mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 19:26:25 +00:00
b4178ab58a
paride_register() returns 1 on success, 0 on failure and module init
code looks like
static int __init foo_init(void)
{
return paride_register(&foo) - 1;
}
which is not what one get used to. Converted to usual 0/-E convention.
In case of kbic driver, unwind registration. It was just
return (paride_register(&k951)||paride_register(&k971))-1;
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
276 lines
6.2 KiB
C
276 lines
6.2 KiB
C
/*
|
|
friq.c (c) 1998 Grant R. Guenther <grant@torque.net>
|
|
Under the terms of the GNU General Public License
|
|
|
|
friq.c is a low-level protocol driver for the Freecom "IQ"
|
|
parallel port IDE adapter. Early versions of this adapter
|
|
use the 'frpw' protocol.
|
|
|
|
Freecom uses this adapter in a battery powered external
|
|
CD-ROM drive. It is also used in LS-120 drives by
|
|
Maxell and Panasonic, and other devices.
|
|
|
|
The battery powered drive requires software support to
|
|
control the power to the drive. This module enables the
|
|
drive power when the high level driver (pcd) is loaded
|
|
and disables it when the module is unloaded. Note, if
|
|
the friq module is built in to the kernel, the power
|
|
will never be switched off, so other means should be
|
|
used to conserve battery power.
|
|
|
|
*/
|
|
|
|
/* Changes:
|
|
|
|
1.01 GRG 1998.12.20 Added support for soft power switch
|
|
*/
|
|
|
|
#define FRIQ_VERSION "1.01"
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/wait.h>
|
|
#include <asm/io.h>
|
|
|
|
#include "paride.h"
|
|
|
|
#define CMD(x) w2(4);w0(0xff);w0(0xff);w0(0x73);w0(0x73);\
|
|
w0(0xc9);w0(0xc9);w0(0x26);w0(0x26);w0(x);w0(x);
|
|
|
|
#define j44(l,h) (((l>>4)&0x0f)|(h&0xf0))
|
|
|
|
/* cont = 0 - access the IDE register file
|
|
cont = 1 - access the IDE command set
|
|
*/
|
|
|
|
static int cont_map[2] = { 0x08, 0x10 };
|
|
|
|
static int friq_read_regr( PIA *pi, int cont, int regr )
|
|
|
|
{ int h,l,r;
|
|
|
|
r = regr + cont_map[cont];
|
|
|
|
CMD(r);
|
|
w2(6); l = r1();
|
|
w2(4); h = r1();
|
|
w2(4);
|
|
|
|
return j44(l,h);
|
|
|
|
}
|
|
|
|
static void friq_write_regr( PIA *pi, int cont, int regr, int val)
|
|
|
|
{ int r;
|
|
|
|
r = regr + cont_map[cont];
|
|
|
|
CMD(r);
|
|
w0(val);
|
|
w2(5);w2(7);w2(5);w2(4);
|
|
}
|
|
|
|
static void friq_read_block_int( PIA *pi, char * buf, int count, int regr )
|
|
|
|
{ int h, l, k, ph;
|
|
|
|
switch(pi->mode) {
|
|
|
|
case 0: CMD(regr);
|
|
for (k=0;k<count;k++) {
|
|
w2(6); l = r1();
|
|
w2(4); h = r1();
|
|
buf[k] = j44(l,h);
|
|
}
|
|
w2(4);
|
|
break;
|
|
|
|
case 1: ph = 2;
|
|
CMD(regr+0xc0);
|
|
w0(0xff);
|
|
for (k=0;k<count;k++) {
|
|
w2(0xa4 + ph);
|
|
buf[k] = r0();
|
|
ph = 2 - ph;
|
|
}
|
|
w2(0xac); w2(0xa4); w2(4);
|
|
break;
|
|
|
|
case 2: CMD(regr+0x80);
|
|
for (k=0;k<count-2;k++) buf[k] = r4();
|
|
w2(0xac); w2(0xa4);
|
|
buf[count-2] = r4();
|
|
buf[count-1] = r4();
|
|
w2(4);
|
|
break;
|
|
|
|
case 3: CMD(regr+0x80);
|
|
for (k=0;k<(count/2)-1;k++) ((u16 *)buf)[k] = r4w();
|
|
w2(0xac); w2(0xa4);
|
|
buf[count-2] = r4();
|
|
buf[count-1] = r4();
|
|
w2(4);
|
|
break;
|
|
|
|
case 4: CMD(regr+0x80);
|
|
for (k=0;k<(count/4)-1;k++) ((u32 *)buf)[k] = r4l();
|
|
buf[count-4] = r4();
|
|
buf[count-3] = r4();
|
|
w2(0xac); w2(0xa4);
|
|
buf[count-2] = r4();
|
|
