1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 2013-2015 Ideas on Board
6  * Copyright (C) 2013-2015 Xilinx, Inc.
18 #include <dt-bindings/media/xilinx-vip.h>
20 #include "xilinx-vip.h"
22 /* -----------------------------------------------------------------------------
48  * xvip_get_format_by_code - Retrieve format information for a media bus code
49  * @code: the format media bus code
52  * given V4L2 media bus format @code, or ERR_PTR if no corresponding format can
62 		if (format->code == code)  in xvip_get_format_by_code()
66 	return ERR_PTR(-EINVAL);  in xvip_get_format_by_code()
71  * xvip_get_format_by_fourcc - Retrieve format information for a 4CC
85 		if (format->fourcc == fourcc)  in xvip_get_format_by_fourcc()
94  * xvip_of_get_format - Parse a device tree node and return format information
97  * Read the xlnx,video-format, xlnx,video-width and xlnx,cfa-pattern properties
102  * format name and width, or ERR_PTR if no corresponding format can be found.
109 	u32 width;  in xvip_of_get_format()  local
112 	ret = of_property_read_u32(node, "xlnx,video-format", &vf_code);  in xvip_of_get_format()
116 	ret = of_property_read_u32(node, "xlnx,video-width", &width);  in xvip_of_get_format()
121 		of_property_read_string(node, "xlnx,cfa-pattern", &pattern);  in xvip_of_get_format()
126 		if (format->vf_code != vf_code || format->width != width)  in xvip_of_get_format()
130 		    strcmp(pattern, format->pattern))  in xvip_of_get_format()
136 	return ERR_PTR(-EINVAL);  in xvip_of_get_format()
141  * xvip_set_format_size - Set the media bus frame format size
142  * @format: V4L2 frame format on media bus
143  * @fmt: media bus format
145  * Set the media bus frame format size. The width / height from the subdevice
146  * format are set to the given media bus format. The new format size is stored
147  * in @format. The width and height are clamped using default min / max values.
152 	format->width = clamp_t(unsigned int, fmt->format.width,  in xvip_set_format_size()
154 	format->height = clamp_t(unsigned int, fmt->format.height,  in xvip_set_format_size()
160  * xvip_clr_or_set - Clear or set the register with a bitmask
187  * xvip_clr_and_set - Clear and set the register with a bitmask
209 	struct platform_device *pdev = to_platform_device(xvip->dev);  in xvip_init_resources()
211 	xvip->iomem = devm_platform_ioremap_resource(pdev, 0);  in xvip_init_resources()
212 	if (IS_ERR(xvip->iomem))  in xvip_init_resources()
213 		return PTR_ERR(xvip->iomem);  in xvip_init_resources()
215 	xvip->clk = devm_clk_get(xvip->dev, NULL);  in xvip_init_resources()
216 	if (IS_ERR(xvip->clk))  in xvip_init_resources()
217 		return PTR_ERR(xvip->clk);  in xvip_init_resources()
219 	clk_prepare_enable(xvip->clk);  in xvip_init_resources()
226 	clk_disable_unprepare(xvip->clk);  in xvip_cleanup_resources()
230 /* -----------------------------------------------------------------------------
235  * xvip_enum_mbus_code - Enumerate the media format code
238  * @code: returning media bus code
240  * Enumerate the media bus code of the subdevice. Return the corresponding
245  * Return: 0 if the media bus code is found, or -EINVAL if the format index
257 	if (code->which == V4L2_SUBDEV_FORMAT_ACTIVE)  in xvip_enum_mbus_code()
258 		return -EINVAL;  in xvip_enum_mbus_code()
260 	if (code->index)  in xvip_enum_mbus_code()
261 		return -EINVAL;  in xvip_enum_mbus_code()
263 	format = v4l2_subdev_state_get_format(sd_state, code->pad);  in xvip_enum_mbus_code()
265 	code->code = format->code;  in xvip_enum_mbus_code()
272  * xvip_enum_frame_size - Enumerate the media bus frame size
275  * @fse: returning media bus frame size
277  * This function is a drop-in implementation of the subdev enum_frame_size pad
283  * Return: 0 if the media bus frame size is found, or -EINVAL
295 	if (fse->which == V4L2_SUBDEV_FORMAT_ACTIVE)  in xvip_enum_frame_size()
296 		return -EINVAL;  in xvip_enum_frame_size()
298 	format = v4l2_subdev_state_get_format(sd_state, fse->pad);  in xvip_enum_frame_size()
300 	if (fse->index || fse->code != format->code)  in xvip_enum_frame_size()
301 		return -EINVAL;  in xvip_enum_frame_size()
303 	if (fse->pad == XVIP_PAD_SINK) {  in xvip_enum_frame_size()
304 		fse->min_width = XVIP_MIN_WIDTH;  in xvip_enum_frame_size()
305 		fse->max_width = XVIP_MAX_WIDTH;  in xvip_enum_frame_size()
306 		fse->min_height = XVIP_MIN_HEIGHT;  in xvip_enum_frame_size()
307 		fse->max_height = XVIP_MAX_HEIGHT;  in xvip_enum_frame_size()
312 		fse->min_width = format->width;  in xvip_enum_frame_size()
313 		fse->max_width = format->width;  in xvip_enum_frame_size()
314 		fse->min_height = format->height;  in xvip_enum_frame_size()
315 		fse->max_height = format->height;  in xvip_enum_frame_size()