| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Philipp Zabel | 8250 | 99.96% | 2 | 66.67% |
| Arnd Bergmann | 3 | 0.04% | 1 | 33.33% |
| Total | 8253 | 3 |
// SPDX-License-Identifier: GPL-2.0+ /* * i.MX Pixel Pipeline (PXP) mem-to-mem scaler/CSC/rotator driver * * Copyright (c) 2018 Pengutronix, Philipp Zabel * * based on vim2m * * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. * Pawel Osciak, <pawel@osciak.com> * Marek Szyprowski, <m.szyprowski@samsung.com> */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/iopoll.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <media/v4l2-mem2mem.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-event.h> #include <media/videobuf2-dma-contig.h> #include "imx-pxp.h" static unsigned int debug; module_param(debug, uint, 0644); MODULE_PARM_DESC(debug, "activates debug info"); #define MIN_W 8 #define MIN_H 8 #define MAX_W 4096 #define MAX_H 4096 #define ALIGN_W 3 /* 8x8 pixel blocks */ #define ALIGN_H 3 /* Flags that indicate a format can be used for capture/output */ #define MEM2MEM_CAPTURE (1 << 0) #define MEM2MEM_OUTPUT (1 << 1) #define MEM2MEM_NAME "pxp" /* Flags that indicate processing mode */ #define MEM2MEM_HFLIP (1 << 0) #define MEM2MEM_VFLIP (1 << 1) #define dprintk(dev, fmt, arg...) \ v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) struct pxp_fmt { u32 fourcc; int depth; /* Types the format can be used for */ u32 types; }; static struct pxp_fmt formats[] = { { .fourcc = V4L2_PIX_FMT_XBGR32, .depth = 32, /* Both capture and output format */ .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_ABGR32, .depth = 32, /* Capture-only format */ .types = MEM2MEM_CAPTURE, }, { .fourcc = V4L2_PIX_FMT_BGR24, .depth = 24, .types = MEM2MEM_CAPTURE, }, { .fourcc = V4L2_PIX_FMT_RGB565, .depth = 16, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_RGB555, .depth = 16, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_RGB444, .depth = 16, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_YUV32, .depth = 32, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_UYVY, .depth = 16, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_YUYV, .depth = 16, /* Output-only format */ .types = MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_VYUY, .depth = 16, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_YVYU, .depth = 16, .types = MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_GREY, .depth = 8, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_Y4, .depth = 4, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_NV16, .depth = 16, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_NV12, .depth = 12, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_NV21, .depth = 12, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_NV61, .depth = 16, .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_YUV422P, .depth = 16, .types = MEM2MEM_OUTPUT, }, { .fourcc = V4L2_PIX_FMT_YUV420, .depth = 12, .types = MEM2MEM_OUTPUT, }, }; #define NUM_FORMATS ARRAY_SIZE(formats) /* Per-queue, driver-specific private data */ struct pxp_q_data { unsigned int width; unsigned int height; unsigned int bytesperline; unsigned int sizeimage; unsigned int sequence; struct pxp_fmt *fmt; enum v4l2_ycbcr_encoding ycbcr_enc; enum v4l2_quantization quant; }; enum { V4L2_M2M_SRC = 0, V4L2_M2M_DST = 1, }; static struct pxp_fmt *find_format(struct v4l2_format *f) { struct pxp_fmt *fmt; unsigned int k; for (k = 0; k < NUM_FORMATS; k++) { fmt = &formats[k]; if (fmt->fourcc == f->fmt.pix.pixelformat) break; } if (k == NUM_FORMATS) return NULL; return &formats[k]; } struct pxp_dev { struct v4l2_device v4l2_dev; struct video_device vfd; struct clk *clk; void __iomem *mmio; atomic_t num_inst; struct mutex dev_mutex; spinlock_t irqlock; struct v4l2_m2m_dev *m2m_dev; }; struct pxp_ctx { struct v4l2_fh fh; struct pxp_dev *dev; struct v4l2_ctrl_handler hdl; /* Abort requested by m2m */ int aborting; /* Processing mode */ int mode; u8 alpha_component; enum v4l2_colorspace colorspace; enum v4l2_xfer_func xfer_func; /* Source and destination queue data */ struct pxp_q_data q_data[2]; }; static inline struct pxp_ctx *file2ctx(struct file *file) { return container_of(file->private_data, struct pxp_ctx, fh); } static struct pxp_q_data *get_q_data(struct pxp_ctx *ctx, enum v4l2_buf_type type) { if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) return &ctx->q_data[V4L2_M2M_SRC]; else return &ctx->q_data[V4L2_M2M_DST]; } static u32 pxp_v4l2_pix_fmt_to_ps_format(u32 v4l2_pix_fmt) { switch (v4l2_pix_fmt) { case V4L2_PIX_FMT_XBGR32: return BV_PXP_PS_CTRL_FORMAT__RGB888; case V4L2_PIX_FMT_RGB555: return BV_PXP_PS_CTRL_FORMAT__RGB555; case V4L2_PIX_FMT_RGB444: return BV_PXP_PS_CTRL_FORMAT__RGB444; case V4L2_PIX_FMT_RGB565: return BV_PXP_PS_CTRL_FORMAT__RGB565; case V4L2_PIX_FMT_YUV32: return BV_PXP_PS_CTRL_FORMAT__YUV1P444; case V4L2_PIX_FMT_UYVY: return BV_PXP_PS_CTRL_FORMAT__UYVY1P422; case V4L2_PIX_FMT_YUYV: return BM_PXP_PS_CTRL_WB_SWAP | BV_PXP_PS_CTRL_FORMAT__UYVY1P422; case V4L2_PIX_FMT_VYUY: return BV_PXP_PS_CTRL_FORMAT__VYUY1P422; case V4L2_PIX_FMT_YVYU: return BM_PXP_PS_CTRL_WB_SWAP | BV_PXP_PS_CTRL_FORMAT__VYUY1P422; case V4L2_PIX_FMT_GREY: return BV_PXP_PS_CTRL_FORMAT__Y8; default: case V4L2_PIX_FMT_Y4: return BV_PXP_PS_CTRL_FORMAT__Y4; case V4L2_PIX_FMT_NV16: return BV_PXP_PS_CTRL_FORMAT__YUV2P422; case V4L2_PIX_FMT_NV12: return BV_PXP_PS_CTRL_FORMAT__YUV2P420; case V4L2_PIX_FMT_NV21: return BV_PXP_PS_CTRL_FORMAT__YVU2P420; case V4L2_PIX_FMT_NV61: return BV_PXP_PS_CTRL_FORMAT__YVU2P422; case V4L2_PIX_FMT_YUV422P: return BV_PXP_PS_CTRL_FORMAT__YUV422; case V4L2_PIX_FMT_YUV420: return BV_PXP_PS_CTRL_FORMAT__YUV420; } } static u32 pxp_v4l2_pix_fmt_to_out_format(u32 