R;
+ mask = busy = DX_AC97_BUSY_READ;
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
+ if (codec->id)
+ address = NX_ACR3_AC97_R_SECONDARY;
+ else
+ address = NX_ACR2_AC97_R_PRIMARY;
+ mask = NX_AC97_BUSY_READ;
+ busy = NX_AC97_BUSY_READ | NX_AC97_BUSY_DATA;
+ break;
+ case PCI_DEVICE_ID_INTERG_5050:
+ address = SI_AC97_READ;
+ mask = busy = SI_AC97_BUSY_READ;
+ if (codec->id)
+ mask |= SI_AC97_SECONDARY;
+ break;
+ }
+
+ data = (mask | (reg & AC97_REG_ADDR));
+
+ spin_lock_irqsave(&card->lock, flags);
+ outl(data, TRID_REG(card, address));
+ do {
+ data = inl(TRID_REG(card, address));
+ if ((data & busy) == 0)
+ break;
+ } while (count--);
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ if (count == 0) {
+ printk(KERN_ERR "trident: AC97 CODEC read timed out.\n");
+ data = 0;
+ }
+ return ((u16) (data >> 16));
+}
+
+/* rewrite ac97 read and write mixer register by hulei for ALI*/
+static int
+acquirecodecaccess(struct trident_card *card)
+{
+ u16 wsemamask = 0x6000; /* bit 14..13 */
+ u16 wsemabits;
+ u16 wcontrol;
+ int block = 0;
+ int ncount = 25;
+ while (1) {
+ wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
+ wsemabits = wcontrol & wsemamask;
+
+ if (wsemabits == 0x4000)
+ return 1; /* 0x4000 is audio ,then success */
+ if (ncount-- < 0)
+ break;
+ if (wsemabits == 0) {
+ unlock:
+ outl(((u32) (wcontrol & 0x1eff) | 0x00004000),
+ TRID_REG(card, ALI_AC97_WRITE));
+ continue;
+ }
+ udelay(20);
+ }
+ if (!block) {
+ pr_debug("accesscodecsemaphore: try unlock\n");
+ block = 1;
+ goto unlock;
+ }
+ return 0;
+}
+
+static void
+releasecodecaccess(struct trident_card *card)
+{
+ unsigned long wcontrol;
+ wcontrol = inl(TRID_REG(card, ALI_AC97_WRITE));
+ outl((wcontrol & 0xffff1eff), TRID_REG(card, ALI_AC97_WRITE));
+}
+
+static int
+waitforstimertick(struct trident_card *card)
+{
+ unsigned long chk1, chk2;
+ unsigned int wcount = 0xffff;
+ chk1 = inl(TRID_REG(card, ALI_STIMER));
+
+ while (1) {
+ chk2 = inl(TRID_REG(card, ALI_STIMER));
+ if ((wcount > 0) && chk1 != chk2)
+ return 1;
+ if (wcount <= 0)
+ break;
+ udelay(50);
+ }
+ return 0;
+}
+
+/* Read AC97 codec registers for ALi*/
+static u16
+ali_ac97_get(struct trident_card *card, int secondary, u8 reg)
+{
+ unsigned int address, mask;
+ unsigned int ncount;
+ unsigned long aud_reg;
+ u32 data;
+ u16 wcontrol;
+ unsigned long flags;
+
+ if (!card)
+ BUG();
+
+ address = ALI_AC97_READ;
+ if (card->revision == ALI_5451_V02) {
+ address = ALI_AC97_WRITE;
+ }
+ mask = ALI_AC97_READ_ACTION | ALI_AC97_AUDIO_BUSY;
+ if (secondary)
+ mask |= ALI_AC97_SECONDARY;
+
+ spin_lock_irqsave(&card->lock, flags);
+
+ if (!acquirecodecaccess(card))
+ printk(KERN_ERR "access codec fail\n");
+
+ wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
+ wcontrol &= 0xfe00;
+ wcontrol |= (0x8000 | reg);
+ outw(wcontrol, TRID_REG(card, ALI_AC97_WRITE));
+
+ data = (mask | (reg & AC97_REG_ADDR));
+
+ if (!waitforstimertick(card)) {
+ printk(KERN_ERR "ali_ac97_read: BIT_CLOCK is dead\n");
+ goto releasecodec;
+ }
+
+ udelay(20);
+
+ ncount = 10;
+
+ while (1) {
+ if ((inw(TRID_REG(card, ALI_AC97_WRITE)) & ALI_AC97_BUSY_READ)
+ != 0)
+ break;
+ if (ncount <= 0)
+ break;
+ if (ncount-- == 1) {
+ pr_debug("ali_ac97_read :try clear busy flag\n");
+ aud_reg = inl(TRID_REG(card, ALI_AC97_WRITE));
+ outl((aud_reg & 0xffff7fff),
+ TRID_REG(card, ALI_AC97_WRITE));
+ }
+ udelay(10);
+ }
+
+ data = inl(TRID_REG(card, address));
+
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ return ((u16) (data >> 16));
+
+ releasecodec:
+ releasecodecaccess(card);
+ spin_unlock_irqrestore(&card->lock, flags);
+ printk(KERN_ERR "ali_ac97_read: AC97 CODEC read timed out.\n");
+ return 0;
+}
+
+/* Write AC97 codec registers for hulei*/
+static void
+ali_ac97_set(struct trident_card *card, int secondary, u8 reg, u16 val)
+{
+ unsigned int address, mask;
+ unsigned int ncount;
+ u32 data;
+ u16 wcontrol;
+ unsigned long flags;
+
+ data = ((u32) val) << 16;
+
+ if (!card)
+ BUG();
+
+ address = ALI_AC97_WRITE;
+ mask = ALI_AC97_WRITE_ACTION | ALI_AC97_AUDIO_BUSY;
+ if (secondary)
+ mask |= ALI_AC97_SECONDARY;
+ if (card->revision == ALI_5451_V02)
+ mask |= ALI_AC97_WRITE_MIXER_REGISTER;
+
+ spin_lock_irqsave(&card->lock, flags);
+ if (!acquirecodecaccess(card))
+ printk(KERN_ERR "ali_ac97_write: access codec fail\n");
+
+ wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
+ wcontrol &= 0xff00;
+ wcontrol |= (0x8100 | reg); /* bit 8=1: (ali1535 )reserved/ */
+ /* ali1535+ write */
+ outl((data | wcontrol), TRID_REG(card, ALI_AC97_WRITE));
+
+ if (!waitforstimertick(card)) {
+ printk(KERN_ERR "BIT_CLOCK is dead\n");
+ goto releasecodec;
+ }
+
+ ncount = 10;
+ while (1) {
+ wcontrol = inw(TRID_REG(card, ALI_AC97_WRITE));
+ if (!(wcontrol & 0x8000))
+ break;
+ if (ncount <= 0)
+ break;
+ if (ncount-- == 1) {
+ pr_debug("ali_ac97_set :try clear busy flag!!\n");
+ outw(wcontrol & 0x7fff,
+ TRID_REG(card, ALI_AC97_WRITE));
+ }
+ udelay(10);
+ }
+
+ releasecodec:
+ releasecodecaccess(card);
+ spin_unlock_irqrestore(&card->lock, flags);
+ return;
+}
+
+static void
+ali_enable_special_channel(struct trident_state *stat)
+{
+ struct trident_card *card = stat->card;
+ unsigned long s_channels;
+
+ s_channels = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ s_channels |= (1 << stat->dmabuf.channel->num);
