1/*
2 * drivers/pcmcia/sa1100_simpad.c
3 *
4 * PCMCIA implementation routines for simpad
5 *
6 */
7#include <linux/module.h>
8#include <linux/kernel.h>
9#include <linux/device.h>
10#include <linux/init.h>
11
12#include <mach/hardware.h>
13#include <asm/mach-types.h>
14#include <asm/irq.h>
15#include <mach/simpad.h>
16#include "sa1100_generic.h"
17
18static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
19{
20
21	simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
22
23	skt->stat[SOC_STAT_CD].gpio = GPIO_CF_CD;
24	skt->stat[SOC_STAT_CD].name = "CF_CD";
25	skt->stat[SOC_STAT_RDY].gpio = GPIO_CF_IRQ;
26	skt->stat[SOC_STAT_RDY].name = "CF_RDY";
27
28	return 0;
29}
30
31static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
32{
33	/* Disable CF bus: */
34	/*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/
35	simpad_clear_cs3_bit(PCMCIA_RESET);
36}
37
38static void
39simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
40			   struct pcmcia_state *state)
41{
42	long cs3reg = simpad_get_cs3_ro();
43
44	/* the detect signal is inverted - fix that up here */
45	state->detect = !state->detect;
46
47	state->bvd1 = 1; /* Might be cs3reg & PCMCIA_BVD1 */
48	state->bvd2 = 1; /* Might be cs3reg & PCMCIA_BVD2 */
49
50	if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) ==
51			(PCMCIA_VS1|PCMCIA_VS2)) {
52		state->vs_3v=0;
53		state->vs_Xv=0;
54	} else {
55		state->vs_3v=1;
56		state->vs_Xv=0;
57	}
58}
59
60static int
61simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
62			       const socket_state_t *state)
63{
64	unsigned long flags;
65
66	local_irq_save(flags);
67
68	/* Murphy: see table of MIC2562a-1 */
69	switch (state->Vcc) {
70	case 0:
71		simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
72		break;
73
74	case 33:
75		simpad_clear_cs3_bit(VCC_3V_EN|EN1);
76		simpad_set_cs3_bit(VCC_5V_EN|EN0);
77		break;
78
79	case 50:
80		simpad_clear_cs3_bit(VCC_5V_EN|EN1);
81		simpad_set_cs3_bit(VCC_3V_EN|EN0);
82		break;
83
84	default:
85		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
86			__func__, state->Vcc);
87		simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
88		local_irq_restore(flags);
89		return -1;
90	}
91
92
93	local_irq_restore(flags);
94
95	return 0;
96}
97
98static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
99{
100	simpad_set_cs3_bit(PCMCIA_RESET);
101}
102
103static struct pcmcia_low_level simpad_pcmcia_ops = {
104	.owner			= THIS_MODULE,
105	.hw_init		= simpad_pcmcia_hw_init,
106	.hw_shutdown		= simpad_pcmcia_hw_shutdown,
107	.socket_state		= simpad_pcmcia_socket_state,
108	.configure_socket	= simpad_pcmcia_configure_socket,
109	.socket_suspend		= simpad_pcmcia_socket_suspend,
110};
111
112int pcmcia_simpad_init(struct device *dev)
113{
114	int ret = -ENODEV;
115
116	if (machine_is_simpad())
117		ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
118
119	return ret;
120}
121