1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/ioport.h>
7 static unsigned pc873xx_probelist[] = {0x398, 0x26e, 0};
9 static char *pc873xx_names[] = {
10 "PC87303", "PC87306", "PC87312", "PC87332", "PC87334"
13 static unsigned int base, model;
16 unsigned int __init pc873xx_get_base(void)
21 char *__init pc873xx_get_model(void)
23 return pc873xx_names[model];
26 static unsigned char __init pc873xx_read(unsigned int base, int reg)
32 static void __init pc873xx_write(unsigned int base, int reg, unsigned char data)
36 local_irq_save(flags);
39 outb(data, base + 1); /* Must be written twice */
40 local_irq_restore(flags);
43 int __init pc873xx_probe(void)
47 while ((base = pc873xx_probelist[index++])) {
49 if (request_region(base, 2, "Super IO PC873xx") == NULL)
52 val = pc873xx_read(base, REG_SID);
53 if ((val & 0xf0) == 0x10) {
56 } else if ((val & 0xf8) == 0x70) {
59 } else if ((val & 0xf8) == 0x50) {
62 } else if ((val & 0xf8) == 0x40) {
67 release_region(base, 2);
70 return (base == 0) ? -1 : 1;
73 void __init pc873xx_enable_epp19(void)
77 printk(KERN_INFO "PC873xx enabling EPP v1.9\n");
78 data = pc873xx_read(base, REG_PCR);
79 pc873xx_write(base, REG_PCR, (data & 0xFC) | 0x02);
82 void __init pc873xx_enable_ide(void)
86 printk(KERN_INFO "PC873xx enabling IDE interrupt\n");
87 data = pc873xx_read(base, REG_FER);
88 pc873xx_write(base, REG_FER, data | 0x40);