+ outl(s_channels, TRID_REG(card, ALI_GLOBAL_CONTROL));
+}
+
+static u16
+ali_ac97_read(struct ac97_codec *codec, u8 reg)
+{
+ int id;
+ u16 data;
+ struct trident_card *card = NULL;
+
+ /* Added by Matt Wu */
+ if (!codec)
+ BUG();
+
+ card = (struct trident_card *) codec->private_data;
+
+ if (!card->mixer_regs_ready)
+ return ali_ac97_get(card, codec->id, reg);
+
+ /*
+ * FIXME: need to stop this caching some registers
+ */
+ if (codec->id)
+ id = 1;
+ else
+ id = 0;
+
+ data = card->mixer_regs[reg / 2][id];
+ return data;
+}
+
+static void
+ali_ac97_write(struct ac97_codec *codec, u8 reg, u16 val)
+{
+ int id;
+ struct trident_card *card;
+
+ /* Added by Matt Wu */
+ if (!codec)
+ BUG();
+
+ card = (struct trident_card *) codec->private_data;
+
+ if (!card->mixer_regs_ready) {
+ ali_ac97_set(card, codec->id, reg, val);
+ return;
+ }
+
+ if (codec->id)
+ id = 1;
+ else
+ id = 0;
+
+ card->mixer_regs[reg / 2][id] = val;
+ ali_ac97_set(card, codec->id, reg, val);
+}
+
+/*
+flag: ALI_SPDIF_OUT_TO_SPDIF_OUT
+ ALI_PCM_TO_SPDIF_OUT
+*/
+
+static void
+ali_setup_spdif_out(struct trident_card *card, int flag)
+{
+ unsigned long spdif;
+ unsigned char ch;
+
+ char temp;
+ struct pci_dev *pci_dev = NULL;
+
+ pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
+ pci_dev);
+ if (pci_dev == NULL)
+ return;
+ pci_read_config_byte(pci_dev, 0x61, &temp);
+ temp |= 0x40;
+ pci_write_config_byte(pci_dev, 0x61, temp);
+ pci_read_config_byte(pci_dev, 0x7d, &temp);
+ temp |= 0x01;
+ pci_write_config_byte(pci_dev, 0x7d, temp);
+ pci_read_config_byte(pci_dev, 0x7e, &temp);
+ temp &= (~0x20);
+ temp |= 0x10;
+ pci_write_config_byte(pci_dev, 0x7e, temp);
+
+ ch = inb(TRID_REG(card, ALI_SCTRL));
+ outb(ch | ALI_SPDIF_OUT_ENABLE, TRID_REG(card, ALI_SCTRL));
+ ch = inb(TRID_REG(card, ALI_SPDIF_CTRL));
+ outb(ch & ALI_SPDIF_OUT_CH_STATUS, TRID_REG(card, ALI_SPDIF_CTRL));
+
+ if (flag & ALI_SPDIF_OUT_TO_SPDIF_OUT) {
+ spdif = inw(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ spdif |= ALI_SPDIF_OUT_CH_ENABLE;
+ spdif &= ALI_SPDIF_OUT_SEL_SPDIF;
+ outw(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
+ spdif = inw(TRID_REG(card, ALI_SPDIF_CS));
+ if (flag & ALI_SPDIF_OUT_NON_PCM)
+ spdif |= 0x0002;
+ else
+ spdif &= (~0x0002);
+ outw(spdif, TRID_REG(card, ALI_SPDIF_CS));
+ } else {
+ spdif = inw(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ spdif |= ALI_SPDIF_OUT_SEL_PCM;
+ outw(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
+ }
+}
+
+static void
+ali_disable_special_channel(struct trident_card *card, int ch)
+{
+ unsigned long sc;
+
+ sc = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ sc &= ~(1 << ch);
+ outl(sc, TRID_REG(card, ALI_GLOBAL_CONTROL));
+}
+
+static void
+ali_disable_spdif_in(struct trident_card *card)
+{
+ unsigned long spdif;
+
+ spdif = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ spdif &= (~ALI_SPDIF_IN_SUPPORT);
+ outl(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
+
+ ali_disable_special_channel(card, ALI_SPDIF_IN_CHANNEL);
+}
+
+static void
+ali_setup_spdif_in(struct trident_card *card)
+{
+ unsigned long spdif;
+
+ //Set SPDIF IN Supported
+ spdif = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ spdif |= ALI_SPDIF_IN_SUPPORT;
+ outl(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
+
+ //Set SPDIF IN Rec
+ spdif = inl(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ spdif |= ALI_SPDIF_IN_CH_ENABLE;
+ outl(spdif, TRID_REG(card, ALI_GLOBAL_CONTROL));
+
+ spdif = inb(TRID_REG(card, ALI_SPDIF_CTRL));
+ spdif |= ALI_SPDIF_IN_CH_STATUS;
+ outb(spdif, TRID_REG(card, ALI_SPDIF_CTRL));
+/*
+ spdif = inb(TRID_REG(card, ALI_SPDIF_CTRL));
+ spdif |= ALI_SPDIF_IN_FUNC_ENABLE;
+ outb(spdif, TRID_REG(card, ALI_SPDIF_CTRL));
+*/
+}
+
+static void
+ali_delay(struct trident_card *card, int interval)
+{
+ unsigned long begintimer, currenttimer;
+
+ begintimer = inl(TRID_REG(card, ALI_STIMER));
+ currenttimer = inl(TRID_REG(card, ALI_STIMER));
+
+ while (currenttimer < begintimer + interval)
+ currenttimer = inl(TRID_REG(card, ALI_STIMER));
+}
+
+static void
+ali_detect_spdif_rate(struct trident_card *card)
+{
+ u16 wval = 0;
+ u16 count = 0;
+ u8 bval = 0, R1 = 0, R2 = 0;
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CTRL));
+ bval |= 0x02;
+ outb(bval, TRID_REG(card, ALI_SPDIF_CTRL));
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CTRL + 1));
+ bval |= 0x1F;
+ outb(bval, TRID_REG(card, ALI_SPDIF_CTRL + 1));
+
+ while (((R1 < 0x0B) || (R1 > 0x0E)) && (R1 != 0x12) &&
+ count <= 50000) {
+ count++;
+
+ ali_delay(card, 6);
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CTRL + 1));
+ R1 = bval & 0x1F;
+ }
+
+ if (count > 50000) {
+ printk(KERN_WARNING "trident: Error in "
+ "ali_detect_spdif_rate!\n");
+ return;
+ }
+
+ count = 0;
+
+ while (count <= 50000) {
+ count++;
+
+ ali_delay(card, 6);
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CTRL + 1));
+ R2 = bval & 0x1F;
+
+ if (R2 != R1)
+ R1 = R2;
+ else
+ break;
+ }
+
+ if (count > 50000) {
+ printk(KERN_WARNING "trident: Error in "
+ "ali_detect_spdif_rate!\n");
+ return;
+ }
+
+ switch (R2) {
+ case 0x0b:
+ case 0x0c:
+ case 0x0d:
+ case 0x0e:
+ wval = inw(TRID_REG(card, ALI_SPDIF_CTRL + 2));
+ wval &= 0xE0F0;
+ wval |= (u16) 0x09 << 8 | (u16) 0x05;
+ outw(wval, TRID_REG(card, ALI_SPDIF_CTRL + 2));
