// SPDX-License-Identifier: GPL-2.0-or-later /* * Support eMMa-PrP through mem2mem framework. * * eMMa-PrP is a piece of HW that allows fetching buffers * from one memory location and do several operations on * them such as scaling or format conversion giving, as a result * a new processed buffer in another memory location. * * Based on mem2mem_testdev.c by Pawel Osciak. * * Copyright (c) 2011 Vista Silicon S.L. * Javier Martin <[email protected]> */ #include <linux/module.h> #include <linux/clk.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/platform_device.h> #include <media/v4l2-mem2mem.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/videobuf2-dma-contig.h> #include <linux/sizes.h> #define EMMAPRP_MODULE_NAME … MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_VERSION(…) …; static bool debug; module_param(debug, bool, 0644); #define MIN_W … #define MIN_H … #define MAX_W … #define MAX_H … #define S_ALIGN … #define W_ALIGN_YUV420 … #define W_ALIGN_OTHERS … #define H_ALIGN … /* Flags that indicate a format can be used for capture/output */ #define MEM2MEM_CAPTURE … #define MEM2MEM_OUTPUT … #define MEM2MEM_NAME … /* In bytes, per queue */ #define MEM2MEM_VID_MEM_LIMIT … #define dprintk(dev, fmt, arg...) … /* EMMA PrP */ #define PRP_CNTL … #define PRP_INTR_CNTL … #define PRP_INTRSTATUS … #define PRP_SOURCE_Y_PTR … #define PRP_SOURCE_CB_PTR … #define PRP_SOURCE_CR_PTR … #define PRP_DEST_RGB1_PTR … #define PRP_DEST_RGB2_PTR … #define PRP_DEST_Y_PTR … #define PRP_DEST_CB_PTR … #define PRP_DEST_CR_PTR … #define PRP_SRC_FRAME_SIZE … #define PRP_DEST_CH1_LINE_STRIDE … #define PRP_SRC_PIXEL_FORMAT_CNTL … #define PRP_CH1_PIXEL_FORMAT_CNTL … #define PRP_CH1_OUT_IMAGE_SIZE … #define PRP_CH2_OUT_IMAGE_SIZE … #define PRP_SRC_LINE_STRIDE … #define PRP_CSC_COEF_012 … #define PRP_CSC_COEF_345 … #define PRP_CSC_COEF_678 … #define PRP_CH1_RZ_HORI_COEF1 … #define PRP_CH1_RZ_HORI_COEF2 … #define PRP_CH1_RZ_HORI_VALID … #define PRP_CH1_RZ_VERT_COEF1 … #define PRP_CH1_RZ_VERT_COEF2 … #define PRP_CH1_RZ_VERT_VALID … #define PRP_CH2_RZ_HORI_COEF1 … #define PRP_CH2_RZ_HORI_COEF2 … #define PRP_CH2_RZ_HORI_VALID … #define PRP_CH2_RZ_VERT_COEF1 … #define PRP_CH2_RZ_VERT_COEF2 … #define PRP_CH2_RZ_VERT_VALID … #define PRP_CNTL_CH1EN … #define PRP_CNTL_CH2EN … #define PRP_CNTL_CSIEN … #define PRP_CNTL_DATA_IN_YUV420 … #define PRP_CNTL_DATA_IN_YUV422 … #define PRP_CNTL_DATA_IN_RGB16 … #define PRP_CNTL_DATA_IN_RGB32 … #define PRP_CNTL_CH1_OUT_RGB8 … #define PRP_CNTL_CH1_OUT_RGB16 … #define PRP_CNTL_CH1_OUT_RGB32 … #define PRP_CNTL_CH1_OUT_YUV422 … #define PRP_CNTL_CH2_OUT_YUV420 … #define PRP_CNTL_CH2_OUT_YUV422 … #define PRP_CNTL_CH2_OUT_YUV444 … #define PRP_CNTL_CH1_LEN … #define PRP_CNTL_CH2_LEN … #define PRP_CNTL_SKIP_FRAME … #define PRP_CNTL_SWRST … #define PRP_CNTL_CLKEN … #define PRP_CNTL_WEN … #define PRP_CNTL_CH1BYP … #define PRP_CNTL_IN_TSKIP(x) … #define PRP_CNTL_CH1_TSKIP(x) … #define PRP_CNTL_CH2_TSKIP(x) … #define PRP_CNTL_INPUT_FIFO_LEVEL(x) … #define PRP_CNTL_RZ_FIFO_LEVEL(x) … #define PRP_CNTL_CH2B1EN … #define PRP_CNTL_CH2B2EN … #define PRP_CNTL_CH2FEN … #define PRP_SIZE_HEIGHT(x) … #define PRP_SIZE_WIDTH(x) … /* IRQ Enable and status register */ #define PRP_INTR_RDERR … #define PRP_INTR_CH1WERR … #define PRP_INTR_CH2WERR … #define PRP_INTR_CH1FC … #define PRP_INTR_CH2FC … #define PRP_INTR_LBOVF … #define PRP_INTR_CH2OVF … #define PRP_INTR_ST_RDERR … #define PRP_INTR_ST_CH1WERR … #define PRP_INTR_ST_CH2WERR … #define PRP_INTR_ST_CH2B2CI … #define PRP_INTR_ST_CH2B1CI … #define PRP_INTR_ST_CH1B2CI … #define PRP_INTR_ST_CH1B1CI … #define PRP_INTR_ST_LBOVF … #define PRP_INTR_ST_CH2OVF … struct emmaprp_fmt { … }; static struct emmaprp_fmt formats[] = …; /* Per-queue, driver-specific private data */ struct emmaprp_q_data { … }; enum { … }; #define NUM_FORMATS … static struct emmaprp_fmt *find_format(struct v4l2_format *f) { … } struct emmaprp_dev { … }; struct emmaprp_ctx { … }; static struct emmaprp_q_data *get_q_data(struct emmaprp_ctx *ctx, enum v4l2_buf_type type) { … } /* * mem2mem callbacks */ static void emmaprp_job_abort(void *priv) { … } static inline void emmaprp_dump_regs(struct emmaprp_dev *pcdev) { … } static void emmaprp_device_run(void *priv) { … } static irqreturn_t emmaprp_irq(int irq_emma, void *data) { … } /* * video ioctls */ static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { … } static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) { … } static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } static int vidioc_g_fmt(struct emmaprp_ctx *ctx, struct v4l2_format *f) { … } static int vidioc_g_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_try_fmt(struct v4l2_format *f) { … } static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_try_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_s_fmt(struct emmaprp_ctx *ctx, struct v4l2_format *f) { … } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int vidioc_s_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { … } static const struct v4l2_ioctl_ops emmaprp_ioctl_ops = …; /* * Queue operations */ static int emmaprp_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { … } static int emmaprp_buf_prepare(struct vb2_buffer *vb) { … } static void emmaprp_buf_queue(struct vb2_buffer *vb) { … } static const struct vb2_ops emmaprp_qops = …; static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) { … } /* * File operations */ static int emmaprp_open(struct file *file) { … } static int emmaprp_release(struct file *file) { … } static const struct v4l2_file_operations emmaprp_fops = …; static const struct video_device emmaprp_videodev = …; static const struct v4l2_m2m_ops m2m_ops = …; static int emmaprp_probe(struct platform_device *pdev) { … } static void emmaprp_remove(struct platform_device *pdev) { … } static struct platform_driver emmaprp_pdrv = …; module_platform_driver(…) …;
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