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kernel-ark/drivers/media/video/stradis.c
Jesper Juhl f9101210e7 [PATCH] vfree and kfree cleanup in drivers/ 
This patch does a full cleanup of 'NULL checks before vfree', and a partial
cleanup of calls to kfree for all of drivers/ - the kfree bit is partial in
that I only did the files that also had vfree calls in them.  The patch
also gets rid of some redundant (void *) casts of pointers being passed to
[vk]free, and a some tiny whitespace corrections also crept in.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-10 10:06:30 -07:00

2247 lines
65 KiB
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/*
* stradis.c - stradis 4:2:2 mpeg decoder driver
*
* Stradis 4:2:2 MPEG-2 Decoder Driver
* Copyright (C) 1999 Nathan Laredo <laredo@gnu.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.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/poll.h>
#include <linux/pci.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <linux/ioport.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/sched.h>
#include <asm/types.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <asm/uaccess.h>
#include <linux/vmalloc.h>
#include <linux/videodev.h>
#include "saa7146.h"
#include "saa7146reg.h"
#include "ibmmpeg2.h"
#include "saa7121.h"
#include "cs8420.h"
#define DEBUG(x) /* debug driver */
#undef IDEBUG /* debug irq handler */
#undef MDEBUG /* debug memory management */
#define SAA7146_MAX 6
static struct saa7146 saa7146s[SAA7146_MAX];
static int saa_num = 0; /* number of SAA7146s in use */
static int video_nr = -1;
module_param(video_nr, int, 0);
MODULE_LICENSE("GPL");
#define nDebNormal 0x00480000
#define nDebNoInc 0x00480000
#define nDebVideo 0xd0480000
#define nDebAudio 0xd0400000
#define nDebDMA 0x02c80000
#define oDebNormal 0x13c80000
#define oDebNoInc 0x13c80000
#define oDebVideo 0xd1080000
#define oDebAudio 0xd1080000
#define oDebDMA 0x03080000
#define NewCard (saa->boardcfg[3])
#define ChipControl (saa->boardcfg[1])
#define NTSCFirstActive (saa->boardcfg[4])
#define PALFirstActive (saa->boardcfg[5])
#define NTSCLastActive (saa->boardcfg[54])
#define PALLastActive (saa->boardcfg[55])
#define Have2MB (saa->boardcfg[18] & 0x40)
#define HaveCS8420 (saa->boardcfg[18] & 0x04)
#define IBMMPEGCD20 (saa->boardcfg[18] & 0x20)
#define HaveCS3310 (saa->boardcfg[18] & 0x01)
#define CS3310MaxLvl ((saa->boardcfg[30] << 8) | saa->boardcfg[31])
#define HaveCS4341 (saa->boardcfg[40] == 2)
#define SDIType (saa->boardcfg[27])
#define CurrentMode (saa->boardcfg[2])
#define debNormal (NewCard ? nDebNormal : oDebNormal)
#define debNoInc (NewCard ? nDebNoInc : oDebNoInc)
#define debVideo (NewCard ? nDebVideo : oDebVideo)
#define debAudio (NewCard ? nDebAudio : oDebAudio)
#define debDMA (NewCard ? nDebDMA : oDebDMA)
#ifdef USE_RESCUE_EEPROM_SDM275
static unsigned char rescue_eeprom[64] = {
0x00,0x01,0x04,0x13,0x26,0x0f,0x10,0x00,0x00,0x00,0x43,0x63,0x22,0x01,0x29,0x15,0x73,0x00,0x1f, 'd', 'e', 'c', 'x', 'l', 'd', 'v', 'a',0x02,0x00,0x01,0x00,0xcc,0xa4,0x63,0x09,0xe2,0x10,0x00,0x0a,0x00,0x02,0x02, 'd', 'e', 'c', 'x', 'l', 'a',0x00,0x00,0x42,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};
#endif
/* ----------------------------------------------------------------------- */
/* Hardware I2C functions */
static void I2CWipe(struct saa7146 *saa)
{
int i;
/* set i2c to ~=100kHz, abort transfer, clear busy */
saawrite(0x600 | SAA7146_I2C_ABORT, SAA7146_I2C_STATUS);
saawrite((SAA7146_MC2_UPLD_I2C << 16) |
SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
/* wait for i2c registers to be programmed */
for (i = 0; i < 1000 &&
!(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
schedule();
saawrite(0x600, SAA7146_I2C_STATUS);
saawrite((SAA7146_MC2_UPLD_I2C << 16) |
SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
/* wait for i2c registers to be programmed */
for (i = 0; i < 1000 &&
!(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
schedule();
saawrite(0x600, SAA7146_I2C_STATUS);
saawrite((SAA7146_MC2_UPLD_I2C << 16) |
SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
/* wait for i2c registers to be programmed */
for (i = 0; i < 1000 &&
!(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
schedule();
}
/* read I2C */
static int I2CRead(struct saa7146 *saa, unsigned char addr,
unsigned char subaddr, int dosub)
{
int i;
if (saaread(SAA7146_I2C_STATUS) & 0x3c)
I2CWipe(saa);
for (i = 0; i < 1000 &&
(saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_BUSY); i++)
schedule();
if (i == 1000)
I2CWipe(saa);
if (dosub)
saawrite(((addr & 0xfe) << 24) | (((addr | 1) & 0xff) << 8) |
((subaddr & 0xff) << 16) | 0xed, SAA7146_I2C_TRANSFER);
else
saawrite(((addr & 0xfe) << 24) | (((addr | 1) & 0xff) << 16) |
0xf1, SAA7146_I2C_TRANSFER);
saawrite((SAA7146_MC2_UPLD_I2C << 16) |
SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
/* wait for i2c registers to be programmed */
for (i = 0; i < 1000 &&
!(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
schedule();
/* wait for valid data */
for (i = 0; i < 1000 &&
(saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_BUSY); i++)
schedule();
if (saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_ERR)
return -1;
if (i == 1000)
printk("i2c setup read timeout\n");
saawrite(0x41, SAA7146_I2C_TRANSFER);
saawrite((SAA7146_MC2_UPLD_I2C << 16) |
SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
/* wait for i2c registers to be programmed */
for (i = 0; i < 1000 &&
!(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
schedule();
/* wait for valid data */
for (i = 0; i < 1000 &&
(saaread(SAA7146_I2C_TRANSFER) & SAA7146_I2C_BUSY); i++)
schedule();
if (saaread(SAA7146_I2C_TRANSFER) & SAA7146_I2C_ERR)
return -1;
if (i == 1000)
printk("i2c read timeout\n");
return ((saaread(SAA7146_I2C_TRANSFER) >> 24) & 0xff);
}
/* set both to write both bytes, reset it to write only b1 */
static int I2CWrite(struct saa7146 *saa, unsigned char addr, unsigned char b1,
unsigned char b2, int both)
{
int i;
u32 data;
if (saaread(SAA7146_I2C_STATUS) & 0x3c)
I2CWipe(saa);
for (i = 0; i < 1000 &&
(saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_BUSY); i++)
schedule();
if (i == 1000)
I2CWipe(saa);
data = ((addr & 0xfe) << 24) | ((b1 & 0xff) << 16);
if (both)
data |= ((b2 & 0xff) << 8) | 0xe5;
else
data |= 0xd1;
saawrite(data, SAA7146_I2C_TRANSFER);
saawrite((SAA7146_MC2_UPLD_I2C << 16) | SAA7146_MC2_UPLD_I2C,
SAA7146_MC2);
return 0;
}
static void attach_inform(struct saa7146 *saa, int id)
{
int i;
DEBUG(printk(KERN_DEBUG "stradis%d: i2c: device found=%02x\n", saa->nr, id));
if (id == 0xa0) { /* we have rev2 or later board, fill in info */
for (i = 0; i < 64; i++)
saa->boardcfg[i] = I2CRead(saa, 0xa0, i, 1);
#ifdef USE_RESCUE_EEPROM_SDM275
if (saa->boardcfg[0] != 0) {
printk("stradis%d: WARNING: EEPROM STORED VALUES HAVE BEEN IGNORED\n", saa->nr);
for (i = 0; i < 64; i++)
saa->boardcfg[i] = rescue_eeprom[i];
}
#endif
printk("stradis%d: config =", saa->nr);
for (i = 0; i < 51; i++) {
printk(" %02x",saa->boardcfg[i]);
}
printk("\n");
}
}
static void I2CBusScan(struct saa7146 *saa)
{
int i;
for (i = 0; i < 0xff; i += 2)
if ((I2CRead(saa, i, 0, 0)) >= 0)
attach_inform(saa, i);
