1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/drivers/pcmcia/sa1100_neponset.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Neponset PCMCIA specific routines
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #include <linux/module.h>
8*4882a593Smuzhiyun #include <linux/kernel.h>
9*4882a593Smuzhiyun #include <linux/device.h>
10*4882a593Smuzhiyun #include <linux/errno.h>
11*4882a593Smuzhiyun #include <linux/init.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <asm/mach-types.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include "sa1111_generic.h"
16*4882a593Smuzhiyun #include "max1600.h"
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun /*
19*4882a593Smuzhiyun * Neponset uses the Maxim MAX1600, with the following connections:
20*4882a593Smuzhiyun *
21*4882a593Smuzhiyun * MAX1600 Neponset
22*4882a593Smuzhiyun *
23*4882a593Smuzhiyun * A0VCC SA-1111 GPIO A<1>
24*4882a593Smuzhiyun * A1VCC SA-1111 GPIO A<0>
25*4882a593Smuzhiyun * A0VPP CPLD NCR A0VPP
26*4882a593Smuzhiyun * A1VPP CPLD NCR A1VPP
27*4882a593Smuzhiyun * B0VCC SA-1111 GPIO A<2>
28*4882a593Smuzhiyun * B1VCC SA-1111 GPIO A<3>
29*4882a593Smuzhiyun * B0VPP ground (slot B is CF)
30*4882a593Smuzhiyun * B1VPP ground (slot B is CF)
31*4882a593Smuzhiyun *
32*4882a593Smuzhiyun * VX VCC (5V)
33*4882a593Smuzhiyun * VY VCC3_3 (3.3V)
34*4882a593Smuzhiyun * 12INA 12V
35*4882a593Smuzhiyun * 12INB ground (slot B is CF)
36*4882a593Smuzhiyun *
37*4882a593Smuzhiyun * The MAX1600 CODE pin is tied to ground, placing the device in
38*4882a593Smuzhiyun * "Standard Intel code" mode. Refer to the Maxim data sheet for
39*4882a593Smuzhiyun * the corresponding truth table.
40*4882a593Smuzhiyun */
neponset_pcmcia_hw_init(struct soc_pcmcia_socket * skt)41*4882a593Smuzhiyun static int neponset_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun struct max1600 *m;
44*4882a593Smuzhiyun int ret;
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun ret = max1600_init(skt->socket.dev.parent, &m,
47*4882a593Smuzhiyun skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A,
48*4882a593Smuzhiyun MAX1600_CODE_LOW);
49*4882a593Smuzhiyun if (ret == 0)
50*4882a593Smuzhiyun skt->driver_data = m;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun return ret;
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun static int
neponset_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)56*4882a593Smuzhiyun neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun struct max1600 *m = skt->driver_data;
59*4882a593Smuzhiyun int ret;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun ret = sa1111_pcmcia_configure_socket(skt, state);
62*4882a593Smuzhiyun if (ret == 0)
63*4882a593Smuzhiyun ret = max1600_configure(m, state->Vcc, state->Vpp);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun return ret;
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun static struct pcmcia_low_level neponset_pcmcia_ops = {
69*4882a593Smuzhiyun .owner = THIS_MODULE,
70*4882a593Smuzhiyun .hw_init = neponset_pcmcia_hw_init,
71*4882a593Smuzhiyun .configure_socket = neponset_pcmcia_configure_socket,
72*4882a593Smuzhiyun .first = 0,
73*4882a593Smuzhiyun .nr = 2,
74*4882a593Smuzhiyun };
75*4882a593Smuzhiyun
pcmcia_neponset_init(struct sa1111_dev * sadev)76*4882a593Smuzhiyun int pcmcia_neponset_init(struct sa1111_dev *sadev)
77*4882a593Smuzhiyun {
78*4882a593Smuzhiyun sa11xx_drv_pcmcia_ops(&neponset_pcmcia_ops);
79*4882a593Smuzhiyun return sa1111_pcmcia_add(sadev, &neponset_pcmcia_ops,
80*4882a593Smuzhiyun sa11xx_drv_pcmcia_add_one);
81*4882a593Smuzhiyun }
82