V4L/DVB (9985): gspca - spca561: Cleanup source.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/gspca/spca561.c b/drivers/media/video/gspca/spca561.c
index c3de4e4..3a27faf 100644 (file)
--- a/drivers/media/video/gspca/spca561.c
+++ b/drivers/media/video/gspca/spca561.c
@@ -146,98 +146,7 @@ static struct v4l2_pix_format sif_072a_mode[] = {
 #define SPCA561_SNAPBIT 0x20
 #define SPCA561_SNAPCTRL 0x40
 
-static void reg_w_val(struct usb_device *dev, __u16 index, __u8 value)
-{
-       int ret;
-
-       ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
-                             0,                /* request */
-                             USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-                             value, index, NULL, 0, 500);
-       PDEBUG(D_USBO, "reg write: 0x%02x:0x%02x", index, value);
-       if (ret < 0)
-               PDEBUG(D_ERR, "reg write: error %d", ret);
-}
-
-static void write_vector(struct gspca_dev *gspca_dev,
-                       const __u16 data[][2])
-{
-       struct usb_device *dev = gspca_dev->dev;
-       int i;
-
-       i = 0;
-       while (data[i][1] != 0) {
-               reg_w_val(dev, data[i][1], data[i][0]);
-               i++;
-       }
-}
-
-/* read 'len' bytes to gspca_dev->usb_buf */
-static void reg_r(struct gspca_dev *gspca_dev,
-                 __u16 index, __u16 length)
-{
-       usb_control_msg(gspca_dev->dev,
-                       usb_rcvctrlpipe(gspca_dev->dev, 0),
-                       0,                      /* request */
-                       USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-                       0,                      /* value */
-                       index, gspca_dev->usb_buf, length, 500);
-}
-
-static void reg_w_buf(struct gspca_dev *gspca_dev,
-                     __u16 index, const __u8 *buffer, __u16 len)
-{
-       memcpy(gspca_dev->usb_buf, buffer, len);
-       usb_control_msg(gspca_dev->dev,
-                       usb_sndctrlpipe(gspca_dev->dev, 0),
-                       0,                      /* request */
-                       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-                       0,                      /* value */
-                       index, gspca_dev->usb_buf, len, 500);
-}
-
-static void i2c_write(struct gspca_dev *gspca_dev, __u16 valeur, __u16 reg)
-{
-       int retry = 60;
-       __u8 DataLow;
-       __u8 DataHight;
-
-       DataLow = valeur;
-       DataHight = valeur >> 8;
-       reg_w_val(gspca_dev->dev, 0x8801, reg);
-       reg_w_val(gspca_dev->dev, 0x8805, DataLow);
-       reg_w_val(gspca_dev->dev, 0x8800, DataHight);
-       while (retry--) {
-               reg_r(gspca_dev, 0x8803, 1);
-               if (!gspca_dev->usb_buf[0])
-                       break;
-       }
-}
-
-static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode)
-{
-       int retry = 60;
-       __u8 value;
-       __u8 vallsb;
-
-       reg_w_val(gspca_dev->dev, 0x8804, 0x92);
-       reg_w_val(gspca_dev->dev, 0x8801, reg);
-       reg_w_val(gspca_dev->dev, 0x8802, (mode | 0x01));
-       do {
-               reg_r(gspca_dev, 0x8803, 1);
-               if (!gspca_dev->usb_buf[0])
-                       break;
-       } while (--retry);
-       if (retry == 0)
-               return -1;
-       reg_r(gspca_dev, 0x8800, 1);
-       value = gspca_dev->usb_buf[0];
-       reg_r(gspca_dev, 0x8805, 1);
-       vallsb = gspca_dev->usb_buf[0];
-       return ((int) value << 8) | vallsb;
-}
-
-static const __u16 spca561_init_data[][2] = {
+static const __u16 rev72a_init_data[][2] = {
        {0x0000, 0x8114},       /* Software GPIO output data */
        {0x0001, 0x8114},       /* Software GPIO output data */
        {0x0000, 0x8112},       /* Some kind of reset */
@@ -324,7 +233,7 @@ static const __u16 spca561_init_data[][2] = {
 
