drivers/input/serio/i8042-sparcio.h

   1 #ifndef _I8042_SPARCIO_H
   2 #define _I8042_SPARCIO_H
   3
   4 #include <asm/io.h>
   5 #include <asm/oplib.h>
   6 #include <asm/prom.h>
   7 #include <asm/of_device.h>
   8
   9 static int i8042_kbd_irq = -1;
  10 static int i8042_aux_irq = -1;
  11 #define I8042_KBD_IRQ i8042_kbd_irq
  12 #define I8042_AUX_IRQ i8042_aux_irq
  13
  14 #define I8042_KBD_PHYS_DESC "sparcps2/serio0"
  15 #define I8042_AUX_PHYS_DESC "sparcps2/serio1"
  16 #define I8042_MUX_PHYS_DESC "sparcps2/serio%d"
  17
  18 static void __iomem *kbd_iobase;
  19 static struct resource *kbd_res;
  20
  21 #define I8042_COMMAND_REG       (kbd_iobase + 0x64UL)
  22 #define I8042_DATA_REG          (kbd_iobase + 0x60UL)
  23
  24 static inline int i8042_read_data(void)
  25 {
  26         return readb(kbd_iobase + 0x60UL);
  27 }
  28
  29 static inline int i8042_read_status(void)
  30 {
  31         return readb(kbd_iobase + 0x64UL);
  32 }
  33
  34 static inline void i8042_write_data(int val)
  35 {
  36         writeb(val, kbd_iobase + 0x60UL);
  37 }
  38
  39 static inline void i8042_write_command(int val)
  40 {
  41         writeb(val, kbd_iobase + 0x64UL);
  42 }
  43
  44 #define OBP_PS2KBD_NAME1        "kb_ps2"
  45 #define OBP_PS2KBD_NAME2        "keyboard"
  46 #define OBP_PS2MS_NAME1         "kdmouse"
  47 #define OBP_PS2MS_NAME2         "mouse"
  48
  49 static int __devinit sparc_i8042_probe(struct of_device *op, const struct of_device_id *match)
  50 {
  51         struct device_node *dp = op->node;
  52
  53         dp = dp->child;
  54         while (dp) {
  55                 if (!strcmp(dp->name, OBP_PS2KBD_NAME1) ||
  56                     !strcmp(dp->name, OBP_PS2KBD_NAME2)) {
  57                         struct of_device *kbd = of_find_device_by_node(dp);
  58                         unsigned int irq = kbd->irqs[0];
  59                         if (irq == 0xffffffff)
  60                                 irq = op->irqs[0];
  61                         i8042_kbd_irq = irq;
  62                         kbd_iobase = of_ioremap(&kbd->resource[0],
  63                                                 0, 8, "kbd");
  64                         kbd_res = &kbd->resource[0];
  65                 } else if (!strcmp(dp->name, OBP_PS2MS_NAME1) ||
  66                            !strcmp(dp->name, OBP_PS2MS_NAME2)) {
  67                         struct of_device *ms = of_find_device_by_node(dp);
  68                         unsigned int irq = ms->irqs[0];
  69                         if (irq == 0xffffffff)
  70                                 irq = op->irqs[0];
  71                         i8042_aux_irq = irq;
  72                 }
  73
  74                 dp = dp->sibling;
  75         }
  76
  77         return 0;
  78 }
  79
  80 static int __devexit sparc_i8042_remove(struct of_device *op)
  81 {
  82         of_iounmap(kbd_res, kbd_iobase, 8);
  83
  84         return 0;
  85 }
  86
  87 static struct of_device_id sparc_i8042_match[] = {
  88         {
  89                 .name = "8042",
  90         },
  91         {},
  92 };
  93 MODULE_DEVICE_TABLE(of, sparc_i8042_match);
  94
  95 static struct of_platform_driver sparc_i8042_driver = {
  96         .name           = "i8042",
  97         .match_table    = sparc_i8042_match,
  98         .probe          = sparc_i8042_probe,
  99         .remove         = __devexit_p(sparc_i8042_remove),
 100 };
 101
 102 static int __init i8042_platform_init(void)
 103 {
 104 #ifndef CONFIG_PCI
 105         return -ENODEV;
 106 #else
 107         struct device_node *root = of_find_node_by_path("/");
 108
 109         if (!strcmp(root->name, "SUNW,JavaStation-1")) {
 110                 /* Hardcoded values for MrCoffee.  */
 111                 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
 112                 kbd_iobase = ioremap(0x71300060, 8);
 113                 if (!kbd_iobase)
 114                         return -ENODEV;
 115         } else {
 116                 int err = of_register_driver(&sparc_i8042_driver,
 117                                              &of_bus_type);
 118                 if (err)
 119                         return err;
 120
 121                 if (i8042_kbd_irq == -1 ||
 122                     i8042_aux_irq == -1) {
 123                         if (kbd_iobase) {
 124                                 of_iounmap(kbd_res, kbd_iobase, 8);
 125                                 kbd_iobase = (void __iomem *) NULL;
 126                         }
 127                         return -ENODEV;
 128                 }
 129         }
 130
 131         i8042_reset = 1;
 132
 133         return 0;
 134 #endif /* CONFIG_PCI */
 135 }
 136
 137 static inline void i8042_platform_exit(void)
 138 {
 139 #ifdef CONFIG_PCI
 140         struct device_node *root = of_find_node_by_path("/");
 141
 142         if (strcmp(root->name, "SUNW,JavaStation-1"))
 143                 of_unregister_driver(&sparc_i8042_driver);
 144 #endif
 145 }
 146
 147 #endif /* _I8042_SPARCIO_H */