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[media] bt819: use control framework 

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2010-12-12 08:19:41 -03:00 committed by Mauro Carvalho Chehab
parent ceed52d67e
commit bd84a65aef
1 changed files with 49 additions and 80 deletions
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129
drivers/media/video/bt819.c
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@ -37,6 +37,7 @@
#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-ctrls.h>
#include <media/bt819.h>
MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
@ -52,16 +53,13 @@ MODULE_PARM_DESC(debug, "Debug level (0-1)");
struct bt819 {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
unsigned char reg[32];
v4l2_std_id norm;
int ident;
int input;
int enable;
int bright;
int contrast;
int hue;
int sat;
};
static inline struct bt819 *to_bt819(struct v4l2_subdev *sd)
@ -69,6 +67,11 @@ static inline struct bt819 *to_bt819(struct v4l2_subdev *sd)
return container_of(sd, struct bt819, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct bt819, hdl)->sd;
}
struct timing {
int hactive;
int hdelay;
@ -333,71 +336,35 @@ static int bt819_s_stream(struct v4l2_subdev *sd, int enable)
return 0;
}
static int bt819_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
switch (qc->id) {
case V4L2_CID_BRIGHTNESS:
v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
break;
case V4L2_CID_CONTRAST:
v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
break;
case V4L2_CID_SATURATION:
v4l2_ctrl_query_fill(qc, 0, 511, 1, 256);
break;
case V4L2_CID_HUE:
v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
break;
default:
return -EINVAL;
}
return 0;
}
static int bt819_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
static int bt819_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
struct bt819 *decoder = to_bt819(sd);
int temp;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
if (decoder->bright == ctrl->value)
break;
decoder->bright = ctrl->value;
bt819_write(decoder, 0x0a, decoder->bright);
bt819_write(decoder, 0x0a, ctrl->val);
break;
case V4L2_CID_CONTRAST:
if (decoder->contrast == ctrl->value)
break;
decoder->contrast = ctrl->value;
bt819_write(decoder, 0x0c, decoder->contrast & 0xff);
bt819_setbit(decoder, 0x0b, 2, ((decoder->contrast >> 8) & 0x01));
bt819_write(decoder, 0x0c, ctrl->val & 0xff);
bt819_setbit(decoder, 0x0b, 2, ((ctrl->val >> 8) & 0x01));
break;
case V4L2_CID_SATURATION:
if (decoder->sat == ctrl->value)
break;
decoder->sat = ctrl->value;
bt819_write(decoder, 0x0d, (decoder->sat >> 7) & 0xff);
bt819_setbit(decoder, 0x0b, 1, ((decoder->sat >> 15) & 0x01));
bt819_write(decoder, 0x0d, (ctrl->val >> 7) & 0xff);
bt819_setbit(decoder, 0x0b, 1, ((ctrl->val >> 15) & 0x01));
/* Ratio between U gain and V gain must stay the same as
the ratio between the default U and V gain values. */
temp = (decoder->sat * 180) / 254;
temp = (ctrl->val * 180) / 254;
bt819_write(decoder, 0x0e, (temp >> 7) & 0xff);
bt819_setbit(decoder, 0x0b, 0, (temp >> 15) & 0x01);
break;
case V4L2_CID_HUE:
if (decoder->hue == ctrl->value)
break;
decoder->hue = ctrl->value;
bt819_write(decoder, 0x0f, decoder->hue);
bt819_write(decoder, 0x0f, ctrl->val);
break;
default:
@ -406,29 +373,6 @@ static int bt819_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
return 0;
}
static int bt819_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct bt819 *decoder = to_bt819(sd);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ctrl->value = decoder->bright;
break;
case V4L2_CID_CONTRAST:
ctrl->value = decoder->contrast;
break;
case V4L2_CID_SATURATION:
ctrl->value = decoder->sat;
break;
case V4L2_CID_HUE:
ctrl->value = decoder->hue;
break;
default:
return -EINVAL;
}
return 0;
}
static int bt819_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
{
struct bt819 *decoder = to_bt819(sd);
@ -439,11 +383,19 @@ static int bt819_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops bt819_ctrl_ops = {
.s_ctrl = bt819_s_ctrl,
};
static const struct v4l2_subdev_core_ops bt819_core_ops = {
.g_chip_ident = bt819_g_chip_ident,
.g_ctrl = bt819_g_ctrl,
.s_ctrl = bt819_s_ctrl,
.queryctrl = bt819_queryctrl,
.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
.g_ctrl = v4l2_subdev_g_ctrl,
.s_ctrl = v4l2_subdev_s_ctrl,
.queryctrl = v4l2_subdev_queryctrl,
.querymenu = v4l2_subdev_querymenu,
.s_std = bt819_s_std,
};
@ -505,23 +457,40 @@ static int bt819_probe(struct i2c_client *client,
decoder->norm = V4L2_STD_NTSC;
decoder->input = 0;
decoder->enable = 1;
decoder->bright = 0;
decoder->contrast = 0xd8; /* 100% of original signal */
decoder->hue = 0;
decoder->sat = 0xfe; /* 100% of original signal */
i = bt819_init(sd);
if (i < 0)
v4l2_dbg(1, debug, sd, "init status %d\n", i);
v4l2_ctrl_handler_init(&decoder->hdl, 4);
v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
V4L2_CID_CONTRAST, 0, 511, 1, 0xd8);
v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
V4L2_CID_SATURATION, 0, 511, 1, 0xfe);
v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
V4L2_CID_HUE, -128, 127, 1, 0);
sd->ctrl_handler = &decoder->hdl;
if (decoder->hdl.error) {
int err = decoder->hdl.error;
v4l2_ctrl_handler_free(&decoder->hdl);
kfree(decoder);
return err;
}
v4l2_ctrl_handler_setup(&decoder->hdl);
return 0;
}
static int bt819_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct bt819 *decoder = to_bt819(sd);
v4l2_device_unregister_subdev(sd);
kfree(to_bt819(sd));
v4l2_ctrl_handler_free(&decoder->hdl);
kfree(decoder);
return 0;
}