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