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157 lines
3.5 KiB
157 lines
3.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _I8042_SPARCIO_H |
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#define _I8042_SPARCIO_H |
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#include <linux/of_device.h> |
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#include <asm/io.h> |
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#include <asm/oplib.h> |
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#include <asm/prom.h> |
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static int i8042_kbd_irq = -1; |
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static int i8042_aux_irq = -1; |
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#define I8042_KBD_IRQ i8042_kbd_irq |
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#define I8042_AUX_IRQ i8042_aux_irq |
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#define I8042_KBD_PHYS_DESC "sparcps2/serio0" |
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#define I8042_AUX_PHYS_DESC "sparcps2/serio1" |
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#define I8042_MUX_PHYS_DESC "sparcps2/serio%d" |
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static void __iomem *kbd_iobase; |
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#define I8042_COMMAND_REG (kbd_iobase + 0x64UL) |
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#define I8042_DATA_REG (kbd_iobase + 0x60UL) |
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static inline int i8042_read_data(void) |
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{ |
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return readb(kbd_iobase + 0x60UL); |
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} |
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static inline int i8042_read_status(void) |
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{ |
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return readb(kbd_iobase + 0x64UL); |
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} |
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static inline void i8042_write_data(int val) |
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{ |
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writeb(val, kbd_iobase + 0x60UL); |
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} |
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static inline void i8042_write_command(int val) |
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{ |
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writeb(val, kbd_iobase + 0x64UL); |
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} |
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#ifdef CONFIG_PCI |
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static struct resource *kbd_res; |
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#define OBP_PS2KBD_NAME1 "kb_ps2" |
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#define OBP_PS2KBD_NAME2 "keyboard" |
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#define OBP_PS2MS_NAME1 "kdmouse" |
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#define OBP_PS2MS_NAME2 "mouse" |
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static int sparc_i8042_probe(struct platform_device *op) |
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{ |
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struct device_node *dp; |
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for_each_child_of_node(op->dev.of_node, dp) { |
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if (of_node_name_eq(dp, OBP_PS2KBD_NAME1) || |
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of_node_name_eq(dp, OBP_PS2KBD_NAME2)) { |
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struct platform_device *kbd = of_find_device_by_node(dp); |
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unsigned int irq = kbd->archdata.irqs[0]; |
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if (irq == 0xffffffff) |
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irq = op->archdata.irqs[0]; |
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i8042_kbd_irq = irq; |
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kbd_iobase = of_ioremap(&kbd->resource[0], |
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0, 8, "kbd"); |
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kbd_res = &kbd->resource[0]; |
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} else if (of_node_name_eq(dp, OBP_PS2MS_NAME1) || |
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of_node_name_eq(dp, OBP_PS2MS_NAME2)) { |
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struct platform_device *ms = of_find_device_by_node(dp); |
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unsigned int irq = ms->archdata.irqs[0]; |
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if (irq == 0xffffffff) |
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irq = op->archdata.irqs[0]; |
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i8042_aux_irq = irq; |
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} |
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} |
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return 0; |
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} |
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static int sparc_i8042_remove(struct platform_device *op) |
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{ |
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of_iounmap(kbd_res, kbd_iobase, 8); |
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return 0; |
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} |
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static const struct of_device_id sparc_i8042_match[] = { |
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{ |
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.name = "8042", |
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}, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, sparc_i8042_match); |
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static struct platform_driver sparc_i8042_driver = { |
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.driver = { |
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.name = "i8042", |
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.of_match_table = sparc_i8042_match, |
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}, |
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.probe = sparc_i8042_probe, |
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.remove = sparc_i8042_remove, |
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}; |
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static int __init i8042_platform_init(void) |
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{ |
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struct device_node *root = of_find_node_by_path("/"); |
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const char *name = of_get_property(root, "name", NULL); |
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if (name && !strcmp(name, "SUNW,JavaStation-1")) { |
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/* Hardcoded values for MrCoffee. */ |
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i8042_kbd_irq = i8042_aux_irq = 13 | 0x20; |
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kbd_iobase = ioremap(0x71300060, 8); |
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if (!kbd_iobase) |
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return -ENODEV; |
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} else { |
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int err = platform_driver_register(&sparc_i8042_driver); |
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if (err) |
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return err; |
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if (i8042_kbd_irq == -1 || |
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i8042_aux_irq == -1) { |
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if (kbd_iobase) { |
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of_iounmap(kbd_res, kbd_iobase, 8); |
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kbd_iobase = (void __iomem *) NULL; |
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} |
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return -ENODEV; |
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} |
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} |
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i8042_reset = I8042_RESET_ALWAYS; |
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return 0; |
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} |
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static inline void i8042_platform_exit(void) |
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{ |
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struct device_node *root = of_find_node_by_path("/"); |
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const char *name = of_get_property(root, "name", NULL); |
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if (!name || strcmp(name, "SUNW,JavaStation-1")) |
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platform_driver_unregister(&sparc_i8042_driver); |
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} |
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#else /* !CONFIG_PCI */ |
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static int __init i8042_platform_init(void) |
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{ |
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return -ENODEV; |
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} |
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static inline void i8042_platform_exit(void) |
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{ |
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} |
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#endif /* !CONFIG_PCI */ |
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#endif /* _I8042_SPARCIO_H */
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