// SPDX-License-Identifier: GPL-2.0+ /* * Driver for Renesas RZ/G2L CRU * * Copyright (C) 2022 Renesas Electronics Corp. * * Based on Renesas R-Car VIN * Copyright (C) 2016 Renesas Electronics Corp. * Copyright (C) 2011-2013 Renesas Solutions Corp. * Copyright (C) 2013 Cogent Embedded, Inc., <[email protected]> * Copyright (C) 2008 Magnus Damm */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/pm_runtime.h> #include <media/v4l2-ioctl.h> #include <media/videobuf2-dma-contig.h> #include "rzg2l-cru.h" /* HW CRU Registers Definition */ /* CRU Control Register */ #define CRUnCTRL … #define CRUnCTRL_VINSEL(x) … /* CRU Interrupt Enable Register */ #define CRUnIE … #define CRUnIE_EFE … /* CRU Interrupt Status Register */ #define CRUnINTS … #define CRUnINTS_SFS … /* CRU Reset Register */ #define CRUnRST … #define CRUnRST_VRESETN … /* Memory Bank Base Address (Lower) Register for CRU Image Data */ #define AMnMBxADDRL(x) … /* Memory Bank Base Address (Higher) Register for CRU Image Data */ #define AMnMBxADDRH(x) … /* Memory Bank Enable Register for CRU Image Data */ #define AMnMBVALID … #define AMnMBVALID_MBVALID(x) … /* Memory Bank Status Register for CRU Image Data */ #define AMnMBS … #define AMnMBS_MBSTS … /* AXI Master FIFO Pointer Register for CRU Image Data */ #define AMnFIFOPNTR … #define AMnFIFOPNTR_FIFOWPNTR … #define AMnFIFOPNTR_FIFORPNTR_Y … /* AXI Master Transfer Stop Register for CRU Image Data */ #define AMnAXISTP … #define AMnAXISTP_AXI_STOP … /* AXI Master Transfer Stop Status Register for CRU Image Data */ #define AMnAXISTPACK … #define AMnAXISTPACK_AXI_STOP_ACK … /* CRU Image Processing Enable Register */ #define ICnEN … #define ICnEN_ICEN … /* CRU Image Processing Main Control Register */ #define ICnMC … #define ICnMC_CSCTHR … #define ICnMC_INF_YUV8_422 … #define ICnMC_INF_USER … #define ICnMC_VCSEL(x) … #define ICnMC_INF_MASK … /* CRU Module Status Register */ #define ICnMS … #define ICnMS_IA … /* CRU Data Output Mode Register */ #define ICnDMR … #define ICnDMR_YCMODE_UYVY … #define RZG2L_TIMEOUT_MS … #define RZG2L_RETRIES … #define RZG2L_CRU_DEFAULT_FORMAT … #define RZG2L_CRU_DEFAULT_WIDTH … #define RZG2L_CRU_DEFAULT_HEIGHT … #define RZG2L_CRU_DEFAULT_FIELD … #define RZG2L_CRU_DEFAULT_COLORSPACE … struct rzg2l_cru_buffer { … }; #define to_buf_list(vb2_buffer) … /* ----------------------------------------------------------------------------- * DMA operations */ static void rzg2l_cru_write(struct rzg2l_cru_dev *cru, u32 offset, u32 value) { … } static u32 rzg2l_cru_read(struct rzg2l_cru_dev *cru, u32 offset) { … } /* Need to hold qlock before calling */ static void return_unused_buffers(struct rzg2l_cru_dev *cru, enum vb2_buffer_state state) { … } static int rzg2l_cru_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct rzg2l_cru_dev *cru = vb2_get_drv_priv(vq); /* Make sure the image size is large enough. */ if (*nplanes) return sizes[0] < cru->format.sizeimage ? -EINVAL : 0; *nplanes = 1; sizes[0] = cru->format.sizeimage; return 0; }; static int rzg2l_cru_buffer_prepare(struct vb2_buffer *vb) { … } static void rzg2l_cru_buffer_queue(struct vb2_buffer *vb) { … } static int rzg2l_cru_mc_validate_format(struct rzg2l_cru_dev *cru, struct v4l2_subdev *sd, struct media_pad *pad) { … } static void rzg2l_cru_set_slot_addr(struct rzg2l_cru_dev *cru, int slot, dma_addr_t addr) { … } /* * Moves a buffer from the queue to the HW slot. If no buffer is * available use the scratch buffer. The scratch buffer is never * returned to userspace, its only function is to enable the capture * loop to keep running. */ static void rzg2l_cru_fill_hw_slot(struct rzg2l_cru_dev *cru, int slot) { … } static void rzg2l_cru_initialize_axi(struct rzg2l_cru_dev *cru) { … } static void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru, bool *input_is_yuv, struct v4l2_mbus_framefmt *ip_sd_fmt) { … } static int rzg2l_cru_initialize_image_conv(struct rzg2l_cru_dev *cru, struct v4l2_mbus_framefmt *ip_sd_fmt) { … } void rzg2l_cru_stop_image_processing(struct rzg2l_cru_dev *cru) { … } int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru) { … } static int rzg2l_cru_set_stream(struct rzg2l_cru_dev *cru, int on) { … } static void rzg2l_cru_stop_streaming(struct rzg2l_cru_dev *cru) { … } static irqreturn_t rzg2l_cru_irq(int irq, void *data) { … } static int rzg2l_cru_start_streaming_vq(struct vb2_queue *vq, unsigned int count) { … } static void rzg2l_cru_stop_streaming_vq(struct vb2_queue *vq) { … } static const struct vb2_ops rzg2l_cru_qops = …; void rzg2l_cru_dma_unregister(struct rzg2l_cru_dev *cru) { … } int rzg2l_cru_dma_register(struct rzg2l_cru_dev *cru) { … } /* ----------------------------------------------------------------------------- * V4L2 stuff */ static const struct v4l2_format_info rzg2l_cru_formats[] = …; const struct v4l2_format_info *rzg2l_cru_format_from_pixel(u32 format) { … } static u32 rzg2l_cru_format_bytesperline(struct v4l2_pix_format *pix) { … } static u32 rzg2l_cru_format_sizeimage(struct v4l2_pix_format *pix) { … } static void rzg2l_cru_format_align(struct rzg2l_cru_dev *cru, struct v4l2_pix_format *pix) { … } static void rzg2l_cru_try_format(struct rzg2l_cru_dev *cru, struct v4l2_pix_format *pix) { … } static int rzg2l_cru_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { … } static int rzg2l_cru_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int rzg2l_cru_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int rzg2l_cru_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { … } static int rzg2l_cru_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { … } static const struct v4l2_ioctl_ops rzg2l_cru_ioctl_ops = …; /* ----------------------------------------------------------------------------- * Media controller file operations */ static int rzg2l_cru_open(struct file *file) { … } static int rzg2l_cru_release(struct file *file) { … } static const struct v4l2_file_operations rzg2l_cru_fops = …; static void rzg2l_cru_v4l2_init(struct rzg2l_cru_dev *cru) { … } void rzg2l_cru_video_unregister(struct rzg2l_cru_dev *cru) { … } int rzg2l_cru_video_register(struct rzg2l_cru_dev *cru) { … }
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