From patchwork Mon Jun 19 11:40:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 13284366 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB24DEB64D9 for ; Mon, 19 Jun 2023 11:40:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231699AbjFSLk1 (ORCPT ); Mon, 19 Jun 2023 07:40:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231493AbjFSLk0 (ORCPT ); Mon, 19 Jun 2023 07:40:26 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D768100; Mon, 19 Jun 2023 04:40:25 -0700 (PDT) Received: from desky.lan (91-154-35-171.elisa-laajakaista.fi [91.154.35.171]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 4DA5AA58; Mon, 19 Jun 2023 13:39:48 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1687174789; bh=ZMpuciWCETwc7lQEv9HnJKd8W9LvjJ4bqzGbWy6ebM0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NekQdJabc75ZWy8pqkBibz1cN7FXsQ+5JiwM/M2lHCtcln+5h5tUBpHrguDYOo0aK p9Z1W4gzY0vT1MW5ZA67ZQ1FjrlOtwx2a0h6glG8RJUcAKlDAQjq7aJRUHqDcIYoVe nRPTFiPtskU/PGePNbo4sfV4q2z7tOs4iPqslIwQ= From: Tomi Valkeinen To: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Mauro Carvalho Chehab , Sakari Ailus , Laurent Pinchart , Jacopo Mondi , Jai Luthra , Vaishnav Achath Cc: Tomi Valkeinen Subject: [PATCH v4 3/4] media: ti: cal: Use subdev state Date: Mon, 19 Jun 2023 14:40:06 +0300 Message-Id: <20230619114007.297393-4-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230619114007.297393-1-tomi.valkeinen@ideasonboard.com> References: <20230619114007.297393-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Change TI CAL driver to use subdev state. No functional changes (intended). This allows us to get rid of the 'formats' field, as the formats are kept in the state, and also the 'mutex' as we already have state locking. Signed-off-by: Tomi Valkeinen Reviewed-by: Jacopo Mondi --- drivers/media/platform/ti/cal/cal-camerarx.c | 131 +++++-------------- drivers/media/platform/ti/cal/cal-video.c | 21 ++- drivers/media/platform/ti/cal/cal.h | 8 -- 3 files changed, 53 insertions(+), 107 deletions(-) diff --git a/drivers/media/platform/ti/cal/cal-camerarx.c b/drivers/media/platform/ti/cal/cal-camerarx.c index 97208d542f9e..bc09c3f1446d 100644 --- a/drivers/media/platform/ti/cal/cal-camerarx.c +++ b/drivers/media/platform/ti/cal/cal-camerarx.c @@ -50,10 +50,16 @@ static s64 cal_camerarx_get_ext_link_freq(struct cal_camerarx *phy) struct v4l2_mbus_config_mipi_csi2 *mipi_csi2 = &phy->endpoint.bus.mipi_csi2; u32 num_lanes = mipi_csi2->num_data_lanes; const struct cal_format_info *fmtinfo; + struct v4l2_subdev_state *state; + struct v4l2_mbus_framefmt *fmt; u32 bpp; s64 freq; - fmtinfo = cal_format_by_code(phy->formats[CAL_CAMERARX_PAD_SINK].code); + state = v4l2_subdev_get_locked_active_state(&phy->subdev); + + fmt = v4l2_subdev_get_pad_format(&phy->subdev, state, CAL_CAMERARX_PAD_SINK); + + fmtinfo = cal_format_by_code(fmt->code); if (!fmtinfo) return -EINVAL; @@ -620,34 +626,20 @@ static inline struct cal_camerarx *to_cal_camerarx(struct v4l2_subdev *sd) return container_of(sd, struct cal_camerarx, subdev); } -static struct v4l2_mbus_framefmt * -cal_camerarx_get_pad_format(struct cal_camerarx *phy, - struct v4l2_subdev_state *state, - unsigned int pad, u32 which) -{ - switch (which) { - case V4L2_SUBDEV_FORMAT_TRY: - return v4l2_subdev_get_try_format(&phy->subdev, state, pad); - case V4L2_SUBDEV_FORMAT_ACTIVE: - return &phy->formats[pad]; - default: - return NULL; - } -} - static int cal_camerarx_sd_s_stream(struct v4l2_subdev *sd, int enable) { struct cal_camerarx *phy = to_cal_camerarx(sd); + struct v4l2_subdev_state *state; int ret = 0; - mutex_lock(&phy->mutex); + state = v4l2_subdev_lock_and_get_active_state(sd); if (enable) ret = cal_camerarx_start(phy); else cal_camerarx_stop(phy); - mutex_unlock(&phy->mutex); + v4l2_subdev_unlock_state(state); return ret; } @@ -657,62 +649,44 @@ static int