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
19static 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
42static void
43shannon_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
63static int
64shannon_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
88static 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
95int 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