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/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");