82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/drivers/pcmcia/sa1100_neponset.c
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*
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* Neponset PCMCIA specific routines
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <asm/mach-types.h>
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#include "sa1111_generic.h"
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#include "max1600.h"
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/*
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* Neponset uses the Maxim MAX1600, with the following connections:
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*
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* MAX1600 Neponset
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*
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* A0VCC SA-1111 GPIO A<1>
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* A1VCC SA-1111 GPIO A<0>
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* A0VPP CPLD NCR A0VPP
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* A1VPP CPLD NCR A1VPP
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* B0VCC SA-1111 GPIO A<2>
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* B1VCC SA-1111 GPIO A<3>
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* B0VPP ground (slot B is CF)
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* B1VPP ground (slot B is CF)
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*
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* VX VCC (5V)
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* VY VCC3_3 (3.3V)
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* 12INA 12V
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* 12INB ground (slot B is CF)
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*
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* The MAX1600 CODE pin is tied to ground, placing the device in
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* "Standard Intel code" mode. Refer to the Maxim data sheet for
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* the corresponding truth table.
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*/
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static int neponset_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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{
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struct max1600 *m;
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int ret;
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ret = max1600_init(skt->socket.dev.parent, &m,
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skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A,
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MAX1600_CODE_LOW);
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if (ret == 0)
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skt->driver_data = m;
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return ret;
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}
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static int
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neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
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{
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struct max1600 *m = skt->driver_data;
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int ret;
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ret = sa1111_pcmcia_configure_socket(skt, state);
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if (ret == 0)
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ret = max1600_configure(m, state->Vcc, state->Vpp);
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return ret;
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}
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static struct pcmcia_low_level neponset_pcmcia_ops = {
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.owner = THIS_MODULE,
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.hw_init = neponset_pcmcia_hw_init,
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.configure_socket = neponset_pcmcia_configure_socket,
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.first = 0,
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.nr = 2,
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};
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int pcmcia_neponset_init(struct sa1111_dev *sadev)
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{
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sa11xx_drv_pcmcia_ops(&neponset_pcmcia_ops);
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return sa1111_pcmcia_add(sadev, &neponset_pcmcia_ops,
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sa11xx_drv_pcmcia_add_one);
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}
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