From patchwork Fri Mar 1 21:32:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 777891 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4587E58AB0 for ; Fri, 1 Mar 2024 21:32:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709328758; cv=none; b=PEZWcVi5PodPR07/V6T2Kt2BU2nrvb8pBaMkF0NFlngmhsRJgcNxKWEfk9/EJQ9T6r3XyJbb5izuMKgsHGFXwEgqOFOuhPYA7OwEUIUchTcP+bLmUmPeP9Ri3ZoaOwWsAkesstPYx4U5e6MlvbYRX8qcHAS+fn2liAv3TE0xNaQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709328758; c=relaxed/simple; bh=p5XWjfHFQEQMtYUFmn2TiCoVB3JSIptE2oi6yUfcEGM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NoqLfU3lUd+rA030Zrgpu0Ze6dU1SeKiU1Aqj8AP3vGIDfLPqQLBu6Ga6K1fQpWLc5avhEPEpiO2serUuVNylciJmOj4nymkVa4RXJ6evOd9sb0+bpKghBFPe/0geT4meWKeEcQBlguX+CMe56dZbjcZbMN8cZfuBpUzn7cCaT4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=rHm1V0Ji; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="rHm1V0Ji" Received: from pendragon.ideasonboard.com (89-27-53-110.bb.dnainternet.fi [89.27.53.110]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id C9E6B293D; Fri, 1 Mar 2024 22:32:17 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1709328738; bh=p5XWjfHFQEQMtYUFmn2TiCoVB3JSIptE2oi6yUfcEGM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rHm1V0Jif7GlUj43a2d+COVSXnTCd7KQJqim5pKIlSnhzEqFWv+1+IT8Ii2uv9NOS vcyacuCUOcNmD50LLRiVoNrwtRNU6cByN5Pi1JeTjAvWm9V23Qic1VsMB0x/uPfaKW oDsbsi8fzal3we0WDpyoTefbB9a5RtyFzE60oeHQ= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dave Stevenson , David Plowman , Jean-Michel Hautbois , Hans Verkuil , Naushir Patuck , Sakari Ailus , kernel-list@raspberrypi.com, linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com Subject: [PATCH v6 02/15] media: i2c: imx219: Add internal image sink pad Date: Fri, 1 Mar 2024 23:32:17 +0200 Message-ID: <20240301213231.10340-3-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240301213231.10340-1-laurent.pinchart@ideasonboard.com> References: <20240301213231.10340-1-laurent.pinchart@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Use the newly added internal pad API to expose the internal configuration of the sensor to userspace in a standard manner. This also paves the way for adding support for embedded data with an additional internal pad. To maintain compatibility with existing userspace that may operate on pad 0 unconditionally, keep the source pad numbered 0 and number the internal image pad 1. Signed-off-by: Laurent Pinchart --- drivers/media/i2c/imx219.c | 169 +++++++++++++++++++++++++++++-------- 1 file changed, 133 insertions(+), 36 deletions(-) diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c index 3878da50860e..817bf192e4d9 100644 --- a/drivers/media/i2c/imx219.c +++ b/drivers/media/i2c/imx219.c @@ -140,6 +140,7 @@ #define IMX219_DEFAULT_LINK_FREQ_4LANE 363000000 /* IMX219 native and active pixel array size. */ +#define IMX219_NATIVE_FORMAT MEDIA_BUS_FMT_SRGGB10_1X10 #define IMX219_NATIVE_WIDTH 3296U #define IMX219_NATIVE_HEIGHT 2480U #define IMX219_PIXEL_ARRAY_LEFT 8U @@ -312,9 +313,15 @@ static const struct imx219_mode supported_modes[] = { }, }; +enum imx219_pad_ids { + IMX219_PAD_SOURCE, + IMX219_PAD_IMAGE, + IMX219_NUM_PADS, +}; + struct imx219 { struct v4l2_subdev sd; - struct media_pad pad; + struct media_pad pads[IMX219_NUM_PADS]; struct regmap *regmap; struct clk *xclk; /* system clock to IMX219 */ @@ -374,7 +381,7 @@ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) int ret = 0; state = v4l2_subdev_get_locked_active_state(&imx219->sd); - format = v4l2_subdev_state_get_format(state, 0); + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); if (ctrl->id == V4L2_CID_VBLANK) { int exposure_max, exposure_def; @@ -593,8 +600,8 @@ static int imx219_set_framefmt(struct imx219 *imx219, u64 bin_h, bin_v; int ret = 0; - format = v4l2_subdev_state_get_format(state, 0); - crop = v4l2_subdev_state_get_crop(state, 0); + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); switch (format->code) { case MEDIA_BUS_FMT_SRGGB8_1X8: @@ -764,10 +771,25 @@ static int imx219_enum_mbus_code(struct v4l2_subdev *sd, { struct imx219 *imx219 = to_imx219(sd); - if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) - return -EINVAL; + if (code->pad == IMX219_PAD_IMAGE) { + /* The internal image pad is hardwired to the native format. */ + if (code->index) + return -EINVAL; - code->code = imx219_get_format_code(imx219, imx219_mbus_formats[code->index * 4]); + code->code = IMX219_NATIVE_FORMAT; + } else { + /* + * On the source pad, the sensor supports multiple raw formats + * with different bit depths. + */ + u32 format; + + if (code->index >= (ARRAY_SIZE(imx219_mbus_formats) / 4)) + return -EINVAL; + + format = imx219_mbus_formats[code->index * 4]; + code->code = imx219_get_format_code(imx219, format); + } return 0; } @@ -777,19 +799,25 @@ static int imx219_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_frame_size_enum *fse) { struct imx219 *imx219 = to_imx219(sd); - u32 code; - if (fse->index >= ARRAY_SIZE(supported_modes)) - return -EINVAL; + if (fse->pad == IMX219_PAD_IMAGE) { + if (fse->code != IMX219_NATIVE_FORMAT || fse->index > 0) + return -EINVAL; - code = imx219_get_format_code(imx219, fse->code); - if (fse->code != code) - return -EINVAL; + fse->min_width = IMX219_NATIVE_WIDTH; + fse->max_width = IMX219_NATIVE_WIDTH; + fse->min_height = IMX219_NATIVE_HEIGHT; + fse->max_height = IMX219_NATIVE_HEIGHT; + } else { + if (fse->code != imx219_get_format_code(imx219, fse->code) || + fse->index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; - fse->min_width = supported_modes[fse->index].width; - fse->max_width = fse->min_width; - fse->min_height = supported_modes[fse->index].height; - fse->max_height = fse->min_height; + fse->min_width = supported_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = supported_modes[fse->index].height; + fse->max_height = fse->min_height; + } return 0; } @@ -801,9 +829,17 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, struct imx219 *imx219 = to_imx219(sd); const struct imx219_mode *mode; struct v4l2_mbus_framefmt *format; + struct v4l2_rect *compose; struct v4l2_rect *crop; unsigned int bin_h, bin_v; + /* + * The driver is mode-based, the format can be set on the source pad + * only. + */ + if (fmt->pad != IMX219_PAD_SOURCE) + return v4l2_subdev_get_fmt(sd, state, fmt); + /* * Adjust the requested format to match the closest mode. The Bayer * order varies with flips. @@ -822,22 +858,51 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd, fmt->format.quantization = V4L2_QUANTIZATION_FULL_RANGE; fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; - format = v4l2_subdev_state_get_format(state, 0); + /* Propagate the format through the sensor. */ + + /* The image pad models the pixel array, and thus has a fixed size. */ + format = v4l2_subdev_state_get_format(state, IMX219_PAD_IMAGE); *format = fmt->format; + format->code = IMX219_NATIVE_FORMAT; + format->width = IMX219_NATIVE_WIDTH; + format->height = IMX219_NATIVE_HEIGHT; /* * Use binning to maximize the crop rectangle size, and centre it in the * sensor. */ - bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / format->width, 2U); - bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / format->height, 2U); + bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / fmt->format.width, 2U); + bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / fmt->format.height, 2U); - crop = v4l2_subdev_state_get_crop(state, 0); - crop->width = format->width * bin_h; - crop->height = format->height * bin_v; + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_IMAGE); + crop->width = fmt->format.width * bin_h; + crop->height = fmt->format.height * bin_v; crop->left = (IMX219_NATIVE_WIDTH - crop->width) / 2; crop->top = (IMX219_NATIVE_HEIGHT - crop->height) / 2; + /* + * The compose rectangle models binning, its size is the sensor output + * size. + */ + compose = v4l2_subdev_state_get_compose(state, IMX219_PAD_IMAGE); + compose->left = 0; + compose->top = 0; + compose->width = fmt->format.width; + compose->height = fmt->format.height; + + /* + * No mode use digital crop, the source pad crop rectangle size and + * format are thus identical to the image pad compose rectangle. + */ + crop = v4l2_subdev_state_get_crop(state, IMX219_PAD_SOURCE); + crop->left = 0; + crop->top = 0; + crop->width = fmt->format.width; + crop->height = fmt->format.height; + + format = v4l2_subdev_state_get_format(state, IMX219_PAD_SOURCE); + *format = fmt->format; + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { int exposure_max; int exposure_def; @@ -874,13 +939,13 @@ static int imx219_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_selection *sel) { - switch (sel->target) { - case V4L2_SEL_TGT_CROP: { - sel->r = *v4l2_subdev_state_get_crop(state, 0); - return 0; - } + struct v4l2_rect *compose; + switch (sel->target) { case V4L2_SEL_TGT_NATIVE_SIZE: + if (sel->pad != IMX219_PAD_IMAGE) + return -EINVAL; + sel->r.top = 0; sel->r.left = 0; sel->r.width = IMX219_NATIVE_WIDTH; @@ -890,11 +955,35 @@ static int imx219_get_selection(struct v4l2_subdev *sd, case V4L2_SEL_TGT_CROP_DEFAULT: case V4L2_SEL_TGT_CROP_BOUNDS: - sel->r.top = IMX219_PIXEL_ARRAY_TOP; - sel->r.left = IMX219_PIXEL_ARRAY_LEFT; - sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; - sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; + switch (sel->pad) { + case IMX219_PAD_IMAGE: + sel->r.top = IMX219_PIXEL_ARRAY_TOP; + sel->r.left = IMX219_PIXEL_ARRAY_LEFT; + sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; + sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; + return 0; + case IMX219_PAD_SOURCE: + compose = v4l2_subdev_state_get_compose(state, + IMX219_PAD_IMAGE); + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = compose->width; + sel->r.height = compose->height; + return 0; + } + + break; + + case V4L2_SEL_TGT_CROP: + sel->r = *v4l2_subdev_state_get_crop(state, sel->pad); + return 0; + + case V4L2_SEL_TGT_COMPOSE: + if (sel->pad != IMX219_PAD_IMAGE) + return -EINVAL; + + sel->r = *v4l2_subdev_state_get_compose(state, sel->pad); return 0; } @@ -906,7 +995,7 @@ static int imx219_init_state(struct v4l2_subdev *sd, { struct v4l2_subdev_format fmt = { .which = V4L2_SUBDEV_FORMAT_TRY, - .pad = 0, + .pad = IMX219_PAD_SOURCE, .format = { .code = MEDIA_BUS_FMT_SRGGB10_1X10, .width = supported_modes[0].width, @@ -1174,10 +1263,18 @@ static int imx219_probe(struct i2c_client *client) V4L2_SUBDEV_FL_HAS_EVENTS; imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; - /* Initialize source pad */ - imx219->pad.flags = MEDIA_PAD_FL_SOURCE; + /* + * Initialize the pads. To preserve backward compatibility with + * userspace that used the sensor before the introduction of the + * internal image pad, the external source pad is numbered 0 and the + * internal image pad numbered 1. + */ + imx219->pads[IMX219_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + imx219->pads[IMX219_PAD_IMAGE].flags = MEDIA_PAD_FL_SINK + | MEDIA_PAD_FL_INTERNAL; - ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad); + ret = media_entity_pads_init(&imx219->sd.entity, + ARRAY_SIZE(imx219->pads), imx219->pads); if (ret) { dev_err(dev, "failed to init entity pads: %d\n", ret); goto error_handler_free;