        {0x0002, 0x865b},       /* Horizontal offset for valid pixels */
        {0x0003, 0x865c},       /* Vertical offset for valid lines */
-       /***************//* sensor active */
+       /***************/               /* sensor active */
        {0x0003, 0x8801},       /* 0x03 <- 0x01 0x21 //289 */
        {0x0021, 0x8805},
        {0x0001, 0x8800},
@@ -434,7 +343,6 @@ static const __u16 spca561_init_data[][2] = {
        {}
 };
 
-
 /******************** QC Express etch2 stuff ********************/
 static const __u16 Pb100_1map8300[][2] = {
        /* reg, value */
@@ -515,22 +423,103 @@ static const __u16 spca561_161rev12A_data2[][2] = {
        {}
 };
 
-static void sensor_mapwrite(struct gspca_dev *gspca_dev,
-                           const __u16 sensormap[][2])
+static void reg_w_val(struct usb_device *dev, __u16 index, __u8 value)
+{
+       int ret;
+
+       ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+                             0,                /* request */
+                             USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                             value, index, NULL, 0, 500);
+       PDEBUG(D_USBO, "reg write: 0x%02x:0x%02x", index, value);
+       if (ret < 0)
+               PDEBUG(D_ERR, "reg write: error %d", ret);
+}
+
+static void write_vector(struct gspca_dev *gspca_dev,
+                       const __u16 data[][2])
 {
-       int i = 0;
-       __u8 usbval[2];
+       struct usb_device *dev = gspca_dev->dev;
+       int i;
 
-       while (sensormap[i][0]) {
-               usbval[0] = sensormap[i][1];
-               usbval[1] = sensormap[i][1] >> 8;
-               reg_w_buf(gspca_dev, sensormap[i][0], usbval, 2);
+       i = 0;
+       while (data[i][1] != 0) {
+               reg_w_val(dev, data[i][1], data[i][0]);
                i++;
        }
 }
+
+/* read 'len' bytes to gspca_dev->usb_buf */
+static void reg_r(struct gspca_dev *gspca_dev,
+                 __u16 index, __u16 length)
+{
+       usb_control_msg(gspca_dev->dev,
+                       usb_rcvctrlpipe(gspca_dev->dev, 0),
+                       0,                      /* request */
+                       USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                       0,                      /* value */
+                       index, gspca_dev->usb_buf, length, 500);
+}
+
+/* write 'len' bytes from gspca_dev->usb_buf */
+static void reg_w_buf(struct gspca_dev *gspca_dev,
+                     __u16 index, __u16 len)
+{
+       usb_control_msg(gspca_dev->dev,
+                       usb_sndctrlpipe(gspca_dev->dev, 0),
+                       0,                      /* request */
+                       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+                       0,                      /* value */
+                       index, gspca_dev->usb_buf, len, 500);
+}
+
+static void i2c_write(struct gspca_dev *gspca_dev, __u16 value, __u16 reg)
+{
+       int retry = 60;
+
+       reg_w_val(gspca_dev->dev, 0x8801, reg);
+       reg_w_val(gspca_dev->dev, 0x8805, value);
+       reg_w_val(gspca_dev->dev, 0x8800, value >> 8);
+       do {
+               reg_r(gspca_dev, 0x8803, 1);
+               if (!gspca_dev->usb_buf[0])
+                       return;
+       } while (--retry);
+}
+
+static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode)
+{
+       int retry = 60;
+       __u8 value;
+
+       reg_w_val(gspca_dev->dev, 0x8804, 0x92);
+       reg_w_val(gspca_dev->dev, 0x8801, reg);
+       reg_w_val(gspca_dev->dev, 0x8802, mode | 0x01);
+       do {
+               reg_r(gspca_dev, 0x8803, 1);
+               if (!gspca_dev->usb_buf[0]) {
+                       reg_r(gspca_dev, 0x8800, 1);
+                       value = gspca_dev->usb_buf[0];
+                       reg_r(gspca_dev, 0x8805, 1);
+                       return ((int) value << 8) | gspca_dev->usb_buf[0];
+               }
+       } while (--retry);
+       return -1;
+}
+
+static void sensor_mapwrite(struct gspca_dev *gspca_dev,
+                           const __u16 (*sensormap)[2])
+{
+       while ((*sensormap)[0]) {
+               gspca_dev->usb_buf[0] = (*sensormap)[1];
+               gspca_dev->usb_buf[1] = (*sensormap)[1] >> 8;
+               reg_w_buf(gspca_dev, (*sensormap)[0], 2);
+               sensormap++;
+       }
+}
+
 static void init_161rev12A(struct gspca_dev *gspca_dev)
 {
-/*     sensor_reset(gspca_dev);        (not in win) */
        write_vector(gspca_dev, spca561_161rev12A_data1);
        sensor_mapwrite(gspca_dev, Pb100_1map8300);
 /*fixme: should be in sd_start*/
@@ -598,7 +587,7 @@ static int sd_init_12a(struct gspca_dev *gspca_dev)
 static int sd_init_72a(struct gspca_dev *gspca_dev)
 {
        PDEBUG(D_STREAM, "Chip revision: 072a");
-       write_vector(gspca_dev, spca561_init_data);
+       write_vector(gspca_dev, rev72a_init_data);
        return 0;
 }
 
