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Input: spear-keyboard - add device tree bindings

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This adds simple DT bindings for spear-keyboard controller.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Viresh Kumar 2012-05-10 22:37:16 -07:00 committed by Dmitry Torokhov
parent b45c8f35a7
commit 829c4f9690
1 changed files with 56 additions and 15 deletions
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71
drivers/input/keyboard/spear-keyboard.c
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@ -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)
@ -138,27 +140,49 @@ static void spear_kbd_close(struct input_dev *dev)
kbd->last_key = KEY_RESERVED;
}
#ifdef CONFIG_OF
static int __devinit spear_kbd_parse_dt(struct platform_device *pdev,
struct spear_kbd *kbd)
{
struct device_node *np = pdev->dev.of_node;
int error;
u32 val;
if (!np) {
dev_err(&pdev->dev, "Missing DT data\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)
{
const struct kbd_platform_data *pdata = pdev->dev.platform_data;
const struct matrix_keymap_data *keymap;
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;
if (!pdata) {
dev_err(&pdev->dev, "Invalid platform data\n");
return -EINVAL;
}
keymap = pdata->keymap;
if (!keymap) {
dev_err(&pdev->dev, "no keymap defined\n");
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "no keyboard resource defined\n");
@ -181,7 +205,15 @@ static int __devinit spear_kbd_probe(struct platform_device *pdev)
kbd->input = input_dev;
kbd->irq = irq;
kbd->mode = pdata->mode;
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);