NAK: [B/OEM-B][PATCH 2/3] Input: elan_i2c - export the device id whitelist

[You-Sheng Yang]

On 2019-11-20 17:44, Aaron Ma wrote:
> From: Jeffrey Hugo <jeffrey.l.hugo at gmail.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1853246
> 
> Elan_i2c and hid-quirks work in conjunction to decide which devices each
> driver will handle.  Elan_i2c has a whitelist of devices that should be
> consumed by hid-quirks so that there is one master list of devices to
> handoff between the drivers.  Put the ids in a header file so that
> hid-quirks can consume it instead of duplicating the list.
> 
> Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo at gmail.com>
> Acked-by: Benjamin Tissoires <benjamin.tissoires at redhat.com>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>
> (backported from commit 0828c1001399d5c5fcab547ef7b0a29c78d4bdf6)
> Signed-off-by: Aaron Ma <aaron.ma at canonical.com>
> ---
>  drivers/input/mouse/elan_i2c_core.c | 50 +------------------
>  include/linux/input/elan-i2c-ids.h  | 76 +++++++++++++++++++++++++++++
>  2 files changed, 77 insertions(+), 49 deletions(-)
>  create mode 100644 include/linux/input/elan-i2c-ids.h
> 
> diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
> index 52e25f2a1d99..55eed2709e5e 100644
> --- a/drivers/input/mouse/elan_i2c_core.c
> +++ b/drivers/input/mouse/elan_i2c_core.c
> @@ -36,6 +36,7 @@
>  #include <linux/jiffies.h>
>  #include <linux/completion.h>
>  #include <linux/of.h>
> +#include <linux/input/elan-i2c-ids.h>
>  #include <linux/regulator/consumer.h>
>  #include <asm/unaligned.h>
>  
> @@ -1252,55 +1253,6 @@ static const struct i2c_device_id elan_id[] = {
>  MODULE_DEVICE_TABLE(i2c, elan_id);
>  
>  #ifdef CONFIG_ACPI
> -static const struct acpi_device_id elan_acpi_id[] = {
> -	{ "ELAN0000", 0 },
> -	{ "ELAN0100", 0 },
> -	{ "ELAN0600", 0 },
> -	{ "ELAN0601", 0 },
> -	{ "ELAN0602", 0 },
> -	{ "ELAN0603", 0 },
> -	{ "ELAN0604", 0 },
> -	{ "ELAN0605", 0 },
> -	{ "ELAN0606", 0 },
> -	{ "ELAN0607", 0 },
> -	{ "ELAN0608", 0 },
> -	{ "ELAN0609", 0 },
> -	{ "ELAN060B", 0 },
> -	{ "ELAN060C", 0 },
> -	{ "ELAN060F", 0 },
> -	{ "ELAN0610", 0 },
> -	{ "ELAN0611", 0 },
> -	{ "ELAN0612", 0 },
> -	{ "ELAN0615", 0 },
> -	{ "ELAN0616", 0 },
> -	{ "ELAN0617", 0 },
> -	{ "ELAN0618", 0 },
> -	{ "ELAN0619", 0 },
> -	{ "ELAN061A", 0 },
> -/*	{ "ELAN061B", 0 }, not working on the Lenovo Legion Y7000 */

This entry was removed in commit 0c043d70d047 ("Input: elan_i2c - remove
Lenovo Legion Y7000 PnpID") for bug 1845266.

