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From:   Rogerio Pimentel <rpimentel.silva@gmail.com>
To:     dmitry.torokhov@gmail.com, rpimentel.silva@gmail.com,
        hansemro@outlook.com, marex@denx.de, linux-input@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v2] Input: ili210x - Set the device name according to the device model
Date:   Fri,  3 Sep 2021 13:54:48 -0300
Message-Id: <20210903165448.26545-1-rpimentel.silva@gmail.com>
Precedence: bulk

Adding the device model into the device name is useful when
applications need to set different parameters according to the
touchscreen being used, e.g. X11 calibration points.

Signed-off-by: Rogerio Pimentel <rpimentel.silva@gmail.com>
---

Changes since v1: Get the device ID from touchscreen controller
instead of driver's device list.

 drivers/input/touchscreen/ili210x.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c
index 199cf3daec10..7a897a03ed70 100644
--- a/drivers/input/touchscreen/ili210x.c
+++ b/drivers/input/touchscreen/ili210x.c
@@ -19,10 +19,14 @@
 #define ILI251X_DATA_SIZE1	31
 #define ILI251X_DATA_SIZE2	20
 
+#define ILI_NAME_LEN		27
+#define ILITEK_TS_NAME "Ilitek ILI%x%x Touchscreen"
+
 /* Touchscreen commands */
 #define REG_TOUCHDATA		0x10
 #define REG_PANEL_INFO		0x20
 #define REG_CALIBRATE		0xcc
+#define REG_TS_MODEL		0x61
 
 struct ili2xxx_chip {
 	int (*read_reg)(struct i2c_client *client, u8 reg,
@@ -384,6 +388,8 @@ static int ili210x_i2c_probe(struct i2c_client *client,
 	struct input_dev *input;
 	int error;
 	unsigned int max_xy;
+	unsigned char buf[2];
+	char *model_name;
 
 	dev_dbg(dev, "Probing for ILI210X I2C Touschreen driver");
 
@@ -430,7 +436,10 @@ static int ili210x_i2c_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, priv);
 
 	/* Setup input device */
-	input->name = "ILI210x Touchscreen";
+	input->name = ILITEK_TS_NAME;
+	model_name = (char *)input->name;
+	priv->chip->read_reg(priv->client, REG_TS_MODEL, buf, 2);
+	snprintf(model_name, ILI_NAME_LEN, input->name, buf[1], buf[0]);
 	input->id.bustype = BUS_I2C;
 
 	/* Multi touch */
-- 
2.17.1