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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/drivers/input/serio/i8042-sparcio.h
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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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static struct resource *kbd_res;

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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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#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 __devinit sparc_i8042_probe(struct platform_device *op)

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{

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	struct device_node *dp = op->dev.of_node;

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	dp = dp->child;

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	while (dp) {

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		if (!strcmp(dp->name, OBP_PS2KBD_NAME1) ||

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		    !strcmp(dp->name, 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 (!strcmp(dp->name, OBP_PS2MS_NAME1) ||

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			   !strcmp(dp->name, 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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		dp = dp->sibling;

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	}

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	return 0;

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}

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static int __devexit 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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		.owner = THIS_MODULE,

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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		= __devexit_p(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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	if (!strcmp(root->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 = 1;

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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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	if (strcmp(root->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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