1 /*
2 * drivers/pcmcia/sa1100_jornada720.c
3 *
4 * Jornada720 PCMCIA specific routines
5 *
6 */
7 #include <linux/module.h>
8 #include <linux/kernel.h>
9 #include <linux/device.h>
10 #include <linux/errno.h>
11 #include <linux/init.h>
12 #include <linux/io.h>
13
14 #include <mach/hardware.h>
15 #include <asm/hardware/sa1111.h>
16 #include <asm/mach-types.h>
17
18 #include "sa1111_generic.h"
19
20 /* Does SOCKET1_3V actually do anything? */
21 #define SOCKET0_POWER GPIO_GPIO0
22 #define SOCKET0_3V GPIO_GPIO2
23 #define SOCKET1_POWER (GPIO_GPIO1 | GPIO_GPIO3)
24 #define SOCKET1_3V GPIO_GPIO3
25
26 static int
jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)27 jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
28 {
29 struct sa1111_pcmcia_socket *s = to_skt(skt);
30 unsigned int pa_dwr_mask, pa_dwr_set;
31 int ret;
32
33 printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
34 skt->nr, state->Vcc, state->Vpp);
35
36 switch (skt->nr) {
37 case 0:
38 pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
39
40 switch (state->Vcc) {
41 default:
42 case 0:
43 pa_dwr_set = 0;
44 break;
45 case 33:
46 pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
47 break;
48 case 50:
49 pa_dwr_set = SOCKET0_POWER;
50 break;
51 }
52 break;
53
54 case 1:
55 pa_dwr_mask = SOCKET1_POWER;
56
57 switch (state->Vcc) {
58 default:
59 case 0:
60 pa_dwr_set = 0;
61 break;
62 case 33:
63 pa_dwr_set = SOCKET1_POWER;
64 break;
65 case 50:
66 pa_dwr_set = SOCKET1_POWER;
67 break;
68 }
69 break;
70
71 default:
72 return -1;
73 }
74
75 if (state->Vpp != state->Vcc && state->Vpp != 0) {
76 printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
77 __func__, state->Vpp);
78 return -EPERM;
79 }
80
81 ret = sa1111_pcmcia_configure_socket(skt, state);
82 if (ret == 0)
83 sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
84
85 return ret;
86 }
87
88 static struct pcmcia_low_level jornada720_pcmcia_ops = {
89 .owner = THIS_MODULE,
90 .configure_socket = jornada720_pcmcia_configure_socket,
91 .first = 0,
92 .nr = 2,
93 };
94
pcmcia_jornada720_init(struct sa1111_dev * sadev)95 int pcmcia_jornada720_init(struct sa1111_dev *sadev)
96 {
97 int ret = -ENODEV;
98
99 if (machine_is_jornada720()) {
100 unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
101
102 GRER |= 0x00000002;
103
104 /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
105 sa1111_set_io_dir(sadev, pin, 0, 0);
106 sa1111_set_io(sadev, pin, 0);
107 sa1111_set_sleep_io(sadev, pin, 0);
108
109 sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
110 ret = sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
111 sa11xx_drv_pcmcia_add_one);
112 }
113
114 return ret;
115 }
116