From patchwork Fri Nov 27 12:49:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akhil P Oommen X-Patchwork-Id: 11936271 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC559C63798 for ; Fri, 27 Nov 2020 12:50:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E06422248 for ; Fri, 27 Nov 2020 12:50:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="W2M7jwXd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729592AbgK0Mul (ORCPT ); Fri, 27 Nov 2020 07:50:41 -0500 Received: from m42-4.mailgun.net ([69.72.42.4]:52366 "EHLO m42-4.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728910AbgK0Mul (ORCPT ); Fri, 27 Nov 2020 07:50:41 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1606481440; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=TaRZz9Bdo7Lgel06rJK7JrsCK6fVn7n/WrN3GD5UE3s=; b=W2M7jwXdZN4WDzL92hm03ojGIfyzYj4dM8lCkVWthbSH22IRGj99VO04Rn57Wu6Sk5VR6RPw 0Cpdd6k0D4nJEAiN3fRO4Uc6RXfnJoK2zYHbb+RafJ8RDKyELYoY70DX3ooNW1b9OMOrdAM6 kQskRIffRg6du0GUfb0VoFKFoK4= X-Mailgun-Sending-Ip: 69.72.42.4 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-east-1.postgun.com with SMTP id 5fc0f61b9e87e163521b7066 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 27 Nov 2020 12:50:35 GMT Sender: akhilpo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 5E38FC43462; Fri, 27 Nov 2020 12:50:34 +0000 (UTC) Received: from akhilpo-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akhilpo) by smtp.codeaurora.org (Postfix) with ESMTPSA id ED286C433ED; Fri, 27 Nov 2020 12:50:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org ED286C433ED Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=akhilpo@codeaurora.org From: Akhil P Oommen To: freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: robh@kernel.org, dri-devel@freedesktop.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, jcrouse@codeaurora.org, mka@chromium.org, robdclark@gmail.com, dianders@chromium.org Subject: [PATCH v2 1/3] drm/msm: adreno: Make speed-bin support generic Date: Fri, 27 Nov 2020 18:19:44 +0530 Message-Id: <1606481386-22867-1-git-send-email-akhilpo@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org So far a530v2 gpu has support for detecting its supported opps based on a fuse value called speed-bin. This patch makes this support generic across gpu families. This is in preparation to extend speed-bin support to a6x family. Signed-off-by: Akhil P Oommen --- Changes from v1: 1. Added the changes to support a618 sku to the series. 2. Avoid failing probe in case of an unsupported sku. (Rob) drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 34 -------------- drivers/gpu/drm/msm/adreno/adreno_device.c | 4 ++ drivers/gpu/drm/msm/adreno/adreno_gpu.c | 71 ++++++++++++++++++++++++++++++ drivers/gpu/drm/msm/adreno/adreno_gpu.h | 5 +++ 4 files changed, 80 insertions(+), 34 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index 8fa5c91..7d42321 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -1531,38 +1531,6 @@ static const struct adreno_gpu_funcs funcs = { .get_timestamp = a5xx_get_timestamp, }; -static void check_speed_bin(struct device *dev) -{ - struct nvmem_cell *cell; - u32 val; - - /* - * If the OPP table specifies a opp-supported-hw property then we have - * to set something with dev_pm_opp_set_supported_hw() or the table - * doesn't get populated so pick an arbitrary value that should - * ensure the default frequencies are selected but not conflict with any - * actual bins - */ - val = 0x80; - - cell = nvmem_cell_get(dev, "speed_bin"); - - if (!IS_ERR(cell)) { - void *buf = nvmem_cell_read(cell, NULL); - - if (!IS_ERR(buf)) { - u8 bin = *((u8 *) buf); - - val = (1 << bin); - kfree(buf); - } - - nvmem_cell_put(cell); - } - - dev_pm_opp_set_supported_hw(dev, &val, 1); -} - struct msm_gpu *a5xx_gpu_init(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; @@ -1588,8 +1556,6 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev) a5xx_gpu->lm_leakage = 0x4E001A; - check_speed_bin(&pdev->dev); - ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 4); if (ret) { a5xx_destroy(&(a5xx_gpu->base.base)); diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 87c8b03..e0ff16c 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -18,6 +18,8 @@ bool snapshot_debugbus = false; MODULE_PARM_DESC(snapshot_debugbus, "Include debugbus sections in GPU devcoredump (if not fused off)"); module_param_named(snapshot_debugbus, snapshot_debugbus, bool, 0600); +const u32 a530v2_speedbins[] = {0, 1, 2, 3, 4, 5, 6, 7}; + static const struct adreno_info gpulist[] = { { .rev = ADRENO_REV(2, 0, 0, 0), @@ -163,6 +165,8 @@ static const struct adreno_info gpulist[] = { ADRENO_QUIRK_FAULT_DETECT_MASK, .init = a5xx_gpu_init, .zapfw = "a530_zap.mdt", + .speedbins = a530v2_speedbins, + .speedbins_count = ARRAY_SIZE(a530v2_speedbins), }, { .rev = ADRENO_REV(5, 4, 0, 2), .revn = 540, diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index f21561d..b342fa4 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include "adreno_gpu.h" #include "msm_gem.h" @@ -891,6 +892,69 @@ void adreno_gpu_ocmem_cleanup(struct adreno_ocmem *adreno_ocmem) adreno_ocmem->hdl); } +static int adreno_set_supported_hw(struct device *dev, + struct adreno_gpu *adreno_gpu) +{ + u8 speedbins_count = adreno_gpu->info->speedbins_count; + const u32 *speedbins = adreno_gpu->info->speedbins; + struct nvmem_cell *cell; + u32 bin, i; + u32 val = 0; + void *buf, *opp_table; + + cell = nvmem_cell_get(dev, "speed_bin"); + /* + * -ENOENT means that the platform doesn't support speedbin which is + * fine + */ + if (PTR_ERR(cell) == -ENOENT) + return 0; + else if (IS_ERR(cell)) + return PTR_ERR(cell); + + if (!speedbins) + goto done; + + buf = nvmem_cell_read(cell, NULL); + if (IS_ERR(buf)) { + nvmem_cell_put(cell); + return PTR_ERR(buf); + } + + bin = *((u32 *) buf); + + for (i = 0; i < speedbins_count; i++) { + if (bin == speedbins[i]) { + val = (1 << i); + break; + } + } + + kfree(buf); +done: + nvmem_cell_put(cell); + + if (!val) { + DRM_DEV_ERROR(dev, + "missing support for speed-bin: %u. Some OPPs may not be supported by hardware", + bin); + val = ~0U; + } + + opp_table = dev_pm_opp_set_supported_hw(dev, &val, 1); + if (IS_ERR(opp_table)) + return PTR_ERR(opp_table); + + adreno_gpu->opp_table = opp_table; + return 0; +} + +static void adreno_put_supported_hw(struct opp_table *opp_table) +{ + if (opp_table) + dev_pm_opp_put_supported_hw(opp_table); +} + int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, struct adreno_gpu *adreno_gpu, const struct adreno_gpu_funcs *funcs, int nr_rings) @@ -899,6 +963,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, struct adreno_platform_config *config = dev->platform_data; struct msm_gpu_config adreno_gpu_config = { 0 }; struct msm_gpu *gpu = &adreno_gpu->base; + int ret; adreno_gpu->funcs = funcs; adreno_gpu->info = adreno_info(config->rev); @@ -910,6 +975,10 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, adreno_gpu_config.nr_rings = nr_rings; + ret = adreno_set_supported_hw(dev, adreno_gpu); + if (ret) + return ret; + adreno_get_pwrlevels(dev, gpu); pm_runtime_set_autosuspend_delay(dev, @@ -936,4 +1005,6 @@ void adreno_gpu_cleanup(struct adreno_gpu *adreno_gpu) icc_put(gpu->icc_path); icc_put(gpu->ocmem_icc_path); + + adreno_put_supported_hw(adreno_gpu->opp_table); } diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h index c3775f7..a756ad7 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -55,6 +55,7 @@ struct adreno_reglist { }; extern const struct adreno_reglist a630_hwcg[], a640_hwcg[], a650_hwcg[]; +extern const u32 a618_speedbins[]; struct adreno_info { struct adreno_rev rev; @@ -67,6 +68,8 @@ struct adreno_info { const char *zapfw; u32 inactive_period; const struct adreno_reglist *hwcg; + const u32 *speedbins; + const u8 speedbins_count; }; const struct adreno_info *adreno_info(struct adreno_rev rev); @@ -112,6 +115,8 @@ struct adreno_gpu { * code (a3xx_gpu.c) and stored in this common location. */ const unsigned int *reg_offsets; + + struct opp_table *opp_table; }; #define to_adreno_gpu(x) container_of(x, struct adreno_gpu, base)