1 /*
2 * drivers/pcmcia/sa1100_shannon.c
3 *
4 * PCMCIA implementation routines for Shannon
5 *
6 */
7 #include <linux/module.h>
8 #include <linux/kernel.h>
9 #include <linux/device.h>
10 #include <linux/init.h>
11 #include <linux/io.h>
12
13 #include <mach/hardware.h>
14 #include <asm/mach-types.h>
15 #include <mach/shannon.h>
16 #include <asm/irq.h>
17 #include "sa1100_generic.h"
18
shannon_pcmcia_hw_init(struct soc_pcmcia_socket * skt)19 static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
20 {
21 /* All those are inputs */
22 GAFR &= ~(GPIO_GPIO(SHANNON_GPIO_EJECT_0) |
23 GPIO_GPIO(SHANNON_GPIO_EJECT_1) |
24 GPIO_GPIO(SHANNON_GPIO_RDY_0) |
25 GPIO_GPIO(SHANNON_GPIO_RDY_1));
26
27 if (skt->nr == 0) {
28 skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_0;
29 skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_0";
30 skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_0;
31 skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_0";
32 } else {
33 skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_1;
34 skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_1";
35 skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_1;
36 skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_1";
37 }
38
39 return 0;
40 }
41
42 static void
shannon_pcmcia_socket_state(struct soc_pcmcia_socket * skt,struct pcmcia_state * state)43 shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
44 struct pcmcia_state *state)
45 {
46 switch (skt->nr) {
47 case 0:
48 state->bvd1 = 1;
49 state->bvd2 = 1;
50 state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */
51 state->vs_Xv = 0;
52 break;
53
54 case 1:
55 state->bvd1 = 1;
56 state->bvd2 = 1;
57 state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */
58 state->vs_Xv = 0;
59 break;
60 }
61 }
62
63 static int
shannon_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)64 shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
65 const socket_state_t *state)
66 {
67 switch (state->Vcc) {
68 case 0: /* power off */
69 printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__);
70 break;
71 case 50:
72 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__);
73 case 33:
74 break;
75 default:
76 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
77 __func__, state->Vcc);
78 return -1;
79 }
80
81 printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__);
82
83 /* Silently ignore Vpp, output enable, speaker enable. */
84
85 return 0;
86 }
87
88 static struct pcmcia_low_level shannon_pcmcia_ops = {
89 .owner = THIS_MODULE,
90 .hw_init = shannon_pcmcia_hw_init,
91 .socket_state = shannon_pcmcia_socket_state,
92 .configure_socket = shannon_pcmcia_configure_socket,
93 };
94
pcmcia_shannon_init(struct device * dev)95 int pcmcia_shannon_init(struct device *dev)
96 {
97 int ret = -ENODEV;
98
99 if (machine_is_shannon())
100 ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2);
101
102 return ret;
103 }
104