#define j44(a,b) (((a>>4)&0x0f)+(b&0xf0))
#define j53(a,b) (((a>>3)&0x1f)+((b<<4)&0xe0))
+static int epatc8;
+
+module_param(epatc8, int, 0);
+MODULE_PARM_DESC(epatc8, "support for the Shuttle EP1284 chip, "
+ "used in any recent Imation SuperDisk (LS-120) drive.");
+
/* cont = 0 IDE register file
cont = 1 IDE control registers
cont = 2 internal EPAT registers
{ pi->saved_r0 = r0();
pi->saved_r2 = r2();
-#ifdef CONFIG_PARIDE_EPATC8
/* Initialize the chip */
- CPP(0);CPP(0x40);CPP(0xe0);
- w0(0);w2(1);w2(4);
- WR(0x8,0x12);WR(0xc,0x14);WR(0x12,0x10);
- WR(0xe,0xf);WR(0xf,4);
- /* WR(0xe,0xa);WR(0xf,4); */
- WR(0xe,0xd);WR(0xf,0);
- /* CPP(0x30); */
+ CPP(0);
+
+ if (epatc8) {
+ CPP(0x40);CPP(0xe0);
+ w0(0);w2(1);w2(4);
+ WR(0x8,0x12);WR(0xc,0x14);WR(0x12,0x10);
+ WR(0xe,0xf);WR(0xf,4);
+ /* WR(0xe,0xa);WR(0xf,4); */
+ WR(0xe,0xd);WR(0xf,0);
+ /* CPP(0x30); */
+ }
/* Connect to the chip */
CPP(0xe0);
/* Request EPP */
w0(0x40);w2(6);w2(7);w2(4);w2(0xc);w2(4);
}
-#else
- CPP(0); CPP(0xe0);
- w0(0); w2(1); w2(4);
- if (pi->mode >= 3) {
- w0(0); w2(1); w2(4); w2(0xc);
- w0(0x40); w2(6); w2(7); w2(4); w2(0xc); w2(4);
+
+ if (!epatc8) {
+ WR(8,0x10); WR(0xc,0x14); WR(0xa,0x38); WR(0x12,0x10);
}
- WR(8,0x10); WR(0xc,0x14); WR(0xa,0x38); WR(0x12,0x10);
-#endif
}
static void epat_disconnect (PIA *pi)
static int __init epat_init(void)
{
+#ifdef CONFIG_PARIDE_EPATC8
+ epatc8 = 1;
+#endif
return pi_register(&epat)-1;
}