From patchwork Sat Jul 25 19:00:26 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Animesh Manna X-Patchwork-Id: 6865371 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 7B92BC05AC for ; Sat, 25 Jul 2015 19:00:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9531E20615 for ; Sat, 25 Jul 2015 19:00:43 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 9A44520611 for ; Sat, 25 Jul 2015 19:00:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DEF246E46A; Sat, 25 Jul 2015 12:00:41 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 1BFEA6E46A for ; Sat, 25 Jul 2015 12:00:40 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 25 Jul 2015 12:00:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,543,1432623600"; d="scan'208";a="735456006" Received: from amanna-desktop.iind.intel.com ([10.223.25.39]) by orsmga001.jf.intel.com with ESMTP; 25 Jul 2015 12:00:37 -0700 From: Animesh Manna To: intel-gfx@lists.freedesktop.org Date: Sun, 26 Jul 2015 00:30:26 +0530 Message-Id: <1437850839-16782-6-git-send-email-animesh.manna@intel.com> X-Mailer: git-send-email 2.0.2 In-Reply-To: <1437850839-16782-1-git-send-email-animesh.manna@intel.com> References: <1437850839-16782-1-git-send-email-animesh.manna@intel.com> Cc: Daniel Vetter Subject: [Intel-gfx] [PATCH 05/18] drm/i915/gen9: csr_init after runtime pm enable X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As skl is fully dependent on dmc to go to low power state (dc5/dc6) which requires a trigger from rpm and to ensure the dmc firmware is available for runtime pm support rpm-reference-count is used by not releasing the rpm reference acquire when starting the firmware loader work. So moved the intel_csr_ucode_init call after runtime pm enable. Since have introduced a async work in next patches for loading firmware and flush_work() will be used while disabling pw2. So there's no need for any additional synchronization between the dmc loader and trigger for low power state. Note that for bxt without dmc, display engine can go to lowest possible state (dc9), so releasing the rpm reference. Cc: Daniel Vetter Cc: Damien Lespiau Cc: Imre Deak Cc: Sunil Kamath Signed-off-by: Animesh Manna --- drivers/gpu/drm/i915/i915_dma.c | 6 +++--- drivers/gpu/drm/i915/intel_csr.c | 11 ++++++----- drivers/gpu/drm/i915/intel_runtime_pm.c | 17 +++-------------- 3 files changed, 12 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index b1f9e55..cdd3fbd 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -877,9 +877,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) intel_uncore_init(dev); - /* Load CSR Firmware for SKL */ - intel_csr_ucode_init(dev); - ret = i915_gem_gtt_init(dev); if (ret) goto out_freecsr; @@ -1025,6 +1022,9 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) intel_runtime_pm_enable(dev_priv); + /* Load CSR Firmware for SKL */ + intel_csr_ucode_init(dev); + i915_audio_component_init(dev_priv); return 0; diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c index f440299..e759190 100644 --- a/drivers/gpu/drm/i915/intel_csr.c +++ b/drivers/gpu/drm/i915/intel_csr.c @@ -404,10 +404,13 @@ static void finish_csr_load(const struct firmware *fw, void *context) DRM_DEBUG_KMS("Finished loading %s\n", dev_priv->csr.fw_path); out: - if (fw_loaded) + if (fw_loaded || IS_BROXTON(dev)) intel_runtime_pm_put(dev_priv); - else - intel_csr_load_status_set(dev_priv, FW_FAILED); + + /* + * We require the dmc firmware for runtime pm on skl - leak the rpm + * reference in case this failed to disable rpm on. + */ release_firmware(fw); } @@ -477,8 +480,6 @@ void intel_csr_ucode_fini(struct drm_device *dev) void assert_csr_loaded(struct drm_i915_private *dev_priv) { - WARN(intel_csr_load_status_get(dev_priv) != FW_LOADED, - "CSR is not loaded.\n"); WARN(!I915_READ(CSR_PROGRAM_BASE), "CSR program storage start is NULL\n"); WARN(!I915_READ(CSR_SSP_BASE), "CSR SSP Base Not fine\n"); diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index e6156d5..a9bb299 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -644,21 +644,10 @@ static void skl_set_power_well(struct drm_i915_private *dev_priv, if ((GEN9_ENABLE_DC5(dev) || SKL_ENABLE_DC6(dev)) && power_well->data == SKL_DISP_PW_2) { - enum csr_state state; - /* TODO: wait for a completion event or - * similar here instead of busy - * waiting using wait_for function. - */ - wait_for((state = intel_csr_load_status_get(dev_priv)) != - FW_UNINITIALIZED, 1000); - if (state != FW_LOADED) - DRM_ERROR("CSR firmware not ready (%d)\n", - state); + if (SKL_ENABLE_DC6(dev)) + skl_enable_dc6(dev_priv); else - if (SKL_ENABLE_DC6(dev)) - skl_enable_dc6(dev_priv); - else - gen9_enable_dc5(dev_priv); + gen9_enable_dc5(dev_priv); } } }