Staging: mrst-touchscreen - register platform interface
AC: Reworked to merge with upstream input device work from Dmitry et al.
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/staging/mrst-touchscreen/intel-mid-touch.c b/drivers/staging/mrst-touchscreen/intel-mid-touch.c
index be7ba7b..9333b9e 100644
--- a/drivers/staging/mrst-touchscreen/intel-mid-touch.c
+++ b/drivers/staging/mrst-touchscreen/intel-mid-touch.c
@@ -32,7 +32,8 @@
#include <linux/interrupt.h>
#include <linux/err.h>
#include <linux/param.h>
-#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <asm/intel_scu_ipc.h>
@@ -94,7 +95,7 @@
/* Touch screen device structure */
struct mrstouch_dev {
- struct spi_device *spi;
+ struct device *dev; /* device associated with touch screen */
struct input_dev *input;
char phys[32];
u16 asr; /* Address selection register */
@@ -162,7 +163,7 @@
if (!pendet_enabled) {
if (++retry >= 10) {
- dev_err(&tsdev->spi->dev,
+ dev_err(tsdev->dev,
"Touch screen disabled.\n");
return -EIO;
}
@@ -282,7 +283,7 @@
return 0;
ipc_error:
- dev_err(&tsdev->spi->dev, "ipc error during adc read\n");
+ dev_err(tsdev->dev, "ipc error during adc read\n");
return err;
}
@@ -341,7 +342,7 @@
return 0;
ipc_error:
- dev_err(&tsdev->spi->dev, "ipc error during %s\n", __func__);
+ dev_err(tsdev->dev, "ipc error during %s\n", __func__);
return err;
}
@@ -387,7 +388,7 @@
return 0;
ipc_error:
- dev_err(&tsdev->spi->dev, "ipc error during %s\n", __func__);
+ dev_err(tsdev->dev, "ipc error during %s\n", __func__);
return err;
}
@@ -428,7 +429,7 @@
return 0;
ipc_error:
- dev_err(&tsdev->spi->dev, "ipc error during %s\n", __func__);
+ dev_err(tsdev->dev, "ipc error during %s\n", __func__);
return err;
}
@@ -560,7 +561,7 @@
err = mrstouch_read_pmic_id(&tsdev->vendor, &tsdev->rev);
if (err) {
- dev_err(&tsdev->spi->dev, "Unable to read PMIC id\n");
+ dev_err(tsdev->dev, "Unable to read PMIC id\n");
return err;
}
@@ -579,14 +580,14 @@
break;
default:
- dev_err(&tsdev->spi->dev,
+ dev_err(tsdev->dev,
"Unsupported touchscreen: %d\n", tsdev->vendor);
return -ENXIO;
}
start = mrstouch_chan_parse(tsdev);
if (start < 0) {
- dev_err(&tsdev->spi->dev, "Unable to parse channels\n");
+ dev_err(tsdev->dev, "Unable to parse channels\n");
return start;
}
@@ -627,41 +628,43 @@
/* Probe function for touch screen driver */
-static int __devinit mrstouch_probe(struct spi_device *spi)
+static int __devinit mrstouch_probe(struct platform_device *pdev)
{
struct mrstouch_dev *tsdev;
struct input_dev *input;
int err;
+ int irq;
- if (!spi->irq) {
- dev_err(&spi->dev, "no interrupt assigned\n");
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "no interrupt assigned\n");
return -EINVAL;
}
tsdev = kzalloc(sizeof(struct mrstouch_dev), GFP_KERNEL);
input = input_allocate_device();
if (!tsdev || !input) {
- dev_err(&spi->dev, "unable to allocate memory\n");
+ dev_err(&pdev->dev, "unable to allocate memory\n");
err = -ENOMEM;
goto err_free_mem;
}
- tsdev->spi = spi;
+ tsdev->dev = &pdev->dev;
tsdev->input = input;
- tsdev->irq = spi->irq;
+ tsdev->irq = irq;
snprintf(tsdev->phys, sizeof(tsdev->phys),
- "%s/input0", dev_name(&spi->dev));
+ "%s/input0", dev_name(tsdev->dev));
err = mrstouch_adc_init(tsdev);
if (err) {
- dev_err(&spi->dev, "ADC initialization failed\n");
+ dev_err(&pdev->dev, "ADC initialization failed\n");
goto err_free_mem;
}
input->name = "mrst_touchscreen";
input->phys = tsdev->phys;
- input->dev.parent = &spi->dev;
+ input->dev.parent = tsdev->dev;
input->id.vendor = tsdev->vendor;
input->id.version = tsdev->rev;
@@ -679,17 +682,17 @@
err = request_threaded_irq(tsdev->irq, NULL, mrstouch_pendet_irq,
0, "mrstouch", tsdev);
if (err) {
- dev_err(&tsdev->spi->dev, "unable to allocate irq\n");
+ dev_err(tsdev->dev, "unable to allocate irq\n");
goto err_free_mem;
}
err = input_register_device(tsdev->input);
if (err) {
- dev_err(&tsdev->spi->dev, "unable to register input device\n");
+ dev_err(tsdev->dev, "unable to register input device\n");
goto err_free_irq;
}
- spi_set_drvdata(spi, tsdev);
+ platform_set_drvdata(pdev, tsdev);
return 0;
err_free_irq:
@@ -700,38 +703,37 @@
return err;
}
-static int __devexit mrstouch_remove(struct spi_device *spi)
+static int __devexit mrstouch_remove(struct platform_device *pdev)
{
- struct mrstouch_dev *tsdev = spi_get_drvdata(spi);
+ struct mrstouch_dev *tsdev = platform_get_drvdata(pdev);
free_irq(tsdev->irq, tsdev);
input_unregister_device(tsdev->input);
kfree(tsdev);
- spi_set_drvdata(spi, NULL);
+ platform_set_drvdata(pdev, NULL);
return 0;
}
-static struct spi_driver mrstouch_driver = {
+static struct platform_driver mrstouch_driver = {
.driver = {
- .name = "pmic_touch",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
+ .name = "pmic_touch",
+ .owner = THIS_MODULE,
},
- .probe = mrstouch_probe,
- .remove = __devexit_p(mrstouch_remove),
+ .probe = mrstouch_probe,
+ .remove = __devexit_p(mrstouch_remove),
};
static int __init mrstouch_init(void)
{
- return spi_register_driver(&mrstouch_driver);
+ return platform_driver_register(&mrstouch_driver);
}
module_init(mrstouch_init);
static void __exit mrstouch_exit(void)
{
- spi_unregister_driver(&mrstouch_driver);
+ platform_driver_unregister(&mrstouch_driver);
}
module_exit(mrstouch_exit);