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Commit e9b15653 authored by Jean-François Moine's avatar Jean-François Moine Committed by Mauro Carvalho Chehab
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V4L/DVB: gspca - t613: Change the gain mechanism 

- variable / function rename
- set the gains in one exchange
- don't alter the register 80 which contains the AWB flag
  and other sensor specific values
- the global gain is now the average of the R, G and B gains.
Signed-off-by: default avatarJean-François Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent ebb78c5a
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Showing with 97 additions and 62 deletions
drivers/media/video/gspca/t613.c
View file @ e9b15653
......@@ -46,9 +46,9 @@ struct sd {
u8 gamma;
u8 sharpness;
u8 freq;
u8 red_balance; /* split balance */
u8 blue_balance;
u8 global_gain; /* aka gain */
u8 red_gain;
u8 blue_gain;
u8 green_gain;
u8 awb; /* set default r/g/b and activate */
u8 mirror;
u8 effect;
......@@ -80,12 +80,12 @@ static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setblue_balance(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getblue_balance(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setred_balance(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getred_balance(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setglobal_gain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getglobal_gain(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setblue_gain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getblue_gain(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setred_gain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getred_gain(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setmirror(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getmirror(struct gspca_dev *gspca_dev, __s32 *val);
......@@ -246,11 +246,11 @@ static const struct ctrl sd_ctrls[] = {
.minimum = 0x10,
.maximum = 0x40,
.step = 1,
#define BLUE_BALANCE_DEF 0x20
.default_value = BLUE_BALANCE_DEF,
#define BLUE_GAIN_DEF 0x20
.default_value = BLUE_GAIN_DEF,
},
.set = sd_setblue_balance,
.get = sd_getblue_balance,
.set = sd_setblue_gain,
.get = sd_getblue_gain,
},
{
{
......@@ -260,11 +260,11 @@ static const struct ctrl sd_ctrls[] = {
.minimum = 0x10,
.maximum = 0x40,
.step = 1,
#define RED_BALANCE_DEF 0x20
.default_value = RED_BALANCE_DEF,
#define RED_GAIN_DEF 0x20
.default_value = RED_GAIN_DEF,
},
.set = sd_setred_balance,
.get = sd_getred_balance,
.set = sd_setred_gain,
.get = sd_getred_gain,
},
{
{
......@@ -274,11 +274,11 @@ static const struct ctrl sd_ctrls[] = {
.minimum = 0x10,
.maximum = 0x40,
.step = 1,
#define global_gain_DEF 0x20
.default_value = global_gain_DEF,
#define GAIN_DEF 0x20
.default_value = GAIN_DEF,
},
.set = sd_setglobal_gain,
.get = sd_getglobal_gain,
.set = sd_setgain,
.get = sd_getgain,
},
};
......@@ -699,9 +699,9 @@ static int sd_config(struct gspca_dev *gspca_dev,
sd->awb = AWB_DEF;
sd->sharpness = SHARPNESS_DEF;
sd->effect = EFFECTS_DEF;
sd->red_balance = RED_BALANCE_DEF;
sd->blue_balance = BLUE_BALANCE_DEF;
sd->global_gain = global_gain_DEF;
sd->red_gain = RED_GAIN_DEF;
sd->blue_gain = BLUE_GAIN_DEF;
sd->green_gain = GAIN_DEF * 3 - RED_GAIN_DEF - BLUE_GAIN_DEF;
return 0;
}
......@@ -754,33 +754,59 @@ static void setgamma(struct gspca_dev *gspca_dev)
reg_w_ixbuf(gspca_dev, 0x90,
gamma_table[sd->gamma], sizeof gamma_table[0]);
}
static void setglobalgain(struct gspca_dev *gspca_dev)
{
static void setRGB(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, (sd->red_balance << 8) + 0x87);
reg_w(gspca_dev, (sd->blue_balance << 8) + 0x88);
reg_w(gspca_dev, (sd->global_gain << 8) + 0x89);
u8 all_gain_reg[6] =
{0x87, 0x00, 0x88, 0x00, 0x89, 0x00};
all_gain_reg[1] = sd->red_gain;
all_gain_reg[3] = sd->blue_gain;
all_gain_reg[5] = sd->green_gain;
reg_w_buf(gspca_dev, all_gain_reg, sizeof all_gain_reg);
}
/* Generic fnc for r/b balance, exposure and whitebalance */
/* Generic fnc for r/b balance, exposure and awb */
