diff mbox

[RFCv2,2/5] drm/bridge: dw_hdmi: remove CEC engine register definitions

Message ID 1479136968-24477-3-git-send-email-hverkuil@xs4all.nl (mailing list archive)
State New, archived
Headers show

Commit Message

Hans Verkuil Nov. 14, 2016, 3:22 p.m. UTC
From: Russell King <rmk+kernel@arm.linux.org.uk>

We don't need the CEC engine register definitions, so let's remove them.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 drivers/gpu/drm/bridge/dw-hdmi.h | 45 ----------------------------------------
 1 file changed, 45 deletions(-)

Comments

Russell King (Oracle) Nov. 14, 2016, 3:39 p.m. UTC | #1
I can't comment on these, you've not included me in patch 1 nor the
covering message.

On Mon, Nov 14, 2016 at 04:22:45PM +0100, Hans Verkuil wrote:
> From: Russell King <rmk+kernel@arm.linux.org.uk>
> 
> We don't need the CEC engine register definitions, so let's remove them.
> 
> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
> ---
>  drivers/gpu/drm/bridge/dw-hdmi.h | 45 ----------------------------------------
>  1 file changed, 45 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/dw-hdmi.h b/drivers/gpu/drm/bridge/dw-hdmi.h
> index fc9a560..26d6845 100644
> --- a/drivers/gpu/drm/bridge/dw-hdmi.h
> +++ b/drivers/gpu/drm/bridge/dw-hdmi.h
> @@ -478,51 +478,6 @@
>  #define HDMI_A_PRESETUP                         0x501A
>  #define HDMI_A_SRM_BASE                         0x5020
>  
> -/* CEC Engine Registers */
> -#define HDMI_CEC_CTRL                           0x7D00
> -#define HDMI_CEC_STAT                           0x7D01
> -#define HDMI_CEC_MASK                           0x7D02
> -#define HDMI_CEC_POLARITY                       0x7D03
> -#define HDMI_CEC_INT                            0x7D04
> -#define HDMI_CEC_ADDR_L                         0x7D05
> -#define HDMI_CEC_ADDR_H                         0x7D06
> -#define HDMI_CEC_TX_CNT                         0x7D07
> -#define HDMI_CEC_RX_CNT                         0x7D08
> -#define HDMI_CEC_TX_DATA0                       0x7D10
> -#define HDMI_CEC_TX_DATA1                       0x7D11
> -#define HDMI_CEC_TX_DATA2                       0x7D12
> -#define HDMI_CEC_TX_DATA3                       0x7D13
> -#define HDMI_CEC_TX_DATA4                       0x7D14
> -#define HDMI_CEC_TX_DATA5                       0x7D15
> -#define HDMI_CEC_TX_DATA6                       0x7D16
> -#define HDMI_CEC_TX_DATA7                       0x7D17
> -#define HDMI_CEC_TX_DATA8                       0x7D18
> -#define HDMI_CEC_TX_DATA9                       0x7D19
> -#define HDMI_CEC_TX_DATA10                      0x7D1a
> -#define HDMI_CEC_TX_DATA11                      0x7D1b
> -#define HDMI_CEC_TX_DATA12                      0x7D1c
> -#define HDMI_CEC_TX_DATA13                      0x7D1d
> -#define HDMI_CEC_TX_DATA14                      0x7D1e
> -#define HDMI_CEC_TX_DATA15                      0x7D1f
> -#define HDMI_CEC_RX_DATA0                       0x7D20
> -#define HDMI_CEC_RX_DATA1                       0x7D21
> -#define HDMI_CEC_RX_DATA2                       0x7D22
> -#define HDMI_CEC_RX_DATA3                       0x7D23
> -#define HDMI_CEC_RX_DATA4                       0x7D24
> -#define HDMI_CEC_RX_DATA5                       0x7D25
> -#define HDMI_CEC_RX_DATA6                       0x7D26
> -#define HDMI_CEC_RX_DATA7                       0x7D27
> -#define HDMI_CEC_RX_DATA8                       0x7D28
> -#define HDMI_CEC_RX_DATA9                       0x7D29
> -#define HDMI_CEC_RX_DATA10                      0x7D2a
> -#define HDMI_CEC_RX_DATA11                      0x7D2b
> -#define HDMI_CEC_RX_DATA12                      0x7D2c
> -#define HDMI_CEC_RX_DATA13                      0x7D2d
> -#define HDMI_CEC_RX_DATA14                      0x7D2e
> -#define HDMI_CEC_RX_DATA15                      0x7D2f
> -#define HDMI_CEC_LOCK                           0x7D30
> -#define HDMI_CEC_WKUPCTRL                       0x7D31
> -
>  /* I2C Master Registers (E-DDC) */
>  #define HDMI_I2CM_SLAVE                         0x7E00
>  #define HDMI_I2CM_ADDRESS                       0x7E01
> -- 
> 2.8.1
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Hans Verkuil Nov. 14, 2016, 3:42 p.m. UTC | #2
You're CC-ed for all, so if you don't receive it in the next 15 minutes
let me know and I'll forward it to you. But my guess is that the mails were
delayed for some reason and that they simply haven't arrived yet.

