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: Jean-François Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-François Moine
Mauro Carvalho Chehab
parent
ebb78c5a81
commit
e9b156532e
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@ -46,9 +46,9 @@ struct sd {
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u8 gamma;
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u8 sharpness;
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u8 freq;
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u8 red_balance; /* split balance */
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u8 blue_balance;
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u8 global_gain; /* aka gain */
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u8 red_gain;
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u8 blue_gain;
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u8 green_gain;
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u8 awb; /* set default r/g/b and activate */
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u8 mirror;
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u8 effect;
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@ -80,12 +80,12 @@ static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setblue_balance(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getblue_balance(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setred_balance(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getred_balance(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setglobal_gain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getglobal_gain(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setblue_gain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getblue_gain(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setred_gain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getred_gain(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setmirror(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getmirror(struct gspca_dev *gspca_dev, __s32 *val);
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@ -246,11 +246,11 @@ static const struct ctrl sd_ctrls[] = {
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.minimum = 0x10,
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.maximum = 0x40,
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.step = 1,
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#define BLUE_BALANCE_DEF 0x20
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.default_value = BLUE_BALANCE_DEF,
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#define BLUE_GAIN_DEF 0x20
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.default_value = BLUE_GAIN_DEF,
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},
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.set = sd_setblue_balance,
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.get = sd_getblue_balance,
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.set = sd_setblue_gain,
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.get = sd_getblue_gain,
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},
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{
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{
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@ -260,11 +260,11 @@ static const struct ctrl sd_ctrls[] = {
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.minimum = 0x10,
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.maximum = 0x40,
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.step = 1,
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#define RED_BALANCE_DEF 0x20
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.default_value = RED_BALANCE_DEF,
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#define RED_GAIN_DEF 0x20
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.default_value = RED_GAIN_DEF,
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},
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.set = sd_setred_balance,
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.get = sd_getred_balance,
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.set = sd_setred_gain,
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.get = sd_getred_gain,
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},
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{
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{
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@ -274,11 +274,11 @@ static const struct ctrl sd_ctrls[] = {
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.minimum = 0x10,
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.maximum = 0x40,
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.step = 1,
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#define global_gain_DEF 0x20
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.default_value = global_gain_DEF,
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#define GAIN_DEF 0x20
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.default_value = GAIN_DEF,
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},
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.set = sd_setglobal_gain,
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.get = sd_getglobal_gain,
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.set = sd_setgain,
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.get = sd_getgain,
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},
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};
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@ -699,9 +699,9 @@ static int sd_config(struct gspca_dev *gspca_dev,
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sd->awb = AWB_DEF;
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sd->sharpness = SHARPNESS_DEF;
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sd->effect = EFFECTS_DEF;
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sd->red_balance = RED_BALANCE_DEF;
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sd->blue_balance = BLUE_BALANCE_DEF;
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sd->global_gain = global_gain_DEF;
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sd->red_gain = RED_GAIN_DEF;
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sd->blue_gain = BLUE_GAIN_DEF;
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sd->green_gain = GAIN_DEF * 3 - RED_GAIN_DEF - BLUE_GAIN_DEF;
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return 0;
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}
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@ -754,33 +754,59 @@ static void setgamma(struct gspca_dev *gspca_dev)
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reg_w_ixbuf(gspca_dev, 0x90,
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gamma_table[sd->gamma], sizeof gamma_table[0]);
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}
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static void setglobalgain(struct gspca_dev *gspca_dev)
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{
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static void setRGB(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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reg_w(gspca_dev, (sd->red_balance << 8) + 0x87);
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reg_w(gspca_dev, (sd->blue_balance << 8) + 0x88);
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reg_w(gspca_dev, (sd->global_gain << 8) + 0x89);
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u8 all_gain_reg[6] =
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{0x87, 0x00, 0x88, 0x00, 0x89, 0x00};
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all_gain_reg[1] = sd->red_gain;
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all_gain_reg[3] = sd->blue_gain;
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all_gain_reg[5] = sd->green_gain;
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reg_w_buf(gspca_dev, all_gain_reg, sizeof all_gain_reg);
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}
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/* Generic fnc for r/b balance, exposure and whitebalance */
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/* Generic fnc for r/b balance, exposure and awb */
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static void setawb(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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u16 reg80;
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reg80 = (sensor_data[sd->sensor].reg80 << 8) | 0x80;
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/* on awb leave defaults values */
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if (sd->awb) {
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reg_w(gspca_dev, 0x3c80);
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} else {
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reg_w(gspca_dev, 0x3880);
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if (!sd->awb) {
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/* shoud we wait here.. */