v4l2_pix_fmt) { switch (v4l2_pix_fmt) { case V4L2_PIX_FMT_XBGR32: return BV_PXP_OUT_CTRL_FORMAT__RGB888; case V4L2_PIX_FMT_ABGR32: return BV_PXP_OUT_CTRL_FORMAT__ARGB8888; case V4L2_PIX_FMT_BGR24: return BV_PXP_OUT_CTRL_FORMAT__RGB888P; /* Missing V4L2 pixel formats for ARGB1555 and ARGB4444 */ case V4L2_PIX_FMT_RGB555: return BV_PXP_OUT_CTRL_FORMAT__RGB555; case V4L2_PIX_FMT_RGB444: return BV_PXP_OUT_CTRL_FORMAT__RGB444; case V4L2_PIX_FMT_RGB565: return BV_PXP_OUT_CTRL_FORMAT__RGB565; case V4L2_PIX_FMT_YUV32: return BV_PXP_OUT_CTRL_FORMAT__YUV1P444; case V4L2_PIX_FMT_UYVY: return BV_PXP_OUT_CTRL_FORMAT__UYVY1P422; case V4L2_PIX_FMT_VYUY: return BV_PXP_OUT_CTRL_FORMAT__VYUY1P422; case V4L2_PIX_FMT_GREY: return BV_PXP_OUT_CTRL_FORMAT__Y8; default: case V4L2_PIX_FMT_Y4: return BV_PXP_OUT_CTRL_FORMAT__Y4; case V4L2_PIX_FMT_NV16: return BV_PXP_OUT_CTRL_FORMAT__YUV2P422; case V4L2_PIX_FMT_NV12: return BV_PXP_OUT_CTRL_FORMAT__YUV2P420; case V4L2_PIX_FMT_NV61: return BV_PXP_OUT_CTRL_FORMAT__YVU2P422; case V4L2_PIX_FMT_NV21: return BV_PXP_OUT_CTRL_FORMAT__YVU2P420; } } static bool pxp_v4l2_pix_fmt_is_yuv(u32 v4l2_pix_fmt) { switch (v4l2_pix_fmt) { case V4L2_PIX_FMT_YUV32: case V4L2_PIX_FMT_UYVY: case V4L2_PIX_FMT_YUYV: case V4L2_PIX_FMT_VYUY: case V4L2_PIX_FMT_YVYU: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV61: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_YUV420: case V4L2_PIX_FMT_YUV422P: case V4L2_PIX_FMT_GREY: case V4L2_PIX_FMT_Y4: return true; default: return false; } } static void pxp_setup_csc(struct pxp_ctx *ctx) { struct pxp_dev *dev = ctx->dev; enum v4l2_ycbcr_encoding ycbcr_enc; enum v4l2_quantization quantization; if (pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) && !pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_DST].fmt->fourcc)) { /* * CSC1 YUV/YCbCr to RGB conversion is implemented as follows: * * |R| |C0 0 C1| |Y + Yoffset | * |G| = |C0 C3 C2| * |Cb + UVoffset| * |B| |C0 C4 0 | |Cr + UVoffset| * * Results are clamped to 0..255. * * BT.601 limited range: * * |R| |1.1644 0.0000 1.5960| |Y - 16 | * |G| = |1.1644 -0.3917 -0.8129| * |Cb - 128| * |B| |1.1644 2.0172 0.0000| |Cr - 128| */ static const u32 csc1_coef_bt601_lim[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(-16), BF_PXP_CSC1_COEF1_C1(0x198) | /* 1.5938 (-0.23 %) */ BF_PXP_CSC1_COEF1_C4(0x204), /* 2.0156 (-0.16 %) */ BF_PXP_CSC1_COEF2_C2(0x730) | /* -0.8125 (+0.04 %) */ BF_PXP_CSC1_COEF2_C3(0x79c), /* -0.3906 (+0.11 %) */ }; /* * BT.601 full range: * * |R| |1.0000 0.0000 1.4020| |Y + 0 | * |G| = |1.0000 -0.3441 -0.7141| * |Cb - 128| * |B| |1.0000 1.7720 0.0000| |Cr - 128| */ static const u32 csc1_coef_bt601_full[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(0), BF_PXP_CSC1_COEF1_C1(0x166) | /* 1.3984 (-0.36 %) */ BF_PXP_CSC1_COEF1_C4(0x1c5), /* 1.7695 (-0.25 %) */ BF_PXP_CSC1_COEF2_C2(0x74a) | /* -0.7109 (+0.32 %) */ BF_PXP_CSC1_COEF2_C3(0x7a8), /* -0.3438 (+0.04 %) */ }; /* * Rec.709 limited range: * * |R| |1.1644 0.0000 1.7927| |Y - 16 | * |G| = |1.1644 -0.2132 -0.5329| * |Cb - 128| * |B| |1.1644 2.1124 0.0000| |Cr - 128| */ static const u32 csc1_coef_rec709_lim[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(-16), BF_PXP_CSC1_COEF1_C1(0x1ca) | /* 1.7891 (-0.37 %) */ BF_PXP_CSC1_COEF1_C4(0x21c), /* 2.1094 (-0.30 %) */ BF_PXP_CSC1_COEF2_C2(0x778) | /* -0.5312 (+0.16 %) */ BF_PXP_CSC1_COEF2_C3(0x7ca), /* -0.2109 (+0.23 %) */ }; /* * Rec.709 full range: * * |R| |1.0000 0.0000 1.5748| |Y + 0 | * |G| = |1.0000 -0.1873 -0.4681| * |Cb - 128| * |B| |1.0000 1.8556 0.0000| |Cr - 128| */ static const u32 csc1_coef_rec709_full[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(0), BF_PXP_CSC1_COEF1_C1(0x193) | /* 1.5742 (-0.06 %) */ BF_PXP_CSC1_COEF1_C4(0x1db), /* 1.8555 (-0.01 %) */ BF_PXP_CSC1_COEF2_C2(0x789) | /* -0.4648 (+0.33 %) */ BF_PXP_CSC1_COEF2_C3(0x7d1), /* -0.1836 (+0.37 %) */ }; /* * BT.2020 limited range: * * |R| |1.1644 0.0000 1.6787| |Y - 16 | * |G| = |1.1644 -0.1874 -0.6505| * |Cb - 128| * |B| |1.1644 2.1418 0.0000| |Cr - 128| */ static const u32 csc1_coef_bt2020_lim[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(-16), BF_PXP_CSC1_COEF1_C1(0x1ad) | /* 1.6758 (-0.29 %) */ BF_PXP_CSC1_COEF1_C4(0x224), /* 2.1406 (-0.11 %) */ BF_PXP_CSC1_COEF2_C2(0x75a) | /* -0.6484 (+0.20 %) */ BF_PXP_CSC1_COEF2_C3(0x7d1), /* -0.1836 (+0.38 %) */ }; /* * BT.2020 full range: * * |R| |1.0000 0.0000 1.4746| |Y + 0 | * |G| = |1.0000 -0.1646 -0.5714| * |Cb - 128| * |B| |1.0000 1.8814 0.0000| |Cr - 128| */ static const u32 csc1_coef_bt2020_full[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(0), BF_PXP_CSC1_COEF1_C1(0x179) | /* 1.4727 (-0.19 %) */ BF_PXP_CSC1_COEF1_C4(0x1e1), /* 1.8789 (-0.25 %) */ BF_PXP_CSC1_COEF2_C2(0x76e) | /* -0.5703 (+0.11 %) */ BF_PXP_CSC1_COEF2_C3(0x7d6), /* -0.1641 (+0.05 %) */ }; /* * SMPTE 240m limited range: * * |R| |1.1644 0.0000 1.7937| |Y - 16 | * |G| = |1.1644 -0.2565 -0.5427| * |Cb - 128| * |B| |1.1644 2.0798 0.0000| |Cr - 128| */ static const u32 csc1_coef_smpte240m_lim[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x12a) | /* 1.1641 (-0.03 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(-16), BF_PXP_CSC1_COEF1_C1(0x1cb) | /* 1.7930 (-0.07 %) */ BF_PXP_CSC1_COEF1_C4(0x214), /* 2.0781 (-0.17 %) */ BF_PXP_CSC1_COEF2_C2(0x776) | /* -0.5391 (+0.36 %) */ BF_PXP_CSC1_COEF2_C3(0x7bf), /* -0.2539 (+0.26 %) */ }; /* * SMPTE 240m full range: * * |R| |1.0000 0.0000 1.5756| |Y + 0 | * |G| = |1.0000 -0.2253 -0.4767| * |Cb - 128| * |B| |1.0000 1.8270 0.0000| |Cr - 128| */ static const u32 csc1_coef_smpte240m_full[3] = { BM_PXP_CSC1_COEF0_YCBCR_MODE | BF_PXP_CSC1_COEF0_C0(0x100) | /* 1.0000 (+0.00 %) */ BF_PXP_CSC1_COEF0_UV_OFFSET(-128) | BF_PXP_CSC1_COEF0_Y_OFFSET(0), BF_PXP_CSC1_COEF1_C1(0x193) | /* 