Release 4.7 drivers/media/platform/xilinx/xilinx-tpg.c
/*
* Xilinx Test Pattern Generator
*
* Copyright (C) 2013-2015 Ideas on Board
* Copyright (C) 2013-2015 Xilinx, Inc.
*
* Contacts: Hyun Kwon <hyun.kwon@xilinx.com>
* Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/xilinx-v4l2-controls.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#include "xilinx-vip.h"
#include "xilinx-vtc.h"
#define XTPG_CTRL_STATUS_SLAVE_ERROR (1 << 16)
#define XTPG_CTRL_IRQ_SLAVE_ERROR (1 << 16)
#define XTPG_PATTERN_CONTROL 0x0100
#define XTPG_PATTERN_MASK (0xf << 0)
#define XTPG_PATTERN_CONTROL_CROSS_HAIRS (1 << 4)
#define XTPG_PATTERN_CONTROL_MOVING_BOX (1 << 5)
#define XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT 6
#define XTPG_PATTERN_CONTROL_COLOR_MASK_MASK (0xf << 6)
#define XTPG_PATTERN_CONTROL_STUCK_PIXEL (1 << 9)
#define XTPG_PATTERN_CONTROL_NOISE (1 << 10)
#define XTPG_PATTERN_CONTROL_MOTION (1 << 12)
#define XTPG_MOTION_SPEED 0x0104
#define XTPG_CROSS_HAIRS 0x0108
#define XTPG_CROSS_HAIRS_ROW_SHIFT 0
#define XTPG_CROSS_HAIRS_ROW_MASK (0xfff << 0)
#define XTPG_CROSS_HAIRS_COLUMN_SHIFT 16
#define XTPG_CROSS_HAIRS_COLUMN_MASK (0xfff << 16)
#define XTPG_ZPLATE_HOR_CONTROL 0x010c
#define XTPG_ZPLATE_VER_CONTROL 0x0110
#define XTPG_ZPLATE_START_SHIFT 0
#define XTPG_ZPLATE_START_MASK (0xffff << 0)
#define XTPG_ZPLATE_SPEED_SHIFT 16
#define XTPG_ZPLATE_SPEED_MASK (0xffff << 16)
#define XTPG_BOX_SIZE 0x0114
#define XTPG_BOX_COLOR 0x0118
#define XTPG_STUCK_PIXEL_THRESH 0x011c
#define XTPG_NOISE_GAIN 0x0120
#define XTPG_BAYER_PHASE 0x0124
#define XTPG_BAYER_PHASE_RGGB 0
#define XTPG_BAYER_PHASE_GRBG 1
#define XTPG_BAYER_PHASE_GBRG 2
#define XTPG_BAYER_PHASE_BGGR 3
#define XTPG_BAYER_PHASE_OFF 4
/*
* The minimum blanking value is one clock cycle for the front porch, one clock
* cycle for the sync pulse and one clock cycle for the back porch.
*/
#define XTPG_MIN_HBLANK 3
#define XTPG_MAX_HBLANK (XVTC_MAX_HSIZE - XVIP_MIN_WIDTH)
#define XTPG_MIN_VBLANK 3
#define XTPG_MAX_VBLANK (XVTC_MAX_VSIZE - XVIP_MIN_HEIGHT)
/**
* struct xtpg_device - Xilinx Test Pattern Generator device structure
* @xvip: Xilinx Video IP device
* @pads: media pads
* @npads: number of pads (1 or 2)
* @has_input: whether an input is connected to the sink pad
* @formats: active V4L2 media bus format for each pad
* @default_format: default V4L2 media bus format
* @vip_format: format information corresponding to the active format
* @bayer: boolean flag if TPG is set to any bayer format
* @ctrl_handler: control handler
* @hblank: horizontal blanking control
* @vblank: vertical blanking control
* @pattern: test pattern control
* @streaming: is the video stream active
* @vtc: video timing controller
* @vtmux_gpio: video timing mux GPIO
*/
struct xtpg_device {
struct xvip_device xvip;
struct media_pad pads[2];
unsigned int npads;
bool has_input;
struct v4l2_mbus_framefmt formats[2];
struct v4l2_mbus_framefmt default_format;
const struct xvip_video_format *vip_format;
bool bayer;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *pattern;
bool streaming;
struct xvtc_device *vtc;
struct gpio_desc *vtmux_gpio;
};
static inline struct xtpg_device *to_tpg(struct v4l2_subdev *subdev)
{
return container_of(subdev, struct xtpg_device, xvip.subdev);
}
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static u32 xtpg_get_bayer_phase(unsigned int code)
{
switch (code) {
case MEDIA_BUS_FMT_SRGGB8_1X8:
return XTPG_BAYER_PHASE_RGGB;
case MEDIA_BUS_FMT_SGRBG8_1X8:
return XTPG_BAYER_PHASE_GRBG;
case MEDIA_BUS_FMT_SGBRG8_1X8:
return XTPG_BAYER_PHASE_GBRG;
case MEDIA_BUS_FMT_SBGGR8_1X8:
return XTPG_BAYER_PHASE_BGGR;
default:
return XTPG_BAYER_PHASE_OFF;
}
}
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static void __xtpg_update_pattern_control(struct xtpg_device *xtpg,
bool passthrough, bool pattern)
{
u32 pattern_mask = (1 << (xtpg->pattern->maximum + 1)) - 1;
/*
* If the TPG has no sink pad or no input connected to its sink pad
* passthrough mode can't be enabled.
