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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/device.h>
10#include <linux/init.h>
11
Russell Kinga09e64f2008-08-05 16:14:15 +010012#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <asm/mach-types.h>
14#include <asm/irq.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010015#include <mach/simpad.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include "sa1100_generic.h"
17
Linus Torvalds1da177e2005-04-16 15:20:36 -070018static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
19{
20
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010021 simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
Linus Torvalds1da177e2005-04-16 15:20:36 -070022
Russell Kingb1d8a5f2012-01-13 23:06:48 +000023 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";
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Russell Kingb1d8a5f2012-01-13 23:06:48 +000028 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070029}
30
31static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
32{
Linus Torvalds1da177e2005-04-16 15:20:36 -070033 /* Disable CF bus: */
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010034 /*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/
35 simpad_clear_cs3_bit(PCMCIA_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -070036}
37
38static void
39simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
40 struct pcmcia_state *state)
41{
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010042 long cs3reg = simpad_get_cs3_ro();
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
Russell Kingb1d8a5f2012-01-13 23:06:48 +000044 /* the detect signal is inverted - fix that up here */
45 state->detect = !state->detect;
46
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010047 state->bvd1 = 1; /* Might be cs3reg & PCMCIA_BVD1 */
48 state->bvd2 = 1; /* Might be cs3reg & PCMCIA_BVD2 */
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010049
50 if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) ==
51 (PCMCIA_VS1|PCMCIA_VS2)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 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:
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010071 simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 break;
73
74 case 33:
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010075 simpad_clear_cs3_bit(VCC_3V_EN|EN1);
76 simpad_set_cs3_bit(VCC_5V_EN|EN0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 break;
78
79 case 50:
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010080 simpad_clear_cs3_bit(VCC_5V_EN|EN1);
81 simpad_set_cs3_bit(VCC_3V_EN|EN0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 break;
83
84 default:
85 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
Harvey Harrison2e11cb42008-05-01 04:34:54 -070086 __func__, state->Vcc);
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +010087 simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 local_irq_restore(flags);
89 return -1;
90 }
91
92
93 local_irq_restore(flags);
94
95 return 0;
96}
97
Linus Torvalds1da177e2005-04-16 15:20:36 -070098static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
99{
Jochen Friedrichde0bc0d2011-08-18 21:50:31 +0100100 simpad_set_cs3_bit(PCMCIA_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101}
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,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 .socket_suspend = simpad_pcmcia_socket_suspend,
110};
111
Uwe Kleine-König5b85e042010-11-04 10:46:14 +0100112int __devinit pcmcia_simpad_init(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113{
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}