mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 08:49:13 +07:00
324 lines
9.6 KiB
C
324 lines
9.6 KiB
C
|
/*
|
||
|
* Xilinx Video IP Core
|
||
|
*
|
||
|
* Copyright (C) 2013-2015 Ideas on Board
|
||
|
* Copyright (C) 2013-2015 Xilinx, Inc.
|
||
|
*
|
||
|
* Contacts: Hyun Kwon <hyun.kwon@xilinx.com>
|
||
|
* Laurent Pinchart <laurent.pinchart@ideasonboard.com>
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or modify
|
||
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
* published by the Free Software Foundation.
|
||
|
*/
|
||
|
|
||
|
#include <linux/clk.h>
|
||
|
#include <linux/export.h>
|
||
|
#include <linux/kernel.h>
|
||
|
#include <linux/of.h>
|
||
|
#include <linux/platform_device.h>
|
||
|
|
||
|
#include <dt-bindings/media/xilinx-vip.h>
|
||
|
|
||
|
#include "xilinx-vip.h"
|
||
|
|
||
|
/* -----------------------------------------------------------------------------
|
||
|
* Helper functions
|
||
|
*/
|
||
|
|
||
|
static const struct xvip_video_format xvip_video_formats[] = {
|
||
|
{ XVIP_VF_YUV_422, 8, NULL, MEDIA_BUS_FMT_UYVY8_1X16,
|
||
|
2, V4L2_PIX_FMT_YUYV, "4:2:2, packed, YUYV" },
|
||
|
{ XVIP_VF_YUV_444, 8, NULL, MEDIA_BUS_FMT_VUY8_1X24,
|
||
|
3, V4L2_PIX_FMT_YUV444, "4:4:4, packed, YUYV" },
|
||
|
{ XVIP_VF_RBG, 8, NULL, MEDIA_BUS_FMT_RBG888_1X24,
|
||
|
3, 0, NULL },
|
||
|
{ XVIP_VF_MONO_SENSOR, 8, "mono", MEDIA_BUS_FMT_Y8_1X8,
|
||
|
1, V4L2_PIX_FMT_GREY, "Greyscale 8-bit" },
|
||
|
{ XVIP_VF_MONO_SENSOR, 8, "rggb", MEDIA_BUS_FMT_SRGGB8_1X8,
|
||
|
1, V4L2_PIX_FMT_SGRBG8, "Bayer 8-bit RGGB" },
|
||
|
{ XVIP_VF_MONO_SENSOR, 8, "grbg", MEDIA_BUS_FMT_SGRBG8_1X8,
|
||
|
1, V4L2_PIX_FMT_SGRBG8, "Bayer 8-bit GRBG" },
|
||
|
{ XVIP_VF_MONO_SENSOR, 8, "gbrg", MEDIA_BUS_FMT_SGBRG8_1X8,
|
||
|
1, V4L2_PIX_FMT_SGBRG8, "Bayer 8-bit GBRG" },
|
||
|
{ XVIP_VF_MONO_SENSOR, 8, "bggr", MEDIA_BUS_FMT_SBGGR8_1X8,
|
||
|
1, V4L2_PIX_FMT_SBGGR8, "Bayer 8-bit BGGR" },
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* xvip_get_format_by_code - Retrieve format information for a media bus code
|
||
|
* @code: the format media bus code
|
||
|
*
|
||
|
* Return: a pointer to the format information structure corresponding to the
|
||
|
* given V4L2 media bus format @code, or ERR_PTR if no corresponding format can
|
||
|
* be found.
|
||
|
*/
|
||
|
const struct xvip_video_format *xvip_get_format_by_code(unsigned int code)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(xvip_video_formats); ++i) {
|
||
|
const struct xvip_video_format *format = &xvip_video_formats[i];
|
||
|
|
||
|
if (format->code == code)
|
||
|
return format;
|
||
|
}
|
||
|
|
||
|
return ERR_PTR(-EINVAL);
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_get_format_by_code);
|
||
|
|
||
|
/**
|
||
|
* xvip_get_format_by_fourcc - Retrieve format information for a 4CC
|
||
|
* @fourcc: the format 4CC
|
||
|
*
|
||
|
* Return: a pointer to the format information structure corresponding to the
|
||
|
* given V4L2 format @fourcc, or ERR_PTR if no corresponding format can be
|
||
|
* found.
|
||
|
*/
|
||
|
const struct xvip_video_format *xvip_get_format_by_fourcc(u32 fourcc)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(xvip_video_formats); ++i) {
|
||
|
const struct xvip_video_format *format = &xvip_video_formats[i];
|
||
|
|
||
|
if (format->fourcc == fourcc)
|
||
|
return format;
|
||
|
}
|
||
|
|
||
|
return ERR_PTR(-EINVAL);
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_get_format_by_fourcc);
|
||
|
|
||
|
/**
|
||
|
* xvip_of_get_format - Parse a device tree node and return format information
|
||
|
* @node: the device tree node
|
||
|
*
|
||
|
* Read the xlnx,video-format, xlnx,video-width and xlnx,cfa-pattern properties
|
||
|
* from the device tree @node passed as an argument and return the corresponding
|
||
|
* format information.
