From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74945E80A93 for ; Wed, 27 Sep 2023 13:36:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231849AbjI0Ngq (ORCPT ); Wed, 27 Sep 2023 09:36:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43610 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231766AbjI0Ngq (ORCPT ); Wed, 27 Sep 2023 09:36:46 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA9B2FC; Wed, 27 Sep 2023 06:36:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695821804; x=1727357804; h=date:from:to:cc:subject:in-reply-to:message-id: references:mime-version; bh=fdvcNS8sPUuvoomLIhYt1Lp4qOK7EMXglT6h/GgFXOg=; b=RzeMKcEwXr4ONCR715rKA4ZCEHBibPLK6cyoMCE8oP9Bve/f8GhHJdAa 0HAcFbnMR0/kGyA6bP45p1w3jfZkLr1pgTqG2C9gluCkyNMpqdRQfOvlJ Nd02g8SnCaetxy6Q7XnYp4CFhnImaDi2wfGNUKpHgKeCZJmyVXNeWnZ0o 3vhuWLKtirrhZrHBG29P6PgtE3GBTNkFB5d7pd4WecckKeQCpS6x1GdQW ApFrEvII4W43vUR+oNLgP7t7GDi5MX3qEu8B6MV/HiIuqq43TzYjYSflp iTtS8RPTx4peQ0ukAxHkiDYAUa5ymhcweFiENDNug/+JJjB9s8pUrF0TF A==; X-IronPort-AV: E=McAfee;i="6600,9927,10846"; a="384614744" X-IronPort-AV: E=Sophos;i="6.03,181,1694761200"; d="scan'208";a="384614744" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2023 06:36:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10846"; a="996157205" X-IronPort-AV: E=Sophos;i="6.03,181,1694761200"; d="scan'208";a="996157205" Received: from clkuhl-mobl.amr.corp.intel.com (HELO idecesar-mobl.ger.corp.intel.com) ([10.252.53.225]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2023 06:36:39 -0700 Date: Wed, 27 Sep 2023 16:36:37 +0300 (EEST) From: =?ISO-8859-15?Q?Ilpo_J=E4rvinen?= To: Shyam Sundar S K cc: hdegoede@redhat.com, markgross@kernel.org, basavaraj.natikar@amd.com, jikos@kernel.org, benjamin.tissoires@redhat.com, alexander.deucher@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, Patil.Reddy@amd.com, mario.limonciello@amd.com, platform-driver-x86@vger.kernel.org, linux-input@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: Re: [PATCH 13/15] platform/x86/amd/pmf: Add PMF-AMDGPU set interface In-Reply-To: <20230922175056.244940-14-Shyam-sundar.S-k@amd.com> Message-ID: <2a5b242b-b074-7fdb-fcdb-683d52b9da3@linux.intel.com> References: <20230922175056.244940-1-Shyam-sundar.S-k@amd.com> <20230922175056.244940-14-Shyam-sundar.S-k@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org On Fri, 22 Sep 2023, Shyam Sundar S K wrote: > For the Smart PC Solution to fully work, it has to enact to the actions > coming from TA. Add the initial code path for set interface to AMDGPU. > > Co-developed-by: Mario Limonciello > Signed-off-by: Mario Limonciello > Signed-off-by: Shyam Sundar S K > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c | 21 +++++++++++++++++++++ > drivers/platform/x86/amd/pmf/pmf.h | 2 ++ > drivers/platform/x86/amd/pmf/tee-if.c | 19 +++++++++++++++++-- > include/linux/amd-pmf-io.h | 1 + > 4 files changed, 41 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c > index 232d11833ddc..5c567bff0548 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmf.c > @@ -68,3 +68,24 @@ int amd_pmf_get_gfx_data(struct amd_gpu_pmf_data *pmf) > return 0; > } > EXPORT_SYMBOL_GPL(amd_pmf_get_gfx_data); > + > +int amd_pmf_set_gfx_data(struct amd_gpu_pmf_data *pmf) > +{ > + struct drm_device *drm_dev = pci_get_drvdata(pmf->gpu_dev); > + struct amdgpu_device *adev = drm_to_adev(drm_dev); > + struct backlight_device *bd; > + > + if (!(adev->flags & AMD_IS_APU)) { > + DRM_ERROR("PMF-AMDGPU interface not supported\n"); > + return -ENODEV; > + } > + > + bd = backlight_device_get_by_type(BACKLIGHT_RAW); > + if (!bd) > + return -ENODEV; > + > + backlight_device_set_brightness(bd, pmf->brightness); > + > + return 0; > +} > +EXPORT_SYMBOL_GPL(amd_pmf_set_gfx_data); > diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h > index 9032df4ba48a..ce89cc0daa5a 100644 > --- a/drivers/platform/x86/amd/pmf/pmf.h > +++ b/drivers/platform/x86/amd/pmf/pmf.h > @@ -73,6 +73,7 @@ > #define PMF_POLICY_STT_SKINTEMP_APU 7 > #define PMF_POLICY_STT_SKINTEMP_HS2 8 > #define PMF_POLICY_SYSTEM_STATE 9 > +#define PMF_POLICY_DISPLAY_BRIGHTNESS 12 > #define PMF_POLICY_P3T 38 > > /* TA macros */ > @@ -480,6 +481,7 @@ enum ta_pmf_error_type { > }; > > struct pmf_action_table { > + unsigned long display_brightness; > enum system_state system_state; > unsigned long spl; /* in mW */ > unsigned long sppt; /* in mW */ > diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c > index 1608996654e8..eefffff83a4c 100644 > --- a/drivers/platform/x86/amd/pmf/tee-if.c > +++ b/drivers/platform/x86/amd/pmf/tee-if.c > @@ -79,10 +79,10 @@ static int amd_pmf_update_uevents(struct amd_pmf_dev *dev, u16 event) > return 0; > } > > -static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_result *out) > +static int amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_result *out) Changing return type but no caller is changed to handle the error?? > { > u32 val, event = 0; > - int idx; > + int idx, ret; > > for (idx = 0; idx < out->actions_count; idx++) { > val = out->actions_list[idx].value; > @@ -160,8 +160,23 @@ static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_ > dev->prev_data->system_state = 0; > } > break; > + > + case PMF_POLICY_DISPLAY_BRIGHTNESS: > + ret = amd_pmf_get_gfx_data(&dev->gfx_data); > + if (ret) > + return ret; > + > + dev->prev_data->display_brightness = dev->gfx_data.brightness; > + if (dev->prev_data->display_brightness != val) { > + dev->gfx_data.brightness = val; > + amd_pmf_set_gfx_data(&dev->gfx_data); > + dev_dbg(dev->dev, "update DISPLAY_BRIGHTNESS : %d\n", val); > + } > + break; > } > } > + > + return 0; > } > > static int amd_pmf_invoke_cmd_enact(struct amd_pmf_dev *dev) > diff --git a/include/linux/amd-pmf-io.h b/include/linux/amd-pmf-io.h > index a2d4af231362..ecae387ddaa6 100644 > --- a/include/linux/amd-pmf-io.h > +++ b/include/linux/amd-pmf-io.h > @@ -25,4 +25,5 @@ struct amd_gpu_pmf_data { > }; > > int amd_pmf_get_gfx_data(struct amd_gpu_pmf_data *pmf); > +int amd_pmf_set_gfx_data(struct amd_gpu_pmf_data *pmf); > #endif > -- i.