Input: ALPS - fix V8+ protocol handling (73 03 28)

Devices identified as E7="73 03 28" use slightly modified version of V8
protocol, with lower count per electrode, different offsets, and different
feature bits in OTP data.

Fixes: aeaa881f9b17 ("Input: ALPS - set DualPoint flag for 74 03 28 devices")
Signed-off-by: Masaki Ota <masaki.ota@jp.alps.com>
Acked-by: Pali Rohar <pali.rohar@gmail.com>
Tested-by: Paul Donohue <linux-kernel@PaulSD.com>
Tested-by: Nick Fletcher <nick.m.fletcher@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 72b28ebfe360030cbeeadec8a52385a9de09a7f0..262d9b620fcf6ea20d5c3d579a8ca33b1609077c 100644 (file)
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -2462,14 +2462,34 @@ 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 */
@@ -2485,7 +2505,10 @@ 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;
@@ -2493,6 +2516,21 @@ 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)
 {
@@ -2508,6 +2546,8 @@ 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;
 }
 
@@ -2753,10 +2793,6 @@ 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;
        }
 
@@ -2827,10 +2863,7 @@ 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 {
                        psmouse_dbg(psmouse,
@@ -2840,7 +2873,8 @@ 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 6d279aa27cb9a10d70a2e732fe9599297883cbc0..4334f2805d93c7a3e8454a8cf0d950a14999278c 100644 (file)
--- a/drivers/input/mouse/alps.h
+++ b/drivers/input/mouse/alps.h
@@ -54,6 +54,16 @@ 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) &&           \
@@ -283,6 +293,7 @@ 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;