kernel/drivers/input/serio/i8042-sparcio.h

   1 #ifndef _I8042_SPARCIO_H
   2 #define _I8042_SPARCIO_H
   3
   4 #include <linux/of_device.h>
   5
   6 #include <asm/io.h>
   7 #include <asm/oplib.h>
   8 #include <asm/prom.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 #ifdef CONFIG_PCI
  45
  46 static struct resource *kbd_res;
  47
  48 #define OBP_PS2KBD_NAME1        "kb_ps2"
  49 #define OBP_PS2KBD_NAME2        "keyboard"
  50 #define OBP_PS2MS_NAME1         "kdmouse"
  51 #define OBP_PS2MS_NAME2         "mouse"
  52
  53 static int sparc_i8042_probe(struct platform_device *op)
  54 {
  55         struct device_node *dp = op->dev.of_node;
  56
  57         dp = dp->child;
  58         while (dp) {
  59                 if (!strcmp(dp->name, OBP_PS2KBD_NAME1) ||
  60                     !strcmp(dp->name, OBP_PS2KBD_NAME2)) {
  61                         struct platform_device *kbd = of_find_device_by_node(dp);
  62                         unsigned int irq = kbd->archdata.irqs[0];
  63                         if (irq == 0xffffffff)
  64                                 irq = op->archdata.irqs[0];
  65                         i8042_kbd_irq = irq;
  66                         kbd_iobase = of_ioremap(&kbd->resource[0],
  67                                                 0, 8, "kbd");
  68                         kbd_res = &kbd->resource[0];
  69                 } else if (!strcmp(dp->name, OBP_PS2MS_NAME1) ||
  70                            !strcmp(dp->name, OBP_PS2MS_NAME2)) {
  71                         struct platform_device *ms = of_find_device_by_node(dp);
  72                         unsigned int irq = ms->archdata.irqs[0];
  73                         if (irq == 0xffffffff)
  74                                 irq = op->archdata.irqs[0];
  75                         i8042_aux_irq = irq;
  76                 }
  77
  78                 dp = dp->sibling;
  79         }
  80
  81         return 0;
  82 }
  83
  84 static int sparc_i8042_remove(struct platform_device *op)
  85 {
  86         of_iounmap(kbd_res, kbd_iobase, 8);
  87
  88         return 0;
  89 }
  90
  91 static const struct of_device_id sparc_i8042_match[] = {
  92         {
  93                 .name = "8042",
  94         },
  95         {},
  96 };
  97 MODULE_DEVICE_TABLE(of, sparc_i8042_match);
  98
  99 static struct platform_driver sparc_i8042_driver = {
 100         .driver = {
 101                 .name = "i8042",
 102                 .of_match_table = sparc_i8042_match,
 103         },
 104         .probe          = sparc_i8042_probe,
 105         .remove         = sparc_i8042_remove,
 106 };
 107
 108 static int __init i8042_platform_init(void)
 109 {
 110         struct device_node *root = of_find_node_by_path("/");
 111
 112         if (!strcmp(root->name, "SUNW,JavaStation-1")) {
 113                 /* Hardcoded values for MrCoffee.  */
 114                 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
 115                 kbd_iobase = ioremap(0x71300060, 8);
 116                 if (!kbd_iobase)
 117                         return -ENODEV;
 118         } else {
 119                 int err = platform_driver_register(&sparc_i8042_driver);
 120                 if (err)
 121                         return err;
 122
 123                 if (i8042_kbd_irq == -1 ||
 124                     i8042_aux_irq == -1) {
 125                         if (kbd_iobase) {
 126                                 of_iounmap(kbd_res, kbd_iobase, 8);
 127                                 kbd_iobase = (void __iomem *) NULL;
 128                         }
 129                         return -ENODEV;
 130                 }
 131         }
 132
 133         i8042_reset = 1;
 134
 135         return 0;
 136 }
 137
 138 static inline void i8042_platform_exit(void)
 139 {
 140         struct device_node *root = of_find_node_by_path("/");
 141
 142         if (strcmp(root->name, "SUNW,JavaStation-1"))
 143                 platform_driver_unregister(&sparc_i8042_driver);
 144 }
 145
 146 #else /* !CONFIG_PCI */
 147 static int __init i8042_platform_init(void)
 148 {
 149         return -ENODEV;
 150 }
 151
 152 static inline void i8042_platform_exit(void)
 153 {
 154 }
 155 #endif /* !CONFIG_PCI */
 156
 157 #endif /* _I8042_SPARCIO_H */