// 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/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_VUYA32,
.depth = 32,
.types = MEM2MEM_CAPTURE,
}, {
.fourcc = V4L2_PIX_FMT_VUYX32,
.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_VUYX32: 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_VUYA32:
case V4L2_PIX_FMT_VUYX32: 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_VUYA32:
case V4L2_PIX_FMT_VUYX32:
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_BT2020) {
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)
{
strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
strscpy(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 int 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)
return ret;
writel(BM_PXP_CTRL_SFTRST, dev->mmio + HW_PXP_CTRL_CLR);
writel(BM_PXP_CTRL_CLKGATE, dev->mmio + HW_PXP_CTRL_CLR);
return 0;
}
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;
}
ret = clk_prepare_enable(dev->clk);
if (ret < 0)
return ret;
ret = pxp_soft_reset(dev);
if (ret < 0) {
dev_err(&pdev->dev, "PXP reset timeout: %d\n", ret);
goto err_clk;
}
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");
