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Date: Wed, 12 Apr 2017 09:00:02 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Masaki Ota <012nexus@...il.com>
Cc: Paul Donohue <linux-kernel@...lsd.com>,
Nick Fletcher <nick.m.fletcher@...il.com>,
Joseph Salisbury <joseph.salisbury@...onical.com>,
Ben Gamari <ben@...rt-cactus.org>,
Michal Hocko <mhocko@...e.com>,
Pali Rohár <pali.rohar@...il.com>,
Henrik Rydberg <rydberg@...math.org>,
"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
lkml <linux-kernel@...r.kernel.org>,
Masaki Ota <masaki.ota@...alps.com>
Subject: Re: [PATCH 1/2] Fix V8 device information issue
On Fri, Mar 17, 2017 at 2:26 PM, Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> On Tue, Mar 14, 2017 at 10:34:12AM +0900, Masaki Ota wrote:
>> From: Masaki Ota <masaki.ota@...alps.com>
>> -Fix the issue that V8(E7=73 03 28) devices are not assined correct device information bit from OTP.
>> -Specified correct OTP bit for the V8 device setting of Button pad, DualPoint and Touchpad size.
>> -Deleted extra code from alps_v8_protocol_data decision process.
>>
>> Signed-off-by: Masaki Ota <masaki.ota@...alps.com>
>>
>> Acked-by: Pali Rohar <pali.rohar@...il.com>
>
> Reworded commit message, marked for stable and applied, thank you.
>
It looks like we may have a regression here (or in the 2nd patch):
https://bugzilla.kernel.org/show_bug.cgi?id=195215
>> ---
>> drivers/input/mouse/alps.c | 66 +++++++++++++++++++++++++++++++++++-----------
>> drivers/input/mouse/alps.h | 11 ++++++++
>> 2 files changed, 61 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
>> index e761955..253f742 100644
>> --- a/drivers/input/mouse/alps.c
>> +++ b/drivers/input/mouse/alps.c
>> @@ -2467,14 +2467,34 @@ static int alps_update_device_area_ss4_v2(unsigned char otp[][4],
>> int num_y_electrode;
>> int x_pitch, y_pitch, x_phys, y_phys;
>>
>> - num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
>> - num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);
>> + 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) * SS4_COUNT_PER_ELECTRODE;
>> - priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
>> + 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;
>> + x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM;
>> + y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM;
>> +
>> + } else {
>> + 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[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
>> + y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;
>> + }
>>
>> x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */
>> y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */
>> @@ -2490,7 +2510,10 @@ static int alps_update_btn_info_ss4_v2(unsigned char otp[][4],
>> {
>> unsigned char is_btnless;
>>
>> - is_btnless = (otp[1][1] >> 3) & 0x01;
>> + if (IS_SS4PLUS_DEV(priv->dev_id))
>> + is_btnless = (otp[1][0] >> 1) & 0x01;
>> + else
>> + is_btnless = (otp[1][1] >> 3) & 0x01;
>>
>> if (is_btnless)
>> priv->flags |= ALPS_BUTTONPAD;
>> @@ -2498,6 +2521,21 @@ static int alps_update_btn_info_ss4_v2(unsigned char otp[][4],
>> return 0;
>> }
>>
>> +static int alps_update_dual_info_ss4_v2(unsigned char otp[][4],
>> + struct alps_data *priv)
>> +{
>> + bool is_dual = false;
>> +
>> + if (IS_SS4PLUS_DEV(priv->dev_id))
>> + is_dual = (otp[0][0] >> 4) & 0x01;
>> +
>> + if (is_dual)
>> + priv->flags |= ALPS_DUALPOINT |
>> + ALPS_DUALPOINT_WITH_PRESSURE;
>> +
>> + return 0;
>> +}
>> +
>> static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
>> struct alps_data *priv)
>> {
>> @@ -2513,6 +2551,8 @@ static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
>>
>> alps_update_btn_info_ss4_v2(otp, priv);
>>
>> + alps_update_dual_info_ss4_v2(otp, priv);
>> +
>> return 0;
>> }
>>
>> @@ -2758,10 +2798,6 @@ static int alps_set_protocol(struct psmouse *psmouse,
>> if (alps_set_defaults_ss4_v2(psmouse, priv))
>> return -EIO;
>>
>> - if (priv->fw_ver[1] == 0x1)
>> - priv->flags |= ALPS_DUALPOINT |
>> - ALPS_DUALPOINT_WITH_PRESSURE;
>> -
>> break;
>> }
>>
>> @@ -2831,10 +2867,7 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
>> ec[2] >= 0x90 && ec[2] <= 0x9d) {
>> protocol = &alps_v3_protocol_data;
>> } else if (e7[0] == 0x73 && e7[1] == 0x03 &&
>> - e7[2] == 0x14 && ec[1] == 0x02) {
>> - protocol = &alps_v8_protocol_data;
>> - } else if (e7[0] == 0x73 && e7[1] == 0x03 &&
>> - e7[2] == 0x28 && ec[1] == 0x01) {
>> + (e7[2] == 0x14 || e7[2] == 0x28)) {
>> protocol = &alps_v8_protocol_data;
>> } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) {
>> protocol = &alps_v9_protocol_data;
>> @@ -2850,7 +2883,8 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
>> }
>>
>> if (priv) {
>> - /* Save the Firmware version */
>> + /* Save Device ID and Firmware version */
>> + memcpy(priv->dev_id, e7, 3);
>> memcpy(priv->fw_ver, ec, 3);
>> error = alps_set_protocol(psmouse, priv, protocol);
>> if (error)
>> diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h
>> index dea3163..ed2d687 100644
>> --- a/drivers/input/mouse/alps.h
>> +++ b/drivers/input/mouse/alps.h
>> @@ -55,6 +55,16 @@ enum SS4_PACKET_ID {
>>
>> #define SS4_MASK_NORMAL_BUTTONS 0x07
>>
>> +#define SS4PLUS_COUNT_PER_ELECTRODE 128
>> +#define SS4PLUS_NUMSENSOR_XOFFSET 16
>> +#define SS4PLUS_NUMSENSOR_YOFFSET 5
>> +#define SS4PLUS_MIN_PITCH_MM 37
>> +
>> +#define IS_SS4PLUS_DEV(_b) (((_b[0]) == 0x73) && \
>> + ((_b[1]) == 0x03) && \
>> + ((_b[2]) == 0x28) \
>> + )
>> +
>> #define SS4_IS_IDLE_V2(_b) (((_b[0]) == 0x18) && \
>> ((_b[1]) == 0x10) && \
>> ((_b[2]) == 0x00) && \
>> @@ -279,6 +289,7 @@ struct alps_data {
>> int addr_command;
>> u16 proto_version;
>> u8 byte0, mask0;
>> + u8 dev_id[3];
>> u8 fw_ver[3];
>> int flags;
>> int x_max;
>> --
>> 2.9.3
>>
>
> --
> Dmitry
--
Dmitry
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