mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-16 07:24:39 +08:00
CRIS: Remove obsolete pinmux.c, now machine dependent.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
This commit is contained in:
Jesper Nilsson
parent
ab43d14dab
commit
c9cbf097b7
@ -1,229 +0,0 @@
|
||||
/*
|
||||
* Allocator for I/O pins. All pins are allocated to GPIO at bootup.
|
||||
* Unassigned pins and GPIO pins can be allocated to a fixed interface
|
||||
* or the I/O processor instead.
|
||||
*
|
||||
* Copyright (c) 2004 Axis Communications AB.
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <arch/hwregs/reg_map.h>
|
||||
#include <arch/hwregs/reg_rdwr.h>
|
||||
#include <arch/pinmux.h>
|
||||
#include <arch/hwregs/pinmux_defs.h>
|
||||
|
||||
#undef DEBUG
|
||||
|
||||
#define PORT_PINS 18
|
||||
#define PORTS 4
|
||||
|
||||
static char pins[PORTS][PORT_PINS];
|
||||
static DEFINE_SPINLOCK(pinmux_lock);
|
||||
|
||||
static void crisv32_pinmux_set(int port);
|
||||
|
||||
int
|
||||
crisv32_pinmux_init(void)
|
||||
{
|
||||
static int initialized = 0;
|
||||
|
||||
if (!initialized) {
|
||||
reg_pinmux_rw_pa pa = REG_RD(pinmux, regi_pinmux, rw_pa);
|
||||
initialized = 1;
|
||||
pa.pa0 = pa.pa1 = pa.pa2 = pa.pa3 =
|
||||
pa.pa4 = pa.pa5 = pa.pa6 = pa.pa7 = regk_pinmux_yes;
|
||||
REG_WR(pinmux, regi_pinmux, rw_pa, pa);
|
||||
crisv32_pinmux_alloc(PORT_B, 0, PORT_PINS - 1, pinmux_gpio);
|
||||
crisv32_pinmux_alloc(PORT_C, 0, PORT_PINS - 1, pinmux_gpio);
|
||||
crisv32_pinmux_alloc(PORT_D, 0, PORT_PINS - 1, pinmux_gpio);
|
||||
crisv32_pinmux_alloc(PORT_E, 0, PORT_PINS - 1, pinmux_gpio);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
crisv32_pinmux_alloc(int port, int first_pin, int last_pin, enum pin_mode mode)
|
||||
{
|
||||
int i;
|
||||
unsigned long flags;
|
||||
|
||||
crisv32_pinmux_init();
|
||||
|
||||
if (port > PORTS || port < 0)
|
||||
return -EINVAL;
|
||||
|
||||
spin_lock_irqsave(&pinmux_lock, flags);
|
||||
|
||||
for (i = first_pin; i <= last_pin; i++)
|
||||
{
|
||||
if ((pins[port][i] != pinmux_none) && (pins[port][i] != pinmux_gpio) &&
|
||||
(pins[port][i] != mode))
|
||||
{
|
||||
spin_unlock_irqrestore(&pinmux_lock, flags);
|
||||
#ifdef DEBUG
|
||||
panic("Pinmux alloc failed!\n");
|
||||
#endif
|
||||
return -EPERM;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = first_pin; i <= last_pin; i++)
|
||||
pins[port][i] = mode;
|
||||
|
||||
crisv32_pinmux_set(port);
|
||||
|
||||
spin_unlock_irqrestore(&pinmux_lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
crisv32_pinmux_alloc_fixed(enum fixed_function function)
|
||||
{
|
||||
int ret = -EINVAL;
|
||||
char saved[sizeof pins];
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&pinmux_lock, flags);
|
||||
|
||||
/* Save internal data for recovery */
|
||||
memcpy(saved, pins, sizeof pins);
|
||||
|
||||
reg_pinmux_rw_hwprot hwprot = REG_RD(pinmux, regi_pinmux, rw_hwprot);
|
||||
|
||||
switch(function)
|
||||
{
|
||||
case pinmux_ser1:
|
||||
ret = crisv32_pinmux_alloc(PORT_C, 4, 7, pinmux_fixed);
|
||||
hwprot.ser1 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_ser2:
|
||||
ret = crisv32_pinmux_alloc(PORT_C, 8, 11, pinmux_fixed);
|
||||
hwprot.ser2 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_ser3:
|
||||
ret = crisv32_pinmux_alloc(PORT_C, 12, 15, pinmux_fixed);
|
||||
hwprot.ser3 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_sser0:
|
||||
ret = crisv32_pinmux_alloc(PORT_C, 0, 3, pinmux_fixed);