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CS + 3)) & 0xF0;
+ outb(bval | 0x02, TRID_REG(card, ALI_SPDIF_CS + 3));
+ break;
+
+ case 0x12:
+ wval = inw(TRID_REG(card, ALI_SPDIF_CTRL + 2));
+ wval &= 0xE0F0;
+ wval |= (u16) 0x0E << 8 | (u16) 0x08;
+ outw(wval, TRID_REG(card, ALI_SPDIF_CTRL + 2));
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CS + 3)) & 0xF0;
+ outb(bval | 0x03, TRID_REG(card, ALI_SPDIF_CS + 3));
+ break;
+
+ default:
+ break;
+ }
+
+}
+
+static unsigned int
+ali_get_spdif_in_rate(struct trident_card *card)
+{
+ u32 dwRate = 0;
+ u8 bval = 0;
+
+ ali_detect_spdif_rate(card);
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CTRL));
+ bval &= 0x7F;
+ bval |= 0x40;
+ outb(bval, TRID_REG(card, ALI_SPDIF_CTRL));
+
+ bval = inb(TRID_REG(card, ALI_SPDIF_CS + 3));
+ bval &= 0x0F;
+
+ switch (bval) {
+ case 0:
+ dwRate = 44100;
+ break;
+ case 1:
+ dwRate = 48000;
+ break;
+ case 2:
+ dwRate = 32000;
+ break;
+ default:
+ // Error occurs
+ break;
+ }
+
+ return dwRate;
+
+}
+
+static int
+ali_close_multi_channels(void)
+{
+ char temp = 0;
+ struct pci_dev *pci_dev = NULL;
+
+ pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
+ pci_dev);
+ if (pci_dev == NULL)
+ return -1;
+ pci_read_config_byte(pci_dev, 0x59, &temp);
+ temp &= ~0x80;
+ pci_write_config_byte(pci_dev, 0x59, temp);
+
+ pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101,
+ pci_dev);
+ if (pci_dev == NULL)
+ return -1;
+
+ pci_read_config_byte(pci_dev, 0xB8, &temp);
+ temp &= ~0x20;
+ pci_write_config_byte(pci_dev, 0xB8, temp);
+
+ return 0;
+}
+
+static int
+ali_setup_multi_channels(struct trident_card *card, int chan_nums)
+{
+ unsigned long dwValue;
+ char temp = 0;
+ struct pci_dev *pci_dev = NULL;
+
+ pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
+ pci_dev);
+ if (pci_dev == NULL)
+ return -1;
+ pci_read_config_byte(pci_dev, 0x59, &temp);
+ temp |= 0x80;
+ pci_write_config_byte(pci_dev, 0x59, temp);
+
+ pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101,
+ pci_dev);
+ if (pci_dev == NULL)
+ return -1;
+ pci_read_config_byte(pci_dev, (int) 0xB8, &temp);
+ temp |= 0x20;
+ pci_write_config_byte(pci_dev, (int) 0xB8, (u8) temp);
+ if (chan_nums == 6) {
+ dwValue = inl(TRID_REG(card, ALI_SCTRL)) | 0x000f0000;
+ outl(dwValue, TRID_REG(card, ALI_SCTRL));
+ mdelay(4);
+ dwValue = inl(TRID_REG(card, ALI_SCTRL));
+ if (dwValue & 0x2000000) {
+ ali_ac97_write(card->ac97_codec[0], 0x02, 8080);
+ ali_ac97_write(card->ac97_codec[0], 0x36, 0);
+ ali_ac97_write(card->ac97_codec[0], 0x38, 0);
+ /*
+ * On a board with a single codec you won't get the
+ * surround. On other boards configure it.
+ */
+ if (card->ac97_codec[1] != NULL) {
+ ali_ac97_write(card->ac97_codec[1], 0x36, 0);
+ ali_ac97_write(card->ac97_codec[1], 0x38, 0);
+ ali_ac97_write(card->ac97_codec[1], 0x02, 0x0606);
+ ali_ac97_write(card->ac97_codec[1], 0x18, 0x0303);
+ ali_ac97_write(card->ac97_codec[1], 0x74, 0x3);
+ }
+ return 1;
+ }
+ }
+ return -EINVAL;
+}
+
+static void
+ali_free_pcm_channel(struct trident_card *card, unsigned int channel)
+{
+ int bank;
+
+ if (channel > 31)
+ return;
+
+ bank = channel >> 5;
+ channel = channel & 0x1f;
+
+ card->banks[bank].bitmap &= ~(1 << (channel));
+}
+
+static int
+ali_allocate_other_states_resources(struct trident_state *state, int chan_nums)
+{
+ struct trident_card *card = state->card;
+ struct trident_state *s;
+ int i, state_count = 0;
+ struct trident_pcm_bank *bank;
+ struct trident_channel *channel;
+ unsigned long num;
+
+ bank = &card->banks[BANK_A];
+
+ if (chan_nums != 6)
+ return 0;
+
+ for (i = 0; (i < ALI_CHANNELS) && (state_count != 4); i++) {
+ if (card->states[i])
+ continue;
+
+ num = ali_multi_channels_5_1[state_count];
+ if (!(bank->bitmap & (1 << num))) {
+ bank->bitmap |= 1 << num;
+ channel = &bank->channels[num];
+ channel->num = num;
+ } else {
+ state_count--;
+ for (; state_count >= 0; state_count--) {
+ kfree(state->other_states[state_count]);
+ num = ali_multi_channels_5_1[state_count];
+ ali_free_pcm_channel(card, num);
+ }
+ return -EBUSY;
+ }
+ s = card->states[i] = kmalloc(sizeof(*state), GFP_KERNEL);
+ if (!s) {
+ num = ali_multi_channels_5_1[state_count];
+ ali_free_pcm_channel(card, num);
+ state_count--;
+ for (; state_count >= 0; state_count--) {
+ num = ali_multi_channels_5_1[state_count];
+ ali_free_pcm_channel(card, num);
+ kfree(state->other_states[state_count]);
+ }
+ return -ENOMEM;
+ }
+ memset(s, 0, sizeof(*state));
+
+ s->dmabuf.channel = channel;
+ s->dmabuf.ossfragshift = s->dmabuf.ossmaxfrags =
+ s->dmabuf.subdivision = 0;
+ init_waitqueue_head(&s->dmabuf.wait);
+ s->magic = card->magic;
+ s->card = card;
+ s->virt = i;
+ ali_enable_special_channel(s);
+ state->other_states[state_count++] = s;
+ }
+
+ if (state_count != 4) {
+ state_count--;
+ for (; state_count >= 0; state_count--) {
+ kfree(state->other_states[state_count]);
+ num = ali_multi_channels_5_1[state_count];
+ ali_free_pcm_channel(card, num);
+ }
+ return -EBUSY;
+ }
+ return 0;
+}
+
+static void
+ali_save_regs(struct trident_card *card)
+{
+ unsigned long flags;
+ int i, j;
+
+ spin_lock_irqsave(&card->lock, flags);
+
+ ali_registers.global_regs[0x2c] = inl(TRID_REG(card, T4D_MISCINT));
+ //ali_registers.global_regs[0x20] = inl(TRID_REG(card,T4D_START_A));
+ ali_registers.global_regs[0x21] = inl(TRID_REG(card, T4D_STOP_A));
+
