diff mbox series

[8/9] drm: meson: add macro used to enable HDMI PLL

Message ID 86o92n82e1.fsf@baylibre.com (mailing list archive)
State New, archived
Headers show
Series drm: meson: global clean-up (use proper macros, update comments ...) | expand

Commit Message

Julien Masson June 24, 2019, 2:49 p.m. UTC
This patch add new macro HHI_HDMI_PLL_CNTL_EN which is used to enable
HDMI PLL.

Signed-off-by: Julien Masson <jmasson@baylibre.com>
---
 drivers/gpu/drm/meson/meson_vclk.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Kevin Hilman June 24, 2019, 11:20 p.m. UTC | #1
Julien Masson <jmasson@baylibre.com> writes:

> This patch add new macro HHI_HDMI_PLL_CNTL_EN which is used to enable
> HDMI PLL.
>
> Signed-off-by: Julien Masson <jmasson@baylibre.com>
> ---
>  drivers/gpu/drm/meson/meson_vclk.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
> index e7c2b439d0f7..be6e152fc75a 100644
> --- a/drivers/gpu/drm/meson/meson_vclk.c
> +++ b/drivers/gpu/drm/meson/meson_vclk.c
> @@ -96,6 +96,7 @@
>  #define HHI_VDAC_CNTL1		0x2F8 /* 0xbe offset in data sheet */
>  
>  #define HHI_HDMI_PLL_CNTL	0x320 /* 0xc8 offset in data sheet */
> +#define HHI_HDMI_PLL_CNTL_EN	BIT(30)
>  #define HHI_HDMI_PLL_CNTL2	0x324 /* 0xc9 offset in data sheet */
>  #define HHI_HDMI_PLL_CNTL3	0x328 /* 0xca offset in data sheet */
>  #define HHI_HDMI_PLL_CNTL4	0x32C /* 0xcb offset in data sheet */
> @@ -468,7 +469,7 @@ void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
>  
>  		/* Enable and unreset */
>  		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
> -				   0x7 << 28, 0x4 << 28);
> +				   0x7 << 28, HHI_HDMI_PLL_CNTL_EN);

still using a magic const for the mask.  Can use GENMASK() for this?

Kevin
Neil Armstrong Aug. 8, 2019, 2:10 p.m. UTC | #2
On 25/06/2019 01:20, Kevin Hilman wrote:
> Julien Masson <jmasson@baylibre.com> writes:
> 
>> This patch add new macro HHI_HDMI_PLL_CNTL_EN which is used to enable
>> HDMI PLL.
>>
>> Signed-off-by: Julien Masson <jmasson@baylibre.com>
>> ---
>>  drivers/gpu/drm/meson/meson_vclk.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
>> index e7c2b439d0f7..be6e152fc75a 100644
>> --- a/drivers/gpu/drm/meson/meson_vclk.c
>> +++ b/drivers/gpu/drm/meson/meson_vclk.c
>> @@ -96,6 +96,7 @@
>>  #define HHI_VDAC_CNTL1		0x2F8 /* 0xbe offset in data sheet */
>>  
>>  #define HHI_HDMI_PLL_CNTL	0x320 /* 0xc8 offset in data sheet */
>> +#define HHI_HDMI_PLL_CNTL_EN	BIT(30)
>>  #define HHI_HDMI_PLL_CNTL2	0x324 /* 0xc9 offset in data sheet */
>>  #define HHI_HDMI_PLL_CNTL3	0x328 /* 0xca offset in data sheet */
>>  #define HHI_HDMI_PLL_CNTL4	0x32C /* 0xcb offset in data sheet */
>> @@ -468,7 +469,7 @@ void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
>>  
>>  		/* Enable and unreset */
>>  		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
>> -				   0x7 << 28, 0x4 << 28);
>> +				   0x7 << 28, HHI_HDMI_PLL_CNTL_EN);

I'll do a pass on the PLL part since it needs much more work than a cleanup,
it's ok for me.

Neil

> 
> still using a magic const for the mask.  Can use GENMASK() for this?
> 
> Kevin
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
index e7c2b439d0f7..be6e152fc75a 100644
--- a/drivers/gpu/drm/meson/meson_vclk.c
+++ b/drivers/gpu/drm/meson/meson_vclk.c
@@ -96,6 +96,7 @@ 
 #define HHI_VDAC_CNTL1		0x2F8 /* 0xbe offset in data sheet */
 
 #define HHI_HDMI_PLL_CNTL	0x320 /* 0xc8 offset in data sheet */
+#define HHI_HDMI_PLL_CNTL_EN	BIT(30)
 #define HHI_HDMI_PLL_CNTL2	0x324 /* 0xc9 offset in data sheet */
 #define HHI_HDMI_PLL_CNTL3	0x328 /* 0xca offset in data sheet */
 #define HHI_HDMI_PLL_CNTL4	0x32C /* 0xcb offset in data sheet */
@@ -468,7 +469,7 @@  void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
 
 		/* Enable and unreset */
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
-				   0x7 << 28, 0x4 << 28);
+				   0x7 << 28, HHI_HDMI_PLL_CNTL_EN);
 
 		/* Poll for lock bit */
 		regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL,