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[media] gspca_pac7311: Convert to the control framework 

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede 2012-05-10 10:52:54 -03:00 committed by Mauro Carvalho Chehab
parent 2421b3dd7c
commit 43f52bf2e0
1 changed files with 108 additions and 126 deletions
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234
drivers/media/video/gspca/pac7311.c
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@ -64,25 +64,21 @@
/* Include pac common sof detection functions */
#include "pac_common.h"
#define PAC7311_GAIN_DEFAULT 122
#define PAC7311_EXPOSURE_DEFAULT 3 /* 20 fps, avoid using high compr. */
MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
MODULE_DESCRIPTION("Pixart PAC7311");
MODULE_LICENSE("GPL");
enum e_ctrl {
CONTRAST,
GAIN,
EXPOSURE,
AUTOGAIN,
HFLIP,
VFLIP,
NCTRLS /* number of controls */
};
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
struct gspca_ctrl ctrls[NCTRLS];
int exp_too_low_cnt;
int exp_too_high_cnt;
struct v4l2_ctrl *contrast;
struct { /* flip cluster */
struct v4l2_ctrl *hflip;
struct v4l2_ctrl *vflip;
};
u8 sof_read;
u8 autogain_ignore_frames;
@ -90,86 +86,6 @@ struct sd {
atomic_t avg_lum;
};
/* V4L2 controls supported by the driver */
static void setcontrast(struct gspca_dev *gspca_dev);
static void setgain(struct gspca_dev *gspca_dev);
static void setexposure(struct gspca_dev *gspca_dev);
static void sethvflip(struct gspca_dev *gspca_dev);
static const struct ctrl sd_ctrls[] = {
[CONTRAST] = {
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 15,
.step = 1,
.default_value = 7,
},
.set_control = setcontrast
},
[GAIN] = {
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = 0,
.maximum = 244,
.step = 1,
.default_value = 122,
},
.set_control = setgain,
},
[EXPOSURE] = {
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
.minimum = 2,
.maximum = 63,
.step = 1,
.default_value = 3, /* 20 fps, avoid using high compr. */
},
.set_control = setexposure,
},
[AUTOGAIN] = {
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Gain",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 1,
},
},
[HFLIP] = {
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mirror",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
.set_control = sethvflip,
},
[VFLIP] = {
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Vflip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
.set_control = sethvflip,
},
};
static const struct v4l2_pix_format vga_mode[] = {
{160, 120, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 160,
@ -371,45 +287,36 @@ static void reg_w_var(struct gspca_dev *gspca_dev,
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (struct sd *) gspca_dev;
struct cam *cam = &gspca_dev->cam;
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);
gspca_dev->cam.ctrls = sd->ctrls;
return 0;
}
static void setcontrast(struct gspca_dev *gspca_dev)
static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x04);
reg_w(gspca_dev, 0x10, sd->ctrls[CONTRAST].val);
reg_w(gspca_dev, 0x10, val);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
}
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;
reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
reg_w(gspca_dev, 0x0e, 0x00);
reg_w(gspca_dev, 0x0f, sd->ctrls[GAIN].max - sd->ctrls[GAIN].val + 1);
reg_w(gspca_dev, 0x0f, gspca_dev->gain->maximum - val + 1);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
}
static void setexposure(struct gspca_dev *gspca_dev)
static void setexposure(struct gspca_dev *gspca_dev, s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
reg_w(gspca_dev, 0x02, sd->ctrls[EXPOSURE].val);
reg_w(gspca_dev, 0x02, val);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
@ -419,7 +326,7 @@ static void setexposure(struct gspca_dev *gspca_dev)
* 640x480 mode and page 4 reg 2 <= 3 then it must be 9
*/
reg_w(gspca_dev, 0xff, 0x01);
if (gspca_dev->width != 640 && sd->ctrls[EXPOSURE].val <= 3)
if (gspca_dev->width != 640 && val <= 3)
reg_w(gspca_dev, 0x08, 0x09);
else
reg_w(gspca_dev, 0x08, 0x08);
@ -430,7 +337,7 @@ static void setexposure(struct gspca_dev *gspca_dev)
* camera to use higher compression or we may run out of
* bandwidth.
*/
if (gspca_dev->width == 640 && sd->ctrls[EXPOSURE].val == 2)
if (gspca_dev->width == 640 && val == 2)
reg_w(gspca_dev, 0x80, 0x01);
else
reg_w(gspca_dev, 0x80, 0x1c);
@ -439,14 +346,13 @@ static void setexposure(struct gspca_dev *gspca_dev)
reg_w(gspca_dev, 0x11, 0x01);
}
static void sethvflip(struct gspca_dev *gspca_dev)
static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip)
{
struct sd *sd = (struct sd *) gspca_dev;
__u8 data;
reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
data = (sd->ctrls[HFLIP].val ? 0x04 : 0x00) |
(sd->ctrls[VFLIP].val ? 0x08 : 0x00);
data = (hflip ? 0x04 : 0x00) |
(vflip ? 0x08 : 0x00);
reg_w(gspca_dev, 0x21, data);
/* load registers to sensor (Bit 0, auto clear) */
@ -460,6 +366,85 @@ static int sd_init(struct gspca_dev *gspca_dev)
return gspca_dev->usb_err;
}
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 (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
/* when switching to autogain set defaults to make sure
we are on a valid point of the autogain gain /
exposure knee graph, and give this change time to
take effect before doing autogain. */
gspca_dev->exposure->val = PAC7311_EXPOSURE_DEFAULT;
gspca_dev->gain->val = PAC7311_GAIN_DEFAULT;
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
}
if (!gspca_dev->streaming)
return 0;
switch (ctrl->id) {
case V4L2_CID_CONTRAST:
setcontrast(gspca_dev, ctrl->val);
break;
case V4L2_CID_AUTOGAIN:
if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
setexposure(gspca_dev, gspca_dev->exposure->val);
if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
setgain(gspca_dev, gspca_dev->gain->val);
break;
case V4L2_CID_HFLIP:
sethvflip(gspca_dev, sd->hflip->val, sd->vflip->val);
break;
default:
return -EINVAL;
}
return gspca_dev->usb_err;
}
static const struct v4l2_ctrl_ops sd_ctrl_ops = {
.s_ctrl = sd_s_ctrl,
};
/* this function is called at probe time */
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);
sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_CONTRAST, 0, 15, 1, 7);
gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_EXPOSURE, 2, 63, 1,
PAC7311_EXPOSURE_DEFAULT);
gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_GAIN, 0, 244, 1,
PAC7311_GAIN_DEFAULT);
sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
if (hdl->error) {
pr_err("Could not initialize controls\n");
return hdl->error;
}
v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
v4l2_ctrl_cluster(2, &sd->hflip);
return 0;
}
/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
@ -468,10 +453,11 @@ static int sd_start(struct gspca_dev *gspca_dev)
reg_w_var(gspca_dev, start_7311,
page4_7311, sizeof(page4_7311));
setcontrast(gspca_dev);
setgain(gspca_dev);
setexposure(gspca_dev);
sethvflip(gspca_dev);
setcontrast(gspca_dev, v4l2_ctrl_g_ctrl(sd->contrast));
setgain(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->gain));
setexposure(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->exposure));
sethvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip),
v4l2_ctrl_g_ctrl(sd->vflip));
/* set correct resolution */
switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
@ -517,16 +503,13 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
}
#define WANT_COARSE_EXPO_AUTOGAIN
#include "autogain_functions.h"
static void do_autogain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int avg_lum = atomic_read(&sd->avg_lum);
int desired_lum, deadzone;
if (sd->ctrls[AUTOGAIN].val == 0 || avg_lum == -1)
if (avg_lum == -1)
return;
desired_lum = 200;
@ -534,8 +517,8 @@ static void do_autogain(struct gspca_dev *gspca_dev)
if (sd->autogain_ignore_frames > 0)
sd->autogain_ignore_frames--;
else if (coarse_grained_expo_autogain(gspca_dev, avg_lum, desired_lum,
deadzone))
else if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
desired_lum, deadzone))
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
}
@ -674,10 +657,9 @@ static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
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,
.start = sd_start,
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,