+ //disable all IRQ bits
+ outl(ALI_DISABLE_ALL_IRQ, TRID_REG(card, T4D_MISCINT));
+
+ for (i = 1; i < ALI_MIXER_REGS; i++)
+ ali_registers.mixer_regs[i] = ali_ac97_read(card->ac97_codec[0],
+ i * 2);
+
+ for (i = 0; i < ALI_GLOBAL_REGS; i++) {
+ if ((i * 4 == T4D_MISCINT) || (i * 4 == T4D_STOP_A))
+ continue;
+ ali_registers.global_regs[i] = inl(TRID_REG(card, i * 4));
+ }
+
+ for (i = 0; i < ALI_CHANNELS; i++) {
+ outb(i, TRID_REG(card, T4D_LFO_GC_CIR));
+ for (j = 0; j < ALI_CHANNEL_REGS; j++)
+ ali_registers.channel_regs[i][j] = inl(TRID_REG(card,
+ j * 4 + 0xe0));
+ }
+
+ //Stop all HW channel
+ outl(ALI_STOP_ALL_CHANNELS, TRID_REG(card, T4D_STOP_A));
+
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static void
+ali_restore_regs(struct trident_card *card)
+{
+ unsigned long flags;
+ int i, j;
+
+ spin_lock_irqsave(&card->lock, flags);
+
+ for (i = 1; i < ALI_MIXER_REGS; i++)
+ ali_ac97_write(card->ac97_codec[0], i * 2,
+ ali_registers.mixer_regs[i]);
+
+ for (i = 0; i < ALI_CHANNELS; i++) {
+ outb(i, TRID_REG(card, T4D_LFO_GC_CIR));
+ for (j = 0; j < ALI_CHANNEL_REGS; j++)
+ outl(ali_registers.channel_regs[i][j],
+ TRID_REG(card, j * 4 + 0xe0));
+ }
+
+ for (i = 0; i < ALI_GLOBAL_REGS; i++) {
+ if ((i * 4 == T4D_MISCINT) || (i * 4 == T4D_STOP_A) ||
+ (i * 4 == T4D_START_A))
+ continue;
+ outl(ali_registers.global_regs[i], TRID_REG(card, i * 4));
+ }
+
+ //start HW channel
+ outl(ali_registers.global_regs[0x20], TRID_REG(card, T4D_START_A));
+ //restore IRQ enable bits
+ outl(ali_registers.global_regs[0x2c], TRID_REG(card, T4D_MISCINT));
+
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static int
+trident_suspend(struct pci_dev *dev, pm_message_t unused)
+{
+ struct trident_card *card = pci_get_drvdata(dev);
+
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ ali_save_regs(card);
+ }
+ return 0;
+}
+
+static int
+trident_resume(struct pci_dev *dev)
+{
+ struct trident_card *card = pci_get_drvdata(dev);
+
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ ali_restore_regs(card);
+ }
+ return 0;
+}
+
+static struct trident_channel *
+ali_alloc_pcm_channel(struct trident_card *card)
+{
+ struct trident_pcm_bank *bank;
+ int idx;
+
+ bank = &card->banks[BANK_A];
+
+ if (inl(TRID_REG(card, ALI_GLOBAL_CONTROL)) &
+ (ALI_SPDIF_OUT_CH_ENABLE)) {
+ idx = ALI_SPDIF_OUT_CHANNEL;
+ if (!(bank->bitmap & (1 << idx))) {
+ struct trident_channel *channel = &bank->channels[idx];
+ bank->bitmap |= 1 << idx;
+ channel->num = idx;
+ return channel;
+ }
+ }
+
+ for (idx = ALI_PCM_OUT_CHANNEL_FIRST; idx <= ALI_PCM_OUT_CHANNEL_LAST;
+ idx++) {
+ if (!(bank->bitmap & (1 << idx))) {
+ struct trident_channel *channel = &bank->channels[idx];
+ bank->bitmap |= 1 << idx;
+ channel->num = idx;
+ return channel;
+ }
+ }
+
+ /* no more free channels avaliable */
+#if 0
+ printk(KERN_ERR "ali: no more channels available on Bank A.\n");
+#endif /* 0 */
+ return NULL;
+}
+
+static struct trident_channel *
+ali_alloc_rec_pcm_channel(struct trident_card *card)
+{
+ struct trident_pcm_bank *bank;
+ int idx;
+
+ if (inl(TRID_REG(card, ALI_GLOBAL_CONTROL)) & ALI_SPDIF_IN_SUPPORT)
+ idx = ALI_SPDIF_IN_CHANNEL;
+ else
+ idx = ALI_PCM_IN_CHANNEL;
+
+ bank = &card->banks[BANK_A];
+
+ if (!(bank->bitmap & (1 << idx))) {
+ struct trident_channel *channel = &bank->channels[idx];
+ bank->bitmap |= 1 << idx;
+ channel->num = idx;
+ return channel;
+ }
+
+ /* no free recordable channels avaliable */
+#if 0
+ printk(KERN_ERR "ali: no recordable channels available on Bank A.\n");
+#endif /* 0 */
+ return NULL;
+}
+
+static void
+ali_set_spdif_out_rate(struct trident_card *card, unsigned int rate)
+{
+ unsigned char ch_st_sel;
+ unsigned short status_rate;
+
+ switch (rate) {
+ case 44100:
+ status_rate = 0;
+ break;
+ case 32000:
+ status_rate = 0x300;
+ break;
+ case 48000:
+ default:
+ status_rate = 0x200;
+ break;
+ }
+
+ /* select spdif_out */
+ ch_st_sel = inb(TRID_REG(card, ALI_SPDIF_CTRL)) & ALI_SPDIF_OUT_CH_STATUS;
+
+ ch_st_sel |= 0x80; /* select right */
+ outb(ch_st_sel, TRID_REG(card, ALI_SPDIF_CTRL));
+ outb(status_rate | 0x20, TRID_REG(card, ALI_SPDIF_CS + 2));
+
+ ch_st_sel &= (~0x80); /* select left */
+ outb(ch_st_sel, TRID_REG(card, ALI_SPDIF_CTRL));
+ outw(status_rate | 0x10, TRID_REG(card, ALI_SPDIF_CS + 2));
+}
+
+static void
+ali_address_interrupt(struct trident_card *card)
+{
+ int i, channel;
+ struct trident_state *state;
+ u32 mask, channel_mask;
+
+ mask = trident_get_interrupt_mask(card, 0);
+ for (i = 0; i < NR_HW_CH; i++) {
+ if ((state = card->states[i]) == NULL)
+ continue;
+ channel = state->dmabuf.channel->num;
+ if ((channel_mask = 1 << channel) & mask) {
+ mask &= ~channel_mask;
+ trident_ack_channel_interrupt(card, channel);
+ udelay(100);
+ state->dmabuf.update_flag |= ALI_ADDRESS_INT_UPDATE;
+ trident_update_ptr(state);
+ }
+ }
+ if (mask) {
+ for (i = 0; i < NR_HW_CH; i++) {
+ if (mask & (1 << i)) {
+ printk("ali: spurious channel irq %d.\n", i);
+ trident_ack_channel_interrupt(card, i);
+ trident_stop_voice(card, i);
+ trident_disable_voice_irq(card, i);
+ }
+ }
+ }
+}
+
+/* Updating the values of counters of other_states' DMAs without lock
+protection is no harm because all DMAs of multi-channels and interrupt
+depend on a master state's DMA, and changing the counters of the master
+state DMA is protected by a spinlock.
