From: Stephane Viau <sviau@codeaurora.org> To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 04/10] drm/msm/mdp5: Avoid printing error messages for optional clocks Date: Tue, 15 Sep 2015 08:41:47 -0400 [thread overview] Message-ID: <1442320913-3248-5-git-send-email-sviau@codeaurora.org> (raw) In-Reply-To: <1442320913-3248-1-git-send-email-sviau@codeaurora.org> The current behavior is to try to get optional clocks and print a dev_err message in case of failure. This looks rather confusing and may increase with the amount of optional clocks. We may need a cleaner way to handle per-device clocks but in the meantime, let's reduce the amount of dev_err messages during the probe. Signed-off-by: Stephane Viau <sviau@codeaurora.org> --- Documentation/devicetree/bindings/drm/msm/mdp.txt | 3 ++- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 27 ++++++++++++++--------- 2 files changed, 18 insertions(+), 12 deletions(-) diff --git a/Documentation/devicetree/bindings/drm/msm/mdp.txt b/Documentation/devicetree/bindings/drm/msm/mdp.txt index 1a0598e..0833eda 100644 --- a/Documentation/devicetree/bindings/drm/msm/mdp.txt +++ b/Documentation/devicetree/bindings/drm/msm/mdp.txt @@ -11,13 +11,14 @@ Required properties: - clock-names: the following clocks are required: * "core_clk" * "iface_clk" - * "lut_clk" * "src_clk" * "hdmi_clk" * "mpd_clk" Optional properties: - gpus: phandle for gpu device +- clock-names: the following clocks are optional: + * "lut_clk" Example: diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index e11028c6..61fcb41 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -454,15 +454,19 @@ static void read_hw_revision(struct mdp5_kms *mdp5_kms, } static int get_clk(struct platform_device *pdev, struct clk **clkp, - const char *name) + const char *name, bool mandatory) { struct device *dev = &pdev->dev; struct clk *clk = devm_clk_get(dev, name); - if (IS_ERR(clk)) { + if (IS_ERR(clk) && mandatory) { dev_err(dev, "failed to get %s (%ld)\n", name, PTR_ERR(clk)); return PTR_ERR(clk); } - *clkp = clk; + if (IS_ERR(clk)) + DBG("skipping %s", name); + else + *clkp = clk; + return 0; } @@ -516,25 +520,26 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev) goto fail; } - ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk"); + /* mandatory clocks: */ + ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk"); + ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->src_clk, "core_clk_src"); + ret = get_clk(pdev, &mdp5_kms->src_clk, "core_clk_src", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->core_clk, "core_clk"); + ret = get_clk(pdev, &mdp5_kms->core_clk, "core_clk", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk"); - if (ret) - DBG("failed to get (optional) lut_clk clock"); - ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk"); + ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk", true); if (ret) goto fail; + /* optional clocks: */ + get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk", false); + /* we need to set a default rate before enabling. Set a safe * rate first, then figure out hw revision, and then set a * more optimal rate: -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: Stephane Viau <sviau@codeaurora.org> To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, robdclark@gmail.com, Stephane Viau <sviau@codeaurora.org> Subject: [PATCH 04/10] drm/msm/mdp5: Avoid printing error messages for optional clocks Date: Tue, 15 Sep 2015 08:41:47 -0400 [thread overview] Message-ID: <1442320913-3248-5-git-send-email-sviau@codeaurora.org> (raw) In-Reply-To: <1442320913-3248-1-git-send-email-sviau@codeaurora.org> The current behavior is to try to get optional clocks and print a dev_err message in case of failure. This looks rather confusing and may increase with the amount of optional clocks. We may need a cleaner way to handle per-device clocks but in the meantime, let's reduce the amount of dev_err messages during the probe. Signed-off-by: Stephane Viau <sviau@codeaurora.org> --- Documentation/devicetree/bindings/drm/msm/mdp.txt | 3 ++- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 27 ++++++++++++++--------- 2 files changed, 18 insertions(+), 12 deletions(-) diff --git a/Documentation/devicetree/bindings/drm/msm/mdp.txt b/Documentation/devicetree/bindings/drm/msm/mdp.txt index 1a0598e..0833eda 100644 --- a/Documentation/devicetree/bindings/drm/msm/mdp.txt +++ b/Documentation/devicetree/bindings/drm/msm/mdp.txt @@ -11,13 +11,14 @@ Required properties: - clock-names: the following clocks are required: * "core_clk" * "iface_clk" - * "lut_clk" * "src_clk" * "hdmi_clk" * "mpd_clk" Optional properties: - gpus: phandle for gpu device +- clock-names: the following clocks are optional: + * "lut_clk" Example: diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index e11028c6..61fcb41 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -454,15 +454,19 @@ static void read_hw_revision(struct mdp5_kms *mdp5_kms, } static int get_clk(struct platform_device *pdev, struct clk **clkp, - const char *name) + const char *name, bool mandatory) { struct device *dev = &pdev->dev; struct clk *clk = devm_clk_get(dev, name); - if (IS_ERR(clk)) { + if (IS_ERR(clk) && mandatory) { dev_err(dev, "failed to get %s (%ld)\n", name, PTR_ERR(clk)); return PTR_ERR(clk); } - *clkp = clk; + if (IS_ERR(clk)) + DBG("skipping %s", name); + else + *clkp = clk; + return 0; } @@ -516,25 +520,26 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev) goto fail; } - ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk"); + /* mandatory clocks: */ + ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk"); + ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->src_clk, "core_clk_src"); + ret = get_clk(pdev, &mdp5_kms->src_clk, "core_clk_src", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->core_clk, "core_clk"); + ret = get_clk(pdev, &mdp5_kms->core_clk, "core_clk", true); if (ret) goto fail; - ret = get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk"); - if (ret) - DBG("failed to get (optional) lut_clk clock"); - ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk"); + ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk", true); if (ret) goto fail; + /* optional clocks: */ + get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk", false); + /* we need to set a default rate before enabling. Set a safe * rate first, then figure out hw revision, and then set a * more optimal rate: -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2015-09-15 12:41 UTC|newest] Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-09-15 12:41 [PATCH 00/10] drm/msm: Add support for MSM8996 Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 01/10] drm/msm/mdp5: remove the cfg pointer from SMP struct Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 02/10] drm/msm/mdp5: Disable hardware translation table walks (MSM8996) Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 03/10] drm/msm: Fix IOMMU clean up path in case msm_iommu_new() fails Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` Stephane Viau [this message] 2015-09-15 12:41 ` [PATCH 04/10] drm/msm/mdp5: Avoid printing error messages for optional clocks Stephane Viau 2015-09-15 12:41 ` [PATCH 05/10] drm/msm/mdp5: Vote for SMMU power when performing translations Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 06/10] drm/msm/hdmi: Add basic HDMI support for msm8996 Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 07/10] drm/msm/mdp: Update generated headers (Pixel Extension) Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:45 ` [PATCH] rnndb: Add Pixel Extension registers Stephane Viau 2015-09-15 12:45 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 08/10] drm/msm/mdp5: Use the newly introduced enum mdp_component_type Stephane Viau 2015-09-15 12:41 ` [PATCH 09/10] drm/msm/mdp: Add Software Pixel Extension support Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 10/10] drm/msm/mdp5: Basic support for MDP5 v1.7 (MSM8996) Stephane Viau 2015-09-15 12:41 ` Stephane Viau
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