	Hans

On 11/14/2016 04:39 PM, Russell King - ARM Linux wrote:
> I can't comment on these, you've not included me in patch 1 nor the
> covering message.
> 
> On Mon, Nov 14, 2016 at 04:22:45PM +0100, Hans Verkuil wrote:
>> From: Russell King <rmk+kernel@arm.linux.org.uk>
>>
>> We don't need the CEC engine register definitions, so let's remove them.
>>
>> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
>> ---
>>  drivers/gpu/drm/bridge/dw-hdmi.h | 45 ----------------------------------------
>>  1 file changed, 45 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/bridge/dw-hdmi.h b/drivers/gpu/drm/bridge/dw-hdmi.h
>> index fc9a560..26d6845 100644
>> --- a/drivers/gpu/drm/bridge/dw-hdmi.h
>> +++ b/drivers/gpu/drm/bridge/dw-hdmi.h
>> @@ -478,51 +478,6 @@
>>  #define HDMI_A_PRESETUP                         0x501A
>>  #define HDMI_A_SRM_BASE                         0x5020
>>  
>> -/* CEC Engine Registers */
>> -#define HDMI_CEC_CTRL                           0x7D00
>> -#define HDMI_CEC_STAT                           0x7D01
>> -#define HDMI_CEC_MASK                           0x7D02
>> -#define HDMI_CEC_POLARITY                       0x7D03
>> -#define HDMI_CEC_INT                            0x7D04
>> -#define HDMI_CEC_ADDR_L                         0x7D05
>> -#define HDMI_CEC_ADDR_H                         0x7D06
>> -#define HDMI_CEC_TX_CNT                         0x7D07
>> -#define HDMI_CEC_RX_CNT                         0x7D08
>> -#define HDMI_CEC_TX_DATA0                       0x7D10
>> -#define HDMI_CEC_TX_DATA1                       0x7D11
>> -#define HDMI_CEC_TX_DATA2                       0x7D12
>> -#define HDMI_CEC_TX_DATA3                       0x7D13
>> -#define HDMI_CEC_TX_DATA4                       0x7D14
>> -#define HDMI_CEC_TX_DATA5                       0x7D15
>> -#define HDMI_CEC_TX_DATA6                       0x7D16
>> -#define HDMI_CEC_TX_DATA7                       0x7D17
>> -#define HDMI_CEC_TX_DATA8                       0x7D18
>> -#define HDMI_CEC_TX_DATA9                       0x7D19
>> -#define HDMI_CEC_TX_DATA10                      0x7D1a
>> -#define HDMI_CEC_TX_DATA11                      0x7D1b
>> -#define HDMI_CEC_TX_DATA12                      0x7D1c
>> -#define HDMI_CEC_TX_DATA13                      0x7D1d
>> -#define HDMI_CEC_TX_DATA14                      0x7D1e
>> -#define HDMI_CEC_TX_DATA15                      0x7D1f
>> -#define HDMI_CEC_RX_DATA0                       0x7D20
>> -#define HDMI_CEC_RX_DATA1                       0x7D21
>> -#define HDMI_CEC_RX_DATA2                       0x7D22
>> -#define HDMI_CEC_RX_DATA3                       0x7D23
>> -#define HDMI_CEC_RX_DATA4                       0x7D24
>> -#define HDMI_CEC_RX_DATA5                       0x7D25
>> -#define HDMI_CEC_RX_DATA6                       0x7D26
>> -#define HDMI_CEC_RX_DATA7                       0x7D27
>> -#define HDMI_CEC_RX_DATA8                       0x7D28
>> -#define HDMI_CEC_RX_DATA9                       0x7D29
>> -#define HDMI_CEC_RX_DATA10                      0x7D2a
>> -#define HDMI_CEC_RX_DATA11                      0x7D2b
>> -#define HDMI_CEC_RX_DATA12                      0x7D2c
>> -#define HDMI_CEC_RX_DATA13                      0x7D2d
>> -#define HDMI_CEC_RX_DATA14                      0x7D2e
>> -#define HDMI_CEC_RX_DATA15                      0x7D2f
>> -#define HDMI_CEC_LOCK                           0x7D30
>> -#define HDMI_CEC_WKUPCTRL                       0x7D31
>> -
>>  /* I2C Master Registers (E-DDC) */
>>  #define HDMI_I2CM_SLAVE                         0x7E00
>>  #define HDMI_I2CM_ADDRESS                       0x7E01
>> -- 
>> 2.8.1
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 
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Pierre-Hugues Husson Nov. 15, 2016, 11:23 p.m. UTC | #3
Hi,


