1 /*
2 * drivers/pcmcia/sa1100_adsbitsy.c
3 *
4 * PCMCIA implementation routines for ADS Bitsy
5 *
6 * 9/18/01 Woojung
7 * Fixed wrong PCMCIA voltage setting
8 *
9 * 7/5/01 Woojung Huh <whuh@applieddata.net>
10 *
11 */
12 #include <linux/kernel.h>
13 #include <linux/sched.h>
14
15 #include <asm/hardware.h>
16
17 #include "sa1100_generic.h"
18 #include "sa1111_generic.h"
19
adsbitsy_pcmcia_init(struct pcmcia_init * init)20 static int adsbitsy_pcmcia_init(struct pcmcia_init *init)
21 {
22 /* Set GPIO_A<3:0> to be outputs for PCMCIA/CF power controller: */
23 PA_DDR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3);
24
25 /* Disable Power 3.3V/5V for PCMCIA/CF */
26 PA_DWR |= GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3;
27
28 /* Why? */
29 MECR = 0x09430943;
30
31 return sa1111_pcmcia_init(init);
32 }
33
34 static int
adsbitsy_pcmcia_configure_socket(const struct pcmcia_configure * conf)35 adsbitsy_pcmcia_configure_socket(const struct pcmcia_configure *conf)
36 {
37 unsigned int pa_dwr_mask, pa_dwr_set;
38 int ret;
39
40 switch (conf->sock) {
41 case 0:
42 pa_dwr_mask = GPIO_GPIO0 | GPIO_GPIO1;
43
44 switch (conf->vcc) {
45 default:
46 case 0: pa_dwr_set = GPIO_GPIO0 | GPIO_GPIO1; break;
47 case 33: pa_dwr_set = GPIO_GPIO1; break;
48 case 50: pa_dwr_set = GPIO_GPIO0; break;
49 }
50 break;
51
52 case 1:
53 pa_dwr_mask = GPIO_GPIO2 | GPIO_GPIO3;
54
55 switch (conf->vcc) {
56 default:
57 case 0: pa_dwr_set = 0; break;
58 case 33: pa_dwr_set = GPIO_GPIO2; break;
59 case 50: pa_dwr_set = GPIO_GPIO3; break;
60 }
61
62 default:
63 return -1;
64 }
65
66 if (conf->vpp != conf->vcc && conf->vpp != 0) {
67 printk(KERN_ERR "%s(): CF slot cannot support VPP %u\n",
68 __FUNCTION__, conf->vpp);
69 return -1;
70 }
71
72 ret = sa1111_pcmcia_configure_socket(conf);
73 if (ret == 0) {
74 unsigned long flags;
75
76 local_irq_save(flags);
77 PA_DWR = (PA_DWR & ~pa_dwr_mask) | pa_dwr_set;
78 local_irq_restore(flags);
79 }
80
81 return ret;
82 }
83
84 struct pcmcia_low_level adsbitsy_pcmcia_ops = {
85 init: adsbitsy_pcmcia_init,
86 shutdown: sa1111_pcmcia_shutdown,
87 socket_state: sa1111_pcmcia_socket_state,
88 get_irq_info: sa1111_pcmcia_get_irq_info,
89 configure_socket: adsbitsy_pcmcia_configure_socket,
90
91 socket_init: sa1111_pcmcia_socket_init,
92 socket_suspend: sa1111_pcmcia_socket_suspend,
93 };
94
95