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Commit 5262eeec authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

[media] es401: convert to the control framework 



Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent f3920f0f

drivers/media/video/gspca/se401.c

+73 −111
Original line number Diff line number Diff line
@@ -45,15 +45,6 @@ MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); 
MODULE_DESCRIPTION("Endpoints se401");

MODULE_LICENSE("GPL");



/* controls */

enum e_ctrl {

	BRIGHTNESS,

	GAIN,

	EXPOSURE,

	FREQ,

	NCTRL	/* number of controls */

};



/* exposure change state machine states */

enum {

	EXPO_CHANGED,
@@ -64,7 +55,11 @@ enum { 
/* specific webcam descriptor */

struct sd {

	struct gspca_dev gspca_dev;	/* !! must be the first item */

	struct gspca_ctrl ctrls[NCTRL];

	struct { /* exposure/freq control cluster */

		struct v4l2_ctrl *exposure;

		struct v4l2_ctrl *freq;

	};

	bool has_brightness;

	struct v4l2_pix_format fmts[MAX_MODES];

	int pixels_read;

	int packet_read;
@@ -77,60 +72,6 @@ struct sd { 
	int expo_change_state;

};



static void setbrightness(struct gspca_dev *gspca_dev);

static void setgain(struct gspca_dev *gspca_dev);

static void setexposure(struct gspca_dev *gspca_dev);



static const struct ctrl sd_ctrls[NCTRL] = {

[BRIGHTNESS] = {

		{

			.id      = V4L2_CID_BRIGHTNESS,

			.type    = V4L2_CTRL_TYPE_INTEGER,

			.name    = "Brightness",

			.minimum = 0,

			.maximum = 255,

			.step    = 1,

			.default_value = 15,

		},

		.set_control = setbrightness

	},

[GAIN] = {

		{

			.id      = V4L2_CID_GAIN,

			.type    = V4L2_CTRL_TYPE_INTEGER,

			.name    = "Gain",

			.minimum = 0,

			.maximum = 50, /* Really 63 but > 50 is not pretty */

			.step    = 1,

			.default_value = 25,

		},

		.set_control = setgain

	},

[EXPOSURE] = {

		{

			.id = V4L2_CID_EXPOSURE,

			.type = V4L2_CTRL_TYPE_INTEGER,

			.name = "Exposure",

			.minimum = 0,

			.maximum = 32767,

			.step = 1,

			.default_value = 15000,

		},

		.set_control = setexposure

	},

[FREQ] = {

		{

			.id	 = V4L2_CID_POWER_LINE_FREQUENCY,

			.type    = V4L2_CTRL_TYPE_MENU,

			.name    = "Light frequency filter",

			.minimum = 0,

			.maximum = 2,

			.step    = 1,

			.default_value = 0,

		},

		.set_control = setexposure

	},

};



static void se401_write_req(struct gspca_dev *gspca_dev, u16 req, u16 value,

			    int silent)
@@ -224,22 +165,15 @@ static int se401_get_feature(struct gspca_dev *gspca_dev, u16 selector) 
	return gspca_dev->usb_buf[0] | (gspca_dev->usb_buf[1] << 8);

}



static void setbrightness(struct gspca_dev *gspca_dev)

static void setbrightness(struct gspca_dev *gspca_dev, s32 val)

{

	struct sd *sd = (struct sd *) gspca_dev;



	if (gspca_dev->ctrl_dis & (1 << BRIGHTNESS))

		return;



	/* HDG: this does not seem to do anything on my cam */

	se401_write_req(gspca_dev, SE401_REQ_SET_BRT,

			sd->ctrls[BRIGHTNESS].val, 0);

	se401_write_req(gspca_dev, SE401_REQ_SET_BRT, val, 0);

}



static void setgain(struct gspca_dev *gspca_dev)

static void setgain(struct gspca_dev *gspca_dev, s32 val)

{

	struct sd *sd = (struct sd *) gspca_dev;

	u16 gain = 63 - sd->ctrls[GAIN].val;

	u16 gain = 63 - val;



	/* red color gain */

	se401_set_feature(gspca_dev, HV7131_REG_ARCG, gain);
@@ -249,10 +183,10 @@ static void setgain(struct gspca_dev *gspca_dev) 
	se401_set_feature(gspca_dev, HV7131_REG_ABCG, gain);

}



static void setexposure(struct gspca_dev *gspca_dev)

static void setexposure(struct gspca_dev *gspca_dev, s32 val, s32 freq)

{

	struct sd *sd = (struct sd *) gspca_dev;

	int integration = sd->ctrls[EXPOSURE].val << 6;

	int integration = val << 6;

	u8 expose_h, expose_m, expose_l;