+*/
+static int
+ali_write_5_1(struct trident_state *state, const char __user *buf,
+ int cnt_for_multi_channel, unsigned int *copy_count,
+ unsigned int *state_cnt)
+{
+
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct dmabuf *dmabuf_temp;
+ const char __user *buffer = buf;
+ unsigned swptr, other_dma_nums, sample_s;
+ unsigned int i, loop;
+
+ other_dma_nums = 4;
+ sample_s = sample_size[dmabuf->fmt] >> 1;
+ swptr = dmabuf->swptr;
+
+ if ((i = state->multi_channels_adjust_count) > 0) {
+ if (i == 1) {
+ if (copy_from_user(dmabuf->rawbuf + swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+ i--;
+ (*state_cnt) += sample_s;
+ state->multi_channels_adjust_count++;
+ } else
+ i = i - (state->chans_num - other_dma_nums);
+ for (; (i < other_dma_nums) && (cnt_for_multi_channel > 0); i++) {
+ dmabuf_temp = &state->other_states[i]->dmabuf;
+ if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+ }
+ if (cnt_for_multi_channel == 0)
+ state->multi_channels_adjust_count += i;
+ }
+ if (cnt_for_multi_channel > 0) {
+ loop = cnt_for_multi_channel / (state->chans_num * sample_s);
+ for (i = 0; i < loop; i++) {
+ if (copy_from_user(dmabuf->rawbuf + swptr, buffer,
+ sample_s * 2))
+ return -EFAULT;
+ seek_offset(swptr, buffer, cnt_for_multi_channel,
+ sample_s * 2, *copy_count);
+ (*state_cnt) += (sample_s * 2);
+
+ dmabuf_temp = &state->other_states[0]->dmabuf;
+ if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+
+ dmabuf_temp = &state->other_states[1]->dmabuf;
+ if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+
+ dmabuf_temp = &state->other_states[2]->dmabuf;
+ if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+
+ dmabuf_temp = &state->other_states[3]->dmabuf;
+ if (copy_from_user(dmabuf_temp->rawbuf + dmabuf_temp->swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(dmabuf_temp->swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+ }
+
+ if (cnt_for_multi_channel > 0) {
+ state->multi_channels_adjust_count = cnt_for_multi_channel / sample_s;
+
+ if (copy_from_user(dmabuf->rawbuf + swptr, buffer, sample_s))
+ return -EFAULT;
+ seek_offset(swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+ (*state_cnt) += sample_s;
+
+ if (cnt_for_multi_channel > 0) {
+ if (copy_from_user(dmabuf->rawbuf + swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(swptr, buffer, cnt_for_multi_channel,
+ sample_s, *copy_count);
+ (*state_cnt) += sample_s;
+
+ if (cnt_for_multi_channel > 0) {
+ int diff = state->chans_num - other_dma_nums;
+ loop = state->multi_channels_adjust_count - diff;
+ for (i = 0; i < loop; i++) {
+ dmabuf_temp = &state->other_states[i]->dmabuf;
+ if (copy_from_user(dmabuf_temp->rawbuf +
+ dmabuf_temp->swptr,
+ buffer, sample_s))
+ return -EFAULT;
+ seek_offset(dmabuf_temp->swptr, buffer,
+ cnt_for_multi_channel,
+ sample_s, *copy_count);
+ }
+ }
+ }
+ } else
+ state->multi_channels_adjust_count = 0;
+ }
+ for (i = 0; i < other_dma_nums; i++) {
+ dmabuf_temp = &state->other_states[i]->dmabuf;
+ dmabuf_temp->swptr = dmabuf_temp->swptr % dmabuf_temp->dmasize;
+ }
+ return *state_cnt;
+}
+
+static void
+ali_free_other_states_resources(struct trident_state *state)
+{
+ int i;
+ struct trident_card *card = state->card;
+ struct trident_state *s;
+ unsigned other_states_count;
+
+ other_states_count = state->chans_num - 2; /* except PCM L/R channels */
+ for (i = 0; i < other_states_count; i++) {
+ s = state->other_states[i];
+ dealloc_dmabuf(&s->dmabuf, card->pci_dev);
+ ali_disable_special_channel(s->card, s->dmabuf.channel->num);
+ state->card->free_pcm_channel(s->card, s->dmabuf.channel->num);
+ card->states[s->virt] = NULL;
+ kfree(s);
+ }
+}
+
+static struct proc_dir_entry *res;
+
+static int
+ali_write_proc(struct file *file, const char __user *buffer, unsigned long count, void *data)
+{
+ struct trident_card *card = (struct trident_card *) data;
+ unsigned long flags;
+ char c;
+
+ if (count < 0)
+ return -EINVAL;
+ if (count == 0)
+ return 0;
+ if (get_user(c, buffer))
+ return -EFAULT;
+
+ spin_lock_irqsave(&card->lock, flags);
+ switch (c) {
+ case '0':
+ ali_setup_spdif_out(card, ALI_PCM_TO_SPDIF_OUT);
+ ali_disable_special_channel(card, ALI_SPDIF_OUT_CHANNEL);
+ break;
+ case '1':
+ ali_setup_spdif_out(card, ALI_SPDIF_OUT_TO_SPDIF_OUT |
+ ALI_SPDIF_OUT_PCM);
+ break;
+ case '2':
+ ali_setup_spdif_out(card, ALI_SPDIF_OUT_TO_SPDIF_OUT |
+ ALI_SPDIF_OUT_NON_PCM);
+ break;
+ case '3':
+ ali_disable_spdif_in(card); //default
+ break;
+ case '4':
+ ali_setup_spdif_in(card);
+ break;
+ }
+ spin_unlock_irqrestore(&card->lock, flags);
+
+ return count;
+}
+
+/* OSS /dev/mixer file operation methods */
+static int
+trident_open_mixdev(struct inode *inode, struct file *file)
+{
+ int i = 0;
+ int minor = iminor(inode);
+ struct trident_card *card = devs;
+
+ for (card = devs; card != NULL; card = card->next)
+ for (i = 0; i < NR_AC97; i++)
+ if (card->ac97_codec[i] != NULL &&
+ card->ac97_codec[i]->dev_mixer == minor)
+ goto match;
+
+ if (!card) {
+ return -ENODEV;
+ }
+ match:
+ file->private_data = card->ac97_codec[i];
+
+ return nonseekable_open(inode, file);
+}
+
+static int
