Re: [PATCH v2 2/3] drm/msm/a6xx: Use rev to identify SKU

From: Akhil P Oommen <akhilpo@codeaurora.org>
To: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>,
	Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
	Jonathan Marek <jonathan@marek.ca>,
	David Airlie <airlied@linux.ie>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	Sharat Masetty <smasetty@codeaurora.org>,
	Douglas Anderson <dianders@chromium.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	Jordan Crouse <jordan@cosmicpenguin.net>,
	Matthias Kaehlcke <mka@chromium.org>,
	freedreno <freedreno@lists.freedesktop.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 2/3] drm/msm/a6xx: Use rev to identify SKU
Date: Thu, 29 Jul 2021 21:05:56 +0530	[thread overview]
Message-ID: <cf9effea-43dc-0ea6-6e73-29e6beff607f@codeaurora.org> (raw)
In-Reply-To: <CAF6AEGtv0R=SjwpV7NEX6-4sHTF_CxbqgFXNWN+PT9hJJb7N2A@mail.gmail.com>

On 7/29/2021 8:57 PM, Rob Clark wrote:
> On Thu, Jul 29, 2021 at 7:33 AM Akhil P Oommen <akhilpo@codeaurora.org> wrote:
>>
>> Use rev instead of revn to identify the SKU. This is in
>> preparation to the introduction of 7c3 gpu which won't have a
>> revn.
>>
>> Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
>> ---
>>
>> (no changes since v1)
>>
>>   drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 11 +++++------
>>   1 file changed, 5 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
>> index 183b9f9..0da1a66 100644
>> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
>> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
>> @@ -1675,11 +1675,11 @@ static u32 a618_get_speed_bin(u32 fuse)
>>          return UINT_MAX;
>>   }
>>
>> -static u32 fuse_to_supp_hw(struct device *dev, u32 revn, u32 fuse)
>> +static u32 fuse_to_supp_hw(struct device *dev, struct adreno_rev rev, u32 fuse)
>>   {
>>          u32 val = UINT_MAX;
>>
>> -       if (revn == 618)
>> +       if (adreno_cmp_rev(ADRENO_REV(6, 1, 8, ANY_ID), rev))
> 
> Looks like adreno_cmp_rev() ended up in patch 3/3 when it should have
> been in this patch..
> 
> But I guess we could also move this into adreno_is_a618() and use that here
> 
> BR,
> -R
Ahh! I reordered the patches. This is too early in the probe sequence to 
call adreno_is_axxx(), right?

-Akhil.
> 
>>                  val = a618_get_speed_bin(fuse);
>>
>>          if (val == UINT_MAX) {
>> @@ -1692,8 +1692,7 @@ static u32 fuse_to_supp_hw(struct device *dev, u32 revn, u32 fuse)
>>          return (1 << val);
>>   }
>>
>> -static int a6xx_set_supported_hw(struct device *dev, struct a6xx_gpu *a6xx_gpu,
>> -               u32 revn)
>> +static int a6xx_set_supported_hw(struct device *dev, struct adreno_rev rev)
>>   {
>>          u32 supp_hw = UINT_MAX;
>>          u16 speedbin;
>> @@ -1714,7 +1713,7 @@ static int a6xx_set_supported_hw(struct device *dev, struct a6xx_gpu *a6xx_gpu,
>>          }
>>          speedbin = le16_to_cpu(speedbin);
>>
>> -       supp_hw = fuse_to_supp_hw(dev, revn, speedbin);
>> +       supp_hw = fuse_to_supp_hw(dev, rev, speedbin);
>>
>>   done:
>>          ret = devm_pm_opp_set_supported_hw(dev, &supp_hw, 1);
>> @@ -1785,7 +1784,7 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
>>
>>          a6xx_llc_slices_init(pdev, a6xx_gpu);
>>
>> -       ret = a6xx_set_supported_hw(&pdev->dev, a6xx_gpu, info->revn);
>> +       ret = a6xx_set_supported_hw(&pdev->dev, config->rev);
>>          if (ret) {
>>                  a6xx_destroy(&(a6xx_gpu->base.base));
>>                  return ERR_PTR(ret);
>> --
>> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
>> of Code Aurora Forum, hosted by The Linux Foundation.
>>