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Commit 2e5a7bd9 authored by David Brownell's avatar David Brownell Committed by Greg Kroah-Hartman
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[PATCH] spi: ads7836 uses spi_driver 

This updates the ads7864 driver to use the new "spi_driver" struct, and
includes some minor unrelated cleanup.
Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0c868461
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Showing with 43 additions and 43 deletions
drivers/input/touchscreen/ads7846.c
View file @ 2e5a7bd9
...@@ -345,19 +345,15 @@ static irqreturn_t ads7846_irq(int irq, void *handle, struct pt_regs *regs) ...@@ -345,19 +345,15 @@ static irqreturn_t ads7846_irq(int irq, void *handle, struct pt_regs *regs)
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
/* non-empty "extra" is needed before 2.6.14-git5 or so */
#define EXTRA // , u32 level
#define EXTRA2 // , 0
static int static int
ads7846_suspend(struct device *dev, pm_message_t message EXTRA) ads7846_suspend(struct spi_device *spi, pm_message_t message)
{ {
struct ads7846 *ts = dev_get_drvdata(dev); struct ads7846 *ts = dev_get_drvdata(&spi->dev);
unsigned long flags; unsigned long flags;
spin_lock_irqsave(&ts->lock, flags); spin_lock_irqsave(&ts->lock, flags);
ts->spi->dev.power.power_state = message; spi->dev.power.power_state = message;
/* are we waiting for IRQ, or polling? */ /* are we waiting for IRQ, or polling? */
if (!ts->pendown) { if (!ts->pendown) {
...@@ -387,36 +383,35 @@ ads7846_suspend(struct device *dev, pm_message_t message EXTRA) ...@@ -387,36 +383,35 @@ ads7846_suspend(struct device *dev, pm_message_t message EXTRA)
return 0; return 0;
} }
static int ads7846_resume(struct device *dev EXTRA) static int ads7846_resume(struct spi_device *spi)
{ {
struct ads7846 *ts = dev_get_drvdata(dev); struct ads7846 *ts = dev_get_drvdata(&spi->dev);
ts->irq_disabled = 0; ts->irq_disabled = 0;
enable_irq(ts->spi->irq); enable_irq(ts->spi->irq);
dev->power.power_state = PMSG_ON; spi->dev.power.power_state = PMSG_ON;
return 0; return 0;
} }
static int __init ads7846_probe(struct device *dev) static int __devinit ads7846_probe(struct spi_device *spi)
{ {
struct spi_device *spi = to_spi_device(dev);
struct ads7846 *ts; struct ads7846 *ts;
struct ads7846_platform_data *pdata = dev->platform_data; struct ads7846_platform_data *pdata = spi->dev.platform_data;
struct spi_transfer *x; struct spi_transfer *x;
if (!spi->irq) { if (!spi->irq) {
dev_dbg(dev, "no IRQ?\n"); dev_dbg(&spi->dev, "no IRQ?\n");
return -ENODEV; return -ENODEV;
} }
if (!pdata) { if (!pdata) {
dev_dbg(dev, "no platform data?\n"); dev_dbg(&spi->dev, "no platform data?\n");
return -ENODEV; return -ENODEV;
} }
/* don't exceed max specified sample rate */ /* don't exceed max specified sample rate */
if (spi->max_speed_hz > (125000 * 16)) { if (spi->max_speed_hz > (125000 * 16)) {
dev_dbg(dev, "f(sample) %d KHz?\n", dev_dbg(&spi->dev, "f(sample) %d KHz?\n",
(spi->max_speed_hz/16)/1000); (spi->max_speed_hz/16)/1000);
return -EINVAL; return -EINVAL;
} }
...@@ -430,7 +425,7 @@ static int __init ads7846_probe(struct device *dev) ...@@ -430,7 +425,7 @@ static int __init ads7846_probe(struct device *dev)
if (!(ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL))) if (!(ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL)))
return -ENOMEM; return -ENOMEM;
dev_set_drvdata(dev, ts); dev_set_drvdata(&spi->dev, ts);
ts->spi = spi; ts->spi = spi;
spi->dev.power.power_state = PMSG_ON; spi->dev.power.power_state = PMSG_ON;
...@@ -445,9 +440,9 @@ static int __init ads7846_probe(struct device *dev) ...@@ -445,9 +440,9 @@ static int __init ads7846_probe(struct device *dev)
init_input_dev(&ts->input); init_input_dev(&ts->input);
ts->input.dev = dev; ts->input.dev = &spi->dev;
ts->input.name = "ADS784x Touchscreen"; ts->input.name = "ADS784x Touchscreen";
snprintf(ts->phys, sizeof ts->phys, "%s/input0", dev->bus_id); snprintf(ts->phys, sizeof ts->phys, "%s/input0", spi->dev.bus_id);
ts->input.phys = ts->phys; ts->input.phys = ts->phys;
ts->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); ts->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
...@@ -511,65 +506,68 @@ static int __init ads7846_probe(struct device *dev) ...@@ -511,65 +506,68 @@ static int __init ads7846_probe(struct device *dev)
ts->msg.context = ts; ts->msg.context = ts;
if (request_irq(spi->irq, ads7846_irq, SA_SAMPLE_RANDOM, if (request_irq(spi->irq, ads7846_irq, SA_SAMPLE_RANDOM,
dev->bus_id, ts)) { spi->dev.bus_id, ts)) {
dev_dbg(dev, "irq %d busy?\n", spi->irq); dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);
input_unregister_device(&ts->input); input_unregister_device(&ts->input);
kfree(ts); kfree(ts);
return -EBUSY; return -EBUSY;
} }
set_irq_type(spi->irq, IRQT_FALLING); set_irq_type(spi->irq, IRQT_FALLING);
dev_info(dev, "touchscreen, irq %d\n", spi->irq); dev_info(&spi->dev, "touchscreen, irq %d\n", spi->irq);
/* take a first sample, leaving nPENIRQ active; avoid /* take a first sample, leaving nPENIRQ active; avoid
* the touchscreen, in case it's not connected. * the touchscreen, in case it's not connected.
