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-rw-r--r--drivers/input/mouse/appletouch.c266
1 files changed, 197 insertions, 69 deletions
diff --git a/drivers/input/mouse/appletouch.c b/drivers/input/mouse/appletouch.c
index 1f41ae94f26..36ebe5c25ee 100644
--- a/drivers/input/mouse/appletouch.c
+++ b/drivers/input/mouse/appletouch.c
@@ -327,11 +327,14 @@ static inline void atp_report_fingers(struct input_dev *input, int fingers)
input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2);
}
-static void atp_complete(struct urb *urb)
+/* Check URB status and for correct length of data package */
+
+#define ATP_URB_STATUS_SUCCESS 0
+#define ATP_URB_STATUS_ERROR 1
+#define ATP_URB_STATUS_ERROR_FATAL 2
+
+static int atp_status_check(struct urb *urb)
{
- int x, y, x_z, y_z, x_f, y_f;
- int retval, i, j;
- int key;
struct atp *dev = urb->context;
switch (urb->status) {
@@ -351,11 +354,12 @@ static void atp_complete(struct urb *urb)
/* This urb is terminated, clean up */
dbg("atp_complete: urb shutting down with status: %d",
urb->status);
- return;
+ return ATP_URB_STATUS_ERROR_FATAL;
+
default:
dbg("atp_complete: nonzero urb status received: %d",
urb->status);
- goto exit;
+ return ATP_URB_STATUS_ERROR;
}
/* drop incomplete datasets */
@@ -363,30 +367,33 @@ static void atp_complete(struct urb *urb)
dprintk("appletouch: incomplete data package"
" (first byte: %d, length: %d).\n",
dev->data[0], dev->urb->actual_length);
- goto exit;
+ return ATP_URB_STATUS_ERROR;
}
- /* reorder the sensors values */
- if (dev->type == ATP_GEYSER3 || dev->type == ATP_GEYSER4) {
- memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
+ return ATP_URB_STATUS_SUCCESS;
+}
- /*
- * The values are laid out like this:
- * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ...
- * '-' is an unused value.
- */
+/*
+ * USB interrupt callback functions
+ */
- /* read X values */
- for (i = 0, j = 19; i < 20; i += 2, j += 3) {
- dev->xy_cur[i] = dev->data[j + 1];
- dev->xy_cur[i + 1] = dev->data[j + 2];
- }
- /* read Y values */
- for (i = 0, j = 1; i < 9; i += 2, j += 3) {
- dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1];
- dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2];
- }
- } else if (dev->type == ATP_GEYSER2) {
+/* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */
+
+static void atp_complete_geyser_1_2(struct urb *urb)
+{
+ int x, y, x_z, y_z, x_f, y_f;
+ int retval, i, j;
+ int key;
+ struct atp *dev = urb->context;
+ int status = atp_status_check(urb);
+
+ if (status == ATP_URB_STATUS_ERROR_FATAL)
+ return;
+ else if (status == ATP_URB_STATUS_ERROR)
+ goto exit;
+
+ /* reorder the sensors values */
+ if (dev->type == ATP_GEYSER2) {
memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
/*
@@ -427,33 +434,146 @@ static void atp_complete(struct urb *urb)
/* first sample */
dev->valid = true;
dev->x_old = dev->y_old = -1;
+
+ /* Store first sample */
memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
- if (dev->size_detect_done ||
- dev->type == ATP_GEYSER3) /* No 17" Macbooks (yet) */
+ /* Perform size detection, if not done already */
+ if (!dev->size_detect_done) {
+
+ /* 17" Powerbooks have extra X sensors */
+ for (i = (dev->type == ATP_GEYSER2 ? 15 : 16);
+ i < ATP_XSENSORS; i++) {
+ if (!dev->xy_cur[i])
+ continue;
+
+ printk(KERN_INFO
+ "appletouch: 17\" model detected.\n");
+
+ if (dev->type == ATP_GEYSER2)
+ input_set_abs_params(dev->input, ABS_X,
+ 0,
+ (20 - 1) *
+ ATP_XFACT - 1,
+ ATP_FUZZ, 0);
+ else
+ input_set_abs_params(dev->input, ABS_X,
+ 0,
+ (26 - 1) *
+ ATP_XFACT - 1,
+ ATP_FUZZ, 0);
+ break;
+ }
+
+ dev->size_detect_done = 1;
goto exit;
+ }
+ }
- /* 17" Powerbooks have extra X sensors */
- for (i = (dev->type == ATP_GEYSER2 ? 15 : 16);
- i < ATP_XSENSORS; i++) {
- if (!dev->xy_cur[i])
- continue;
-
- printk(KERN_INFO "appletouch: 17\" model detected.\n");
- if (dev->type == ATP_GEYSER2)
- input_set_abs_params(dev->input, ABS_X, 0,
- (20 - 1) *
- ATP_XFACT - 1,
- ATP_FUZZ, 0);
- else
- input_set_abs_params(dev->input, ABS_X, 0,
- (ATP_XSENSORS - 1) *
- ATP_XFACT - 1,
- ATP_FUZZ, 0);
- break;
+ for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) {
+ /* accumulate the change */
+ signed char change = dev->xy_old[i] - dev->xy_cur[i];
+ dev->xy_acc[i] -= change;
+
+ /* prevent down drifting */
+ if (dev->xy_acc[i] < 0)
+ dev->xy_acc[i] = 0;
+ }
+
+ memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
+
+ dbg_dump("accumulator", dev->xy_acc);
