| /* |
| * drivers/pcmcia/sa1100_graphicsclient.c |
| * |
| * PCMCIA implementation routines for Graphics Client Plus |
| * |
| * 9/12/01 Woojung |
| * Turn power OFF at startup |
| * 1/31/2001 Woojung Huh |
| * Fix for GC Plus PCMCIA Reset Problem |
| * 2/27/2001 Woojung Huh [whuh@applieddata.net] |
| * Fix |
| * |
| */ |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/delay.h> |
| |
| #include <asm/hardware.h> |
| #include <asm/irq.h> |
| #include "sa1100_generic.h" |
| |
| #error This is broken! |
| |
| #define S0_CD_IRQ 60 // Socket 0 Card Detect IRQ |
| #define S0_STS_IRQ 55 // Socket 0 PCMCIA IRQ |
| |
| static volatile unsigned long *PCMCIA_Status = |
| ((volatile unsigned long *) ADS_p2v(_ADS_CS_STATUS)); |
| |
| static volatile unsigned long *PCMCIA_Power = |
| ((volatile unsigned long *) ADS_p2v(_ADS_CS_PR)); |
| |
| static int gcplus_pcmcia_init(struct pcmcia_init *init) |
| { |
| int irq, res; |
| |
| // Reset PCMCIA |
| // Reset Timing for CPLD(U2) version 8001E or later |
| *PCMCIA_Power &= ~ ADS_CS_PR_A_RESET; |
| udelay(12); // 12 uSec |
| |
| *PCMCIA_Power |= ADS_CS_PR_A_RESET; |
| mdelay(30); // 30 mSec |
| |
| // Turn off 5V |
| *PCMCIA_Power &= ~0x03; |
| |
| /* Register interrupts */ |
| irq = S0_CD_IRQ; |
| res = request_irq(irq, init->handler, SA_INTERRUPT, "PCMCIA 0 CD", NULL); |
| if (res < 0) { |
| printk(KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq); |
| return -1; |
| } |
| |
| return 1; // 1 PCMCIA Slot |
| } |
| |
| static int gcplus_pcmcia_shutdown(void) |
| { |
| /* disable IRQs */ |
| free_irq( S0_CD_IRQ, NULL); |
| |
| /* Shutdown PCMCIA power */ |
| mdelay(2); // 2msec |
| *PCMCIA_Power &= ~0x03; |
| |
| return 0; |
| } |
| |
| static int gcplus_pcmcia_socket_state(struct pcmcia_state_array |
| *state_array){ |
| unsigned long levels; |
| |
| if(state_array->size<1) return -1; |
| |
| memset(state_array->state, 0, |
| (state_array->size)*sizeof(struct pcmcia_state)); |
| |
| levels=*PCMCIA_Status; |
| |
| state_array->state[0].detect=(levels & ADS_CS_ST_A_CD)?1:0; |
| state_array->state[0].ready=(levels & ADS_CS_ST_A_READY)?1:0; |
| state_array->state[0].bvd1= 0; |
| state_array->state[0].bvd2= 0; |
| state_array->state[0].wrprot=0; |
| state_array->state[0].vs_3v=0; |
| state_array->state[0].vs_Xv=0; |
| |
| return 1; |
| } |
| |
| static int gcplus_pcmcia_get_irq_info(struct pcmcia_irq_info *info) |
| { |
| if (info->sock > 1) |
| return -1; |
| |
| if (info->sock == 0) |
| info->irq = S0_STS_IRQ; |
| |
| return 0; |
| } |
| |
| static int gcplus_pcmcia_configure_socket(const struct pcmcia_configure |
| *configure) |
| { |
| unsigned long flags; |
| |
| if(configure->sock>1) return -1; |
| |
| save_flags_cli(flags); |
| |
| switch (configure->vcc) { |
| case 0: |
| *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER); |
| break; |
| |
| case 50: |
| *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER); |
| *PCMCIA_Power |= ADS_CS_PR_A_5V_POWER; |
| break; |
| |
| case 33: |
| *PCMCIA_Power &= ~(ADS_CS_PR_A_3V_POWER | ADS_CS_PR_A_5V_POWER); |
| *PCMCIA_Power |= ADS_CS_PR_A_3V_POWER; |
| break; |
| |
| default: |
| printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, |
| configure->vcc); |
| restore_flags(flags); |
| return -1; |
| } |
| |
| /* Silently ignore Vpp, output enable, speaker enable. */ |
| |
| // Reset PCMCIA |
| *PCMCIA_Power &= ~ ADS_CS_PR_A_RESET; |
| udelay(12); |
| |
| *PCMCIA_Power |= ADS_CS_PR_A_RESET; |
| mdelay(30); |
| |
| restore_flags(flags); |
| |
| return 0; |
| } |
| |
| static int gcplus_pcmcia_socket_init(int sock) |
| { |
| return 0; |
| } |
| |
| static int gcplus_pcmcia_socket_suspend(int sock) |
| { |
| return 0; |
| } |
| |
| struct pcmcia_low_level gcplus_pcmcia_ops = { |
| init: gcplus_pcmcia_init, |
| shutdown: gcplus_pcmcia_shutdown, |
| socket_state: gcplus_pcmcia_socket_state, |
| get_irq_info: gcplus_pcmcia_get_irq_info, |
| configure_socket: gcplus_pcmcia_configure_socket, |
| |
| socket_init: gcplus_pcmcia_socket_init, |
| socket_suspend: gcplus_pcmcia_socket_suspend, |
| }; |
| |