From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7169AC2D0A3 for ; Mon, 26 Oct 2020 23:53:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 382FC21D7B for ; Mon, 26 Oct 2020 23:53:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603756408; bh=8JTEb6R/KWIinrBT6TmYsYwNQ9bXkQw4E7WuXn2k6N4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=E4xu+BgR1s+pxfGFCcDXD6dVpZvTZ+2PwzDzawoyrAXybXHvFeVmxVh49EWXcOnle JWMneW74E7LOoTfSacqGOhLGJPijwSiwzzX8rxzglNpyJWjPW4MF/lIPhw9+GX87CV YDjmQi8V+apnH8+hdLGwAC4p0frJMMbDaafTc0ng= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2410082AbgJZXx0 (ORCPT ); Mon, 26 Oct 2020 19:53:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:56714 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2409942AbgJZXxC (ORCPT ); Mon, 26 Oct 2020 19:53:02 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2DB3E20882; Mon, 26 Oct 2020 23:53:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603756381; bh=8JTEb6R/KWIinrBT6TmYsYwNQ9bXkQw4E7WuXn2k6N4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OP+DY5rE2jdpq9esLtH8OltMQv+XZCbIrFEyS51cu5KNyrup6ULBx4oiVkP4mYjNI XIIS1xTiD/X5C4Bcer/ggwhEWJm3SDxFyx2yHBWI2CYegX9Tdkj4Cx+6mwd8wCRxWL BHuceE4CW0Ixt6RS47JP2Qg9LlU204ppMmpVRzGA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Antonio Borneo , Philippe Cornu , Neil Armstrong , Sasha Levin , dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.8 046/132] drm/bridge/synopsys: dsi: add support for non-continuous HS clock Date: Mon, 26 Oct 2020 19:50:38 -0400 Message-Id: <20201026235205.1023962-46-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201026235205.1023962-1-sashal@kernel.org> References: <20201026235205.1023962-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Antonio Borneo [ Upstream commit c6d94e37bdbb6dfe7e581e937a915ab58399b8a5 ] Current code enables the HS clock when video mode is started or to send out a HS command, and disables the HS clock to send out a LP command. This is not what DSI spec specify. Enable HS clock either in command and in video mode. Set automatic HS clock management for panels and devices that support non-continuous HS clock. Signed-off-by: Antonio Borneo Tested-by: Philippe Cornu Reviewed-by: Philippe Cornu Acked-by: Neil Armstrong Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20200701194234.18123-1-yannick.fertre@st.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 5ef0f154aa7bd..1dd57db184c89 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -366,7 +366,6 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi, if (lpm) val |= CMD_MODE_ALL_LP; - dsi_write(dsi, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS); dsi_write(dsi, DSI_CMD_MODE_CFG, val); } @@ -542,16 +541,22 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi) static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi, unsigned long mode_flags) { + u32 val; + dsi_write(dsi, DSI_PWR_UP, RESET); if (mode_flags & MIPI_DSI_MODE_VIDEO) { dsi_write(dsi, DSI_MODE_CFG, ENABLE_VIDEO_MODE); dw_mipi_dsi_video_mode_config(dsi); - dsi_write(dsi, DSI_LPCLK_CTRL, PHY_TXREQUESTCLKHS); } else { dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE); } + val = PHY_TXREQUESTCLKHS; + if (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) + val |= AUTO_CLKLANE_CTRL; + dsi_write(dsi, DSI_LPCLK_CTRL, val); + dsi_write(dsi, DSI_PWR_UP, POWERUP); } -- 2.25.1