Release 4.11 drivers/block/paride/friq.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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 70 | 100.00% | 1 | 100.00% |
| Total | 70 | 100.00% | 1 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 61 | 100.00% | 1 | 100.00% |
| Total | 61 | 100.00% | 1 | 100.00% |
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;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 416 | 100.00% | 1 | 100.00% |
| Total | 416 | 100.00% | 1 | 100.00% |
static void friq_read_block( PIA *pi, char * buf, int count)
{ friq_read_block_int(pi,buf,count,0x08);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 28 | 100.00% | 1 | 100.00% |
| Total | 28 | 100.00% | 1 | 100.00% |
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;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 219 | 100.00% | 1 | 100.00% |
| Total | 219 | 100.00% | 1 | 100.00% |
static void friq_connect ( PIA *pi )
{ pi->saved_r0 = r0();
pi->saved_r2 = r2();
w2(4);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
static void friq_disconnect ( PIA *pi )
{ CMD(0x20);
w0(pi->saved_r0);
w2(pi->saved_r2);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
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]));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 277 | 100.00% | 1 | 100.00% |
| Total | 277 | 100.00% | 1 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 93 | 100.00% | 1 | 100.00% |
| Total | 93 | 100.00% | 1 | 100.00% |
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;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 45 | 100.00% | 1 | 100.00% |
| Total | 45 | 100.00% | 1 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 12 | 75.00% | 1 | 33.33% |
| Al Viro | 3 | 18.75% | 1 | 33.33% |
| Alexey Dobriyan | 1 | 6.25% | 1 | 33.33% |
| Total | 16 | 100.00% | 3 | 100.00% |
static void __exit friq_exit(void)
{
paride_unregister(&friq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 11 | 73.33% | 1 | 33.33% |
| Al Viro | 3 | 20.00% | 1 | 33.33% |
| Alexey Dobriyan | 1 | 6.67% | 1 | 33.33% |
| Total | 15 | 100.00% | 3 | 100.00% |
MODULE_LICENSE("GPL");
module_init(friq_init)
module_exit(friq_exit)
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 1379 | 94.91% | 2 | 28.57% |
| Al Viro | 66 | 4.54% | 2 | 28.57% |
| Linus Torvalds | 6 | 0.41% | 2 | 28.57% |
| Alexey Dobriyan | 2 | 0.14% | 1 | 14.29% |
| Total | 1453 | 100.00% | 7 | 100.00% |
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