1.5742 (-0.14 %) */ BF_PXP_CSC1_COEF1_C4(0x1d3), /* 1.8242 (-0.28 %) */ BF_PXP_CSC1_COEF2_C2(0x786) | /* -0.4766 (+0.01 %) */ BF_PXP_CSC1_COEF2_C3(0x7c7), /* -0.2227 (+0.26 %) */ }; const u32 *csc1_coef; ycbcr_enc = ctx->q_data[V4L2_M2M_SRC].ycbcr_enc; quantization = ctx->q_data[V4L2_M2M_SRC].quant; if (ycbcr_enc == V4L2_YCBCR_ENC_601) { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc1_coef = csc1_coef_bt601_full; else csc1_coef = csc1_coef_bt601_lim; } else if (ycbcr_enc == V4L2_YCBCR_ENC_709) { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc1_coef = csc1_coef_rec709_full; else csc1_coef = csc1_coef_rec709_lim; } else if (ycbcr_enc == V4L2_YCBCR_ENC_BT2020) { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc1_coef = csc1_coef_bt2020_full; else csc1_coef = csc1_coef_bt2020_lim; } else { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc1_coef = csc1_coef_smpte240m_full; else csc1_coef = csc1_coef_smpte240m_lim; } writel(csc1_coef[0], dev->mmio + HW_PXP_CSC1_COEF0); writel(csc1_coef[1], dev->mmio + HW_PXP_CSC1_COEF1); writel(csc1_coef[2], dev->mmio + HW_PXP_CSC1_COEF2); } else { writel(BM_PXP_CSC1_COEF0_BYPASS, dev->mmio + HW_PXP_CSC1_COEF0); } if (!pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) && pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_DST].fmt->fourcc)) { /* * CSC2 RGB to YUV/YCbCr conversion is implemented as follows: * * |Y | |A1 A2 A3| |R| |D1| * |Cb| = |B1 B2 B3| * |G| + |D2| * |Cr| |C1 C2 C3| |B| |D3| * * Results are clamped to 0..255. * * BT.601 limited range: * * |Y | | 0.2568 0.5041 0.0979| |R| |16 | * |Cb| = |-0.1482 -0.2910 0.4392| * |G| + |128| * |Cr| | 0.4392 0.4392 -0.3678| |B| |128| */ static const u32 csc2_coef_bt601_lim[6] = { BF_PXP_CSC2_COEF0_A2(0x081) | /* 0.5039 (-0.02 %) */ BF_PXP_CSC2_COEF0_A1(0x041), /* 0.2539 (-0.29 %) */ BF_PXP_CSC2_COEF1_B1(0x7db) | /* -0.1445 (+0.37 %) */ BF_PXP_CSC2_COEF1_A3(0x019), /* 0.0977 (-0.02 %) */ BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF2_B2(0x7b6), /* -0.2891 (+0.20 %) */ BF_PXP_CSC2_COEF3_C2(0x7a2) | /* -0.3672 (+0.06 %) */ BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF4_D1(16) | BF_PXP_CSC2_COEF4_C3(0x7ee), /* -0.0703 (+0.11 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; /* * BT.601 full range: * * |Y | | 0.2990 0.5870 0.1140| |R| |0 | * |Cb| = |-0.1687 -0.3313 0.5000| * |G| + |128| * |Cr| | 0.5000 0.5000 -0.4187| |B| |128| */ static const u32 csc2_coef_bt601_full[6] = { BF_PXP_CSC2_COEF0_A2(0x096) | /* 0.5859 (-0.11 %) */ BF_PXP_CSC2_COEF0_A1(0x04c), /* 0.2969 (-0.21 %) */ BF_PXP_CSC2_COEF1_B1(0x7d5) | /* -0.1680 (+0.07 %) */ BF_PXP_CSC2_COEF1_A3(0x01d), /* 0.1133 (-0.07 %) */ BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF2_B2(0x7ac), /* -0.3281 (+0.32 %) */ BF_PXP_CSC2_COEF3_C2(0x795) | /* -0.4180 (+0.07 %) */ BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF4_D1(0) | BF_PXP_CSC2_COEF4_C3(0x7ec), /* -0.0781 (+0.32 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; /* * Rec.709 limited range: * * |Y | | 0.1826 0.6142 0.0620| |R| |16 | * |Cb| = |-0.1007 -0.3385 0.4392| * |G| + |128| * |Cr| | 0.4392 0.4392 -0.3990| |B| |128| */ static const u32 csc2_coef_rec709_lim[6] = { BF_PXP_CSC2_COEF0_A2(0x09d) | /* 0.6133 (-0.09 %) */ BF_PXP_CSC2_COEF0_A1(0x02e), /* 0.1797 (-0.29 %) */ BF_PXP_CSC2_COEF1_B1(0x7e7) | /* -0.0977 (+0.30 %) */ BF_PXP_CSC2_COEF1_A3(0x00f), /* 0.0586 (-0.34 %) */ BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF2_B2(0x7aa), /* -0.3359 (+0.26 %) */ BF_PXP_CSC2_COEF3_C2(0x79a) | /* -0.3984 (+0.05 %) */ BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF4_D1(16) | BF_PXP_CSC2_COEF4_C3(0x7f6), /* -0.0391 (+0.12 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; /* * Rec.709 full range: * * |Y | | 0.2126 0.7152 0.0722| |R| |0 | * |Cb| = |-0.1146 -0.3854 0.5000| * |G| + |128| * |Cr| | 0.5000 0.5000 -0.4542| |B| |128| */ static const u32 csc2_coef_rec709_full[6] = { BF_PXP_CSC2_COEF0_A2(0x0b7) | /* 0.7148 (-0.04 %) */ BF_PXP_CSC2_COEF0_A1(0x036), /* 0.2109 (-0.17 %) */ BF_PXP_CSC2_COEF1_B1(0x7e3) | /* -0.1133 (+0.13 %) */ BF_PXP_CSC2_COEF1_A3(0x012), /* 0.0703 (-0.19 %) */ BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF2_B2(0x79e), /* -0.3828 (+0.26 %) */ BF_PXP_CSC2_COEF3_C2(0x78c) | /* -0.4531 (+0.11 %) */ BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF4_D1(0) | BF_PXP_CSC2_COEF4_C3(0x7f5), /* -0.0430 (+0.28 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; /* * BT.2020 limited range: * * |Y | | 0.2256 0.5823 0.0509| |R| |16 | * |Cb| = |-0.1226 -0.3166 0.4392| * |G| + |128| * |Cr| | 0.4392 0.4392 -0.4039| |B| |128| */ static const u32 csc2_coef_bt2020_lim[6] = { BF_PXP_CSC2_COEF0_A2(0x095) | /* 0.5820 (-0.03 %) */ BF_PXP_CSC2_COEF0_A1(0x039), /* 0.2227 (-0.30 %) */ BF_PXP_CSC2_COEF1_B1(0x7e1) | /* -0.1211 (+0.15 %) */ BF_PXP_CSC2_COEF1_A3(0x00d), /* 0.0508 (-0.01 %) */ BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF2_B2(0x7af), /* -0.3164 (+0.02 %) */ BF_PXP_CSC2_COEF3_C2(0x799) | /* -0.4023 (+0.16 %) */ BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF4_D1(16) | BF_PXP_CSC2_COEF4_C3(0x7f7), /* -0.0352 (+0.02 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; /* * BT.2020 full range: * * |Y | | 0.2627 0.6780 0.0593| |R| |0 | * |Cb| = |-0.1396 -0.3604 0.5000| * |G| + |128| * |Cr| | 0.5000 0.5000 -0.4598| |B| |128| */ static const u32 csc2_coef_bt2020_full[6] = { BF_PXP_CSC2_COEF0_A2(0x0ad) | /* 0.6758 (-0.22 %) */ BF_PXP_CSC2_COEF0_A1(0x043), /* 0.2617 (-0.10 %) */ BF_PXP_CSC2_COEF1_B1(0x7dd) | /* -0.1367 (+0.29 %) */ BF_PXP_CSC2_COEF1_A3(0x00f), /* 0.0586 (-0.07 %) */ BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF2_B2(0x7a4), /* -0.3594 (+0.10 %) */ BF_PXP_CSC2_COEF3_C2(0x78b) | /* -0.4570 (+0.28 %) */ BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF4_D1(0) | BF_PXP_CSC2_COEF4_C3(0x7f6), /* -0.0391 (+0.11 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; /* * SMPTE 240m limited range: * * |Y | | 0.1821 0.6020 0.0747| |R| |16 | * |Cb| = |-0.1019 -0.3373 0.4392| * |G| + |128| * |Cr| | 0.4392 0.4392 -0.3909| |B| |128| */ static const u32 csc2_coef_smpte240m_lim[6] = { BF_PXP_CSC2_COEF0_A2(0x09a) | /* 0.6016 (-0.05 %) */ BF_PXP_CSC2_COEF0_A1(0x02e), /* 0.1797 (-0.24 %) */ BF_PXP_CSC2_COEF1_B1(0x7e6) | /* -0.1016 (+0.03 %) */ BF_PXP_CSC2_COEF1_A3(0x013), /* 0.0742 (-0.05 %) */ BF_PXP_CSC2_COEF2_B3(0x070) | /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF2_B2(0x7aa), /* -0.3359 (+0.14 %) */ BF_PXP_CSC2_COEF3_C2(0x79c) | /* -0.3906 (+0.03 %) */ BF_PXP_CSC2_COEF3_C1(0x070), /* 0.4375 (-0.17 %) */ BF_PXP_CSC2_COEF4_D1(16) | BF_PXP_CSC2_COEF4_C3(0x7f4), /* -0.0469 (+0.14 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; /* * SMPTE 240m full range: * * |Y | | 0.2120 0.7010 0.0870| |R| |0 | * |Cb| = |-0.1160 -0.3840 0.5000| * |G| + |128| * |Cr| | 0.5000 0.5000 -0.4450| |B| |128| */ static const u32 csc2_coef_smpte240m_full[6] = { BF_PXP_CSC2_COEF0_A2(0x0b3) | /* 0.6992 (-0.18 %) */ BF_PXP_CSC2_COEF0_A1(0x036), /* 0.2109 (-0.11 %) */ BF_PXP_CSC2_COEF1_B1(0x7e3) | /* -0.1133 (+0.27 %) */ BF_PXP_CSC2_COEF1_A3(0x016), /* 0.0859 (-0.11 %) */ BF_PXP_CSC2_COEF2_B3(0x080) | /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF2_B2(0x79e), /* -0.3828 (+0.12 %) */ BF_PXP_CSC2_COEF3_C2(0x78f) | /* -0.4414 (+0.36 %) */ BF_PXP_CSC2_COEF3_C1(0x080), /* 0.5000 (+0.00 %) */ BF_PXP_CSC2_COEF4_D1(0) | BF_PXP_CSC2_COEF4_C3(0x7f2), /* -0.0547 (+0.03 %) */ BF_PXP_CSC2_COEF5_D3(128) | BF_PXP_CSC2_COEF5_D2(128), }; const u32 *csc2_coef; u32 csc2_ctrl; ycbcr_enc = ctx->q_data[V4L2_M2M_DST].ycbcr_enc; quantization = ctx->q_data[V4L2_M2M_DST].quant; if (ycbcr_enc == V4L2_YCBCR_ENC_601) { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc2_coef = csc2_coef_bt601_full; else csc2_coef = csc2_coef_bt601_lim; } else if (ycbcr_enc == V4L2_YCBCR_ENC_709) { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc2_coef = csc2_coef_rec709_full; else csc2_coef = csc2_coef_rec709_lim; } else if (ycbcr_enc == V4L2_YCBCR_ENC_709) { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc2_coef = csc2_coef_bt2020_full; else csc2_coef = csc2_coef_bt2020_lim; } else { if (quantization == V4L2_QUANTIZATION_FULL_RANGE) csc2_coef = csc2_coef_smpte240m_full; else csc2_coef = csc2_coef_smpte240m_lim; } if (quantization == V4L2_QUANTIZATION_FULL_RANGE) { csc2_ctrl = BV_PXP_CSC2_CTRL_CSC_MODE__RGB2YUV << BP_PXP_CSC2_CTRL_CSC_MODE; } else { csc2_ctrl = BV_PXP_CSC2_CTRL_CSC_MODE__RGB2YCbCr << BP_PXP_CSC2_CTRL_CSC_MODE; } writel(csc2_ctrl, dev->mmio + HW_PXP_CSC2_CTRL); writel(csc2_coef[0], dev->mmio + HW_PXP_CSC2_COEF0); writel(csc2_coef[1], dev->mmio + HW_PXP_CSC2_COEF1); writel(csc2_coef[2], dev->mmio + HW_PXP_CSC2_COEF2); writel(csc2_coef[3], dev->mmio + HW_PXP_CSC2_COEF3); writel(csc2_coef[4], dev->mmio + HW_PXP_CSC2_COEF4); writel(csc2_coef[5], dev->mmio + HW_PXP_CSC2_COEF5); } else { writel(BM_PXP_CSC2_CTRL_BYPASS, dev->mmio + HW_PXP_CSC2_CTRL); } } static int pxp_start(struct pxp_ctx *ctx, struct vb2_v4l2_buffer *in_vb, struct vb2_v4l2_buffer *out_vb) { struct pxp_dev *dev = ctx->dev; struct pxp_q_data *q_data; u32 src_width, src_height, src_stride, src_fourcc; u32 dst_width, dst_height, dst_stride, dst_fourcc; dma_addr_t p_in, p_out; u32 ctrl, out_ctrl, out_buf, out_buf2, out_pitch, out_lrc, out_ps_ulc; u32 out_ps_lrc; u32 ps_ctrl, ps_buf, ps_ubuf, ps_vbuf, ps_pitch, ps_scale, ps_offset; u32 as_ulc, as_lrc; u32 y_size; u32 decx, decy, xscale, yscale; q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); src_width = ctx->q_data[V4L2_M2M_SRC].width; dst_width = ctx->q_data[V4L2_M2M_DST].width; src_height = ctx->q_data[V4L2_M2M_SRC].height; dst_height = ctx->q_data[V4L2_M2M_DST].height; src_stride = ctx->q_data[V4L2_M2M_SRC].bytesperline; dst_stride = ctx->q_data[V4L2_M2M_DST].bytesperline; src_fourcc = ctx->q_data[V4L2_M2M_SRC].fmt->fourcc; dst_fourcc = ctx->q_data[V4L2_M2M_DST].fmt->fourcc; p_in = vb2_dma_contig_plane_dma_addr(&in_vb->vb2_buf, 0); p_out = vb2_dma_contig_plane_dma_addr(&out_vb->vb2_buf, 0); if (!p_in || !p_out) { v4l2_err(&dev->v4l2_dev, "Acquiring DMA addresses of buffers failed\n"); return -EFAULT; } out_vb->sequence = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)->sequence++; in_vb->sequence = q_data->sequence++; out_vb->vb2_buf.timestamp = in_vb->vb2_buf.timestamp; if (in_vb->flags & V4L2_BUF_FLAG_TIMECODE) out_vb->timecode = in_vb->timecode; out_vb->field = in_vb->field; out_vb->flags = in_vb->flags & (V4L2_BUF_FLAG_TIMECODE | V4L2_BUF_FLAG_KEYFRAME | V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_BFRAME | V4L2_BUF_FLAG_TSTAMP_SRC_MASK); /* Rotation disabled, 8x8 block size */ ctrl = BF_PXP_CTRL_VFLIP0(!!(ctx->mode & MEM2MEM_VFLIP)) | BF_PXP_CTRL_HFLIP0(!!(ctx->mode & MEM2MEM_HFLIP)); /* Always write alpha value as V4L2_CID_ALPHA_COMPONENT */ out_ctrl = BF_PXP_OUT_CTRL_ALPHA(ctx->alpha_component) | BF_PXP_OUT_CTRL_ALPHA_OUTPUT(1) | pxp_v4l2_pix_fmt_to_out_format(dst_fourcc); out_buf = p_out; switch (dst_fourcc) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: out_buf2 = out_buf + dst_stride * dst_height; break; default: out_buf2 = 0; } out_pitch = BF_PXP_OUT_PITCH_PITCH(dst_stride); out_lrc = BF_PXP_OUT_LRC_X(dst_width - 1) | BF_PXP_OUT_LRC_Y(dst_height - 1); /* PS covers whole output */ out_ps_ulc = BF_PXP_OUT_PS_ULC_X(0) | BF_PXP_OUT_PS_ULC_Y(0); out_ps_lrc = BF_PXP_OUT_PS_LRC_X(dst_width - 1) | BF_PXP_OUT_PS_LRC_Y(dst_height - 1); /* no AS */ as_ulc = BF_PXP_OUT_AS_ULC_X(1) | BF_PXP_OUT_AS_ULC_Y(1); as_lrc = BF_PXP_OUT_AS_LRC_X(0) | BF_PXP_OUT_AS_LRC_Y(0); decx = (src_width <= dst_width) ? 