From patchwork Thu Mar 2 10:16:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Machek X-Patchwork-Id: 9599833 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 04690600CB for ; Thu, 2 Mar 2017 10:16:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E001427317 for ; Thu, 2 Mar 2017 10:16:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D47DE2859B; Thu, 2 Mar 2017 10:16:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7647D27317 for ; Thu, 2 Mar 2017 10:16:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751735AbdCBKQM (ORCPT ); Thu, 2 Mar 2017 05:16:12 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:37955 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750947AbdCBKQH (ORCPT ); Thu, 2 Mar 2017 05:16:07 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 672A781997; Thu, 2 Mar 2017 11:16:04 +0100 (CET) Date: Thu, 2 Mar 2017 11:16:04 +0100 From: Pavel Machek To: Laurent Pinchart Cc: Sakari Ailus , mchehab@kernel.org, kernel list , ivo.g.dimitrov.75@gmail.com, sre@kernel.org, pali.rohar@gmail.com, linux-media@vger.kernel.org Subject: [PATCHv2] omap3isp: add support for CSI1 bus Message-ID: <20170302101603.GE27818@amd> References: <20161228183036.GA13139@amd> <10545906.Gxg3yScdu4@avalon> <20170215094228.GA8586@amd> <2414221.XNA4JCFMRx@avalon> <20170302090143.GB27818@amd> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20170302090143.GB27818@amd> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hi! > > > >> +++ b/drivers/media/platform/omap3isp/ispccp2.c > > > >> @@ -160,6 +163,33 @@ static int ccp2_if_enable(struct isp_ccp2_device > > > >> *ccp2, u8 enable) return ret; > > > >> > > > >> } > > > >> > > > >> + if (isp->revision == ISP_REVISION_2_0) { > > > > > > > > The isp_csiphy.c code checks phy->isp->phy_type for the same purpose, > > > > shouldn't you use that too ? > > > > > > Do you want me to do phy->isp->phy_type == ISP_PHY_TYPE_3430 check > > > here? Can do... > > > > Yes that's what I meant. > > Ok, that's something I can do. > > But code is still somewhat "interesting". Code in omap3isp_csiphy_acquire() > assumes csi2, and I don't need most of it.. so I'll just not use it, > but it looks strange. I'll post new patch shortly. Ok, how about this one? Pavel omap3isp: add rest of CSI1 support CSI1 needs one more bit to be set up. Do just that. It is not as straightforward as I'd like, see the comments in the code for explanation. Signed-off-by: Pavel Machek index ca09523..b6e055e 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -21,6 +23,7 @@ #include #include #include +#include #include "isp.h" #include "ispreg.h" @@ -160,6 +163,22 @@ static int ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable) return ret; } + if (isp->phy_type == ISP_PHY_TYPE_3430) { + struct media_pad *pad; + struct v4l2_subdev *sensor; + const struct isp_ccp2_cfg *buscfg; + + pad = media_entity_remote_pad(&ccp2->pads[CCP2_PAD_SINK]); + sensor = media_entity_to_v4l2_subdev(pad->entity); + /* Struct isp_bus_cfg has union inside */ + buscfg = &((struct isp_bus_cfg *)sensor->host_priv)->bus.ccp2; + + csiphy_routing_cfg_3430(&isp->isp_csiphy2, + ISP_INTERFACE_CCP2B_PHY1, + enable, !!buscfg->phy_layer, + buscfg->strobe_clk_pol); + } + /* Enable/Disable all the LCx channels */ for (i = 0; i < CCP2_LCx_CHANS_NUM; i++) isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(i), @@ -1137,10 +1159,19 @@ int omap3isp_ccp2_init(struct isp_device *isp) if (isp->revision == ISP_REVISION_2_0) { ccp2->vdds_csib = devm_regulator_get(isp->dev, "vdds_csib"); if (IS_ERR(ccp2->vdds_csib)) { + if (PTR_ERR(ccp2->vdds_csib) == -EPROBE_DEFER) + return -EPROBE_DEFER; dev_dbg(isp->dev, "Could not get regulator vdds_csib\n"); ccp2->vdds_csib = NULL; } + /* + * If we set up ccp2->phy here, + * omap3isp_csiphy_acquire() will go ahead and assume + * csi2, dereferencing some null pointers. + * + * ccp2->phy = &isp->isp_csiphy2; + */ } else if (isp->revision == ISP_REVISION_15_0) { ccp2->phy = &isp->isp_csiphy1; } diff --git a/drivers/media/platform/omap3isp/ispcsiphy.c b/drivers/media/platform/omap3isp/ispcsiphy.c index 871d4fe..897097b 100644 --- a/drivers/media/platform/omap3isp/ispcsiphy.c +++ b/drivers/media/platform/omap3isp/ispcsiphy.c @@ -68,8 +68,8 @@ static void csiphy_routing_cfg_3630(struct isp_csiphy *phy, regmap_write(phy->isp->syscon, phy->isp->syscon_offset, reg); } -static void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool on, - bool ccp2_strobe) +void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool on, + bool ccp2_strobe, bool strobe_clk_pol) { u32 csirxfe = OMAP343X_CONTROL_CSIRXFE_PWRDNZ | OMAP343X_CONTROL_CSIRXFE_RESET; @@ -85,6 +85,9 @@ static void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool on, if (ccp2_strobe) csirxfe |= OMAP343X_CONTROL_CSIRXFE_SELFORM; + + if (strobe_clk_pol) + csirxfe |= OMAP343X_CONTROL_CSIRXFE_CSIB_INV; regmap_write(phy->isp->syscon, phy->isp->syscon_offset, csirxfe); } @@ -108,7 +111,7 @@ static void csiphy_routing_cfg(struct isp_csiphy *phy, if (phy->isp->phy_type == ISP_PHY_TYPE_3630 && on) return csiphy_routing_cfg_3630(phy, iface, ccp2_strobe); if (phy->isp->phy_type == ISP_PHY_TYPE_3430) - return csiphy_routing_cfg_3430(phy, iface, on, ccp2_strobe); + return csiphy_routing_cfg_3430(phy, iface, on, ccp2_strobe, false); } /* diff --git a/drivers/media/platform/omap3isp/ispcsiphy.h b/drivers/media/platform/omap3isp/ispcsiphy.h index 28b63b2..88c5c1e8 100644 --- a/drivers/media/platform/omap3isp/ispcsiphy.h +++ b/drivers/media/platform/omap3isp/ispcsiphy.h @@ -40,4 +40,7 @@ int omap3isp_csiphy_acquire(struct isp_csiphy *phy); void omap3isp_csiphy_release(struct isp_csiphy *phy); int omap3isp_csiphy_init(struct isp_device *isp); +void csiphy_routing_cfg_3430(struct isp_csiphy *phy, u32 iface, bool on, + bool ccp2_strobe, bool strobe_clk_pol); + #endif /* OMAP3_ISP_CSI_PHY_H */