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android_kernel_xiaomi_sm8350/drivers/media/video/stradis.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

2213 lines
64 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 <media/v4l2-common.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;
}
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 saa7146 *saa = 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] && !strncmp("decxl",
bitdata->loadwhat, 8))
loadfile = 1; /* special */
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 && 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);
i = debiread(saa, debNormal, IBM_MP2_OSD_SIZE, 2);
if (i != 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 Inited\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;
/* stop capture */
if (vw.flags || vw.width < 16 || vw.height < 16) {
saawrite((SAA7146_MC1_TR_E_1 << 16),
SAA7146_MC1);
return -EINVAL;
}
/* 32-bit align start and adjust width */
if (saa->win.bpp < 4) {
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) {
vcp = vmalloc(sizeof(struct video_clip) *
vw.clipcount);
if (vcp == 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 video_device *vdev = video_devdata(file);
struct saa7146 *saa = container_of(vdev, struct saa7146, video_dev);
file->private_data = saa;
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--;
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,
.compat_ioctl = v4l_compat_ioctl32,
.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 __devinit configure_saa7146(struct pci_dev *pdev, int num)
{
int retval;
struct saa7146 *saa = pci_get_drvdata(pdev);
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->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);
retval = pci_enable_device(pdev);
if (retval) {
dev_err(&pdev->dev, "%d: pci_enable_device failed!\n", num);
goto err;
}
saa->id = pdev->device;
saa->irq = pdev->irq;
saa->video_dev.minor = -1;
saa->saa7146_adr = pci_resource_start(pdev, 0);
pci_read_config_byte(pdev, PCI_CLASS_REVISION, &saa->revision);
saa->saa7146_mem = ioremap(saa->saa7146_adr, 0x200);
if (saa->saa7146_mem == NULL) {
dev_err(&pdev->dev, "%d: ioremap failed!\n", num);
retval = -EIO;
goto err;
}
memcpy(&saa->video_dev, &saa_template, sizeof(saa_template));
saawrite(0, SAA7146_IER); /* turn off all interrupts */
retval = request_irq(saa->irq, saa7146_irq, IRQF_SHARED | IRQF_DISABLED,
"stradis", saa);
if (retval == -EINVAL)
dev_err(&pdev->dev, "%d: Bad irq number or handler\n", num);
else if (retval == -EBUSY)
dev_err(&pdev->dev, "%d: IRQ %ld busy, change your PnP config "
"in BIOS\n", num, saa->irq);
if (retval < 0)
goto errio;
pci_set_master(pdev);
retval = video_register_device(&saa->video_dev, VFL_TYPE_GRABBER,
video_nr);
if (retval < 0) {
dev_err(&pdev->dev, "%d: error in registering video device!\n",
num);
goto errio;
}
return 0;
errio:
iounmap(saa->saa7146_mem);
err:
return retval;
}
static int __devinit init_saa7146(struct pci_dev *pdev)
{
struct saa7146 *saa = pci_get_drvdata(pdev);
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) {
dev_err(&pdev->dev, "%d: debi kmalloc failed\n", saa->nr);
goto err;
}
#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 && (saa->vidbuf = vmalloc(524288)) == NULL) {
dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr);
goto err;
}
if (saa->audbuf == NULL && (saa->audbuf = vmalloc(65536)) == NULL) {
dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr);
goto errfree;
}
if (saa->osdbuf == NULL && (saa->osdbuf = vmalloc(131072)) == NULL) {
dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr);
goto errfree;
}
/* allocate 81920 byte buffer for clipping */
if ((saa->dmavid2 = kzalloc(VIDEO_CLIPMAP_SIZE, GFP_KERNEL)) == NULL) {
dev_err(&pdev->dev, "%d: clip kmalloc failed\n", saa->nr);
goto errfree;
}
/* 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;
errfree:
vfree(saa->osdbuf);
vfree(saa->audbuf);
vfree(saa->vidbuf);
saa->audbuf = saa->osdbuf = saa->vidbuf = NULL;
err:
return -ENOMEM;
}
static void stradis_release_saa(struct pci_dev *pdev)
{
u8 command;
struct saa7146 *saa = pci_get_drvdata(pdev);
/* 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(pdev, PCI_COMMAND, &command);
command &= ~PCI_COMMAND_MASTER;
pci_write_config_byte(pdev, 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 __devinit stradis_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int retval = -EINVAL;
if (saa_num >= SAA7146_MAX)
goto err;
if (!pdev->subsystem_vendor)
dev_info(&pdev->dev, "%d: rev1 decoder\n", saa_num);
else
dev_info(&pdev->dev, "%d: SDM2xx found\n", saa_num);
pci_set_drvdata(pdev, &saa7146s[saa_num]);
retval = configure_saa7146(pdev, saa_num);
if (retval) {
dev_err(&pdev->dev, "%d: error in configuring\n", saa_num);
goto err;
}
if (init_saa7146(pdev) < 0) {
dev_err(&pdev->dev, "%d: error in initialization\n", saa_num);
retval = -EIO;
goto errrel;
}
saa_num++;
return 0;
errrel:
stradis_release_saa(pdev);
err:
return retval;
}
static void __devexit stradis_remove(struct pci_dev *pdev)
{
stradis_release_saa(pdev);
}
static struct pci_device_id stradis_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146) },
{ 0 }
};
static struct pci_driver stradis_driver = {
.name = "stradis",
.id_table = stradis_pci_tbl,
.probe = stradis_probe,
.remove = __devexit_p(stradis_remove)
};
static int __init stradis_init(void)
{
int retval;
saa_num = 0;
retval = pci_register_driver(&stradis_driver);
if (retval)
printk(KERN_ERR "stradis: Unable to register pci driver.\n");
return retval;
}
static void __exit stradis_exit(void)
{
pci_unregister_driver(&stradis_driver);
printk(KERN_INFO "stradis: module cleanup complete\n");
}
module_init(stradis_init);
module_exit(stradis_exit);
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