}
static int debiwait_maxwait = 0;
static int wait_for_debi_done(struct saa7146 *saa)
{
int i;
/* wait for registers to be programmed */
for (i = 0; i < 100000 &&
!(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_DEBI); i++)
saaread(SAA7146_MC2);
/* wait for transfer to complete */
for (i = 0; i < 500000 &&
(saaread(SAA7146_PSR) & SAA7146_PSR_DEBI_S); i++)
saaread(SAA7146_MC2);
if (i > debiwait_maxwait)
printk("wait-for-debi-done maxwait: %d\n",
debiwait_maxwait = i);
if (i == 500000)
return -1;
return 0;
}
static int debiwrite(struct saa7146 *saa, u32 config, int addr,
u32 val, int count)
{
u32 cmd;
if (count <= 0 || count > 32764)
return -1;
if (wait_for_debi_done(saa) < 0)
return -1;
saawrite(config, SAA7146_DEBI_CONFIG);
if (count <= 4) /* immediate transfer */
saawrite(val, SAA7146_DEBI_AD);
else /* block transfer */
saawrite(virt_to_bus(saa->dmadebi), SAA7146_DEBI_AD);
saawrite((cmd = (count << 17) | (addr & 0xffff)), SAA7146_DEBI_COMMAND);
saawrite((SAA7146_MC2_UPLD_DEBI << 16) | SAA7146_MC2_UPLD_DEBI,
SAA7146_MC2);
return 0;
}
static u32 debiread(struct saa7146 *saa, u32 config, int addr, int count)
{
u32 result = 0;
if (count > 32764 || count <= 0)
return 0;
if (wait_for_debi_done(saa) < 0)
return 0;
saawrite(virt_to_bus(saa->dmadebi), SAA7146_DEBI_AD);
saawrite((count << 17) | 0x10000 | (addr & 0xffff),
SAA7146_DEBI_COMMAND);
saawrite(config, SAA7146_DEBI_CONFIG);
saawrite((SAA7146_MC2_UPLD_DEBI << 16) | SAA7146_MC2_UPLD_DEBI,
SAA7146_MC2);
if (count > 4) /* not an immediate transfer */
return count;
wait_for_debi_done(saa);
result = saaread(SAA7146_DEBI_AD);
if (count == 1)
result &= 0xff;
if (count == 2)
result &= 0xffff;
if (count == 3)
result &= 0xffffff;
return result;
}
#if 0 /* unused */
/* MUST be a multiple of 8 bytes and 8-byte aligned and < 32768 bytes */
/* data copied into saa->dmadebi buffer, caller must re-enable interrupts */
static void ibm_block_dram_read(struct saa7146 *saa, int address, int bytes)
{
int i, j;
u32 *buf;
buf = (u32 *) saa->dmadebi;
if (bytes > 0x7000)
bytes = 0x7000;
saawrite(0, SAA7146_IER); /* disable interrupts */
for (i=0; i < 10000 &&
(debiread(saa, debNormal, IBM_MP2_DRAM_CMD_STAT, 2)
& 0x8000); i++)
saaread(SAA7146_MC2);
if (i == 10000)
printk(KERN_ERR "stradis%d: dram_busy never cleared\n",
saa->nr);
debiwrite(saa, debNormal, IBM_MP2_SRC_ADDR, (address<<16) |
(address>>16), 4);
debiwrite(saa, debNormal, IBM_MP2_BLOCK_SIZE, bytes, 2);
debiwrite(saa, debNormal, IBM_MP2_CMD_STAT, 0x8a10, 2);
for (j = 0; j < bytes/4; j++) {
for (i = 0; i < 10000 &&
(!(debiread(saa, debNormal, IBM_MP2_DRAM_CMD_STAT, 2)
& 0x4000)); i++)
saaread(SAA7146_MC2);
if (i == 10000)
printk(KERN_ERR "stradis%d: dram_ready never set\n",
saa->nr);
buf[j] = debiread(saa, debNormal, IBM_MP2_DRAM_DATA, 4);
}
}
#endif /* unused */
static void do_irq_send_data(struct saa7146 *saa)
{
int split, audbytes, vidbytes;
saawrite(SAA7146_PSR_PIN1, SAA7146_IER);
/* if special feature mode in effect, disable audio sending */
if (saa->playmode != VID_PLAY_NORMAL)
saa->audtail = saa->audhead = 0;
if (saa->audhead <= saa->audtail)
audbytes = saa->audtail - saa->audhead;
else
audbytes = 65536 - (saa->audhead - saa->audtail);
if (saa->vidhead <= saa->vidtail)
vidbytes = saa->vidtail - saa->vidhead;
else
vidbytes = 524288 - (saa->vidhead - saa->vidtail);
if (audbytes == 0 && vidbytes == 0 && saa->osdtail == saa->osdhead) {
saawrite(0, SAA7146_IER);
return;
}
/* if at least 1 block audio waiting and audio fifo isn't full */
if (audbytes >= 2048 && (debiread(saa, debNormal,
IBM_MP2_AUD_FIFO, 2) & 0xff) < 60) {
if (saa->audhead > saa->audtail)
split = 65536 - saa->audhead;
else
split = 0;
audbytes = 2048;
if (split > 0 && split < 2048) {
memcpy(saa->dmadebi, saa->audbuf + saa->audhead,
split);
saa->audhead = 0;
audbytes -= split;
} else
split = 0;
memcpy(saa->dmadebi + split, saa->audbuf + saa->audhead,
audbytes);
saa->audhead += audbytes;
saa->audhead &= 0xffff;
debiwrite(saa, debAudio, (NewCard? IBM_MP2_AUD_FIFO :
IBM_MP2_AUD_FIFOW), 0, 2048);
wake_up_interruptible(&saa->audq);
/* if at least 1 block video waiting and video fifo isn't full */
} else if (vidbytes >= 30720 && (debiread(saa, debNormal,
IBM_MP2_FIFO, 2)) < 16384) {
if (saa->vidhead > saa->vidtail)
split = 524288 - saa->vidhead;
else
split = 0;
vidbytes = 30720;
if (split > 0 && split < 30720) {
memcpy(saa->dmadebi, saa->vidbuf + saa->vidhead,
split);
saa->vidhead = 0;
vidbytes -= split;
} else
split = 0;
memcpy(saa->dmadebi + split, saa->vidbuf + saa->vidhead,
vidbytes);
saa->vidhead += vidbytes;
saa->vidhead &= 0x7ffff;
debiwrite(saa, debVideo, (NewCard ? IBM_MP2_FIFO :
IBM_MP2_FIFOW), 0, 30720);
wake_up_interruptible(&saa->vidq);
}
saawrite(SAA7146_PSR_DEBI_S | SAA7146_PSR_PIN1, SAA7146_IER);
}
static void send_osd_data(struct saa7146 *saa)
{
int size = saa->osdtail - saa->osdhead;
if (size > 30720)
size = 30720;
/* ensure some multiple of 8 bytes is transferred */
size = 8 * ((size + 8)>>3);
if (size) {
debiwrite(saa, debNormal, IBM_MP2_OSD_ADDR,
(saa->osdhead>>3), 2);
memcpy(saa->dmadebi, &saa->osdbuf[saa->osdhead], size);
saa->osdhead += size;
/* block transfer of next 8 bytes to ~32k bytes */
debiwrite(saa, debNormal, IBM_MP2_OSD_DATA, 0, size);
}
if (saa->osdhead >= saa->osdtail) {
saa->osdhead = saa->osdtail = 0;
debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00c, 2);
}
}
static irqreturn_t saa7146_irq(int irq, void *dev_id, struct pt_regs *regs)
{
struct saa7146 *saa = (struct saa7146 *) dev_id;
u32 stat, astat;
int count;
int handled = 0;
count = 0;
while (1) {
/* get/clear interrupt status bits */
stat = saaread(SAA7146_ISR);
astat = stat & saaread(SAA7146_IER);
if (!astat)
break;
handled = 1;
saawrite(astat, SAA7146_ISR);
if (astat & SAA7146_PSR_DEBI_S) {
do_irq_send_data(saa);
}
if (astat & SAA7146_PSR_PIN1) {
int istat;
/* the following read will trigger DEBI_S */
istat = debiread(saa, debNormal, IBM_MP2_HOST_INT, 2);
if (istat & 1) {
saawrite(0, SAA7146_IER);
send_osd_data(saa);
saawrite(SAA7146_PSR_DEBI_S |
SAA7146_PSR_PIN1, SAA7146_IER);
}
if (istat & 0x20) { /* Video Start */
saa->vidinfo.frame_count++;
}
if (istat & 0x400) { /* Picture Start */
/* update temporal reference */
}
if (istat & 0x200) { /* Picture Resolution Change */
/* read new resolution */
}
if (istat & 0x100) { /* New User Data found */
/* read new user data */
}
if (istat & 0x1000) { /* new GOP/SMPTE */
/* read new SMPTE */
}
if (istat & 0x8000) { /* Sequence Start Code */
/* reset frame counter, load sizes */
saa->vidinfo.frame_count = 0;
saa->vidinfo.h_size = 704;
saa->vidinfo.v_size = 480;
#if 0
if (saa->endmarkhead != saa->endmarktail) {
saa->audhead =
saa->endmark[saa->endmarkhead];
saa->endmarkhead++;
if (saa->endmarkhead >= MAX_MARKS)
saa->endmarkhead = 0;
}
#endif
}
if (istat & 0x4000) { /* Sequence Error Code */
if (saa->endmarkhead != saa->endmarktail) {
saa->audhead =
saa->endmark[saa->endmarkhead];
saa->endmarkhead++;
if (saa->endmarkhead >= MAX_MARKS)
saa->endmarkhead = 0;
}
}
}
#ifdef IDEBUG
if (astat & SAA7146_PSR_PPEF) {
IDEBUG(printk("stradis%d irq: PPEF\n", saa->nr));
}
if (astat & SAA7146_PSR_PABO) {
IDEBUG(printk("stradis%d irq: PABO\n", saa->nr));
}
