// SPDX-License-Identifier: GPL-2.0-only /* linux/drivers/media/platform/samsung/s5p-jpeg/jpeg-core.c * * Copyright (c) 2011-2014 Samsung Electronics Co., Ltd. * http://www.samsung.com * * Author: Andrzej Pietrasiewicz <[email protected]> * Author: Jacek Anaszewski <[email protected]> */ #include <linux/clk.h> #include <linux/err.h> #include <linux/gfp.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/string.h> #include <media/v4l2-event.h> #include <media/v4l2-mem2mem.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-rect.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-dma-contig.h> #include "jpeg-core.h" #include "jpeg-hw-s5p.h" #include "jpeg-hw-exynos4.h" #include "jpeg-hw-exynos3250.h" #include "jpeg-regs.h" static struct s5p_jpeg_fmt sjpeg_formats[] = …; #define SJPEG_NUM_FORMATS … static const unsigned char qtbl_luminance[4][64] = …; static const unsigned char qtbl_chrominance[4][64] = …; static const unsigned char hdctbl0[16] = …; static const unsigned char hdctblg0[12] = …; static const unsigned char hactbl0[16] = …; static const unsigned char hactblg0[162] = …; /* * Fourcc downgrade schema lookup tables for 422 and 420 * chroma subsampling - fourcc on each position maps on the * fourcc from the table fourcc_to_dwngrd_schema_id which allows * to get the most suitable fourcc counterpart for the given * downgraded subsampling property. */ static const u32 subs422_fourcc_dwngrd_schema[] = …; static const u32 subs420_fourcc_dwngrd_schema[] = …; /* * Lookup table for translation of a fourcc to the position * of its downgraded counterpart in the *fourcc_dwngrd_schema * tables. */ static const u32 fourcc_to_dwngrd_schema_id[] = …; static int s5p_jpeg_get_dwngrd_sch_id_by_fourcc(u32 fourcc) { … } static int s5p_jpeg_adjust_fourcc_to_subsampling( enum v4l2_jpeg_chroma_subsampling subs, u32 in_fourcc, u32 *out_fourcc, struct s5p_jpeg_ctx *ctx) { … } static int exynos4x12_decoded_subsampling[] = …; static int exynos3250_decoded_subsampling[] = …; static inline struct s5p_jpeg_ctx *ctrl_to_ctx(struct v4l2_ctrl *c) { … } static inline struct s5p_jpeg_ctx *fh_to_ctx(struct v4l2_fh *fh) { … } static int s5p_jpeg_to_user_subsampling(struct s5p_jpeg_ctx *ctx) { … } static inline void s5p_jpeg_set_qtbl(void __iomem *regs, const unsigned char *qtbl, unsigned long tab, int len) { … } static inline void s5p_jpeg_set_qtbl_lum(void __iomem *regs, int quality) { … } static inline void s5p_jpeg_set_qtbl_chr(void __iomem *regs, int quality) { … } static inline void s5p_jpeg_set_htbl(void __iomem *regs, const unsigned char *htbl, unsigned long tab, int len) { … } static inline void s5p_jpeg_set_hdctbl(void __iomem *regs) { … } static inline void s5p_jpeg_set_hdctblg(void __iomem *regs) { … } static inline void s5p_jpeg_set_hactbl(void __iomem *regs) { … } static inline void s5p_jpeg_set_hactblg(void __iomem *regs) { … } static inline void exynos4_jpeg_set_tbl(void __iomem *regs, const unsigned char *tbl, unsigned long tab, int len) { … } static inline void exynos4_jpeg_set_qtbl_lum(void __iomem *regs, int quality) { … } static inline void exynos4_jpeg_set_qtbl_chr(void __iomem *regs, int quality) { … } static void exynos4_jpeg_set_huff_tbl(void __iomem *base) { … } static inline int __exynos4_huff_tbl(int class, int id, bool lenval) { … } static inline int exynos4_huff_tbl_len(int class, int id) { … } static inline int exynos4_huff_tbl_val(int class, int id) { … } static int get_byte(struct s5p_jpeg_buffer *buf); static int get_word_be(struct s5p_jpeg_buffer *buf, unsigned int *word); static void skip(struct s5p_jpeg_buffer *buf, long len); static void exynos4_jpeg_parse_decode_h_tbl(struct s5p_jpeg_ctx *ctx) { … } static void exynos4_jpeg_parse_huff_tbl(struct