mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 00:30:53 +07:00
a09e64fbc0
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
/*
|
|
* linux/drivers/pcmcia/sa1100_neponset.c
|
|
*
|
|
* Neponset PCMCIA specific routines
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/device.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <asm/mach-types.h>
|
|
#include <mach/neponset.h>
|
|
#include <asm/hardware/sa1111.h>
|
|
|
|
#include "sa1111_generic.h"
|
|
|
|
/*
|
|
* Neponset uses the Maxim MAX1600, with the following connections:
|
|
*
|
|
* MAX1600 Neponset
|
|
*
|
|
* A0VCC SA-1111 GPIO A<1>
|
|
* A1VCC SA-1111 GPIO A<0>
|
|
* A0VPP CPLD NCR A0VPP
|
|
* A1VPP CPLD NCR A1VPP
|
|
* B0VCC SA-1111 GPIO A<2>
|
|
* B1VCC SA-1111 GPIO A<3>
|
|
* B0VPP ground (slot B is CF)
|
|
* B1VPP ground (slot B is CF)
|
|
*
|
|
* VX VCC (5V)
|
|
* VY VCC3_3 (3.3V)
|
|
* 12INA 12V
|
|
* 12INB ground (slot B is CF)
|
|
*
|
|
* The MAX1600 CODE pin is tied to ground, placing the device in
|
|
* "Standard Intel code" mode. Refer to the Maxim data sheet for
|
|
* the corresponding truth table.
|
|
*/
|
|
|
|
static int
|
|
neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
|
|
{
|
|
unsigned int ncr_mask, ncr_set, pa_dwr_mask, pa_dwr_set;
|
|
int ret;
|
|
|
|
switch (skt->nr) {
|
|
case 0:
|
|
pa_dwr_mask = GPIO_A0 | GPIO_A1;
|
|
ncr_mask = NCR_A0VPP | NCR_A1VPP;
|
|
|
|
if (state->Vpp == 0)
|
|
ncr_set = 0;
|
|
else if (state->Vpp == 120)
|
|
ncr_set = NCR_A1VPP;
|
|
else if (state->Vpp == state->Vcc)
|
|
ncr_set = NCR_A0VPP;
|
|
else {
|
|
printk(KERN_ERR "%s(): unrecognized VPP %u\n",
|
|
__func__, state->Vpp);
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case 1:
|
|
pa_dwr_mask = GPIO_A2 | GPIO_A3;
|
|
ncr_mask = 0;
|
|
ncr_set = 0;
|
|
|
|
if (state->Vpp != state->Vcc && state->Vpp != 0) {
|
|
printk(KERN_ERR "%s(): CF slot cannot support VPP %u\n",
|
|
__func__, state->Vpp);
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* pa_dwr_set is the mask for selecting Vcc on both sockets.
|
|
* pa_dwr_mask selects which bits (and therefore socket) we change.
|
|
*/
|
|
switch (state->Vcc) {
|
|
default:
|
|
case 0: pa_dwr_set = 0; break;
|
|
case 33: pa_dwr_set = GPIO_A1|GPIO_A2; break;
|
|
case 50: pa_dwr_set = GPIO_A0|GPIO_A3; break;
|
|
}
|
|
|
|
ret = sa1111_pcmcia_configure_socket(skt, state);
|
|
if (ret == 0) {
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
NCR_0 = (NCR_0 & ~ncr_mask) | ncr_set;
|
|
|
|
local_irq_restore(flags);
|
|
sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void neponset_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
if (skt->nr == 0)
|
|
NCR_0 &= ~(NCR_A0VPP | NCR_A1VPP);
|
|
|
|
sa1111_pcmcia_socket_init(skt);
|
|
}
|
|
|
|
static struct pcmcia_low_level neponset_pcmcia_ops = {
|
|
.owner = THIS_MODULE,
|
|
.hw_init = sa1111_pcmcia_hw_init,
|
|
.hw_shutdown = sa1111_pcmcia_hw_shutdown,
|
|
.socket_state = sa1111_pcmcia_socket_state,
|
|
.configure_socket = neponset_pcmcia_configure_socket,
|
|
.socket_init = neponset_pcmcia_socket_init,
|
|
.socket_suspend = sa1111_pcmcia_socket_suspend,
|
|
};
|
|
|
|
int __init pcmcia_neponset_init(struct sa1111_dev *sadev)
|
|
{
|
|
int ret = -ENODEV;
|
|
|
|
if (machine_is_assabet()) {
|
|
/*
|
|
* Set GPIO_A<3:0> to be outputs for the MAX1600,
|
|
* and switch to standby mode.
|
|
*/
|
|
sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
|
|
sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
|
|
sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
|
|
ret = sa11xx_drv_pcmcia_probe(&sadev->dev, &neponset_pcmcia_ops, 0, 2);
|
|
}
|
|
|
|
return ret;
|
|
}
|