if (astat & SAA7146_PSR_PPED) {
IDEBUG(printk("stradis%d irq: PPED\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_I1) {
IDEBUG(printk("stradis%d irq: RPS_I1\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_I0) {
IDEBUG(printk("stradis%d irq: RPS_I0\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_LATE1) {
IDEBUG(printk("stradis%d irq: RPS_LATE1\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_LATE0) {
IDEBUG(printk("stradis%d irq: RPS_LATE0\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_E1) {
IDEBUG(printk("stradis%d irq: RPS_E1\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_E0) {
IDEBUG(printk("stradis%d irq: RPS_E0\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_TO1) {
IDEBUG(printk("stradis%d irq: RPS_TO1\n", saa->nr));
}
if (astat & SAA7146_PSR_RPS_TO0) {
IDEBUG(printk("stradis%d irq: RPS_TO0\n", saa->nr));
}
if (astat & SAA7146_PSR_UPLD) {
IDEBUG(printk("stradis%d irq: UPLD\n", saa->nr));
}
if (astat & SAA7146_PSR_DEBI_E) {
IDEBUG(printk("stradis%d irq: DEBI_E\n", saa->nr));
}
if (astat & SAA7146_PSR_I2C_S) {
IDEBUG(printk("stradis%d irq: I2C_S\n", saa->nr));
}
if (astat & SAA7146_PSR_I2C_E) {
IDEBUG(printk("stradis%d irq: I2C_E\n", saa->nr));
}
if (astat & SAA7146_PSR_A2_IN) {
IDEBUG(printk("stradis%d irq: A2_IN\n", saa->nr));
}
if (astat & SAA7146_PSR_A2_OUT) {
IDEBUG(printk("stradis%d irq: A2_OUT\n", saa->nr));
}
if (astat & SAA7146_PSR_A1_IN) {
IDEBUG(printk("stradis%d irq: A1_IN\n", saa->nr));
}
if (astat & SAA7146_PSR_A1_OUT) {
IDEBUG(printk("stradis%d irq: A1_OUT\n", saa->nr));
}
if (astat & SAA7146_PSR_AFOU) {
IDEBUG(printk("stradis%d irq: AFOU\n", saa->nr));
}
if (astat & SAA7146_PSR_V_PE) {
IDEBUG(printk("stradis%d irq: V_PE\n", saa->nr));
}
if (astat & SAA7146_PSR_VFOU) {
IDEBUG(printk("stradis%d irq: VFOU\n", saa->nr));
}
if (astat & SAA7146_PSR_FIDA) {
IDEBUG(printk("stradis%d irq: FIDA\n", saa->nr));
}
if (astat & SAA7146_PSR_FIDB) {
IDEBUG(printk("stradis%d irq: FIDB\n", saa->nr));
}
if (astat & SAA7146_PSR_PIN3) {
IDEBUG(printk("stradis%d irq: PIN3\n", saa->nr));
}
if (astat & SAA7146_PSR_PIN2) {
IDEBUG(printk("stradis%d irq: PIN2\n", saa->nr));
}
if (astat & SAA7146_PSR_PIN0) {
IDEBUG(printk("stradis%d irq: PIN0\n", saa->nr));
}
if (astat & SAA7146_PSR_ECS) {
IDEBUG(printk("stradis%d irq: ECS\n", saa->nr));
}
if (astat & SAA7146_PSR_EC3S) {
IDEBUG(printk("stradis%d irq: EC3S\n", saa->nr));
}
if (astat & SAA7146_PSR_EC0S) {
IDEBUG(printk("stradis%d irq: EC0S\n", saa->nr));
}
#endif
count++;
if (count > 15)
printk(KERN_WARNING "stradis%d: irq loop %d\n",
saa->nr, count);
if (count > 20) {
saawrite(0, SAA7146_IER);
printk(KERN_ERR
"stradis%d: IRQ loop cleared\n", saa->nr);
}
}
return IRQ_RETVAL(handled);
}
static int ibm_send_command(struct saa7146 *saa,
int command, int data, int chain)
{
int i;
if (chain)
debiwrite(saa, debNormal, IBM_MP2_COMMAND, (command << 1) | 1, 2);
else
debiwrite(saa, debNormal, IBM_MP2_COMMAND, command << 1, 2);
debiwrite(saa, debNormal, IBM_MP2_CMD_DATA, data, 2);
debiwrite(saa, debNormal, IBM_MP2_CMD_STAT, 1, 2);
for (i = 0; i < 100 &&
(debiread(saa, debNormal, IBM_MP2_CMD_STAT, 2) & 1); i++)
schedule();
if (i == 100)
return -1;
return 0;
}
static void cs4341_setlevel(struct saa7146 *saa, int left, int right)
{
I2CWrite(saa, 0x22, 0x03, left > 94 ? 94 : left, 2);
I2CWrite(saa, 0x22, 0x04, right > 94 ? 94 : right, 2);
}
static void initialize_cs4341(struct saa7146 *saa)
{
int i;
for (i = 0; i < 200; i++) {
/* auto mute off, power on, no de-emphasis */
/* I2S data up to 24-bit 64xFs internal SCLK */
I2CWrite(saa, 0x22, 0x01, 0x11, 2);
/* ATAPI mixer settings */
I2CWrite(saa, 0x22, 0x02, 0x49, 2);
/* attenuation left 3db */
I2CWrite(saa, 0x22, 0x03, 0x00, 2);
/* attenuation right 3db */
I2CWrite(saa, 0x22, 0x04, 0x00, 2);
I2CWrite(saa, 0x22, 0x01, 0x10, 2);
if (I2CRead(saa, 0x22, 0x02, 1) == 0x49)
break;
schedule();
}
printk("stradis%d: CS4341 initialized (%d)\n", saa->nr, i);
return;
}
static void initialize_cs8420(struct saa7146 *saa, int pro)
{
int i;
u8 *sequence;
if (pro)
sequence = mode8420pro;
else
sequence = mode8420con;
for (i = 0; i < INIT8420LEN; i++)
I2CWrite(saa, 0x20, init8420[i * 2],
init8420[i * 2 + 1], 2);
for (i = 0; i < MODE8420LEN; i++)
I2CWrite(saa, 0x20, sequence[i * 2],
sequence[i * 2 + 1], 2);
printk("stradis%d: CS8420 initialized\n", saa->nr);
}
static void initialize_saa7121(struct saa7146 *saa, int dopal)
{
int i, mod;
u8 *sequence;
if (dopal)
sequence = init7121pal;
else
sequence = init7121ntsc;
mod = saaread(SAA7146_PSR) & 0x08;
/* initialize PAL/NTSC video encoder */
for (i = 0; i < INIT7121LEN; i++) {
if (NewCard) { /* handle new card encoder differences */
if (sequence[i*2] == 0x3a)
I2CWrite(saa, 0x88, 0x3a, 0x13, 2);
else if (sequence[i*2] == 0x6b)
I2CWrite(saa, 0x88, 0x6b, 0x20, 2);
else if (sequence[i*2] == 0x6c)
I2CWrite(saa, 0x88, 0x6c,
dopal ? 0x09 : 0xf5, 2);
else if (sequence[i*2] == 0x6d)
I2CWrite(saa, 0x88, 0x6d,
dopal ? 0x20 : 0x00, 2);
else if (sequence[i*2] == 0x7a)
I2CWrite(saa, 0x88, 0x7a,
dopal ? (PALFirstActive - 1) :
(NTSCFirstActive - 4), 2);
else if (sequence[i*2] == 0x7b)
I2CWrite(saa, 0x88, 0x7b,
dopal ? PALLastActive :
NTSCLastActive, 2);
else I2CWrite(saa, 0x88, sequence[i * 2],
sequence[i * 2 + 1], 2);
} else {
if (sequence[i*2] == 0x6b && mod)
I2CWrite(saa, 0x88, 0x6b,
(sequence[i * 2 + 1] ^ 0x09), 2);
else if (sequence[i*2] == 0x7a)
I2CWrite(saa, 0x88, 0x7a,
dopal ? (PALFirstActive - 1) :
(NTSCFirstActive - 4), 2);
else if (sequence[i*2] == 0x7b)
I2CWrite(saa, 0x88, 0x7b,
dopal ? PALLastActive :
NTSCLastActive, 2);
else
I2CWrite(saa, 0x88, sequence[i * 2],
sequence[i * 2 + 1], 2);
}
}
}
static void set_genlock_offset(struct saa7146 *saa, int noffset)
{
int nCode;
int PixelsPerLine = 858;
if (CurrentMode == VIDEO_MODE_PAL)
PixelsPerLine = 864;
if (noffset > 500)
noffset = 500;
else if (noffset < -500)
noffset = -500;
nCode = noffset + 0x100;
if (nCode == 1)
nCode = 0x401;
else if (nCode < 1) nCode = 0x400 + PixelsPerLine + nCode;
debiwrite(saa, debNormal, XILINX_GLDELAY, nCode, 2);
}
static void set_out_format(struct saa7146 *saa, int mode)
{
initialize_saa7121(saa, (mode == VIDEO_MODE_NTSC ? 0 : 1));
saa->boardcfg[2] = mode;
/* do not adjust analog video parameters here, use saa7121 init */
/* you will affect the SDI output on the new card */
if (mode == VIDEO_MODE_PAL) { /* PAL */
debiwrite(saa, debNormal, XILINX_CTL0, 0x0808, 2);
mdelay(50);
saawrite(0x012002c0, SAA7146_NUM_LINE_BYTE1);
if (NewCard) {
debiwrite(saa, debNormal, IBM_MP2_DISP_MODE,
0xe100, 2);
mdelay(50);
}
debiwrite(saa, debNormal, IBM_MP2_DISP_MODE,
NewCard ? 0xe500: 0x6500, 2);
debiwrite(saa, debNormal, IBM_MP2_DISP_DLY,
(1 << 8) |
(NewCard ? PALFirstActive : PALFirstActive-6), 2);
} else { /* NTSC */
debiwrite(saa, debNormal, XILINX_CTL0, 0x0800, 2);
mdelay(50);
saawrite(0x00f002c0, SAA7146_NUM_LINE_BYTE1);
debiwrite(saa, debNormal, IBM_MP2_DISP_MODE,
NewCard ? 0xe100: 0x6100, 2);
debiwrite(saa, debNormal, IBM_MP2_DISP_DLY,
(1 << 8) |
(NewCard ? NTSCFirstActive : NTSCFirstActive-6), 2);
}
}
/* Intialize bitmangler to map from a byte value to the mangled word that
* must be output to program the Xilinx part through the DEBI port.
