Hi Sir,
On 8/18/2012 2:26, Shubhrajyoti wrote:
Hi Bo,
On Friday 17 August 2012 03:33 PM, Bo Shen wrote:
This patch enable the qt1070 device tree support
If using device tree, the node of qt1070 looks like
i2c@0 { // this is an example
status = "okay"; // Enable i2c master
qt1070@1b {
compatible = "atmel,qt1070"; // FDT device id
reg = <0x1b>; // qt1070 i2c address
change-gpio = <&pioA 7 1>; // gpio used as interrupt
};
};
Signed-off-by: Bo Shen <voice.s...@atmel.com>
---
drivers/input/keyboard/qt1070.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/input/keyboard/qt1070.c b/drivers/input/keyboard/qt1070.c
index ca68f29..7d656b5 100644
--- a/drivers/input/keyboard/qt1070.c
+++ b/drivers/input/keyboard/qt1070.c
@@ -33,6 +33,8 @@
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
/* Address for each register */
#define CHIP_ID 0x00
@@ -155,6 +157,10 @@ static int __devinit qt1070_probe(struct i2c_client
*client,
return -ENODEV;
}
+ if (client->dev.of_node)
+ client->irq = of_get_named_gpio(client->dev.of_node,
+ "change-gpio", 0);
+
if (!client->irq) {
dev_err(&client->dev, "please assign the irq to this device\n");
return -EINVAL;
@@ -200,9 +206,9 @@ static int __devinit qt1070_probe(struct i2c_client *client,
qt1070_write(client, RESET, 1);
msleep(QT1070_RESET_TIME);
- err = request_threaded_irq(client->irq, NULL, qt1070_interrupt,
- IRQF_TRIGGER_NONE | IRQF_ONESHOT,
- client->dev.driver->name, data);
where is the gpio request done?
Am I missing something?
OK. I will add gpio request.
Thanks.
+ err = request_threaded_irq(gpio_to_irq(client->irq), NULL,
+ qt1070_interrupt, IRQF_TRIGGER_NONE | IRQF_ONESHOT,
+ client->dev.driver->name, data);
if (err) {
dev_err(&client->dev, "fail to request irq\n");
goto err_free_mem;
@@ -243,6 +249,12 @@ static int __devexit qt1070_remove(struct i2c_client
*client)
return 0;
}
+static const struct of_device_id atmel_qt1070_of_match[] = {
+ { .compatible = "atmel,qt1070", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, atmel_qt1070_of_match);
+
static const struct i2c_device_id qt1070_id[] = {
{ "qt1070", 0 },
{ },
@@ -253,6 +265,7 @@ static struct i2c_driver qt1070_driver = {
.driver = {
.name = "qt1070",
.owner = THIS_MODULE,
+ .of_match_table = atmel_qt1070_of_match,
},
.id_table = qt1070_id,
.probe = qt1070_probe,
--
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