linux-kernel - Re: [PATCH] Input: ili210x - Set the device name according to the device model

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Message-ID: <CAOkaPuVV3HK8OvVMQxjRPh1S_pFjvbEgsR-5UB51H8aguCw6Lw@mail.gmail.com>
Date:   Thu, 2 Sep 2021 09:39:20 -0300
From:   Rogerio Pimentel <rpimentel.silva@...il.com>
To:     Marek Vasut <marex@...x.de>
Cc:     dmitry.torokhov@...il.com, hansemro@...look.com,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: ili210x - Set the device name according to the
 device model

On Wed, Sep 1, 2021 at 5:48 PM Marek Vasut <marex@...x.de> wrote:
>
> On 9/1/21 10:27 PM, Rogerio Pimentel wrote:
> > On Wed, Sep 1, 2021 at 4:46 PM Marek Vasut <marex@...x.de> wrote:
> >>
> >> On 9/1/21 9:22 PM, Rogerio Pimentel wrote:
> >>
> >> [...]
> >>
> >>> diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c
> >>> index 30576a5f2f04..ca7af4a6f588 100644
> >>> --- a/drivers/input/touchscreen/ili210x.c
> >>> +++ b/drivers/input/touchscreen/ili210x.c
> >>> @@ -19,6 +19,8 @@
> >>>    #define ILI251X_DATA_SIZE1  31
> >>>    #define ILI251X_DATA_SIZE2  20
> >>>
> >>> +#define ILI_NAME_LEN         27
> >>> +
> >>>    /* Touchscreen commands */
> >>>    #define REG_TOUCHDATA               0x10
> >>>    #define REG_PANEL_INFO              0x20
> >>> @@ -394,6 +396,7 @@ static int ili210x_i2c_probe(struct i2c_client *client,
> >>>        struct input_dev *input;
> >>>        int error;
> >>>        unsigned int max_xy;
> >>> +     char *model_name;
> >>>
> >>>        dev_dbg(dev, "Probing for ILI210X I2C Touschreen driver");
> >>>
> >>> @@ -440,7 +443,11 @@ static int ili210x_i2c_probe(struct i2c_client *client,
> >>>        i2c_set_clientdata(client, priv);
> >>>
> >>>        /* Setup input device */
> >>> -     input->name = "ILI210x Touchscreen";
> >>> +     input->name = "Ilitek         Touchscreen";
> >>> +     model_name = (char *)input->name;
> >>> +     snprintf(model_name, ILI_NAME_LEN, "Ilitek %s Touchscreen",
> >>
> >> Which ilitek devices do you have available exactly ?
> >>
> >> There is a firmware interface which does report the device type, but I
> >> don't know whether it works on all the ilitek touchscreen devices. If it
> >> does, then it could be used here to pull the type from the firmware and
> >> then use this instead
> >>
> >> snprintf(model_name, ILI_NAME_LEN, "Ilitek ILI%04x Touchscreen", type);
> >>
> >> Try this command against the touch controller, it sends it command 0x61
> >> and reads two bytes of the reply:
> >> i2ctransfer -f -y 1 w1@...1 0x61 r2
> >> 0x10 0x25 # <---- on ILI2510 it reports 0x25 0x10 in reverse
> >
> > Thanks for the comments and suggestions. I'll make the changes and send V2.
>
> Can you tell which ILI2xxx touch controller you have exactly ?

Now I have only the ILI2511. Will also have to support ILI2510 and ILI2118.

> Can you share the output of the 'i2ctransfer' (from i2c-tools) command
> above ?

# i2ctransfer -f -y 3 w1@...1 0x61 r2
0x11 0x25