+trident_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct ac97_codec *codec = (struct ac97_codec *) file->private_data;
+
+ return codec->mixer_ioctl(codec, cmd, arg);
+}
+
+static /*const */ struct file_operations trident_mixer_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .ioctl = trident_ioctl_mixdev,
+ .open = trident_open_mixdev,
+};
+
+static int
+ali_reset_5451(struct trident_card *card)
+{
+ struct pci_dev *pci_dev = NULL;
+ unsigned int dwVal;
+ unsigned short wCount, wReg;
+
+ pci_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
+ pci_dev);
+ if (pci_dev == NULL)
+ return -1;
+
+ pci_read_config_dword(pci_dev, 0x7c, &dwVal);
+ pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
+ udelay(5000);
+ pci_read_config_dword(pci_dev, 0x7c, &dwVal);
+ pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
+ udelay(5000);
+
+ pci_dev = card->pci_dev;
+ if (pci_dev == NULL)
+ return -1;
+
+ pci_read_config_dword(pci_dev, 0x44, &dwVal);
+ pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
+ udelay(500);
+ pci_read_config_dword(pci_dev, 0x44, &dwVal);
+ pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
+ udelay(5000);
+
+ /* TODO: recognize if we have a PM capable codec and only do this */
+ /* if the codec is PM capable */
+ wCount = 2000;
+ while (wCount--) {
+ wReg = ali_ac97_get(card, 0, AC97_POWER_CONTROL);
+ if ((wReg & 0x000f) == 0x000f)
+ return 0;
+ udelay(5000);
+ }
+ /* This is non fatal if you have a non PM capable codec.. */
+ return 0;
+}
+
+/* AC97 codec initialisation. */
+static int __devinit
+trident_ac97_init(struct trident_card *card)
+{
+ int num_ac97 = 0;
+ unsigned long ready_2nd = 0;
+ struct ac97_codec *codec;
+ int i = 0;
+
+ /* initialize controller side of AC link, and find out if secondary codes
+ really exist */
+ switch (card->pci_id) {
+ case PCI_DEVICE_ID_ALI_5451:
+ if (ali_reset_5451(card)) {
+ printk(KERN_ERR "trident_ac97_init: error "
+ "resetting 5451.\n");
+ return -1;
+ }
+ outl(0x80000001, TRID_REG(card, ALI_GLOBAL_CONTROL));
+ outl(0x00000000, TRID_REG(card, T4D_AINTEN_A));
+ outl(0xffffffff, TRID_REG(card, T4D_AINT_A));
+ outl(0x00000000, TRID_REG(card, T4D_MUSICVOL_WAVEVOL));
+ outb(0x10, TRID_REG(card, ALI_MPUR2));
+ ready_2nd = inl(TRID_REG(card, ALI_SCTRL));
+ ready_2nd &= 0x3fff;
+ outl(ready_2nd | PCMOUT | 0x8000, TRID_REG(card, ALI_SCTRL));
+ ready_2nd = inl(TRID_REG(card, ALI_SCTRL));
+ ready_2nd &= SI_AC97_SECONDARY_READY;
+ if (card->revision < ALI_5451_V02)
+ ready_2nd = 0;
+ break;
+ case PCI_DEVICE_ID_SI_7018:
+ /* disable AC97 GPIO interrupt */
+ outl(0x00, TRID_REG(card, SI_AC97_GPIO));
+ /* when power up the AC link is in cold reset mode so stop it */
+ outl(PCMOUT | SURROUT | CENTEROUT | LFEOUT | SECONDARY_ID,
+ TRID_REG(card, SI_SERIAL_INTF_CTRL));
+ /* it take a long time to recover from a cold reset */
+ /* (especially when you have more than one codec) */
+ udelay(2000);
+ ready_2nd = inl(TRID_REG(card, SI_SERIAL_INTF_CTRL));
+ ready_2nd &= SI_AC97_SECONDARY_READY;
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_DX:
+ /* playback on */
+ outl(DX_AC97_PLAYBACK, TRID_REG(card, DX_ACR2_AC97_COM_STAT));
+ break;
+ case PCI_DEVICE_ID_TRIDENT_4DWAVE_NX:
+ /* enable AC97 Output Slot 3,4 (PCM Left/Right Playback) */
+ outl(NX_AC97_PCM_OUTPUT, TRID_REG(card, NX_ACR0_AC97_COM_STAT));
+ ready_2nd = inl(TRID_REG(card, NX_ACR0_AC97_COM_STAT));
+ ready_2nd &= NX_AC97_SECONDARY_READY;
+ break;
+ case PCI_DEVICE_ID_INTERG_5050:
+ /* disable AC97 GPIO interrupt */
+ outl(0x00, TRID_REG(card, SI_AC97_GPIO));
+ /* when power up, the AC link is in cold reset mode, so stop it */
+ outl(PCMOUT | SURROUT | CENTEROUT | LFEOUT,
+ TRID_REG(card, SI_SERIAL_INTF_CTRL));
+ /* it take a long time to recover from a cold reset (especially */
+ /* when you have more than one codec) */
+ udelay(2000);
+ ready_2nd = inl(TRID_REG(card, SI_SERIAL_INTF_CTRL));
+ ready_2nd &= SI_AC97_SECONDARY_READY;
+ break;
+ }
+
+ for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
+ if ((codec = ac97_alloc_codec()) == NULL)
+ return -ENOMEM;
+
+ /* initialize some basic codec information, other fields */
+ /* will be filled in ac97_probe_codec */
+ codec->private_data = card;
+ codec->id = num_ac97;
+
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ codec->codec_read = ali_ac97_read;
+ codec->codec_write = ali_ac97_write;
+ } else {
+ codec->codec_read = trident_ac97_get;
+ codec->codec_write = trident_ac97_set;
+ }
+
+ if (ac97_probe_codec(codec) == 0)
+ break;
+
+ codec->dev_mixer = register_sound_mixer(&trident_mixer_fops, -1);
+ if (codec->dev_mixer < 0) {
+ printk(KERN_ERR "trident: couldn't register mixer!\n");
+ ac97_release_codec(codec);
+ break;
+ }
+
+ card->ac97_codec[num_ac97] = codec;
+
+ /* if there is no secondary codec at all, don't probe any more */
+ if (!ready_2nd)
+ break;
+ }
+
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
+ if (card->ac97_codec[num_ac97] == NULL)
+ break;
+ for (i = 0; i < 64; i++) {
+ u16 reg = ali_ac97_get(card, num_ac97, i * 2);
+ card->mixer_regs[i][num_ac97] = reg;
+ }
+ }
+ }
+ return num_ac97 + 1;
+}
+
+/* Gameport functions for the cards ADC gameport */
