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Date: Mon, 13 Mar 2017 15:37:19 +0100
From: Pali Rohár <pali.rohar@...il.com>
To: Masaki Ota <012nexus@...il.com>
Cc: dmitry.torokhov@...il.com, linux-kernel@...lsd.com,
nick.m.fletcher@...il.com, joseph.salisbury@...onical.com,
ben@...rt-cactus.org, mhocko@...e.com, rydberg@...math.org,
linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
masaki.ota@...alps.com
Subject: Re: [PATCH 1/2] Fix V8 device information issue
On Monday 13 March 2017 16:04:09 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>
> ---
> 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..a70c860 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)
> +{
> + unsigned char is_dual = 0;
Hi! Type of is_dual is just bool, not unsigned char.
Otherwise OK and you can add my Acked-By.
> + 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;
--
Pali Rohár
pali.rohar@...il.com
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