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path: root/drivers/input/touchscreen/elo.c
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Diffstat (limited to 'drivers/input/touchscreen/elo.c')
-rw-r--r--drivers/input/touchscreen/elo.c221
1 files changed, 118 insertions, 103 deletions
diff --git a/drivers/input/touchscreen/elo.c b/drivers/input/touchscreen/elo.c
index 8f38c5e55ce..486d31ba9c0 100644
--- a/drivers/input/touchscreen/elo.c
+++ b/drivers/input/touchscreen/elo.c
@@ -72,45 +72,49 @@ static void elo_process_data_10(struct elo *elo, unsigned char data)
struct input_dev *dev = elo->dev;
elo->data[elo->idx] = data;
- switch (elo->idx++) {
- case 0:
- elo->csum = 0xaa;
- if (data != ELO10_LEAD_BYTE) {
- pr_debug("elo: unsynchronized data: 0x%02x\n", data);
- elo->idx = 0;
- }
- break;
- case 9:
+ switch (elo->idx++) {
+ case 0:
+ elo->csum = 0xaa;
+ if (data != ELO10_LEAD_BYTE) {
+ dev_dbg(&elo->serio->dev,
+ "unsynchronized data: 0x%02x\n", data);
elo->idx = 0;
- if (data != elo->csum) {
- pr_debug("elo: bad checksum: 0x%02x, expected 0x%02x\n",
- data, elo->csum);
- break;
- }
- if (elo->data[1] != elo->expected_packet) {
- if (elo->data[1] != ELO10_TOUCH_PACKET)
- pr_debug("elo: unexpected packet: 0x%02x\n",
- elo->data[1]);
- break;
- }
- if (likely(elo->data[1] == ELO10_TOUCH_PACKET)) {
- input_report_abs(dev, ABS_X, (elo->data[4] << 8) | elo->data[3]);
- input_report_abs(dev, ABS_Y, (elo->data[6] << 8) | elo->data[5]);
- if (elo->data[2] & ELO10_PRESSURE)
- input_report_abs(dev, ABS_PRESSURE,
- (elo->data[8] << 8) | elo->data[7]);
- input_report_key(dev, BTN_TOUCH, elo->data[2] & ELO10_TOUCH);
- input_sync(dev);
- } else if (elo->data[1] == ELO10_ACK_PACKET) {
- if (elo->data[2] == '0')
- elo->expected_packet = ELO10_TOUCH_PACKET;
- complete(&elo->cmd_done);
- } else {
- memcpy(elo->response, &elo->data[1], ELO10_PACKET_LEN);
- elo->expected_packet = ELO10_ACK_PACKET;
- }
+ }
+ break;
+
+ case 9:
+ elo->idx = 0;
+ if (data != elo->csum) {
+ dev_dbg(&elo->serio->dev,
+ "bad checksum: 0x%02x, expected 0x%02x\n",
+ data, elo->csum);
break;
+ }
+ if (elo->data[1] != elo->expected_packet) {
+ if (elo->data[1] != ELO10_TOUCH_PACKET)
+ dev_dbg(&elo->serio->dev,
+ "unexpected packet: 0x%02x\n",
+ elo->data[1]);
+ break;
+ }
+ if (likely(elo->data[1] == ELO10_TOUCH_PACKET)) {
+ input_report_abs(dev, ABS_X, (elo->data[4] << 8) | elo->data[3]);
+ input_report_abs(dev, ABS_Y, (elo->data[6] << 8) | elo->data[5]);
+ if (elo->data[2] & ELO10_PRESSURE)
+ input_report_abs(dev, ABS_PRESSURE,
+ (elo->data[8] << 8) | elo->data[7]);
+ input_report_key(dev, BTN_TOUCH, elo->data[2] & ELO10_TOUCH);
+ input_sync(dev);
+ } else if (elo->data[1] == ELO10_ACK_PACKET) {
+ if (elo->data[2] == '0')
+ elo->expected_packet = ELO10_TOUCH_PACKET;
+ complete(&elo->cmd_done);
+ } else {
+ memcpy(elo->response, &elo->data[1], ELO10_PACKET_LEN);
+ elo->expected_packet = ELO10_ACK_PACKET;
+ }
+ break;
}
elo->csum += data;
}
@@ -123,42 +127,53 @@ static void elo_process_data_6(struct elo *elo, unsigned char data)
switch (elo->idx++) {
- case 0: if ((data & 0xc0) != 0xc0) elo->idx = 0; break;
- case 1: if ((data & 0xc0) != 0x80) elo->idx = 0; break;
- case 2: if ((data & 0xc0) != 0x40) elo->idx = 0; break;
-
- case 3:
- if (data & 0xc0) {
- elo->idx = 0;
- break;
- }
+ case 0:
+ if ((data & 0xc0) != 0xc0)
+ elo->idx = 0;
+ break;
- input_report_abs(dev, ABS_X, ((elo->data[0] & 0x3f) << 6) | (elo->data[1] & 0x3f));
- input_report_abs(dev, ABS_Y, ((elo->data[2] & 0x3f) << 6) | (elo->data[3] & 0x3f));
+ case 1:
+ if ((data & 0xc0) != 0x80)
+ elo->idx = 0;
+ break;
- if (elo->id == 2) {
- input_report_key(dev, BTN_TOUCH, 1);
- input_sync(dev);
- elo->idx = 0;
- }
+ case 2:
+ if ((data & 0xc0) != 0x40)
+ elo->idx = 0;
