diff options
Diffstat (limited to 'drivers/media/platform/mediatek/mtk-jpeg/mtk_jpeg_core.h')
| -rw-r--r-- | drivers/media/platform/mediatek/mtk-jpeg/mtk_jpeg_core.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/media/platform/mediatek/mtk-jpeg/mtk_jpeg_core.h b/drivers/media/platform/mediatek/mtk-jpeg/mtk_jpeg_core.h new file mode 100644 index 000000000000..3e4811a41ba2 --- /dev/null +++ b/drivers/media/platform/mediatek/mtk-jpeg/mtk_jpeg_core.h @@ -0,0 +1,163 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2016 MediaTek Inc. + * Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com> + * Rick Chang <rick.chang@mediatek.com> + * Xia Jiang <xia.jiang@mediatek.com> + */ + +#ifndef _MTK_JPEG_CORE_H +#define _MTK_JPEG_CORE_H + +#include <linux/interrupt.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-fh.h> + +#define MTK_JPEG_NAME "mtk-jpeg" + +#define MTK_JPEG_COMP_MAX 3 + +#define MTK_JPEG_FMT_FLAG_OUTPUT BIT(0) +#define MTK_JPEG_FMT_FLAG_CAPTURE BIT(1) + +#define MTK_JPEG_MIN_WIDTH 32U +#define MTK_JPEG_MIN_HEIGHT 32U +#define MTK_JPEG_MAX_WIDTH 65535U +#define MTK_JPEG_MAX_HEIGHT 65535U + +#define MTK_JPEG_DEFAULT_SIZEIMAGE (1 * 1024 * 1024) + +#define MTK_JPEG_HW_TIMEOUT_MSEC 1000 + +#define MTK_JPEG_MAX_EXIF_SIZE (64 * 1024) + +/** + * enum mtk_jpeg_ctx_state - states of the context state machine + * @MTK_JPEG_INIT: current state is initialized + * @MTK_JPEG_RUNNING: current state is running + * @MTK_JPEG_SOURCE_CHANGE: current state is source resolution change + */ +enum mtk_jpeg_ctx_state { + MTK_JPEG_INIT = 0, + MTK_JPEG_RUNNING, + MTK_JPEG_SOURCE_CHANGE, +}; + +/** + * struct mtk_jpeg_variant - mtk jpeg driver variant + * @clks: clock names + * @num_clks: numbers of clock + * @formats: jpeg driver's internal color format + * @num_formats: number of formats + * @qops: the callback of jpeg vb2_ops + * @irq_handler: jpeg irq handler callback + * @hw_reset: jpeg hardware reset callback + * @m2m_ops: the callback of jpeg v4l2_m2m_ops + * @dev_name: jpeg device name + * @ioctl_ops: the callback of jpeg v4l2_ioctl_ops + * @out_q_default_fourcc: output queue default fourcc + * @cap_q_default_fourcc: capture queue default fourcc + */ +struct mtk_jpeg_variant { + struct clk_bulk_data *clks; + int num_clks; + struct mtk_jpeg_fmt *formats; + int num_formats; + const struct vb2_ops *qops; + irqreturn_t (*irq_handler)(int irq, void *priv); + void (*hw_reset)(void __iomem *base); + const struct v4l2_m2m_ops *m2m_ops; + const char *dev_name; + const struct v4l2_ioctl_ops *ioctl_ops; + u32 out_q_default_fourcc; + u32 cap_q_default_fourcc; +}; + +/** + * struct mtk_jpeg_dev - JPEG IP abstraction + * @lock: the mutex protecting this structure + * @hw_lock: spinlock protecting the hw device resource + * @workqueue: decode work queue + * @dev: JPEG device + * @v4l2_dev: v4l2 device for mem2mem mode + * @m2m_dev: v4l2 mem2mem device data + * @alloc_ctx: videobuf2 memory allocator's context + * @vdev: video device node for jpeg mem2mem mode + * @reg_base: JPEG registers mapping + * @job_timeout_work: IRQ timeout structure + * @variant: driver variant to be used + */ +struct mtk_jpeg_dev { + struct mutex lock; + spinlock_t hw_lock; + struct workqueue_struct *workqueue; + struct device *dev; + struct v4l2_device v4l2_dev; + struct v4l2_m2m_dev *m2m_dev; + void *alloc_ctx; + struct video_device *vdev; + void __iomem *reg_base; + struct delayed_work job_timeout_work; + const struct mtk_jpeg_variant *variant; +}; + +/** + * struct mtk_jpeg_fmt - driver's internal color format data + * @fourcc: the fourcc code, 0 if not applicable + * @hw_format: hardware format value + * @h_sample: horizontal sample count of plane in 4 * 4 pixel image + * @v_sample: vertical sample count of plane in 4 * 4 pixel image + * @colplanes: number of color planes (1 for packed formats) + * @h_align: horizontal alignment order (align to 2^h_align) + * @v_align: vertical alignment order (align to 2^v_align) + * @flags: flags describing format applicability + */ +struct mtk_jpeg_fmt { + u32 fourcc; + u32 hw_format; + int h_sample[VIDEO_MAX_PLANES]; + int v_sample[VIDEO_MAX_PLANES]; + int colplanes; + int h_align; + int v_align; + u32 flags; +}; + +/** + * struct mtk_jpeg_q_data - parameters of one queue + * @fmt: driver-specific format of this queue + * @pix_mp: multiplanar format + * @enc_crop_rect: jpeg encoder crop information + */ +struct mtk_jpeg_q_data { + struct mtk_jpeg_fmt *fmt; + struct v4l2_pix_format_mplane pix_mp; + struct v4l2_rect enc_crop_rect; +}; + +/** + * struct mtk_jpeg_ctx - the device context data + * @jpeg: JPEG IP device for this context + * @out_q: source (output) queue information + * @cap_q: destination (capture) queue queue information + * @fh: V4L2 file handle + * @state: state of the context + * @enable_exif: enable exif mode of jpeg encoder + * @enc_quality: jpeg encoder quality + * @restart_interval: jpeg encoder restart interval + * @ctrl_hdl: controls handler + */ +struct mtk_jpeg_ctx { + struct mtk_jpeg_dev *jpeg; + struct mtk_jpeg_q_data out_q; + struct mtk_jpeg_q_data cap_q; + struct v4l2_fh fh; + enum mtk_jpeg_ctx_state state; + bool enable_exif; + u8 enc_quality; + u8 restart_interval; + struct v4l2_ctrl_handler ctrl_hdl; +}; + +#endif /* _MTK_JPEG_CORE_H */ |