2016-11-14 16:22 GMT+01:00 Hans Verkuil <hverkuil@xs4all.nl>:
> From: Russell King <rmk+kernel@arm.linux.org.uk>
>
> We don't need the CEC engine register definitions, so let's remove them.
>
> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
> ---
>  drivers/gpu/drm/bridge/dw-hdmi.h | 45 ----------------------------------------
>  1 file changed, 45 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/dw-hdmi.h b/drivers/gpu/drm/bridge/dw-hdmi.h
> index fc9a560..26d6845 100644
> --- a/drivers/gpu/drm/bridge/dw-hdmi.h
> +++ b/drivers/gpu/drm/bridge/dw-hdmi.h
> @@ -478,51 +478,6 @@
>  #define HDMI_A_PRESETUP                         0x501A
>  #define HDMI_A_SRM_BASE                         0x5020
>
> -/* CEC Engine Registers */
> -#define HDMI_CEC_CTRL                           0x7D00
> -#define HDMI_CEC_STAT                           0x7D01
> -#define HDMI_CEC_MASK                           0x7D02
I don't know if this is relevant for a submission, but the build stops
working here because of a missing definition HDMI_CEC_MASK
Perhaps this should be inverted with 3/5 to make bissecting easier?
I was trying to bissect a kernel panic, and I had to fix this by hand
> -#define HDMI_CEC_POLARITY                       0x7D03
> -#define HDMI_CEC_INT                            0x7D04
> -#define HDMI_CEC_ADDR_L                         0x7D05
> -#define HDMI_CEC_ADDR_H                         0x7D06
> -#define HDMI_CEC_TX_CNT                         0x7D07
> -#define HDMI_CEC_RX_CNT                         0x7D08
> -#define HDMI_CEC_TX_DATA0                       0x7D10
> -#define HDMI_CEC_TX_DATA1                       0x7D11
> -#define HDMI_CEC_TX_DATA2                       0x7D12
> -#define HDMI_CEC_TX_DATA3                       0x7D13
> -#define HDMI_CEC_TX_DATA4                       0x7D14
> -#define HDMI_CEC_TX_DATA5                       0x7D15
> -#define HDMI_CEC_TX_DATA6                       0x7D16
> -#define HDMI_CEC_TX_DATA7                       0x7D17
> -#define HDMI_CEC_TX_DATA8                       0x7D18
> -#define HDMI_CEC_TX_DATA9                       0x7D19
> -#define HDMI_CEC_TX_DATA10                      0x7D1a
> -#define HDMI_CEC_TX_DATA11                      0x7D1b
> -#define HDMI_CEC_TX_DATA12                      0x7D1c
> -#define HDMI_CEC_TX_DATA13                      0x7D1d
> -#define HDMI_CEC_TX_DATA14                      0x7D1e
> -#define HDMI_CEC_TX_DATA15                      0x7D1f
> -#define HDMI_CEC_RX_DATA0                       0x7D20
> -#define HDMI_CEC_RX_DATA1                       0x7D21
> -#define HDMI_CEC_RX_DATA2                       0x7D22
> -#define HDMI_CEC_RX_DATA3                       0x7D23
> -#define HDMI_CEC_RX_DATA4                       0x7D24
> -#define HDMI_CEC_RX_DATA5                       0x7D25
> -#define HDMI_CEC_RX_DATA6                       0x7D26
> -#define HDMI_CEC_RX_DATA7                       0x7D27
> -#define HDMI_CEC_RX_DATA8                       0x7D28
> -#define HDMI_CEC_RX_DATA9                       0x7D29
> -#define HDMI_CEC_RX_DATA10                      0x7D2a
> -#define HDMI_CEC_RX_DATA11                      0x7D2b
> -#define HDMI_CEC_RX_DATA12                      0x7D2c
> -#define HDMI_CEC_RX_DATA13                      0x7D2d
> -#define HDMI_CEC_RX_DATA14                      0x7D2e
> -#define HDMI_CEC_RX_DATA15                      0x7D2f
> -#define HDMI_CEC_LOCK                           0x7D30
> -#define HDMI_CEC_WKUPCTRL                       0x7D31
> -
>  /* I2C Master Registers (E-DDC) */
>  #define HDMI_I2CM_SLAVE                         0x7E00
>  #define HDMI_I2CM_ADDRESS                       0x7E01
> --
> 2.8.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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Russell King (Oracle) Nov. 15, 2016, 11:27 p.m. UTC | #4
On Wed, Nov 16, 2016 at 12:23:50AM +0100, Pierre-Hugues Husson wrote:
> Hi,
> 
> 
> 2016-11-14 16:22 GMT+01:00 Hans Verkuil <hverkuil@xs4all.nl>:
> > From: Russell King <rmk+kernel@arm.linux.org.uk>
> >
> > We don't need the CEC engine register definitions, so let's remove them.
> >
> > Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
> > ---
> >  drivers/gpu/drm/bridge/dw-hdmi.h | 45 ----------------------------------------
> >  1 file changed, 45 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/dw-hdmi.h b/drivers/gpu/drm/bridge/dw-hdmi.h
> > index fc9a560..26d6845 100644
> > --- a/drivers/gpu/drm/bridge/dw-hdmi.h
> > +++ b/drivers/gpu/drm/bridge/dw-hdmi.h
> > @@ -478,51 +478,6 @@
> >  #define HDMI_A_PRESETUP                         0x501A
> >  #define HDMI_A_SRM_BASE                         0x5020
> >
> > -/* CEC Engine Registers */
> > -#define HDMI_CEC_CTRL                           0x7D00
> > -#define HDMI_CEC_STAT                           0x7D01
> > -#define HDMI_CEC_MASK                           0x7D02
> I don't know if this is relevant for a submission, but the build stops
> working here because of a missing definition HDMI_CEC_MASK
> Perhaps this should be inverted with 3/5 to make bissecting easier?
> I was trying to bissect a kernel panic, and I had to fix this by hand

