1 /*
2 * linux/drivers/pcmcia/sa1100_neponset.c
3 *
4 * Neponset PCMCIA specific routines
5 */
6 #include <linux/kernel.h>
7 #include <linux/sched.h>
8
9 #include <asm/hardware.h>
10 #include <asm/arch/assabet.h>
11 #include <asm/hardware/sa1111.h>
12
13 #include "sa1100_generic.h"
14 #include "sa1111_generic.h"
15
neponset_pcmcia_init(struct pcmcia_init * init)16 static int neponset_pcmcia_init(struct pcmcia_init *init)
17 {
18 /* Set GPIO_A<3:0> to be outputs for PCMCIA/CF power controller: */
19 PA_DDR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3);
20
21 /* MAX1600 to standby mode: */
22 PA_DWR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3);
23 NCR_0 &= ~(NCR_A0VPP | NCR_A1VPP);
24
25 return sa1111_pcmcia_init(init);
26 }
27
28 static int
neponset_pcmcia_configure_socket(const struct pcmcia_configure * conf)29 neponset_pcmcia_configure_socket(const struct pcmcia_configure *conf)
30 {
31 unsigned int ncr_mask, pa_dwr_mask;
32 unsigned int ncr_set, pa_dwr_set;
33 int ret;
34
35 /* Neponset uses the Maxim MAX1600, with the following connections:
36
37 * MAX1600 Neponset
38 *
39 * A0VCC SA-1111 GPIO A<1>
40 * A1VCC SA-1111 GPIO A<0>
41 * A0VPP CPLD NCR A0VPP
42 * A1VPP CPLD NCR A1VPP
43 * B0VCC SA-1111 GPIO A<2>
44 * B1VCC SA-1111 GPIO A<3>
45 * B0VPP ground (slot B is CF)
46 * B1VPP ground (slot B is CF)
47 *
48 * VX VCC (5V)
49 * VY VCC3_3 (3.3V)
50 * 12INA 12V
51 * 12INB ground (slot B is CF)
52 *
53 * The MAX1600 CODE pin is tied to ground, placing the device in
54 * "Standard Intel code" mode. Refer to the Maxim data sheet for
55 * the corresponding truth table.
56 */
57
58 switch (conf->sock) {
59 case 0:
60 pa_dwr_mask = GPIO_GPIO0 | GPIO_GPIO1;
61 ncr_mask = NCR_A0VPP | NCR_A1VPP;
62
63 switch (conf->vcc) {
64 default:
65 case 0: pa_dwr_set = 0; break;
66 case 33: pa_dwr_set = GPIO_GPIO1; break;
67 case 50: pa_dwr_set = GPIO_GPIO0; break;
68 }
69
70 switch (conf->vpp) {
71 case 0: ncr_set = 0; break;
72 case 120: ncr_set = NCR_A1VPP; break;
73 default:
74 if (conf->vpp == conf->vcc)
75 ncr_set = NCR_A0VPP;
76 else {
77 printk(KERN_ERR "%s(): unrecognized VPP %u\n",
78 __FUNCTION__, conf->vpp);
79 return -1;
80 }
81 }
82 break;
83
84 case 1:
85 pa_dwr_mask = GPIO_GPIO2 | GPIO_GPIO3;
86 ncr_mask = 0;
87 ncr_set = 0;
88
89 switch (conf->vcc) {
90 default:
91 case 0: pa_dwr_set = 0; break;
92 case 33: pa_dwr_set = GPIO_GPIO2; break;
93 case 50: pa_dwr_set = GPIO_GPIO3; break;
94 }
95
96 if (conf->vpp != conf->vcc && conf->vpp != 0) {
97 printk(KERN_ERR "%s(): CF slot cannot support VPP %u\n",
98 __FUNCTION__, conf->vpp);
99 return -1;
100 }
101 break;
102
103 default:
104 return -1;
105 }
106
107 ret = sa1111_pcmcia_configure_socket(conf);
108 if (ret == 0) {
109 unsigned long flags;
110
111 local_irq_save(flags);
112 NCR_0 = (NCR_0 & ~ncr_mask) | ncr_set;
113 PA_DWR = (PA_DWR & ~pa_dwr_mask) | pa_dwr_set;
114 local_irq_restore(flags);
115 }
116
117 return 0;
118 }
119
120 struct pcmcia_low_level neponset_pcmcia_ops = {
121 init: neponset_pcmcia_init,
122 shutdown: sa1111_pcmcia_shutdown,
123 socket_state: sa1111_pcmcia_socket_state,
124 get_irq_info: sa1111_pcmcia_get_irq_info,
125 configure_socket: neponset_pcmcia_configure_socket,
126
127 socket_init: sa1111_pcmcia_socket_init,
128 socket_suspend: sa1111_pcmcia_socket_suspend,
129 };
130