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[v9,4/5] drm: Add definition for eDP backlight frequency

Message ID 20170523223805.46372-5-puthik@chromium.org (mailing list archive)
State New, archived
Headers show

Commit Message

Puthikorn Voravootivat May 23, 2017, 10:38 p.m. UTC
This patch adds the following definition
- Bit mask for EDP_PWMGEN_BIT_COUNT and min/max cap
  register which only use bit 0:4
- Base frequency (27 MHz) for backlight PWM frequency
  generator.

Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
---
 include/drm/drm_dp_helper.h | 2 ++
 1 file changed, 2 insertions(+)

Comments

Jani Nikula May 24, 2017, 8:40 a.m. UTC | #1
On Tue, 23 May 2017, Puthikorn Voravootivat <puthik@chromium.org> wrote:
> This patch adds the following definition
> - Bit mask for EDP_PWMGEN_BIT_COUNT and min/max cap
>   register which only use bit 0:4
> - Base frequency (27 MHz) for backlight PWM frequency
>   generator.
>
> Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> ---
>  include/drm/drm_dp_helper.h | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index c0bd0d7651a9..eaa307f6ae8c 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -572,10 +572,12 @@
>  #define DP_EDP_PWMGEN_BIT_COUNT             0x724
>  #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN     0x725
>  #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX     0x726
> +# define  DP_EDP_PWMGEN_BIT_COUNT_MASK      (0x1f << 0)
           ^^

Extra space crept in.

BR,
Jani.

>  
>  #define DP_EDP_BACKLIGHT_CONTROL_STATUS     0x727
>  
>  #define DP_EDP_BACKLIGHT_FREQ_SET           0x728
> +# define DP_EDP_BACKLIGHT_FREQ_BASE_KHZ     27000
>  
>  #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB   0x72a
>  #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID   0x72b
Jani Nikula May 26, 2017, 12:30 p.m. UTC | #2
On Wed, 24 May 2017, Jani Nikula <jani.nikula@linux.intel.com> wrote:
> On Tue, 23 May 2017, Puthikorn Voravootivat <puthik@chromium.org> wrote:
>> This patch adds the following definition
>> - Bit mask for EDP_PWMGEN_BIT_COUNT and min/max cap
>>   register which only use bit 0:4
>> - Base frequency (27 MHz) for backlight PWM frequency
>>   generator.
>>
>> Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
>> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
>> ---
>>  include/drm/drm_dp_helper.h | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
>> index c0bd0d7651a9..eaa307f6ae8c 100644
>> --- a/include/drm/drm_dp_helper.h
>> +++ b/include/drm/drm_dp_helper.h
>> @@ -572,10 +572,12 @@
>>  #define DP_EDP_PWMGEN_BIT_COUNT             0x724
>>  #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN     0x725
>>  #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX     0x726
>> +# define  DP_EDP_PWMGEN_BIT_COUNT_MASK      (0x1f << 0)
>            ^^
>
> Extra space crept in.

Fixed that while applying to drm-intel-next-queued, thanks for the
patch. Pushed via drm-intel with Dave's IRC ack to not require a
backmerge for the subsequent patches.

BR,
Jani.


>
> BR,
> Jani.
>
>>  
>>  #define DP_EDP_BACKLIGHT_CONTROL_STATUS     0x727
>>  
>>  #define DP_EDP_BACKLIGHT_FREQ_SET           0x728
>> +# define DP_EDP_BACKLIGHT_FREQ_BASE_KHZ     27000
>>  
>>  #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB   0x72a
>>  #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID   0x72b
diff mbox

Patch

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index c0bd0d7651a9..eaa307f6ae8c 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -572,10 +572,12 @@ 
 #define DP_EDP_PWMGEN_BIT_COUNT             0x724
 #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN     0x725
 #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX     0x726
+# define  DP_EDP_PWMGEN_BIT_COUNT_MASK      (0x1f << 0)
 
 #define DP_EDP_BACKLIGHT_CONTROL_STATUS     0x727
 
 #define DP_EDP_BACKLIGHT_FREQ_SET           0x728
+# define DP_EDP_BACKLIGHT_FREQ_BASE_KHZ     27000
 
 #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB   0x72a
 #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID   0x72b