1 /*
2 * drivers/pcmcia/sa1100_pangolin.c
3 *
4 * PCMCIA implementation routines for Pangolin
5 *
6 */
7 #include <linux/kernel.h>
8 #include <linux/sched.h>
9
10 #include <asm/hardware.h>
11 #include <asm/irq.h>
12 #include "sa1100_generic.h"
13
pangolin_pcmcia_init(struct pcmcia_init * init)14 static int pangolin_pcmcia_init(struct pcmcia_init *init){
15 int irq, res;
16
17 #ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
18 /* Enable PCMCIA bus: */
19 GPCR = GPIO_PCMCIA_BUS_ON;
20 #endif
21
22 /* Set transition detect */
23 set_GPIO_IRQ_edge( GPIO_PCMCIA_CD, GPIO_BOTH_EDGES );
24 set_GPIO_IRQ_edge( GPIO_PCMCIA_IRQ, GPIO_FALLING_EDGE );
25
26 /* Register interrupts */
27 irq = IRQ_PCMCIA_CD;
28 res = request_irq( irq, init->handler, SA_INTERRUPT, "PCMCIA_CD", NULL );
29 if( res < 0 ) goto irq_err;
30
31 /* There's only one slot, but it's "Slot 1": */
32 return 2;
33
34 irq_err:
35 printk( KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq );
36 return -1;
37 }
38
pangolin_pcmcia_shutdown(void)39 static int pangolin_pcmcia_shutdown(void)
40 {
41 /* disable IRQs */
42 free_irq( IRQ_PCMCIA_CD, NULL );
43 #ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
44 /* Disable PCMCIA bus: */
45 GPSR = GPIO_PCMCIA_BUS_ON;
46 #endif
47 return 0;
48 }
49
pangolin_pcmcia_socket_state(struct pcmcia_state_array * state_array)50 static int pangolin_pcmcia_socket_state(struct pcmcia_state_array
51 *state_array){
52 unsigned long levels;
53
54 if(state_array->size<2) return -1;
55
56 memset(state_array->state, 0,
57 (state_array->size)*sizeof(struct pcmcia_state));
58
59 levels=GPLR;
60 #ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
61 state_array->state[1].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
62 state_array->state[1].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
63 state_array->state[1].bvd1=1; /* Not available on Pangolin. */
64 state_array->state[1].bvd2=1; /* Not available on Pangolin. */
65 state_array->state[1].wrprot=0; /* Not available on Pangolin. */
66 state_array->state[1].vs_3v=1; /* Can only apply 3.3V on Pangolin. */
67 state_array->state[1].vs_Xv=0;
68 #else
69 state_array->state[0].detect=((levels & GPIO_PCMCIA_CD)==0)?1:0;
70 state_array->state[0].ready=(levels & GPIO_PCMCIA_IRQ)?1:0;
71 state_array->state[0].bvd1=1; /* Not available on Pangolin. */
72 state_array->state[0].bvd2=1; /* Not available on Pangolin. */
73 state_array->state[0].wrprot=0; /* Not available on Pangolin. */
74 state_array->state[0].vs_3v=0; /* voltage level is determined by jumper setting */
75 state_array->state[0].vs_Xv=0;
76 #endif
77 return 1;
78 }
79
pangolin_pcmcia_get_irq_info(struct pcmcia_irq_info * info)80 static int pangolin_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
81
82 if(info->sock>1) return -1;
83 #ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
84 if(info->sock==1)
85 info->irq=IRQ_PCMCIA_IRQ;
86 #else
87 if(info->sock==0)
88 info->irq=IRQ_PCMCIA_IRQ;
89 #endif
90 return 0;
91 }
92
pangolin_pcmcia_configure_socket(const struct pcmcia_configure * configure)93 static int pangolin_pcmcia_configure_socket(const struct pcmcia_configure
94 *configure)
95 {
96 unsigned long value, flags;
97
98 if(configure->sock>1) return -1;
99 #ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
100 if(configure->sock==0) return 0;
101 #endif
102 save_flags_cli(flags);
103
104 /* Murphy: BUS_ON different from POWER ? */
105
106 switch(configure->vcc){
107 case 0:
108 break;
109 #ifndef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
110 case 50:
111 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
112 __FUNCTION__);
113 case 33: /* Can only apply 3.3V to the CF slot. */
114 break;
115 #else
116 case 50:
117 printk(KERN_WARNING "%s(): CS asked for 5V, determinded by jumper setting...\n", __FUNCTION__);
118 break;
119 case 33:
120 printk(KERN_WARNING "%s(): CS asked for 3.3V, determined by jumper setting...\n", __FUNCTION__);
121 break;
122 #endif
123 default:
124 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
125 configure->vcc);
126 restore_flags(flags);
127 return -1;
128 }
129 #ifdef CONFIG_SA1100_PANGOLIN_PCMCIA_IDE
130 /* reset & unreset request */
131 if(configure->sock==0) {
132 if(configure->reset) {
133 GPSR |= GPIO_PCMCIA_RESET;
134 } else {
135 GPCR |= GPIO_PCMCIA_RESET;
136 }
137 }
138 #endif
139 /* Silently ignore Vpp, output enable, speaker enable. */
140 restore_flags(flags);
141 return 0;
142 }
143
pangolin_pcmcia_socket_init(int sock)144 static int pangolin_pcmcia_socket_init(int sock)
145 {
146 /* enable card status IRQs - see sa1100_assabet.c for details */
147 return -1;
148 }
149
pangolin_pcmcia_socket_suspend(int sock)150 static int pangolin_pcmcia_socket_suspend(int sock)
151 {
152 /* disable card status IRQs - see sa1100_assabet.c for details */
153 return -1;
154 }
155
156 struct pcmcia_low_level pangolin_pcmcia_ops = {
157 init: pangolin_pcmcia_init,
158 shutdown: pangolin_pcmcia_shutdown,
159 socket_state: pangolin_pcmcia_socket_state,
160 get_irq_info: pangolin_pcmcia_get_irq_info,
161 configure_socket: pangolin_pcmcia_configure_socket,
162
163 socket_init: pangolin_pcmcia_socket_init,
164 socket_suspend, pangolin_pcmcia_socket_suspend,
165 };
166
167