@@ -228,8 +228,12 @@ Common FPDL3/GMSL output parameters
open.*
**frame_rate** (RW):
- Output video frame rate in frames per second. The default frame rate is
- 60Hz.
+ Output video signal frame rate limit. Due to the limited output pixel clock
+ steps, the card can not always generate a frame rate perfectly matching
+ the value required by the connected display. Using this parameter one can
+ limit the frame rate by "crippling" the signal so that the lines are not
+ equal but the signal appears like having the exact frame rate to
+ the connected display. The default frame rate limit value is 60Hz.
**hsync_polarity** (RW):
HSYNC signal polarity.
@@ -302,7 +302,7 @@ static int init_i2c(struct mgb4_dev *mgbdev)
/* create dummy clock required by the xiic-i2c adapter */
snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id);
mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL,
- 0, 125000000);
+ 0, MGB4_HW_FREQ);
if (IS_ERR(mgbdev->i2c_clk)) {
dev_err(dev, "failed to register I2C clock\n");
return PTR_ERR(mgbdev->i2c_clk);
@@ -13,6 +13,8 @@
#include <linux/dmaengine.h>
#include "mgb4_regs.h"
+#define MGB4_HW_FREQ 125000000
+
#define MGB4_VIN_DEVICES 2
#define MGB4_VOUT_DEVICES 2
@@ -8,10 +8,7 @@
#define __MGB4_IO_H__
#include <media/v4l2-dev.h>
-
-#define MGB4_DEFAULT_WIDTH 1280
-#define MGB4_DEFAULT_HEIGHT 640
-#define MGB4_DEFAULT_PERIOD (125000000 / 60)
+#include "mgb4_core.h"
/* Register access error indication */
#define MGB4_ERR_NO_REG 0xFFFFFFFE
@@ -20,6 +17,9 @@
#define MGB4_ERR_QUEUE_EMPTY 0xFFFFFFFC
#define MGB4_ERR_QUEUE_FULL 0xFFFFFFFB
+#define MGB4_PERIOD(numerator, denominator) \
+ ((u32)((MGB4_HW_FREQ * (u64)(numerator)) / (u64)(denominator)))
+
struct mgb4_frame_buffer {
struct vb2_v4l2_buffer vb;
struct list_head list;
@@ -30,11 +30,24 @@ static inline struct mgb4_frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer *
return container_of(vbuf, struct mgb4_frame_buffer, vb);
}
-static inline bool has_yuv(struct mgb4_regs *video)
+static inline bool has_yuv_and_timeperframe(struct mgb4_regs *video)
{
u32 status = mgb4_read_reg(video, 0xD0);
return (status & (1U << 8));
}
+#define has_yuv(video) has_yuv_and_timeperframe(video)
+#define has_timeperframe(video) has_yuv_and_timeperframe(video)
+
+static inline u32 pixel_size(struct v4l2_dv_timings *timings)
+{
+ struct v4l2_bt_timings *bt = &timings->bt;
+
+ u32 height = bt->height + bt->vfrontporch + bt->vsync + bt->vbackporch;
+ u32 width = bt->width + bt->hfrontporch + bt->hsync + bt->hbackporch;
+
+ return width * height;
+}
+
#endif
@@ -229,9 +229,12 @@ static ssize_t frame_rate_show(struct device *dev,
struct video_device *vdev = to_video_device(dev);
struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev);
u32 period = mgb4_read_reg(&voutdev->mgbdev->video,
- voutdev->config->regs.frame_period);
+ voutdev->config->regs.frame_limit);
- return sprintf(buf, "%u\n", 125000000 / period);
+ if (!period)
+ return -EIO;
+
+ return sprintf(buf, "%u\n", MGB4_HW_FREQ / period);
}
/*
@@ -252,7 +255,7 @@ static ssize_t frame_rate_store(struct device *dev,
return ret;
mgb4_write_reg(&voutdev->mgbdev->video,
- voutdev->config->regs.frame_period, 125000000 / val);
