From patchwork Fri Jul 14 16:14:14 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kieran Bingham X-Patchwork-Id: 9841411 X-Patchwork-Delegate: geert@linux-m68k.org 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 44AEC602BD for ; Fri, 14 Jul 2017 16:14:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 34D5028748 for ; Fri, 14 Jul 2017 16:14:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 29E422878C; Fri, 14 Jul 2017 16:14:34 +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 D19FB28779 for ; Fri, 14 Jul 2017 16:14:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754666AbdGNQO2 (ORCPT ); Fri, 14 Jul 2017 12:14:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:37426 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754660AbdGNQO0 (ORCPT ); Fri, 14 Jul 2017 12:14:26 -0400 Received: from CookieMonster.cookiemonster.local (cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EF1E222CC1; Fri, 14 Jul 2017 16:14:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EF1E222CC1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=kieran.bingham+renesas@ideasonboard.com From: Kieran Bingham To: linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, Kieran Bingham Subject: [PATCH 5/6] v4l: vsp1: Convert LUT to use a fragment pool Date: Fri, 14 Jul 2017 17:14:14 +0100 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adapt the LUT to allocate a fragment pool for passing the table updates to hardware. Two bodies are pre-allocated in the pool to manage a userspace update before the hardware has taken a previous set of tables. Signed-off-by: Kieran Bingham --- drivers/media/platform/vsp1/vsp1_lut.c | 23 +++++++++++++++++++---- drivers/media/platform/vsp1/vsp1_lut.h | 1 + 2 files changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_lut.c b/drivers/media/platform/vsp1/vsp1_lut.c index c67cc60db0db..57482e057e54 100644 --- a/drivers/media/platform/vsp1/vsp1_lut.c +++ b/drivers/media/platform/vsp1/vsp1_lut.c @@ -23,6 +23,8 @@ #define LUT_MIN_SIZE 4U #define LUT_MAX_SIZE 8190U +#define LUT_SIZE 256 + /* ----------------------------------------------------------------------------- * Device Access */ @@ -44,11 +46,11 @@ static int lut_set_table(struct vsp1_lut *lut, struct v4l2_ctrl *ctrl) struct vsp1_dl_body *dlb; unsigned int i; - dlb = vsp1_dl_fragment_alloc(lut->entity.vsp1, 256); + dlb = vsp1_dl_fragment_get(lut->pool); if (!dlb) return -ENOMEM; - for (i = 0; i < 256; ++i) + for (i = 0; i < LUT_SIZE; ++i) vsp1_dl_fragment_write(dlb, VI6_LUT_TABLE + 4 * i, ctrl->p_new.p_u32[i]); @@ -56,7 +58,7 @@ static int lut_set_table(struct vsp1_lut *lut, struct v4l2_ctrl *ctrl) swap(lut->lut, dlb); spin_unlock_irq(&lut->lock); - vsp1_dl_fragment_free(dlb); + vsp1_dl_fragment_put(dlb); return 0; } @@ -87,7 +89,7 @@ static const struct v4l2_ctrl_config lut_table_control = { .max = 0x00ffffff, .step = 1, .def = 0, - .dims = { 256}, + .dims = { LUT_SIZE }, }; /* ----------------------------------------------------------------------------- @@ -217,8 +219,16 @@ static void lut_configure(struct vsp1_entity *entity, } } +static void lut_destroy(struct vsp1_entity *entity) +{ + struct vsp1_lut *lut = to_lut(&entity->subdev); + + vsp1_dl_fragment_pool_free(lut->pool); +} + static const struct vsp1_entity_operations lut_entity_ops = { .configure = lut_configure, + .destroy = lut_destroy, }; /* ----------------------------------------------------------------------------- @@ -244,6 +254,11 @@ struct vsp1_lut *vsp1_lut_create(struct vsp1_device *vsp1) if (ret < 0) return ERR_PTR(ret); + /* Allocate a fragment pool */ + lut->pool = vsp1_dl_fragment_pool_alloc(vsp1, 2, LUT_SIZE, 0); + if (!lut->pool) + return ERR_PTR(-ENOMEM); + /* Initialize the control handler. */ v4l2_ctrl_handler_init(&lut->ctrls, 1); v4l2_ctrl_new_custom(&lut->ctrls, &lut_table_control, NULL); diff --git a/drivers/media/platform/vsp1/vsp1_lut.h b/drivers/media/platform/vsp1/vsp1_lut.h index f8c4e8f0a79d..538563d57454 100644 --- a/drivers/media/platform/vsp1/vsp1_lut.h +++ b/drivers/media/platform/vsp1/vsp1_lut.h @@ -33,6 +33,7 @@ struct vsp1_lut { spinlock_t lock; struct vsp1_dl_body *lut; + struct vsp1_dl_fragment_pool *pool; }; static inline struct vsp1_lut *to_lut(struct v4l2_subdev *subdev)