cal_camerarx_sd_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_mbus_code_enum *code) { struct cal_camerarx *phy = to_cal_camerarx(sd); - int ret = 0; - - mutex_lock(&phy->mutex); /* No transcoding, source and sink codes must match. */ if (cal_rx_pad_is_source(code->pad)) { struct v4l2_mbus_framefmt *fmt; - if (code->index > 0) { - ret = -EINVAL; - goto out; - } + if (code->index > 0) + return -EINVAL; - fmt = cal_camerarx_get_pad_format(phy, state, - CAL_CAMERARX_PAD_SINK, - code->which); + fmt = v4l2_subdev_get_pad_format(&phy->subdev, state, + CAL_CAMERARX_PAD_SINK); code->code = fmt->code; } else { - if (code->index >= cal_num_formats) { - ret = -EINVAL; - goto out; - } + if (code->index >= cal_num_formats) + return -EINVAL; code->code = cal_formats[code->index].code; } -out: - mutex_unlock(&phy->mutex); - - return ret; + return 0; } static int cal_camerarx_sd_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_frame_size_enum *fse) { - struct cal_camerarx *phy = to_cal_camerarx(sd); const struct cal_format_info *fmtinfo; - int ret = 0; if (fse->index > 0) return -EINVAL; - mutex_lock(&phy->mutex); - /* No transcoding, source and sink formats must match. */ if (cal_rx_pad_is_source(fse->pad)) { struct v4l2_mbus_framefmt *fmt; - fmt = cal_camerarx_get_pad_format(phy, state, - CAL_CAMERARX_PAD_SINK, - fse->which); - if (fse->code != fmt->code) { - ret = -EINVAL; - goto out; - } + fmt = v4l2_subdev_get_pad_format(sd, state, + CAL_CAMERARX_PAD_SINK); + if (fse->code != fmt->code) + return -EINVAL; fse->min_width = fmt->width; fse->max_width = fmt->width; @@ -720,10 +694,8 @@ static int cal_camerarx_sd_enum_frame_size(struct v4l2_subdev *sd, fse->max_height = fmt->height; } else { fmtinfo = cal_format_by_code(fse->code); - if (!fmtinfo) { - ret = -EINVAL; - goto out; - } + if (!fmtinfo) + return -EINVAL; fse->min_width = CAL_MIN_WIDTH_BYTES * 8 / ALIGN(fmtinfo->bpp, 8); fse->max_width = CAL_MAX_WIDTH_BYTES * 8 / ALIGN(fmtinfo->bpp, 8); @@ -731,27 +703,6 @@ static int cal_camerarx_sd_enum_frame_size(struct v4l2_subdev *sd, fse->max_height = CAL_MAX_HEIGHT_LINES; } -out: - mutex_unlock(&phy->mutex); - - return ret; -} - -static int cal_camerarx_sd_get_fmt(struct v4l2_subdev *sd, - struct v4l2_subdev_state *state, - struct v4l2_subdev_format *format) -{ - struct cal_camerarx *phy = to_cal_camerarx(sd); - struct v4l2_mbus_framefmt *fmt; - - mutex_lock(&phy->mutex); - - fmt = cal_camerarx_get_pad_format(phy, state, format->pad, - format->which); - format->format = *fmt; - - mutex_unlock(&phy->mutex); - return 0; } @@ -759,14 +710,13 @@ static int cal_camerarx_sd_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { - struct cal_camerarx *phy = to_cal_camerarx(sd); const struct cal_format_info *fmtinfo; struct v4l2_mbus_framefmt *fmt; unsigned int bpp; /* No transcoding, source and sink formats must match. */ if (cal_rx_pad_is_source(format->pad)) - return cal_camerarx_sd_get_fmt(sd, state, format); + return v4l2_subdev_get_fmt(sd, state, format); /* * Default to the first format if the requested media bus code isn't @@ -790,20 +740,13 @@ static int cal_camerarx_sd_set_fmt(struct v4l2_subdev *sd, /* Store the format and propagate it to the source pad. */ - mutex_lock(&phy->mutex); - - fmt = cal_camerarx_get_pad_format(phy, state, - CAL_CAMERARX_PAD_SINK, - format->which); + fmt = v4l2_subdev_get_pad_format(sd, state, CAL_CAMERARX_PAD_SINK); *fmt = format->format; - fmt = cal_camerarx_get_pad_format(phy, state, - CAL_CAMERARX_PAD_FIRST_SOURCE, - format->which); + fmt = v4l2_subdev_get_pad_format(sd, state, + CAL_CAMERARX_PAD_FIRST_SOURCE); *fmt = format->format; - mutex_unlock(&phy->mutex); - return 0; } @@ -837,7 +780,7 @@ static const struct v4l2_subdev_pad_ops cal_camerarx_pad_ops = { .init_cfg = cal_camerarx_sd_init_cfg, .enum_mbus_code = cal_camerarx_sd_enum_mbus_code, .enum_frame_size = cal_camerarx_sd_enum_frame_size, - .get_fmt = cal_camerarx_sd_get_fmt, + .get_fmt = v4l2_subdev_get_fmt, .set_fmt = cal_camerarx_sd_set_fmt, }; @@ -872,7 +815,6 @@ struct cal_camerarx *cal_camerarx_create(struct cal_dev *cal, phy->instance = instance; spin_lock_init(&phy->vc_lock); - mutex_init(&phy->mutex); phy->res = platform_get_resource_byname(pdev, IORESOURCE_MEM, (instance == 0) ? @@ -881,8 +823,7 @@ struct cal_camerarx *cal_camerarx_create(struct cal_dev *cal, phy->base = devm_ioremap_resource(cal->dev, phy->res); if (IS_ERR(phy->base)) { cal_err(cal, "failed to ioremap\n"); - ret = PTR_ERR(phy->base); - goto err_destroy_mutex; + return ERR_CAST(phy->base); } cal_dbg(1, cal, "ioresource %s at %pa - %pa\n", @@ -890,11 +831,11 @@ struct cal_camerarx *cal_camerarx_create(struct cal_dev *cal, ret = cal_camerarx_regmap_init(cal, phy); if (ret) - goto err_destroy_mutex; + return ERR_PTR(ret); ret = cal_camerarx_parse_dt(phy); if (ret) - goto err_destroy_mutex; + return ERR_PTR(ret); /* Initialize the V4L2 subdev and media entity. */ sd = &phy->subdev; @@ -913,23 +854,23 @@ struct cal_camerarx *cal_camerarx_create(struct cal_dev *cal, if (ret) goto err_node_put; - ret = cal_camerarx_sd_init_cfg(sd, NULL); + ret = v4l2_subdev_init_finalize(sd); if (ret) goto err_entity_cleanup; ret = v4l2_device_register_subdev(&cal->v4l2_dev, sd); if (ret) - goto err_entity_cleanup; + goto err_free_state; return phy; +err_free_state: + v4l2_subdev_cleanup(sd); err_entity_cleanup: media_entity_cleanup(&phy->subdev.entity); err_node_put: of_node_put(phy->source_ep_node); of_node_put(phy->source_node); -err_destroy_mutex: - mutex_destroy(&phy->mutex); return ERR_PTR(ret); } @@ -939,8 +880,8 @@ void cal_camerarx_destroy(struct cal_camerarx *phy) return; v4l2_device_unregister_subdev(&phy->subdev); + v4l2_subdev_cleanup(&phy->subdev); media_entity_cleanup(&phy->subdev.entity); of_node_put(phy->source_ep_node); of_node_put(phy->source_node); - mutex_destroy(&phy->mutex); } diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c index ed92e23d4b16..a8abcd0fee17 100644 --- a/drivers/media/platform/ti/cal/cal-video.c +++ b/drivers/media/platform/ti/cal/cal-video.c @@ -687,21 +687,34 @@ static void cal_release_buffers(struct cal_ctx *ctx, static int cal_video_check_format(struct cal_ctx *ctx) { const struct v4l2_mbus_framefmt *format; + struct v4l2_subdev_state *state; struct media_pad *remote_pad; + int ret = 0; remote_pad = media_pad_remote_pad_first(&ctx->pad); if (!remote_pad) return -ENODEV; - format = &ctx->phy->formats[remote_pad->index]; + state = v4l2_subdev_lock_and_get_active_state(&ctx->phy->subdev); + + format = v4l2_subdev_get_pad_format(&ctx->phy->subdev, state, remote_pad->index); + if (!format) { + ret = -EINVAL; + goto out; + } if (ctx->fmtinfo->code != format->code || ctx->v_fmt.fmt.pix.height != format->height || ctx->v_fmt.fmt.pix.width != format->width || - ctx->v_fmt.fmt.pix.field != format->field) - return -EPIPE; + ctx->v_fmt.fmt.pix.field != format->field) { + ret = -EPIPE; + goto out; + } - return 0; +out: + v4l2_subdev_unlock_state(state); + + return ret; } static int cal_start_streaming(struct vb2_queue *vq, unsigned int count) diff --git a/drivers/media/platform/ti/cal/cal.h b/drivers/media/platform/ti/cal/cal.h index de73d6d21b6f..55d4736fed18 100644 --- a/drivers/media/platform/ti/cal/cal.h +++ b/drivers/media/platform/ti/cal/cal.h @@ -177,7 +177,6 @@ struct cal_camerarx { struct v4l2_subdev subdev; struct media_pad pads[CAL_CAMERARX_NUM_PADS]; - struct v4l2_mbus_framefmt formats[CAL_CAMERARX_NUM_PADS]; /* protects the vc_* fields below */ spinlock_t vc_lock; @@ -185,13 +184,6 @@ struct cal_camerarx { u16 vc_frame_number[4]; u32 vc_sequence[4]; - /* - * Lock for camerarx ops. Protects: - * - formats - * - enable_count - */ - struct mutex mutex; - unsigned int enable_count; };