Input: mms114 - support MMS134S

The MMS134S like the MMS136 has an event size of 6 bytes.

After this patch, the touchscreen on the Samsung SGH-I407
works fine with PostmarketOS.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210706235951.189289-1-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/mms114.c b/drivers/input/touchscreen/mms114.c
index 0efd1a1..9fa3b0e 100644 (file)
--- a/drivers/input/touchscreen/mms114.c
+++ b/drivers/input/touchscreen/mms114.c
@@ -54,6 +54,7 @@
 
 enum mms_type {
        TYPE_MMS114     = 114,
+       TYPE_MMS134S    = 134,
        TYPE_MMS136     = 136,
        TYPE_MMS152     = 152,
        TYPE_MMS345L    = 345,
@@ -212,7 +213,7 @@ static irqreturn_t mms114_interrupt(int irq, void *dev_id)
                goto out;
 
        /* MMS136 has slightly different event size */
-       if (data->type == TYPE_MMS136)
+       if (data->type == TYPE_MMS134S || data->type == TYPE_MMS136)
                touch_size = packet_size / MMS136_EVENT_SIZE;
        else
                touch_size = packet_size / MMS114_EVENT_SIZE;
@@ -281,6 +282,7 @@ static int mms114_get_version(struct mms114_data *data)
                break;
 
        case TYPE_MMS114:
+       case TYPE_MMS134S:
        case TYPE_MMS136:
                error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
                if (error)
@@ -304,8 +306,9 @@ static int mms114_setup_regs(struct mms114_data *data)
        if (error < 0)
                return error;
 
-       /* Only MMS114 and MMS136 have configuration and power on registers */
-       if (data->type != TYPE_MMS114 && data->type != TYPE_MMS136)
+       /* MMS114, MMS134S and MMS136 have configuration and power on registers */
+       if (data->type != TYPE_MMS114 && data->type != TYPE_MMS134S &&
+           data->type != TYPE_MMS136)
                return 0;
 
        error = mms114_set_active(data, true);
@@ -487,7 +490,8 @@ static int mms114_probe(struct i2c_client *client,
                                     0, data->props.max_y, 0, 0);
        }
 
-       if (data->type == TYPE_MMS114 || data->type == TYPE_MMS136) {
+       if (data->type == TYPE_MMS114 || data->type == TYPE_MMS134S ||
+           data->type == TYPE_MMS136) {
                /*
                 * The firmware handles movement and pressure fuzz, so
                 * don't duplicate that in software.
@@ -611,6 +615,9 @@ static const struct of_device_id mms114_dt_match[] = {
        {
                .compatible = "melfas,mms114",
                .data = (void *)TYPE_MMS114,
+       }, {
+               .compatible = "melfas,mms134s",
+               .data = (void *)TYPE_MMS134S,
        }, {
                .compatible = "melfas,mms136",
                .data = (void *)TYPE_MMS136,