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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 BAD55C43441 for ; Tue, 13 Nov 2018 14:03:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8B85F2080D for ; Tue, 13 Nov 2018 14:03:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B85F2080D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388250AbeKNABg (ORCPT ); Tue, 13 Nov 2018 19:01:36 -0500 Received: from ns.mm-sol.com ([37.157.136.199]:60905 "EHLO extserv.mm-sol.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387500AbeKNABf (ORCPT ); Tue, 13 Nov 2018 19:01:35 -0500 Received: from mms-0439.qualcomm.mm-sol.com (unknown [37.157.136.206]) by extserv.mm-sol.com (Postfix) with ESMTPSA id 726CDCDCF; Tue, 13 Nov 2018 16:03:16 +0200 (EET) From: Todor Tomov To: mchehab@kernel.org, linux-media@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Todor Tomov Subject: [PATCH] media: camss: Take in account sensor skip frames Date: Tue, 13 Nov 2018 16:03:07 +0200 Message-Id: <1542117787-24155-1-git-send-email-todor.tomov@linaro.org> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When streaming is starting ask the sensor for its skip frames value. Max supported frame skip is 29 frames, so clip it if it is higher. Signed-off-by: Todor Tomov --- drivers/media/platform/qcom/camss/camss-vfe.c | 23 ++++++++++++++++++----- drivers/media/platform/qcom/camss/camss.c | 2 +- drivers/media/platform/qcom/camss/camss.h | 1 + 3 files changed, 20 insertions(+), 6 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c index ed6a557..a8c542fa 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.c +++ b/drivers/media/platform/qcom/camss/camss-vfe.c @@ -37,9 +37,9 @@ /* VFE halt timeout */ #define VFE_HALT_TIMEOUT_MS 100 /* Max number of frame drop updates per frame */ -#define VFE_FRAME_DROP_UPDATES 5 -/* Frame drop value. NOTE: VAL + UPDATES should not exceed 31 */ -#define VFE_FRAME_DROP_VAL 20 +#define VFE_FRAME_DROP_UPDATES 2 +/* Frame drop value. VAL + UPDATES - 1 should not exceed 31 */ +#define VFE_FRAME_DROP_VAL 30 #define VFE_NEXT_SOF_MS 500 @@ -659,7 +659,9 @@ static int vfe_enable_output(struct vfe_line *line) struct vfe_device *vfe = to_vfe(line); struct vfe_output *output = &line->output; const struct vfe_hw_ops *ops = vfe->ops; + struct media_entity *sensor; unsigned long flags; + unsigned int frame_skip = 0; unsigned int i; u16 ub_size; @@ -667,6 +669,17 @@ static int vfe_enable_output(struct vfe_line *line) if (!ub_size) return -EINVAL; + sensor = camss_find_sensor(&line->subdev.entity); + if (sensor) { + struct v4l2_subdev *subdev = + media_entity_to_v4l2_subdev(sensor); + + v4l2_subdev_call(subdev, sensor, g_skip_frames, &frame_skip); + /* Max frame skip is 29 frames */ + if (frame_skip > VFE_FRAME_DROP_VAL - 1) + frame_skip = VFE_FRAME_DROP_VAL - 1; + } + spin_lock_irqsave(&vfe->output_lock, flags); ops->reg_update_clear(vfe, line->id); @@ -695,10 +708,10 @@ static int vfe_enable_output(struct vfe_line *line) switch (output->state) { case VFE_OUTPUT_SINGLE: - vfe_output_frame_drop(vfe, output, 1); + vfe_output_frame_drop(vfe, output, 1 << frame_skip); break; case VFE_OUTPUT_CONTINUOUS: - vfe_output_frame_drop(vfe, output, 3); + vfe_output_frame_drop(vfe, output, 3 << frame_skip); break; default: vfe_output_frame_drop(vfe, output, 0); diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index 669615f..b307f6e 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -346,7 +346,7 @@ void camss_disable_clocks(int nclocks, struct camss_clock *clock) * * Return a pointer to sensor media entity or NULL if not found */ -static struct media_entity *camss_find_sensor(struct media_entity *entity) +struct media_entity *camss_find_sensor(struct media_entity *entity) { struct media_pad *pad; diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h index 418996d..c488f63 100644 --- a/drivers/media/platform/qcom/camss/camss.h +++ b/drivers/media/platform/qcom/camss/camss.h @@ -107,6 +107,7 @@ void camss_add_clock_margin(u64 *rate); int camss_enable_clocks(int nclocks, struct camss_clock *clock, struct device *dev); void camss_disable_clocks(int nclocks, struct camss_clock *clock); +struct media_entity *camss_find_sensor(struct media_entity *entity); int camss_get_pixel_clock(struct media_entity *entity, u32 *pixel_clock); int camss_pm_domain_on(struct camss *camss, int id); void camss_pm_domain_off(struct camss *camss, int id); -- 2.7.4