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 #include <linux/io.h>
  15 #include <linux/slab.h>
  16
  17 #include <pcmcia/ss.h>
  18
  19 #include <mach/hardware.h>
  20 #include <asm/hardware/sa1111.h>
  21 #include <asm/irq.h>
  22
  23 #include "sa1111_generic.h"
  24
  25 #define IDX_IRQ_S0_READY_NINT   (0)
  26 #define IDX_IRQ_S0_CD_VALID     (1)
  27 #define IDX_IRQ_S0_BVD1_STSCHG  (2)
  28 #define IDX_IRQ_S1_READY_NINT   (3)
  29 #define IDX_IRQ_S1_CD_VALID     (4)
  30 #define IDX_IRQ_S1_BVD1_STSCHG  (5)
  31
  32 void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
  33 {
  34         struct sa1111_pcmcia_socket *s = to_skt(skt);
  35         unsigned long status = sa1111_readl(s->dev->mapbase + SA1111_PCSR);
  36
  37         switch (skt->nr) {
  38         case 0:
  39                 state->detect = status & PCSR_S0_DETECT ? 0 : 1;
  40                 state->ready  = status & PCSR_S0_READY  ? 1 : 0;
  41                 state->bvd1   = status & PCSR_S0_BVD1   ? 1 : 0;
  42                 state->bvd2   = status & PCSR_S0_BVD2   ? 1 : 0;
  43                 state->wrprot = status & PCSR_S0_WP     ? 1 : 0;
  44                 state->vs_3v  = status & PCSR_S0_VS1    ? 0 : 1;
  45                 state->vs_Xv  = status & PCSR_S0_VS2    ? 0 : 1;
  46                 break;
  47
  48         case 1:
  49                 state->detect = status & PCSR_S1_DETECT ? 0 : 1;
  50                 state->ready  = status & PCSR_S1_READY  ? 1 : 0;
  51                 state->bvd1   = status & PCSR_S1_BVD1   ? 1 : 0;
  52                 state->bvd2   = status & PCSR_S1_BVD2   ? 1 : 0;
  53                 state->wrprot = status & PCSR_S1_WP     ? 1 : 0;
  54                 state->vs_3v  = status & PCSR_S1_VS1    ? 0 : 1;
  55                 state->vs_Xv  = status & PCSR_S1_VS2    ? 0 : 1;
  56                 break;
  57         }
  58 }
  59
  60 int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
  61 {
  62         struct sa1111_pcmcia_socket *s = to_skt(skt);
  63         unsigned int pccr_skt_mask, pccr_set_mask, val;
  64         unsigned long flags;
  65
  66         switch (skt->nr) {
  67         case 0:
  68                 pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE;
  69                 break;
  70
  71         case 1:
  72                 pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE;
  73                 break;
  74
  75         default:
  76                 return -1;
  77         }
  78
  79         pccr_set_mask = 0;
  80
  81         if (state->Vcc != 0)
  82                 pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN;
  83         if (state->Vcc == 50)
  84                 pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE;
  85         if (state->flags & SS_RESET)
  86                 pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST;
  87         if (state->flags & SS_OUTPUT_ENA)
  88                 pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
  89
  90         local_irq_save(flags);
  91         val = sa1111_readl(s->dev->mapbase + SA1111_PCCR);
  92         val &= ~pccr_skt_mask;
  93         val |= pccr_set_mask & pccr_skt_mask;
  94         sa1111_writel(val, s->dev->mapbase + SA1111_PCCR);
  95         local_irq_restore(flags);
  96
  97         return 0;
  98 }
  99
 100 int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
 101         int (*add)(struct soc_pcmcia_socket *))
 102 {
 103         struct sa1111_pcmcia_socket *s;
 104         int i, ret = 0;
 105
 106         ops->socket_state = sa1111_pcmcia_socket_state;
 107
 108         for (i = 0; i < ops->nr; i++) {
 109                 s = kzalloc(sizeof(*s), GFP_KERNEL);
 110                 if (!s)
 111                         return -ENOMEM;
 112
 113                 s->soc.nr = ops->first + i;
 114                 soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
 115                 s->dev = dev;
 116                 if (s->soc.nr) {
 117                         s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT];
 118                         s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
 119                         s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
 120                         s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
 121                         s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
 122                 } else {
 123                         s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT];
 124                         s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
 125                         s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
 126                         s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
 127                         s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
 128                 }
 129
 130                 ret = add(&s->soc);
 131                 if (ret == 0) {
 132                         s->next = dev_get_drvdata(&dev->dev);
 133                         dev_set_drvdata(&dev->dev, s);
 134                 } else
 135                         kfree(s);
 136         }
 137
 138         return ret;
 139 }
 140
 141 static int pcmcia_probe(struct sa1111_dev *dev)
 142 {
 143         void __iomem *base;
 144
 145         dev_set_drvdata(&dev->dev, NULL);
 146
 147         if (!request_mem_region(dev->res.start, 512,
 148                                 SA1111_DRIVER_NAME(dev)))
 149                 return -EBUSY;
 150
 151         base = dev->mapbase;
 152
 153         /*
 154          * Initialise the suspend state.
 155          */
 156         sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + SA1111_PCSSR);
 157         sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_PCCR);
 158
 159 #ifdef CONFIG_SA1100_BADGE4
 160         pcmcia_badge4_init(&dev->dev);
 161 #endif
 162 #ifdef CONFIG_SA1100_JORNADA720
 163         pcmcia_jornada720_init(&dev->dev);
 164 #endif
 165 #ifdef CONFIG_ARCH_LUBBOCK
 166         pcmcia_lubbock_init(dev);
 167 #endif
 168 #ifdef CONFIG_ASSABET_NEPONSET
 169         pcmcia_neponset_init(dev);
 170 #endif
 171         return 0;
 172 }
 173
 174 static int __devexit pcmcia_remove(struct sa1111_dev *dev)
 175 {
 176         struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev);
 177
 178         dev_set_drvdata(&dev->dev, NULL);
 179
 180         for (; s; s = next) {
 181                 next = s->next;
 182                 soc_pcmcia_remove_one(&s->soc);
 183                 kfree(s);
 184         }
 185
 186         release_mem_region(dev->res.start, 512);
 187         return 0;
 188 }
 189
 190 static struct sa1111_driver pcmcia_driver = {
 191         .drv = {
 192                 .name   = "sa1111-pcmcia",
 193         },
 194         .devid          = SA1111_DEVID_PCMCIA,
 195         .probe          = pcmcia_probe,
 196         .remove         = __devexit_p(pcmcia_remove),
 197 };
 198
 199 static int __init sa1111_drv_pcmcia_init(void)
 200 {
 201         return sa1111_driver_register(&pcmcia_driver);
 202 }
 203
 204 static void __exit sa1111_drv_pcmcia_exit(void)
 205 {
 206         sa1111_driver_unregister(&pcmcia_driver);
 207 }
 208
 209 fs_initcall(sa1111_drv_pcmcia_init);
 210 module_exit(sa1111_drv_pcmcia_exit);
 211
 212 MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
 213 MODULE_LICENSE("GPL");