*/ */
(void) ads7846_read12_ser(dev, (void) ads7846_read12_ser(&spi->dev,
READ_12BIT_SER(vaux) | ADS_PD10_ALL_ON); READ_12BIT_SER(vaux) | ADS_PD10_ALL_ON);
/* ads7843/7845 don't have temperature sensors, and /* ads7843/7845 don't have temperature sensors, and
* use the other sensors a bit differently too * use the other sensors a bit differently too
*/ */
if (ts->model == 7846) { if (ts->model == 7846) {
device_create_file(dev, &dev_attr_temp0); device_create_file(&spi->dev, &dev_attr_temp0);
device_create_file(dev, &dev_attr_temp1); device_create_file(&spi->dev, &dev_attr_temp1);
} }
if (ts->model != 7845) if (ts->model != 7845)
device_create_file(dev, &dev_attr_vbatt); device_create_file(&spi->dev, &dev_attr_vbatt);
device_create_file(dev, &dev_attr_vaux); device_create_file(&spi->dev, &dev_attr_vaux);
return 0; return 0;
} }
static int __exit ads7846_remove(struct device *dev) static int __devexit ads7846_remove(struct spi_device *spi)
{ {
struct ads7846 *ts = dev_get_drvdata(dev); struct ads7846 *ts = dev_get_drvdata(&spi->dev);
ads7846_suspend(dev, PMSG_SUSPEND EXTRA2); ads7846_suspend(spi, PMSG_SUSPEND);
free_irq(ts->spi->irq, ts); free_irq(ts->spi->irq, ts);
if (ts->irq_disabled) if (ts->irq_disabled)
enable_irq(ts->spi->irq); enable_irq(ts->spi->irq);
if (ts->model == 7846) { if (ts->model == 7846) {
device_remove_file(dev, &dev_attr_temp0); device_remove_file(&spi->dev, &dev_attr_temp0);
device_remove_file(dev, &dev_attr_temp1); device_remove_file(&spi->dev, &dev_attr_temp1);
} }
if (ts->model != 7845) if (ts->model != 7845)
device_remove_file(dev, &dev_attr_vbatt); device_remove_file(&spi->dev, &dev_attr_vbatt);
device_remove_file(dev, &dev_attr_vaux); device_remove_file(&spi->dev, &dev_attr_vaux);
input_unregister_device(&ts->input); input_unregister_device(&ts->input);
kfree(ts); kfree(ts);
dev_dbg(dev, "unregistered touchscreen\n"); dev_dbg(&spi->dev, "unregistered touchscreen\n");
return 0; return 0;
} }
static struct device_driver ads7846_driver = { static struct spi_driver ads7846_driver = {
.name = "ads7846", .driver = {
.bus = &spi_bus_type, .name = "ads7846",
.bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = ads7846_probe, .probe = ads7846_probe,
.remove = __exit_p(ads7846_remove), .remove = __devexit_p(ads7846_remove),
.suspend = ads7846_suspend, .suspend = ads7846_suspend,
.resume = ads7846_resume, .resume = ads7846_resume,
}; };
...@@ -594,18 +592,20 @@ static int __init ads7846_init(void) ...@@ -594,18 +592,20 @@ static int __init ads7846_init(void)
// PXA: // PXA:
// also Dell Axim X50 // also Dell Axim X50
// also HP iPaq H191x/H192x/H415x/H435x // also HP iPaq H191x/H192x/H415x/H435x
// also Intel Lubbock (alternate to UCB1400) // also Intel Lubbock (additional to UCB1400; as temperature sensor)
// also Sharp Zaurus C7xx, C8xx (corgi/sheperd/husky) // also Sharp Zaurus C7xx, C8xx (corgi/sheperd/husky)
// Atmel at91sam9261-EK uses ads7843
// also various AMD Au1x00 devel boards // also various AMD Au1x00 devel boards
return driver_register(&ads7846_driver); return spi_register_driver(&ads7846_driver);
} }
module_init(ads7846_init); module_init(ads7846_init);
static void __exit ads7846_exit(void) static void __exit ads7846_exit(void)
{ {
driver_unregister(&ads7846_driver); spi_unregister_driver(&ads7846_driver);
#ifdef CONFIG_ARCH_OMAP #ifdef CONFIG_ARCH_OMAP
if (machine_is_omap_osk()) { if (machine_is_omap_osk()) {
......
include/linux/spi/ads7846.h
View file @ 2e5a7bd9
/* linux/spi/ads7846.h */ /* linux/spi/ads7846.h */
/* Touchscreen characteristics vary between boards and models. The /* Touchscreen characteristics vary between boards and models. The
* platform_data for the device's "struct device" holts this information. * platform_data for the device's "struct device" holds this information.
* *
* It's OK if the min/max values are zero. * It's OK if the min/max values are zero.
*/ */
......
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