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V4L/DVB (11452): gspca - m5602-po1030: Convert to have a v4l2 ctrl cache

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Let the po1030 have a local v4l2 ctrl cache as this minimizes the load on reading the registers and improves performance.

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Erik Andr?n 2009-01-06 06:39:11 -03:00 committed by Mauro Carvalho Chehab
parent ac3d5bfecc
commit 05d7d9ced6
2 changed files with 80 additions and 64 deletions
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142
drivers/media/video/gspca/m5602/m5602_po1030.c
View file

@ -32,6 +32,7 @@ static struct v4l2_pix_format po1030_modes[] = {
};
const static struct ctrl po1030_ctrls[] = {
#define GAIN_IDX 0
{
{
.id = V4L2_CID_GAIN,
@ -45,7 +46,9 @@ const static struct ctrl po1030_ctrls[] = {
},
.set = po1030_set_gain,
.get = po1030_get_gain
}, {
},
#define EXPOSURE_IDX 1
{
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
@ -58,7 +61,9 @@ const static struct ctrl po1030_ctrls[] = {
},
.set = po1030_set_exposure,
.get = po1030_get_exposure
}, {
},
#define RED_BALANCE_IDX 2
{
{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
@ -71,7 +76,9 @@ const static struct ctrl po1030_ctrls[] = {
},
.set = po1030_set_red_balance,
.get = po1030_get_red_balance
}, {
},
#define BLUE_BALANCE_IDX 3
{
{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
@ -84,7 +91,9 @@ const static struct ctrl po1030_ctrls[] = {
},
.set = po1030_set_blue_balance,
.get = po1030_get_blue_balance
}, {
},
#define HFLIP_IDX 4
{
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
@ -96,7 +105,9 @@ const static struct ctrl po1030_ctrls[] = {
},
.set = po1030_set_hflip,
.get = po1030_get_hflip
}, {
},
#define VFLIP_IDX 5
{
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
@ -116,6 +127,7 @@ static void po1030_dump_registers(struct sd *sd);
int po1030_probe(struct sd *sd)
{
u8 prod_id = 0, ver_id = 0, i;
s32 *sensor_settings = sd->sensor_priv;
if (force_sensor) {
if (force_sensor == PO1030_SENSOR) {
@ -152,10 +164,19 @@ int po1030_probe(struct sd *sd)
return -ENODEV;
sensor_found:
sensor_settings = kmalloc(
ARRAY_SIZE(po1030_ctrls) * sizeof(s32), GFP_KERNEL);
if (!sensor_settings)
return -ENOMEM;
sd->gspca_dev.cam.cam_mode = po1030_modes;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);
sd->desc->ctrls = po1030_ctrls;
sd->desc->nctrls = ARRAY_SIZE(po1030_ctrls);
for (i = 0; i < ARRAY_SIZE(po1030_ctrls); i++)
sensor_settings[i] = po1030_ctrls[i].qctrl.default_value;
sd->sensor_priv = sensor_settings;
return 0;
}
@ -195,30 +216,21 @@ int po1030_init(struct sd *sd)
int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_H,
&i2c_data, 1);
if (err < 0)
return err;
*val = (i2c_data << 8);
err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_M,
&i2c_data, 1);
*val |= i2c_data;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[EXPOSURE_IDX];
PDEBUG(D_V4L2, "Exposure read as %d", *val);
return err;
return 0;
}
int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
u8 i2c_data;
int err;
sensor_settings[EXPOSURE_IDX] = val;
PDEBUG(D_V4L2, "Set exposure to %d", val & 0xffff);
i2c_data = ((val & 0xff00) >> 8);
@ -242,39 +254,49 @@ int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[GAIN_IDX];
PDEBUG(D_V4L2, "Read global gain %d", *val);
return 0;
}
int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
u8 i2c_data;
int err;
err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN,
