static int rmi_irq_thread(void *p)
{
struct rmi_i2c_data *data = p;
struct rmi_phys_device *phys = data->phys;
struct rmi_device_platform_data *pdata = phys->dev->platform_data;
static const struct sched_param param = {
.sched_priority = MAX_USER_RT_PRIO/2,
};
sched_setscheduler(current, SCHED_FIFO, ¶m);
while (!kthread_should_stop()){
set_current_state(TASK_INTERRUPTIBLE);
if (test_and_clear_bit(RMI_IRQ_WAKED,&rmi_irq_flag)) {
set_current_state(TASK_RUNNING);
rmi_i2c_irq_thread(data->irq, data->phys);
enable_irq(data->irq);
}
else
schedule();
}
return 0;
}
static int acquire_attn_irq(struct rmi_i2c_data *data)
{
return request_threaded_irq(data->irq, rmi_irq_handler_process, NULL,
data->irq_flags, dev_name(data->phys->dev), data->phys);
}
static int enable_device(struct rmi_phys_device *phys)
{
int retval = 0;
struct rmi_i2c_data *data = phys->data;
if (data->enabled)
return 0;
retval = acquire_attn_irq(data);
if (retval)
goto error_exit;
data->enabled = true;
dev_dbg(phys->dev, "Physical device enabled.\n");
return 0;
error_exit:
dev_err(phys->dev, "Failed to enable physical device. Code=%d.\n",
retval);
return retval;
}
static int enable_device(struct rmi_phys_device *phys)
{
int retval = 0;
struct rmi_i2c_data *data = phys->data;
if (data->enabled)
return 0;
retval = acquire_attn_irq(data);
if (retval)
goto error_exit;
data->enabled = true;
dev_dbg(phys->dev, "Physical device enabled.\n");
return 0;
error_exit:
printk( "ITUCH : Device(%s) failed to enable physical device(%d)\n", dev_name( phys->dev ), retval );
return retval;
}
static int enable_device(struct rmi_phys_device *phys)
{
int retval = 0;
struct rmi_i2c_data *data = phys->data;
if (data->enabled)
return 0;
retval = acquire_attn_irq(data);
if (retval)
goto error_exit;
data->enabled = true;
dev_dbg(phys->dev, "Physical device enabled.\n");
return 0;
error_exit:
dev_err(phys->dev, "Failed to enable physical device. Code=%d.\n",
retval);
return retval;
}
static int __devinit rmi_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct rmi_phys_device *rmi_phys;
struct rmi_i2c_data *data;
struct rmi_device_platform_data *pdata = client->dev.platform_data;
int error;
if (!pdata) {
dev_err(&client->dev, "no platform data\n");
return -EINVAL;
}
pr_info("%s: Probing %s at %#02x (IRQ %d).\n", __func__,
pdata->sensor_name ? pdata->sensor_name : "-no name-",
client->addr, pdata->attn_gpio);
error = i2c_check_functionality(client->adapter, I2C_FUNC_I2C);
if (!error) {
dev_err(&client->dev, "i2c_check_functionality error %d.\n",
error);
return error;
}
rmi_phys = kzalloc(sizeof(struct rmi_phys_device), GFP_KERNEL);
if (!rmi_phys)
return -ENOMEM;
data = kzalloc(sizeof(struct rmi_i2c_data), GFP_KERNEL);
if (!data) {
error = -ENOMEM;
goto err_phys;
}
data->enabled = true; /* We plan to come up enabled. */
data->irq = gpio_to_irq(pdata->attn_gpio);
data->irq_flags = (pdata->attn_polarity == RMI_ATTN_ACTIVE_HIGH) ?
IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING;
data->phys = rmi_phys;
rmi_phys->data = data;
rmi_phys->dev = &client->dev;
rmi_phys->write = rmi_i2c_write;
rmi_phys->write_block = rmi_i2c_write_block;
rmi_phys->read = rmi_i2c_read;
rmi_phys->read_block = rmi_i2c_read_block;
rmi_phys->enable_device = enable_device;
rmi_phys->disable_device = disable_device;
rmi_phys->info.proto = phys_proto_name;
mutex_init(&data->page_mutex);
mdelay(1000);
/* Setting the page to zero will (a) make sure the PSR is in a
* known state, and (b) make sure we can talk to the device.
*/
error = rmi_set_page(rmi_phys, 0);
if (error) {
dev_err(&client->dev, "Failed to set page select to 0.\n");
goto err_data;
}
if (pdata->gpio_config) {
error = pdata->gpio_config(pdata->gpio_data, true);
if (error < 0) {
dev_err(&client->dev, "failed to setup irq %d\n",
pdata->attn_gpio);
goto err_data;
}
}
error = rmi_register_phys_device(rmi_phys);
if (error) {
dev_err(&client->dev,
"failed to register physical driver at 0x%.2X.\n",
client->addr);
goto err_data;
}
i2c_set_clientdata(client, rmi_phys);
if (pdata->attn_gpio > 0) {
error = acquire_attn_irq(data);
if (error < 0) {
dev_err(&client->dev,
"request_threaded_irq failed %d\n",
pdata->attn_gpio);
goto err_unregister;
}
}
#if defined(CONFIG_RMI4_DEV)
error = gpio_export(pdata->attn_gpio, false);
if (error) {
dev_warn(&client->dev, "%s: WARNING: Failed to "
"export ATTN gpio!\n", __func__);
error = 0;
} else {
error = gpio_export_link(&(rmi_phys->rmi_dev->dev), "attn",
pdata->attn_gpio);
if (error) {
dev_warn(&(rmi_phys->rmi_dev->dev), "%s: WARNING: "
"Failed to symlink ATTN gpio!\n", __func__);
error = 0;
} else {
dev_info(&(rmi_phys->rmi_dev->dev),
"%s: Exported GPIO %d.", __func__,
pdata->attn_gpio);
}
}
#endif /* CONFIG_RMI4_DEV */
dev_info(&client->dev, "registered rmi i2c driver at 0x%.2X.\n",
client->addr);
return 0;
err_unregister:
rmi_unregister_phys_device(rmi_phys);
err_data:
kfree(data);
err_phys:
kfree(rmi_phys);
return error;
}
static int __devinit rmi_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct rmi_phys_device *rmi_phys;
struct rmi_i2c_data *data;
struct rmi_device_platform_data *pdata = client->dev.platform_data;
int error;
if (!pdata) {
dev_err(&client->dev, "no platform data\n");
return -EINVAL;
}
if (!hsad_get_rmi_enable()) {
dev_err(&client->dev, "rmi not exits\n");
return -EINVAL;
}
dev_info(&client->dev, "Probing %s at %#02x (IRQ %d).\n",
pdata->sensor_name ? pdata->sensor_name : "-no name-",
client->addr, pdata->attn_gpio);
error = set_touch_chip_info(TOUCH_INFO_RMI3250);
if (error) {
dev_err(&client->dev, "set_touch_chip_info error\n");
}
dev_info(&client->dev, "Configuring GPIOs.\n");
error = synaptics_touchpad_gpio_setup(pdata->gpio_data);
if (error < 0) {
dev_err(&client->dev, "Failed to configure GPIOs, code: %d.\n",
error);
return error;
}
dev_info(&client->dev, "Done with GPIO configuration.\n");
error = i2c_check_functionality(client->adapter, I2C_FUNC_I2C);
if (!error) {
dev_err(&client->dev, "i2c_check_functionality error %d.\n",
error);
return error;
}
rmi_phys = kzalloc(sizeof(struct rmi_phys_device), GFP_KERNEL);
if (!rmi_phys)
return -ENOMEM;
data = kzalloc(sizeof(struct rmi_i2c_data), GFP_KERNEL);
if (!data) {
error = -ENOMEM;
goto err_phys;
}
data->enabled = true; /* We plan to come up enabled. */
data->irq = gpio_to_irq(pdata->attn_gpio);
if (pdata->level_triggered) {
data->irq_flags = IRQF_ONESHOT |
((pdata->attn_polarity == RMI_ATTN_ACTIVE_HIGH) ?