+
+static unsigned char
+trident_game_read(struct gameport *gameport)
+{
+ struct trident_card *card = gameport->port_data;
+ return inb(TRID_REG(card, T4D_GAME_LEG));
+}
+
+static void
+trident_game_trigger(struct gameport *gameport)
+{
+ struct trident_card *card = gameport->port_data;
+ outb(0xff, TRID_REG(card, T4D_GAME_LEG));
+}
+
+static int
+trident_game_cooked_read(struct gameport *gameport, int *axes, int *buttons)
+{
+ struct trident_card *card = gameport->port_data;
+ int i;
+
+ *buttons = (~inb(TRID_REG(card, T4D_GAME_LEG)) >> 4) & 0xf;
+
+ for (i = 0; i < 4; i++) {
+ axes[i] = inw(TRID_REG(card, T4D_GAME_AXD) + i * sizeof (u16));
+ if (axes[i] == 0xffff)
+ axes[i] = -1;
+ }
+
+ return 0;
+}
+
+static int
+trident_game_open(struct gameport *gameport, int mode)
+{
+ struct trident_card *card = gameport->port_data;
+
+ switch (mode) {
+ case GAMEPORT_MODE_COOKED:
+ outb(0x80, TRID_REG(card, T4D_GAME_CR));
+ msleep(20);
+ return 0;
+ case GAMEPORT_MODE_RAW:
+ outb(0x00, TRID_REG(card, T4D_GAME_CR));
+ return 0;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+static int __devinit
+trident_register_gameport(struct trident_card *card)
+{
+ struct gameport *gp;
+
+ card->gameport = gp = gameport_allocate_port();
+ if (!gp) {
+ printk(KERN_ERR "trident: can not allocate memory for gameport\n");
+ return -ENOMEM;
+ }
+
+ gameport_set_name(gp, "Trident 4DWave");
+ gameport_set_phys(gp, "pci%s/gameport0", pci_name(card->pci_dev));
+ gp->read = trident_game_read;
+ gp->trigger = trident_game_trigger;
+ gp->cooked_read = trident_game_cooked_read;
+ gp->open = trident_game_open;
+ gp->fuzz = 64;
+ gp->port_data = card;
+
+ gameport_register_port(gp);
+
+ return 0;
+}
+
+/* install the driver, we do not allocate hardware channel nor DMA buffer */
+/* now, they are defered until "ACCESS" time (in prog_dmabuf called by */
+/* open/read/write/ioctl/mmap) */
+static int __devinit
+trident_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
+{
+ unsigned long iobase;
+ struct trident_card *card;
+ u8 bits;
+ u8 revision;
+ int i = 0;
+ u16 temp;
+ struct pci_dev *pci_dev_m1533 = NULL;
+ int rc = -ENODEV;
+ u64 dma_mask;
+
+ if (pci_enable_device(pci_dev))
+ goto out;
+
+ if (pci_dev->device == PCI_DEVICE_ID_ALI_5451)
+ dma_mask = ALI_DMA_MASK;
+ else
+ dma_mask = TRIDENT_DMA_MASK;
+ if (pci_set_dma_mask(pci_dev, dma_mask)) {
+ printk(KERN_ERR "trident: architecture does not support"
+ " %s PCI busmaster DMA\n",
+ pci_dev->device == PCI_DEVICE_ID_ALI_5451 ?
+ "32-bit" : "30-bit");
+ goto out;
+ }
+ pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &revision);
+
+ if (pci_id->device == PCI_DEVICE_ID_INTERG_5050)
+ iobase = pci_resource_start(pci_dev, 1);
+ else
+ iobase = pci_resource_start(pci_dev, 0);
+
+ if (!request_region(iobase, 256, card_names[pci_id->driver_data])) {
+ printk(KERN_ERR "trident: can't allocate I/O space at "
+ "0x%4.4lx\n", iobase);
+ goto out;
+ }
+
+ rc = -ENOMEM;
+ if ((card = kmalloc(sizeof(*card), GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "trident: out of memory\n");
+ goto out_release_region;
+ }
+ memset(card, 0, sizeof (*card));
+
+ init_timer(&card->timer);
+ card->iobase = iobase;
+ card->pci_dev = pci_dev;
+ card->pci_id = pci_id->device;
+ card->revision = revision;
+ card->irq = pci_dev->irq;
+ card->next = devs;
+ card->magic = TRIDENT_CARD_MAGIC;
+ card->banks[BANK_A].addresses = &bank_a_addrs;
+ card->banks[BANK_A].bitmap = 0UL;
+ card->banks[BANK_B].addresses = &bank_b_addrs;
+ card->banks[BANK_B].bitmap = 0UL;
+
+ init_MUTEX(&card->open_sem);
+ spin_lock_init(&card->lock);
+ init_timer(&card->timer);
+
+ devs = card;
+
+ pci_set_master(pci_dev);
+
+ printk(KERN_INFO "trident: %s found at IO 0x%04lx, IRQ %d\n",
+ card_names[pci_id->driver_data], card->iobase, card->irq);
+
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ /* ALi channel Management */
+ card->alloc_pcm_channel = ali_alloc_pcm_channel;
+ card->alloc_rec_pcm_channel = ali_alloc_rec_pcm_channel;
+ card->free_pcm_channel = ali_free_pcm_channel;
+
+ card->address_interrupt = ali_address_interrupt;
+
+ /* Added by Matt Wu 01-05-2001 for spdif in */
+ card->multi_channel_use_count = 0;
+ card->rec_channel_use_count = 0;
+
+ /* ALi SPDIF OUT function */
+ if (card->revision == ALI_5451_V02) {
+ ali_setup_spdif_out(card, ALI_PCM_TO_SPDIF_OUT);
+ res = create_proc_entry("ALi5451", 0, NULL);
+ if (res) {
+ res->write_proc = ali_write_proc;
+ res->data = card;
+ }
+ }
+
+ /* Add H/W Volume Control By Matt Wu Jul. 06, 2001 */
+ card->hwvolctl = 0;
+ pci_dev_m1533 = pci_find_device(PCI_VENDOR_ID_AL,
+ PCI_DEVICE_ID_AL_M1533,
+ pci_dev_m1533);
+ rc = -ENODEV;
+ if (pci_dev_m1533 == NULL)
+ goto out_proc_fs;
+ pci_read_config_byte(pci_dev_m1533, 0x63, &bits);
+ if (bits & (1 << 5))
+ card->hwvolctl = 1;
+ if (card->hwvolctl) {
+ /* Clear m1533 pci cfg 78h bit 30 to zero, which makes
+ GPIO11/12/13 work as ACGP_UP/DOWN/MUTE. */
+ pci_read_config_byte(pci_dev_m1533, 0x7b, &bits);
+ bits &= 0xbf; /*clear bit 6 */
+ pci_write_config_byte(pci_dev_m1533, 0x7b, bits);
+ }
+ } else if (card->pci_id == PCI_DEVICE_ID_INTERG_5050) {