*/
if (xtpg->npads == 1 || !xtpg->has_input)
passthrough = false;
/* If passthrough mode is allowed unmask bit 0. */
if (passthrough)
pattern_mask &= ~1;
/* If test pattern mode is allowed unmask all other bits. */
if (pattern)
pattern_mask &= 1;
__v4l2_ctrl_modify_range(xtpg->pattern, 0, xtpg->pattern->maximum,
pattern_mask, pattern ? 9 : 0);
}
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static void xtpg_update_pattern_control(struct xtpg_device *xtpg,
bool passthrough, bool pattern)
{
mutex_lock(xtpg->ctrl_handler.lock);
__xtpg_update_pattern_control(xtpg, passthrough, pattern);
mutex_unlock(xtpg->ctrl_handler.lock);
}
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/* -----------------------------------------------------------------------------
* V4L2 Subdevice Video Operations
*/
static int xtpg_s_stream(struct v4l2_subdev *subdev, int enable)
{
struct xtpg_device *xtpg = to_tpg(subdev);
unsigned int width = xtpg->formats[0].width;
unsigned int height = xtpg->formats[0].height;
bool passthrough;
u32 bayer_phase;
if (!enable) {
xvip_stop(&xtpg->xvip);
if (xtpg->vtc)
xvtc_generator_stop(xtpg->vtc);
xtpg_update_pattern_control(xtpg, true, true);
xtpg->streaming = false;
return 0;
}
xvip_set_frame_size(&xtpg->xvip, &xtpg->formats[0]);
if (xtpg->vtc) {
struct xvtc_config config = {
.hblank_start = width,
.hsync_start = width + 1,
.vblank_start = height,
.vsync_start = height + 1,
};
unsigned int htotal;
unsigned int vtotal;
htotal = min_t(unsigned int, XVTC_MAX_HSIZE,
v4l2_ctrl_g_ctrl(xtpg->hblank) + width);
vtotal = min_t(unsigned int, XVTC_MAX_VSIZE,
v4l2_ctrl_g_ctrl(xtpg->vblank) + height);
config.hsync_end = htotal - 1;
config.hsize = htotal;
config.vsync_end = vtotal - 1;
config.vsize = vtotal;
xvtc_generator_start(xtpg->vtc, &config);
}
/*
* Configure the bayer phase and video timing mux based on the
* operation mode (passthrough or test pattern generation). The test
* pattern can be modified by the control set handler, we thus need to
* take the control lock here to avoid races.
*/
mutex_lock(xtpg->ctrl_handler.lock);
xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_MASK, xtpg->pattern->cur.val);
/*
* Switching between passthrough and test pattern generation modes isn't
* allowed during streaming, update the control range accordingly.
*/
passthrough = xtpg->pattern->cur.val == 0;
__xtpg_update_pattern_control(xtpg, passthrough, !passthrough);
xtpg->streaming = true;
mutex_unlock(xtpg->ctrl_handler.lock);
/*
* For TPG v5.0, the bayer phase needs to be off for the pass through
* mode, otherwise the external input would be subsampled.