Doesn't make sense - patch 3 doesn't reference HDMI_CEC_MASK.

Please show the build error in full.
Pierre-Hugues Husson Nov. 15, 2016, 11:35 p.m. UTC | #5
2016-11-16 0:27 GMT+01:00 Russell King - ARM Linux <linux@armlinux.org.uk>:
> On Wed, Nov 16, 2016 at 12:23:50AM +0100, Pierre-Hugues Husson wrote:
>> Hi,
>>
>>
>> 2016-11-14 16:22 GMT+01:00 Hans Verkuil <hverkuil@xs4all.nl>:
>> > From: Russell King <rmk+kernel@arm.linux.org.uk>
>> >
>> > We don't need the CEC engine register definitions, so let's remove them.
>> >
>> > Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
>> > ---
>> >  drivers/gpu/drm/bridge/dw-hdmi.h | 45 ----------------------------------------
>> >  1 file changed, 45 deletions(-)
>> >
>> > diff --git a/drivers/gpu/drm/bridge/dw-hdmi.h b/drivers/gpu/drm/bridge/dw-hdmi.h
>> > index fc9a560..26d6845 100644
>> > --- a/drivers/gpu/drm/bridge/dw-hdmi.h
>> > +++ b/drivers/gpu/drm/bridge/dw-hdmi.h
>> > @@ -478,51 +478,6 @@
>> >  #define HDMI_A_PRESETUP                         0x501A
>> >  #define HDMI_A_SRM_BASE                         0x5020
>> >
>> > -/* CEC Engine Registers */
>> > -#define HDMI_CEC_CTRL                           0x7D00
>> > -#define HDMI_CEC_STAT                           0x7D01
>> > -#define HDMI_CEC_MASK                           0x7D02
>> I don't know if this is relevant for a submission, but the build stops
>> working here because of a missing definition HDMI_CEC_MASK
>> Perhaps this should be inverted with 3/5 to make bissecting easier?
>> I was trying to bissect a kernel panic, and I had to fix this by hand
>
> Doesn't make sense - patch 3 doesn't reference HDMI_CEC_MASK.
>
> Please show the build error in full.
The build is actually fixed with patch 4.

