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Tue, 10 Jan 2017 12:57:56 +0000 (GMT) From: Marek Szyprowski To: dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org Cc: Marek Szyprowski , Inki Dae , Joonyoung Shim , Seung-Woo Kim , Andrzej Hajda Subject: [PATCH] drm: exynos: Add runtime PM support to MIC driver Date: Tue, 10 Jan 2017 13:57:47 +0100 Message-id: <1484053067-31665-1-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrHIsWRmVeSWpSXmKPExsWy7djP87oht0oiDKa8MLO4te4cq8WVr+/Z LCbdn8Bi8eLeRRaLGef3MVmsPXKX3WLG5JdsDuwe97uPM3n0bVnF6PF5k1wAcxSXTUpqTmZZ apG+XQJXxr4bcxgLHvNXtG/3b2CcwNvFyMEhIWAi8XCWYRcjJ5ApJnHh3no2EFtIYCmjxKeD MV2MXED2Z0aJppYLrBBFJhJbZ79ghkgsY5TY1D+XBcJpYJLY/X4bI0gVm4ChRNfbLrBRIgJu Ek2HZ7KCFDELnGaU+PVpJyPIamEBJ4lzU/VAalgEVCUu39gL1ssr4CFx7MAkRohtchInj02G 2nyCTeLySyaIq2UlNh1ghgi7SPzdfpQFwhaWeHV8CzuELSNxeXI3VLwf6INWbQh7BqPEube8 ELa1xOHjF8HGMwvwSUzaNp0ZYjyvREebEESJh8S+lr1QFzhK9LX1sEICKFZiR8dG1gmM0gsY GVYxiqSWFuempxab6hUn5haX5qXrJefnbmIExuLpf8e/7mBceszqEKMAB6MSD2/EhOIIIdbE suLK3EOMEhzMSiK8PFdLIoR4UxIrq1KL8uOLSnNSiw8xSnOwKInz7llwJVxIID2xJDU7NbUg tQgmy8TBKdXAKGp56M66NI30BdJyzxudzF/NWPvgQDqP7cL5H1lTK3plBFqlepewLt+tGvhl j0tC4W8uI3m2y5eP/FmvMe3fAnXTbS+Ou0bZJPzdP1tmUcUez2OCr+wP7oq9xJH34lOr9B6B ndk+ORlHgh9IJ/w+mbyzIjD2/SWPJ28iuCwPxlw+qe5yaP2USUosxRmJhlrMRcWJAPh6eHzB AgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrGLMWRmVeSWpSXmKPExsVy+t/xK7o+t0oiDOYslrO4te4cq8WVr+/Z LCbdn8Bi8eLeRRaLGef3MVmsPXKX3WLG5JdsDuwe97uPM3n0bVnF6PF5k1wAc5SbTUZqYkpq kUJqXnJ+SmZeuq1SaIibroWSQl5ibqqtUoSub0iQkkJZYk4pkGdkgAYcnAPcg5X07RLcMvbd mMNY8Ji/on27fwPjBN4uRk4OCQETia2zXzBD2GISF+6tZ+ti5OIQEljCKNHZNokFwmlikphz bisrSBWbgKFE19suNhBbRMBNounwTFaQImaB04wSxz49ABrFwSEs4CRxbqoeSA2LgKrE5Rt7 GUFsXgEPiWMHJjFCbJOTOHlsMusERu4FjAyrGEVSS4tz03OLjfSKE3OLS/PS9ZLzczcxAsNw 27GfW3Ywdr0LPsQowMGoxMMbMaE4Qog1say4MvcQowQHs5IIL8/Vkggh3pTEyqrUovz4otKc 1OJDjKZAyycyS4km5wNjJK8k3tDE0NzS0MjYwsLcyEhJnHfqhyvhQgLpiSWp2ampBalFMH1M HJxSDYxmbt0x2//ENM6YctOao5BFe+4LG0fVv6yy5e0uPN/cGBU23ZicbxUtp3pG3zc8MSNm P9O0jEOf9Zz2J7a8Ckvc8nFGoKZSRsymjB9b/LzPPec73WTbYLSl71rWq4emKy+8btnT1SJz vq+b66/z/sWT7BXnHJTPqpAwTfeePT8x4t71Lo1pO5VYijMSDbWYi4oTAZLq611ZAgAA X-MTR: 20000000000000000@CPGS X-CMS-MailID: 20170110125756eucas1p1d9fe25f1ca7e0e982abaf2d71a607f0d X-Msg-Generator: CA X-Sender-IP: 182.198.249.180 X-Local-Sender: =?UTF-8?B?TWFyZWsgU3p5cHJvd3NraRtTUlBPTC1LZXJuZWwgKFRQKRs=?= =?UTF-8?B?7IK87ISx7KCE7J6QG1NlbmlvciBTb2Z0d2FyZSBFbmdpbmVlcg==?= X-Global-Sender: =?UTF-8?B?TWFyZWsgU3p5cHJvd3NraRtTUlBPTC1LZXJuZWwgKFRQKRtT?= =?UTF-8?B?YW1zdW5nIEVsZWN0cm9uaWNzG1NlbmlvciBTb2Z0d2FyZSBFbmdpbmVlcg==?= X-Sender-Code: =?UTF-8?B?QzEwG0VIURtDMTBDRDAyQ0QwMjczOTI=?= CMS-TYPE: 201P X-HopCount: 7 X-CMS-RootMailID: 20170110125756eucas1p1d9fe25f1ca7e0e982abaf2d71a607f0d X-RootMTR: 20170110125756eucas1p1d9fe25f1ca7e0e982abaf2d71a607f0d References: Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org This patch adds pm_runtime_get/put calls to notify device core when MIC device is really in use. This is needed to let power domain with this device to be turned off when display is turned off. Signed-off-by: Marek Szyprowski --- drivers/gpu/drm/exynos/exynos_drm_mic.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Reviewed-by: Chanwoo Choi diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c index a0def0be6d65..f643c380cb9a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_mic.c +++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -323,6 +324,7 @@ static void mic_post_disable(struct drm_bridge *bridge) for (i = NUM_CLKS - 1; i > -1; i--) clk_disable_unprepare(mic->clks[i]); + pm_runtime_put(mic->dev); mic->enabled = 0; already_disabled: @@ -338,6 +340,8 @@ static void mic_pre_enable(struct drm_bridge *bridge) if (mic->enabled) goto already_enabled; + pm_runtime_get_sync(mic->dev); + for (i = 0; i < NUM_CLKS; i++) { ret = clk_prepare_enable(mic->clks[i]); if (ret < 0) { @@ -473,8 +477,18 @@ static int exynos_mic_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mic); + pm_runtime_enable(dev); + + ret = component_add(dev, &exynos_mic_component_ops); + if (ret) + goto err_pm; + DRM_DEBUG_KMS("MIC has been probed\n"); - return component_add(dev, &exynos_mic_component_ops); + + return 0; + +err_pm: + pm_runtime_disable(dev); err: return ret; @@ -483,6 +497,7 @@ static int exynos_mic_probe(struct platform_device *pdev) static int exynos_mic_remove(struct platform_device *pdev) { component_del(&pdev->dev, &exynos_mic_component_ops); + pm_runtime_disable(&pdev->dev); return 0; }