* Xilinx Data Bit->DEBI Bit: 0->15 1->7 2->6 3->12 4->11 5->2 6->1 7->0
* transfer FPGA code, init IBM chip, transfer IBM microcode
* rev2 card mangles: 0->7 1->6 2->5 3->4 4->3 5->2 6->1 7->0
*/
static u16 bitmangler[256];
static int initialize_fpga(struct video_code *bitdata)
{
int i, num, startindex, failure = 0, loadtwo, loadfile = 0;
u16 *dmabuf;
u8 *newdma;
struct saa7146 *saa;
/* verify fpga code */
for (startindex = 0; startindex < bitdata->datasize; startindex++)
if (bitdata->data[startindex] == 255)
break;
if (startindex == bitdata->datasize) {
printk(KERN_INFO "stradis: bad fpga code\n");
return -1;
}
/* initialize all detected cards */
for (num = 0; num < saa_num; num++) {
saa = &saa7146s[num];
if (saa->boardcfg[0] > 20)
continue; /* card was programmed */
loadtwo = (saa->boardcfg[18] & 0x10);
if (!NewCard) /* we have an old board */
for (i = 0; i < 256; i++)
bitmangler[i] = ((i & 0x01) << 15) |
((i & 0x02) << 6) | ((i & 0x04) << 4) |
((i & 0x08) << 9) | ((i & 0x10) << 7) |
((i & 0x20) >> 3) | ((i & 0x40) >> 5) |
((i & 0x80) >> 7);
else /* else we have a new board */
for (i = 0; i < 256; i++)
bitmangler[i] = ((i & 0x01) << 7) |
((i & 0x02) << 5) | ((i & 0x04) << 3) |
((i & 0x08) << 1) | ((i & 0x10) >> 1) |
((i & 0x20) >> 3) | ((i & 0x40) >> 5) |
((i & 0x80) >> 7);
dmabuf = (u16 *) saa->dmadebi;
newdma = (u8 *) saa->dmadebi;
if (NewCard) { /* SDM2xxx */
if (!strncmp(bitdata->loadwhat, "decoder2", 8))
continue; /* fpga not for this card */
if (!strncmp(&saa->boardcfg[42],
bitdata->loadwhat, 8)) {
loadfile = 1;
} else if (loadtwo && !strncmp(&saa->boardcfg[19],
bitdata->loadwhat, 8)) {
loadfile = 2;
} else if (!saa->boardcfg[42] && /* special */
!strncmp("decxl", bitdata->loadwhat, 8)) {
loadfile = 1;
} else
continue; /* fpga not for this card */
if (loadfile != 1 && loadfile != 2) {
continue; /* skip to next card */
}
if (saa->boardcfg[0] && loadfile == 1 )
continue; /* skip to next card */
if (saa->boardcfg[0] != 1 && loadfile == 2)
continue; /* skip to next card */
saa->boardcfg[0]++; /* mark fpga handled */
printk("stradis%d: loading %s\n", saa->nr,
bitdata->loadwhat);
if (loadtwo && loadfile == 2)
goto send_fpga_stuff;
/* turn on the Audio interface to set PROG low */
saawrite(0x00400040, SAA7146_GPIO_CTRL);
saaread(SAA7146_PSR); /* ensure posted write */
/* wait for everyone to reset */
mdelay(10);
saawrite(0x00400000, SAA7146_GPIO_CTRL);
} else { /* original card */
if (strncmp(bitdata->loadwhat, "decoder2", 8))
continue; /* fpga not for this card */
/* Pull the Xilinx PROG signal WS3 low */
saawrite(0x02000200, SAA7146_MC1);
/* Turn on the Audio interface so can set PROG low */
saawrite(0x000000c0, SAA7146_ACON1);
/* Pull the Xilinx INIT signal (GPIO2) low */
saawrite(0x00400000, SAA7146_GPIO_CTRL);
/* Make sure everybody resets */
saaread(SAA7146_PSR); /* ensure posted write */
mdelay(10);
/* Release the Xilinx PROG signal */
saawrite(0x00000000, SAA7146_ACON1);
/* Turn off the Audio interface */
saawrite(0x02000000, SAA7146_MC1);
}
/* Release Xilinx INIT signal (WS2) */
saawrite(0x00000000, SAA7146_GPIO_CTRL);
/* Wait for the INIT to go High */
for (i = 0; i < 10000 &&
!(saaread(SAA7146_PSR) & SAA7146_PSR_PIN2); i++)
schedule();
if (i == 1000) {
printk(KERN_INFO "stradis%d: no fpga INIT\n", saa->nr);
return -1;
}
send_fpga_stuff:
if (NewCard) {
for (i = startindex; i < bitdata->datasize; i++)
newdma[i - startindex] =
bitmangler[bitdata->data[i]];
debiwrite(saa, 0x01420000, 0, 0,
((bitdata->datasize - startindex) + 5));
if (loadtwo) {
if (loadfile == 1) {
printk("stradis%d: "
"awaiting 2nd FPGA bitfile\n",
saa->nr);
continue; /* skip to next card */
}
}
} else {
for (i = startindex; i < bitdata->datasize; i++)
dmabuf[i - startindex] =
bitmangler[bitdata->data[i]];
debiwrite(saa, 0x014a0000, 0, 0,
((bitdata->datasize - startindex) + 5) * 2);
}
for (i = 0; i < 1000 &&
!(saaread(SAA7146_PSR) & SAA7146_PSR_PIN2); i++)
schedule();
if (i == 1000) {
printk(KERN_INFO "stradis%d: FPGA load failed\n",
saa->nr);
failure++;
continue;
}
if (!NewCard) {
/* Pull the Xilinx INIT signal (GPIO2) low */
saawrite(0x00400000, SAA7146_GPIO_CTRL);
saaread(SAA7146_PSR); /* ensure posted write */
mdelay(2);
saawrite(0x00000000, SAA7146_GPIO_CTRL);
mdelay(2);
}
printk(KERN_INFO "stradis%d: FPGA Loaded\n", saa->nr);
saa->boardcfg[0] = 26; /* mark fpga programmed */
/* set VXCO to its lowest frequency */
debiwrite(saa, debNormal, XILINX_PWM, 0, 2);
if (NewCard) {
/* mute CS3310 */
if (HaveCS3310)
debiwrite(saa, debNormal, XILINX_CS3310_CMPLT,
0, 2);
/* set VXCO to PWM mode, release reset, blank on */
debiwrite(saa, debNormal, XILINX_CTL0, 0xffc4, 2);
mdelay(10);
/* unmute CS3310 */
if (HaveCS3310)
debiwrite(saa, debNormal, XILINX_CTL0,
0x2020, 2);
}
/* set source Black */
debiwrite(saa, debNormal, XILINX_CTL0, 0x1707, 2);
saa->boardcfg[4] = 22; /* set NTSC First Active Line */
saa->boardcfg[5] = 23; /* set PAL First Active Line */
saa->boardcfg[54] = 2; /* set NTSC Last Active Line - 256 */
saa->boardcfg[55] = 54; /* set PAL Last Active Line - 256 */
set_out_format(saa, VIDEO_MODE_NTSC);
mdelay(50);
/* begin IBM chip init */
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 4, 2);
saaread(SAA7146_PSR); /* wait for reset */
mdelay(5);
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 0, 2);
debiread(saa, debNormal, IBM_MP2_CHIP_CONTROL, 2);
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 0x10, 2);
debiwrite(saa, debNormal, IBM_MP2_CMD_ADDR, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_CHIP_MODE, 0x2e, 2);
if (NewCard) {
mdelay(5);
/* set i2s rate converter to 48KHz */
debiwrite(saa, debNormal, 0x80c0, 6, 2);
/* we must init CS8420 first since rev b pulls i2s */
/* master clock low and CS4341 needs i2s master to */
/* run the i2c port. */
if (HaveCS8420) {
/* 0=consumer, 1=pro */
initialize_cs8420(saa, 0);
}
mdelay(5);
if (HaveCS4341)
initialize_cs4341(saa);
}
debiwrite(saa, debNormal, IBM_MP2_INFC_CTL, 0x48, 2);
debiwrite(saa, debNormal, IBM_MP2_BEEP_CTL, 0xa000, 2);
debiwrite(saa, debNormal, IBM_MP2_DISP_LBOR, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_DISP_TBOR, 0, 2);
if (NewCard)
set_genlock_offset(saa, 0);
debiwrite(saa, debNormal, IBM_MP2_FRNT_ATTEN, 0, 2);
#if 0
/* enable genlock */
debiwrite(saa, debNormal, XILINX_CTL0, 0x8000, 2);
#else
/* disable genlock */
debiwrite(saa, debNormal, XILINX_CTL0, 0x8080, 2);
#endif
}
return failure;
}
static int do_ibm_reset(struct saa7146 *saa)
{
/* failure if decoder not previously programmed */
if (saa->boardcfg[0] < 37)
return -EIO;
/* mute CS3310 */
if (HaveCS3310)
debiwrite(saa, debNormal, XILINX_CS3310_CMPLT, 0, 2);
/* disable interrupts */
saawrite(0, SAA7146_IER);
saa->audhead = saa->audtail = 0;
saa->vidhead = saa->vidtail = 0;
/* tristate debi bus, disable debi transfers */
saawrite(0x00880000, SAA7146_MC1);
/* ensure posted write */
saaread(SAA7146_MC1);
mdelay(50);
/* re-enable debi transfers */
saawrite(0x00880088, SAA7146_MC1);
/* set source Black */
debiwrite(saa, debNormal, XILINX_CTL0, 0x1707, 2);
/* begin IBM chip init */
set_out_format(saa, CurrentMode);
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 4, 2);
saaread(SAA7146_PSR); /* wait for reset */
mdelay(5);
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 0, 2);
debiread(saa, debNormal, IBM_MP2_CHIP_CONTROL, 2);
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, ChipControl, 2);
debiwrite(saa, debNormal, IBM_MP2_CHIP_MODE, 0x2e, 2);
if (NewCard) {
mdelay(5);
/* set i2s rate converter to 48KHz */
debiwrite(saa, debNormal, 0x80c0, 6, 2);
/* we must init CS8420 first since rev b pulls i2s */
/* master clock low and CS4341 needs i2s master to */
/* run the i2c port. */
if (HaveCS8420) {
/* 0=consumer, 1=pro */
initialize_cs8420(saa, 1);
}
mdelay(5);
if (HaveCS4341)
initialize_cs4341(saa);
}
debiwrite(saa, debNormal, IBM_MP2_INFC_CTL, 0x48, 2);
debiwrite(saa, debNormal, IBM_MP2_BEEP_CTL, 0xa000, 2);
debiwrite(saa, debNormal, IBM_MP2_DISP_LBOR, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_DISP_TBOR, 0, 2);
if (NewCard)
set_genlock_offset(saa, 0);
debiwrite(saa, debNormal, IBM_MP2_FRNT_ATTEN, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_OSD_SIZE, 0x2000, 2);
debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4552, 2);
if (ibm_send_command(saa, IBM_MP2_CONFIG_DECODER,
(ChipControl == 0x43 ? 0xe800 : 0xe000), 1)) {
printk(KERN_ERR "stradis%d: IBM config failed\n", saa->nr);
