blob: d9c7337b909ce3fb06b0609aa4eef81bf2cf5e28 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * drivers/pcmcia/sa1100_h3600.c
3 *
4 * PCMCIA implementation routines for H3600
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/interrupt.h>
11#include <linux/init.h>
12#include <linux/delay.h>
Dmitry Artamonow2a837092009-12-06 17:12:49 +010013#include <linux/gpio.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
Russell Kinga09e64f2008-08-05 16:14:15 +010015#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <asm/irq.h>
17#include <asm/mach-types.h>
Dmitry Artamonow8715b292009-11-27 12:09:25 +010018#include <mach/h3xxx.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
20#include "sa1100_generic.h"
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
23{
Dmitry Artamonow2a837092009-12-06 17:12:49 +010024 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Dmitry Artamonow2a837092009-12-06 17:12:49 +010026 switch (skt->nr) {
27 case 0:
Russell King65474b42012-01-13 23:07:26 +000028 skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD0;
29 skt->stat[SOC_STAT_CD].name = "PCMCIA CD0";
30 skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ0;
31 skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ0";
Dmitry Artamonow2a837092009-12-06 17:12:49 +010032
Dmitry Artamonow22f97402009-11-27 12:02:28 +010033 err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");
Dmitry Artamonow2a837092009-12-06 17:12:49 +010034 if (err)
Russell King65474b42012-01-13 23:07:26 +000035 goto err01;
Dmitry Artamonow22f97402009-11-27 12:02:28 +010036 err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
37 if (err)
38 goto err03;
39 err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");
40 if (err)
41 goto err03;
42 err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);
43 if (err)
44 goto err04;
45 err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");
46 if (err)
47 goto err04;
48 err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);
49 if (err)
50 goto err05;
51 err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");
52 if (err)
53 goto err05;
54 err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);
55 if (err)
56 goto err06;
Dmitry Artamonow2a837092009-12-06 17:12:49 +010057 break;
58 case 1:
Russell King65474b42012-01-13 23:07:26 +000059 skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD1;
60 skt->stat[SOC_STAT_CD].name = "PCMCIA CD1";
61 skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ1;
62 skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ1";
Dmitry Artamonow2a837092009-12-06 17:12:49 +010063 break;
64 }
65 return 0;
66
Dmitry Artamonow22f97402009-11-27 12:02:28 +010067err06: gpio_free(H3XXX_EGPIO_CARD_RESET);
68err05: gpio_free(H3XXX_EGPIO_OPT_RESET);
69err04: gpio_free(H3XXX_EGPIO_OPT_ON);
70err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
Dmitry Artamonow2a837092009-12-06 17:12:49 +010071err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
Russell King65474b42012-01-13 23:07:26 +000072 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -070073}
74
75static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
76{
Dmitry Artamonow2a837092009-12-06 17:12:49 +010077 switch (skt->nr) {
78 case 0:
Dmitry Artamonow22f97402009-11-27 12:02:28 +010079 /* Disable CF bus: */
80 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
81 gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
82 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
83
84 gpio_free(H3XXX_EGPIO_CARD_RESET);
85 gpio_free(H3XXX_EGPIO_OPT_RESET);
86 gpio_free(H3XXX_EGPIO_OPT_ON);
87 gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
Dmitry Artamonow2a837092009-12-06 17:12:49 +010088 break;
89 case 1:
Dmitry Artamonow2a837092009-12-06 17:12:49 +010090 break;
91 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070092}
93
94static void
95h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
96{
Russell King65474b42012-01-13 23:07:26 +000097 state->bvd1 = 0;
98 state->bvd2 = 0;
Russell King65474b42012-01-13 23:07:26 +000099 state->vs_3v = 0;
100 state->vs_Xv = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101}
102
103static int
104h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
105{
106 if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
107 printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
108 state->Vcc / 10, state->Vcc % 10);
109 return -1;
110 }
111
Dmitry Artamonow22f97402009-11-27 12:02:28 +0100112 gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
114 /* Silently ignore Vpp, output enable, speaker enable. */
115
116 return 0;
117}
118
119static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
120{
121 /* Enable CF bus: */
Dmitry Artamonow22f97402009-11-27 12:02:28 +0100122 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);
123 gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);
124 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125
126 msleep(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127}
128
129static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
130{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 /*
132 * FIXME: This doesn't fit well. We don't have the mechanism in
133 * the generic PCMCIA layer to deal with the idea of two sockets
134 * on one bus. We rely on the cs.c behaviour shutting down
135 * socket 0 then socket 1.
136 */
137 if (skt->nr == 1) {
Dmitry Artamonow22f97402009-11-27 12:02:28 +0100138 gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
139 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 /* hmm, does this suck power? */
Dmitry Artamonow22f97402009-11-27 12:02:28 +0100141 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 }
143}
144
145struct pcmcia_low_level h3600_pcmcia_ops = {
146 .owner = THIS_MODULE,
147 .hw_init = h3600_pcmcia_hw_init,
148 .hw_shutdown = h3600_pcmcia_hw_shutdown,
149 .socket_state = h3600_pcmcia_socket_state,
150 .configure_socket = h3600_pcmcia_configure_socket,
151
152 .socket_init = h3600_pcmcia_socket_init,
153 .socket_suspend = h3600_pcmcia_socket_suspend,
154};
155
Uwe Kleine-König5b85e042010-11-04 10:46:14 +0100156int __devinit pcmcia_h3600_init(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157{
158 int ret = -ENODEV;
159
Dmitry Artamonowe7435f82009-11-27 12:13:47 +0100160 if (machine_is_h3600() || machine_is_h3100())
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
162
163 return ret;
164}