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path: root/drivers/media/video/gspca/w996Xcf.c
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Diffstat (limited to 'drivers/media/video/gspca/w996Xcf.c')
-rw-r--r--drivers/media/video/gspca/w996Xcf.c325
1 files changed, 143 insertions, 182 deletions
diff --git a/drivers/media/video/gspca/w996Xcf.c b/drivers/media/video/gspca/w996Xcf.c
index 4066ac8c45a..4a9e622e5e1 100644
--- a/drivers/media/video/gspca/w996Xcf.c
+++ b/drivers/media/video/gspca/w996Xcf.c
@@ -59,18 +59,21 @@ static const struct v4l2_pix_format w9968cf_vga_mode[] = {
.colorspace = V4L2_COLORSPACE_JPEG},
};
-static int reg_w(struct sd *sd, __u16 index, __u16 value);
+static void reg_w(struct sd *sd, u16 index, u16 value);
/*--------------------------------------------------------------------------
Write 64-bit data to the fast serial bus registers.
Return 0 on success, -1 otherwise.
--------------------------------------------------------------------------*/
-static int w9968cf_write_fsb(struct sd *sd, u16* data)
+static void w9968cf_write_fsb(struct sd *sd, u16* data)
{
struct usb_device *udev = sd->gspca_dev.dev;
u16 value;
int ret;
+ if (sd->gspca_dev.usb_err < 0)
+ return;
+
value = *data++;
memcpy(sd->gspca_dev.usb_buf, data, 6);
@@ -79,20 +82,21 @@ static int w9968cf_write_fsb(struct sd *sd, u16* data)
value, 0x06, sd->gspca_dev.usb_buf, 6, 500);
if (ret < 0) {
err("Write FSB registers failed (%d)", ret);
- return ret;
+ sd->gspca_dev.usb_err = ret;
}
-
- return 0;
}
/*--------------------------------------------------------------------------
Write data to the serial bus control register.
Return 0 on success, a negative number otherwise.
--------------------------------------------------------------------------*/
-static int w9968cf_write_sb(struct sd *sd, u16 value)
+static void w9968cf_write_sb(struct sd *sd, u16 value)
{
int ret;
+ if (sd->gspca_dev.usb_err < 0)
+ return;
+
/* We don't use reg_w here, as that would cause all writes when
bitbanging i2c to be logged, making the logs impossible to read */
ret = usb_control_msg(sd->gspca_dev.dev,
@@ -105,10 +109,8 @@ static int w9968cf_write_sb(struct sd *sd, u16 value)
if (ret < 0) {
err("Write SB reg [01] %04x failed", value);
- return ret;
+ sd->gspca_dev.usb_err = ret;
}
-
- return 0;
}
/*--------------------------------------------------------------------------
@@ -119,6 +121,9 @@ static int w9968cf_read_sb(struct sd *sd)
{
int ret;
+ if (sd->gspca_dev.usb_err < 0)
+ return -1;
+
/* We don't use reg_r here, as the w9968cf is special and has 16
bit registers instead of 8 bit */
ret = usb_control_msg(sd->gspca_dev.dev,
@@ -126,11 +131,13 @@ static int w9968cf_read_sb(struct sd *sd)
1,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, 0x01, sd->gspca_dev.usb_buf, 2, 500);
- if (ret >= 0)
+ if (ret >= 0) {
ret = sd->gspca_dev.usb_buf[0] |
(sd->gspca_dev.usb_buf[1] << 8);
- else
+ } else {
err("Read SB reg [01] failed");
+ sd->gspca_dev.usb_err = ret;
+ }
udelay(W9968CF_I2C_BUS_DELAY);
@@ -142,22 +149,20 @@ static int w9968cf_read_sb(struct sd *sd)
This function is called by w9968cf_start_transfer().
Return 0 on success, a negative number otherwise.