IRQF_TRIGGER_HIGH : IRQF_TRIGGER_LOW);
} else {
data->irq_flags =
(pdata->attn_polarity == RMI_ATTN_ACTIVE_HIGH) ?
IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING;
}
data->phys = rmi_phys;
rmi_phys->data = data;
rmi_phys->dev = &client->dev;
rmi_phys->write = rmi_i2c_write;
rmi_phys->write_block = rmi_i2c_write_block;
rmi_phys->read = rmi_i2c_read;
rmi_phys->read_block = rmi_i2c_read_block;
rmi_phys->enable_device = enable_device;
rmi_phys->disable_device = disable_device;
rmi_phys->info.proto = phys_proto_name;
mutex_init(&data->page_mutex);
/* Setting the page to zero will (a) make sure the PSR is in a
* known state, and (b) make sure we can talk to the device.
*/
msleep(100);
error = rmi_set_page(rmi_phys, 0);
if (error) {
dev_err(&client->dev, "Failed to set page select to 0.\n");
goto err_data;
}
error = rmi_register_phys_device(rmi_phys);
if (error) {
dev_err(&client->dev,
"failed to register physical driver at 0x%.2X.\n",
client->addr);
goto err_gpio;
}
i2c_set_clientdata(client, rmi_phys);
rmi_phys->rmi_task = kthread_create(rmi_irq_thread, data, "rmi_irq_thread");
if (IS_ERR(rmi_phys->rmi_task)){
dev_err(&client->dev, "create thread failed!\n");
goto err_unregister;
}
if (pdata->attn_gpio > 0) {
error = acquire_attn_irq(data);
if (error < 0) {
dev_err(&client->dev,
"request_threaded_irq failed %d\n",
pdata->attn_gpio);
goto err_unregister;
}
}
#if defined(CONFIG_RMI4_DEV)
error = gpio_export(pdata->attn_gpio, false);
if (error) {
dev_warn(&client->dev,
"WARNING: Failed to export ATTN gpio!\n");
error = 0;
} else {
error = gpio_export_link(&(rmi_phys->rmi_dev->dev), "attn",
pdata->attn_gpio);
if (error) {
dev_warn(&(rmi_phys->rmi_dev->dev),
"WARNING: Failed to symlink ATTN gpio!\n");
error = 0;
} else {
dev_info(&(rmi_phys->rmi_dev->dev),
"%s: Exported ATTN GPIO %d.", __func__,
pdata->attn_gpio);
}
}
#endif /* CONFIG_RMI4_DEV */
dev_info(&client->dev, "registered rmi i2c driver at %#04x.\n",
client->addr);
return 0;
err_unregister:
rmi_unregister_phys_device(rmi_phys);
err_gpio:
synaptics_touchpad_gpio_free(pdata->gpio_data);
err_data:
kfree(data);
err_phys:
kfree(rmi_phys);
return error;
}
static int __devinit rmi_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct rmi_phys_device *rmi_phys;
struct rmi_i2c_data *data;
struct rmi_device_platform_data *pdata = client->dev.platform_data;
int error;
if (!pdata) {
printk( "ITUCH : Device(%s) no platform data\n", dev_name( &client->dev ) );
return -EINVAL;
}
printk( "ITUCH : Probing %s at %#02x (IRQ %d)\n", pdata->sensor_name ? pdata->sensor_name : "-no name-", client->addr, pdata->attn_gpio );
error = i2c_check_functionality(client->adapter, I2C_FUNC_I2C);
if (!error) {
printk( "ITUCH : Device(%s) i2c_check_functionality error(%d)\n", dev_name( &client->dev ), error );
return error;
}
rmi_phys = kzalloc(sizeof(struct rmi_phys_device), GFP_KERNEL);
if (!rmi_phys)
return -ENOMEM;
data = kzalloc(sizeof(struct rmi_i2c_data), GFP_KERNEL);
if (!data) {
error = -ENOMEM;
goto err_phys;
}
if( gpio_request( pdata->reset_gpio, "RMI4_RESET" ) )
printk( "ITUCH : Unable to request gpio%d\n", pdata->reset_gpio );
reset_touch( pdata );
data->enabled = true; /* We plan to come up enabled. */
data->irq = gpio_to_irq(pdata->attn_gpio);
if (pdata->level_triggered) {
data->irq_flags = IRQF_ONESHOT |
((pdata->attn_polarity == RMI_ATTN_ACTIVE_HIGH) ?
