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 static struct resource *kbd_res; 21 22 #define I8042_COMMAND_REG (kbd_iobase + 0x64UL) 23 #define I8042_DATA_REG (kbd_iobase + 0x60UL) 24 25 static inline int i8042_read_data(void) 26 { 27 return readb(kbd_iobase + 0x60UL); 28 } 29 30 static inline int i8042_read_status(void) 31 { 32 return readb(kbd_iobase + 0x64UL); 33 } 34 35 static inline void i8042_write_data(int val) 36 { 37 writeb(val, kbd_iobase + 0x60UL); 38 } 39 40 static inline void i8042_write_command(int val) 41 { 42 writeb(val, kbd_iobase + 0x64UL); 43 } 44 45 #ifdef CONFIG_PCI 46 47 #define OBP_PS2KBD_NAME1 "kb_ps2" 48 #define OBP_PS2KBD_NAME2 "keyboard" 49 #define OBP_PS2MS_NAME1 "kdmouse" 50 #define OBP_PS2MS_NAME2 "mouse" 51 52 static int __devinit sparc_i8042_probe(struct of_device *op, const struct of_device_id *match) 53 { 54 struct device_node *dp = op->node; 55 56 dp = dp->child; 57 while (dp) { 58 if (!strcmp(dp->name, OBP_PS2KBD_NAME1) || 59 !strcmp(dp->name, OBP_PS2KBD_NAME2)) { 60 struct of_device *kbd = of_find_device_by_node(dp); 61 unsigned int irq = kbd->irqs[0]; 62 if (irq == 0xffffffff) 63 irq = op->irqs[0]; 64 i8042_kbd_irq = irq; 65 kbd_iobase = of_ioremap(&kbd->resource[0], 66 0, 8, "kbd"); 67 kbd_res = &kbd->resource[0]; 68 } else if (!strcmp(dp->name, OBP_PS2MS_NAME1) || 69 !strcmp(dp->name, OBP_PS2MS_NAME2)) { 70 struct of_device *ms = of_find_device_by_node(dp); 71 unsigned int irq = ms->irqs[0]; 72 if (irq == 0xffffffff) 73 irq = op->irqs[0]; 74 i8042_aux_irq = irq; 75 } 76 77 dp = dp->sibling; 78 } 79 80 return 0; 81 } 82 83 static int __devexit sparc_i8042_remove(struct of_device *op) 84 { 85 of_iounmap(kbd_res, kbd_iobase, 8); 86 87 return 0; 88 } 89 90 static const struct of_device_id sparc_i8042_match[] = { 91 { 92 .name = "8042", 93 }, 94 {}, 95 }; 96 MODULE_DEVICE_TABLE(of, sparc_i8042_match); 97 98 static struct of_platform_driver sparc_i8042_driver = { 99 .name = "i8042", 100 .match_table = sparc_i8042_match, 101 .probe = sparc_i8042_probe, 102 .remove = __devexit_p(sparc_i8042_remove), 103 }; 104 105 static int __init i8042_platform_init(void) 106 { 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 } 135 136 static inline void i8042_platform_exit(void) 137 { 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 } 143 144 #else /* !CONFIG_PCI */ 145 static int __init i8042_platform_init(void) 146 { 147 return -ENODEV; 148 } 149 150 static inline void i8042_platform_exit(void) 151 { 152 } 153 #endif /* !CONFIG_PCI */ 154 155 #endif /* _I8042_SPARCIO_H */ 156