From patchwork Fri Apr 15 08:11:10 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 710331 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p3F8BaFb017297 for ; Fri, 15 Apr 2011 08:11:39 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751910Ab1DOILh (ORCPT ); Fri, 15 Apr 2011 04:11:37 -0400 Received: from na3sys009aog106.obsmtp.com ([74.125.149.77]:38992 "EHLO na3sys009aog106.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751794Ab1DOILe (ORCPT ); Fri, 15 Apr 2011 04:11:34 -0400 Received: from mail-wy0-f178.google.com ([74.125.82.178]) (using TLSv1) by na3sys009aob106.postini.com ([74.125.148.12]) with SMTP ID DSNKTaf9tWilJTGgIbuuFzicgU8v+113ucju@postini.com; Fri, 15 Apr 2011 01:11:34 PDT Received: by mail-wy0-f178.google.com with SMTP id 33so2493672wyb.37 for ; Fri, 15 Apr 2011 01:11:33 -0700 (PDT) Received: by 10.227.176.135 with SMTP id be7mr1821919wbb.0.1302855093171; Fri, 15 Apr 2011 01:11:33 -0700 (PDT) Received: from deskari (a62-248-131-233.elisa-laajakaista.fi [62.248.131.233]) by mx.google.com with ESMTPS id y12sm1450529wby.8.2011.04.15.01.11.31 (version=SSLv3 cipher=OTHER); Fri, 15 Apr 2011 01:11:32 -0700 (PDT) From: Tomi Valkeinen To: linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org Cc: archit@ti.com, Tomi Valkeinen Subject: [PATCH 4/5] OMAP: DSS2: DSI: Fix DSI PLL power bug Date: Fri, 15 Apr 2011 11:11:10 +0300 Message-Id: <1302855071-5510-5-git-send-email-tomi.valkeinen@ti.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1302855071-5510-1-git-send-email-tomi.valkeinen@ti.com> References: <1302855071-5510-1-git-send-email-tomi.valkeinen@ti.com> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Fri, 15 Apr 2011 08:11:39 +0000 (UTC) OMAP3630 has a HW bug causing DSI PLL power command POWER_ON_DIV (0x3) to not work properly. The bug prevents us from enabling DSI PLL power only to HS divider block. This patch adds a dss feature for the bug and converts POWER_ON_DIV requests to POWER_ON_ALL (0x2). Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dsi.c | 5 +++++ drivers/video/omap2/dss/dss_features.c | 2 +- drivers/video/omap2/dss/dss_features.h | 2 ++ 3 files changed, 8 insertions(+), 1 deletions(-) diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 1464ac4..cbd9ca4 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -1059,6 +1059,11 @@ static int dsi_pll_power(enum dsi_pll_power_state state) { int t = 0; + /* DSI-PLL power command 0x3 is not working */ + if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) && + state == DSI_PLL_POWER_ON_DIV) + state = DSI_PLL_POWER_ON_ALL; + REG_FLD_MOD(DSI_CLK_CTRL, state, 31, 30); /* PLL_PWR_CMD */ /* PLL_PWR_STATUS */ diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c index aa16222..8c50e18 100644 --- a/drivers/video/omap2/dss/dss_features.c +++ b/drivers/video/omap2/dss/dss_features.c @@ -271,7 +271,7 @@ static struct omap_dss_features omap3630_dss_features = { FEAT_LCDENABLESIGNAL | FEAT_PCKFREEENABLE | FEAT_PRE_MULT_ALPHA | FEAT_FUNCGATED | FEAT_ROWREPEATENABLE | FEAT_LINEBUFFERSPLIT | - FEAT_RESIZECONF, + FEAT_RESIZECONF | FEAT_DSI_PLL_PWR_BUG, .num_mgrs = 2, .num_ovls = 3, diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h index 12e9c4e..37922ce 100644 --- a/drivers/video/omap2/dss/dss_features.h +++ b/drivers/video/omap2/dss/dss_features.h @@ -40,6 +40,8 @@ enum dss_feat_id { /* Independent core clk divider */ FEAT_CORE_CLK_DIV = 1 << 11, FEAT_LCD_CLK_SRC = 1 << 12, + /* DSI-PLL power command 0x3 is not working */ + FEAT_DSI_PLL_PWR_BUG = 1 << 13, }; /* DSS register field id */