2 * drivers/pcmcia/sa1100_freebird.c
4 * Created by Eric Peng <ericpeng@coventive.com>
7 #include <linux/kernel.h>
8 #include <linux/sched.h>
10 #include <asm/hardware.h>
12 #include "sa1100_generic.h"
15 static int freebird_pcmcia_init(struct pcmcia_init *init){
18 /* Enable Linkup CF card */
29 /* Set transition detect */
30 //set_GPIO_IRQ_edge( GPIO_CF_CD|GPIO_CF_BVD2|GPIO_CF_BVD1, GPIO_BOTH_EDGES );
31 //set_GPIO_IRQ_edge( GPIO_CF_IRQ, GPIO_FALLING_EDGE );
32 set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD|GPIO_FREEBIRD_CF_BVD,GPIO_NO_EDGES);
33 set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_IRQ, GPIO_FALLING_EDGE);
35 /* Register interrupts */
36 irq = IRQ_GPIO_FREEBIRD_CF_CD;
37 res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_CD", NULL );
38 if( res < 0 ) goto irq_err;
39 irq = IRQ_GPIO_FREEBIRD_CF_BVD;
40 res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_BVD1", NULL );
41 if( res < 0 ) goto irq_err;
43 /* There's only one slot, but it's "Slot 1": */
47 printk( KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq );
51 static int freebird_pcmcia_shutdown(void)
54 free_irq( IRQ_GPIO_FREEBIRD_CF_CD, NULL );
55 free_irq( IRQ_GPIO_FREEBIRD_CF_BVD, NULL );
58 LINKUP_PRC = 0x40; /* SSP=1 SOE=0 */
64 static int freebird_pcmcia_socket_state(struct pcmcia_state_array
68 if(state_array->size<2) return -1;
70 memset(state_array->state, 0,
71 (state_array->size)*sizeof(struct pcmcia_state));
74 //printk("LINKUP_PRS=%x \n",levels);
76 state_array->state[0].detect=
77 ((levels & (LINKUP_CD1 | LINKUP_CD2))==0)?1:0;
79 state_array->state[0].ready=(levels & LINKUP_RDY)?1:0;
81 state_array->state[0].bvd1=(levels & LINKUP_BVD1)?1:0;
83 state_array->state[0].bvd2=(levels & LINKUP_BVD2)?1:0;
85 state_array->state[0].wrprot=0; /* Not available on Assabet. */
87 state_array->state[0].vs_3v=1; /* Can only apply 3.3V on Assabet. */
89 state_array->state[0].vs_Xv=0;
94 static int freebird_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
96 if(info->sock>1) return -1;
99 info->irq=IRQ_GPIO_FREEBIRD_CF_IRQ;
104 static int freebird_pcmcia_configure_socket(const struct pcmcia_configure
107 unsigned long value, flags;
109 if(configure->sock>1) return -1;
111 if(configure->sock==1) return 0;
113 save_flags_cli(flags);
115 value = 0xc0; /* SSP=1 SOE=1 CFE=1 */
117 switch(configure->vcc){
123 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
126 case 33: /* Can only apply 3.3V to the CF slot. */
131 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
133 restore_flags(flags);
137 if (configure->reset)
138 value = (configure->reset) ? (value | LINKUP_RESET) : (value & ~LINKUP_RESET);
140 /* Silently ignore Vpp, output enable, speaker enable. */
143 //printk("LINKUP_PRC=%x\n",value);
144 restore_flags(flags);
149 static int freebird_pcmcia_socket_init(int sock)
151 set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD|GPIO_FREEBIRD_CF_BVD, GPIO_BOTH_EDGES);
155 static int freebird_pcmcia_socket_suspend(int sock)
157 set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD|GPIO_FREEBIRD_CF_BVD, GPIO_NO_EDGES);
161 struct pcmcia_low_level freebird_pcmcia_ops = {
162 init: freebird_pcmcia_init,
163 shutdown: freebird_pcmcia_shutdown,
164 socket_state: freebird_pcmcia_socket_state,
165 get_irq_info: freebird_pcmcia_get_irq_info,
166 configure_socket: freebird_pcmcia_configure_socket,
168 socket_init: freebird_pcmcia_socket_init,
169 socket_suspend: freebird_pcmcia_socket_suspend,