From patchwork Thu Jul 7 23:03:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steve Longerbeam X-Patchwork-Id: 9220043 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 2D30C60574 for ; Fri, 8 Jul 2016 05:26:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1EE6E2840B for ; Fri, 8 Jul 2016 05:26:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 137C628411; Fri, 8 Jul 2016 05:26:58 +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=-4.1 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A95392840B for ; Fri, 8 Jul 2016 05:26:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7F6836E88B; Fri, 8 Jul 2016 05:26:51 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pf0-x241.google.com (mail-pf0-x241.google.com [IPv6:2607:f8b0:400e:c00::241]) by gabe.freedesktop.org (Postfix) with ESMTPS id 838E26E003 for ; Thu, 7 Jul 2016 23:04:17 +0000 (UTC) Received: by mail-pf0-x241.google.com with SMTP id 66so2921641pfy.1 for ; Thu, 07 Jul 2016 16:04:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Ho4y476DIAXyblS4Ku2TBJ+gfyBhsu6DspgC0zxYUEc=; b=hjmAI0l0EEIzaT41WpEMKWZgvrTRJIl0ySgSXg+ty99JiLca8ObqIJvB5enKTRKX7t tVzrThuqZrPzwSin3eHqfQhJMe6Q3NFMf48Kstd+CCVpNBhYe7NlYdxCMZpSxp7mWyD6 t+XwMm4Q5o389/7CL6p5thTKRJU6O17WFxou718jJDlufblH2UcEK48OTZVXVPEx9Loq r0dQ9fsK/vMzL6+/IEIJ8NdTrBaQoQoIMeRgk/g/OKvNKOm18KJ53jCYQwO4FxcbrGmw tp0UDd4HgdbawH+J0UM9YZjirqHIsT6zUHBRhErDvzdtV4p0icvUfMQhIeL4ucBqR5Mt lMHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Ho4y476DIAXyblS4Ku2TBJ+gfyBhsu6DspgC0zxYUEc=; b=ACa4zrUbkN3TuCSI1VjyjMPq6rkaePxW/vmwfWKSfbgGZ35W826DA8PPbrhpo9eYDo SOh+/cQeUxOkhXvqrCl/lKS0cHuPSx3WiBhV4QipVoOxtlX6PbpREmxRNMyh9c5s0FK8 kzun1kwz5cZLv1OBHBNgF/W9zxrR1bDuuewOQPqCTnSTu9zSOfIQpFtRxLmz4mqIUfZm 80X/w0/Qq3pzsDv2LHRZg5oUqaZeIuEsrThqrwhxeFdlimzP1lWrzk/QzCY5kVE7br1B e15WoJiphgFREjF5EfbJfVRAGIuxOuxQoqSnxyho7tIAdP6ZafVPVmE7gmYN/ANQQhbz dqSA== X-Gm-Message-State: ALyK8tJmD+Fids0rzNTFkZmkkGfOGyvUtXUeeiXxP7MXk1En6G7Dea2v7YaxwLxKpryVwA== X-Received: by 10.98.210.66 with SMTP id c63mr4479403pfg.25.1467932656838; Thu, 07 Jul 2016 16:04:16 -0700 (PDT) Received: from mothership.sklembedded.com (c-73-241-2-21.hsd1.ca.comcast.net. [73.241.2.21]) by smtp.googlemail.com with ESMTPSA id z29sm6846719pff.0.2016.07.07.16.04.16 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 07 Jul 2016 16:04:16 -0700 (PDT) From: Steve Longerbeam X-Google-Original-From: Steve Longerbeam To: p.zabel@pengutronix.de Subject: [PATCH 05/16] gpu: ipu-v3: Add IDMA channel linking support Date: Thu, 7 Jul 2016 16:03:30 -0700 Message-Id: <1467932621-358-6-git-send-email-steve_longerbeam@mentor.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1467932621-358-1-git-send-email-steve_longerbeam@mentor.com> References: <1467932621-358-1-git-send-email-steve_longerbeam@mentor.com> X-Mailman-Approved-At: Fri, 08 Jul 2016 05:26:19 +0000 Cc: Steve Longerbeam , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org 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 Adds functions to link and unlink IDMAC source channels to sink channels. So far the following links are supported: IPUV3_CHANNEL_IC_PRP_ENC_MEM -> IPUV3_CHANNEL_MEM_ROT_ENC PUV3_CHANNEL_IC_PRP_VF_MEM -> IPUV3_CHANNEL_MEM_ROT_VF IPUV3_CHANNEL_IC_PP_MEM -> IPUV3_CHANNEL_MEM_ROT_PP More links can be added to the idmac_link_info[] array. Signed-off-by: Steve Longerbeam --- drivers/gpu/ipu-v3/ipu-common.c | 112 ++++++++++++++++++++++++++++++++++++++++ include/video/imx-ipu-v3.h | 3 ++ 2 files changed, 115 insertions(+) diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c index 49af121..6d1676e 100644 --- a/drivers/gpu/ipu-v3/ipu-common.c +++ b/drivers/gpu/ipu-v3/ipu-common.c @@ -730,6 +730,118 @@ void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi) } EXPORT_SYMBOL_GPL(ipu_set_ic_src_mux); + +/* IDMAC