On Sun, May 30, 2010 at 01:35:58PM +0900, Joonyoung Shim wrote:
> >> +static void samsung_kp_timer(unsigned long data)
> >> +{
> >> + struct samsung_kp *keypad = (struct samsung_kp *)data;
> >> +
> >> + schedule_work(&keypad->work);
would schedule_delayed_work() avoid the need for a timer here?
> >> + keypad = kzalloc(sizeof(*keypad), GFP_KERNEL);
> >> + keycodes = kzalloc((pdata->rows << row_shift) * sizeof(*keycodes),
> >> + GFP_KERNEL);
> >
> > you could allocate this in one go.
> >
>
> Hmm, how i do it? Do you mean to allocate keypad and keycodes together?
There's a couple of ways to do this, they may of course be not the nicest
ways.
make the last entry of the first (know size) structure a unsized array.
as so:
struct a {
...
struct b t[];
}
then do
struct a *my_a;
my_a = kzalloc(sizeof(struct a ) + sizeof(struct b) * nr_b);
or by incrementing the pointer:
struct a *my_a;
struct b *my_b;
my_a = kzalloc(sizeof(struct a ) + sizeof(struct b) * nr_b);
my_b = (struct b *)(my_a + 1);
> >> + keypad->clk = clk_get(&pdev->dev, "keypad");
I'm going to get rid of this practice, it should be clk_get(&pdev->dev, NULL),
see up-comming clock changes.
> >> + ret = request_irq(keypad->irq, samsung_kp_interrupt, 0,
> >> + dev_name(&pdev->dev), keypad);
> >> +
> >> + if (ret)
NO PRINT HERE?
> >> + goto err_disable_clk;
> >> +
> >> + input_dev->name = pdev->name;
> >> + input_dev->id.bustype = BUS_HOST;
> >> + input_dev->dev.parent = &pdev->dev;
> >> +
> >> + input_dev->evbit[0] = BIT_MASK(EV_KEY);
> >> + if (pdata->rep)
> >> + input_dev->evbit[0] |= BIT_MASK(EV_REP);
> >> +
> >> + input_dev->keycode = keycodes;
> >> + input_dev->keycodesize = sizeof(*keycodes);
> >> + input_dev->keycodemax = pdata->rows << row_shift;
> >> +
> >> + matrix_keypad_build_keymap(keymap_data, row_shift,
> >> + input_dev->keycode, input_dev->keybit);
> >> +
> >> + ret = input_register_device(keypad->input_dev);
> >> + if (ret)
> >> + goto err_free_irq;
> >> +
> >> + platform_set_drvdata(pdev, keypad);
> >> + clk_disable(keypad->clk);
> >> +
> >> + return 0;
> >> +
> >> +err_free_irq:
> >> + free_irq(keypad->irq, keypad);
> >> +err_disable_clk:
> >> + clk_disable(keypad->clk);
> >> + clk_put(keypad->clk);
> >> +err_unmap_base:
> >> + iounmap(keypad->base);
> >> +err_free_mem:
> >> + input_free_device(input_dev);
> >> + kfree(keycodes);
> >> + kfree(keypad);
> >> +
> >> + return ret;
> >> +}
> >> +
> >> +static int __devexit samsung_kp_remove(struct platform_device *pdev)
> >> +{
> >> + struct samsung_kp *keypad = platform_get_drvdata(pdev);
> >> +
> >> + free_irq(keypad->irq, keypad);
> >> + cancel_work_sync(&keypad->work);
> >> + del_timer_sync(&keypad->timer);
> >> +
> >> + platform_set_drvdata(pdev, NULL);
> >> + input_unregister_device(keypad->input_dev);
> >> +
> >> + clk_disable(keypad->clk);
> >> + clk_put(keypad->clk);
> >> +
> >> + iounmap(keypad->base);
> >> + kfree(keypad->keycodes);
> >> + kfree(keypad);
> >> +
> >> + return 0;
> >> +}
> >> +
> >> +#ifdef CONFIG_PM
> >> +static int samsung_kp_suspend(struct device *dev)
> >> +{
> >> + struct platform_device *pdev = to_platform_device(dev);
> >> + struct samsung_kp *keypad = platform_get_drvdata(pdev);
> >> +
> >> + disable_irq(keypad->irq);
> >> +
> >> + return 0;
> >> +}
> >> +
> >> +static int samsung_kp_resume(struct device pdev)
> >> +{
> >> + struct platform_device *pdev = to_platform_device(dev);
> >> + struct samsung_kp *keypad = platform_get_drvdata(pdev);
> >> + unsigned int val;
> >> +
> >> + clk_enable(keypad->clk);
> >> +
> >> + /* enable interrupt and wakeup bit */
> >> + val = SAMSUNG_INT_F_EN | SAMSUNG_INT_R_EN | SAMSUNG_WAKEUPEN;
> >> + writel(val, keypad->base + SAMSUNG_KEYIFCON);
> >> +
> >> + /* KEYIFCOL reg clear */
> >> + writel(0, keypad->base + SAMSUNG_KEYIFCOL);
> >> +
> >> + enable_irq(keypad->irq);
> >> + clk_disable(keypad->clk);
> >> +
> >> + return 0;
> >> +}
> >> +
> >> +static const struct dev_pm_ops samsung_kp_pm_ops = {
> >> + .suspend = samsung_kp_suspend,
> >> + .resume = samsung_kp_resume,
> >> +};
> >> +#endif
> >> +
> >> +static struct platform_driver samsung_kp_driver = {
> >> + .probe = samsung_kp_probe,
> >> + .remove = __devexit_p(samsung_kp_remove),
> >> + .driver = {
> >> + .name = "samsung-keypad",
> >> + .owner = THIS_MODULE,
> >> +#ifdef CONFIG_PM
> >> + .pm = &samsung_kp_pm_ops,
> >> +#endif
> >> + },
> >> +};
> >> +
> >> +static int __init samsung_kp_init(void)
> >> +{
> >> + return platform_driver_register(&samsung_kp_driver);
> >> +}
> >> +
> >> +static void __exit samsung_kp_exit(void)
> >> +{
> >> + platform_driver_unregister(&samsung_kp_driver);
> >> +}
> >> +
> >> +module_init(samsung_kp_init);
> >> +module_exit(samsung_kp_exit);
> >> +
> >> +MODULE_DESCRIPTION("Samsung keypad driver");
> >> +MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>");
> >> +MODULE_AUTHOR("Donghwa Lee <dh09.lee@xxxxxxxxxxx>");
> >> +MODULE_LICENSE("GPL");
You missed MODULE_ALIAS() for your platform device name
--
Ben
Q: What's a light-year?
A: One-third less calories than a regular year.
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