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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: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell
Greg Kroah-Hartman
parent
0c868461fc
commit
2e5a7bd978
@ -345,19 +345,15 @@ static irqreturn_t ads7846_irq(int irq, void *handle, struct pt_regs *regs)
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/*--------------------------------------------------------------------------*/
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/* non-empty "extra" is needed before 2.6.14-git5 or so */
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#define EXTRA // , u32 level
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#define EXTRA2 // , 0
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static int
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ads7846_suspend(struct device *dev, pm_message_t message EXTRA)
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ads7846_suspend(struct spi_device *spi, pm_message_t message)
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{
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struct ads7846 *ts = dev_get_drvdata(dev);
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struct ads7846 *ts = dev_get_drvdata(&spi->dev);
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unsigned long flags;
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spin_lock_irqsave(&ts->lock, flags);
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ts->spi->dev.power.power_state = message;
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spi->dev.power.power_state = message;
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/* are we waiting for IRQ, or polling? */
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if (!ts->pendown) {
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@ -387,36 +383,35 @@ ads7846_suspend(struct device *dev, pm_message_t message EXTRA)
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return 0;
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}
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static int ads7846_resume(struct device *dev EXTRA)
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static int ads7846_resume(struct spi_device *spi)
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{
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struct ads7846 *ts = dev_get_drvdata(dev);
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struct ads7846 *ts = dev_get_drvdata(&spi->dev);
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ts->irq_disabled = 0;
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enable_irq(ts->spi->irq);
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dev->power.power_state = PMSG_ON;
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spi->dev.power.power_state = PMSG_ON;
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return 0;
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}
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static int __init ads7846_probe(struct device *dev)
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static int __devinit ads7846_probe(struct spi_device *spi)
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{
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struct spi_device *spi = to_spi_device(dev);
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struct ads7846 *ts;
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struct ads7846_platform_data *pdata = dev->platform_data;
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struct ads7846_platform_data *pdata = spi->dev.platform_data;
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struct spi_transfer *x;
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if (!spi->irq) {
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dev_dbg(dev, "no IRQ?\n");
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dev_dbg(&spi->dev, "no IRQ?\n");
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return -ENODEV;
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}
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if (!pdata) {
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dev_dbg(dev, "no platform data?\n");
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dev_dbg(&spi->dev, "no platform data?\n");
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return -ENODEV;
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}
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/* don't exceed max specified sample rate */
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if (spi->max_speed_hz > (125000 * 16)) {
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dev_dbg(dev, "f(sample) %d KHz?\n",
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dev_dbg(&spi->dev, "f(sample) %d KHz?\n",
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(spi->max_speed_hz/16)/1000);
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return -EINVAL;
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}
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@ -430,7 +425,7 @@ static int __init ads7846_probe(struct device *dev)
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if (!(ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL)))
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return -ENOMEM;
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dev_set_drvdata(dev, ts);
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dev_set_drvdata(&spi->dev, ts);
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ts->spi = spi;
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spi->dev.power.power_state = PMSG_ON;
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@ -445,9 +440,9 @@ static int __init ads7846_probe(struct device *dev)
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init_input_dev(&ts->input);
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ts->input.dev = dev;
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ts->input.dev = &spi->dev;
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ts->input.name = "ADS784x Touchscreen";
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snprintf(ts->phys, sizeof ts->phys, "%s/input0", dev->bus_id);
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snprintf(ts->phys, sizeof ts->phys, "%s/input0", spi->dev.bus_id);
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ts->input.phys = ts->phys;
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ts->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
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@ -511,65 +506,68 @@ static int __init ads7846_probe(struct device *dev)
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ts->msg.context = ts;
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if (request_irq(spi->irq, ads7846_irq, SA_SAMPLE_RANDOM,
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dev->bus_id, ts)) {
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dev_dbg(dev, "irq %d busy?\n", spi->irq);
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spi->dev.bus_id, ts)) {
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dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);
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input_unregister_device(&ts->input);
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kfree(ts);
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return -EBUSY;
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}
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set_irq_type(spi->irq, IRQT_FALLING);
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dev_info(dev, "touchscreen, irq %d\n", spi->irq);
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dev_info(&spi->dev, "touchscreen, irq %d\n", spi->irq);
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/* take a first sample, leaving nPENIRQ active; avoid
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* the touchscreen, in case it's not connected.