+ voutdev->config->regs.frame_limit, MGB4_HW_FREQ / val);
return count;
}
@@ -34,8 +34,8 @@ ATTRIBUTE_GROUPS(mgb4_fpdl3_in);
ATTRIBUTE_GROUPS(mgb4_gmsl_in);
static const struct mgb4_vin_config vin_cfg[] = {
- {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28}},
- {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58}}
+ {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28, 0xE8}},
+ {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58, 0xEC}}
};
static const struct i2c_board_info fpdl3_deser_info[] = {
@@ -387,6 +387,7 @@ static int vidioc_enum_frameintervals(struct file *file, void *priv,
{
struct mgb4_vin_dev *vindev = video_drvdata(file);
struct mgb4_regs *video = &vindev->mgbdev->video;
+ struct v4l2_dv_timings timings;
if (ival->index != 0)
return -EINVAL;
@@ -397,12 +398,15 @@ static int vidioc_enum_frameintervals(struct file *file, void *priv,
ival->height != vindev->timings.bt.height)
return -EINVAL;
- ival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
- ival->stepwise.min.denominator = 60;
- ival->stepwise.min.numerator = 1;
- ival->stepwise.max.denominator = 1;
- ival->stepwise.max.numerator = 1;
- ival->stepwise.step = ival->stepwise.max;
+ get_timings(vindev, &timings);
+
+ ival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
+ ival->stepwise.max.denominator = MGB4_HW_FREQ;
+ ival->stepwise.max.numerator = 0xFFFFFFFF;
+ ival->stepwise.min.denominator = timings.bt.pixelclock;
+ ival->stepwise.min.numerator = pixel_size(&timings);
+ ival->stepwise.step.denominator = MGB4_HW_FREQ;
+ ival->stepwise.step.numerator = 1;
return 0;
}
@@ -570,27 +574,66 @@ static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
return 0;
}
-static int vidioc_parm(struct file *file, void *priv,
- struct v4l2_streamparm *parm)
+static int vidioc_g_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
{
struct mgb4_vin_dev *vindev = video_drvdata(file);
struct mgb4_regs *video = &vindev->mgbdev->video;
- const struct mgb4_vin_regs *regs = &vindev->config->regs;
- struct v4l2_fract timeperframe = {
- .numerator = mgb4_read_reg(video, regs->frame_period),
- .denominator = 125000000,
- };
+ struct v4l2_fract *tpf = &parm->parm.output.timeperframe;
+ struct v4l2_dv_timings timings;
+ u32 timer;
if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
parm->parm.capture.readbuffers = 2;
- parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
- parm->parm.capture.timeperframe = timeperframe;
+
+ if (has_timeperframe(video)) {
+ timer = mgb4_read_reg(video, vindev->config->regs.timer);
+ if (timer < 0xFFFF) {
+ get_timings(vindev, &timings);
+ tpf->numerator = pixel_size(&timings);
+ tpf->denominator = timings.bt.pixelclock;
+ } else {
+ tpf->numerator = timer;
+ tpf->denominator = MGB4_HW_FREQ;
+ }
+
+ parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
+ }
return 0;
}
+static int vidioc_s_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct mgb4_vin_dev *vindev = video_drvdata(file);
+ struct mgb4_regs *video = &vindev->mgbdev->video;
+ struct v4l2_fract *tpf = &parm->parm.output.timeperframe;
+ struct v4l2_dv_timings timings;
+ u32 period, timer;
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ if (has_timeperframe(video)) {
+ timer = tpf->denominator ?