Channel Linking */ + +struct idmac_link_reg_info { + int chno; + u32 reg; + int shift; + int bits; + u32 sel; +}; + +struct idmac_link_info { + struct idmac_link_reg_info src; + struct idmac_link_reg_info sink; +}; + +static const struct idmac_link_info idmac_link_info[] = { + { + .src = { 20, IPU_FS_PROC_FLOW1, 0, 4, 7 }, + .sink = { 45, IPU_FS_PROC_FLOW2, 0, 4, 1 }, + }, { + .src = { 21, IPU_FS_PROC_FLOW1, 8, 4, 8 }, + .sink = { 46, IPU_FS_PROC_FLOW2, 4, 4, 1 }, + }, { + .src = { 22, IPU_FS_PROC_FLOW1, 16, 4, 5 }, + .sink = { 47, IPU_FS_PROC_FLOW2, 12, 4, 3 }, + }, +}; + +static const struct idmac_link_info *find_idmac_link_info( + struct ipuv3_channel *src, struct ipuv3_channel *sink) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(idmac_link_info); i++) { + if (src->num == idmac_link_info[i].src.chno && + sink->num == idmac_link_info[i].sink.chno) + return &idmac_link_info[i]; + } + + return NULL; +} + +/* + * Links an IDMAC source channel to a sink channel. + */ +int ipu_idmac_link(struct ipuv3_channel *src, struct ipuv3_channel *sink) +{ + struct ipu_soc *ipu = src->ipu; + const struct idmac_link_info *link; + u32 src_reg, sink_reg, src_mask, sink_mask; + unsigned long flags; + + link = find_idmac_link_info(src, sink); + if (!link) + return -EINVAL; + + src_mask = ((1 << link->src.bits) - 1) << link->src.shift; + sink_mask = ((1 << link->sink.bits) - 1) << link->sink.shift; + + spin_lock_irqsave(&ipu->lock, flags); + + src_reg = ipu_cm_read(ipu, link->src.reg); + sink_reg = ipu_cm_read(ipu, link->sink.reg); + + src_reg &= ~src_mask; + src_reg |= (link->src.sel << link->src.shift); + + sink_reg &= ~sink_mask; + sink_reg |= (link->sink.sel << link->sink.shift); + + ipu_cm_write(ipu, src_reg, link->src.reg); + ipu_cm_write(ipu, sink_reg, link->sink.reg); + + spin_unlock_irqrestore(&ipu->lock, flags); + return 0; +} +EXPORT_SYMBOL_GPL(ipu_idmac_link); + +/* + * Unlinks IDMAC source and sink channels. + */ +int ipu_idmac_unlink(struct ipuv3_channel *src, struct ipuv3_channel *sink) +{ + struct ipu_soc *ipu = src->ipu; + const struct idmac_link_info *link; + u32 src_reg, sink_reg, src_mask, sink_mask; + unsigned long flags; + + link = find_idmac_link_info(src, sink); + if (!link) + return -EINVAL; + + src_mask = ((1 << link->src.bits) - 1) << link->src.shift; + sink_mask = ((1 << link->sink.bits) - 1) << link->sink.shift; + + spin_lock_irqsave(&ipu->lock, flags); + + src_reg = ipu_cm_read(ipu, link->src.reg); + sink_reg = ipu_cm_read(ipu, link->sink.reg); + + src_reg &= ~src_mask; + sink_reg &= ~sink_mask; + + ipu_cm_write(ipu, src_reg, link->src.reg); + ipu_cm_write(ipu, sink_reg, link->sink.reg); + + spin_unlock_irqrestore(&ipu->lock, flags); + return 0; +} +EXPORT_SYMBOL_GPL(ipu_idmac_unlink); + struct ipu_devtype { const char *name; unsigned long cm_ofs; diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index b174f8a..0a39c64 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -128,6 +128,7 @@ enum ipu_channel_irq { #define IPUV3_CHANNEL_ROT_VF_MEM 49 #define IPUV3_CHANNEL_ROT_PP_MEM 50 #define IPUV3_CHANNEL_MEM_BG_SYNC_ALPHA 51 +#define IPUV3_NUM_CHANNELS 64 int ipu_map_irq(struct ipu_soc *ipu, int irq); int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel, @@ -171,6 +172,8 @@ int ipu_idmac_get_current_buffer(struct ipuv3_channel *channel); bool ipu_idmac_buffer_is_ready(struct ipuv3_channel *channel, u32 buf_num); void ipu_idmac_select_buffer(struct ipuv3_channel *channel, u32 buf_num); void ipu_idmac_clear_buffer(struct ipuv3_channel *channel, u32 buf_num); +int ipu_idmac_link(struct ipuv3_channel *src, struct ipuv3_channel *sink); +int ipu_idmac_unlink(struct ipuv3_channel *src, struct ipuv3_channel *sink); /* * IPU Channel Parameter Memory (cpmem) functions