From 1dc7f8632084630ef1289d688a85629fbc39d059 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 13 Jul 2009 01:03:37 -0300 Subject: mt9v011: implement VIDIOC_QUERYCTRL From: Mauro Carvalho Chehab Priority: normal Signed-off-by: Mauro Carvalho Chehab --- linux/drivers/media/video/mt9v011.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'linux/drivers/media/video/mt9v011.c') diff --git a/linux/drivers/media/video/mt9v011.c b/linux/drivers/media/video/mt9v011.c index 505529e3e..947a23ac0 100644 --- a/linux/drivers/media/video/mt9v011.c +++ b/linux/drivers/media/video/mt9v011.c @@ -225,6 +225,23 @@ static int mt9v011_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) return -EINVAL; } +static int mt9v011_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) +{ + int i; + + v4l2_dbg(1, debug, sd, "queryctrl called\n"); + + for (i = 0; i < ARRAY_SIZE(mt9v011_qctrl); i++) + if (qc->id && qc->id == mt9v011_qctrl[i].id) { + memcpy(qc, &(mt9v011_qctrl[i]), + sizeof(*qc)); + return 0; + } + + return -EINVAL; +} + + static int mt9v011_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) { struct mt9v011 *core = to_mt9v011(sd); @@ -348,6 +365,7 @@ static int mt9v011_g_chip_ident(struct v4l2_subdev *sd, } static const struct v4l2_subdev_core_ops mt9v011_core_ops = { + .queryctrl = mt9v011_queryctrl, .g_ctrl = mt9v011_g_ctrl, .s_ctrl = mt9v011_s_ctrl, .reset = mt9v011_reset, -- cgit v1.2.3 From 3c16945bd290ac09d7aa8a70c69d8f359eb53a09 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 14 Jul 2009 02:38:18 -0300 Subject: mt9v011: add a function to calculate frames per second rate From: Mauro Carvalho Chehab It is possible to adjust the fps rate by changing some register values. This is function of the connected Xtal at the camera sensor, being a 27 MHz cristal needed, in order to support 640x480 at 30 fps. For now, it will only calculate the values for fps. Later patches may introduce V4L2 ioctls, to allow frequency rate adjustments. Priority: normal Signed-off-by: Mauro Carvalho Chehab --- linux/drivers/media/video/mt9v011.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) (limited to 'linux/drivers/media/video/mt9v011.c') diff --git a/linux/drivers/media/video/mt9v011.c b/linux/drivers/media/video/mt9v011.c index 947a23ac0..43420d311 100644 --- a/linux/drivers/media/video/mt9v011.c +++ b/linux/drivers/media/video/mt9v011.c @@ -9,6 +9,7 @@ #include "compat.h" #include #include +#include #include #include "mt9v011.h" #include @@ -67,6 +68,7 @@ static struct v4l2_queryctrl mt9v011_qctrl[] = { struct mt9v011 { struct v4l2_subdev sd; unsigned width, height; + unsigned xtal; u16 global_gain, red_bal, blue_bal; }; @@ -141,7 +143,7 @@ static const struct i2c_reg_value mt9v011_init_default[] = { { R1E_MT9V011_DIGITAL_ZOOM, 0x0000 }, { R20_MT9V011_READ_MODE, 0x1000 }, - { R07_MT9V011_OUT_CTRL, 0x000a }, /* chip enable */ + { R07_MT9V011_OUT_CTRL, 0x0002 }, /* chip enable */ }; static void set_balance(struct v4l2_subdev *sd) @@ -164,6 +166,31 @@ static void set_balance(struct v4l2_subdev *sd) mt9v011_write(sd, R2D_MT9V011_RED_GAIN, red_gain); } +static void calc_fps(struct v4l2_subdev *sd) +{ + struct mt9v011 *core = to_mt9v011(sd); + unsigned height, width, hblank, vblank, speed; + unsigned row_time, t_time; + u64 frames_per_ms; + unsigned tmp; + + height = mt9v011_read(sd, R03_MT9V011_HEIGHT); + width = mt9v011_read(sd, R04_MT9V011_WIDTH); + hblank = mt9v011_read(sd, R05_MT9V011_HBLANK); + vblank = mt9v011_read(sd, R06_MT9V011_VBLANK); + speed = mt9v011_read(sd, R0A_MT9V011_CLK_SPEED); + + row_time = (width + 113 + hblank) * (speed + 2); + t_time = row_time * (height + vblank + 1); + + frames_per_ms = core->xtal * 1000l; + do_div(frames_per_ms, t_time); + tmp = frames_per_ms; + + v4l2_dbg(1, debug, sd, "Programmed to %u.