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/* update and reset 'global gain' with webcam parameters */
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sd->red_balance = reg_r(gspca_dev, 0x0087);
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sd->blue_balance = reg_r(gspca_dev, 0x0088);
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sd->global_gain = reg_r(gspca_dev, 0x0089);
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setglobalgain(gspca_dev);
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/* update and reset RGB gains with webcam values */
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sd->red_gain = reg_r(gspca_dev, 0x0087);
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sd->blue_gain = reg_r(gspca_dev, 0x0088);
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sd->green_gain = reg_r(gspca_dev, 0x0089);
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reg80 &= ~0x0400; /* AWB off */
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}
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reg_w(gspca_dev, reg80);
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reg_w(gspca_dev, reg80);
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}
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static void init_gains(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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u16 reg80;
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u8 all_gain_reg[8] =
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{0x87, 0x00, 0x88, 0x00, 0x89, 0x00, 0x80, 0x00};
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all_gain_reg[1] = sd->red_gain;
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all_gain_reg[3] = sd->blue_gain;
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all_gain_reg[5] = sd->green_gain;
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reg80 = sensor_data[sd->sensor].reg80;
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if (!sd->awb)
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reg80 &= ~0x04;
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all_gain_reg[7] = reg80;
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reg_w_buf(gspca_dev, all_gain_reg, sizeof all_gain_reg);
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reg_w(gspca_dev, (sd->red_gain << 8) + 0x87);
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reg_w(gspca_dev, (sd->blue_gain << 8) + 0x88);
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reg_w(gspca_dev, (sd->green_gain << 8) + 0x89);
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}
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static void setsharpness(struct gspca_dev *gspca_dev)
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@ -919,14 +945,9 @@ static int sd_init(struct gspca_dev *gspca_dev)
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setgamma(gspca_dev);
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setcolors(gspca_dev);
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setsharpness(gspca_dev);
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setawb(gspca_dev);
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init_gains(gspca_dev);
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setfreq(gspca_dev);
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reg_w(gspca_dev, 0x2087); /* tied to white balance? */
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reg_w(gspca_dev, 0x2088);
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reg_w(gspca_dev, 0x2089);
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reg_w_buf(gspca_dev, sensor->data4, sizeof sensor->data4);
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reg_w_buf(gspca_dev, sensor->data5, sizeof sensor->data5);
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reg_w_buf(gspca_dev, sensor->nset8, sizeof sensor->nset8);
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reg_w_buf(gspca_dev, sensor->stream, sizeof sensor->stream);
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@ -1099,62 +1120,76 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
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gspca_frame_add(gspca_dev, pkt_type, data, len);
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}
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static int sd_setblue_balance(struct gspca_dev *gspca_dev, __s32 val)
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static int sd_setblue_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->blue_balance = val;
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sd->blue_gain = val;
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if (gspca_dev->streaming)
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reg_w(gspca_dev, (val << 8) + 0x88);
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return 0;
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}
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static int sd_getblue_balance(struct gspca_dev *gspca_dev, __s32 *val)
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static int sd_getblue_gain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->blue_balance;
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*val = sd->blue_gain;
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return 0;
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}
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static int sd_setred_balance(struct gspca_dev *gspca_dev, __s32 val)
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static int sd_setred_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->red_balance = val;
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sd->red_gain = val;
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if (gspca_dev->streaming)
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reg_w(gspca_dev, (val << 8) + 0x87);
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return 0;
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}
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static int sd_getred_balance(struct gspca_dev *gspca_dev, __s32 *val)
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static int sd_getred_gain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->red_balance;
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*val = sd->red_gain;
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return 0;
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}
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static int sd_setglobal_gain(struct gspca_dev *gspca_dev, __s32 val)
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static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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u16 psg, nsg;
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psg = sd->red_gain + sd->blue_gain + sd->green_gain;
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nsg = val * 3;
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sd->red_gain = sd->red_gain * nsg / psg;
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if (sd->red_gain > 0x40)
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sd->red_gain = 0x40;
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else if (sd->red_gain < 0x10)
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sd->red_gain = 0x10;
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sd->blue_gain = sd->blue_gain * nsg / psg;
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if (sd->blue_gain > 0x40)
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sd->blue_gain = 0x40;
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else if (sd->blue_gain < 0x10)
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sd->blue_gain = 0x10;
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sd->green_gain = sd->green_gain * nsg / psg;
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if (sd->green_gain > 0x40)
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sd->green_gain = 0x40;
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else if (sd->green_gain < 0x10)
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sd->green_gain = 0x10;
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sd->global_gain = val;
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if (gspca_dev->streaming)
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setglobalgain(gspca_dev);
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setRGB(gspca_dev);
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return 0;
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}
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static int sd_getglobal_gain(struct gspca_dev *gspca_dev, __s32 *val)
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static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->global_gain;
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*val = (sd->red_gain + sd->blue_gain + sd->green_gain) / 3;
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return 0;
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}
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