+
+ x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS,
+ ATP_XFACT, &x_z, &x_f);
+ y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS,
+ ATP_YFACT, &y_z, &y_f);
+ key = dev->data[dev->datalen - 1] & 1;
+
+ if (x && y) {
+ if (dev->x_old != -1) {
+ x = (dev->x_old * 3 + x) >> 2;
+ y = (dev->y_old * 3 + y) >> 2;
+ dev->x_old = x;
+ dev->y_old = y;
+
+ if (debug > 1)
+ printk(KERN_DEBUG "appletouch: "
+ "X: %3d Y: %3d Xz: %3d Yz: %3d\n",
+ x, y, x_z, y_z);
+
+ input_report_key(dev->input, BTN_TOUCH, 1);
+ input_report_abs(dev->input, ABS_X, x);
+ input_report_abs(dev->input, ABS_Y, y);
+ input_report_abs(dev->input, ABS_PRESSURE,
+ min(ATP_PRESSURE, x_z + y_z));
+ atp_report_fingers(dev->input, max(x_f, y_f));
}
+ dev->x_old = x;
+ dev->y_old = y;
+
+ } else if (!x && !y) {
+
+ dev->x_old = dev->y_old = -1;
+ input_report_key(dev->input, BTN_TOUCH, 0);
+ input_report_abs(dev->input, ABS_PRESSURE, 0);
+ atp_report_fingers(dev->input, 0);
+
+ /* reset the accumulator on release */
+ memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
+ }
+
+ input_report_key(dev->input, BTN_LEFT, key);
+ input_sync(dev->input);
+
+ exit:
+ retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
+ if (retval)
+ err("atp_complete: usb_submit_urb failed with result %d",
+ retval);
+}
+
+/* Interrupt function for older touchpads: GEYSER3/GEYSER4 */
+
+static void atp_complete_geyser_3_4(struct urb *urb)
+{
+ int x, y, x_z, y_z, x_f, y_f;
+ int retval, i, j;
+ int key;
+ struct atp *dev = urb->context;
+ int status = atp_status_check(urb);
+
+ if (status == ATP_URB_STATUS_ERROR_FATAL)
+ return;
+ else if (status == ATP_URB_STATUS_ERROR)
+ goto exit;
+
+ /* Reorder the sensors values:
+ *
+ * The values are laid out like this:
+ * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ...
+ * '-' is an unused value.
+ */
+
+ /* read X values */
+ for (i = 0, j = 19; i < 20; i += 2, j += 3) {
+ dev->xy_cur[i] = dev->data[j + 1];
+ dev->xy_cur[i + 1] = dev->data[j + 2];
+ }
+ /* read Y values */
+ for (i = 0, j = 1; i < 9; i += 2, j += 3) {
+ dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1];
+ dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2];
+ }
+
+ dbg_dump("sample", dev->xy_cur);
+
+ if (!dev->valid) {
+ /* first sample */
+ dev->valid = true;
+ dev->x_old = dev->y_old = -1;
+ memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
- dev->size_detect_done = 1;
goto exit;
}
@@ -514,28 +634,26 @@ static void atp_complete(struct urb *urb)
input_sync(dev->input);
/*
- * Many Geysers will continue to send packets continually after
+ * Geysers 3/4 will continue to send packets continually after
* the first touch unless reinitialised. Do so if it's been
* idle for a while in order to avoid waking the kernel up
- * several hundred times a second. Re-initialization does not
- * work on Fountain touchpads.
+ * several hundred times a second.
*/
- if (dev->type != ATP_FOUNTAIN) {
- /*
- * Button must not be pressed when entering suspend,
- * otherwise we will never release the button.
- */
- if (!x && !y && !key) {
- dev->idlecount++;
- if (dev->idlecount == 10) {
- dev->valid = false;
- schedule_work(&dev->work);
- /* Don't resubmit urb here, wait for reinit */
- return;
- }
- } else
- dev->idlecount = 0;
- }
+
+ /*
+ * Button must not be pressed when entering suspend,
+ * otherwise we will never release the button.
+ */
+ if (!x && !y && !key) {
+ dev->idlecount++;
+ if (dev->idlecount == 10) {
+ dev->valid = false;
+ schedule_work(&dev->work);
+ /* Don't resubmit urb here, wait for reinit */
+ return;
+ }
+ } else
+ dev->idlecount = 0;
exit:
retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
@@ -632,9 +750,19 @@ static int atp_probe(struct usb_interface *iface,
if (!dev->data)
goto err_free_urb;
- usb_fill_int_urb(dev->urb, udev,
- usb_rcvintpipe(udev, int_in_endpointAddr),
- dev->data, dev->datalen, atp_complete, dev, 1);
+ /* Select the USB complete (callback) function */
+ if (dev->type == ATP_FOUNTAIN ||
+ dev->type == ATP_GEYSER1 ||
+ dev->type == ATP_GEYSER2)
+ usb_fill_int_urb(dev->urb, udev,
+ usb_rcvintpipe(udev, int_in_endpointAddr),
+ dev->data, dev->datalen,
+ atp_complete_geyser_1_2, dev, 1);
+ else
+ usb_fill_int_urb(dev->urb, udev,
+ usb_rcvintpipe(udev, int_in_endpointAddr),
+ dev->data, dev->datalen,
+ atp_complete_geyser_3_4, dev, 1);
error = atp_handle_geyser(dev);
if (error)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 03:31:58 +0000