diff mbox

[v6,5/6] i2c: at91: print hardware version

Message ID d1fbf4bce3b470409ef3198f551cfc3f8f22ac78.1433866582.git.cyrille.pitchen@atmel.com
State Accepted
Headers show

Commit Message

Cyrille Pitchen June 9, 2015, 4:22 p.m. UTC
The probe() function now prints the hardware version of the I2C
controller.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
---
 drivers/i2c/busses/i2c-at91.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Sergei Shtylyov June 9, 2015, 7:46 p.m. UTC | #1
Hello.

On 06/09/2015 07:22 PM, Cyrille Pitchen wrote:

> The probe() function now prints the hardware version of the I2C
> controller.

> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
> ---
>   drivers/i2c/busses/i2c-at91.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)

> diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
> index 817ae69..6e88b30 100644
> --- a/drivers/i2c/busses/i2c-at91.c
> +++ b/drivers/i2c/busses/i2c-at91.c
[...]
> @@ -908,7 +910,8 @@ static int at91_twi_probe(struct platform_device *pdev)
>   		return rc;
>   	}
>
> -	dev_info(dev->dev, "AT91 i2c bus driver.\n");
> +	dev_info(dev->dev, "AT91 i2c bus driver (version: %#x).\n",

    It looks as if you rather print the driver's version. :-)

> +		 at91_twi_read(dev, AT91_TWI_VER));
>   	return 0;
>   }

WBR, Sergei

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ludovic.desroches@atmel.com June 10, 2015, 8:05 a.m. UTC | #2
On Tue, Jun 09, 2015 at 10:46:20PM +0300, Sergei Shtylyov wrote:
> Hello.
> 
> On 06/09/2015 07:22 PM, Cyrille Pitchen wrote:
> 
> >The probe() function now prints the hardware version of the I2C
> >controller.
> 
> >Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
> >---
> >  drivers/i2c/busses/i2c-at91.c | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> >diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
> >index 817ae69..6e88b30 100644
> >--- a/drivers/i2c/busses/i2c-at91.c
> >+++ b/drivers/i2c/busses/i2c-at91.c
> [...]
> >@@ -908,7 +910,8 @@ static int at91_twi_probe(struct platform_device *pdev)
> >  		return rc;
> >  	}
> >
> >-	dev_info(dev->dev, "AT91 i2c bus driver.\n");
> >+	dev_info(dev->dev, "AT91 i2c bus driver (version: %#x).\n",
> 
>    It looks as if you rather print the driver's version. :-)

From my point of view, having a version number for a Linux driver would
be strange so it's not confusing.

> 
> >+		 at91_twi_read(dev, AT91_TWI_VER));
> >  	return 0;
> >  }
> 
> WBR, Sergei
> 

Regards

Ludovic
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Sergei Shtylyov June 10, 2015, 12:10 p.m. UTC | #3
Hello.

On 6/10/2015 11:05 AM, Ludovic Desroches wrote:

>>> The probe() function now prints the hardware version of the I2C
>>> controller.

>>> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
>>> ---
>>>   drivers/i2c/busses/i2c-at91.c | 5 ++++-
>>>   1 file changed, 4 insertions(+), 1 deletion(-)

>>> diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
>>> index 817ae69..6e88b30 100644
>>> --- a/drivers/i2c/busses/i2c-at91.c
>>> +++ b/drivers/i2c/busses/i2c-at91.c
>> [...]
>>> @@ -908,7 +910,8 @@ static int at91_twi_probe(struct platform_device *pdev)
>>>   		return rc;
>>>   	}
>>>
>>> -	dev_info(dev->dev, "AT91 i2c bus driver.\n");
>>> +	dev_info(dev->dev, "AT91 i2c bus driver (version: %#x).\n",

>>     It looks as if you rather print the driver's version. :-)

>  From my point of view, having a version number for a Linux driver would
> be strange

    Not everybody shares your opinion.

> so it's not confusing.

    Oh, it is, from the purely grammatical PoV. Addiung "hardware " to 
"version" (or not mentioning the driver at all) would clear up that confusion.

>>
>>> +		 at91_twi_read(dev, AT91_TWI_VER));
>>>   	return 0;
>>>   }

>> WBR, Sergei

> Regards
> Ludovic

WBR, Sergei

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Wolfram Sang June 10, 2015, 12:15 p.m. UTC | #4
> >>>-	dev_info(dev->dev, "AT91 i2c bus driver.\n");
> >>>+	dev_info(dev->dev, "AT91 i2c bus driver (version: %#x).\n",
> 
> >>    It looks as if you rather print the driver's version. :-)
> 
> > From my point of view, having a version number for a Linux driver would
> >be strange
> 
>    Not everybody shares your opinion.

I tend to agree with Sergei but let's keep things simple: I'll make it
"hw version" before applying.
diff mbox

Patch

diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 817ae69..6e88b30 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -85,6 +85,8 @@ 
 #define	AT91_TWI_ACR_DATAL(len)	((len) & 0xff)
 #define	AT91_TWI_ACR_DIR	BIT(8)
 
+#define	AT91_TWI_VER		0x00fc	/* Version Register */
+
 struct at91_twi_pdata {
 	unsigned clk_max_div;
 	unsigned clk_offset;
@@ -908,7 +910,8 @@  static int at91_twi_probe(struct platform_device *pdev)
 		return rc;
 	}
 
-	dev_info(dev->dev, "AT91 i2c bus driver.\n");
+	dev_info(dev->dev, "AT91 i2c bus driver (version: %#x).\n",
+		 at91_twi_read(dev, AT91_TWI_VER));
 	return 0;
 }