|
||
|
*
|
||
|
* Return: a pointer to the format information structure corresponding to the
|
||
|
* format name and width, or ERR_PTR if no corresponding format can be found.
|
||
|
*/
|
||
|
const struct xvip_video_format *xvip_of_get_format(struct device_node *node)
|
||
|
{
|
||
|
const char *pattern = "mono";
|
||
|
unsigned int vf_code;
|
||
|
unsigned int i;
|
||
|
u32 width;
|
||
|
int ret;
|
||
|
|
||
|
ret = of_property_read_u32(node, "xlnx,video-format", &vf_code);
|
||
|
if (ret < 0)
|
||
|
return ERR_PTR(ret);
|
||
|
|
||
|
ret = of_property_read_u32(node, "xlnx,video-width", &width);
|
||
|
if (ret < 0)
|
||
|
return ERR_PTR(ret);
|
||
|
|
||
|
if (vf_code == XVIP_VF_MONO_SENSOR)
|
||
|
of_property_read_string(node, "xlnx,cfa-pattern", &pattern);
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(xvip_video_formats); ++i) {
|
||
|
const struct xvip_video_format *format = &xvip_video_formats[i];
|
||
|
|
||
|
if (format->vf_code != vf_code || format->width != width)
|
||
|
continue;
|
||
|
|
||
|
if (vf_code == XVIP_VF_MONO_SENSOR &&
|
||
|
strcmp(pattern, format->pattern))
|
||
|
continue;
|
||
|
|
||
|
return format;
|
||
|
}
|
||
|
|
||
|
return ERR_PTR(-EINVAL);
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_of_get_format);
|
||
|
|
||
|
/**
|
||
|
* xvip_set_format_size - Set the media bus frame format size
|
||
|
* @format: V4L2 frame format on media bus
|
||
|
* @fmt: media bus format
|
||
|
*
|
||
|
* Set the media bus frame format size. The width / height from the subdevice
|
||
|
* format are set to the given media bus format. The new format size is stored
|
||
|
* in @format. The width and height are clamped using default min / max values.
|
||
|
*/
|
||
|
void xvip_set_format_size(struct v4l2_mbus_framefmt *format,
|
||
|
const struct v4l2_subdev_format *fmt)
|
||
|
{
|
||
|
format->width = clamp_t(unsigned int, fmt->format.width,
|
||
|
XVIP_MIN_WIDTH, XVIP_MAX_WIDTH);
|
||
|
format->height = clamp_t(unsigned int, fmt->format.height,
|
||
|
XVIP_MIN_HEIGHT, XVIP_MAX_HEIGHT);
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_set_format_size);
|
||
|
|
||
|
/**
|
||
|
* xvip_clr_or_set - Clear or set the register with a bitmask
|
||
|
* @xvip: Xilinx Video IP device
|
||
|
* @addr: address of register
|
||
|
* @mask: bitmask to be set or cleared
|
||
|
* @set: boolean flag indicating whether to set or clear
|
||
|
*
|
||
|
* Clear or set the register at address @addr with a bitmask @mask depending on
|
||
|
* the boolean flag @set. When the flag @set is true, the bitmask is set in
|
||
|
* the register, otherwise the bitmask is cleared from the register
|
||
|
* when the flag @set is false.
|
||
|
*
|
||
|
* Fox eample, this function can be used to set a control with a boolean value
|
||
|
* requested by users. If the caller knows whether to set or clear in the first
|
||
|
* place, the caller should call xvip_clr() or xvip_set() directly instead of
|
||
|
* using this function.
|
||
|
*/
|
||
|
void xvip_clr_or_set(struct xvip_device *xvip, u32 addr, u32 mask, bool set)
|
||
|
{
|
||
|
u32 reg;
|
||
|
|
||
|
reg = xvip_read(xvip, addr);
|
||
|
reg = set ? reg | mask : reg & ~mask;
|
||
|
xvip_write(xvip, addr, reg);
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_clr_or_set);
|
||
|
|
||
|
/**
|
||
|
* xvip_clr_and_set - Clear and set the register with a bitmask
|
||
|
* @xvip: Xilinx Video IP device
|
||
|
* @addr: address of register
|
||
|
* @clr: bitmask to be cleared
|
||
|
* @set: bitmask to be set
|
||
|
*
|
||
|
* Clear a bit(s) of mask @clr in the register at address @addr, then set
|
||
|
* a bit(s) of mask @set in the register after.