*/
bayer_phase = passthrough ? XTPG_BAYER_PHASE_OFF
: xtpg_get_bayer_phase(xtpg->formats[0].code);
xvip_write(&xtpg->xvip, XTPG_BAYER_PHASE, bayer_phase);
if (xtpg->vtmux_gpio)
gpiod_set_value_cansleep(xtpg->vtmux_gpio, !passthrough);
xvip_start(&xtpg->xvip);
return 0;
}
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/* -----------------------------------------------------------------------------
* V4L2 Subdevice Pad Operations
*/
static struct v4l2_mbus_framefmt *
__xtpg_get_pad_format(struct xtpg_device *xtpg,
struct v4l2_subdev_pad_config *cfg,
unsigned int pad, u32 which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_format(&xtpg->xvip.subdev, cfg, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &xtpg->formats[pad];
default:
return NULL;
}
}
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static int xtpg_get_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct xtpg_device *xtpg = to_tpg(subdev);
fmt->format = *__xtpg_get_pad_format(xtpg, cfg, fmt->pad, fmt->which);
return 0;
}
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static int xtpg_set_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct xtpg_device *xtpg = to_tpg(subdev);
struct v4l2_mbus_framefmt *__format;
u32 bayer_phase;
__format = __xtpg_get_pad_format(xtpg, cfg, fmt->pad, fmt->which);
/* In two pads mode the source pad format is always identical to the
* sink pad format.
*/
if (xtpg->npads == 2 && fmt->pad == 1) {
fmt->format = *__format;
return 0;
}
/* Bayer phase is configurable at runtime */
if (xtpg->bayer) {
bayer_phase = xtpg_get_bayer_phase(fmt->format.code);
if (bayer_phase != XTPG_BAYER_PHASE_OFF)
__format->code = fmt->format.code;
}
xvip_set_format_size(__format, fmt);
fmt->format = *__format;
/* Propagate the format to the source pad. */
if (xtpg->npads == 2) {
__format = __xtpg_get_pad_format(xtpg, cfg, 1, fmt->which);
*__format = fmt->format;
}
return 0;
}
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/* -----------------------------------------------------------------------------
* V4L2 Subdevice Operations
*/
static int xtpg_enum_frame_size(struct v4l2_subdev *subdev,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
struct v4l2_mbus_framefmt *format;
format = v4l2_subdev_get_try_format(subdev, cfg, fse->pad);
if (fse->index || fse->code != format->code)
return -EINVAL;
/* Min / max values for pad 0 is always fixed in both one and two pads
* modes. In two pads mode, the source pad(= 1) size is identical to
* the sink pad size */
if (fse->pad == 0) {
fse->min_width = XVIP_MIN_WIDTH;
fse->max_width = XVIP_MAX_WIDTH;
fse->min_height = XVIP_MIN_HEIGHT;
fse->max_height = XVIP_MAX_HEIGHT;
} else {
fse->min_width = format->width;
fse->max_width = format->width;
fse->min_height = format->height;
fse->max_height = format->height;
}
return 0;
}
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static int xtpg_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
{
struct xtpg_device *xtpg = to_tpg(subdev);
struct v4l2_mbus_framefmt *format;
format = v4l2_subdev_get_try_format(subdev, fh->pad, 0);
*format = xtpg->default_format;
if (xtpg->npads == 2) {
format = v4l2_subdev_get_try_format(subdev, fh->pad, 1);
*format = xtpg->default_format;
}
return 0;
}
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static int xtpg_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
{
return 0;
}
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static int xtpg_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct xtpg_device *xtpg = container_of(ctrl->handler,
struct xtpg_device,
ctrl_handler);
switch (ctrl->id) {
case V4L2_CID_TEST_PATTERN:
xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_MASK, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_CROSS_HAIRS:
xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_CONTROL_CROSS_HAIRS, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_MOVING_BOX:
xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_CONTROL_MOVING_BOX, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_COLOR_MASK:
xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_CONTROL_COLOR_MASK_MASK,
ctrl->val <<
XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT);
return 0;
case V4L2_CID_XILINX_TPG_STUCK_PIXEL:
xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_CONTROL_STUCK_PIXEL, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_NOISE:
xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_CONTROL_NOISE, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_MOTION:
xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
XTPG_PATTERN_CONTROL_MOTION, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_MOTION_SPEED:
xvip_write(&xtpg->xvip, XTPG_MOTION_SPEED, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW:
xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS,
XTPG_CROSS_HAIRS_ROW_MASK,
ctrl->val << XTPG_CROSS_HAIRS_ROW_SHIFT);
return 0;
case V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN:
xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS,
XTPG_CROSS_HAIRS_COLUMN_MASK,
ctrl->val << XTPG_CROSS_HAIRS_COLUMN_SHIFT);
return 0;
case V4L2_CID_XILINX_TPG_ZPLATE_HOR_START:
xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL,
XTPG_ZPLATE_START_MASK,
ctrl->val << XTPG_ZPLATE_START_SHIFT);
return 0;
case V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED:
xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL,
XTPG_ZPLATE_SPEED_MASK,
ctrl->val << XTPG_ZPLATE_SPEED_SHIFT);
return 0;
case V4L2_CID_XILINX_TPG_ZPLATE_VER_START:
xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL,
XTPG_ZPLATE_START_MASK,
ctrl->val << XTPG_ZPLATE_START_SHIFT);
return 0;
case V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED:
xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL,
XTPG_ZPLATE_SPEED_MASK,
ctrl->val << XTPG_ZPLATE_SPEED_SHIFT);
return 0;
case V4L2_CID_XILINX_TPG_BOX_SIZE:
xvip_write(&xtpg->xvip, XTPG_BOX_SIZE, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_BOX_COLOR:
xvip_write(&xtpg->xvip, XTPG_BOX_COLOR, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH:
xvip_write(&xtpg->xvip, XTPG_STUCK_PIXEL_THRESH, ctrl->val);
return 0;
case V4L2_CID_XILINX_TPG_NOISE_GAIN:
xvip_write(&xtpg->xvip, XTPG_NOISE_GAIN, ctrl->val);
return 0;
}
return 0;
}
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static const struct v4l2_ctrl_ops xtpg_ctrl_ops = {
.s_ctrl = xtpg_s_ctrl,
};
static struct v4l2_subdev_core_ops xtpg_core_ops = {
};
static struct v4l2_subdev_video_ops xtpg_video_ops = {
.s_stream = xtpg_s_stream,
};
static struct v4l2_subdev_pad_ops xtpg_pad_ops = {
.enum_mbus_code = xvip_enum_mbus_code,
.enum_frame_size = xtpg_enum_frame_size,
.get_fmt = xtpg_get_format,
.set_fmt = xtpg_set_format,
};
static struct v4l2_subdev_ops xtpg_ops = {
.core = &xtpg_core_ops,
.video = &xtpg_video_ops,
.pad = &xtpg_pad_ops,
};
static const struct v4l2_subdev_internal_ops xtpg_internal_ops = {
.open = xtpg_open,
.close = xtpg_close,
};
/*
* Control Config
*/
static const char *const xtpg_pattern_strings[] = {
"Passthrough",
"Horizontal Ramp",
"Vertical Ramp",
"Temporal Ramp",
"Solid Red",
"Solid Green",
"Solid Blue",
"Solid Black",
"Solid White",
"Color Bars",
"Zone Plate",
"Tartan Color Bars",
"Cross Hatch",
"None",
"Vertical/Horizontal Ramps",
"Black/White Checker Board",
};
static struct v4l2_ctrl_config xtpg_ctrls[] = {
{
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_CROSS_HAIRS,
.name = "Test Pattern: Cross Hairs",
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = false,
.max = true,
.step = 1,
.def = 0,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_MOVING_BOX,
.name = "Test Pattern: Moving Box",
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = false,
.max = true,
.step = 1,
.def = 0,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_COLOR_MASK,
.name = "Test Pattern: Color Mask",
.type = V4L2_CTRL_TYPE_BITMASK,
.min = 0,
.max = 0xf,
.def = 0,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_STUCK_PIXEL,
.name = "Test Pattern: Stuck Pixel",
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = false,
.max = true,
.step = 1,
.def = 0,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_NOISE,
.name = "Test Pattern: Noise",
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = false,
.max = true,
.step = 1,
.def = 0,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_MOTION,
.name = "Test Pattern: Motion",
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = false,
.max = true,
.step = 1,
.def = 0,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_MOTION_SPEED,
.name = "Test Pattern: Motion Speed",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 8) - 1,
.step = 1,
.def = 4,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW,
.name = "Test Pattern: Cross Hairs Row",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 12) - 1,
.step = 1,
.def = 0x64,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN,
.name = "Test Pattern: Cross Hairs Column",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 12) - 1,
.step = 1,