+ MGB4_PERIOD(tpf->numerator, tpf->denominator) : 0;
+ if (timer) {
+ get_timings(vindev, &timings);
+ period = MGB4_PERIOD(pixel_size(&timings),
+ timings.bt.pixelclock);
+ if (timer < period)
+ timer = 0;
+ }
+
+ mgb4_write_reg(video, vindev->config->regs.timer, timer);
+ }
+
+ return vidioc_g_parm(file, priv, parm);
+}
+
static int vidioc_s_dv_timings(struct file *file, void *fh,
struct v4l2_dv_timings *timings)
{
@@ -674,8 +717,8 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
- .vidioc_g_parm = vidioc_parm,
- .vidioc_s_parm = vidioc_parm,
+ .vidioc_g_parm = vidioc_g_parm,
+ .vidioc_s_parm = vidioc_s_parm,
.vidioc_dv_timings_cap = vidioc_dv_timings_cap,
.vidioc_enum_dv_timings = vidioc_enum_dv_timings,
.vidioc_g_dv_timings = vidioc_g_dv_timings,
@@ -858,10 +901,16 @@ static void debugfs_init(struct mgb4_vin_dev *vindev)
vindev->regs[7].offset = vindev->config->regs.signal2;
vindev->regs[8].name = "PADDING_PIXELS";
vindev->regs[8].offset = vindev->config->regs.padding;
+ if (has_timeperframe(video)) {
+ vindev->regs[9].name = "TIMER";
+ vindev->regs[9].offset = vindev->config->regs.timer;
+ vindev->regset.nregs = 10;
+ } else {
+ vindev->regset.nregs = 9;
+ }
vindev->regset.base = video->membase;
vindev->regset.regs = vindev->regs;
- vindev->regset.nregs = ARRAY_SIZE(vindev->regs);
debugfs_create_regset32("registers", 0444, vindev->debugfs,
&vindev->regset);
@@ -25,6 +25,7 @@ struct mgb4_vin_regs {
u32 signal;
u32 signal2;
u32 padding;
+ u32 timer;
};
struct mgb4_vin_config {
@@ -59,7 +60,7 @@ struct mgb4_vin_dev {
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs;
struct debugfs_regset32 regset;
- struct debugfs_reg32 regs[9];
+ struct debugfs_reg32 regs[sizeof(struct mgb4_vin_regs) / 4];
#endif
};
@@ -16,6 +16,7 @@
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-sg.h>
+#include <media/v4l2-dv-timings.h>
#include "mgb4_core.h"
#include "mgb4_dma.h"
#include "mgb4_sysfs.h"
@@ -23,12 +24,16 @@
#include "mgb4_cmt.h"
#include "mgb4_vout.h"
+#define DEFAULT_WIDTH 1280
+#define DEFAULT_HEIGHT 640
+#define DEFAULT_LIMIT (MGB4_HW_FREQ / 60)
+
ATTRIBUTE_GROUPS(mgb4_fpdl3_out);
ATTRIBUTE_GROUPS(mgb4_gmsl_out);
static const struct mgb4_vout_config vout_cfg[] = {
- {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7c}},
- {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8c, 0x90, 0x9c}}
+ {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7C, 0xE0}},
+ {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8C, 0x90, 0x9C, 0xE4}}
};
static const struct i2c_board_info fpdl3_ser_info[] = {
@@ -40,6 +45,49 @@ static const struct mgb4_i2c_kv fpdl3_i2c[] = {
{0x05, 0xFF, 0x04}, {0x06, 0xFF, 0x01}, {0xC2, 0xFF, 0x80}
};
+static const struct v4l2_dv_timings_cap video_timings_cap = {
+ .type = V4L2_DV_BT_656_1120,
+ .bt = {
+ .min_width = 320,
+ .max_width = 4096,
+ .min_height = 240,
+ .max_height = 2160,
+ .min_pixelclock = 1843200, /* 320 x 240 x 24Hz */
+ .max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */
+ .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
+ V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF,
+ .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE |
+ V4L2_DV_BT_CAP_CUSTOM,
+ },
+};
+
+static void get_timings(struct mgb4_vout_dev *voutdev,
+ struct v4l2_dv_timings *timings)
+{
