[PATCH v4 03/13] drm/rockchip: return a true clock rate to adjusted_mode

[Mark yao]

On 2015年11月20日 16:15, Chris Zhong wrote:
> Since the mipi dsi driver need to use the clock of vop to make the
> calculation of Blanking. But sometimes the clock driver can not set a
> accurate clock_rate for vop, get it by clk_round_rate before mode_set,
> so we can get the true value.
>
> Signed-off-by: Chris Zhong 
>
> ---
>
> Changes in v4:
> use clk_round_rate to check the clock rate in vop_crtc_mode_fixup
>
> Changes in v3: None
> Changes in v2: None
>
>   drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 5 +
>   1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
> b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index 5d8ae5e..eff545b 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -1136,9 +1136,14 @@ static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
>   const struct drm_display_mode *mode,
>   struct drm_display_mode *adjusted_mode)
>   {
> + struct vop *vop = to_vop(crtc);
> +
>   if (adjusted_mode->htotal == 0 || adjusted_mode->vtotal == 0)
>   return false;
>   
> + adjusted_mode->clock =
> + clk_round_rate(vop->dclk, mode->clock * 1000) / 1000;
> +
>   return true;
>   }
>   
Looks good for me, so
 Acked-by: Mark Yao 


-- 
ï¼­ark Yao

[PATCH v4 03/13] drm/rockchip: return a true clock rate to adjusted_mode

[Chris Zhong]

Since the mipi dsi driver need to use the clock of vop to make the
calculation of Blanking. But sometimes the clock driver can not set a
accurate clock_rate for vop, get it by clk_round_rate before mode_set,
so we can get the true value.

Signed-off-by: Chris Zhong 

---

Changes in v4:
use clk_round_rate to check the clock rate in vop_crtc_mode_fixup

Changes in v3: None
Changes in v2: None

 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 5 +
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 5d8ae5e..eff545b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1136,9 +1136,14 @@ static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
 {
+   struct vop *vop = to_vop(crtc);
+
if (adjusted_mode->htotal == 0 || adjusted_mode->vtotal == 0)
return false;

+   adjusted_mode->clock =
+   clk_round_rate(vop->dclk, mode->clock * 1000) / 1000;
+
return true;
 }

-- 
2.6.3