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HID: Support 171 byte variant of Samsung USB IR receiver

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Extends the existing Samsung USB IrDA (0419:0001) quirk with newly reported 171
byte variant. It needs the same quirk as the other devices already supported
by hid-samsung (wrong logical range)

Refactors duplicate trace call into local helper function.

The original bug report for the new variant is available at the second half of
this ticket page:

  https://bugs.launchpad.net/bugs/326986

Signed-off-by: Robert Schedel <r.schedel@yahoo.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Robert Schedel 2009-12-11 00:37:11 +01:00 committed by Jiri Kosina
parent 70c66567d1
commit 3975bc5630
1 changed files with 19 additions and 6 deletions
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25
drivers/hid/hid-samsung.c
View File

@ -39,7 +39,17 @@
*
* 3. 135 byte report descriptor
* Report #4 has an array field with logical range 0..17 instead of 1..14.
*
* 4. 171 byte report descriptor
* Report #3 has an array field with logical range 0..1 instead of 1..3.
*/
static inline void samsung_dev_trace(struct hid_device *hdev,
unsigned int rsize)
{
dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
"descriptor\n", rsize);
}
static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int rsize)
{
@ -47,8 +57,7 @@ static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
rdesc[182] == 0x40) {
dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
"descriptor\n", 184);
samsung_dev_trace(hdev, 184);
rdesc[176] = 0xff;
rdesc[178] = 0x08;
rdesc[180] = 0x06;
@ -56,17 +65,21 @@ static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
} else
if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
rdesc[194] == 0x25 && rdesc[195] == 0x12) {
dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
"descriptor\n", 203);
samsung_dev_trace(hdev, 203);
rdesc[193] = 0x1;
rdesc[195] = 0xf;
} else
if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
rdesc[126] == 0x25 && rdesc[127] == 0x11) {
dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
"descriptor\n", 135);
samsung_dev_trace(hdev, 135);
rdesc[125] = 0x1;
rdesc[127] = 0xe;
} else
if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
rdesc[162] == 0x25 && rdesc[163] == 0x01) {
samsung_dev_trace(hdev, 171);
rdesc[161] = 0x1;
rdesc[163] = 0x3;
}
}