linux-kernel - Re: [PATCH 1/2] hwmon: tmp401: add support for TI TMP435

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Message-ID: <54806D6C.7060009@roeck-us.net>
Date:	Thu, 04 Dec 2014 06:19:24 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	Bartosz Golaszewski <bgolaszewski@...libre.com>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Benoit Cousson <bcousson@...libre.com>,
	Patrick Titiano <ptitiano@...libre.com>,
	LM Sensors <lm-sensors@...sensors.org>
Subject: Re: [PATCH 1/2] hwmon: tmp401: add support for TI TMP435

On 12/04/2014 01:57 AM, Bartosz Golaszewski wrote:
> From: Patrick Titiano <ptitiano@...libre.com>
>
> Signed-off-by: Patrick Titiano <ptitiano@...libre.com>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> ---
>   drivers/hwmon/tmp401.c | 16 ++++++++++++++--

Please also update Kconfig and Documentation/hwmon/tmp401.

>   1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
> index 7fa6e7d..5a72d7f 100644
> --- a/drivers/hwmon/tmp401.c
> +++ b/drivers/hwmon/tmp401.c
> @@ -8,6 +8,9 @@
>    * Cleanup and support for TMP431 and TMP432 by Guenter Roeck
>    * Copyright (c) 2013 Guenter Roeck <linux@...ck-us.net>
>    *
> + * Support for TMP435 by Patrick Titiano
> + * Copyright (c) 2014 Patrick Titiano <ptitiano@...libre.com>
> + *
>    * This program is free software; you can redistribute it and/or modify
>    * it under the terms of the GNU General Public License as published by
>    * the Free Software Foundation; either version 2 of the License, or
> @@ -46,7 +49,7 @@
>   /* Addresses to scan */
>   static const unsigned short normal_i2c[] = { 0x4c, 0x4d, 0x4e, I2C_CLIENT_END };
>
> -enum chips { tmp401, tmp411, tmp431, tmp432 };
> +enum chips { tmp401, tmp411, tmp431, tmp432, tmp435 };
>
>   /*
>    * The TMP401 registers, note some registers have different addresses for
> @@ -136,6 +139,7 @@ static const u8 TMP432_STATUS_REG[] = {
>   #define TMP411C_DEVICE_ID			0x10
>   #define TMP431_DEVICE_ID			0x31
>   #define TMP432_DEVICE_ID			0x32
> +#define TMP435_DEVICE_ID			0x35

The datasheet claims otherwise (0x31, specifically).
Is this based on real chip information ?
Can you send me the output from i2cdump for the chip ?

Thanks,
Guenter

>
>   /*
>    * Driver data (common to all clients)
> @@ -146,6 +150,7 @@ static const struct i2c_device_id tmp401_id[] = {
>   	{ "tmp411", tmp411 },
>   	{ "tmp431", tmp431 },
>   	{ "tmp432", tmp432 },
> +	{ "tmp435", tmp435 },
>   	{ }
>   };
>   MODULE_DEVICE_TABLE(i2c, tmp401_id);
> @@ -684,6 +689,11 @@ static int tmp401_detect(struct i2c_client *client,
>   			return -ENODEV;
>   		kind = tmp432;
>   		break;
> +	case TMP435_DEVICE_ID:
> +		if (client->addr != 0x4c)
> +			return -ENODEV;
> +		kind = tmp435;
> +		break;
>   	default:
>   		return -ENODEV;
>   	}
> @@ -705,7 +715,9 @@ static int tmp401_detect(struct i2c_client *client,
>   static int tmp401_probe(struct i2c_client *client,
>   			const struct i2c_device_id *id)
>   {
> -	const char *names[] = { "TMP401", "TMP411", "TMP431", "TMP432" };
> +	static const char *names[] = {
> +		"TMP401", "TMP411", "TMP431", "TMP432", "TMP435"
> +	};
>   	struct device *dev = &client->dev;
>   	struct device *hwmon_dev;
>   	struct tmp401_data *data;
>

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