Thread (3 messages) flat view 3 messages, 3 authors, 2011-07-06

RE: [PATCH 2/3 v2] input : wacom - Update Graphire4 and old Bamboo tablet buttons

From: Ping Cheng <hidden>
Date: 2011-07-06 05:39:49

Chris,

Thank you for the review. BTN_LEFT/RIGHT is declared in the code inside the " case GRAPHIRE:" block if you take a look at the whole routine.

Ping

-----Original Message-----
From: Chris Bagwell [mailto:chris@cnpbagwell.com] 
Sent: Tuesday, July 05, 2011 7:32 PM
To: Ping Cheng
Cc: linux-input@vger.kernel.org; dmitry.torokhov@gmail.com; rydberg@euromail.se; Ping Cheng
Subject: Re: [PATCH 2/3 v2] input : wacom - Update Graphire4 and old Bamboo tablet buttons

On Tue, Jul 5, 2011 at 6:25 PM, Ping Cheng [off-list ref] wrote:
Bamboo touch sets BTN_BACK, BTN_FORWARD, BTN_LEFT, and BTN_RIGHT as 
the default button events for tablet buttons. Change Graphire4 and old 
Bamboo to the same settings.
This should make the tablets more useful out of the box.

At least with xf86-input-wacom, I believe today's default mapping causes an almost direct mapping to X button #'s so that means BTN_0 is dropped (X buttons start at 1), BTN_1 treated as LEFT and BTN_4/5 treated as BACK/FORWARD (it skips over buttons 4/5/6/7 when creating default mappings).

So for most people, its only the BTN_LEFT/RIGHT that would cause a visible difference and I'd think for the better.

I have one question below.
quoted hunk ↗ jump to hunk
Signed-off-by: Ping Cheng <redacted>
---
 drivers/input/tablet/wacom_wac.c |   19 ++++++++-----------
 1 files changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/input/tablet/wacom_wac.c 
b/drivers/input/tablet/wacom_wac.c
index b93501a..19554a4 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -275,8 +275,8 @@ static int wacom_graphire_irq(struct wacom_wac 
*wacom)
               prox = data[7] & 0xf8;
               if (prox || wacom->id[1]) {
                       wacom->id[1] = PAD_DEVICE_ID;
-                       input_report_key(input, BTN_0, (data[7] & 
0x40));
-                       input_report_key(input, BTN_4, (data[7] & 
0x80));
+                       input_report_key(input, BTN_BACK, (data[7] & 
+ 0x40));
+                       input_report_key(input, BTN_FORWARD, (data[7] 
+ & 0x80));
                       rw = ((data[7] & 0x18) >> 3) - ((data[7] & 
0x20) >> 3);
                       input_report_rel(input, REL_WHEEL, rw);
                       if (!prox)
@@ -291,10 +291,10 @@ static int wacom_graphire_irq(struct wacom_wac 
*wacom)
               prox = (data[7] & 0xf8) || data[8];
               if (prox || wacom->id[1]) {
                       wacom->id[1] = PAD_DEVICE_ID;
-                       input_report_key(input, BTN_0, (data[7] & 
0x08));
-                       input_report_key(input, BTN_1, (data[7] & 
0x20));
-                       input_report_key(input, BTN_4, (data[7] & 
0x10));
-                       input_report_key(input, BTN_5, (data[7] & 
0x40));
+                       input_report_key(input, BTN_BACK, (data[7] & 
+ 0x08));
+                       input_report_key(input, BTN_LEFT, (data[7] & 
+ 0x20));
+                       input_report_key(input, BTN_FORWARD, (data[7] 
+ & 0x10));
+                       input_report_key(input, BTN_RIGHT, (data[7] & 
+ 0x40));
                       input_report_abs(input, ABS_WHEEL, (data[8] & 
0x7f));
                       if (!prox)
                               wacom->id[1] = 0; @@ -1076,17 +1076,14 
@@ void wacom_setup_input_capabilities(struct input_dev *input_dev,
       switch (wacom_wac->features.type) {
       case WACOM_MO:
-               __set_bit(BTN_1, input_dev->keybit);
-               __set_bit(BTN_5, input_dev->keybit);
-
Can you add a message to commit on why this is deleted instead of changed?  I'm guessing WACOM_MO series must support mice pucks and so already declare BTN_LEFT and BTN_RIGHT?

Other than that:

Reviewed-by: Chris Bagwell <redacted>
               input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 
0);
               /* fall through */

       case WACOM_G4:
               input_set_capability(input_dev, EV_MSC, MSC_SERIAL);

-               __set_bit(BTN_0, input_dev->keybit);
-               __set_bit(BTN_4, input_dev->keybit);
+               __set_bit(BTN_BACK, input_dev->keybit);
+               __set_bit(BTN_FORWARD, input_dev->keybit);
               /* fall through */

       case GRAPHIRE:
--
1.7.5.4

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