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 .owner = THIS_MODULE, 103 .of_match_table = sparc_i8042_match, 104 }, 105 .probe = sparc_i8042_probe, 106 .remove = sparc_i8042_remove, 107 }; 108 109 static int __init i8042_platform_init(void) 110 { 111 struct device_node *root = of_find_node_by_path("/"); 112 113 if (!strcmp(root->name, "SUNW,JavaStation-1")) { 114 /* Hardcoded values for MrCoffee. */ 115 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20; 116 kbd_iobase = ioremap(0x71300060, 8); 117 if (!kbd_iobase) 118 return -ENODEV; 119 } else { 120 int err = platform_driver_register(&sparc_i8042_driver); 121 if (err) 122 return err; 123 124 if (i8042_kbd_irq == -1 || 125 i8042_aux_irq == -1) { 126 if (kbd_iobase) { 127 of_iounmap(kbd_res, kbd_iobase, 8); 128 kbd_iobase = (void __iomem *) NULL; 129 } 130 return -ENODEV; 131 } 132 } 133 134 i8042_reset = 1; 135 136 return 0; 137 } 138 139 static inline void i8042_platform_exit(void) 140 { 141 struct device_node *root = of_find_node_by_path("/"); 142 143 if (strcmp(root->name, "SUNW,JavaStation-1")) 144 platform_driver_unregister(&sparc_i8042_driver); 145 } 146 147 #else /* !CONFIG_PCI */ 148 static int __init i8042_platform_init(void) 149 { 150 return -ENODEV; 151 } 152 153 static inline void i8042_platform_exit(void) 154 { 155 } 156 #endif /* !CONFIG_PCI */ 157 158 #endif /* _I8042_SPARCIO_H */ 159