[Intel-gfx] [PATCH] drm/i915: Restore DMC required version for Skylake (1.26)

[Dave Gordon]

On 10/08/16 06:57, Rodrigo Vivi wrote:
> With commit 4aa7fb9c ("drm/i915/dmc: Step away from symbolic
> links") we started loading the firmware version directly
> instead of symbolic links.

However the pathnames in the patch context below are still the symlink 
names -- is this correct? Or did some merge effectively revert Patrik's 
changes by accident?

> With this VERSION_REQUIRED variables changed the meaning
> from minimal required to exact version required. Along
> with this change we started using the latest stable
> DMC firmware as the required one 1.26.
>
> This patch is correct. However in some merge this
> change got missed and it was overwritten by the old
> version.
>
> 1.23 is unstable and can cause blank screens so let's
> avoid it.
>
> Cc: stable at vger.kernel.org
> Cc: Jani Nikula <jani.nikula at intel.com>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: Patrik Jakobsson <patrik.jakobsson at linux.intel.com>
> Cc: Matthew Atwood <matthew.s.atwood at intel.com>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97182
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_csr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
> index fb27d18..0efce3f 100644
> --- a/drivers/gpu/drm/i915/intel_csr.c
> +++ b/drivers/gpu/drm/i915/intel_csr.c
> @@ -40,7 +40,7 @@ MODULE_FIRMWARE(I915_CSR_KBL);
>
>  #define I915_CSR_SKL "i915/skl_dmc_ver1.bin"

Major version only here?

>  MODULE_FIRMWARE(I915_CSR_SKL);
> -#define SKL_CSR_VERSION_REQUIRED	CSR_VERSION(1, 23)
> +#define SKL_CSR_VERSION_REQUIRED	CSR_VERSION(1, 26)
>
>  #define I915_CSR_BXT "i915/bxt_dmc_ver1.bin"

And here too.

>  MODULE_FIRMWARE(I915_CSR_BXT);

.Dave.