|
||||
ret |= crisv32_pinmux_alloc(PORT_C, 16, 16, pinmux_fixed);
|
||||
hwprot.sser0 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_sser1:
|
||||
ret = crisv32_pinmux_alloc(PORT_D, 0, 4, pinmux_fixed);
|
||||
hwprot.sser1 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_ata0:
|
||||
ret = crisv32_pinmux_alloc(PORT_D, 5, 7, pinmux_fixed);
|
||||
ret |= crisv32_pinmux_alloc(PORT_D, 15, 17, pinmux_fixed);
|
||||
hwprot.ata0 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_ata1:
|
||||
ret = crisv32_pinmux_alloc(PORT_D, 0, 4, pinmux_fixed);
|
||||
ret |= crisv32_pinmux_alloc(PORT_E, 17, 17, pinmux_fixed);
|
||||
hwprot.ata1 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_ata2:
|
||||
ret = crisv32_pinmux_alloc(PORT_C, 11, 15, pinmux_fixed);
|
||||
ret |= crisv32_pinmux_alloc(PORT_E, 3, 3, pinmux_fixed);
|
||||
hwprot.ata2 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_ata3:
|
||||
ret = crisv32_pinmux_alloc(PORT_C, 8, 10, pinmux_fixed);
|
||||
ret |= crisv32_pinmux_alloc(PORT_C, 0, 2, pinmux_fixed);
|
||||
hwprot.ata2 = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_ata:
|
||||
ret = crisv32_pinmux_alloc(PORT_B, 0, 15, pinmux_fixed);
|
||||
ret |= crisv32_pinmux_alloc(PORT_D, 8, 15, pinmux_fixed);
|
||||
hwprot.ata = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_eth1:
|
||||
ret = crisv32_pinmux_alloc(PORT_E, 0, 17, pinmux_fixed);
|
||||
hwprot.eth1 = regk_pinmux_yes;
|
||||
hwprot.eth1_mgm = regk_pinmux_yes;
|
||||
break;
|
||||
case pinmux_timer:
|
||||
ret = crisv32_pinmux_alloc(PORT_C, 16, 16, pinmux_fixed);
|
||||
hwprot.timer = regk_pinmux_yes;
|
||||
spin_unlock_irqrestore(&pinmux_lock, flags);
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (!ret)
|
||||
REG_WR(pinmux, regi_pinmux, rw_hwprot, hwprot);
|
||||
else
|
||||
memcpy(pins, saved, sizeof pins);
|
||||
|
||||
spin_unlock_irqrestore(&pinmux_lock, flags);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void
|
||||
crisv32_pinmux_set(int port)
|
||||
{
|
||||
int i;
|
||||
int gpio_val = 0;
|
||||
int iop_val = 0;
|
||||
|
||||
for (i = 0; i < PORT_PINS; i++)
|
||||
{
|
||||
if (pins[port][i] == pinmux_gpio)
|
||||
gpio_val |= (1 << i);
|
||||
else if (pins[port][i] == pinmux_iop)
|
||||
iop_val |= (1 << i);
|
||||
}
|
||||
|
||||
REG_WRITE(int, regi_pinmux + REG_RD_ADDR_pinmux_rw_pb_gio + 8*port, gpio_val);
|
||||
REG_WRITE(int, regi_pinmux + REG_RD_ADDR_pinmux_rw_pb_iop + 8*port, iop_val);
|
||||
|
||||
#ifdef DEBUG
|
||||
crisv32_pinmux_dump();
|
||||
#endif
|
||||
}
|
||||
|
||||
int
|
||||
crisv32_pinmux_dealloc(int port, int first_pin, int last_pin)
|
||||
{
|
||||
int i;
|
||||
unsigned long flags;
|
||||
|
||||
crisv32_pinmux_init();
|
||||
|
||||
if (port > PORTS || port < 0)
|
||||
return -EINVAL;
|
||||
|
||||
spin_lock_irqsave(&pinmux_lock, flags);
|
||||
|
||||
for (i = first_pin; i <= last_pin; i++)
|
||||
pins[port][i] = pinmux_none;
|
||||
|
||||
crisv32_pinmux_set(port);
|
||||
spin_unlock_irqrestore(&pinmux_lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
crisv32_pinmux_dump(void)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
crisv32_pinmux_init();
|
||||
|
||||
for (i = 0; i < PORTS; i++)
|
||||
{
|
||||
printk("Port %c\n", 'B'+i);
|
||||
for (j = 0; j < PORT_PINS; j++)
|
||||
printk(" Pin %d = %d\n", j, pins[i][j]);
|
||||
}
|
||||
}
|
||||
|
||||
__initcall(crisv32_pinmux_init);
|
||||
Loading…
Reference in New Issue
Block a user