Building after patch 2 fails with:
drivers/gpu/drm/bridge/dw-hdmi.c: In function ‘initialize_hdmi_ih_mutes’:
drivers/gpu/drm/bridge/dw-hdmi.c:1300:26: error: ‘HDMI_CEC_MASK’
undeclared (first use in this function)
  hdmi_writeb(hdmi, 0xff, HDMI_CEC_MASK);

The point of switching patch 3 and patch 2, is that the build works
with patch 1,3 applied.
Applying patch 2 breaks the build, but doesn't change any active code,
so it's ok.

So with the order 1,3,2,4,5, the build is broken only after 2, while
with 1,2,3,4,5, it is broken after 2 and 3.

I hope this makes my remark more explicit.

If it doesn't, I think it is quite safe to just ignore it
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diff mbox

Patch

diff --git a/drivers/gpu/drm/bridge/dw-hdmi.h b/drivers/gpu/drm/bridge/dw-hdmi.h
index fc9a560..26d6845 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.h
+++ b/drivers/gpu/drm/bridge/dw-hdmi.h
@@ -478,51 +478,6 @@ 
 #define HDMI_A_PRESETUP                         0x501A
 #define HDMI_A_SRM_BASE                         0x5020
 
-/* CEC Engine Registers */
-#define HDMI_CEC_CTRL                           0x7D00
-#define HDMI_CEC_STAT                           0x7D01
-#define HDMI_CEC_MASK                           0x7D02
-#define HDMI_CEC_POLARITY                       0x7D03
-#define HDMI_CEC_INT                            0x7D04
-#define HDMI_CEC_ADDR_L                         0x7D05
-#define HDMI_CEC_ADDR_H                         0x7D06
-#define HDMI_CEC_TX_CNT                         0x7D07
-#define HDMI_CEC_RX_CNT                         0x7D08
-#define HDMI_CEC_TX_DATA0                       0x7D10
-#define HDMI_CEC_TX_DATA1                       0x7D11
-#define HDMI_CEC_TX_DATA2                       0x7D12
-#define HDMI_CEC_TX_DATA3                       0x7D13
-#define HDMI_CEC_TX_DATA4                       0x7D14
-#define HDMI_CEC_TX_DATA5                       0x7D15
-#define HDMI_CEC_TX_DATA6                       0x7D16
-#define HDMI_CEC_TX_DATA7                       0x7D17
-#define HDMI_CEC_TX_DATA8                       0x7D18
-#define HDMI_CEC_TX_DATA9                       0x7D19
-#define HDMI_CEC_TX_DATA10                      0x7D1a
-#define HDMI_CEC_TX_DATA11                      0x7D1b
-#define HDMI_CEC_TX_DATA12                      0x7D1c
-#define HDMI_CEC_TX_DATA13                      0x7D1d
-#define HDMI_CEC_TX_DATA14                      0x7D1e
-#define HDMI_CEC_TX_DATA15                      0x7D1f
-#define HDMI_CEC_RX_DATA0                       0x7D20
-#define HDMI_CEC_RX_DATA1                       0x7D21
-#define HDMI_CEC_RX_DATA2                       0x7D22
-#define HDMI_CEC_RX_DATA3                       0x7D23
-#define HDMI_CEC_RX_DATA4                       0x7D24
-#define HDMI_CEC_RX_DATA5                       0x7D25
-#define HDMI_CEC_RX_DATA6                       0x7D26
-#define HDMI_CEC_RX_DATA7                       0x7D27
-#define HDMI_CEC_RX_DATA8                       0x7D28
-#define HDMI_CEC_RX_DATA9                       0x7D29
-#define HDMI_CEC_RX_DATA10                      0x7D2a
-#define HDMI_CEC_RX_DATA11                      0x7D2b
-#define HDMI_CEC_RX_DATA12                      0x7D2c
-#define HDMI_CEC_RX_DATA13                      0x7D2d
-#define HDMI_CEC_RX_DATA14                      0x7D2e
-#define HDMI_CEC_RX_DATA15                      0x7D2f
-#define HDMI_CEC_LOCK                           0x7D30
-#define HDMI_CEC_WKUPCTRL                       0x7D31
-
 /* I2C Master Registers (E-DDC) */
 #define HDMI_I2CM_SLAVE                         0x7E00
 #define HDMI_I2CM_ADDRESS                       0x7E01