.def = 0x64,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_ZPLATE_HOR_START,
.name = "Test Pattern: Zplate Horizontal Start Pos",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 16) - 1,
.step = 1,
.def = 0x1e,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED,
.name = "Test Pattern: Zplate Horizontal Speed",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 16) - 1,
.step = 1,
.def = 0,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_ZPLATE_VER_START,
.name = "Test Pattern: Zplate Vertical Start Pos",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 16) - 1,
.step = 1,
.def = 1,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED,
.name = "Test Pattern: Zplate Vertical Speed",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 16) - 1,
.step = 1,
.def = 0,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_BOX_SIZE,
.name = "Test Pattern: Box Size",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 12) - 1,
.step = 1,
.def = 0x32,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_BOX_COLOR,
.name = "Test Pattern: Box Color(RGB)",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 24) - 1,
.step = 1,
.def = 0,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH,
.name = "Test Pattern: Stuck Pixel threshold",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 16) - 1,
.step = 1,
.def = 0,
.flags = V4L2_CTRL_FLAG_SLIDER,
}, {
.ops = &xtpg_ctrl_ops,
.id = V4L2_CID_XILINX_TPG_NOISE_GAIN,
.name = "Test Pattern: Noise Gain",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = (1 << 8) - 1,
.step = 1,
.def = 0,
.flags = V4L2_CTRL_FLAG_SLIDER,
},
};
/* -----------------------------------------------------------------------------
* Media Operations
*/
static const struct media_entity_operations xtpg_media_ops = {
.link_validate = v4l2_subdev_link_validate,
};
/* -----------------------------------------------------------------------------
* Power Management
*/
static int __maybe_unused xtpg_pm_suspend(struct device *dev)
{
struct xtpg_device *xtpg = dev_get_drvdata(dev);
xvip_suspend(&xtpg->xvip);
return 0;
}
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static int __maybe_unused xtpg_pm_resume(struct device *dev)
{
struct xtpg_device *xtpg = dev_get_drvdata(dev);
xvip_resume(&xtpg->xvip);
return 0;
}
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/* -----------------------------------------------------------------------------
* Platform Device Driver
*/
static int xtpg_parse_of(struct xtpg_device *xtpg)
{
struct device *dev = xtpg->xvip.dev;
struct device_node *node = xtpg->xvip.dev->of_node;
struct device_node *ports;
struct device_node *port;
unsigned int nports = 0;
bool has_endpoint = false;
ports = of_get_child_by_name(node, "ports");
if (ports == NULL)
ports = node;
for_each_child_of_node(ports, port) {
const struct xvip_video_format *format;
struct device_node *endpoint;
if (!port->name || of_node_cmp(port->name, "port"))
continue;
format = xvip_of_get_format(port);
if (IS_ERR(format)) {
dev_err(dev, "invalid format in DT");
of_node_put(port);
return PTR_ERR(format);
}
/* Get and check the format description */
if (!xtpg->vip_format) {
xtpg->vip_format = format;
} else if (xtpg->vip_format != format) {
dev_err(dev, "in/out format mismatch in DT");
of_node_put(port);
return -EINVAL;
}
if (nports == 0) {
endpoint = of_get_next_child(port, NULL);
if (endpoint)
has_endpoint = true;
of_node_put(endpoint);
}
/* Count the number of ports. */
nports++;
}
if (nports != 1 && nports != 2) {
dev_err(dev, "invalid number of ports %u\n", nports);
return -EINVAL;
}
xtpg->npads = nports;
if (nports == 2 && has_endpoint)
xtpg->has_input = true;
return 0;
}
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static int xtpg_probe(struct platform_device *pdev)
{
struct v4l2_subdev *subdev;
struct xtpg_device *xtpg;
u32 i, bayer_phase;
int ret;
xtpg = devm_kzalloc(&pdev->dev, sizeof(*xtpg), GFP_KERNEL);
if (!xtpg)
return -ENOMEM;
xtpg->xvip.dev = &pdev->dev;
ret = xtpg_parse_of(xtpg);
if (ret < 0)
return ret;
ret = xvip_init_resources(&xtpg->xvip);
if (ret < 0)
return ret;
xtpg->vtmux_gpio = devm_gpiod_get_optional(&pdev->dev, "timing",
GPIOD_OUT_HIGH);
if (IS_ERR(xtpg->vtmux_gpio)) {
ret = PTR_ERR(xtpg->vtmux_gpio);
goto error_resource;
}
xtpg->vtc = xvtc_of_get(pdev->dev.of_node);
if (IS_ERR(xtpg->vtc)) {
ret = PTR_ERR(xtpg->vtc);
goto error_resource;
}
/* Reset and initialize the core */
xvip_reset(&xtpg->xvip);
/* Initialize V4L2 subdevice and media entity. Pad numbers depend on the
* number of pads.
