hi,
Iam working on gpio based matrix keypad ( imx6)
Iam sending platform data through device tree (dts) file. But in driver drivers/input/keyboard/matrix_keypad.c ,
static int matrix_keypad_init_gpio(struct platform_device *pdev, struct matrix_keypad *keypad)
{
const struct matrix_keypad_platform_data *pdata = keypad->pdata;
if (pdata->clustered_irq > 0) {
err = request_irq(pdata->clustered_irq,
matrix_keypad_interrupt,
pdata->clustered_irq_flags,
"matrix-keypad", keypad);
if (err) {
dev_err(&pdev->dev,
"Unable to acquire clustered interrupt\n");
goto err_free_rows;
}
}
in probe function, the above function is called and iam not understanding how to pass pdata->clustered_irq in DTS file and their flags and let me know exactly what is pdata->clustered_irq ? ##
Below links are the information about matrix_keypad.
struct matrix_keypad_platform_data
linux-2.6-imx.git - Freescale i.MX Linux Tree
Input: matrix_keypad - add support for clustered irq
clustered_irq may be specified if interrupts of all row/column GPIOs are bundled to one single irq.
To pass the value from DTS to driver, please read the function matrix_keypad_parse_dt()
in the driver. Seems there is no parameter pass from DTS file for clustered_irq. I think you can add one in the driver.