0 : ilog2(src_width / dst_width); decy = (src_height <= dst_height) ? 0 : ilog2(src_height / dst_height); ps_ctrl = BF_PXP_PS_CTRL_DECX(decx) | BF_PXP_PS_CTRL_DECY(decy) | pxp_v4l2_pix_fmt_to_ps_format(src_fourcc); ps_buf = p_in; y_size = src_stride * src_height; switch (src_fourcc) { case V4L2_PIX_FMT_YUV420: ps_ubuf = ps_buf + y_size; ps_vbuf = ps_ubuf + y_size / 4; break; case V4L2_PIX_FMT_YUV422P: ps_ubuf = ps_buf + y_size; ps_vbuf = ps_ubuf + y_size / 2; break; case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: ps_ubuf = ps_buf + y_size; ps_vbuf = 0; break; case V4L2_PIX_FMT_GREY: case V4L2_PIX_FMT_Y4: ps_ubuf = 0; /* In grayscale mode, ps_vbuf contents are reused as CbCr */ ps_vbuf = 0x8080; break; default: ps_ubuf = 0; ps_vbuf = 0; break; } ps_pitch = BF_PXP_PS_PITCH_PITCH(src_stride); if (decx) { xscale = (src_width >> decx) * 0x1000 / dst_width; } else { switch (src_fourcc) { case V4L2_PIX_FMT_UYVY: case V4L2_PIX_FMT_YUYV: case V4L2_PIX_FMT_VYUY: case V4L2_PIX_FMT_YVYU: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV61: case V4L2_PIX_FMT_YUV422P: case V4L2_PIX_FMT_YUV420: /* * This avoids sampling past the right edge for * horizontally chroma subsampled formats. */ xscale = (src_width - 2) * 0x1000 / (dst_width - 1); break; default: xscale = (src_width - 1) * 0x1000 / (dst_width - 1); break; } } if (decy) yscale = (src_height >> decy) * 0x1000 / dst_height; else yscale = (src_height - 1) * 0x1000 / (dst_height - 1); ps_scale = BF_PXP_PS_SCALE_YSCALE(yscale) | BF_PXP_PS_SCALE_XSCALE(xscale); ps_offset = BF_PXP_PS_OFFSET_YOFFSET(0) | BF_PXP_PS_OFFSET_XOFFSET(0); writel(ctrl, dev->mmio + HW_PXP_CTRL); /* skip STAT */ writel(out_ctrl, dev->mmio + HW_PXP_OUT_CTRL); writel(out_buf, dev->mmio + HW_PXP_OUT_BUF); writel(out_buf2, dev->mmio + HW_PXP_OUT_BUF2); writel(out_pitch, dev->mmio + HW_PXP_OUT_PITCH); writel(out_lrc, dev->mmio + HW_PXP_OUT_LRC); writel(out_ps_ulc, dev->mmio + HW_PXP_OUT_PS_ULC); writel(out_ps_lrc, dev->mmio + HW_PXP_OUT_PS_LRC); writel(as_ulc, dev->mmio + HW_PXP_OUT_AS_ULC); writel(as_lrc, dev->mmio + HW_PXP_OUT_AS_LRC); writel(ps_ctrl, dev->mmio + HW_PXP_PS_CTRL); writel(ps_buf, dev->mmio + HW_PXP_PS_BUF); writel(ps_ubuf, dev->mmio + HW_PXP_PS_UBUF); writel(ps_vbuf, dev->mmio + HW_PXP_PS_VBUF); writel(ps_pitch, dev->mmio + HW_PXP_PS_PITCH); writel(0x00ffffff, dev->mmio + HW_PXP_PS_BACKGROUND_0); writel(ps_scale, dev->mmio + HW_PXP_PS_SCALE); writel(ps_offset, dev->mmio + HW_PXP_PS_OFFSET); /* disable processed surface color keying */ writel(0x00ffffff, dev->mmio + HW_PXP_PS_CLRKEYLOW_0); writel(0x00000000, dev->mmio + HW_PXP_PS_CLRKEYHIGH_0); /* disable alpha surface color keying */ writel(0x00ffffff, dev->mmio + HW_PXP_AS_CLRKEYLOW_0); writel(0x00000000, dev->mmio + HW_PXP_AS_CLRKEYHIGH_0); /* setup CSC */ pxp_setup_csc(ctx); /* bypass LUT */ writel(BM_PXP_LUT_CTRL_BYPASS, dev->mmio + HW_PXP_LUT_CTRL); writel(BF_PXP_DATA_PATH_CTRL0_MUX15_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX14_SEL(1)| BF_PXP_DATA_PATH_CTRL0_MUX13_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX12_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX11_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX10_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX9_SEL(1)| BF_PXP_DATA_PATH_CTRL0_MUX8_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX7_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX6_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX5_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX4_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX3_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX2_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX1_SEL(0)| BF_PXP_DATA_PATH_CTRL0_MUX0_SEL(0), dev->mmio + HW_PXP_DATA_PATH_CTRL0); writel(BF_PXP_DATA_PATH_CTRL1_MUX17_SEL(1) | BF_PXP_DATA_PATH_CTRL1_MUX16_SEL(1), dev->mmio + HW_PXP_DATA_PATH_CTRL1); writel(0xffff, dev->mmio + HW_PXP_IRQ_MASK); /* ungate, enable PS/AS/OUT and PXP operation */ writel(BM_PXP_CTRL_IRQ_ENABLE, dev->mmio + HW_PXP_CTRL_SET); writel(BM_PXP_CTRL_ENABLE | BM_PXP_CTRL_ENABLE_CSC2 | BM_PXP_CTRL_ENABLE_LUT | BM_PXP_CTRL_ENABLE_ROTATE0 | BM_PXP_CTRL_ENABLE_PS_AS_OUT, dev->mmio + HW_PXP_CTRL_SET); return 0; } static void pxp_job_finish(struct pxp_dev *dev) { struct pxp_ctx *curr_ctx; struct vb2_v4l2_buffer *src_vb, *dst_vb; unsigned long flags; curr_ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev); if (curr_ctx == NULL) { pr_err("Instance released before the end of transaction\n"); return; } src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx); dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx); spin_lock_irqsave(&dev->irqlock, flags); v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); spin_unlock_irqrestore(&dev->irqlock, flags); dprintk(curr_ctx->dev, "Finishing transaction\n"); v4l2_m2m_job_finish(dev->m2m_dev, curr_ctx->fh.m2m_ctx); } /* * mem2mem callbacks */ static void pxp_device_run(void *priv) { struct pxp_ctx *ctx = priv; struct vb2_v4l2_buffer *src_buf, *dst_buf; src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); pxp_start(ctx, src_buf, dst_buf); } static int pxp_job_ready(void *priv) { struct pxp_ctx *ctx = priv; if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < 1 || v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < 1) { dprintk(ctx->dev, "Not enough buffers available\n"); return 0; } return 1; } static void pxp_job_abort(void *priv) { struct pxp_ctx *ctx = priv; /* Will cancel the transaction in the next interrupt handler */ ctx->aborting = 1; } /* * interrupt handler */ static irqreturn_t