s5p_jpeg_ctx *ctx) { … } static void exynos4_jpeg_parse_decode_q_tbl(struct s5p_jpeg_ctx *ctx) { … } static void exynos4_jpeg_parse_q_tbl(struct s5p_jpeg_ctx *ctx) { … } /* * ============================================================================ * Device file operations * ============================================================================ */ static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq); static struct s5p_jpeg_fmt *s5p_jpeg_find_format(struct s5p_jpeg_ctx *ctx, __u32 pixelformat, unsigned int fmt_type); static int s5p_jpeg_controls_create(struct s5p_jpeg_ctx *ctx); static int s5p_jpeg_open(struct file *file) { … } static int s5p_jpeg_release(struct file *file) { … } static const struct v4l2_file_operations s5p_jpeg_fops = …; /* * ============================================================================ * video ioctl operations * ============================================================================ */ static int get_byte(struct s5p_jpeg_buffer *buf) { … } static int get_word_be(struct s5p_jpeg_buffer *buf, unsigned int *word) { … } static void skip(struct s5p_jpeg_buffer *buf, long len) { … } static bool s5p_jpeg_subsampling_decode(struct s5p_jpeg_ctx *ctx, unsigned int subsampling) { … } static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, unsigned long buffer, unsigned long size, struct s5p_jpeg_ctx *ctx) { … } static int s5p_jpeg_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { … } static int enum_fmt(struct s5p_jpeg_ctx *ctx, struct s5p_jpeg_fmt *sjpeg_formats, int n, struct v4l2_fmtdesc *f, u32 type) { … } static int s5p_jpeg_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } static int s5p_jpeg_enum_fmt_vid_out(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } static struct s5p_jpeg_q_data *get_q_data(struct s5p_jpeg_ctx *ctx, enum v4l2_buf_type type) { … } static int s5p_jpeg_g_fmt(struct file *file, void *priv, struct v4l2_format *f) { … } static struct s5p_jpeg_fmt *s5p_jpeg_find_format(struct s5p_jpeg_ctx *ctx, u32 pixelformat, unsigned int fmt_type) { … } static void jpeg_bound_align_image(struct s5p_jpeg_ctx *ctx, u32 *w, unsigned int wmin, unsigned int wmax, unsigned int walign, u32 *h, unsigned int hmin, unsigned int hmax, unsigned int halign) { … } static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt, struct s5p_jpeg_ctx *ctx, int q_type) { … } static int s5p_jpeg_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int s5p_jpeg_try_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { … } static int exynos4_jpeg_get_output_buffer_size(struct s5p_jpeg_ctx *ctx, struct v4l2_format *f, int fmt_depth) { … } static int exynos3250_jpeg_try_downscale(struct s5p_jpeg_ctx *ctx, struct v4l2_rect *r); static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) { … } static int s5p_jpeg_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int s5p_jpeg_s_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { … } static int s5p_jpeg_subscribe_event(struct v4l2_fh *fh, const struct v4l2_event_subscription *sub) { … } static int exynos3250_jpeg_try_downscale(struct s5p_jpeg_ctx *ctx, struct v4l2_rect *r) { … } static int exynos3250_jpeg_try_crop(struct s5p_jpeg_ctx *ctx, struct v4l2_rect *r) { … } /* * V4L2 controls */ static int s5p_jpeg_g_selection(struct file *file, void *priv, struct v4l2_selection *s) { … } /* * V4L2 controls */ static int s5p_jpeg_s_selection(struct file *file, void *fh, struct v4l2_selection *s) { … } static int s5p_jpeg_g_volatile_ctrl(struct v4l2_ctrl *ctrl) { … } static int s5p_jpeg_adjust_subs_ctrl(struct s5p_jpeg_ctx *ctx, int *ctrl_val) { … } static int s5p_jpeg_try_ctrl(struct v4l2_ctrl *ctrl) { … } static int