blob: 56ab739156026d00774a0a68e9e6852671995430 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/device.h>
10#include <linux/init.h>
Russell King31696632012-06-06 11:42:36 +010011#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012
Russell Kinga09e64f2008-08-05 16:14:15 +010013#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <asm/mach-types.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010015#include <mach/shannon.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <asm/irq.h>
17#include "sa1100_generic.h"
18
Linus Torvalds1da177e2005-04-16 15:20:36 -070019static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
20{
21 /* All those are inputs */
Russell King3b614362012-01-13 23:06:09 +000022 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));
Linus Torvalds1da177e2005-04-16 15:20:36 -070026
Russell King3b614362012-01-13 23:06:09 +000027 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Russell King3b614362012-01-13 23:06:09 +000039 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070040}
41
42static void
43shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
44 struct pcmcia_state *state)
45{
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 switch (skt->nr) {
47 case 0:
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 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:
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 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 */
Harvey Harrison2e11cb42008-05-01 04:34:54 -070069 printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 break;
71 case 50:
Harvey Harrison2e11cb42008-05-01 04:34:54 -070072 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 case 33:
74 break;
75 default:
76 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
Harvey Harrison2e11cb42008-05-01 04:34:54 -070077 __func__, state->Vcc);
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 return -1;
79 }
80
Harvey Harrison2e11cb42008-05-01 04:34:54 -070081 printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83 /* Silently ignore Vpp, output enable, speaker enable. */
84
85 return 0;
86}
87
Linus Torvalds1da177e2005-04-16 15:20:36 -070088static struct pcmcia_low_level shannon_pcmcia_ops = {
89 .owner = THIS_MODULE,
90 .hw_init = shannon_pcmcia_hw_init,
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 .socket_state = shannon_pcmcia_socket_state,
92 .configure_socket = shannon_pcmcia_configure_socket,
Linus Torvalds1da177e2005-04-16 15:20:36 -070093};
94
Uwe Kleine-König5b85e042010-11-04 10:46:14 +010095int __devinit pcmcia_shannon_init(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070096{
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}