2 * drivers/pcmcia/sa1100_graphicsclient.c
4 * PCMCIA implementation routines for Graphics Client Plus
7 * Turn power OFF at startup
8 * 1/31/2001 Woojung Huh
9 * Fix for GC Plus PCMCIA Reset Problem
10 * 2/27/2001 Woojung Huh [whuh@applieddata.net]
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
16 #include <linux/delay.h>
18 #include <asm/hardware.h>
20 #include "sa1100_generic.h"
22 #error This is broken!
24 #define S0_CD_IRQ 60 // Socket 0 Card Detect IRQ
25 #define S0_STS_IRQ 55 // Socket 0 PCMCIA IRQ
27 static volatile unsigned long *PCMCIA_Status =
28 ((volatile unsigned long *) ADS_p2v(_ADS_CS_STATUS));
30 static volatile unsigned long *PCMCIA_Power =
31 ((volatile unsigned long *) ADS_p2v(_ADS_CS_PR));
33 static int gcplus_pcmcia_init(struct pcmcia_init *init)
38 // Reset Timing for CPLD(U2) version 8001E or later
39 *PCMCIA_Power &= ~ ADS_CS_PR_A_RESET;
40 udelay(12); // 12 uSec
42 *PCMCIA_Power |= ADS_CS_PR_A_RESET;
43 mdelay(30); // 30 mSec
46 *PCMCIA_Power &= ~0x03;
48 /* Register interrupts */
50 res = request_irq(irq, init->handler, SA_INTERRUPT, "PCMCIA 0 CD", NULL);
52 printk(KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq);
56 return 1; // 1 PCMCIA Slot
59 static int gcplus_pcmcia_shutdown(void)
62 free_irq( S0_CD_IRQ, NULL);
64 /* Shutdown PCMCIA power */
66 *PCMCIA_Power &= ~0x03;
71 static int gcplus_pcmcia_socket_state(struct pcmcia_state_array
75 if(state_array->size<1) return -1;
77 memset(state_array->state, 0,
78 (state_array->size)*sizeof(struct pcmcia_state));
80 levels=*PCMCIA_Status;
82 state_array->state[0].detect=(levels & ADS_CS_ST_A_CD)?1:0;
83 state_array->state[0].ready=(levels & ADS_CS_ST_A_READY)?1:0;
84 state_array->state[0].bvd1= 0;
85 state_array->state[0].bvd2= 0;
86 state_array->state[0].wrprot=0;
87 state_array->state[0].vs_3v=0;
88 state_array->state[0].vs_Xv=0;
93 static int gcplus_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
99 info->irq = S0_STS_IRQ;
104 static int gcplus_pcmcia_configure_socket(const struct pcmcia_configure
109 if(configure->sock>1) return -1;
111 save_flags_cli(flags);
113 switch (configure->vcc) {
115 *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER);
119 *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER);
120 *PCMCIA_Power |= ADS_CS_PR_A_5V_POWER;
124 *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER);
125 *PCMCIA_Power |= ADS_CS_PR_A_3V_POWER;
129 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
131 restore_flags(flags);
135 /* Silently ignore Vpp, output enable, speaker enable. */
138 *PCMCIA_Power &= ~ ADS_CS_PR_A_RESET;
141 *PCMCIA_Power |= ADS_CS_PR_A_RESET;
144 restore_flags(flags);
149 static int gcplus_pcmcia_socket_init(int sock)
154 static int gcplus_pcmcia_socket_suspend(int sock)
159 struct pcmcia_low_level gcplus_pcmcia_ops = {
160 init: gcplus_pcmcia_init,
161 shutdown: gcplus_pcmcia_shutdown,
162 socket_state: gcplus_pcmcia_socket_state,
163 get_irq_info: gcplus_pcmcia_get_irq_info,
164 configure_socket: gcplus_pcmcia_configure_socket,
166 socket_init: gcplus_pcmcia_socket_init,
167 socket_suspend: gcplus_pcmcia_socket_suspend,