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*/
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(void) ads7846_read12_ser(dev,
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(void) ads7846_read12_ser(&spi->dev,
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READ_12BIT_SER(vaux) | ADS_PD10_ALL_ON);
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/* ads7843/7845 don't have temperature sensors, and
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* use the other sensors a bit differently too
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*/
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if (ts->model == 7846) {
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device_create_file(dev, &dev_attr_temp0);
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device_create_file(dev, &dev_attr_temp1);
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device_create_file(&spi->dev, &dev_attr_temp0);
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device_create_file(&spi->dev, &dev_attr_temp1);
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}
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if (ts->model != 7845)
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device_create_file(dev, &dev_attr_vbatt);
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device_create_file(dev, &dev_attr_vaux);
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device_create_file(&spi->dev, &dev_attr_vbatt);
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device_create_file(&spi->dev, &dev_attr_vaux);
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return 0;
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}
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static int __exit ads7846_remove(struct device *dev)
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static int __devexit ads7846_remove(struct spi_device *spi)
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{
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struct ads7846 *ts = dev_get_drvdata(dev);
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struct ads7846 *ts = dev_get_drvdata(&spi->dev);
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ads7846_suspend(dev, PMSG_SUSPEND EXTRA2);
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ads7846_suspend(spi, PMSG_SUSPEND);
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free_irq(ts->spi->irq, ts);
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if (ts->irq_disabled)
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enable_irq(ts->spi->irq);
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if (ts->model == 7846) {
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device_remove_file(dev, &dev_attr_temp0);
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device_remove_file(dev, &dev_attr_temp1);
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device_remove_file(&spi->dev, &dev_attr_temp0);
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device_remove_file(&spi->dev, &dev_attr_temp1);
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}
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if (ts->model != 7845)
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device_remove_file(dev, &dev_attr_vbatt);
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device_remove_file(dev, &dev_attr_vaux);
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device_remove_file(&spi->dev, &dev_attr_vbatt);
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device_remove_file(&spi->dev, &dev_attr_vaux);
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input_unregister_device(&ts->input);
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kfree(ts);
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dev_dbg(dev, "unregistered touchscreen\n");
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dev_dbg(&spi->dev, "unregistered touchscreen\n");
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return 0;
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}
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static struct device_driver ads7846_driver = {
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.name = "ads7846",
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.bus = &spi_bus_type,
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static struct spi_driver ads7846_driver = {
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.driver = {
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.name = "ads7846",
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.bus = &spi_bus_type,
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.owner = THIS_MODULE,
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},
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.probe = ads7846_probe,
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.remove = __exit_p(ads7846_remove),
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.remove = __devexit_p(ads7846_remove),
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.suspend = ads7846_suspend,
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.resume = ads7846_resume,
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};
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@ -594,18 +592,20 @@ static int __init ads7846_init(void)
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// PXA:
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// also Dell Axim X50
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// also HP iPaq H191x/H192x/H415x/H435x
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// also Intel Lubbock (alternate to UCB1400)
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// also Intel Lubbock (additional to UCB1400; as temperature sensor)
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// also Sharp Zaurus C7xx, C8xx (corgi/sheperd/husky)
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// Atmel at91sam9261-EK uses ads7843
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// also various AMD Au1x00 devel boards
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return driver_register(&ads7846_driver);
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return spi_register_driver(&ads7846_driver);
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}
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module_init(ads7846_init);
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static void __exit ads7846_exit(void)
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{
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driver_unregister(&ads7846_driver);
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spi_unregister_driver(&ads7846_driver);
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#ifdef CONFIG_ARCH_OMAP
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if (machine_is_omap_osk()) {
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@ -1,7 +1,7 @@
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/* linux/spi/ads7846.h */
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/* Touchscreen characteristics vary between boards and models. The
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* platform_data for the device's "struct device" holts this information.
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* platform_data for the device's "struct device" holds this information.
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*
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* It's OK if the min/max values are zero.
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*/
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