*/
if (xtpg->npads == 2) {
xtpg->pads[0].flags = MEDIA_PAD_FL_SINK;
xtpg->pads[1].flags = MEDIA_PAD_FL_SOURCE;
} else {
xtpg->pads[0].flags = MEDIA_PAD_FL_SOURCE;
}
/* Initialize the default format */
xtpg->default_format.code = xtpg->vip_format->code;
xtpg->default_format.field = V4L2_FIELD_NONE;
xtpg->default_format.colorspace = V4L2_COLORSPACE_SRGB;
xvip_get_frame_size(&xtpg->xvip, &xtpg->default_format);
bayer_phase = xtpg_get_bayer_phase(xtpg->vip_format->code);
if (bayer_phase != XTPG_BAYER_PHASE_OFF)
xtpg->bayer = true;
xtpg->formats[0] = xtpg->default_format;
if (xtpg->npads == 2)
xtpg->formats[1] = xtpg->default_format;
/* Initialize V4L2 subdevice and media entity */
subdev = &xtpg->xvip.subdev;
v4l2_subdev_init(subdev, &xtpg_ops);
subdev->dev = &pdev->dev;
subdev->internal_ops = &xtpg_internal_ops;
strlcpy(subdev->name, dev_name(&pdev->dev), sizeof(subdev->name));
v4l2_set_subdevdata(subdev, xtpg);
subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
subdev->entity.ops = &xtpg_media_ops;
ret = media_entity_pads_init(&subdev->entity, xtpg->npads, xtpg->pads);
if (ret < 0)
goto error;
v4l2_ctrl_handler_init(&xtpg->ctrl_handler, 3 + ARRAY_SIZE(xtpg_ctrls));
xtpg->vblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops,
V4L2_CID_VBLANK, XTPG_MIN_VBLANK,
XTPG_MAX_VBLANK, 1, 100);
xtpg->hblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops,
V4L2_CID_HBLANK, XTPG_MIN_HBLANK,
XTPG_MAX_HBLANK, 1, 100);
xtpg->pattern = v4l2_ctrl_new_std_menu_items(&xtpg->ctrl_handler,
&xtpg_ctrl_ops, V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(xtpg_pattern_strings) - 1,
1, 9, xtpg_pattern_strings);
for (i = 0; i < ARRAY_SIZE(xtpg_ctrls); i++)
v4l2_ctrl_new_custom(&xtpg->ctrl_handler, &xtpg_ctrls[i], NULL);
if (xtpg->ctrl_handler.error) {
dev_err(&pdev->dev, "failed to add controls\n");
ret = xtpg->ctrl_handler.error;
goto error;
}
subdev->ctrl_handler = &xtpg->ctrl_handler;
xtpg_update_pattern_control(xtpg, true, true);
ret = v4l2_ctrl_handler_setup(&xtpg->ctrl_handler);
if (ret < 0) {
dev_err(&pdev->dev, "failed to set controls\n");
goto error;
}
platform_set_drvdata(pdev, xtpg);
xvip_print_version(&xtpg->xvip);
ret = v4l2_async_register_subdev(subdev);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register subdev\n");
goto error;
}
return 0;
error:
v4l2_ctrl_handler_free(&xtpg->ctrl_handler);
media_entity_cleanup(&subdev->entity);
xvtc_put(xtpg->vtc);
error_resource:
xvip_cleanup_resources(&xtpg->xvip);
return ret;
}
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static int xtpg_remove(struct platform_device *pdev)
{
struct xtpg_device *xtpg = platform_get_drvdata(pdev);
struct v4l2_subdev *subdev = &xtpg->xvip.subdev;
v4l2_async_unregister_subdev(subdev);
v4l2_ctrl_handler_free(&xtpg->ctrl_handler);
media_entity_cleanup(&subdev->entity);
xvip_cleanup_resources(&xtpg->xvip);
return 0;
}
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static SIMPLE_DEV_PM_OPS(xtpg_pm_ops, xtpg_pm_suspend, xtpg_pm_resume);
static const struct of_device_id xtpg_of_id_table[] = {
{ .compatible = "xlnx,v-tpg-5.0" },
{ }
};
MODULE_DEVICE_TABLE(of, xtpg_of_id_table);
static struct platform_driver xtpg_driver = {
.driver = {
.name = "xilinx-tpg",
.pm = &xtpg_pm_ops,
.of_match_table = xtpg_of_id_table,
},
.probe = xtpg_probe,
.remove = xtpg_remove,
};
module_platform_driver(xtpg_driver);
MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
MODULE_DESCRIPTION("Xilinx Test Pattern Generator Driver");
MODULE_LICENSE("GPL v2");
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