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Date: Mon, 28 Jan 2013 16:54:00 +0100
From: Benjamin Tissoires <benjamin.tissoires@...il.com>
To: Henrik Rydberg <rydberg@...omail.se>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>,
Jiri Kosina <jkosina@...e.cz>,
Stephane Chatty <chatty@...c.fr>, linux-input@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 25/25] HID: multitouch: make MT_CLS_ALWAYS_TRUE the new
default class
On Mon, Jan 28, 2013 at 4:13 PM, Henrik Rydberg <rydberg@...omail.se> wrote:
> Hi Benjamin,
>
>> By running a test on all the traces of the devices I have,
>> I noticed that the class MT_CLS_ALWAYS_TRUE could handle all
>> the devices I've seen so far without any other quirks.
>> I guess this is the behavior Win 7 requires in its driver.
>>
>> We can change the default class then and keep the existing classes
>> for backward compatibility and performances for some of them.
>
> Nice observation. A simpler route is to add new devices according the
> new scheme, and leave the current code intact. Don't fix what ain't
> broken.
I fully agree with that, and this is the way I built this patch. All
the current working devices supported in the kernel through the 'old'
default class (that I was not able to test) are keeping the very same
class. This class has just been renamed "NSMU".
The new devices will get the new default class.
Maybe that if I do the change with 2 different patches, it will be
more readable and error-proof?
Cheers,
Benjamin
>
>>
>> Two operations have been done:
>> - replaced MT_CLS_DEFAULT by MT_CLS_NSMU
>> - then replaced MT_CLS_ALWAYS_TRUE by MT_CLS_DEFAULT
>>
>> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...il.com>
>> ---
>> drivers/hid/hid-multitouch.c | 53 ++++++++++++++++++++++----------------------
>> 1 file changed, 27 insertions(+), 26 deletions(-)
>>
>> diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
>> index e3f0bf7..25b1d2c 100644
>> --- a/drivers/hid/hid-multitouch.c
>> +++ b/drivers/hid/hid-multitouch.c
>> @@ -117,7 +117,7 @@ struct mt_device {
>> #define MT_CLS_DUAL_INRANGE_CONTACTID 0x0006
>> #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007
>> #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009
>> -#define MT_CLS_ALWAYS_TRUE 0x000a
>> +#define MT_CLS_NSMU 0x000a
>> #define MT_CLS_CONTACT_ID 0x0011
>> #define MT_CLS_MINUS_ONE 0x0012
>> #define MT_CLS_DUAL_CONTACT_ID 0x0013
>> @@ -155,6 +155,9 @@ static int cypress_compute_slot(struct mt_device *td)
>>
>> static struct mt_class mt_classes[] = {
>> { .name = MT_CLS_DEFAULT,
>> + .quirks = MT_QUIRK_ALWAYS_VALID |
>> + MT_QUIRK_CONTACT_CNT_ACCURATE },
>> + { .name = MT_CLS_NSMU,
>> .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
>> { .name = MT_CLS_SERIAL,
>> .quirks = MT_QUIRK_ALWAYS_VALID},
>> @@ -177,9 +180,7 @@ static struct mt_class mt_classes[] = {
>> { .name = MT_CLS_INRANGE_CONTACTNUMBER,
>> .quirks = MT_QUIRK_VALID_IS_INRANGE |
>> MT_QUIRK_SLOT_IS_CONTACTNUMBER },
>> - { .name = MT_CLS_ALWAYS_TRUE,
>> - .quirks = MT_QUIRK_ALWAYS_VALID |
>> - MT_QUIRK_CONTACT_CNT_ACCURATE },
>> +
>> { .name = MT_CLS_CONTACT_ID,
>> .quirks = MT_QUIRK_ALWAYS_VALID |
>> MT_QUIRK_CONTACT_CNT_ACCURATE |
>> @@ -963,7 +964,7 @@ static const struct hid_device_id mt_devices[] = {
>> USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
>>
>> /* Baanto multitouch devices */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
>> USB_DEVICE_ID_BAANTO_MT_190W2) },
>> /* Cando panels */
>> @@ -981,12 +982,12 @@ static const struct hid_device_id mt_devices[] = {
>> USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
>>
>> /* Chunghwa Telecom touch panels */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
>> USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
>>
>> /* CVTouch panels */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
>> USB_DEVICE_ID_CVTOUCH_SCREEN) },
>>
>> @@ -1075,12 +1076,12 @@ static const struct hid_device_id mt_devices[] = {
>> USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
>>
>> /* Gametel game controller */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
>> USB_DEVICE_ID_GAMETEL_MT_MODE) },
>>
>> /* GoodTouch panels */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
>> USB_DEVICE_ID_GOODTOUCH_000f) },
>>
>> @@ -1098,7 +1099,7 @@ static const struct hid_device_id mt_devices[] = {
>> USB_DEVICE_ID_IDEACOM_IDC6651) },
>>
>> /* Ilitek dual touch panel */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
>> USB_DEVICE_ID_ILITEK_MULTITOUCH) },
>>
>> @@ -1145,7 +1146,7 @@ static const struct hid_device_id mt_devices[] = {
>> USB_DEVICE_ID_PANABOARD_UBT880) },
>>
>> /* Novatek Panel */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
>> USB_DEVICE_ID_NOVATEK_PCT) },
>>
>> @@ -1185,13 +1186,13 @@ static const struct hid_device_id mt_devices[] = {
>> USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
>>
>> /* Stantum panels */
>> - { .driver_data = MT_CLS_ALWAYS_TRUE,
>> + { .driver_data = MT_CLS_DEFAULT,
>> MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
>> USB_DEVICE_ID_MTP)},
>> { .driver_data = MT_CLS_CONFIDENCE,
>> MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
>> USB_DEVICE_ID_MTP_STM)},
>> - { .driver_data = MT_CLS_ALWAYS_TRUE,
>> + { .driver_data = MT_CLS_DEFAULT,
>> MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
>> USB_DEVICE_ID_MTP_SITRONIX)},
>>
>> @@ -1201,48 +1202,48 @@ static const struct hid_device_id mt_devices[] = {
>> USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
>>
>> /* Touch International panels */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
>> USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
>>
>> /* Unitec panels */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
>> USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
>> USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
>> /* XAT */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XAT,
>> USB_DEVICE_ID_XAT_CSR) },
>>
>> /* Xiroku */
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_SPX) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_MPX) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_CSR) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_SPX1) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_MPX1) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_CSR1) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_SPX2) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_MPX2) },
>> - { .driver_data = MT_CLS_DEFAULT,
>> + { .driver_data = MT_CLS_NSMU,
>> MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
>> USB_DEVICE_ID_XIROKU_CSR2) },
>>
>> --
>> 1.8.1
>>
>
> Thanks,
> Henrik
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