167 lines
3.9 KiB
C
167 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
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* All rights reserved.
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* Author: Yong Deng <yong.deng@magewell.com>
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*/
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#ifndef __SUN6I_CSI_H__
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#define __SUN6I_CSI_H__
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#include <media/v4l2-device.h>
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#include <media/v4l2-fwnode.h>
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#include <media/videobuf2-v4l2.h>
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#include "sun6i_video.h"
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#define SUN6I_CSI_NAME "sun6i-csi"
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#define SUN6I_CSI_DESCRIPTION "Allwinner A31 CSI Device"
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struct sun6i_csi_buffer {
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struct vb2_v4l2_buffer v4l2_buffer;
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struct list_head list;
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dma_addr_t dma_addr;
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bool queued_to_csi;
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};
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/**
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* struct sun6i_csi_config - configs for sun6i csi
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* @pixelformat: v4l2 pixel format (V4L2_PIX_FMT_*)
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* @code: media bus format code (MEDIA_BUS_FMT_*)
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* @field: used interlacing type (enum v4l2_field)
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* @width: frame width
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* @height: frame height
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*/
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struct sun6i_csi_config {
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u32 pixelformat;
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u32 code;
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u32 field;
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u32 width;
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u32 height;
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};
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struct sun6i_csi_v4l2 {
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struct v4l2_device v4l2_dev;
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struct media_device media_dev;
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struct v4l2_async_notifier notifier;
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/* video port settings */
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struct v4l2_fwnode_endpoint v4l2_ep;
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};
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struct sun6i_csi_device {
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struct device *dev;
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struct sun6i_csi_config config;
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struct sun6i_csi_v4l2 v4l2;
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struct sun6i_video video;
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struct regmap *regmap;
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struct clk *clock_mod;
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struct clk *clock_ram;
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struct reset_control *reset;
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int planar_offset[3];
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};
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struct sun6i_csi_variant {
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unsigned long clock_mod_rate;
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};
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/**
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* sun6i_csi_is_format_supported() - check if the format supported by csi
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* @csi_dev: pointer to the csi device
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* @pixformat: v4l2 pixel format (V4L2_PIX_FMT_*)
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* @mbus_code: media bus format code (MEDIA_BUS_FMT_*)
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*
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* Return: true if format is supported, false otherwise.
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*/
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bool sun6i_csi_is_format_supported(struct sun6i_csi_device *csi_dev,
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u32 pixformat, u32 mbus_code);
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/**
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* sun6i_csi_set_power() - power on/off the csi
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* @csi_dev: pointer to the csi device
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* @enable: on/off
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*
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* Return: 0 if successful, error code otherwise.
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*/
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int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable);
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/**
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* sun6i_csi_update_config() - update the csi register settings
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* @csi_dev: pointer to the csi device
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* @config: see struct sun6i_csi_config
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*
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* Return: 0 if successful, error code otherwise.
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*/
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int sun6i_csi_update_config(struct sun6i_csi_device *csi_dev,
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struct sun6i_csi_config *config);
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/**
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* sun6i_csi_update_buf_addr() - update the csi frame buffer address
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* @csi_dev: pointer to the csi device
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* @addr: frame buffer's physical address
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*/
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void sun6i_csi_update_buf_addr(struct sun6i_csi_device *csi_dev,
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dma_addr_t addr);
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/**
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* sun6i_csi_set_stream() - start/stop csi streaming
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* @csi_dev: pointer to the csi device
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* @enable: start/stop
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*/
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void sun6i_csi_set_stream(struct sun6i_csi_device *csi_dev, bool enable);
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/* get bpp form v4l2 pixformat */
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static inline int sun6i_csi_get_bpp(unsigned int pixformat)
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{
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switch (pixformat) {
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case V4L2_PIX_FMT_SBGGR8:
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case V4L2_PIX_FMT_SGBRG8:
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case V4L2_PIX_FMT_SGRBG8:
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case V4L2_PIX_FMT_SRGGB8:
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case V4L2_PIX_FMT_JPEG:
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return 8;
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case V4L2_PIX_FMT_SBGGR10:
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case V4L2_PIX_FMT_SGBRG10:
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case V4L2_PIX_FMT_SGRBG10:
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case V4L2_PIX_FMT_SRGGB10:
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return 10;
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case V4L2_PIX_FMT_SBGGR12:
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case V4L2_PIX_FMT_SGBRG12:
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case V4L2_PIX_FMT_SGRBG12:
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case V4L2_PIX_FMT_SRGGB12:
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case V4L2_PIX_FMT_NV12_16L16:
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case V4L2_PIX_FMT_NV12:
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case V4L2_PIX_FMT_NV21:
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case V4L2_PIX_FMT_YUV420:
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case V4L2_PIX_FMT_YVU420:
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return 12;
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case V4L2_PIX_FMT_YUYV:
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case V4L2_PIX_FMT_YVYU:
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case V4L2_PIX_FMT_UYVY:
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case V4L2_PIX_FMT_VYUY:
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case V4L2_PIX_FMT_NV16:
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case V4L2_PIX_FMT_NV61:
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case V4L2_PIX_FMT_YUV422P:
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case V4L2_PIX_FMT_RGB565:
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case V4L2_PIX_FMT_RGB565X:
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return 16;
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case V4L2_PIX_FMT_RGB24:
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case V4L2_PIX_FMT_BGR24:
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return 24;
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case V4L2_PIX_FMT_RGB32:
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case V4L2_PIX_FMT_BGR32:
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return 32;
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default:
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WARN(1, "Unsupported pixformat: 0x%x\n", pixformat);
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break;
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}
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return 0;
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}
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#endif /* __SUN6I_CSI_H__ */
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