drivers/pcmcia/sa1111_generic.c

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