IRQF_TRIGGER_HIGH : IRQF_TRIGGER_LOW);
} else {
data->irq_flags =
(pdata->attn_polarity == RMI_ATTN_ACTIVE_HIGH) ?
IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING;
}
data->phys = rmi_phys;
rmi_phys->data = data;
rmi_phys->dev = &client->dev;
rmi_phys->write = rmi_i2c_write;
rmi_phys->write_block = rmi_i2c_write_block;
rmi_phys->read = rmi_i2c_read;
rmi_phys->read_block = rmi_i2c_read_block;
rmi_phys->enable_device = enable_device;
rmi_phys->disable_device = disable_device;
rmi_phys->info.proto = phys_proto_name;
mutex_init(&data->page_mutex);
/* Setting the page to zero will (a) make sure the PSR is in a
* known state, and (b) make sure we can talk to the device.
*/
error = rmi_set_page(rmi_phys, 0);
if (error) {
printk( "ITUCH : Device(%s) failed to set page select to 0\n", dev_name( &client->dev ) );
goto err_data;
}
if (pdata->gpio_config) {
error = pdata->gpio_config(pdata->gpio_data, true);
if (error < 0) {
printk( "ITUCH : Device(%s) failed to setup irq%d\n", dev_name( &client->dev ), pdata->attn_gpio );
goto err_data;
}
}
error = rmi_register_phys_device(rmi_phys);
if (error) {
printk( "ITUCH : Device(%s) failed to register physical driver at 0x%.2X\n", dev_name( &client->dev ), client->addr );
goto err_gpio;
}
i2c_set_clientdata(client, rmi_phys);
if (pdata->attn_gpio > 0) {
error = acquire_attn_irq(data);
if (error < 0) {
printk( "ITUCH : Device(%s) request_threaded_irq(IRQ%d) failed\n", dev_name( &client->dev ), pdata->attn_gpio );
goto err_unregister;
}
}
#if defined(CONFIG_RMI4_DEV)
error = gpio_export(pdata->attn_gpio, false);
if (error) {
printk( "ITUCH : Device(%s) failed to export ATTN gpio\n", dev_name( &client->dev ) );
error = 0;
} else {
error = gpio_export_link(&(rmi_phys->rmi_dev->dev), "attn",
pdata->attn_gpio);
if (error) {
printk( "ITUCH : Device(%s) failed to symlink ATTN gpio\n", dev_name( &rmi_phys->rmi_dev->dev ) );
error = 0;
} else {
printk( "ITUCH : Device(%s) exported GPIO-%d\n", dev_name( &rmi_phys->rmi_dev->dev ), pdata->attn_gpio );
}
}
#endif /* CONFIG_RMI4_DEV */
printk( "ITUCH : Device(%s) registered rmi i2c driver at 0x%.2X\n", dev_name( &client->dev ), client->addr );
return 0;
err_unregister:
rmi_unregister_phys_device(rmi_phys);
err_gpio:
if (pdata->gpio_config)
pdata->gpio_config(pdata->gpio_data, false);
err_data:
kfree(data);
err_phys:
kfree(rmi_phys);
return error;
}