--------------------------------------------------------------------------*/
-static int w9968cf_upload_quantizationtables(struct sd *sd)
+static void w9968cf_upload_quantizationtables(struct sd *sd)
{
u16 a, b;
- int ret = 0, i, j;
+ int i, j;
- ret += reg_w(sd, 0x39, 0x0010); /* JPEG clock enable */
+ reg_w(sd, 0x39, 0x0010); /* JPEG clock enable */
for (i = 0, j = 0; i < 32; i++, j += 2) {
- a = Y_QUANTABLE[j] | ((unsigned)(Y_QUANTABLE[j+1]) << 8);
- b = UV_QUANTABLE[j] | ((unsigned)(UV_QUANTABLE[j+1]) << 8);
- ret += reg_w(sd, 0x40+i, a);
- ret += reg_w(sd, 0x60+i, b);
+ a = Y_QUANTABLE[j] | ((unsigned)(Y_QUANTABLE[j + 1]) << 8);
+ b = UV_QUANTABLE[j] | ((unsigned)(UV_QUANTABLE[j + 1]) << 8);
+ reg_w(sd, 0x40 + i, a);
+ reg_w(sd, 0x60 + i, b);
}
- ret += reg_w(sd, 0x39, 0x0012); /* JPEG encoder enable */
-
- return ret;
+ reg_w(sd, 0x39, 0x0012); /* JPEG encoder enable */
}
/****************************************************************************
@@ -168,50 +173,39 @@ static int w9968cf_upload_quantizationtables(struct sd *sd)
* i2c_adap_read_byte() *
****************************************************************************/
-static int w9968cf_smbus_start(struct sd *sd)
+static void w9968cf_smbus_start(struct sd *sd)
{
- int ret = 0;
-
- ret += w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */
- ret += w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */
-
- return ret;
+ w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */
+ w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */
}
-static int w9968cf_smbus_stop(struct sd *sd)
+static void w9968cf_smbus_stop(struct sd *sd)
{
- int ret = 0;
-
- ret += w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */
- ret += w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */
- ret += w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */
-
- return ret;
+ w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */
+ w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */
+ w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */
}
-static int w9968cf_smbus_write_byte(struct sd *sd, u8 v)
+static void w9968cf_smbus_write_byte(struct sd *sd, u8 v)
{
u8 bit;
- int ret = 0, sda;
+ int sda;
for (bit = 0 ; bit < 8 ; bit++) {
sda = (v & 0x80) ? 2 : 0;
v <<= 1;
/* SDE=1, SDA=sda, SCL=0 */
- ret += w9968cf_write_sb(sd, 0x10 | sda);
+ w9968cf_write_sb(sd, 0x10 | sda);
/* SDE=1, SDA=sda, SCL=1 */
- ret += w9968cf_write_sb(sd, 0x11 | sda);
+ w9968cf_write_sb(sd, 0x11 | sda);
/* SDE=1, SDA=sda, SCL=0 */
- ret += w9968cf_write_sb(sd, 0x10 | sda);
+ w9968cf_write_sb(sd, 0x10 | sda);
}
-
- return ret;
}
-static int w9968cf_smbus_read_byte(struct sd *sd, u8* v)
+static void w9968cf_smbus_read_byte(struct sd *sd, u8 *v)
{
u8 bit;
- int ret = 0;
/* No need to ensure SDA is high as we are always called after
read_ack which ends with SDA high */
@@ -219,51 +213,40 @@ static int w9968cf_smbus_read_byte(struct sd *sd, u8* v)
for (bit = 0 ; bit < 8 ; bit++) {
*v <<= 1;
/* SDE=1, SDA=1, SCL=1 */
- ret += w9968cf_write_sb(sd, 0x0013);
+ w9968cf_write_sb(sd, 0x0013);
*v |= (w9968cf_read_sb(sd) & 0x0008) ? 1 : 0;
/* SDE=1, SDA=1, SCL=0 */
- ret += w9968cf_write_sb(sd, 0x0012);
+ w9968cf_write_sb(sd, 0x0012);
}
-
- return ret;
}
-static int w9968cf_smbus_write_nack(struct sd *sd)
+static void w9968cf_smbus_write_nack(struct sd *sd)
{
- int ret = 0;
-
/* No need to ensure SDA is high as we are always called after
read_byte which ends with SDA high */
- ret += w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */
- ret += w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */
-
- return ret;
+ w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */
+ w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */
}
-static int w9968cf_smbus_read_ack(struct sd *sd)
+static void w9968cf_smbus_read_ack(struct sd *sd)
{
- int ret = 0, sda;
+ int sda;