buf[count-1] = r4();
|
|
w2(4);
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
static void friq_read_block( PIA *pi, char * buf, int count)
|
|
|
|
{ friq_read_block_int(pi,buf,count,0x08);
|
|
}
|
|
|
|
static void friq_write_block( PIA *pi, char * buf, int count )
|
|
|
|
{ int k;
|
|
|
|
switch(pi->mode) {
|
|
|
|
case 0:
|
|
case 1: CMD(8); w2(5);
|
|
for (k=0;k<count;k++) {
|
|
w0(buf[k]);
|
|
w2(7);w2(5);
|
|
}
|
|
w2(4);
|
|
break;
|
|
|
|
case 2: CMD(0xc8); w2(5);
|
|
for (k=0;k<count;k++) w4(buf[k]);
|
|
w2(4);
|
|
break;
|
|
|
|
case 3: CMD(0xc8); w2(5);
|
|
for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]);
|
|
w2(4);
|
|
break;
|
|
|
|
case 4: CMD(0xc8); w2(5);
|
|
for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]);
|
|
w2(4);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void friq_connect ( PIA *pi )
|
|
|
|
{ pi->saved_r0 = r0();
|
|
pi->saved_r2 = r2();
|
|
w2(4);
|
|
}
|
|
|
|
static void friq_disconnect ( PIA *pi )
|
|
|
|
{ CMD(0x20);
|
|
w0(pi->saved_r0);
|
|
w2(pi->saved_r2);
|
|
}
|
|
|
|
static int friq_test_proto( PIA *pi, char * scratch, int verbose )
|
|
|
|
{ int j, k, r;
|
|
int e[2] = {0,0};
|
|
|
|
pi->saved_r0 = r0();
|
|
w0(0xff); udelay(20); CMD(0x3d); /* turn the power on */
|
|
udelay(500);
|
|
w0(pi->saved_r0);
|
|
|
|
friq_connect(pi);
|
|
for (j=0;j<2;j++) {
|
|
friq_write_regr(pi,0,6,0xa0+j*0x10);
|
|
for (k=0;k<256;k++) {
|
|
friq_write_regr(pi,0,2,k^0xaa);
|
|
friq_write_regr(pi,0,3,k^0x55);
|
|
if (friq_read_regr(pi,0,2) != (k^0xaa)) e[j]++;
|
|
}
|
|
}
|
|
friq_disconnect(pi);
|
|
|
|
friq_connect(pi);
|
|
friq_read_block_int(pi,scratch,512,0x10);
|
|
r = 0;
|
|
for (k=0;k<128;k++) if (scratch[k] != k) r++;
|
|
friq_disconnect(pi);
|
|
|
|
if (verbose) {
|
|
printk("%s: friq: port 0x%x, mode %d, test=(%d,%d,%d)\n",
|
|
pi->device,pi->port,pi->mode,e[0],e[1],r);
|
|
}
|
|
|
|
return (r || (e[0] && e[1]));
|
|
}
|
|
|
|
|
|
static void friq_log_adapter( PIA *pi, char * scratch, int verbose )
|
|
|
|
{ char *mode_string[6] = {"4-bit","8-bit",
|
|
"EPP-8","EPP-16","EPP-32"};
|
|
|
|
printk("%s: friq %s, Freecom IQ ASIC-2 adapter at 0x%x, ", pi->device,
|
|
FRIQ_VERSION,pi->port);
|
|
printk("mode %d (%s), delay %d\n",pi->mode,
|
|
mode_string[pi->mode],pi->delay);
|
|
|
|
pi->private = 1;
|
|
friq_connect(pi);
|
|
CMD(0x9e); /* disable sleep timer */
|
|
friq_disconnect(pi);
|
|
|
|
}
|
|
|
|
static void friq_release_proto( PIA *pi)
|
|
{
|
|
if (pi->private) { /* turn off the power */
|
|
friq_connect(pi);
|
|
CMD(0x1d); CMD(0x1e);
|
|
friq_disconnect(pi);
|
|
pi->private = 0;
|
|
}
|
|
}
|
|
|
|
static struct pi_protocol friq = {
|
|
.owner = THIS_MODULE,
|
|
.name = "friq",
|
|
.max_mode = 5,
|
|
.epp_first = 2,
|
|
.default_delay = 1,
|
|
.max_units = 1,
|
|
.write_regr = friq_write_regr,
|
|
.read_regr = friq_read_regr,
|
|
.write_block = friq_write_block,
|
|
.read_block = friq_read_block,
|
|
.connect = friq_connect,
|
|
.disconnect = friq_disconnect,
|
|
.test_proto = friq_test_proto,
|
|
.log_adapter = friq_log_adapter,
|
|
.release_proto = friq_release_proto,
|
|
};
|
|
|
|
static int __init friq_init(void)
|
|
{
|
|
return paride_register(&friq);
|
|
}
|
|
|
|
static void __exit friq_exit(void)
|
|
{
|
|
paride_unregister(&friq);
|
|
}
|
|
|
|
MODULE_LICENSE("GPL");
|
|
module_init(friq_init)
|
|
module_exit(friq_exit)
|