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