> -	{ "ELAN061C", 0 },
> -	{ "ELAN061D", 0 },
> -	{ "ELAN061E", 0 },
> -	{ "ELAN061F", 0 },
> -	{ "ELAN0620", 0 },
> -	{ "ELAN0621", 0 },
> -	{ "ELAN0622", 0 },
> -	{ "ELAN0623", 0 },
> -	{ "ELAN0624", 0 },
> -	{ "ELAN0625", 0 },
> -	{ "ELAN0626", 0 },
> -	{ "ELAN0627", 0 },
> -	{ "ELAN0628", 0 },
> -	{ "ELAN0629", 0 },
> -	{ "ELAN062A", 0 },
> -	{ "ELAN062B", 0 },
> -	{ "ELAN062C", 0 },
> -	{ "ELAN062D", 0 },
> -	{ "ELAN0631", 0 },
> -	{ "ELAN0632", 0 },
> -	{ "ELAN1000", 0 },
> -	{ }
> -};
>  MODULE_DEVICE_TABLE(acpi, elan_acpi_id);
>  #endif
>  
> diff --git a/include/linux/input/elan-i2c-ids.h b/include/linux/input/elan-i2c-ids.h
> new file mode 100644
> index 000000000000..ceabb01a6a7d
> --- /dev/null
> +++ b/include/linux/input/elan-i2c-ids.h
> @@ -0,0 +1,76 @@
> +/*
> + * Elan I2C/SMBus Touchpad device whitelist
> + *
> + * Copyright (c) 2013 ELAN Microelectronics Corp.
> + *
> + * Author: æ維 (Duson Lin) <dusonlin at emc.com.tw>
> + * Author: KT Liao <kt.liao at emc.com.tw>
> + * Version: 1.6.3
> + *
> + * Based on cyapa driver:
> + * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
> + * copyright (c) 2011-2012 Google, Inc.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + *
> + * Trademarks are the property of their respective owners.
> + */
> +
> +#ifndef __ELAN_I2C_IDS_H
> +#define __ELAN_I2C_IDS_H
> +
> +#include <linux/mod_devicetable.h>
> +
> +static const struct acpi_device_id elan_acpi_id[] = {
> +	{ "ELAN0000", 0 },
> +	{ "ELAN0100", 0 },
> +	{ "ELAN0600", 0 },
> +	{ "ELAN0601", 0 },
> +	{ "ELAN0602", 0 },
> +	{ "ELAN0603", 0 },
> +	{ "ELAN0604", 0 },
> +	{ "ELAN0605", 0 },
> +	{ "ELAN0606", 0 },
> +	{ "ELAN0607", 0 },
> +	{ "ELAN0608", 0 },
> +	{ "ELAN0609", 0 },
> +	{ "ELAN060B", 0 },
> +	{ "ELAN060C", 0 },
> +	{ "ELAN060F", 0 },
> +	{ "ELAN0610", 0 },
> +	{ "ELAN0611", 0 },
> +	{ "ELAN0612", 0 },
> +	{ "ELAN0615", 0 },
> +	{ "ELAN0616", 0 },
> +	{ "ELAN0617", 0 },
> +	{ "ELAN0618", 0 },
> +	{ "ELAN0619", 0 },
> +	{ "ELAN061A", 0 },
> +	{ "ELAN061B", 0 },

But re-added back here. So this will certainly cause regression for bug
1845266.

You-Sheng Yang

> +	{ "ELAN061C", 0 },
> +	{ "ELAN061D", 0 },
> +	{ "ELAN061E", 0 },
> +	{ "ELAN061F", 0 },
> +	{ "ELAN0620", 0 },
> +	{ "ELAN0621", 0 },
> +	{ "ELAN0622", 0 },
> +	{ "ELAN0623", 0 },
> +	{ "ELAN0624", 0 },
> +	{ "ELAN0625", 0 },
> +	{ "ELAN0626", 0 },
> +	{ "ELAN0627", 0 },
> +	{ "ELAN0628", 0 },
> +	{ "ELAN0629", 0 },
> +	{ "ELAN062A", 0 },
> +	{ "ELAN062B", 0 },
> +	{ "ELAN062C", 0 },
> +	{ "ELAN062D", 0 },
> +	{ "ELAN0631", 0 },
> +	{ "ELAN0632", 0 },
> +	{ "ELAN1000", 0 },
> +	{ }
> +};
> +
> +#endif /* __ELAN_I2C_IDS_H */
> 

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