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Tue, 28 Feb 2017 08:18:11 +0000 (GMT) X-AuditID: b6c32a2c-f79b56d0000012f0-82-58b532431662 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm2new.samsung.com (EPCPMTA) with SMTP id 9B.19.06422.34235B85; Tue, 28 Feb 2017 17:18:11 +0900 (KST) Received: from localhost.localdomain ([10.113.63.38]) by mmp2.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0OM200JH6SE80Q80@mmp2.samsung.com>; Tue, 28 Feb 2017 17:18:11 +0900 (KST) From: Hoegeun Kwon To: inki.dae@samsung.com, jy0922.shim@samsung.com, sw0312.kim@samsung.com, airlied@linux.ie, kgene@kernel.org, krzk@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, catalin.marinas@arm.com, will.deacon@arm.com Subject: [RESEND PATCH v2 1/5] drm/exynos: dsi: Fix the parse_dt function Date: Tue, 28 Feb 2017 17:17:55 +0900 Message-id: <1488269879-28876-2-git-send-email-hoegeun.kwon@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1488269879-28876-1-git-send-email-hoegeun.kwon@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAAz2Sa0gUURTHuzOzs6O1MW1Wt61smRIqdHPW1y20B0lNGCTUBzHCBp12LXd2 21kji2gLtDTNVQuzrIzykVrKplmJZSZpfdAepmWl9mCzFxalIVE0u2Nxv/zO4f8/59zDoXCt k9RRqaJDsIt8GkP6E9fuLl4cEmtsTAitK1KhvK77GBqpyAXoXHuXCvWMjpBopDKHRIWDLgJ9 /lKLoeGBRwTKf/sJR93d9WrkfturQk9ulpLoZPctDJX3PcJQZku7Gp0s+kCiD986iVXTuNqz tYBzV2eTXNPYkIobPNqBcVcvHuAa8l+puWMN1YD77g6MpxKFaLPApwh2vSAmW1NSRVMME7cp aU1SRGQoG8IuQ1GMXuQtQgwTuyE+ZG1qmvwNRr+bT0uXU/G8JDFLV0TbrekOQW+2So4YZgvL Gg1saJTBaDQawsO2LjdGyJJtgrkuZ6XtDr2nKXuccIIWTQ7woyAdDg/ePE0qPBM+HKiT2Z/S 0uUAZlW+wJTgMAZdD7qIHED5HC/e7FTypQB6OpsJr1tL/wSwpifByyQdAkdz+3zmALofwIeX SnBvgNNfACy5VKz2qqbT62Hr2FPgZYIOgs2Pz/tYQ3PQPfILV2YKhPfvFam87CfrCzwuXyFI P1bD7MvOiZHmQXfrhD4WXh7uJRSeDj92NKgVngN/l/cDxXsUwJ+HqiYKuQAcd9ZPuMPg4NCA j3F6Ksz79Q5TGmjgkSytghyseh+tqFfDrJpO4v8qPmX+AS4wtwxMqgYzBZtkMQlShI01SLxF ShdNhmSrxQ1817ck+DoYKItrAzQFmCmaqhMNCVoVv1vKsLQBSOFMgObIuJzSpPAZewW7Ncme niZIbSBC3lMBrpuRbJVvWXQkseGRbLhxmfyi2ChmliYxtCBBS5t4h7BTEGyC/Z8Po/x0TlDY f2Hy0z8pu3oKHswumS1uf92Y1/pj2teMoH38xtroV/k63Ybcis14xzWKfrmIOhZ2/MLYmnXq /GqWqgzcUVbfPPV22MLW8eKajgVLgyPb7xmMp2zmTHEw9Zn+/N59sU3Pb1zxBLlMb0bBnOH9 Gk9h9rv5FatK5zVuLK5cmxhwJt7DEJKZZ5fgdon/C+Ki2VyTAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrDIsWRmVeSWpSXmKPExsVy+t9jQV1no60RBjNOaFr0njvJZPF+WQ+j xfwj51gtrnx9z2bxfnkXm8Wk+xNYLN68XcNk8eLeRRaL/sevmS3On9/AbrHp8TVWi8u75rBZ zDi/j8li6fWLTBate4+wW8yY/JLN4uXHEywOgh5r5q1h9Ni0qpPNY/u3B6we97uPM3lsXlLv saX/LrtH35ZVjB6fN8kFcES52WSkJqakFimk5iXnp2TmpdsqhYa46VooKeQl5qbaKkXo+oYE KSmUJeaUAnlGBmjAwTnAPVhJ3y7BLWN9l33BQYGK7Z0/WRoY9/J2MXJwSAiYSNx+lN3FyAlk iklcuLeerYuRi0NIYBajxJ7udawQzndGiedPfrGDVLEJ6Ep87bnOBJIQEbjFKHFm+hmwFmaB t4wSd17/YwapEhbwlDjw7SojiM0ioCqx+9JCMJtXwENi0/vfzBD75CROHpvMCmJzAtVPfDaB GeQkIaCaplmmExh5FzAyrGKUSC1ILihOSs81ykst1ytOzC0uzUvXS87P3cQIjqln0jsYD+9y P8QowMGoxMNrYbwlQog1say4MvcQowQHs5IIb8dPoBBvSmJlVWpRfnxRaU5q8SFGU6C7JjJL iSbnA+M9ryTe0MTcxNzYwMLc0tLESEmct3H2s3AhgfTEktTs1NSC1CKYPiYOTqkGRvsjGg2m /m8DRayczkwyKPOae1b3erld2GzH2EqB/l1fp/zp3OklcWF28vq5HDH+ExUSH1z/xdb88oKj gMjZFem9/FcVhdiOvvNV7XJ/bK22bIVr2ur9W2bO/VOaK7f6+e4Dh8vXmbZ+FPpV9jAzMyx7 S/mWmrRdel8vHNv8+fi1wMM3WeS0G5VYijMSDbWYi4oTAQsNYZ+/AgAA X-MTR: 20000000000000000@CPGS X-CMS-MailID: 20170228081811epcas5p3931e12839e81f94b58bbd5eaa7a4b63b X-Msg-Generator: CA X-Sender-IP: 203.254.230.27 X-Local-Sender: =?UTF-8?B?6raM7ZqM6re8G1RpemVuIFBsYXRmb3JtIExhYihTL1fshLw=?