}
if (HaveCS3310) {
int i = CS3310MaxLvl;
debiwrite(saa, debNormal, XILINX_CS3310_CMPLT, ((i<<8)|i), 2);
}
/* start video decoder */
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, ChipControl, 2);
/* 256k vid, 3520 bytes aud */
debiwrite(saa, debNormal, IBM_MP2_RB_THRESHOLD, 0x4037, 2);
debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4573, 2);
ibm_send_command(saa, IBM_MP2_PLAY, 0, 0);
/* enable buffer threshold irq */
debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00c, 2);
/* clear pending interrupts */
debiread(saa, debNormal, IBM_MP2_HOST_INT, 2);
debiwrite(saa, debNormal, XILINX_CTL0, 0x1711, 2);
return 0;
}
/* load the decoder microcode */
static int initialize_ibmmpeg2(struct video_code *microcode)
{
int i, num;
struct saa7146 *saa;
for (num = 0; num < saa_num; num++) {
saa = &saa7146s[num];
/* check that FPGA is loaded */
debiwrite(saa, debNormal, IBM_MP2_OSD_SIZE, 0xa55a, 2);
if ((i = debiread(saa, debNormal, IBM_MP2_OSD_SIZE, 2)) !=
0xa55a) {
printk(KERN_INFO "stradis%d: %04x != 0xa55a\n",
saa->nr, i);
#if 0
return -1;
#endif
}
if (!strncmp(microcode->loadwhat, "decoder.vid", 11)) {
if (saa->boardcfg[0] > 27)
continue; /* skip to next card */
/* load video control store */
saa->boardcfg[1] = 0x13; /* no-sync default */
debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 1, 2);
debiwrite(saa, debNormal, IBM_MP2_PROC_IADDR, 0, 2);
for (i = 0; i < microcode->datasize / 2; i++)
debiwrite(saa, debNormal, IBM_MP2_PROC_IDATA,
(microcode->data[i * 2] << 8) |
microcode->data[i * 2 + 1], 2);
debiwrite(saa, debNormal, IBM_MP2_PROC_IADDR, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL,
ChipControl, 2);
saa->boardcfg[0] = 28;
}
if (!strncmp(microcode->loadwhat, "decoder.aud", 11)) {
if (saa->boardcfg[0] > 35)
continue; /* skip to next card */
/* load audio control store */
debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 1, 2);
debiwrite(saa, debNormal, IBM_MP2_AUD_IADDR, 0, 2);
for (i = 0; i < microcode->datasize; i++)
debiwrite(saa, debNormal, IBM_MP2_AUD_IDATA,
microcode->data[i], 1);
debiwrite(saa, debNormal, IBM_MP2_AUD_IADDR, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_OSD_SIZE, 0x2000, 2);
debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4552, 2);
if (ibm_send_command(saa, IBM_MP2_CONFIG_DECODER,
0xe000, 1)) {
printk(KERN_ERR
"stradis%d: IBM config failed\n",
saa->nr);
return -1;
}
/* set PWM to center value */
if (NewCard) {
debiwrite(saa, debNormal, XILINX_PWM,
saa->boardcfg[14] +
(saa->boardcfg[13]<<8), 2);
} else
debiwrite(saa, debNormal, XILINX_PWM,
0x46, 2);
if (HaveCS3310) {
i = CS3310MaxLvl;
debiwrite(saa, debNormal,
XILINX_CS3310_CMPLT, ((i<<8)|i), 2);
}
printk(KERN_INFO
"stradis%d: IBM MPEGCD%d Initialized\n",
saa->nr, 18 + (debiread(saa, debNormal,
IBM_MP2_CHIP_CONTROL, 2) >> 12));
/* start video decoder */
debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL,
ChipControl, 2);
debiwrite(saa, debNormal, IBM_MP2_RB_THRESHOLD,
0x4037, 2); /* 256k vid, 3520 bytes aud */
debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4573, 2);
ibm_send_command(saa, IBM_MP2_PLAY, 0, 0);
/* enable buffer threshold irq */
debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00c, 2);
debiread(saa, debNormal, IBM_MP2_HOST_INT, 2);
/* enable gpio irq */
saawrite(0x00002000, SAA7146_GPIO_CTRL);
/* enable decoder output to HPS */
debiwrite(saa, debNormal, XILINX_CTL0, 0x1711, 2);
saa->boardcfg[0] = 37;
}
}
return 0;
}
static u32 palette2fmt[] =
{ /* some of these YUV translations are wrong */
0xffffffff, 0x86000000, 0x87000000, 0x80000000, 0x8100000, 0x82000000,
0x83000000, 0x00000000, 0x03000000, 0x03000000, 0x0a00000, 0x03000000,
0x06000000, 0x00000000, 0x03000000, 0x0a000000, 0x0300000
};
static int bpp2fmt[4] =
{
VIDEO_PALETTE_HI240, VIDEO_PALETTE_RGB565, VIDEO_PALETTE_RGB24,
VIDEO_PALETTE_RGB32
};
/* I wish I could find a formula to calculate these... */
static u32 h_prescale[64] =
{
0x10000000, 0x18040202, 0x18080000, 0x380c0606, 0x38100204, 0x38140808,
0x38180000, 0x381c0000, 0x3820161c, 0x38242a3b, 0x38281230, 0x382c4460,
0x38301040, 0x38340080, 0x38380000, 0x383c0000, 0x3840fefe, 0x3844ee9f,
0x3848ee9f, 0x384cee9f, 0x3850ee9f, 0x38542a3b, 0x38581230, 0x385c0000,
0x38600000, 0x38640000, 0x38680000, 0x386c0000, 0x38700000, 0x38740000,
0x38780000, 0x387c0000, 0x30800000, 0x38840000, 0x38880000, 0x388c0000,
0x38900000, 0x38940000, 0x38980000, 0x389c0000, 0x38a00000, 0x38a40000,
0x38a80000, 0x38ac0000, 0x38b00000, 0x38b40000, 0x38b80000, 0x38bc0000,
0x38c00000, 0x38c40000, 0x38c80000, 0x38cc0000, 0x38d00000, 0x38d40000,
0x38d80000, 0x38dc0000, 0x38e00000, 0x38e40000, 0x38e80000, 0x38ec0000,
0x38f00000, 0x38f40000, 0x38f80000, 0x38fc0000,
};
static u32 v_gain[64] =
{
0x016000ff, 0x016100ff, 0x016100ff, 0x016200ff, 0x016200ff, 0x016200ff,
0x016200ff, 0x016300ff, 0x016300ff, 0x016300ff, 0x016300ff, 0x016300ff,
0x016300ff, 0x016300ff, 0x016300ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
};
static void saa7146_set_winsize(struct saa7146 *saa)
{
u32 format;
int offset, yacl, ysci;
saa->win.color_fmt = format =
(saa->win.depth == 15) ? palette2fmt[VIDEO_PALETTE_RGB555] :
palette2fmt[bpp2fmt[(saa->win.bpp - 1) & 3]];
offset = saa->win.x * saa->win.bpp + saa->win.y * saa->win.bpl;
saawrite(saa->win.vidadr + offset, SAA7146_BASE_EVEN1);
saawrite(saa->win.vidadr + offset + saa->win.bpl, SAA7146_BASE_ODD1);
saawrite(saa->win.bpl * 2, SAA7146_PITCH1);
saawrite(saa->win.vidadr + saa->win.bpl * saa->win.sheight,
SAA7146_PROT_ADDR1);
saawrite(0, SAA7146_PAGE1);
saawrite(format|0x60, SAA7146_CLIP_FORMAT_CTRL);
offset = (704 / (saa->win.width - 1)) & 0x3f;
saawrite(h_prescale[offset], SAA7146_HPS_H_PRESCALE);
offset = (720896 / saa->win.width) / (offset + 1);
saawrite((offset<<12)|0x0c, SAA7146_HPS_H_SCALE);
if (CurrentMode == VIDEO_MODE_NTSC) {
yacl = /*(480 / saa->win.height - 1) & 0x3f*/ 0;
ysci = 1024 - (saa->win.height * 1024 / 480);
} else {
yacl = /*(576 / saa->win.height - 1) & 0x3f*/ 0;
ysci = 1024 - (saa->win.height * 1024 / 576);
}
saawrite((1<<31)|(ysci<<21)|(yacl<<15), SAA7146_HPS_V_SCALE);
saawrite(v_gain[yacl], SAA7146_HPS_V_GAIN);
saawrite(((SAA7146_MC2_UPLD_DMA1 | SAA7146_MC2_UPLD_HPS_V |
SAA7146_MC2_UPLD_HPS_H) << 16) | (SAA7146_MC2_UPLD_DMA1 |
SAA7146_MC2_UPLD_HPS_V | SAA7146_MC2_UPLD_HPS_H),
SAA7146_MC2);
}
/* clip_draw_rectangle(cm,x,y,w,h) -- handle clipping an area
* bitmap is fixed width, 128 bytes (1024 pixels represented)
* arranged most-sigificant-bit-left in 32-bit words
* based on saa7146 clipping hardware, it swaps bytes if LE
* much of this makes up for egcs brain damage -- so if you
* are wondering "why did he do this?" it is because the C
* was adjusted to generate the optimal asm output without
* writing non-portable __asm__ directives.
*/
static void clip_draw_rectangle(u32 *clipmap, int x, int y, int w, int h)
{
register int startword, endword;
register u32 bitsleft, bitsright;
u32 *temp;
if (x < 0) {
w += x;
x = 0;
}
if (y < 0) {
h += y;
y = 0;
}
if (w <= 0 || h <= 0 || x > 1023 || y > 639)
return; /* throw away bad clips */
if (x + w > 1024)
w = 1024 - x;
if (y + h > 640)
h = 640 - y;
startword = (x >> 5);
endword = ((x + w) >> 5);
bitsleft = (0xffffffff >> (x & 31));
bitsright = (0xffffffff << (~((x + w) - (endword<<5))));
temp = &clipmap[(y<<5) + startword];
w = endword - startword;
if (!w) {
bitsleft |= bitsright;
for (y = 0; y < h; y++) {
*temp |= bitsleft;
temp += 32;
}
} else {
for (y = 0; y < h; y++) {
*temp++ |= bitsleft;
for (x = 1; x < w; x++)
*temp++ = 0xffffffff;
*temp |= bitsright;
temp += (32 - w);
}
}
}
static void make_clip_tab(struct saa7146 *saa, struct video_clip *cr, int ncr)
{
int i, width, height;
u32 *clipmap;
clipmap = saa->dmavid2;
if((width=saa->win.width)>1023)
width = 1023; /* sanity check */
if((height=saa->win.height)>640)
height = 639; /* sanity check */
if (ncr > 0) { /* rectangles pased */
/* convert rectangular clips to a bitmap */
memset(clipmap, 0, VIDEO_CLIPMAP_SIZE); /* clear map */
for (i = 0; i < ncr; i++)
clip_draw_rectangle(clipmap, cr[i].x, cr[i].y,
cr[i].width, cr[i].height);
}
/* clip against viewing window AND screen
so we do not have to rely on the user program
*/
clip_draw_rectangle(clipmap,(saa->win.x+width>saa->win.swidth) ?
(saa->win.swidth-saa->win.x) : width, 0, 1024, 768);
clip_draw_rectangle(clipmap,0,(saa->win.y+height>saa->win.sheight) ?