&i2c_data, 1);
*val = i2c_data;
PDEBUG(D_V4L2, "Read global gain %d", *val);
sensor_settings[GAIN_IDX] = val;
i2c_data = val & 0xff;
PDEBUG(D_V4L2, "Set global gain to %d", i2c_data);
err = m5602_write_sensor(sd, PO1030_REG_GLOBALGAIN,
&i2c_data, 1);
return err;
}
int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
err = m5602_read_sensor(sd, PO1030_REG_CONTROL2,
&i2c_data, 1);
*val = (i2c_data >> 7) & 0x01 ;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[HFLIP_IDX];
PDEBUG(D_V4L2, "Read hflip %d", *val);
return err;
return 0;
}
int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
u8 i2c_data;
int err;
sensor_settings[HFLIP_IDX] = val;
PDEBUG(D_V4L2, "Set hflip %d", val);
err = m5602_read_sensor(sd, PO1030_REG_CONTROL2, &i2c_data, 1);
if (err < 0)
@ -291,25 +313,23 @@ int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN,
&i2c_data, 1);
*val = (i2c_data >> 6) & 0x01;
s32 *sensor_settings = sd->sensor_priv;
*val= sensor_settings[VFLIP_IDX];
PDEBUG(D_V4L2, "Read vflip %d", *val);
return err;
return 0;
}
int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
u8 i2c_data;
int err;
sensor_settings[VFLIP_IDX] = val;
PDEBUG(D_V4L2, "Set vflip %d", val);
err = m5602_read_sensor(sd, PO1030_REG_CONTROL2, &i2c_data, 1);
if (err < 0)
@ -323,38 +343,25 @@ int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
return err;
}
int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
i2c_data = val & 0xff;
PDEBUG(D_V4L2, "Set global gain to %d", i2c_data);
err = m5602_write_sensor(sd, PO1030_REG_GLOBALGAIN,
&i2c_data, 1);
return err;
}
int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
s32 *sensor_settings = sd->sensor_priv;
err = m5602_read_sensor(sd, PO1030_REG_RED_GAIN,
&i2c_data, 1);
*val = i2c_data;
*val = sensor_settings[RED_BALANCE_IDX];
PDEBUG(D_V4L2, "Read red gain %d", *val);
return err;
return 0;
}
int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
u8 i2c_data;
int err;
sensor_settings[RED_BALANCE_IDX] = val;
i2c_data = val & 0xff;
PDEBUG(D_V4L2, "Set red gain to %d", i2c_data);
err = m5602_write_sensor(sd, PO1030_REG_RED_GAIN,
@ -365,22 +372,23 @@ int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 i2c_data;
int err;
s32 *sensor_settings = sd->sensor_priv;
err = m5602_read_sensor(sd, PO1030_REG_BLUE_GAIN,
&i2c_data, 1);
*val = i2c_data;
*val = sensor_settings[BLUE_BALANCE_IDX];
PDEBUG(D_V4L2, "Read blue gain %d", *val);
return err;
return 0;
}
int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
u8 i2c_data;
int err;
sensor_settings[BLUE_BALANCE_IDX] = val;
i2c_data = val & 0xff;
PDEBUG(D_V4L2, "Set blue gain to %d", i2c_data);
err = m5602_write_sensor(sd, PO1030_REG_BLUE_GAIN,
@ -394,6 +402,12 @@ int po1030_power_down(struct sd *sd)
return 0;
}
void po1030_disconnect(struct sd *sd)
{
sd->sensor = NULL;
kfree(sd->sensor_priv);
}
static void po1030_dump_registers(struct sd *sd)
{
int address;

2
drivers/media/video/gspca/m5602/m5602_po1030.h
View file

@ -127,6 +127,7 @@ extern int dump_sensor;
int po1030_probe(struct sd *sd);
int po1030_init(struct sd *sd);
int po1030_power_down(struct sd *sd);
void po1030_disconnect(struct sd *sd);
int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val);
int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val);
@ -150,6 +151,7 @@ static const struct m5602_sensor po1030 = {
.probe = po1030_probe,
.init = po1030_init,
.power_down = po1030_power_down,
.disconnect = po1030_disconnect,
};
static const unsigned char preinit_po1030[][3] =