static void setawb(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u16 reg80;
reg80 = (sensor_data[sd->sensor].reg80 << 8) | 0x80;
/* on awb leave defaults values */
if (sd->awb) {
reg_w(gspca_dev, 0x3c80);
} else {
reg_w(gspca_dev, 0x3880);
if (!sd->awb) {
/* shoud we wait here.. */
/* update and reset 'global gain' with webcam parameters */
sd->red_balance = reg_r(gspca_dev, 0x0087);
sd->blue_balance = reg_r(gspca_dev, 0x0088);
sd->global_gain = reg_r(gspca_dev, 0x0089);
setglobalgain(gspca_dev);
/* update and reset RGB gains with webcam values */
sd->red_gain = reg_r(gspca_dev, 0x0087);
sd->blue_gain = reg_r(gspca_dev, 0x0088);
sd->green_gain = reg_r(gspca_dev, 0x0089);
reg80 &= ~0x0400; /* AWB off */
}
reg_w(gspca_dev, reg80);
reg_w(gspca_dev, reg80);
}
static void init_gains(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u16 reg80;
u8 all_gain_reg[8] =
{0x87, 0x00, 0x88, 0x00, 0x89, 0x00, 0x80, 0x00};
all_gain_reg[1] = sd->red_gain;
all_gain_reg[3] = sd->blue_gain;
all_gain_reg[5] = sd->green_gain;
reg80 = sensor_data[sd->sensor].reg80;
if (!sd->awb)
reg80 &= ~0x04;
all_gain_reg[7] = reg80;
reg_w_buf(gspca_dev, all_gain_reg, sizeof all_gain_reg);
reg_w(gspca_dev, (sd->red_gain << 8) + 0x87);
reg_w(gspca_dev, (sd->blue_gain << 8) + 0x88);
reg_w(gspca_dev, (sd->green_gain << 8) + 0x89);
}
static void setsharpness(struct gspca_dev *gspca_dev)
......@@ -919,14 +945,9 @@ static int sd_init(struct gspca_dev *gspca_dev)
setgamma(gspca_dev);
setcolors(gspca_dev);
setsharpness(gspca_dev);
setawb(gspca_dev);
init_gains(gspca_dev);
setfreq(gspca_dev);
reg_w(gspca_dev, 0x2087); /* tied to white balance? */
reg_w(gspca_dev, 0x2088);
reg_w(gspca_dev, 0x2089);
reg_w_buf(gspca_dev, sensor->data4, sizeof sensor->data4);
reg_w_buf(gspca_dev, sensor->data5, sizeof sensor->data5);
reg_w_buf(gspca_dev, sensor->nset8, sizeof sensor->nset8);
reg_w_buf(gspca_dev, sensor->stream, sizeof sensor->stream);
......@@ -1099,62 +1120,76 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
gspca_frame_add(gspca_dev, pkt_type, data, len);
}
static int sd_setblue_balance(struct gspca_dev *gspca_dev, __s32 val)
static int sd_setblue_gain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->blue_balance = val;
sd->blue_gain = val;
if (gspca_dev->streaming)
reg_w(gspca_dev, (val << 8) + 0x88);
return 0;
}
static int sd_getblue_balance(struct gspca_dev *gspca_dev, __s32 *val)
static int sd_getblue_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->blue_balance;
*val = sd->blue_gain;
return 0;
}
static int sd_setred_balance(struct gspca_dev *gspca_dev, __s32 val)
static int sd_setred_gain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->red_balance = val;
sd->red_gain = val;
if (gspca_dev->streaming)
reg_w(gspca_dev, (val << 8) + 0x87);
return 0;
}
static int sd_getred_balance(struct gspca_dev *gspca_dev, __s32 *val)
static int sd_getred_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->red_balance;
*val = sd->red_gain;
return 0;
}
static int sd_setglobal_gain(struct gspca_dev *gspca_dev, __s32 val)
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
u16 psg, nsg;
psg = sd->red_gain + sd->blue_gain + sd->green_gain;
nsg = val * 3;
sd->red_gain = sd->red_gain * nsg / psg;
if (sd->red_gain > 0x40)
sd->red_gain = 0x40;
else if (sd->red_gain < 0x10)
sd->red_gain = 0x10;
sd->blue_gain = sd->blue_gain * nsg / psg;
if (sd->blue_gain > 0x40)
sd->blue_gain = 0x40;
else if (sd->blue_gain < 0x10)
sd->blue_gain = 0x10;
sd->green_gain = sd->green_gain * nsg / psg;
if (sd->green_gain > 0x40)
sd->green_gain = 0x40;
else if (sd->green_gain < 0x10)
sd->green_gain = 0x10;
sd->global_gain = val;
if (gspca_dev->streaming)
setglobalgain(gspca_dev);
setRGB(gspca_dev);
return 0;
}
static int sd_getglobal_gain(struct gspca_dev *gspca_dev, __s32 *val)
static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->global_gain;
*val = (sd->red_gain + sd->blue_gain + sd->green_gain) / 3;
return 0;
}
......
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