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Commit 829c4f96 authored by Viresh Kumar's avatar Viresh Kumar Committed by Dmitry Torokhov
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Input: spear-keyboard - add device tree bindings



This adds simple DT bindings for spear-keyboard controller.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@st.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent b45c8f35
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+56 −15
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_wakeup.h>
#include <linux/slab.h>
@@ -63,6 +64,7 @@ struct spear_kbd {
	unsigned int mode;
	unsigned short last_key;
	unsigned short keycodes[NUM_ROWS * NUM_COLS];
	bool rep;
};

static irqreturn_t spear_kbd_interrupt(int irq, void *dev_id)
@@ -138,26 +140,48 @@ static void spear_kbd_close(struct input_dev *dev)
	kbd->last_key = KEY_RESERVED;
}

static int __devinit spear_kbd_probe(struct platform_device *pdev)
#ifdef CONFIG_OF
static int __devinit spear_kbd_parse_dt(struct platform_device *pdev,
                                        struct spear_kbd *kbd)
{
	const struct kbd_platform_data *pdata = pdev->dev.platform_data;
	const struct matrix_keymap_data *keymap;
	struct spear_kbd *kbd;
	struct input_dev *input_dev;
	struct resource *res;
	int irq;
	struct device_node *np = pdev->dev.of_node;
	int error;
	u32 val;

	if (!pdata) {
		dev_err(&pdev->dev, "Invalid platform data\n");
	if (!np) {
		dev_err(&pdev->dev, "Missing DT data\n");
		return -EINVAL;
	}

	keymap = pdata->keymap;
	if (!keymap) {
		dev_err(&pdev->dev, "no keymap defined\n");
		return -EINVAL;
	if (of_property_read_bool(np, "autorepeat"))
		kbd->rep = true;

	error = of_property_read_u32(np, "st,mode", &val);
	if (error) {
		dev_err(&pdev->dev, "DT: Invalid or missing mode\n");
		return error;
	}

	kbd->mode = val;
	return 0;
}
#else
static inline int spear_kbd_parse_dt(struct platform_device *pdev,
				     struct spear_kbd *kbd)
{
	return -ENOSYS;
}
#endif

static int __devinit spear_kbd_probe(struct platform_device *pdev)
{
	struct kbd_platform_data *pdata = dev_get_platdata(&pdev->dev);
	const struct matrix_keymap_data *keymap = pdata ? pdata->keymap : NULL;
	struct spear_kbd *kbd;
	struct input_dev *input_dev;
	struct resource *res;
	int irq;
	int error;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
@@ -181,7 +205,15 @@ static int __devinit spear_kbd_probe(struct platform_device *pdev)

	kbd->input = input_dev;
	kbd->irq = irq;

	if (!pdata) {
		error = spear_kbd_parse_dt(pdev, kbd);
		if (error)
			goto err_free_mem;
	} else {
		kbd->mode = pdata->mode;
		kbd->rep = pdata->rep;
	}

	kbd->res = request_mem_region(res->start, resource_size(res),
				      pdev->name);
@@ -221,7 +253,7 @@ static int __devinit spear_kbd_probe(struct platform_device *pdev)
		goto err_put_clk;
	}

	if (pdata->rep)
	if (kbd->rep)
		__set_bit(EV_REP, input_dev->evbit);
	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

@@ -318,6 +350,14 @@ static int spear_kbd_resume(struct device *dev)

static SIMPLE_DEV_PM_OPS(spear_kbd_pm_ops, spear_kbd_suspend, spear_kbd_resume);

#ifdef CONFIG_OF
static const struct of_device_id spear_kbd_id_table[] = {
	{ .compatible = "st,spear300-kbd" },
	{}
};
MODULE_DEVICE_TABLE(of, spear_kbd_id_table);
#endif

static struct platform_driver spear_kbd_driver = {
	.probe		= spear_kbd_probe,
	.remove		= __devexit_p(spear_kbd_remove),
@@ -325,6 +365,7 @@ static struct platform_driver spear_kbd_driver = {
		.name	= "keyboard",
		.owner	= THIS_MODULE,
		.pm	= &spear_kbd_pm_ops,
		.of_match_table = of_match_ptr(spear_kbd_id_table),
	},
};
module_platform_driver(spear_kbd_driver);