On Mon, Jun 19, 2017 at 01:02:18PM -0700, Laura Abbott wrote:
> On 06/19/2017 11:43 AM, Paul Donohue wrote:
> > I get the same results as you - x_max and y_max affect cursor speed, and
> > x_res and y_res seem to have no effect. I can't seem to come up with any
> > values that cause intermittent cursor issues on one side of the touchpad.
> > Both max and res do get passed up to the X driver, and I do see references
> > to both max and resolution in xf86-input-evdev, although I haven't actually
> > traced it through to see if/where each value is actually consumed with my
> > setup.
> >
> > Maybe we should ask the user to try a few more tests?
> > 1) Using the original code (without the modifications from bug 195215), add
> > the following before 'return 0' at the end of
> > alps_update_device_area_ss4_v2(), then run `dmesg | grep num-electrodes`
> > after loading the alps kernel module to get the output. This should tell
> > us what values the user is actually reading from the hardware:
> > psmouse_err(psmouse,
> > "pitch %dx%d num-electrodes %dx%d physical size %dx%dmm res %dx%d max
> > %dx%d\n",
> > x_pitch, y_pitch, num_x_electrode, num_y_electrode,
> > x_phys / 10, y_phys / 10, priv->x_res, priv->y_res, priv->x_max,
> > priv->y_max);
> > 2) Use the old electrode count code but the new pitch code:
> > if (IS_SS4PLUS_DEV(priv->dev_id)) {
> > num_x_electrode =
> > SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
> > num_y_electrode =
> > SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);
> >
> > priv->x_max =
> > (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
> > priv->y_max =
> > (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
> >
> > x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM;
> > y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM;
> >
> > } else {
> > 3) Use the new electrode count code but the old pitch code:
> > if (IS_SS4PLUS_DEV(priv->dev_id)) {
> > num_x_electrode =
> > SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F);
> > num_y_electrode =
> > SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F);
> >
> > priv->x_max =
> > (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
> > priv->y_max =
> > (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
> >
> > x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
> > y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;
> >
> > } else {
> >
>
> Can you produce patches for these test cases?
I've reduced it to two test cases. Patches attached.
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 262d1057c1da..341a6c3bf907 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -2467,14 +2467,14 @@ static int alps_update_device_area_ss4_v2(unsigned char
otp[][4],
if (IS_SS4PLUS_DEV(priv->dev_id)) {
num_x_electrode =
- SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F);
+ SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
num_y_electrode =
- SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F);
+ SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);
priv->x_max =
- (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
+ (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
priv->y_max =
- (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
+ (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM;
y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM;
@@ -2500,6 +2500,11 @@ static int alps_update_device_area_ss4_v2(unsigned char
otp[][4],
priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
+ psmouse_err(psmouse,
+ "test1 pitch %dx%d num-electrodes %dx%d physical size
%dx%dmm res %dx%d max %dx%d\n",
+ x_pitch, y_pitch, num_x_electrode, num_y_electrode,
+ x_phys / 10, y_phys / 10, priv->x_res, priv->y_res,
priv->x_max, priv->y_max);
+
return 0;
}
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 262d1057c1da..f57dca5cecd5 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -2476,8 +2476,8 @@ static int alps_update_device_area_ss4_v2(unsigned char
otp[][4],
priv->y_max =
(num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
- x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM;
- y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM;
+ x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
+ y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;
} else {
num_x_electrode =
@@ -2500,6 +2500,11 @@ static int alps_update_device_area_ss4_v2(unsigned char
otp[][4],
priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
+ psmouse_err(psmouse,
+ "test2 pitch %dx%d num-electrodes %dx%d physical size
%dx%dmm res %dx%d max %dx%d\n",
+ x_pitch, y_pitch, num_x_electrode, num_y_electrode,
+ x_phys / 10, y_phys / 10, priv->x_res, priv->y_res,
priv->x_max, priv->y_max);
+
return 0;
}
