blob: 465c3be77b995af6380401eb64e06c80a5644b33 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/io.h>
#include "cpld.h"
/* CPLD definitions */
#define CPLD_PCB_VERSION_PORT 0x283
#define CPLD_PCB_VERSION_MASK 0xF0
#define CPLD_PCB_VERSION_BIT 4
#define CPLD_RESET_PORT 0x287
#define CPLD_CMD_RESET_DSI_BRIDGE_ACTIVE 0x20
#define CPLD_CMD_RESET_DSI_BRIDGE_INACTIVE 0x00
/* Reset DSI bridge */
void cpld_reset_bridge(void)
{
outb(CPLD_CMD_RESET_DSI_BRIDGE_ACTIVE, CPLD_RESET_PORT);
outb(CPLD_CMD_RESET_DSI_BRIDGE_INACTIVE, CPLD_RESET_PORT);
}
/* Read PCB version */
unsigned int cpld_read_pcb_version(void)
{
return ((inb(CPLD_PCB_VERSION_PORT) & CPLD_PCB_VERSION_MASK) >> CPLD_PCB_VERSION_BIT);
}
|