(saa->win.sheight-saa->win.y) : height,1024,768);
if (saa->win.x<0)
clip_draw_rectangle(clipmap, 0, 0, -(saa->win.x), 768);
if (saa->win.y<0)
clip_draw_rectangle(clipmap, 0, 0, 1024, -(saa->win.y));
}
static int saa_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long argl)
{
struct saa7146 *saa = file->private_data;
void __user *arg = (void __user *)argl;
switch (cmd) {
case VIDIOCGCAP:
{
struct video_capability b;
strcpy(b.name, saa->video_dev.name);
b.type = VID_TYPE_CAPTURE |
VID_TYPE_OVERLAY |
VID_TYPE_CLIPPING |
VID_TYPE_FRAMERAM |
VID_TYPE_SCALES;
b.channels = 1;
b.audios = 1;
b.maxwidth = 768;
b.maxheight = 576;
b.minwidth = 32;
b.minheight = 32;
if (copy_to_user(arg, &b, sizeof(b)))
return -EFAULT;
return 0;
}
case VIDIOCGPICT:
{
struct video_picture p = saa->picture;
if (saa->win.depth == 8)
p.palette = VIDEO_PALETTE_HI240;
if (saa->win.depth == 15)
p.palette = VIDEO_PALETTE_RGB555;
if (saa->win.depth == 16)
p.palette = VIDEO_PALETTE_RGB565;
if (saa->win.depth == 24)
p.palette = VIDEO_PALETTE_RGB24;
if (saa->win.depth == 32)
p.palette = VIDEO_PALETTE_RGB32;
if (copy_to_user(arg, &p, sizeof(p)))
return -EFAULT;
return 0;
}
case VIDIOCSPICT:
{
struct video_picture p;
u32 format;
if (copy_from_user(&p, arg, sizeof(p)))
return -EFAULT;
if (p.palette < sizeof(palette2fmt) / sizeof(u32)) {
format = palette2fmt[p.palette];
saa->win.color_fmt = format;
saawrite(format|0x60, SAA7146_CLIP_FORMAT_CTRL);
}
saawrite(((p.brightness & 0xff00) << 16) |
((p.contrast & 0xfe00) << 7) |
((p.colour & 0xfe00) >> 9), SAA7146_BCS_CTRL);
saa->picture = p;
/* upload changed registers */
saawrite(((SAA7146_MC2_UPLD_HPS_H |
SAA7146_MC2_UPLD_HPS_V) << 16) |
SAA7146_MC2_UPLD_HPS_H | SAA7146_MC2_UPLD_HPS_V,
SAA7146_MC2);
return 0;
}
case VIDIOCSWIN:
{
struct video_window vw;
struct video_clip *vcp = NULL;
if (copy_from_user(&vw, arg, sizeof(vw)))
return -EFAULT;
if (vw.flags || vw.width < 16 || vw.height < 16) { /* stop capture */
saawrite((SAA7146_MC1_TR_E_1 << 16), SAA7146_MC1);
return -EINVAL;
}
if (saa->win.bpp < 4) { /* 32-bit align start and adjust width */
int i = vw.x;
vw.x = (vw.x + 3) & ~3;
i = vw.x - i;
vw.width -= i;
}
saa->win.x = vw.x;
saa->win.y = vw.y;
saa->win.width = vw.width;
if (saa->win.width > 768)
saa->win.width = 768;
saa->win.height = vw.height;
if (CurrentMode == VIDEO_MODE_NTSC) {
if (saa->win.height > 480)
saa->win.height = 480;
} else {
if (saa->win.height > 576)
saa->win.height = 576;
}
/* stop capture */
saawrite((SAA7146_MC1_TR_E_1 << 16), SAA7146_MC1);
saa7146_set_winsize(saa);
/*
* Do any clips.
*/
if (vw.clipcount < 0) {
if (copy_from_user(saa->dmavid2, vw.clips,
VIDEO_CLIPMAP_SIZE))
return -EFAULT;
}
else if (vw.clipcount > 16384) {
return -EINVAL;
} else if (vw.clipcount > 0) {
if ((vcp = vmalloc(sizeof(struct video_clip) *
(vw.clipcount))) == NULL)
return -ENOMEM;
if (copy_from_user(vcp, vw.clips,
sizeof(struct video_clip) *
vw.clipcount)) {
vfree(vcp);
return -EFAULT;
}
} else /* nothing clipped */
memset(saa->dmavid2, 0, VIDEO_CLIPMAP_SIZE);
make_clip_tab(saa, vcp, vw.clipcount);
if (vw.clipcount > 0)
vfree(vcp);
/* start capture & clip dma if we have an address */
if ((saa->cap & 3) && saa->win.vidadr != 0)
saawrite(((SAA7146_MC1_TR_E_1 |
SAA7146_MC1_TR_E_2) << 16) | 0xffff,
SAA7146_MC1);
return 0;
}
case VIDIOCGWIN:
{
struct video_window vw;
vw.x = saa->win.x;
vw.y = saa->win.y;
vw.width = saa->win.width;
vw.height = saa->win.height;
vw.chromakey = 0;
vw.flags = 0;
if (copy_to_user(arg, &vw, sizeof(vw)))
return -EFAULT;
return 0;
}
case VIDIOCCAPTURE:
{
int v;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if (v == 0) {
saa->cap &= ~1;
saawrite((SAA7146_MC1_TR_E_1 << 16),
SAA7146_MC1);
} else {
if (saa->win.vidadr == 0 || saa->win.width == 0
|| saa->win.height == 0)
return -EINVAL;
saa->cap |= 1;
saawrite((SAA7146_MC1_TR_E_1 << 16) | 0xffff,
SAA7146_MC1);
}
return 0;
}
case VIDIOCGFBUF:
{
struct video_buffer v;
v.base = (void *) saa->win.vidadr;
v.height = saa->win.sheight;
v.width = saa->win.swidth;
v.depth = saa->win.depth;
v.bytesperline = saa->win.bpl;
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSFBUF:
{
struct video_buffer v;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
if (v.depth != 8 && v.depth != 15 && v.depth != 16 &&
v.depth != 24 && v.depth != 32 && v.width > 16 &&
v.height > 16 && v.bytesperline > 16)
return -EINVAL;
if (v.base)
saa->win.vidadr = (unsigned long) v.base;
saa->win.sheight = v.height;
saa->win.swidth = v.width;
saa->win.bpp = ((v.depth + 7) & 0x38) / 8;
saa->win.depth = v.depth;
saa->win.bpl = v.bytesperline;
DEBUG(printk("Display at %p is %d by %d, bytedepth %d, bpl %d\n",
v.base, v.width, v.height, saa->win.bpp, saa->win.bpl));
saa7146_set_winsize(saa);
return 0;
}
case VIDIOCKEY:
{
/* Will be handled higher up .. */
return 0;
}
case VIDIOCGAUDIO:
{
struct video_audio v;
v = saa->audio_dev;
v.flags &= ~(VIDEO_AUDIO_MUTE | VIDEO_AUDIO_MUTABLE);
v.flags |= VIDEO_AUDIO_MUTABLE | VIDEO_AUDIO_VOLUME;
strcpy(v.name, "MPEG");
v.mode = VIDEO_SOUND_STEREO;
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSAUDIO:
{
struct video_audio v;
int i;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
i = (~(v.volume>>8))&0xff;
if (!HaveCS4341) {
if (v.flags & VIDEO_AUDIO_MUTE) {
debiwrite(saa, debNormal,
IBM_MP2_FRNT_ATTEN,
0xffff, 2);
}
if (!(v.flags & VIDEO_AUDIO_MUTE))
debiwrite(saa, debNormal,
IBM_MP2_FRNT_ATTEN,
0x0000, 2);
if (v.flags & VIDEO_AUDIO_VOLUME)
debiwrite(saa, debNormal,
IBM_MP2_FRNT_ATTEN,
(i<<8)|i, 2);
} else {
if (v.flags & VIDEO_AUDIO_MUTE)
cs4341_setlevel(saa, 0xff, 0xff);
if (!(v.flags & VIDEO_AUDIO_MUTE))
cs4341_setlevel(saa, 0, 0);
if (v.flags & VIDEO_AUDIO_VOLUME)
cs4341_setlevel(saa, i, i);
}
saa->audio_dev = v;
return 0;
}
case VIDIOCGUNIT:
{
struct video_unit vu;
vu.video = saa->video_dev.minor;
vu.vbi = VIDEO_NO_UNIT;
vu.radio = VIDEO_NO_UNIT;
vu.audio = VIDEO_NO_UNIT;
vu.teletext = VIDEO_NO_UNIT;
if (copy_to_user(arg, &vu, sizeof(vu)))
return -EFAULT;
return 0;
}
case VIDIOCSPLAYMODE:
{
struct video_play_mode pmode;
if (copy_from_user((void *) &pmode, arg,
sizeof(struct video_play_mode)))
return -EFAULT;
switch (pmode.mode) {
case VID_PLAY_VID_OUT_MODE:
if (pmode.p1 != VIDEO_MODE_NTSC &&
pmode.p1 != VIDEO_MODE_PAL)
return -EINVAL;
set_out_format(saa, pmode.p1);
return 0;
case VID_PLAY_GENLOCK:
debiwrite(saa, debNormal,
XILINX_CTL0,
(pmode.p1 ? 0x8000 : 0x8080),
2);
if (NewCard)
set_genlock_offset(saa,
pmode.p2);
return 0;
case VID_PLAY_NORMAL:
debiwrite(saa, debNormal,
IBM_MP2_CHIP_CONTROL,
ChipControl, 2);
ibm_send_command(saa,
IBM_MP2_PLAY, 0, 0);
saa->playmode = pmode.mode;
return 0;
case VID_PLAY_PAUSE:
/* IBM removed the PAUSE command */
/* they say use SINGLE_FRAME now */
case VID_PLAY_SINGLE_FRAME:
ibm_send_command(saa,
IBM_MP2_SINGLE_FRAME,
0, 0);
if (saa->playmode == pmode.mode) {
debiwrite(saa, debNormal,
IBM_MP2_CHIP_CONTROL,
ChipControl, 2);
}
saa->playmode = pmode.mode;
return 0;
case VID_PLAY_FAST_FORWARD:
ibm_send_command(saa,
IBM_MP2_FAST_FORWARD, 0, 0);
saa->playmode = pmode.mode;
return 0;
case VID_PLAY_SLOW_MOTION:
ibm_send_command(saa,
IBM_MP2_SLOW_MOTION,
pmode.p1, 0);
saa->playmode = pmode.mode;
return 0;
case VID_PLAY_IMMEDIATE_NORMAL:
/* ensure transfers resume */
debiwrite(saa, debNormal,
IBM_MP2_CHIP_CONTROL,
ChipControl, 2);
ibm_send_command(saa,
IBM_MP2_IMED_NORM_PLAY, 0, 0);
saa->playmode = VID_PLAY_NORMAL;
return 0;
case VID_PLAY_SWITCH_CHANNELS:
saa->audhead = saa->audtail = 0;
saa->vidhead = saa->vidtail = 0;
ibm_send_command(saa,
IBM_MP2_FREEZE_FRAME, 0, 1);
ibm_send_command(saa,
IBM_MP2_RESET_AUD_RATE, 0, 1);
debiwrite(saa, debNormal,
