#define MODULE_NAME "em28xx"
-#define dprintk( fmt, arg...) do { \
+#define dprintk(fmt, arg...) do { \
if (ir_debug) \
dev_printk(KERN_DEBUG, &ir->dev->intf->dev, \
"input: %s: " fmt, __func__, ## arg); \
} while (0)
-/**********************************************************
- Polling structure used by em28xx IR's
- **********************************************************/
+/*
+ * Polling structure used by em28xx IR's
+ */
struct em28xx_ir_poll_result {
unsigned int toggle_bit:1;
int (*get_key_i2c)(struct i2c_client *ir, enum rc_proto *protocol,
u32 *scancode);
- int (*get_key)(struct em28xx_IR *, struct em28xx_ir_poll_result *);
+ int (*get_key)(struct em28xx_IR *ir, struct em28xx_ir_poll_result *r);
};
-/**********************************************************
- I2C IR based get keycodes - should be used with ir-kbd-i2c
- **********************************************************/
+/*
+ * I2C IR based get keycodes - should be used with ir-kbd-i2c
+ */
static int em28xx_get_key_terratec(struct i2c_client *i2c_dev,
enum rc_proto *protocol, u32 *scancode)
unsigned char b;
/* poll IR chip */
- if (1 != i2c_master_recv(i2c_dev, &b, 1))
+ if (i2c_master_recv(i2c_dev, &b, 1) != 1)
return -EIO;
- /* it seems that 0xFE indicates that a button is still hold
- down, while 0xff indicates that no button is hold down. */
+ /*
+ * it seems that 0xFE indicates that a button is still hold
+ * down, while 0xff indicates that no button is hold down.
+ */
if (b == 0xff)
return 0;
/* poll IR chip */
- if (3 != i2c_master_recv(i2c_dev, buf, 3))
+ if (i2c_master_recv(i2c_dev, buf, 3) != 3)
return -EIO;
if (buf[0] != 0x00)
{
unsigned char subaddr, keydetect, key;
- struct i2c_msg msg[] = { { .addr = i2c_dev->addr, .flags = 0, .buf = &subaddr, .len = 1},
- { .addr = i2c_dev->addr, .flags = I2C_M_RD, .buf = &keydetect, .len = 1} };
+ struct i2c_msg msg[] = {
+ {
+ .addr = i2c_dev->addr,
+ .flags = 0,
+ .buf = &subaddr, .len = 1
+ }, {
+ .addr = i2c_dev->addr,
+ .flags = I2C_M_RD,
+ .buf = &keydetect,
+ .len = 1
+ }
+ };
subaddr = 0x10;
- if (2 != i2c_transfer(i2c_dev->adapter, msg, 2))
+ if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)
return -EIO;
if (keydetect == 0x00)
return 0;
subaddr = 0x00;
msg[1].buf = &key;
- if (2 != i2c_transfer(i2c_dev->adapter, msg, 2))
+ if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)
return -EIO;
if (key == 0x00)
return 0;
return 1;
}
-/**********************************************************
- Poll based get keycode functions
- **********************************************************/
+/*
+ * Poll based get keycode functions
+ */
/* This is for the em2860/em2880 */
static int default_polling_getkey(struct em28xx_IR *ir,
int rc;
u8 msg[3] = { 0, 0, 0 };
- /* Read key toggle, brand, and key code
- on registers 0x45, 0x46 and 0x47
+ /*
+ * Read key toggle, brand, and key code
+ * on registers 0x45, 0x46 and 0x47
*/
rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR,
msg, sizeof(msg));
int rc;
u8 msg[5] = { 0, 0, 0, 0, 0 };
- /* Read key toggle, brand, and key code
- on registers 0x51-55
+ /*
+ * Read key toggle, brand, and key code
+ * on registers 0x51-55
*/
rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR,
msg, sizeof(msg));
return 0;
}
-/**********************************************************
- Polling code for em28xx
- **********************************************************/
+/*
+ * Polling code for em28xx
+ */
static int em28xx_i2c_ir_handle_key(struct em28xx_IR *ir)
{
if (ir->dev->chip_id == CHIP_ID_EM2874 ||
ir->dev->chip_id == CHIP_ID_EM2884)
- /* The em2874 clears the readcount field every time the
- register is read. The em2860/2880 datasheet says that it
- is supposed to clear the readcount, but it doesn't. So with
- the em2874, we are looking for a non-zero read count as
- opposed to a readcount that is incrementing */
+ /*
+ * The em2874 clears the readcount field every time the
+ * register is read. The em2860/2880 datasheet says
+ * that it is supposed to clear the readcount, but it
+ * doesn't. So with the em2874, we are looking for a
+ * non-zero read count as opposed to a readcount
+ * that is incrementing
+ */
ir->last_readcount = 0;
else
ir->last_readcount = poll_result.read_count;
static int em28xx_probe_i2c_ir(struct em28xx *dev)
{
int i = 0;
- /* Leadtek winfast tv USBII deluxe can find a non working IR-device */
- /* at address 0x18, so if that address is needed for another board in */
- /* the future, please put it after 0x1f. */
+ /*
+ * Leadtek winfast tv USBII deluxe can find a non working IR-device
+ * at address 0x18, so if that address is needed for another board in
+ * the future, please put it after 0x1f.
