1/* 2 * drivers/pcmcia/sa1100_shannon.c 3 * 4 * PCMCIA implementation routines for Shannon 5 * 6 */ 7#include <linux/module.h> 8#include <linux/kernel.h> 9#include <linux/device.h> 10#include <linux/init.h> 11 12#include <asm/hardware.h> 13#include <asm/mach-types.h> 14#include <asm/arch/shannon.h> 15#include <asm/irq.h> 16#include "sa1100_generic.h" 17 18static struct pcmcia_irqs irqs[] = { 19 { 0, SHANNON_IRQ_GPIO_EJECT_0, "PCMCIA_CD_0" }, 20 { 1, SHANNON_IRQ_GPIO_EJECT_1, "PCMCIA_CD_1" }, 21}; 22 23static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt) 24{ 25 /* All those are inputs */ 26 GPDR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | 27 SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1); 28 GAFR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | 29 SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1); 30 31 skt->irq = skt->nr ? SHANNON_IRQ_GPIO_RDY_1 : SHANNON_IRQ_GPIO_RDY_0; 32 33 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); 34} 35 36static void shannon_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) 37{ 38 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); 39} 40 41static void 42shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt, 43 struct pcmcia_state *state) 44{ 45 unsigned long levels = GPLR; 46 47 switch (skt->nr) { 48 case 0: 49 state->detect = (levels & SHANNON_GPIO_EJECT_0) ? 0 : 1; 50 state->ready = (levels & SHANNON_GPIO_RDY_0) ? 1 : 0; 51 state->wrprot = 0; /* Not available on Shannon. */ 52 state->bvd1 = 1; 53 state->bvd2 = 1; 54 state->vs_3v = 1; 55 state->vs_Xv = 0; 56 break; 57 58 case 1: 59 state->detect = (levels & SHANNON_GPIO_EJECT_1) ? 0 : 1; 60 state->ready = (levels & SHANNON_GPIO_RDY_1) ? 1 : 0; 61 state->wrprot = 0; /* Not available on Shannon. */ 62 state->bvd1 = 1; 63 state->bvd2 = 1; 64 state->vs_3v = 1; 65 state->vs_Xv = 0; 66 break; 67 } 68} 69 70static int 71shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, 72 const socket_state_t *state) 73{ 74 switch (state->Vcc) { 75 case 0: /* power off */ 76 printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __FUNCTION__); 77 break; 78 case 50: 79 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __FUNCTION__); 80 case 33: 81 break; 82 default: 83 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", 84 __FUNCTION__, state->Vcc); 85 return -1; 86 } 87 88 printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __FUNCTION__); 89 90 /* Silently ignore Vpp, output enable, speaker enable. */ 91 92 return 0; 93} 94 95static void shannon_pcmcia_socket_init(struct soc_pcmcia_socket *skt) 96{ 97 soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); 98} 99 100static void shannon_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) 101{ 102 soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); 103} 104 105static struct pcmcia_low_level shannon_pcmcia_ops = { 106 .owner = THIS_MODULE, 107 .hw_init = shannon_pcmcia_hw_init, 108 .hw_shutdown = shannon_pcmcia_hw_shutdown, 109 .socket_state = shannon_pcmcia_socket_state, 110 .configure_socket = shannon_pcmcia_configure_socket, 111 112 .socket_init = shannon_pcmcia_socket_init, 113 .socket_suspend = shannon_pcmcia_socket_suspend, 114}; 115 116int __init pcmcia_shannon_init(struct device *dev) 117{ 118 int ret = -ENODEV; 119 120 if (machine_is_shannon()) 121 ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2); 122 123 return ret; 124} 125