From patchwork Wed Mar 9 10:57:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Archit Taneja X-Patchwork-Id: 8545271 Return-Path: X-Original-To: patchwork-dri-devel@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 60C87C0553 for ; Wed, 9 Mar 2016 10:58:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8F63E202A1 for ; Wed, 9 Mar 2016 10:58:13 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id A7BE1201D3 for ; Wed, 9 Mar 2016 10:58:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4BE006E8D6; Wed, 9 Mar 2016 10:58:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8618D6E8D6 for ; Wed, 9 Mar 2016 10:57:52 +0000 (UTC) Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id 652A760F71; Wed, 9 Mar 2016 10:57:52 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 5139460F32; Wed, 9 Mar 2016 10:57:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (unknown [202.46.23.61]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: architt@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 2AB4660B00; Wed, 9 Mar 2016 10:57:50 +0000 (UTC) From: Archit Taneja To: dri-devel@lists.freedesktop.org Subject: [PATCH v3 6/7] drm/i2c: adv7511: Change number of DSI lanes dynamically Date: Wed, 9 Mar 2016 16:27:17 +0530 Message-Id: <1457521038-5906-7-git-send-email-architt@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1457521038-5906-1-git-send-email-architt@codeaurora.org> References: <1441625800-1858-1-git-send-email-architt@codeaurora.org> <1457521038-5906-1-git-send-email-architt@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP Cc: andy.green@linaro.org, linux-arm-msm@vger.kernel.org, amit.kucheria@linaro.org, srinivas.kandagatla@linaro.org, laurent.pinchart@ideasonboard.com, treding@nvidia.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Lower modes on ADV7533 require lower number of DSI lanes for correct operation. If ADV7533 is being used with 4 DSI lanes, then switch the lanes to 3 when the target mode's pixel clock is less than 80 Mhz. Based on patch by Andy Green Signed-off-by: Archit Taneja --- drivers/gpu/drm/i2c/adv7511.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c index 88918ae..ca9e862 100644 --- a/drivers/gpu/drm/i2c/adv7511.c +++ b/drivers/gpu/drm/i2c/adv7511.c @@ -863,6 +863,26 @@ static void adv7511_mode_set(struct adv7511 *adv7511, regmap_update_bits(adv7511->regmap, 0x17, 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); + if (adv7511->type == ADV7533 && adv7511->num_dsi_lanes == 4) { + struct mipi_dsi_device *dsi = adv7511->dsi; + int lanes, ret; + + if (adj_mode->clock > 80000) + lanes = 4; + else + lanes = 3; + + if (lanes != dsi->lanes) { + mipi_dsi_detach(dsi); + dsi->lanes = lanes; + ret = mipi_dsi_attach(dsi); + if (ret) { + DRM_ERROR("Failed to change host lanes\n"); + return; + } + } + } + drm_mode_copy(&adv7511->curr_mode, adj_mode); /*