+ */
const unsigned short addr_list[] = {
0x1f, 0x30, 0x47, I2C_CLIENT_END
};
while (addr_list[i] != I2C_CLIENT_END) {
- if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus], addr_list[i]) == 1)
+ if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus],
+ addr_list[i]) == 1)
return addr_list[i];
i++;
}
return -ENODEV;
}
-/**********************************************************
- Handle buttons
- **********************************************************/
+/*
+ * Handle buttons
+ */
static void em28xx_query_buttons(struct work_struct *work)
{
j = 0;
while (dev->board.buttons[j].role >= 0 &&
dev->board.buttons[j].role < EM28XX_NUM_BUTTON_ROLES) {
- const struct em28xx_button *button = &dev->board.buttons[j];
+ const struct em28xx_button *button;
+
+ button = &dev->board.buttons[j];
/* Check if button uses the current address */
if (button->reg_r != dev->button_polling_addresses[i]) {
/* Add read address to list of polling addresses */
if (addr_new) {
unsigned int index = dev->num_button_polling_addresses;
+
dev->button_polling_addresses[index] = button->reg_r;
dev->num_button_polling_addresses++;
}
/* Clear polling addresses list */
dev->num_button_polling_addresses = 0;
/* Deregister input devices */
- if (dev->sbutton_input_dev != NULL) {
+ if (dev->sbutton_input_dev) {
dev_info(&dev->intf->dev, "Deregistering snapshot button\n");
input_unregister_device(dev->sbutton_input_dev);
dev->sbutton_input_dev = NULL;
}
}
- if (dev->board.ir_codes == NULL && !dev->board.has_ir_i2c) {
+ if (!dev->board.ir_codes && !dev->board.has_ir_i2c) {
/* No remote control support */
dev_warn(&dev->intf->dev,
"Remote control support is not available for this card.\n");
goto error;
}
- ir->i2c_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ ir->i2c_client = kzalloc(sizeof(*ir->i2c_client), GFP_KERNEL);
if (!ir->i2c_client)
goto error;
ir->i2c_client->adapter = &ir->dev->i2c_adap[dev->def_i2c_bus];
if (ir)
cancel_delayed_work_sync(&ir->work);
cancel_delayed_work_sync(&dev->buttons_query_work);
- /* is canceling delayed work sufficient or does the rc event
- kthread needs stopping? kthread is stopped in
- ir_raw_event_unregister() */
+ /*
+ * is canceling delayed work sufficient or does the rc event
+ * kthread needs stopping? kthread is stopped in
+ * ir_raw_event_unregister()
+ */
return 0;
}
return 0;
dev_info(&dev->intf->dev, "Resuming input extension\n");
- /* if suspend calls ir_raw_event_unregister(), the should call
- ir_raw_event_register() */
+ /*
+ * if suspend calls ir_raw_event_unregister(), the should call
+ * ir_raw_event_register()
+ */
if (ir)
schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
if (dev->num_button_polling_addresses)
projects / openwrt / staging / blogic.git / commitdiff