/* Ensure SDA is high before raising clock to avoid a spurious stop */
- ret += w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */
- ret += w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */
+ w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */
+ w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */
sda = w9968cf_read_sb(sd);
- ret += w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */
- if (sda < 0)
- ret += sda;
- else if (sda & 0x08) {
+ w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */
+ if (sda >= 0 && (sda & 0x08)) {
PDEBUG(D_USBI, "Did not receive i2c ACK");
- ret += -1;
+ sd->gspca_dev.usb_err = -EIO;
}
-
- return ret;
}
/* SMBus protocol: S Addr Wr [A] Subaddr [A] Value [A] P */
-static int w9968cf_i2c_w(struct sd *sd, u8 reg, u8 value)
+static void w9968cf_i2c_w(struct sd *sd, u8 reg, u8 value)
{
u16* data = (u16 *)sd->gspca_dev.usb_buf;
- int ret = 0;
data[0] = 0x082f | ((sd->sensor_addr & 0x80) ? 0x1500 : 0x0);
data[0] |= (sd->sensor_addr & 0x40) ? 0x4000 : 0x0;
@@ -276,7 +259,7 @@ static int w9968cf_i2c_w(struct sd *sd, u8 reg, u8 value)
data[3] = 0x1d20 | ((sd->sensor_addr & 0x02) ? 0x0001 : 0x0);
data[3] |= (sd->sensor_addr & 0x01) ? 0x0054 : 0x0;
- ret += w9968cf_write_fsb(sd, data);
+ w9968cf_write_fsb(sd, data);
data[0] = 0x8208 | ((reg & 0x80) ? 0x0015 : 0x0);
data[0] |= (reg & 0x40) ? 0x0540 : 0x0;
@@ -290,7 +273,7 @@ static int w9968cf_i2c_w(struct sd *sd, u8 reg, u8 value)
data[2] |= (reg & 0x01) ? 0x5400 : 0x0;
data[3] = 0x001d;
- ret += w9968cf_write_fsb(sd, data);
+ w9968cf_write_fsb(sd, data);
data[0] = 0x8208 | ((value & 0x80) ? 0x0015 : 0x0);
data[0] |= (value & 0x40) ? 0x0540 : 0x0;
@@ -304,14 +287,9 @@ static int w9968cf_i2c_w(struct sd *sd, u8 reg, u8 value)
data[2] |= (value & 0x01) ? 0x5400 : 0x0;
data[3] = 0xfe1d;
- ret += w9968cf_write_fsb(sd, data);
+ w9968cf_write_fsb(sd, data);
- if (!ret)
- PDEBUG(D_USBO, "i2c 0x%02x -> [0x%02x]", value, reg);
- else
- PDEBUG(D_ERR, "i2c 0x%02x -> [0x%02x] failed", value, reg);
-
- return ret;
+ PDEBUG(D_USBO, "i2c 0x%02x -> [0x%02x]", value, reg);
}
/* SMBus protocol: S Addr Wr [A] Subaddr [A] P S Addr+1 Rd [A] [Value] NA P */
@@ -321,28 +299,28 @@ static int w9968cf_i2c_r(struct sd *sd, u8 reg)
u8 value;
/* Fast serial bus data control disable */
- ret += w9968cf_write_sb(sd, 0x0013); /* don't change ! */
-
- ret += w9968cf_smbus_start(sd);
- ret += w9968cf_smbus_write_byte(sd, sd->sensor_addr);
- ret += w9968cf_smbus_read_ack(sd);
- ret += w9968cf_smbus_write_byte(sd, reg);
- ret += w9968cf_smbus_read_ack(sd);
- ret += w9968cf_smbus_stop(sd);
- ret += w9968cf_smbus_start(sd);
- ret += w9968cf_smbus_write_byte(sd, sd->sensor_addr + 1);
- ret += w9968cf_smbus_read_ack(sd);
- ret += w9968cf_smbus_read_byte(sd, &value);
+ w9968cf_write_sb(sd, 0x0013); /* don't change ! */
+
+ w9968cf_smbus_start(sd);
+ w9968cf_smbus_write_byte(sd, sd->sensor_addr);
+ w9968cf_smbus_read_ack(sd);
+ w9968cf_smbus_write_byte(sd, reg);
+ w9968cf_smbus_read_ack(sd);
+ w9968cf_smbus_stop(sd);
+ w9968cf_smbus_start(sd);
+ w9968cf_smbus_write_byte(sd, sd->sensor_addr + 1);
+ w9968cf_smbus_read_ack(sd);
+ w9968cf_smbus_read_byte(sd, &value);
/* signal we don't want to read anymore, the v4l1 driver used to
send an ack here which is very wrong! (and then fixed
the issues this gave by retrying reads) */
- ret += w9968cf_smbus_write_nack(sd);
- ret += w9968cf_smbus_stop(sd);
+ w9968cf_smbus_write_nack(sd);
+ w9968cf_smbus_stop(sd);
/* Fast serial bus data control re-enable */
- ret += w9968cf_write_sb(sd, 0x0030);
+ w9968cf_write_sb(sd, 0x0030);
- if (!ret) {
+ if (sd->gspca_dev.usb_err >= 0) {
ret = value;
PDEBUG(D_USBI, "i2c [0x%02X] -> 0x%02X", reg, value);
} else
@@ -351,79 +329,68 @@ static int w9968cf_i2c_r(struct sd *sd, u8 reg)
return ret;
}
-
/*--------------------------------------------------------------------------
Turn on the LED on some webcams. A beep should be heard too.