pxp_irq_handler(int irq, void *dev_id) { struct pxp_dev *dev = dev_id; u32 stat; stat = readl(dev->mmio + HW_PXP_STAT); if (stat & BM_PXP_STAT_IRQ0) { /* we expect x = 0, y = height, irq0 = 1 */ if (stat & ~(BM_PXP_STAT_BLOCKX | BM_PXP_STAT_BLOCKY | BM_PXP_STAT_IRQ0)) dprintk(dev, "%s: stat = 0x%08x\n", __func__, stat); writel(BM_PXP_STAT_IRQ0, dev->mmio + HW_PXP_STAT_CLR); pxp_job_finish(dev); } else { u32 irq = readl(dev->mmio + HW_PXP_IRQ); dprintk(dev, "%s: stat = 0x%08x\n", __func__, stat); dprintk(dev, "%s: irq = 0x%08x\n", __func__, irq); writel(irq, dev->mmio + HW_PXP_IRQ_CLR); } return IRQ_HANDLED; } /* * video ioctls */ static int pxp_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { strlcpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver)); strlcpy(cap->card, MEM2MEM_NAME, sizeof(cap->card)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", MEM2MEM_NAME); return 0; } static int pxp_enum_fmt(struct v4l2_fmtdesc *f, u32 type) { int i, num; struct pxp_fmt *fmt; num = 0; for (i = 0; i < NUM_FORMATS; ++i) { if (formats[i].types & type) { /* index-th format of type type found ? */ if (num == f->index) break; /* * Correct type but haven't reached our index yet, * just increment per-type index */ ++num; } } if (i < NUM_FORMATS) { /* Format found */ fmt = &formats[i]; f->pixelformat = fmt->fourcc; return 0; } /* Format not found */ return -EINVAL; } static int pxp_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { return pxp_enum_fmt(f, MEM2MEM_CAPTURE); } static int pxp_enum_fmt_vid_out(struct file *file, void *priv, struct v4l2_fmtdesc *f) { return pxp_enum_fmt(f, MEM2MEM_OUTPUT); } static int pxp_g_fmt(struct pxp_ctx *ctx, struct v4l2_format *f) { struct vb2_queue *vq; struct pxp_q_data *q_data; vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); if (!vq) return -EINVAL; q_data = get_q_data(ctx, f->type); f->fmt.pix.width = q_data->width; f->fmt.pix.height = q_data->height; f->fmt.pix.field = V4L2_FIELD_NONE; f->fmt.pix.pixelformat = q_data->fmt->fourcc; f->fmt.pix.bytesperline = q_data->bytesperline; f->fmt.pix.sizeimage = q_data->sizeimage; f->fmt.pix.colorspace = ctx->colorspace; f->fmt.pix.xfer_func = ctx->xfer_func; f->fmt.pix.ycbcr_enc = q_data->ycbcr_enc; f->fmt.pix.quantization = q_data->quant; return 0; } static int pxp_g_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { return pxp_g_fmt(file2ctx(file), f); } static int pxp_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { return pxp_g_fmt(file2ctx(file), f); } static inline u32 pxp_bytesperline(struct pxp_fmt *fmt, u32 width) { switch (fmt->fourcc) { case V4L2_PIX_FMT_YUV420: case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_YUV422P: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: return width; default: return (width * fmt->depth) >> 3; } } static inline u32 pxp_sizeimage(struct pxp_fmt *fmt, u32 width, u32 height) { return (fmt->depth * width * height) >> 3; } static int pxp_try_fmt(struct v4l2_format *f, struct pxp_fmt *fmt) { v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W, ALIGN_W, &f->fmt.pix.height, MIN_H, MAX_H, ALIGN_H, 0); f->fmt.pix.bytesperline = pxp_bytesperline(fmt, f->fmt.pix.width); f->fmt.pix.sizeimage = pxp_sizeimage(fmt, f->fmt.pix.width, f->fmt.pix.height); f->fmt.pix.field = V4L2_FIELD_NONE; return 0; } static void pxp_fixup_colorimetry_cap(struct pxp_ctx *ctx, u32 dst_fourcc, enum v4l2_ycbcr_encoding *ycbcr_enc, enum v4l2_quantization *quantization) { bool dst_is_yuv = pxp_v4l2_pix_fmt_is_yuv(dst_fourcc); if (pxp_v4l2_pix_fmt_is_yuv(ctx->q_data[V4L2_M2M_SRC].fmt->fourcc) == dst_is_yuv) { /* * There is no support for conversion between different YCbCr * encodings or between RGB limited and full range. */ *ycbcr_enc = ctx->q_data[V4L2_M2M_SRC].ycbcr_enc; *quantization = ctx->q_data[V4L2_M2M_SRC].quant; } else { *ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(ctx->colorspace); *quantization = V4L2_MAP_QUANTIZATION_DEFAULT(!dst_is_yuv, ctx->colorspace, *ycbcr_enc); } } static int pxp_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct pxp_fmt *fmt; struct pxp_ctx *ctx = file2ctx(file); fmt = find_format(f); if (!fmt) { f->fmt.pix.pixelformat = formats[0].fourcc; fmt = find_format(f); } if (!(fmt->types & MEM2MEM_CAPTURE)) { v4l2_err(&ctx->dev->v4l2_dev, "Fourcc format (0x%08x) invalid.\n", f->fmt.pix.pixelformat); return -EINVAL; } f->fmt.pix.colorspace = ctx->colorspace; f->fmt.pix.xfer_func = ctx->xfer_func; pxp_fixup_colorimetry_cap(ctx, fmt->fourcc, &f->fmt.pix.ycbcr_enc, &f->fmt.pix.quantization); return pxp_try_fmt(f, fmt); } static int pxp_try_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { struct pxp_fmt *fmt; struct pxp_ctx *ctx = file2ctx(file); fmt = find_format(f); if (!fmt) { f->fmt.pix.pixelformat = formats[0].fourcc; fmt = find_format(f); } if (!(fmt->types & MEM2MEM_OUTPUT)) { v4l2_err(&ctx->dev->v4l2_dev, "Fourcc format (0x%08x) invalid.