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Staging: mrst-touchscreen - register platform interface

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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>
This commit is contained in:
Alek Du 2010-08-31 22:57:30 -07:00 committed by Dmitry Torokhov
parent 95b7127c11
commit 36466a1b45
1 changed files with 35 additions and 33 deletions
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68
drivers/staging/mrst-touchscreen/intel-mid-touch.c
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@ -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 @@ static int mrstouch_nec_adc_read_finish(struct mrstouch_dev *tsdev)
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 @@ static int mrstouch_nec_adc_read(struct mrstouch_dev *tsdev,
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 @@ static int mrstouch_fs_adc_read_prepare(struct mrstouch_dev *tsdev)
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 @@ static int mrstouch_fs_adc_read(struct mrstouch_dev *tsdev,
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 @@ static int mrstouch_fs_adc_read_finish(struct mrstouch_dev *tsdev)
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 @@ static int __devinit mrstouch_adc_init(struct mrstouch_dev *tsdev)
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 @@ static int __devinit mrstouch_adc_init(struct mrstouch_dev *tsdev)
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 @@ static int __devinit mrstouch_adc_init(struct mrstouch_dev *tsdev)
/* 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 @@ static int __devinit mrstouch_probe(struct spi_device *spi)
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 @@ static int __devinit mrstouch_probe(struct spi_device *spi)
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);