IBM_MP2_CHIP_CONTROL, 0, 2);
ibm_send_command(saa,
IBM_MP2_CHANNEL_SWITCH, 0, 1);
debiwrite(saa, debNormal,
IBM_MP2_CHIP_CONTROL,
ChipControl, 2);
ibm_send_command(saa,
IBM_MP2_PLAY, 0, 0);
saa->playmode = VID_PLAY_NORMAL;
return 0;
case VID_PLAY_FREEZE_FRAME:
ibm_send_command(saa,
IBM_MP2_FREEZE_FRAME, 0, 0);
saa->playmode = pmode.mode;
return 0;
case VID_PLAY_STILL_MODE:
ibm_send_command(saa,
IBM_MP2_SET_STILL_MODE, 0, 0);
saa->playmode = pmode.mode;
return 0;
case VID_PLAY_MASTER_MODE:
if (pmode.p1 == VID_PLAY_MASTER_NONE)
saa->boardcfg[1] = 0x13;
else if (pmode.p1 ==
VID_PLAY_MASTER_VIDEO)
saa->boardcfg[1] = 0x23;
else if (pmode.p1 ==
VID_PLAY_MASTER_AUDIO)
saa->boardcfg[1] = 0x43;
else
return -EINVAL;
debiwrite(saa, debNormal,
IBM_MP2_CHIP_CONTROL,
ChipControl, 2);
return 0;
case VID_PLAY_ACTIVE_SCANLINES:
if (CurrentMode == VIDEO_MODE_PAL) {
if (pmode.p1 < 1 ||
pmode.p2 > 625)
return -EINVAL;
saa->boardcfg[5] = pmode.p1;
saa->boardcfg[55] = (pmode.p1 +
(pmode.p2/2) - 1) &
0xff;
} else {
if (pmode.p1 < 4 ||
pmode.p2 > 525)
return -EINVAL;
saa->boardcfg[4] = pmode.p1;
saa->boardcfg[54] = (pmode.p1 +
(pmode.p2/2) - 4) &
0xff;
}
set_out_format(saa, CurrentMode);
case VID_PLAY_RESET:
return do_ibm_reset(saa);
case VID_PLAY_END_MARK:
if (saa->endmarktail <
saa->endmarkhead) {
if (saa->endmarkhead -
saa->endmarktail < 2)
return -ENOSPC;
} else if (saa->endmarkhead <=
saa->endmarktail) {
if (saa->endmarktail -
saa->endmarkhead >
(MAX_MARKS - 2))
return -ENOSPC;
} else
return -ENOSPC;
saa->endmark[saa->endmarktail] =
saa->audtail;
saa->endmarktail++;
if (saa->endmarktail >= MAX_MARKS)
saa->endmarktail = 0;
}
return -EINVAL;
}
case VIDIOCSWRITEMODE:
{
int mode;
if (copy_from_user((void *) &mode, arg, sizeof(int)))
return -EFAULT;
if (mode == VID_WRITE_MPEG_AUD ||
mode == VID_WRITE_MPEG_VID ||
mode == VID_WRITE_CC ||
mode == VID_WRITE_TTX ||
mode == VID_WRITE_OSD) {
saa->writemode = mode;
return 0;
}
return -EINVAL;
}
case VIDIOCSMICROCODE:
{
struct video_code ucode;
__u8 *udata;
int i;
if (copy_from_user(&ucode, arg, sizeof(ucode)))
return -EFAULT;
if (ucode.datasize > 65536 || ucode.datasize < 1024 ||
strncmp(ucode.loadwhat, "dec", 3))
return -EINVAL;
if ((udata = vmalloc(ucode.datasize)) == NULL)
return -ENOMEM;
if (copy_from_user(udata, ucode.data, ucode.datasize)) {
vfree(udata);
return -EFAULT;
}
ucode.data = udata;
if (!strncmp(ucode.loadwhat, "decoder.aud", 11)
|| !strncmp(ucode.loadwhat, "decoder.vid", 11))
i = initialize_ibmmpeg2(&ucode);
else
i = initialize_fpga(&ucode);
vfree(udata);
if (i)
return -EINVAL;
return 0;
}
case VIDIOCGCHAN: /* this makes xawtv happy */
{
struct video_channel v;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
v.flags = VIDEO_VC_AUDIO;
v.tuners = 0;
v.type = VID_TYPE_MPEG_DECODER;
v.norm = CurrentMode;
strcpy(v.name, "MPEG2");
if (copy_to_user(arg, &v, sizeof(v)))
return -EFAULT;
return 0;
}
case VIDIOCSCHAN: /* this makes xawtv happy */
{
struct video_channel v;
if (copy_from_user(&v, arg, sizeof(v)))
return -EFAULT;
/* do nothing */
return 0;
}
default:
return -ENOIOCTLCMD;
}
return 0;
}
static int saa_mmap(struct file *file, struct vm_area_struct *vma)
{
struct saa7146 *saa = file->private_data;
printk(KERN_DEBUG "stradis%d: saa_mmap called\n", saa->nr);
return -EINVAL;
}
static ssize_t saa_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
return -EINVAL;
}
static ssize_t saa_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct saa7146 *saa = file->private_data;
unsigned long todo = count;
int blocksize, split;
unsigned long flags;
while (todo > 0) {
if (saa->writemode == VID_WRITE_MPEG_AUD) {
spin_lock_irqsave(&saa->lock, flags);
if (saa->audhead <= saa->audtail)
blocksize = 65536-(saa->audtail - saa->audhead);
else
blocksize = saa->audhead - saa->audtail;
spin_unlock_irqrestore(&saa->lock, flags);
if (blocksize < 16384) {
saawrite(SAA7146_PSR_DEBI_S |
SAA7146_PSR_PIN1, SAA7146_IER);
saawrite(SAA7146_PSR_PIN1, SAA7146_PSR);
/* wait for buffer space to open */
interruptible_sleep_on(&saa->audq);
}
spin_lock_irqsave(&saa->lock, flags);
if (saa->audhead <= saa->audtail) {
blocksize = 65536-(saa->audtail - saa->audhead);
split = 65536 - saa->audtail;
} else {
blocksize = saa->audhead - saa->audtail;
split = 65536;
}
spin_unlock_irqrestore(&saa->lock, flags);
blocksize--;
if (blocksize > todo)
blocksize = todo;
/* double check that we really have space */
if (!blocksize)
return -ENOSPC;
if (split < blocksize) {
if (copy_from_user(saa->audbuf +
saa->audtail, buf, split))
return -EFAULT;
buf += split;
todo -= split;
blocksize -= split;
saa->audtail = 0;
}
if (copy_from_user(saa->audbuf + saa->audtail, buf,
blocksize))
return -EFAULT;
saa->audtail += blocksize;
todo -= blocksize;
buf += blocksize;
saa->audtail &= 0xffff;
} else if (saa->writemode == VID_WRITE_MPEG_VID) {
spin_lock_irqsave(&saa->lock, flags);
if (saa->vidhead <= saa->vidtail)
blocksize=524288-(saa->vidtail - saa->vidhead);
else
blocksize = saa->vidhead - saa->vidtail;
spin_unlock_irqrestore(&saa->lock, flags);
if (blocksize < 65536) {
saawrite(SAA7146_PSR_DEBI_S |
SAA7146_PSR_PIN1, SAA7146_IER);
saawrite(SAA7146_PSR_PIN1, SAA7146_PSR);
/* wait for buffer space to open */
interruptible_sleep_on(&saa->vidq);
}
spin_lock_irqsave(&saa->lock, flags);
if (saa->vidhead <= saa->vidtail) {
blocksize=524288-(saa->vidtail - saa->vidhead);
split = 524288 - saa->vidtail;
} else {
blocksize = saa->vidhead - saa->vidtail;
split = 524288;
}
spin_unlock_irqrestore(&saa->lock, flags);
blocksize--;
if (blocksize > todo)
blocksize = todo;
/* double check that we really have space */
if (!blocksize)
return -ENOSPC;
if (split < blocksize) {
if (copy_from_user(saa->vidbuf +
saa->vidtail, buf, split))
return -EFAULT;
buf += split;
todo -= split;
blocksize -= split;
saa->vidtail = 0;
}
if (copy_from_user(saa->vidbuf + saa->vidtail, buf,
blocksize))
return -EFAULT;
saa->vidtail += blocksize;
todo -= blocksize;
buf += blocksize;
saa->vidtail &= 0x7ffff;
} else if (saa->writemode == VID_WRITE_OSD) {
if (count > 131072)
return -ENOSPC;
if (copy_from_user(saa->osdbuf, buf, count))
return -EFAULT;
buf += count;
saa->osdhead = 0;
saa->osdtail = count;
debiwrite(saa, debNormal, IBM_MP2_OSD_ADDR, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_OSD_LINK_ADDR, 0, 2);
debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00d, 2);
debiwrite(saa, debNormal, IBM_MP2_DISP_MODE,
debiread(saa, debNormal,
IBM_MP2_DISP_MODE, 2) | 1, 2);
/* trigger osd data transfer */
saawrite(SAA7146_PSR_DEBI_S |
SAA7146_PSR_PIN1, SAA7146_IER);
saawrite(SAA7146_PSR_PIN1, SAA7146_PSR);
}
}
return count;
}
static int saa_open(struct inode *inode, struct file *file)
{
struct saa7146 *saa = NULL;
unsigned int minor = iminor(inode);
int i;
for (i = 0; i < SAA7146_MAX; i++) {
if (saa7146s[i].video_dev.minor == minor) {
saa = &saa7146s[i];
}
}
if (saa == NULL) {
return -ENODEV;
}
file->private_data = saa;
//saa->video_dev.busy = 0; /* old hack to support multiple open */
saa->user++;
if (saa->user > 1)
return 0; /* device open already, don't reset */
saa->writemode = VID_WRITE_MPEG_VID; /* default to video */
return 0;
}
static int saa_release(struct inode *inode, struct file *file)
{
struct saa7146 *saa = file->private_data;
saa->user--;
//saa->video_dev.busy = 0; /* old hack to support multiple open */
if (saa->user > 0) /* still someone using device */
return 0;
saawrite(0x007f0000, SAA7146_MC1); /* stop all overlay dma */
return 0;
}
static struct file_operations saa_fops =
{
.owner = THIS_MODULE,
.open = saa_open,
.release = saa_release,
.ioctl = saa_ioctl,
.read = saa_read,
.llseek = no_llseek,