+ card->alloc_pcm_channel = cyber_alloc_pcm_channel;
+ card->alloc_rec_pcm_channel = cyber_alloc_pcm_channel;
+ card->free_pcm_channel = cyber_free_pcm_channel;
+ card->address_interrupt = cyber_address_interrupt;
+ cyber_init_ritual(card);
+ } else {
+ card->alloc_pcm_channel = trident_alloc_pcm_channel;
+ card->alloc_rec_pcm_channel = trident_alloc_pcm_channel;
+ card->free_pcm_channel = trident_free_pcm_channel;
+ card->address_interrupt = trident_address_interrupt;
+ }
+
+ /* claim our irq */
+ rc = -ENODEV;
+ if (request_irq(card->irq, &trident_interrupt, SA_SHIRQ,
+ card_names[pci_id->driver_data], card)) {
+ printk(KERN_ERR "trident: unable to allocate irq %d\n",
+ card->irq);
+ goto out_proc_fs;
+ }
+ /* register /dev/dsp */
+ if ((card->dev_audio = register_sound_dsp(&trident_audio_fops, -1)) < 0) {
+ printk(KERN_ERR "trident: couldn't register DSP device!\n");
+ goto out_free_irq;
+ }
+ card->mixer_regs_ready = 0;
+ /* initialize AC97 codec and register /dev/mixer */
+ if (trident_ac97_init(card) <= 0) {
+ /* unregister audio devices */
+ for (i = 0; i < NR_AC97; i++) {
+ if (card->ac97_codec[i] != NULL) {
+ struct ac97_codec* codec = card->ac97_codec[i];
+ unregister_sound_mixer(codec->dev_mixer);
+ ac97_release_codec(codec);
+ }
+ }
+ goto out_unregister_sound_dsp;
+ }
+ card->mixer_regs_ready = 1;
+ outl(0x00, TRID_REG(card, T4D_MUSICVOL_WAVEVOL));
+
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ /* Add H/W Volume Control By Matt Wu Jul. 06, 2001 */
+ if (card->hwvolctl) {
+ /* Enable GPIO IRQ (MISCINT bit 18h) */
+ temp = inw(TRID_REG(card, T4D_MISCINT + 2));
+ temp |= 0x0004;
+ outw(temp, TRID_REG(card, T4D_MISCINT + 2));
+
+ /* Enable H/W Volume Control GLOVAL CONTROL bit 0 */
+ temp = inw(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ temp |= 0x0001;
+ outw(temp, TRID_REG(card, ALI_GLOBAL_CONTROL));
+
+ }
+ if (card->revision == ALI_5451_V02)
+ ali_close_multi_channels();
+ /* edited by HMSEO for GT sound */
+#if defined(CONFIG_ALPHA_NAUTILUS) || defined(CONFIG_ALPHA_GENERIC)
+ {
+ u16 ac97_data;
+ extern struct hwrpb_struct *hwrpb;
+
+ if ((hwrpb->sys_type) == 201) {
+ printk(KERN_INFO "trident: Running on Alpha system "
+ "type Nautilus\n");
+ ac97_data = ali_ac97_get(card, 0, AC97_POWER_CONTROL);
+ ali_ac97_set(card, 0, AC97_POWER_CONTROL,
+ ac97_data | ALI_EAPD_POWER_DOWN);
+ }
+ }
+#endif /* CONFIG_ALPHA_NAUTILUS || CONFIG_ALPHA_GENERIC */
+ /* edited by HMSEO for GT sound */
+ }
+ rc = 0;
+ pci_set_drvdata(pci_dev, card);
+
+ /* Enable Address Engine Interrupts */
+ trident_enable_loop_interrupts(card);
+
+ /* Register gameport */
+ trident_register_gameport(card);
+
+out:
+ return rc;
+
+out_unregister_sound_dsp:
+ unregister_sound_dsp(card->dev_audio);
+out_free_irq:
+ free_irq(card->irq, card);
+out_proc_fs:
+ if (res) {
+ remove_proc_entry("ALi5451", NULL);
+ res = NULL;
+ }
+ kfree(card);
+ devs = NULL;
+out_release_region:
+ release_region(iobase, 256);
+ return rc;
+}
+
+static void __devexit
+trident_remove(struct pci_dev *pci_dev)
+{
+ int i;
+ struct trident_card *card = pci_get_drvdata(pci_dev);
+
+ /*
+ * Kill running timers before unload. We can't have them
+ * going off after rmmod!
+ */
+ if (card->hwvolctl)
+ del_timer_sync(&card->timer);
+
+ /* ALi S/PDIF and Power Management */
+ if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+ ali_setup_spdif_out(card, ALI_PCM_TO_SPDIF_OUT);
+ ali_disable_special_channel(card, ALI_SPDIF_OUT_CHANNEL);
+ ali_disable_spdif_in(card);
+ remove_proc_entry("ALi5451", NULL);
+ }
+
+ /* Unregister gameport */
+ if (card->gameport)
+ gameport_unregister_port(card->gameport);
+
+ /* Kill interrupts, and SP/DIF */
+ trident_disable_loop_interrupts(card);
+
+ /* free hardware resources */
+ free_irq(card->irq, card);
+ release_region(card->iobase, 256);
+
+ /* unregister audio devices */
+ for (i = 0; i < NR_AC97; i++)
+ if (card->ac97_codec[i] != NULL) {
+ unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
+ ac97_release_codec(card->ac97_codec[i]);
+ }
+ unregister_sound_dsp(card->dev_audio);
+
+ kfree(card);
+
+ pci_set_drvdata(pci_dev, NULL);
+}
+
+MODULE_AUTHOR("Alan Cox, Aaron Holtzman, Ollie Lho, Ching Ling Lee, Muli Ben-Yehuda");
+MODULE_DESCRIPTION("Trident 4DWave/SiS 7018/ALi 5451 and Tvia/IGST CyberPro5050 PCI "
+ "Audio Driver");
+MODULE_LICENSE("GPL");
+
+#define TRIDENT_MODULE_NAME "trident"
+
+static struct pci_driver trident_pci_driver = {
+ .name = TRIDENT_MODULE_NAME,
+ .id_table = trident_pci_tbl,
+ .probe = trident_probe,
+ .remove = __devexit_p(trident_remove),
+ .suspend = trident_suspend,
+ .resume = trident_resume
+};
+
+static int __init
+trident_init_module(void)
+{
+ printk(KERN_INFO "Trident 4DWave/SiS 7018/ALi 5451,Tvia CyberPro "
+ "5050 PCI Audio, version " DRIVER_VERSION ", " __TIME__ " "
+ __DATE__ "\n");
+
+ return pci_register_driver(&trident_pci_driver);
+}
+
+static void __exit
+trident_cleanup_module(void)
+{
+ pci_unregister_driver(&trident_pci_driver);
+}
+
+module_init(trident_init_module);
+module_exit(trident_cleanup_module);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-01 20:32:47 +0100