Return 0 on success, a negative number otherwise.
--------------------------------------------------------------------------*/
-static int w9968cf_configure(struct sd *sd)
+static void w9968cf_configure(struct sd *sd)
{
- int ret = 0;
-
- ret += reg_w(sd, 0x00, 0xff00); /* power-down */
- ret += reg_w(sd, 0x00, 0xbf17); /* reset everything */
- ret += reg_w(sd, 0x00, 0xbf10); /* normal operation */
- ret += reg_w(sd, 0x01, 0x0010); /* serial bus, SDS high */
- ret += reg_w(sd, 0x01, 0x0000); /* serial bus, SDS low */
- ret += reg_w(sd, 0x01, 0x0010); /* ..high 'beep-beep' */
- ret += reg_w(sd, 0x01, 0x0030); /* Set sda scl to FSB mode */
-
- if (ret)
- PDEBUG(D_ERR, "Couldn't turn on the LED");
+ reg_w(sd, 0x00, 0xff00); /* power-down */
+ reg_w(sd, 0x00, 0xbf17); /* reset everything */
+ reg_w(sd, 0x00, 0xbf10); /* normal operation */
+ reg_w(sd, 0x01, 0x0010); /* serial bus, SDS high */
+ reg_w(sd, 0x01, 0x0000); /* serial bus, SDS low */
+ reg_w(sd, 0x01, 0x0010); /* ..high 'beep-beep' */
+ reg_w(sd, 0x01, 0x0030); /* Set sda scl to FSB mode */
sd->stopped = 1;
-
- return ret;
}
-static int w9968cf_init(struct sd *sd)
+static void w9968cf_init(struct sd *sd)
{
- int ret = 0;
unsigned long hw_bufsize = sd->sif ? (352 * 288 * 2) : (640 * 480 * 2),
y0 = 0x0000,
- u0 = y0 + hw_bufsize/2,
- v0 = u0 + hw_bufsize/4,
- y1 = v0 + hw_bufsize/4,
- u1 = y1 + hw_bufsize/2,
- v1 = u1 + hw_bufsize/4;
-
- ret += reg_w(sd, 0x00, 0xff00); /* power off */
- ret += reg_w(sd, 0x00, 0xbf10); /* power on */
-
- ret += reg_w(sd, 0x03, 0x405d); /* DRAM timings */
- ret += reg_w(sd, 0x04, 0x0030); /* SDRAM timings */
-
- ret += reg_w(sd, 0x20, y0 & 0xffff); /* Y buf.0, low */
- ret += reg_w(sd, 0x21, y0 >> 16); /* Y buf.0, high */
- ret += reg_w(sd, 0x24, u0 & 0xffff); /* U buf.0, low */
- ret += reg_w(sd, 0x25, u0 >> 16); /* U buf.0, high */
- ret += reg_w(sd, 0x28, v0 & 0xffff); /* V buf.0, low */
- ret += reg_w(sd, 0x29, v0 >> 16); /* V buf.0, high */
-
- ret += reg_w(sd, 0x22, y1 & 0xffff); /* Y buf.1, low */
- ret += reg_w(sd, 0x23, y1 >> 16); /* Y buf.1, high */
- ret += reg_w(sd, 0x26, u1 & 0xffff); /* U buf.1, low */
- ret += reg_w(sd, 0x27, u1 >> 16); /* U buf.1, high */
- ret += reg_w(sd, 0x2a, v1 & 0xffff); /* V buf.1, low */
- ret += reg_w(sd, 0x2b, v1 >> 16); /* V buf.1, high */
-
- ret += reg_w(sd, 0x32, y1 & 0xffff); /* JPEG buf 0 low */
- ret += reg_w(sd, 0x33, y1 >> 16); /* JPEG buf 0 high */
-
- ret += reg_w(sd, 0x34, y1 & 0xffff); /* JPEG buf 1 low */
- ret += reg_w(sd, 0x35, y1 >> 16); /* JPEG bug 1 high */
-
- ret += reg_w(sd, 0x36, 0x0000);/* JPEG restart interval */
- ret += reg_w(sd, 0x37, 0x0804);/*JPEG VLE FIFO threshold*/