|
||
|
*/
|
||
|
void xvip_clr_and_set(struct xvip_device *xvip, u32 addr, u32 clr, u32 set)
|
||
|
{
|
||
|
u32 reg;
|
||
|
|
||
|
reg = xvip_read(xvip, addr);
|
||
|
reg &= ~clr;
|
||
|
reg |= set;
|
||
|
xvip_write(xvip, addr, reg);
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_clr_and_set);
|
||
|
|
||
|
int xvip_init_resources(struct xvip_device *xvip)
|
||
|
{
|
||
|
struct platform_device *pdev = to_platform_device(xvip->dev);
|
||
|
struct resource *res;
|
||
|
|
||
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||
|
xvip->iomem = devm_ioremap_resource(xvip->dev, res);
|
||
|
if (IS_ERR(xvip->iomem))
|
||
|
return PTR_ERR(xvip->iomem);
|
||
|
|
||
|
xvip->clk = devm_clk_get(xvip->dev, NULL);
|
||
|
if (IS_ERR(xvip->clk))
|
||
|
return PTR_ERR(xvip->clk);
|
||
|
|
||
|
clk_prepare_enable(xvip->clk);
|
||
|
return 0;
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_init_resources);
|
||
|
|
||
|
void xvip_cleanup_resources(struct xvip_device *xvip)
|
||
|
{
|
||
|
clk_disable_unprepare(xvip->clk);
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_cleanup_resources);
|
||
|
|
||
|
/* -----------------------------------------------------------------------------
|
||
|
* Subdev operations handlers
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* xvip_enum_mbus_code - Enumerate the media format code
|
||
|
* @subdev: V4L2 subdevice
|
||
|
* @cfg: V4L2 subdev pad configuration
|
||
|
* @code: returning media bus code
|
||
|
*
|
||
|
* Enumerate the media bus code of the subdevice. Return the corresponding
|
||
|
* pad format code. This function only works for subdevices with fixed format
|
||
|
* on all pads. Subdevices with multiple format should have their own
|
||
|
* function to enumerate mbus codes.
|
||
|
*
|
||
|
* Return: 0 if the media bus code is found, or -EINVAL if the format index
|
||
|
* is not valid.
|
||
|
*/
|
||
|
int xvip_enum_mbus_code(struct v4l2_subdev *subdev,
|
||
|
struct v4l2_subdev_pad_config *cfg,
|
||
|
struct v4l2_subdev_mbus_code_enum *code)
|
||
|
{
|
||
|
struct v4l2_mbus_framefmt *format;
|
||
|
|
||
|
/* Enumerating frame sizes based on the active configuration isn't
|
||
|
* supported yet.
|
||
|
*/
|
||
|
if (code->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (code->index)
|
||
|
return -EINVAL;
|
||
|
|
||
|
format = v4l2_subdev_get_try_format(subdev, cfg, code->pad);
|
||
|
|
||
|
code->code = format->code;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_enum_mbus_code);
|
||
|
|
||
|
/**
|
||
|
* xvip_enum_frame_size - Enumerate the media bus frame size
|
||
|
* @subdev: V4L2 subdevice
|
||
|
* @cfg: V4L2 subdev pad configuration
|
||
|
* @fse: returning media bus frame size
|
||
|
*
|
||
|
* This function is a drop-in implementation of the subdev enum_frame_size pad
|
||
|
* operation. It assumes that the subdevice has one sink pad and one source
|
||
|
* pad, and that the format on the source pad is always identical to the
|
||
|
* format on the sink pad. Entities with different requirements need to
|
||
|
* implement their own enum_frame_size handlers.
|
||
|
*
|
||
|
* Return: 0 if the media bus frame size is found, or -EINVAL
|
||
|
* if the index or the code is not valid.
|
||
|
*/
|
||
|
int xvip_enum_frame_size(struct v4l2_subdev *subdev,
|
||
|
struct v4l2_subdev_pad_config *cfg,
|
||
|
struct v4l2_subdev_frame_size_enum *fse)
|
||
|
{
|
||
|
struct v4l2_mbus_framefmt *format;
|
||
|
|
||
|
/* Enumerating frame sizes based on the active configuration isn't
|
||
|
* supported yet.
|
||
|
*/
|
||
|
if (fse->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
||
|
return -EINVAL;
|
||
|
|
||
|
format = v4l2_subdev_get_try_format(subdev, cfg, fse->pad);
|
||
|
|
||
|
if (fse->index || fse->code != format->code)
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (fse->pad == XVIP_PAD_SINK) {
|
||
|
fse->min_width = XVIP_MIN_WIDTH;
|
||
|
fse->max_width = XVIP_MAX_WIDTH;
|
||
|
fse->min_height = XVIP_MIN_HEIGHT;
|
||
|
fse->max_height = XVIP_MAX_HEIGHT;
|
||
|
} else {
|
||
|
/* The size on the source pad is fixed and always identical to
|
||
|
* the size on the sink pad.
|
||
|
*/
|
||
|
fse->min_width = format->width;
|
||
|
fse->max_width = format->width;
|
||
|
fse->min_height = format->height;
|
||
|
fse->max_height = format->height;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
EXPORT_SYMBOL_GPL(xvip_enum_frame_size);
|