\n", f->fmt.pix.pixelformat); return -EINVAL; } if (!f->fmt.pix.colorspace) f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; return pxp_try_fmt(f, fmt); } static int pxp_s_fmt(struct pxp_ctx *ctx, struct v4l2_format *f) { struct pxp_q_data *q_data; struct vb2_queue *vq; vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); if (!vq) return -EINVAL; q_data = get_q_data(ctx, f->type); if (!q_data) return -EINVAL; if (vb2_is_busy(vq)) { v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); return -EBUSY; } q_data->fmt = find_format(f); q_data->width = f->fmt.pix.width; q_data->height = f->fmt.pix.height; q_data->bytesperline = f->fmt.pix.bytesperline; q_data->sizeimage = f->fmt.pix.sizeimage; dprintk(ctx->dev, "Setting format for type %d, wxh: %dx%d, fmt: %d\n", f->type, q_data->width, q_data->height, q_data->fmt->fourcc); return 0; } static int pxp_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct pxp_ctx *ctx = file2ctx(file); int ret; ret = pxp_try_fmt_vid_cap(file, priv, f); if (ret) return ret; ret = pxp_s_fmt(file2ctx(file), f); if (ret) return ret; ctx->q_data[V4L2_M2M_DST].ycbcr_enc = f->fmt.pix.ycbcr_enc; ctx->q_data[V4L2_M2M_DST].quant = f->fmt.pix.quantization; return 0; } static int pxp_s_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { struct pxp_ctx *ctx = file2ctx(file); int ret; ret = pxp_try_fmt_vid_out(file, priv, f); if (ret) return ret; ret = pxp_s_fmt(file2ctx(file), f); if (ret) return ret; ctx->colorspace = f->fmt.pix.colorspace; ctx->xfer_func = f->fmt.pix.xfer_func; ctx->q_data[V4L2_M2M_SRC].ycbcr_enc = f->fmt.pix.ycbcr_enc; ctx->q_data[V4L2_M2M_SRC].quant = f->fmt.pix.quantization; pxp_fixup_colorimetry_cap(ctx, ctx->q_data[V4L2_M2M_DST].fmt->fourcc, &ctx->q_data[V4L2_M2M_DST].ycbcr_enc, &ctx->q_data[V4L2_M2M_DST].quant); return 0; } static int pxp_s_ctrl(struct v4l2_ctrl *ctrl) { struct pxp_ctx *ctx = container_of(ctrl->handler, struct pxp_ctx, hdl); switch (ctrl->id) { case V4L2_CID_HFLIP: if (ctrl->val) ctx->mode |= MEM2MEM_HFLIP; else ctx->mode &= ~MEM2MEM_HFLIP; break; case V4L2_CID_VFLIP: if (ctrl->val) ctx->mode |= MEM2MEM_VFLIP; else ctx->mode &= ~MEM2MEM_VFLIP; break; case V4L2_CID_ALPHA_COMPONENT: ctx->alpha_component = ctrl->val; break; default: v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); return -EINVAL; } return 0; } static const struct v4l2_ctrl_ops pxp_ctrl_ops = { .s_ctrl = pxp_s_ctrl, }; static const struct v4l2_ioctl_ops pxp_ioctl_ops = { .vidioc_querycap = pxp_querycap, .vidioc_enum_fmt_vid_cap = pxp_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = pxp_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = pxp_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = pxp_s_fmt_vid_cap, .vidioc_enum_fmt_vid_out = pxp_enum_fmt_vid_out, .vidioc_g_fmt_vid_out = pxp_g_fmt_vid_out, .vidioc_try_fmt_vid_out = pxp_try_fmt_vid_out, .vidioc_s_fmt_vid_out = pxp_s_fmt_vid_out, .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, .vidioc_streamon = v4l2_m2m_ioctl_streamon, .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; /* * Queue operations */ static int pxp_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct pxp_ctx *ctx = vb2_get_drv_priv(vq); struct pxp_q_data *q_data; unsigned int size, count = *nbuffers; q_data = get_q_data(ctx, vq->type); size = q_data->sizeimage; *nbuffers = count; if (*nplanes) return sizes[0] < size ? -EINVAL : 0; *nplanes = 1; sizes[0] = size; dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); return 0; } static int pxp_buf_prepare(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct pxp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); struct pxp_dev *dev = ctx->dev; struct pxp_q_data *q_data; dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); q_data = get_q_data(ctx, vb->vb2_queue->type); if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { if (vbuf->field == V4L2_FIELD_ANY) vbuf->field = V4L2_FIELD_NONE; if (vbuf->field != V4L2_FIELD_NONE) { dprintk(dev, "%s field isn't supported\n", __func__); return -EINVAL; } } if (vb2_plane_size(vb, 0) < q_data->sizeimage) { dprintk(dev, "%s data will not fit into plane (%lu < %lu)\n", __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); return -EINVAL; } vb2_set_plane_payload(vb, 0, q_data->sizeimage); return 0; } static void pxp_buf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct pxp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); } static int pxp_start_streaming(struct vb2_queue *q, unsigned int count) { struct pxp_ctx *ctx = vb2_get_drv_priv(q); struct pxp_q_data *q_data = get_q_data(ctx, q->type); q_data->sequence = 0; return 0; } static void pxp_stop_streaming(struct vb2_queue *q) { struct pxp_ctx *ctx = vb2_get_drv_priv(q); struct vb2_v4l2_buffer *vbuf; unsigned long flags; for (;;) { if (V4L2_TYPE_IS_OUTPUT(q->type)) vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); else vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); if (vbuf == NULL) return; spin_lock_irqsave(&ctx->dev->irqlock, flags); v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR); spin_unlock_irqrestore(&ctx->dev->irqlock, flags); } } static const struct vb2_ops pxp_qops = { .queue_setup = pxp_queue_setup, .buf_prepare = pxp_buf_prepare, .buf_queue = pxp_buf_queue, .start_streaming = pxp_start_streaming, .stop_streaming = pxp_stop_streaming, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, }; static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) { struct pxp_ctx *ctx = priv; int ret; src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; src_vq->io_modes = VB2_MMAP | VB2_DMABUF; src_vq->drv_priv = ctx; src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); src_vq->ops = &pxp_qops; src_vq->mem_ops = &vb2_dma_contig_memops; src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; src_vq->lock = &ctx->dev->dev_mutex; src_vq->dev = ctx->dev->v4l2_dev.dev; ret = vb2_queue_init(src_vq); if (ret) return ret; dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; dst_vq->drv_priv = ctx; dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); dst_vq->ops = &pxp_qops; dst_vq->mem_ops = &vb2_dma_contig_memops; dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; dst_vq->lock = &ctx->dev->dev_mutex; dst_vq->dev = ctx->dev->v4l2_dev.dev; return vb2_queue_init(dst_vq); } /* * File operations */ static int pxp_open(struct file *file) { struct pxp_dev *dev = video_drvdata(file); struct pxp_ctx *ctx = NULL; struct v4l2_ctrl_handler *hdl; int rc = 0; if (mutex_lock_interruptible(&dev->dev_mutex)) return -ERESTARTSYS; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) { rc = -ENOMEM; goto open_unlock; } v4l2_fh_init(&ctx->fh, video_devdata(file)); file->private_data = &ctx->fh; ctx->dev = dev; hdl = &ctx->hdl; v4l2_ctrl_handler_init(hdl, 4); v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(hdl, &pxp_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 255); if (hdl->error) { rc = hdl->error; v4l2_ctrl_handler_free(hdl); kfree(ctx); goto open_unlock; } ctx->fh.ctrl_handler = hdl; v4l2_ctrl_handler_setup(hdl); ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; ctx->q_data[V4L2_M2M_SRC].width = 640; ctx->q_data[V4L2_M2M_SRC].height = 480; ctx->q_data[V4L2_M2M_SRC].bytesperline = pxp_bytesperline(&formats[0], 640); ctx->q_data[V4L2_M2M_SRC].sizeimage = pxp_sizeimage(&formats[0], 640, 480); ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; ctx->colorspace = V4L2_COLORSPACE_REC709; ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); if (IS_ERR(ctx->fh.m2m_ctx)) { rc = PTR_ERR(ctx->fh.m2m_ctx); v4l2_ctrl_handler_free(hdl); v4l2_fh_exit(&ctx->fh); kfree(ctx); goto open_unlock; } v4l2_fh_add(&ctx->fh); atomic_inc(&dev->num_inst); dprintk(dev, "Created instance: %p, m2m_ctx: %p\n", ctx, ctx->fh.m2m_ctx); open_unlock: mutex_unlock(&dev->dev_mutex); return rc; } static int pxp_release(struct file *file) { struct pxp_dev *dev = video_drvdata(file); struct pxp_ctx *ctx = file2ctx(file); dprintk(dev, "Releasing instance %p\n", ctx); v4l2_fh_del(&ctx->fh); v4l2_fh_exit(&ctx->fh); v4l2_ctrl_handler_free(&ctx->hdl); mutex_lock(&dev->dev_mutex); v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); mutex_unlock(&dev->dev_mutex); kfree(ctx); atomic_dec(&dev->num_inst); return 0; } static const struct v4l2_file_operations pxp_fops = { .owner = THIS_MODULE, .open = pxp_open, .release = pxp_release, .poll = v4l2_m2m_fop_poll, .unlocked_ioctl = video_ioctl2, .mmap = v4l2_m2m_fop_mmap, }; static const struct video_device pxp_videodev = { .name = MEM2MEM_NAME, .vfl_dir = VFL_DIR_M2M, .fops = &pxp_fops, .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING, .ioctl_ops = &pxp_ioctl_ops, .minor = -1, .release = video_device_release_empty, }; static const struct v4l2_m2m_ops m2m_ops = { .device_run = pxp_device_run, .job_ready = pxp_job_ready, .job_abort = pxp_job_abort, }; static void pxp_soft_reset(struct pxp_dev *dev) { int ret; u32 val; writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_CLR); writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_CLR); writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_SET); ret = readl_poll_timeout(dev->mmio + HW_PXP_CTRL, val, val & BM_PXP_CTRL_CLKGATE, 0, 100); if (ret < 0) pr_err("PXP reset timeout\n"); writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_CLR); writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_CLR); } static int pxp_probe(struct platform_device *pdev) { struct pxp_dev *dev; struct resource *res; struct video_device *vfd; int irq; int ret; dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; dev->clk = devm_clk_get(&pdev->dev, "axi"); if (IS_ERR(dev->clk)) { ret = PTR_ERR(dev->clk); dev_err(&pdev->dev, "Failed to get clk: %d\n", ret); return ret; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); dev->mmio = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(dev->mmio)) { ret = PTR_ERR(dev->mmio); dev_err(&pdev->dev, "Failed to map register space: %d\n", ret); return ret; } irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(&pdev->dev, "Failed to get irq resource: %d\n", irq); return irq; } ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, pxp_irq_handler, IRQF_ONESHOT, dev_name(&pdev->dev), dev); if (ret < 0) { dev_err(&pdev->dev, "Failed to request irq: %d\n", ret); return ret; } clk_prepare_enable(dev->clk); pxp_soft_reset(dev); spin_lock_init(&dev->irqlock); ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); if (ret) goto err_clk; atomic_set(&dev->num_inst, 0); mutex_init(&dev->dev_mutex); dev->vfd = pxp_videodev; vfd = &dev->vfd; vfd->lock = &dev->dev_mutex; vfd->v4l2_dev = &dev->v4l2_dev; video_set_drvdata(vfd, dev); snprintf(vfd->name, sizeof(vfd->name), "%s", pxp_videodev.name); v4l2_info(&dev->v4l2_dev, "Device registered as /dev/video%d\n", vfd->num); platform_set_drvdata(pdev, dev); dev->m2m_dev = v4l2_m2m_init(&m2m_ops); if (IS_ERR(dev->m2m_dev)) { v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); ret = PTR_ERR(dev->m2m_dev); goto err_v4l2; } ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); if (ret) { v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); goto err_m2m; } return 0; err_m2m: v4l2_m2m_release(dev->m2m_dev); err_v4l2: v4l2_device_unregister(&dev->v4l2_dev); err_clk: clk_disable_unprepare(dev->clk); return ret; } static int pxp_remove(struct platform_device *pdev) { struct pxp_dev *dev = platform_get_drvdata(pdev); writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_SET); writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_SET); clk_disable_unprepare(dev->clk); v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME); video_unregister_device(&dev->vfd); v4l2_m2m_release(dev->m2m_dev); v4l2_device_unregister(&dev->v4l2_dev); return 0; } static const struct of_device_id pxp_dt_ids[] = { { .compatible = "fsl,imx6ull-pxp", .data = NULL }, { }, }; MODULE_DEVICE_TABLE(of, pxp_dt_ids); static struct platform_driver pxp_driver = { .probe = pxp_probe, .remove = pxp_remove, .driver = { .name = MEM2MEM_NAME, .of_match_table = of_match_ptr(pxp_dt_ids), }, }; module_platform_driver(pxp_driver); MODULE_DESCRIPTION("i.MX PXP mem2mem scaler/CSC/rotator"); MODULE_AUTHOR("Philipp Zabel <kernel@pengutronix.de>"); MODULE_LICENSE("GPL");
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