linux-kernel - Re: [PATCH v8 1/3] usb: typec: tcpci: move tcpci.h to include/linux/usb/ directory

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Message-ID: <0fa1e65c-949f-f492-f769-b1f5ed3b181d@roeck-us.net>
Date:   Tue, 8 Mar 2022 06:41:27 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Xin Ji <xji@...logixsemi.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        bliang@...logixsemi.com, qwen@...logixsemi.com,
        jli@...logixsemi.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v8 1/3] usb: typec: tcpci: move tcpci.h to
 include/linux/usb/ directory

On 3/8/22 02:10, Heikki Krogerus wrote:
> On Tue, Mar 08, 2022 at 03:34:28PM +0800, Xin Ji wrote:
>> As for convenience use TCPCI register definition, move tcpci.h to
>> include/linux/usb/ directory.
> 
> To be honest, I was still hoping for a better explanation here.
> 
> The reason why this header is made global is because some USB PD
> controllers - PD controllers consisting of a microcontroller
> (acting as the TCPM) and a port controller (TCPC) - may require that
> the driver for the PD controller accesses directly also the on-chip
> port controller in some cases.
> 
> I was hoping that that was explained in the commit message somehow.
> 

Same here.

Guenter

>> Signed-off-by: Xin Ji <xji@...logixsemi.com>
>>
>> ---
>> V7 -> V8: Fix Guanter's comment, remove unnecessary explain.
>> ---
>>   drivers/usb/typec/tcpm/tcpci.c                        | 3 +--
>>   drivers/usb/typec/tcpm/tcpci_maxim.c                  | 3 +--
>>   drivers/usb/typec/tcpm/tcpci_mt6360.c                 | 3 +--
>>   drivers/usb/typec/tcpm/tcpci_rt1711h.c                | 2 +-
>>   {drivers/usb/typec/tcpm => include/linux/usb}/tcpci.h | 1 +
>>   5 files changed, 5 insertions(+), 7 deletions(-)
>>   rename {drivers/usb/typec/tcpm => include/linux/usb}/tcpci.h (99%)
>>
>> diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
>> index e07d26a3cd8e..9c907296596f 100644
>> --- a/drivers/usb/typec/tcpm/tcpci.c
>> +++ b/drivers/usb/typec/tcpm/tcpci.c
>> @@ -13,11 +13,10 @@
>>   #include <linux/property.h>
>>   #include <linux/regmap.h>
>>   #include <linux/usb/pd.h>
>> +#include <linux/usb/tcpci.h>
>>   #include <linux/usb/tcpm.h>
>>   #include <linux/usb/typec.h>
>>   
>> -#include "tcpci.h"
>> -
>>   #define	PD_RETRY_COUNT_DEFAULT			3
>>   #define	PD_RETRY_COUNT_3_0_OR_HIGHER		2
>>   #define	AUTO_DISCHARGE_DEFAULT_THRESHOLD_MV	3500
>> diff --git a/drivers/usb/typec/tcpm/tcpci_maxim.c b/drivers/usb/typec/tcpm/tcpci_maxim.c
>> index df2505570f07..4b6705f3d7b7 100644
>> --- a/drivers/usb/typec/tcpm/tcpci_maxim.c
>> +++ b/drivers/usb/typec/tcpm/tcpci_maxim.c
>> @@ -11,11 +11,10 @@
>>   #include <linux/module.h>
>>   #include <linux/regmap.h>
>>   #include <linux/usb/pd.h>
>> +#include <linux/usb/tcpci.h>
>>   #include <linux/usb/tcpm.h>
>>   #include <linux/usb/typec.h>
>>   
>> -#include "tcpci.h"
>> -
>>   #define PD_ACTIVITY_TIMEOUT_MS				10000
>>   
>>   #define TCPC_VENDOR_ALERT				0x80
>> diff --git a/drivers/usb/typec/tcpm/tcpci_mt6360.c b/drivers/usb/typec/tcpm/tcpci_mt6360.c
>> index f1bd9e09bc87..9e0338bce7ef 100644
>> --- a/drivers/usb/typec/tcpm/tcpci_mt6360.c
>> +++ b/drivers/usb/typec/tcpm/tcpci_mt6360.c
>> @@ -11,10 +11,9 @@
>>   #include <linux/of.h>
>>   #include <linux/platform_device.h>
>>   #include <linux/regmap.h>
>> +#include <linux/usb/tcpci.h>
>>   #include <linux/usb/tcpm.h>
>>   
>> -#include "tcpci.h"
>> -
>>   #define MT6360_REG_VCONNCTRL1	0x8C
>>   #define MT6360_REG_MODECTRL2	0x8F
>>   #define MT6360_REG_SWRESET	0xA0
>> diff --git a/drivers/usb/typec/tcpm/tcpci_rt1711h.c b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
>> index b56a0880a044..3291ca4948da 100644
>> --- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c
>> +++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c
>> @@ -10,9 +10,9 @@
>>   #include <linux/i2c.h>
>>   #include <linux/interrupt.h>
>>   #include <linux/gpio/consumer.h>
>> +#include <linux/usb/tcpci.h>
>>   #include <linux/usb/tcpm.h>
>>   #include <linux/regmap.h>
>> -#include "tcpci.h"
>>   
>>   #define RT1711H_VID		0x29CF
>>   #define RT1711H_PID		0x1711
>> diff --git a/drivers/usb/typec/tcpm/tcpci.h b/include/linux/usb/tcpci.h
>> similarity index 99%
>> rename from drivers/usb/typec/tcpm/tcpci.h
>> rename to include/linux/usb/tcpci.h
>> index b2edd45f13c6..20c0bedb8ec8 100644
>> --- a/drivers/usb/typec/tcpm/tcpci.h
>> +++ b/include/linux/usb/tcpci.h
>> @@ -9,6 +9,7 @@
>>   #define __LINUX_USB_TCPCI_H
>>   
>>   #include <linux/usb/typec.h>
>> +#include <linux/usb/tcpm.h>
>>   
>>   #define TCPC_VENDOR_ID			0x0
>>   #define TCPC_PRODUCT_ID			0x2
>> -- 
>> 2.25.1
>