.write = saa_write,
.mmap = saa_mmap,
};
/* template for video_device-structure */
static struct video_device saa_template =
{
.name = "SAA7146A",
.type = VID_TYPE_CAPTURE | VID_TYPE_OVERLAY,
.hardware = VID_HARDWARE_SAA7146,
.fops = &saa_fops,
.minor = -1,
};
static int configure_saa7146(struct pci_dev *dev, int num)
{
int result;
struct saa7146 *saa;
saa = &saa7146s[num];
saa->endmarkhead = saa->endmarktail = 0;
saa->win.x = saa->win.y = 0;
saa->win.width = saa->win.cropwidth = 720;
saa->win.height = saa->win.cropheight = 480;
saa->win.cropx = saa->win.cropy = 0;
saa->win.bpp = 2;
saa->win.depth = 16;
saa->win.color_fmt = palette2fmt[VIDEO_PALETTE_RGB565];
saa->win.bpl = 1024 * saa->win.bpp;
saa->win.swidth = 1024;
saa->win.sheight = 768;
saa->picture.brightness = 32768;
saa->picture.contrast = 38768;
saa->picture.colour = 32768;
saa->cap = 0;
saa->dev = dev;
saa->nr = num;
saa->playmode = VID_PLAY_NORMAL;
memset(saa->boardcfg, 0, 64); /* clear board config area */
saa->saa7146_mem = NULL;
saa->dmavid1 = saa->dmavid2 = saa->dmavid3 = saa->dmaa1in =
saa->dmaa1out = saa->dmaa2in = saa->dmaa2out =
saa->pagevid1 = saa->pagevid2 = saa->pagevid3 = saa->pagea1in =
saa->pagea1out = saa->pagea2in = saa->pagea2out =
saa->pagedebi = saa->dmaRPS1 = saa->dmaRPS2 = saa->pageRPS1 =
saa->pageRPS2 = NULL;
saa->audbuf = saa->vidbuf = saa->osdbuf = saa->dmadebi = NULL;
saa->audhead = saa->vidtail = 0;
init_waitqueue_head(&saa->i2cq);
init_waitqueue_head(&saa->audq);
init_waitqueue_head(&saa->debiq);
init_waitqueue_head(&saa->vidq);
spin_lock_init(&saa->lock);
if (pci_enable_device(dev))
return -EIO;
saa->id = dev->device;
saa->irq = dev->irq;
saa->video_dev.minor = -1;
saa->saa7146_adr = pci_resource_start(dev, 0);
pci_read_config_byte(dev, PCI_CLASS_REVISION, &saa->revision);
saa->saa7146_mem = ioremap(saa->saa7146_adr, 0x200);
if (!saa->saa7146_mem)
return -EIO;
memcpy(&saa->video_dev, &saa_template, sizeof(saa_template));
saawrite(0, SAA7146_IER); /* turn off all interrupts */
result = request_irq(saa->irq, saa7146_irq,
SA_SHIRQ | SA_INTERRUPT, "stradis", (void *) saa);
if (result == -EINVAL)
printk(KERN_ERR "stradis%d: Bad irq number or handler\n",
num);
if (result == -EBUSY)
printk(KERN_ERR "stradis%d: IRQ %ld busy, change your PnP"
" config in BIOS\n", num, saa->irq);
if (result < 0) {
iounmap(saa->saa7146_mem);
return result;
}
pci_set_master(dev);
if (video_register_device(&saa->video_dev, VFL_TYPE_GRABBER, video_nr) < 0) {
iounmap(saa->saa7146_mem);
return -1;
}
return 0;
}
static int init_saa7146(int i)
{
struct saa7146 *saa = &saa7146s[i];
saa->user = 0;
/* reset the saa7146 */
saawrite(0xffff0000, SAA7146_MC1);
mdelay(5);
/* enable debi and i2c transfers and pins */
saawrite(((SAA7146_MC1_EDP | SAA7146_MC1_EI2C |
SAA7146_MC1_TR_E_DEBI) << 16) | 0xffff, SAA7146_MC1);
/* ensure proper state of chip */
saawrite(0x00000000, SAA7146_PAGE1);
saawrite(0x00f302c0, SAA7146_NUM_LINE_BYTE1);
saawrite(0x00000000, SAA7146_PAGE2);
saawrite(0x01400080, SAA7146_NUM_LINE_BYTE2);
saawrite(0x00000000, SAA7146_DD1_INIT);
saawrite(0x00000000, SAA7146_DD1_STREAM_B);
saawrite(0x00000000, SAA7146_DD1_STREAM_A);
saawrite(0x00000000, SAA7146_BRS_CTRL);
saawrite(0x80400040, SAA7146_BCS_CTRL);
saawrite(0x0000e000 /*| (1<<29)*/, SAA7146_HPS_CTRL);
saawrite(0x00000060, SAA7146_CLIP_FORMAT_CTRL);
saawrite(0x00000000, SAA7146_ACON1);
saawrite(0x00000000, SAA7146_ACON2);
saawrite(0x00000600, SAA7146_I2C_STATUS);
saawrite(((SAA7146_MC2_UPLD_D1_B | SAA7146_MC2_UPLD_D1_A |
SAA7146_MC2_UPLD_BRS | SAA7146_MC2_UPLD_HPS_H |
SAA7146_MC2_UPLD_HPS_V | SAA7146_MC2_UPLD_DMA2 |
SAA7146_MC2_UPLD_DMA1 | SAA7146_MC2_UPLD_I2C) << 16) | 0xffff,
SAA7146_MC2);
/* setup arbitration control registers */
saawrite(0x1412121a, SAA7146_PCI_BT_V1);
/* allocate 32k dma buffer + 4k for page table */
if ((saa->dmadebi = kmalloc(32768 + 4096, GFP_KERNEL)) == NULL) {
printk(KERN_ERR "stradis%d: debi kmalloc failed\n", i);
return -1;
}
#if 0
saa->pagedebi = saa->dmadebi + 32768; /* top 4k is for mmu */
saawrite(virt_to_bus(saa->pagedebi) /*|0x800 */ , SAA7146_DEBI_PAGE);
for (i = 0; i < 12; i++) /* setup mmu page table */
saa->pagedebi[i] = virt_to_bus((saa->dmadebi + i * 4096));
#endif
saa->audhead = saa->vidhead = saa->osdhead = 0;
saa->audtail = saa->vidtail = saa->osdtail = 0;
if (saa->vidbuf == NULL)
if ((saa->vidbuf = vmalloc(524288)) == NULL) {
printk(KERN_ERR "stradis%d: malloc failed\n", saa->nr);
return -ENOMEM;
}
if (saa->audbuf == NULL)
if ((saa->audbuf = vmalloc(65536)) == NULL) {
printk(KERN_ERR "stradis%d: malloc failed\n", saa->nr);
vfree(saa->vidbuf);
saa->vidbuf = NULL;
return -ENOMEM;
}
if (saa->osdbuf == NULL)
if ((saa->osdbuf = vmalloc(131072)) == NULL) {
printk(KERN_ERR "stradis%d: malloc failed\n", saa->nr);
vfree(saa->vidbuf);
vfree(saa->audbuf);
saa->vidbuf = saa->audbuf = NULL;
return -ENOMEM;
}
/* allocate 81920 byte buffer for clipping */
if ((saa->dmavid2 = kmalloc(VIDEO_CLIPMAP_SIZE, GFP_KERNEL)) == NULL) {
printk(KERN_ERR "stradis%d: clip kmalloc failed\n", saa->nr);
vfree(saa->vidbuf);
vfree(saa->audbuf);
vfree(saa->osdbuf);
saa->vidbuf = saa->audbuf = saa->osdbuf = NULL;
saa->dmavid2 = NULL;
return -1;
}
memset(saa->dmavid2, 0x00, VIDEO_CLIPMAP_SIZE); /* clip everything */
/* setup clipping registers */
saawrite(virt_to_bus(saa->dmavid2), SAA7146_BASE_EVEN2);
saawrite(virt_to_bus(saa->dmavid2) + 128, SAA7146_BASE_ODD2);
saawrite(virt_to_bus(saa->dmavid2) + VIDEO_CLIPMAP_SIZE,
SAA7146_PROT_ADDR2);
saawrite(256, SAA7146_PITCH2);
saawrite(4, SAA7146_PAGE2); /* dma direction: read, no byteswap */
saawrite(((SAA7146_MC2_UPLD_DMA2) << 16) | SAA7146_MC2_UPLD_DMA2,
SAA7146_MC2);
I2CBusScan(saa);
return 0;
}
static void release_saa(void)
{
u8 command;
int i;
struct saa7146 *saa;
for (i = 0; i < saa_num; i++) {
saa = &saa7146s[i];
/* turn off all capturing, DMA and IRQs */
saawrite(0xffff0000, SAA7146_MC1); /* reset chip */
saawrite(0, SAA7146_MC2);
saawrite(0, SAA7146_IER);
saawrite(0xffffffffUL, SAA7146_ISR);
/* disable PCI bus-mastering */
pci_read_config_byte(saa->dev, PCI_COMMAND, &command);
command &= ~PCI_COMMAND_MASTER;
pci_write_config_byte(saa->dev, PCI_COMMAND, command);
/* unmap and free memory */
saa->audhead = saa->audtail = saa->osdhead = 0;
saa->vidhead = saa->vidtail = saa->osdtail = 0;
vfree(saa->vidbuf);
vfree(saa->audbuf);
vfree(saa->osdbuf);
kfree(saa->dmavid2);
saa->audbuf = saa->vidbuf = saa->osdbuf = NULL;
saa->dmavid2 = NULL;
kfree(saa->dmadebi);
kfree(saa->dmavid1);
kfree(saa->dmavid3);
kfree(saa->dmaa1in);
kfree(saa->dmaa1out);
kfree(saa->dmaa2in);
kfree(saa->dmaa2out);
kfree(saa->dmaRPS1);
kfree(saa->dmaRPS2);
free_irq(saa->irq, saa);
if (saa->saa7146_mem)
iounmap(saa->saa7146_mem);
if (saa->video_dev.minor != -1)
video_unregister_device(&saa->video_dev);
}
}
static int __init stradis_init (void)
{
struct pci_dev *dev = NULL;
int result = 0, i;
saa_num = 0;
while ((dev = pci_find_device(PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, dev))) {
if (!dev->subsystem_vendor)
printk(KERN_INFO "stradis%d: rev1 decoder\n", saa_num);
else
printk(KERN_INFO "stradis%d: SDM2xx found\n", saa_num);
result = configure_saa7146(dev, saa_num++);
if (result)
return result;
}
if (saa_num)
printk(KERN_INFO "stradis: %d card(s) found.\n", saa_num);
else
return -EINVAL;
for (i = 0; i < saa_num; i++)
if (init_saa7146(i) < 0) {
release_saa();
return -EIO;
}
return 0;
}
static void __exit stradis_exit (void)
{
release_saa();
printk(KERN_INFO "stradis: module cleanup complete\n");
}
module_init(stradis_init);
module_exit(stradis_exit);
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