+ struct mgb4_regs *video = &voutdev->mgbdev->video;
+ const struct mgb4_vout_regs *regs = &voutdev->config->regs;
+
+ u32 hsync = mgb4_read_reg(video, regs->hsync);
+ u32 vsync = mgb4_read_reg(video, regs->vsync);
+ u32 resolution = mgb4_read_reg(video, regs->resolution);
+
+ memset(timings, 0, sizeof(*timings));
+ timings->type = V4L2_DV_BT_656_1120;
+ timings->bt.width = resolution >> 16;
+ timings->bt.height = resolution & 0xFFFF;
+ if (hsync & (1U << 31))
+ timings->bt.polarities |= V4L2_DV_HSYNC_POS_POL;
+ if (vsync & (1U << 31))
+ timings->bt.polarities |= V4L2_DV_VSYNC_POS_POL;
+ timings->bt.pixelclock = voutdev->freq * 1000;
+ timings->bt.hsync = (hsync & 0x00FF0000) >> 16;
+ timings->bt.vsync = (vsync & 0x00FF0000) >> 16;
+ timings->bt.hbackporch = (hsync & 0x0000FF00) >> 8;
+ timings->bt.hfrontporch = hsync & 0x000000FF;
+ timings->bt.vbackporch = (vsync & 0x0000FF00) >> 8;
+ timings->bt.vfrontporch = vsync & 0x000000FF;
+}
+
static void return_all_buffers(struct mgb4_vout_dev *voutdev,
enum vb2_buffer_state state)
{
@@ -345,11 +393,134 @@ static int vidioc_enum_output(struct file *file, void *priv,
return -EINVAL;
out->type = V4L2_OUTPUT_TYPE_ANALOG;
+ out->capabilities = V4L2_OUT_CAP_DV_TIMINGS;
strscpy(out->name, "MGB4", sizeof(out->name));
return 0;
}
+static int vidioc_enum_frameintervals(struct file *file, void *priv,
+ struct v4l2_frmivalenum *ival)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+ struct mgb4_regs *video = &voutdev->mgbdev->video;
+ struct v4l2_dv_timings timings;
+
+ if (ival->index != 0)
+ return -EINVAL;
+ if (!(ival->pixel_format == V4L2_PIX_FMT_ABGR32 ||
+ ((has_yuv(video) && ival->pixel_format == V4L2_PIX_FMT_YUYV))))
+ return -EINVAL;
+ if (ival->width != voutdev->width || ival->height != voutdev->height)
+ return -EINVAL;
+
+ get_timings(voutdev, &timings);
+
+ ival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
+ ival->stepwise.max.denominator = MGB4_HW_FREQ;
+ ival->stepwise.max.numerator = 0xFFFFFFFF;
+ ival->stepwise.min.denominator = timings.bt.pixelclock;
+ ival->stepwise.min.numerator = pixel_size(&timings);
+ ival->stepwise.step.denominator = MGB4_HW_FREQ;
+ ival->stepwise.step.numerator = 1;
+
+ return 0;
+}
+
+static int vidioc_g_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+ struct mgb4_regs *video = &voutdev->mgbdev->video;
+ struct v4l2_fract *tpf = &parm->parm.output.timeperframe;
+ struct v4l2_dv_timings timings;
+ u32 timer;
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+
+ parm->parm.output.writebuffers = 2;
+
+ if (has_timeperframe(video)) {
+ timer = mgb4_read_reg(video, voutdev->config->regs.timer);
+ if (timer < 0xFFFF) {
+ get_timings(voutdev, &timings);
+ tpf->numerator = pixel_size(&timings);
+ tpf->denominator = timings.bt.pixelclock;
+ } else {
+ tpf->numerator = timer;
+ tpf->denominator = MGB4_HW_FREQ;
+ }
+
+ parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
+ }
+
+ return 0;
+}
+
+static int vidioc_s_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+ struct mgb4_regs *video = &voutdev->mgbdev->video;
+ struct v4l2_fract *tpf = &parm->parm.output.timeperframe;
+ struct v4l2_dv_timings timings;
+ u32 timer, period;
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ return -EINVAL;
+
+ if (has_timeperframe(video)) {
+ timer = tpf->denominator ?