%03u fps (%d pixel clcks)\n", + tmp / 1000, tmp % 1000, t_time); +} + static void set_res(struct v4l2_subdev *sd) { struct mt9v011 *core = to_mt9v011(sd); @@ -189,6 +216,8 @@ static void set_res(struct v4l2_subdev *sd) mt9v011_write(sd, R01_MT9V011_ROWSTART, vstart); mt9v011_write(sd, R03_MT9V011_HEIGHT, core->height); mt9v011_write(sd, R06_MT9V011_VBLANK, 508 - core->height); + + calc_fps(sd); }; static int mt9v011_reset(struct v4l2_subdev *sd, u32 val) @@ -423,6 +452,7 @@ static int mt9v011_probe(struct i2c_client *c, core->global_gain = 0x0024; core->width = 640; core->height = 480; + core->xtal = 27000000; /* Hz */ v4l_info(c, "chip found @ 0x%02x (%s)\n", c->addr << 1, c->adapter->name); -- cgit v1.2.3 From bd8a28419f128638347a77d46de11461f0c17fd6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 14 Jul 2009 02:39:19 -0300 Subject: mt9v011: Fix vstart From: Mauro Carvalho Chehab vstart calculus were wrong. Fix it. Priority: normal Signed-off-by: Mauro Carvalho Chehab --- linux/drivers/media/video/mt9v011.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'linux/drivers/media/video/mt9v011.c') diff --git a/linux/drivers/media/video/mt9v011.c b/linux/drivers/media/video/mt9v011.c index 43420d311..46b5a3cf5 100644 --- a/linux/drivers/media/video/mt9v011.c +++ b/linux/drivers/media/video/mt9v011.c @@ -212,7 +212,7 @@ static void set_res(struct v4l2_subdev *sd) mt9v011_write(sd, R04_MT9V011_WIDTH, core->width); mt9v011_write(sd, R05_MT9V011_HBLANK, 771 - core->width); - vstart = 8 + (640 - core->height) / 2; + vstart = 8 + (480 - core->height) / 2; mt9v011_write(sd, R01_MT9V011_ROWSTART, vstart); mt9v011_write(sd, R03_MT9V011_HEIGHT, core->height); mt9v011_write(sd, R06_MT9V011_VBLANK, 508 - core->height); -- cgit v1.2.3 From a8d41efd6cd091346a1276f0c7d818874b10bc36 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 14 Jul 2009 03:14:21 -0300 Subject: mt9v011: implement core->s_config to allow adjusting xtal frequency From: Mauro Carvalho Chehab Since frames per second is a function of cristal frequency, and this is device-specific, add a function that allows adjusting it, via subdev->core->s_config callback. Signed-off-by: Mauro Carvalho Chehab --- linux/drivers/media/video/mt9v011.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'linux/drivers/media/video/mt9v011.c') diff --git a/linux/drivers/media/video/mt9v011.c b/linux/drivers/media/video/mt9v011.c index 46b5a3cf5..bf68ea63f 100644 --- a/linux/drivers/media/video/mt9v011.c +++ b/linux/drivers/media/video/mt9v011.c @@ -350,6 +350,22 @@ static int mt9v011_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt) return 0; } +static int mt9v011_s_config(struct v4l2_subdev *sd, int dumb, void *data) +{ + struct mt9v011 *core = to_mt9v011(sd); + unsigned *xtal = data; + + v4l2_dbg(1, debug, sd, "s_config called\n"); + + if (xtal) { + core->xtal = *xtal; + v4l2_dbg(1, debug, sd, "xtal set to %d.%03d MHz\n", + *xtal / 1000000, (*xtal / 1000) % 1000); + } + + return 0; +} + #ifdef CONFIG_VIDEO_ADV_DEBUG static int mt9v011_g_register(struct v4l2_subdev *sd, @@ -398,6 +414,7 @@ static const struct v4l2_subdev_core_ops mt9v011_core_ops = { .g_ctrl = mt9v011_g_ctrl, .s_ctrl = mt9v011_s_ctrl, .reset = mt9v011_reset, + .s_config = mt9v011_s_config, .g_chip_ident = mt9v011_g_chip_ident, #ifdef CONFIG_VIDEO_ADV_DEBUG .g_register = mt9v011_g_register, -- cgit v1.2.3