	/* Do this before the set_feature calls, for proper timing wrt
@@ -262,9 +196,9 @@ static void setexposure(struct gspca_dev *gspca_dev) 
	   through so be it */

	sd->expo_change_state = EXPO_CHANGED;



	if (sd->ctrls[FREQ].val == V4L2_CID_POWER_LINE_FREQUENCY_50HZ)

	if (freq == V4L2_CID_POWER_LINE_FREQUENCY_50HZ)

		integration = integration - integration % 106667;

	if (sd->ctrls[FREQ].val == V4L2_CID_POWER_LINE_FREQUENCY_60HZ)

	if (freq == V4L2_CID_POWER_LINE_FREQUENCY_60HZ)

		integration = integration - integration % 88889;



	expose_h = (integration >> 16);
@@ -375,15 +309,12 @@ static int sd_config(struct gspca_dev *gspca_dev, 
	cam->bulk = 1;

	cam->bulk_size = BULK_SIZE;

	cam->bulk_nurbs = 4;

	cam->ctrls = sd->ctrls;

	sd->resetlevel = 0x2d; /* Set initial resetlevel */



	/* See if the camera supports brightness */

	se401_read_req(gspca_dev, SE401_REQ_GET_BRT, 1);

	if (gspca_dev->usb_err) {

		gspca_dev->ctrl_dis = (1 << BRIGHTNESS);

	sd->has_brightness = !!gspca_dev->usb_err;

	gspca_dev->usb_err = 0;

	}



	return 0;

}
@@ -442,9 +373,7 @@ static int sd_start(struct gspca_dev *gspca_dev) 
	}

	se401_set_feature(gspca_dev, SE401_OPERATINGMODE, mode);



	setbrightness(gspca_dev);

	setgain(gspca_dev);

	setexposure(gspca_dev);

	v4l2_ctrl_handler_setup(&gspca_dev->ctrl_handler);

	se401_set_feature(gspca_dev, HV7131_REG_ARLV, sd->resetlevel);



	sd->packet_read = 0;
@@ -666,27 +595,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len) 
		sd_pkt_scan_janggu(gspca_dev, data, len);

}



static int sd_querymenu(struct gspca_dev *gspca_dev,

			struct v4l2_querymenu *menu)

{

	switch (menu->id) {

	case V4L2_CID_POWER_LINE_FREQUENCY:

		switch (menu->index) {

		case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED:

			strcpy((char *) menu->name, "NoFliker");

			return 0;

		case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:

			strcpy((char *) menu->name, "50 Hz");

			return 0;

		case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:

			strcpy((char *) menu->name, "60 Hz");

			return 0;

		}

		break;

	}

	return -EINVAL;

}



#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)

static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len)

{
@@ -714,19 +622,73 @@ static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len) 
}

#endif



static int sd_s_ctrl(struct v4l2_ctrl *ctrl)

{

	struct gspca_dev *gspca_dev =

		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);

	struct sd *sd = (struct sd *)gspca_dev;



	gspca_dev->usb_err = 0;



	if (!gspca_dev->streaming)

		return 0;



	switch (ctrl->id) {

	case V4L2_CID_BRIGHTNESS:

		setbrightness(gspca_dev, ctrl->val);

		break;

	case V4L2_CID_GAIN:

		setgain(gspca_dev, ctrl->val);

		break;

	case V4L2_CID_EXPOSURE:

		setexposure(gspca_dev, ctrl->val, sd->freq->val);

		break;

	}

	return gspca_dev->usb_err;

}



static const struct v4l2_ctrl_ops sd_ctrl_ops = {

	.s_ctrl = sd_s_ctrl,

};



static int sd_init_controls(struct gspca_dev *gspca_dev)

{

	struct sd *sd = (struct sd *)gspca_dev;

	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;



	gspca_dev->vdev.ctrl_handler = hdl;

	v4l2_ctrl_handler_init(hdl, 4);

	if (sd->has_brightness)

		v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,

			V4L2_CID_BRIGHTNESS, 0, 255, 1, 15);

	/* max is really 63 but > 50 is not pretty */

	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,

			V4L2_CID_GAIN, 0, 50, 1, 25);

	sd->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,

			V4L2_CID_EXPOSURE, 0, 32767, 1, 15000);

	sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,

			V4L2_CID_POWER_LINE_FREQUENCY,

			V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 0);



	if (hdl->error) {

		pr_err("Could not initialize controls\n");

		return hdl->error;

	}

	v4l2_ctrl_cluster(2, &sd->exposure);

	return 0;

}



/* sub-driver description */

static const struct sd_desc sd_desc = {

	.name = MODULE_NAME,

	.ctrls = sd_ctrls,

	.nctrls = ARRAY_SIZE(sd_ctrls),

	.config = sd_config,

	.init = sd_init,

	.init_controls = sd_init_controls,

	.isoc_init = sd_isoc_init,

	.start = sd_start,

	.stopN = sd_stopN,

	.dq_callback = sd_dq_callback,

	.pkt_scan = sd_pkt_scan,

	.querymenu = sd_querymenu,

#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)

	.int_pkt_scan = sd_int_pkt_scan,

#endif