s5p_jpeg_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops s5p_jpeg_ctrl_ops = …; static int s5p_jpeg_controls_create(struct s5p_jpeg_ctx *ctx) { … } static const struct v4l2_ioctl_ops s5p_jpeg_ioctl_ops = …; /* * ============================================================================ * mem2mem callbacks * ============================================================================ */ static void s5p_jpeg_device_run(void *priv) { … } static void exynos4_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx) { … } static void exynos4_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx) { … } static inline void exynos4_jpeg_set_img_fmt(void __iomem *base, unsigned int img_fmt) { … } static inline void exynos5433_jpeg_set_img_fmt(void __iomem *base, unsigned int img_fmt) { … } static inline void exynos4_jpeg_set_enc_out_fmt(void __iomem *base, unsigned int out_fmt) { … } static inline void exynos5433_jpeg_set_enc_out_fmt(void __iomem *base, unsigned int out_fmt) { … } static void exynos4_jpeg_device_run(void *priv) { … } static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx) { … } static void exynos3250_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx) { … } static void exynos3250_jpeg_device_run(void *priv) { … } static int s5p_jpeg_job_ready(void *priv) { … } static const struct v4l2_m2m_ops s5p_jpeg_m2m_ops = …; static const struct v4l2_m2m_ops exynos3250_jpeg_m2m_ops = …; static const struct v4l2_m2m_ops exynos4_jpeg_m2m_ops = …; /* * ============================================================================ * Queue operations * ============================================================================ */ static int s5p_jpeg_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { … } static int s5p_jpeg_buf_prepare(struct vb2_buffer *vb) { … } static void s5p_jpeg_set_capture_queue_data(struct s5p_jpeg_ctx *ctx) { … } static void s5p_jpeg_buf_queue(struct vb2_buffer *vb) { … } static int s5p_jpeg_start_streaming(struct vb2_queue *q, unsigned int count) { … } static void s5p_jpeg_stop_streaming(struct vb2_queue *q) { … } static const struct vb2_ops s5p_jpeg_qops = …; static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) { … } /* * ============================================================================ * ISR * ============================================================================ */ static irqreturn_t s5p_jpeg_irq(int irq, void *dev_id) { … } static irqreturn_t exynos4_jpeg_irq(int irq, void *priv) { … } static irqreturn_t exynos3250_jpeg_irq(int irq, void *dev_id) { … } static void *jpeg_get_drv_data(struct device *dev); /* * ============================================================================ * Driver basic infrastructure * ============================================================================ */ static int s5p_jpeg_probe(struct platform_device *pdev) { … } static void s5p_jpeg_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM static int s5p_jpeg_runtime_suspend(struct device *dev) { … } static int s5p_jpeg_runtime_resume(struct device *dev) { … } #endif /* CONFIG_PM */ static const struct dev_pm_ops s5p_jpeg_pm_ops = …; static struct s5p_jpeg_variant s5p_jpeg_drvdata = …; static struct s5p_jpeg_variant exynos3250_jpeg_drvdata = …; static struct s5p_jpeg_variant exynos4_jpeg_drvdata = …; static struct s5p_jpeg_variant exynos5420_jpeg_drvdata = …; static struct s5p_jpeg_variant exynos5433_jpeg_drvdata = …; static const struct of_device_id samsung_jpeg_match[] = …; MODULE_DEVICE_TABLE(of, samsung_jpeg_match); static void *jpeg_get_drv_data(struct device *dev) { … } static struct platform_driver s5p_jpeg_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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