- ret += reg_w(sd, 0x38, 0x0000);/* disable hw up-scaling */
- ret += reg_w(sd, 0x3f, 0x0000); /* JPEG/MCTL test data */
-
- return ret;
+ u0 = y0 + hw_bufsize / 2,
+ v0 = u0 + hw_bufsize / 4,
+ y1 = v0 + hw_bufsize / 4,
+ u1 = y1 + hw_bufsize / 2,
+ v1 = u1 + hw_bufsize / 4;
+
+ reg_w(sd, 0x00, 0xff00); /* power off */
+ reg_w(sd, 0x00, 0xbf10); /* power on */
+
+ reg_w(sd, 0x03, 0x405d); /* DRAM timings */
+ reg_w(sd, 0x04, 0x0030); /* SDRAM timings */
+
+ reg_w(sd, 0x20, y0 & 0xffff); /* Y buf.0, low */
+ reg_w(sd, 0x21, y0 >> 16); /* Y buf.0, high */
+ reg_w(sd, 0x24, u0 & 0xffff); /* U buf.0, low */
+ reg_w(sd, 0x25, u0 >> 16); /* U buf.0, high */
+ reg_w(sd, 0x28, v0 & 0xffff); /* V buf.0, low */
+ reg_w(sd, 0x29, v0 >> 16); /* V buf.0, high */
+
+ reg_w(sd, 0x22, y1 & 0xffff); /* Y buf.1, low */
+ reg_w(sd, 0x23, y1 >> 16); /* Y buf.1, high */
+ reg_w(sd, 0x26, u1 & 0xffff); /* U buf.1, low */
+ reg_w(sd, 0x27, u1 >> 16); /* U buf.1, high */
+ reg_w(sd, 0x2a, v1 & 0xffff); /* V buf.1, low */
+ reg_w(sd, 0x2b, v1 >> 16); /* V buf.1, high */
+
+ reg_w(sd, 0x32, y1 & 0xffff); /* JPEG buf 0 low */
+ reg_w(sd, 0x33, y1 >> 16); /* JPEG buf 0 high */
+
+ reg_w(sd, 0x34, y1 & 0xffff); /* JPEG buf 1 low */
+ reg_w(sd, 0x35, y1 >> 16); /* JPEG bug 1 high */
+
+ reg_w(sd, 0x36, 0x0000);/* JPEG restart interval */
+ reg_w(sd, 0x37, 0x0804);/*JPEG VLE FIFO threshold*/
+ reg_w(sd, 0x38, 0x0000);/* disable hw up-scaling */
+ reg_w(sd, 0x3f, 0x0000); /* JPEG/MCTL test data */
}
-static int w9968cf_set_crop_window(struct sd *sd)
+static void w9968cf_set_crop_window(struct sd *sd)
{
- int ret = 0, start_cropx, start_cropy, x, y, fw, fh, cw, ch,
+ int start_cropx, start_cropy, x, y, fw, fh, cw, ch,
max_width, max_height;
if (sd->sif) {
@@ -456,8 +423,8 @@ static int w9968cf_set_crop_window(struct sd *sd)
fw = SC(sd->gspca_dev.width) / max_width;
fh = SC(sd->gspca_dev.height) / max_height;
- cw = (fw >= fh) ? max_width : SC(sd->gspca_dev.width)/fh;
- ch = (fw >= fh) ? SC(sd->gspca_dev.height)/fw : max_height;
+ cw = (fw >= fh) ? max_width : SC(sd->gspca_dev.width) / fh;
+ ch = (fw >= fh) ? SC(sd->gspca_dev.height) / fw : max_height;
sd->sensor_width = max_width;
sd->sensor_height = max_height;
@@ -465,42 +432,40 @@ static int w9968cf_set_crop_window(struct sd *sd)
x = (max_width - cw) / 2;
y = (max_height - ch) / 2;
- ret += reg_w(sd, 0x10, start_cropx + x);
- ret += reg_w(sd, 0x11, start_cropy + y);
- ret += reg_w(sd, 0x12, start_cropx + x + cw);
- ret += reg_w(sd, 0x13, start_cropy + y + ch);
-
- return ret;
+ reg_w(sd, 0x10, start_cropx + x);
+ reg_w(sd, 0x11, start_cropy + y);
+ reg_w(sd, 0x12, start_cropx + x + cw);