+ MGB4_PERIOD(tpf->numerator, tpf->denominator) : 0;
+ if (timer) {
+ get_timings(voutdev, &timings);
+ period = MGB4_PERIOD(pixel_size(&timings),
+ timings.bt.pixelclock);
+ if (timer < period)
+ timer = 0;
+ }
+
+ mgb4_write_reg(video, voutdev->config->regs.timer, timer);
+ }
+
+ return vidioc_g_parm(file, priv, parm);
+}
+
+static int vidioc_g_dv_timings(struct file *file, void *fh,
+ struct v4l2_dv_timings *timings)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+
+ get_timings(voutdev, timings);
+
+ return 0;
+}
+
+static int vidioc_s_dv_timings(struct file *file, void *fh,
+ struct v4l2_dv_timings *timings)
+{
+ struct mgb4_vout_dev *voutdev = video_drvdata(file);
+
+ get_timings(voutdev, timings);
+
+ return 0;
+}
+
+static int vidioc_enum_dv_timings(struct file *file, void *fh,
+ struct v4l2_enum_dv_timings *timings)
+{
+ return v4l2_enum_dv_timings_cap(timings, &video_timings_cap, NULL, NULL);
+}
+
+static int vidioc_dv_timings_cap(struct file *file, void *fh,
+ struct v4l2_dv_timings_cap *cap)
+{
+ *cap = video_timings_cap;
+
+ return 0;
+}
+
static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_out = vidioc_enum_fmt,
@@ -357,8 +528,15 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_s_fmt_vid_out = vidioc_s_fmt,
.vidioc_g_fmt_vid_out = vidioc_g_fmt,
.vidioc_enum_output = vidioc_enum_output,
+ .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
.vidioc_g_output = vidioc_g_output,
.vidioc_s_output = vidioc_s_output,
+ .vidioc_g_parm = vidioc_g_parm,
+ .vidioc_s_parm = vidioc_s_parm,
+ .vidioc_dv_timings_cap = vidioc_dv_timings_cap,
+ .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
+ .vidioc_g_dv_timings = vidioc_g_dv_timings,
+ .vidioc_s_dv_timings = vidioc_s_dv_timings,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
@@ -501,13 +679,13 @@ static void fpga_init(struct mgb4_vout_dev *voutdev)
mgb4_write_reg(video, regs->config, 0x00000011);
mgb4_write_reg(video, regs->resolution,
- (MGB4_DEFAULT_WIDTH << 16) | MGB4_DEFAULT_HEIGHT);
- mgb4_write_reg(video, regs->hsync, 0x00102020);
- mgb4_write_reg(video, regs->vsync, 0x40020202);
- mgb4_write_reg(video, regs->frame_period, MGB4_DEFAULT_PERIOD);
+ (DEFAULT_WIDTH << 16) | DEFAULT_HEIGHT);
+ mgb4_write_reg(video, regs->hsync, 0x00283232);
+ mgb4_write_reg(video, regs->vsync, 0x40141F1E);
+ mgb4_write_reg(video, regs->frame_limit, DEFAULT_LIMIT);
mgb4_write_reg(video, regs->padding, 0x00000000);
- voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 70000 >> 1) << 1;
+ voutdev->freq = mgb4_cmt_set_vout_freq(voutdev, 61150 >> 1) << 1;
mgb4_write_reg(video, regs->config,
(voutdev->config->id + MGB4_VIN_DEVICES) << 2 | 1 << 4);
@@ -533,14 +711,20 @@ static void debugfs_init(struct mgb4_vout_dev *voutdev)
voutdev->regs[3].offset = voutdev->config->regs.hsync;
voutdev->regs[4].name = "VIDEO_PARAMS_2";
voutdev->regs[4].offset = voutdev->config->regs.vsync;
- voutdev->regs[5].name = "FRAME_PERIOD";
- voutdev->regs[5].offset = voutdev->config->regs.frame_period;
- voutdev->regs[6].name = "PADDING";
+ voutdev->regs[5].name = "FRAME_LIMIT";
+ voutdev->regs[5].offset = voutdev->config->regs.frame_limit;
+ voutdev->regs[6].name = "PADDING_PIXELS";
voutdev->regs[6].offset = voutdev->config->regs.padding;
+ if (has_timeperframe(video)) {
+ voutdev->regs[7].name = "TIMER";
+ voutdev->regs[7].offset = voutdev->config->regs.timer;
+ voutdev->regset.nregs = 8;
+ } else {
+ voutdev->regset.nregs = 7;
+ }
voutdev->regset.base = video->membase;
voutdev->regset.regs = voutdev->regs;
- voutdev->regset.nregs = ARRAY_SIZE(voutdev->regs);
debugfs_create_regset32("registers", 0444, voutdev->debugfs,
&voutdev->regset);
@@ -19,10 +19,11 @@ struct mgb4_vout_regs {
u32 config;
u32 status;
u32 resolution;
- u32 frame_period;
+ u32 frame_limit;
u32 hsync;
u32 vsync;
u32 padding;
+ u32 timer;
};
struct mgb4_vout_config {
@@ -55,7 +56,7 @@ struct mgb4_vout_dev {
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs;
struct debugfs_regset32 regset;
- struct debugfs_reg32 regs[7];
+ struct debugfs_reg32 regs[sizeof(struct mgb4_vout_regs) / 4];
#endif
};