drivers/input/serio/i8042-sparcio.h

   1 #ifndef _I8042_SPARCIO_H
   2 #define _I8042_SPARCIO_H
   3
   4 #include <linux/config.h>
   5 #include <asm/io.h>
   6 #include <asm/oplib.h>
   7 #include <asm/prom.h>
   8 #include <asm/of_device.h>
   9
  10 static int i8042_kbd_irq = -1;
  11 static int i8042_aux_irq = -1;
  12 #define I8042_KBD_IRQ i8042_kbd_irq
  13 #define I8042_AUX_IRQ i8042_aux_irq
  14
  15 #define I8042_KBD_PHYS_DESC "sparcps2/serio0"
  16 #define I8042_AUX_PHYS_DESC "sparcps2/serio1"
  17 #define I8042_MUX_PHYS_DESC "sparcps2/serio%d"
  18
  19 static void __iomem *kbd_iobase;
  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                 } else if (!strcmp(dp->name, OBP_PS2MS_NAME1) ||
  65                            !strcmp(dp->name, OBP_PS2MS_NAME2)) {
  66                         struct of_device *ms = of_find_device_by_node(dp);
  67                         unsigned int irq = ms->irqs[0];
  68                         if (irq == 0xffffffff)
  69                                 irq = op->irqs[0];
  70                         i8042_aux_irq = irq;
  71                 }
  72
  73                 dp = dp->sibling;
  74         }
  75
  76         return 0;
  77 }
  78
  79 static int __devexit sparc_i8042_remove(struct of_device *op)
  80 {
  81         of_iounmap(kbd_iobase, 8);
  82
  83         return 0;
  84 }
  85
  86 static struct of_device_id sparc_i8042_match[] = {
  87         {
  88                 .name = "8042",
  89         },
  90         {},
  91 };
  92 MODULE_DEVICE_TABLE(of, i8042_match);
  93
  94 static struct of_platform_driver sparc_i8042_driver = {
  95         .name           = "i8042",
  96         .match_table    = sparc_i8042_match,
  97         .probe          = sparc_i8042_probe,
  98         .remove         = __devexit_p(sparc_i8042_remove),
  99 };
 100
 101 static int __init i8042_platform_init(void)
 102 {
 103 #ifndef CONFIG_PCI
 104         return -ENODEV;
 105 #else
 106         struct device_node *root = of_find_node_by_path("/");
 107
 108         if (!strcmp(root->name, "SUNW,JavaStation-1")) {
 109                 /* Hardcoded values for MrCoffee.  */
 110                 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
 111                 kbd_iobase = ioremap(0x71300060, 8);
 112                 if (!kbd_iobase)
 113                         return -ENODEV;
 114         } else {
 115                 int err = of_register_driver(&sparc_i8042_driver,
 116                                              &of_bus_type);
 117                 if (err)
 118                         return err;
 119
 120                 if (i8042_kbd_irq == -1 ||
 121                     i8042_aux_irq == -1) {
 122                         if (kbd_iobase) {
 123                                 of_iounmap(kbd_iobase, 8);
 124                                 kbd_iobase = (void __iomem *) NULL;
 125                         }
 126                         return -ENODEV;
 127                 }
 128         }
 129
 130         i8042_reset = 1;
 131
 132         return 0;
 133 #endif /* CONFIG_PCI */
 134 }
 135
 136 static inline void i8042_platform_exit(void)
 137 {
 138 #ifdef CONFIG_PCI
 139         struct device_node *root = of_find_node_by_path("/");
 140
 141         if (strcmp(root->name, "SUNW,JavaStation-1"))
 142                 of_unregister_driver(&sparc_i8042_driver);
 143 #endif
 144 }
 145
 146 #endif /* _I8042_SPARCIO_H */