+ break;
+ case 3:
+ if (data & 0xc0) {
+ elo->idx = 0;
break;
+ }
- case 4:
- if (data) {
- input_sync(dev);
- elo->idx = 0;
- }
- break;
+ input_report_abs(dev, ABS_X, ((elo->data[0] & 0x3f) << 6) | (elo->data[1] & 0x3f));
+ input_report_abs(dev, ABS_Y, ((elo->data[2] & 0x3f) << 6) | (elo->data[3] & 0x3f));
- case 5:
- if ((data & 0xf0) == 0) {
- input_report_abs(dev, ABS_PRESSURE, elo->data[5]);
- input_report_key(dev, BTN_TOUCH, !!elo->data[5]);
- }
+ if (elo->id == 2) {
+ input_report_key(dev, BTN_TOUCH, 1);
input_sync(dev);
elo->idx = 0;
- break;
+ }
+
+ break;
+
+ case 4:
+ if (data) {
+ input_sync(dev);
+ elo->idx = 0;
+ }
+ break;
+
+ case 5:
+ if ((data & 0xf0) == 0) {
+ input_report_abs(dev, ABS_PRESSURE, elo->data[5]);
+ input_report_key(dev, BTN_TOUCH, !!elo->data[5]);
+ }
+ input_sync(dev);
+ elo->idx = 0;
+ break;
}
}
@@ -170,17 +185,17 @@ static void elo_process_data_3(struct elo *elo, unsigned char data)
switch (elo->idx++) {
- case 0:
- if ((data & 0x7f) != 0x01)
- elo->idx = 0;
- break;
- case 2:
- input_report_key(dev, BTN_TOUCH, !(elo->data[1] & 0x80));
- input_report_abs(dev, ABS_X, elo->data[1]);
- input_report_abs(dev, ABS_Y, elo->data[2]);
- input_sync(dev);
+ case 0:
+ if ((data & 0x7f) != 0x01)
elo->idx = 0;
- break;
+ break;
+ case 2:
+ input_report_key(dev, BTN_TOUCH, !(elo->data[1] & 0x80));
+ input_report_abs(dev, ABS_X, elo->data[1]);
+ input_report_abs(dev, ABS_Y, elo->data[2]);
+ input_sync(dev);
+ elo->idx = 0;
+ break;
}
}
@@ -189,19 +204,19 @@ static irqreturn_t elo_interrupt(struct serio *serio,
{
struct elo *elo = serio_get_drvdata(serio);
- switch(elo->id) {
- case 0:
- elo_process_data_10(elo, data);
- break;
+ switch (elo->id) {
+ case 0:
+ elo_process_data_10(elo, data);
+ break;
- case 1:
- case 2:
- elo_process_data_6(elo, data);
- break;
+ case 1:
+ case 2:
+ elo_process_data_6(elo, data);
+ break;
- case 3:
- elo_process_data_3(elo, data);
- break;
+ case 3:
+ elo_process_data_3(elo, data);
+ break;
}
return IRQ_HANDLED;
@@ -261,10 +276,10 @@ static int elo_setup_10(struct elo *elo)
if (packet[3] & ELO10_PRESSURE)
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
- printk(KERN_INFO "elo: %sTouch touchscreen, fw: %02x.%02x, "
- "features: 0x%02x, controller: 0x%02x\n",
- elo_types[(packet[1] -'0') & 0x03],
- packet[5], packet[4], packet[3], packet[7]);
+ dev_info(&elo->serio->dev,
+ "%sTouch touchscreen, fw: %02x.%02x, features: 0x%02x, controller: 0x%02x\n",
+ elo_types[(packet[1] -'0') & 0x03],
+ packet[5], packet[4], packet[3], packet[7]);
return 0;
}
@@ -330,24 +345,24 @@ static int elo_connect(struct serio *serio, struct serio_driver *drv)
switch (elo->id) {
- case 0: /* 10-byte protocol */
- if (elo_setup_10(elo))
- goto fail3;
+ case 0: /* 10-byte protocol */
+ if (elo_setup_10(elo))
+ goto fail3;
- break;
+ break;
- case 1: /* 6-byte protocol */
- input_set_abs_params(input_dev, ABS_PRESSURE, 0, 15, 0, 0);
+ case 1: /* 6-byte protocol */
+ input_set_abs_params(input_dev, ABS_PRESSURE, 0, 15, 0, 0);
- case 2: /* 4-byte protocol */
- input_set_abs_params(input_dev, ABS_X, 96, 4000, 0, 0);
- input_set_abs_params(input_dev, ABS_Y, 96, 4000, 0, 0);
- break;
+ case 2: /* 4-byte protocol */
+ input_set_abs_params(input_dev, ABS_X, 96, 4000, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 96, 4000, 0, 0);
+ break;
- case 3: /* 3-byte protocol */
- input_set_abs_params(input_dev, ABS_X, 0, 255, 0, 0);
- input_set_abs_params(input_dev, ABS_Y, 0, 255, 0, 0);
- break;
+ case 3: /* 3-byte protocol */
+ input_set_abs_params(input_dev, ABS_X, 0, 255, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 0, 255, 0, 0);
+ break;
}
err = input_register_device(elo->dev);
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 09:41:58 +0000