1 /* 2 * linux/drivers/pcmcia/sa1111_generic.c 3 * 4 * We implement the generic parts of a SA1111 PCMCIA driver. This 5 * basically means we handle everything except controlling the 6 * power. Power is machine specific... 7 */ 8 #include <linux/config.h> 9 #include <linux/module.h> 10 #include <linux/kernel.h> 11 #include <linux/ioport.h> 12 #include <linux/device.h> 13 #include <linux/interrupt.h> 14 #include <linux/init.h> 15 16 #include <pcmcia/ss.h> 17 18 #include <asm/hardware.h> 19 #include <asm/hardware/sa1111.h> 20 #include <asm/io.h> 21 #include <asm/irq.h> 22 23 #include "sa1111_generic.h" 24 25 static struct pcmcia_irqs irqs[] = { 26 { 0, IRQ_S0_CD_VALID, "SA1111 PCMCIA card detect" }, 27 { 0, IRQ_S0_BVD1_STSCHG, "SA1111 PCMCIA BVD1" }, 28 { 1, IRQ_S1_CD_VALID, "SA1111 CF card detect" }, 29 { 1, IRQ_S1_BVD1_STSCHG, "SA1111 CF BVD1" }, 30 }; 31 32 int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt) 33 { 34 if (skt->irq == NO_IRQ) 35 skt->irq = skt->nr ? IRQ_S1_READY_NINT : IRQ_S0_READY_NINT; 36 37 return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); 38 } 39 40 void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) 41 { 42 soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); 43 } 44 45 void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) 46 { 47 struct sa1111_dev *sadev = SA1111_DEV(skt->dev); 48 unsigned long status = sa1111_readl(sadev->mapbase + SA1111_PCSR); 49 50 switch (skt->nr) { 51 case 0: 52 state->detect = status & PCSR_S0_DETECT ? 0 : 1; 53 state->ready = status & PCSR_S0_READY ? 1 : 0; 54 state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0; 55 state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0; 56 state->wrprot = status & PCSR_S0_WP ? 1 : 0; 57 state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1; 58 state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1; 59 break; 60 61 case 1: 62 state->detect = status & PCSR_S1_DETECT ? 0 : 1; 63 state->ready = status & PCSR_S1_READY ? 1 : 0; 64 state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0; 65 state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0; 66 state->wrprot = status & PCSR_S1_WP ? 1 : 0; 67 state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1; 68 state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1; 69 break; 70 } 71 } 72 73 int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) 74 { 75 struct sa1111_dev *sadev = SA1111_DEV(skt->dev); 76 unsigned int pccr_skt_mask, pccr_set_mask, val; 77 unsigned long flags; 78 79 switch (skt->nr) { 80 case 0: 81 pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE; 82 break; 83 84 case 1: 85 pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE; 86 break; 87 88 default: 89 return -1; 90 } 91 92 pccr_set_mask = 0; 93 94 if (state->Vcc != 0) 95 pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN; 96 if (state->Vcc == 50) 97 pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE; 98 if (state->flags & SS_RESET) 99 pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST; 100 if (state->flags & SS_OUTPUT_ENA) 101 pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT; 102 103 local_irq_save(flags); 104 val = sa1111_readl(sadev->mapbase + SA1111_PCCR); 105 val &= ~pccr_skt_mask; 106 val |= pccr_set_mask & pccr_skt_mask; 107 sa1111_writel(val, sadev->mapbase + SA1111_PCCR); 108 local_irq_restore(flags); 109 110 return 0; 111 } 112 113 void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt) 114 { 115 soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); 116 } 117 118 void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) 119 { 120 soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); 121 } 122 123 static int pcmcia_probe(struct sa1111_dev *dev) 124 { 125 void __iomem *base; 126 127 if (!request_mem_region(dev->res.start, 512, 128 SA1111_DRIVER_NAME(dev))) 129 return -EBUSY; 130 131 base = dev->mapbase; 132 133 /* 134 * Initialise the suspend state. 135 */ 136 sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + SA1111_PCSSR); 137 sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_PCCR); 138 139 #ifdef CONFIG_SA1100_BADGE4 140 pcmcia_badge4_init(&dev->dev); 141 #endif 142 #ifdef CONFIG_SA1100_JORNADA720 143 pcmcia_jornada720_init(&dev->dev); 144 #endif 145 #ifdef CONFIG_ARCH_LUBBOCK 146 pcmcia_lubbock_init(dev); 147 #endif 148 #ifdef CONFIG_ASSABET_NEPONSET 149 pcmcia_neponset_init(dev); 150 #endif 151 return 0; 152 } 153 154 static int __devexit pcmcia_remove(struct sa1111_dev *dev) 155 { 156 soc_common_drv_pcmcia_remove(&dev->dev); 157 release_mem_region(dev->res.start, 512); 158 return 0; 159 } 160 161 static int pcmcia_suspend(struct sa1111_dev *dev, pm_message_t state) 162 { 163 return pcmcia_socket_dev_suspend(&dev->dev, state); 164 } 165 166 static int pcmcia_resume(struct sa1111_dev *dev) 167 { 168 return pcmcia_socket_dev_resume(&dev->dev); 169 } 170 171 static struct sa1111_driver pcmcia_driver = { 172 .drv = { 173 .name = "sa1111-pcmcia", 174 }, 175 .devid = SA1111_DEVID_PCMCIA, 176 .probe = pcmcia_probe, 177 .remove = __devexit_p(pcmcia_remove), 178 .suspend = pcmcia_suspend, 179 .resume = pcmcia_resume, 180 }; 181 182 static int __init sa1111_drv_pcmcia_init(void) 183 { 184 return sa1111_driver_register(&pcmcia_driver); 185 } 186 187 static void __exit sa1111_drv_pcmcia_exit(void) 188 { 189 sa1111_driver_unregister(&pcmcia_driver); 190 } 191 192 fs_initcall(sa1111_drv_pcmcia_init); 193 module_exit(sa1111_drv_pcmcia_exit); 194 195 MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver"); 196 MODULE_LICENSE("GPL"); 197