+ reg_w(sd, 0x13, start_cropy + y + ch);
}
-static int w9968cf_mode_init_regs(struct sd *sd)
+static void w9968cf_mode_init_regs(struct sd *sd)
{
- int ret = 0, val, vs_polarity, hs_polarity;
+ int val, vs_polarity, hs_polarity;
- ret += w9968cf_set_crop_window(sd);
+ w9968cf_set_crop_window(sd);
- ret += reg_w(sd, 0x14, sd->gspca_dev.width);
- ret += reg_w(sd, 0x15, sd->gspca_dev.height);
+ reg_w(sd, 0x14, sd->gspca_dev.width);
+ reg_w(sd, 0x15, sd->gspca_dev.height);
/* JPEG width & height */
- ret += reg_w(sd, 0x30, sd->gspca_dev.width);
- ret += reg_w(sd, 0x31, sd->gspca_dev.height);
+ reg_w(sd, 0x30, sd->gspca_dev.width);
+ reg_w(sd, 0x31, sd->gspca_dev.height);
/* Y & UV frame buffer strides (in WORD) */
if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat ==
V4L2_PIX_FMT_JPEG) {
- ret += reg_w(sd, 0x2c, sd->gspca_dev.width/2);
- ret += reg_w(sd, 0x2d, sd->gspca_dev.width/4);
+ reg_w(sd, 0x2c, sd->gspca_dev.width / 2);
+ reg_w(sd, 0x2d, sd->gspca_dev.width / 4);
} else
- ret += reg_w(sd, 0x2c, sd->gspca_dev.width);
+ reg_w(sd, 0x2c, sd->gspca_dev.width);
- ret += reg_w(sd, 0x00, 0xbf17); /* reset everything */
- ret += reg_w(sd, 0x00, 0xbf10); /* normal operation */
+ reg_w(sd, 0x00, 0xbf17); /* reset everything */
+ reg_w(sd, 0x00, 0xbf10); /* normal operation */
/* Transfer size in WORDS (for UYVY format only) */
val = sd->gspca_dev.width * sd->gspca_dev.height;
- ret += reg_w(sd, 0x3d, val & 0xffff); /* low bits */
- ret += reg_w(sd, 0x3e, val >> 16); /* high bits */
+ reg_w(sd, 0x3d, val & 0xffff); /* low bits */
+ reg_w(sd, 0x3e, val >> 16); /* high bits */
if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat ==
V4L2_PIX_FMT_JPEG) {
@@ -508,7 +473,7 @@ static int w9968cf_mode_init_regs(struct sd *sd)
jpeg_define(sd->jpeg_hdr, sd->gspca_dev.height,
sd->gspca_dev.width, 0x22); /* JPEG 420 */
jpeg_set_qual(sd->jpeg_hdr, sd->quality);
- ret += w9968cf_upload_quantizationtables(sd);
+ w9968cf_upload_quantizationtables(sd);
}
/* Video Capture Control Register */
@@ -540,19 +505,15 @@ static int w9968cf_mode_init_regs(struct sd *sd)
val |= 0x8000; /* capt. enable */
- ret += reg_w(sd, 0x16, val);
+ reg_w(sd, 0x16, val);
sd->gspca_dev.empty_packet = 0;
-
- return ret;
}
static void w9968cf_stop0(struct sd *sd)
{
- if (sd->gspca_dev.present) {
- reg_w(sd, 0x39, 0x0000); /* disable JPEG encoder */
- reg_w(sd, 0x16, 0x0000); /* stop video capture */
- }
+ reg_w(sd, 0x39, 0x0000); /* disable JPEG encoder */
+ reg_w(sd, 0x16, 0x0000); /* stop video capture */
}
/* The w9968cf docs say that a 0 sized packet means EOF (and also SOF
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-25 15:47:40 +0000