Re: [PATCH] drm/i915: simplify check for I915G/I945G in bit 6 swizzling detection

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On Tue, Dec 13, 2016 at 01:10:59PM +0200, Jani Nikula wrote:
> c9c4b6f6c283 ("drm/i915: fix swizzle detection for gen3") added a
> complicated check for I915G/I945G. Pineview and other gen3 devices match
> IS_MOBILE() anyway. Simplify.
> 
> Cc: Daniel Vetter <daniel@xxxxxxxx>
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/i915_gem_fence_reg.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem_fence_reg.c b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
> index 09193cfb5d8b..e03983973252 100644
> --- a/drivers/gpu/drm/i915/i915_gem_fence_reg.c
> +++ b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
> @@ -513,8 +513,7 @@ i915_gem_detect_bit_6_swizzle(struct drm_i915_private *dev_priv)
>  		swizzle_x = I915_BIT_6_SWIZZLE_NONE;
>  		swizzle_y = I915_BIT_6_SWIZZLE_NONE;
>  	} else if (IS_MOBILE(dev_priv) ||
> -		   (IS_GEN3(dev_priv) &&
> -		    !IS_G33(dev_priv) && !IS_PINEVIEW(dev_priv))) {
> +		   IS_I915G(dev_priv) || IS_I945G(dev_priv)) {

Seems to miss i915gm and i945gm. Hm, but then you mention those are
mobile. Then I guess it's a bikeshed, but at least a correct one.

Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
-Daniel

>  		uint32_t dcc;
>  
>  		/* On 9xx chipsets, channel interleave by the CPU is
> -- 
> 2.1.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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