= =?UTF-8?B?7YSwKRvsgrzshLHsoITsnpAbUzMo7IKs7JuQKS/sgqzsm5A=?= X-Global-Sender: =?UTF-8?B?SG9lZ2V1biBLd29uG1RpemVuIFBsYXRmb3JtIExhYi4bU2Ft?= =?UTF-8?B?c3VuZyBFbGVjdHJvbmljcxtTMy9Bc3Npc3RhbnQgRW5naW5lZXI=?= X-Sender-Code: =?UTF-8?B?QzEwG1NUQUYbQzEwVjgxMTE=?= CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-HopCount: 7 X-CMS-RootMailID: 20170228081811epcas5p3931e12839e81f94b58bbd5eaa7a4b63b X-RootMTR: 20170228081811epcas5p3931e12839e81f94b58bbd5eaa7a4b63b References: <1488269879-28876-1-git-send-email-hoegeun.kwon@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170228_001841_234664_27C30B2D X-CRM114-Status: GOOD ( 14.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, javier@osg.samsung.com, Hoegeun Kwon , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The dsi + panel is a parental relationship, so OF grpah is not needed. Therefore, the current dsi_parse_dt function will throw an error, because there is no linked OF graph for case such as fimd + dsi + panel. So this patch parse the Pll, burst and esc clock frequency properties in dsi_parse_dt and modified to create a bridge_node only if there is an OF graph associated with dsi. So I think the ABI breakage is needed. Signed-off-by: Hoegeun Kwon Reviewed-by: Andrzej Hajda --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 32 ++++++++------------------------ 1 file changed, 8 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index f5c04d0..2d4e118 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1652,39 +1652,23 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi) if (ret < 0) return ret; - ep = of_graph_get_endpoint_by_regs(node, DSI_PORT_OUT, 0); - if (!ep) { - dev_err(dev, "no output port with endpoint specified\n"); - return -EINVAL; - } - - ret = exynos_dsi_of_read_u32(ep, "samsung,burst-clock-frequency", + ret = exynos_dsi_of_read_u32(node, "samsung,burst-clock-frequency", &dsi->burst_clk_rate); if (ret < 0) - goto end; + return ret; - ret = exynos_dsi_of_read_u32(ep, "samsung,esc-clock-frequency", + ret = exynos_dsi_of_read_u32(node, "samsung,esc-clock-frequency", &dsi->esc_clk_rate); if (ret < 0) - goto end; - - of_node_put(ep); + return ret; ep = of_graph_get_next_endpoint(node, NULL); - if (!ep) { - ret = -EINVAL; - goto end; - } - - dsi->bridge_node = of_graph_get_remote_port_parent(ep); - if (!dsi->bridge_node) { - ret = -EINVAL; - goto end; + if (ep) { + dsi->bridge_node = of_graph_get_remote_port_parent(ep); + of_node_put(ep); } -end: - of_node_put(ep); - return ret; + return 0; } static int exynos_dsi_bind(struct device *dev, struct device *master,