@@ -621,8 +610,9 @@ static void setcontrast(struct gspca_dev *gspca_dev)
                static const __u8 Reg8391[] =
                        { 0x92, 0x30, 0x20, 0x00, 0x0c, 0x00, 0x00, 0x00 };
 
-               reg_w_buf(gspca_dev, 0x8391, Reg8391, 8);
-               reg_w_buf(gspca_dev, 0x8390, Reg8391, 8);
+               memcpy(gspca_dev->usb_buf, Reg8391, 8);
+               reg_w_buf(gspca_dev, 0x8391, 8);
+               reg_w_buf(gspca_dev, 0x8390, 8);
                break;
            }
        }
@@ -649,7 +639,6 @@ static void setexposure(struct gspca_dev *gspca_dev)
        struct sd *sd = (struct sd *) gspca_dev;
        int expo;
        int clock_divider;
-       __u8 data[2];
 
        /* Register 0x8309 controls exposure for the spca561,
           the basic exposure setting goes from 1-2047, where 1 is completely
@@ -673,20 +662,19 @@ static void setexposure(struct gspca_dev *gspca_dev)
                clock_divider = 3;
        }
        expo |= clock_divider << 11;
-       data[0] = expo;
-       data[1] = expo >> 8;
-       reg_w_buf(gspca_dev, 0x8309, data, 2);
+       gspca_dev->usb_buf[0] = expo;
+       gspca_dev->usb_buf[1] = expo >> 8;
+       reg_w_buf(gspca_dev, 0x8309, 2);
 }
 
 /* rev 12a only */
 static void setgain(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
-       __u8 data[2];
 
-       data[0] = sd->gain;
-       data[1] = 0;
-       reg_w_buf(gspca_dev, 0x8335, data, 2);
+       gspca_dev->usb_buf[0] = sd->gain;
+       gspca_dev->usb_buf[1] = 0;
+       reg_w_buf(gspca_dev, 0x8335, 2);
 }
 
 static void setautogain(struct gspca_dev *gspca_dev)
@@ -716,7 +704,9 @@ static int sd_start_12a(struct gspca_dev *gspca_dev)
                 * is sufficient to push raw frames at ~20fps */
                reg_w_val(dev, 0x8500, mode);
        }               /* -- qq@kuku.eu.org */
-       reg_w_buf(gspca_dev, 0x8307, Reg8307, 2);
+
+       memcpy(gspca_dev->usb_buf, Reg8307, sizeof Reg8307);
+       reg_w_buf(gspca_dev, 0x8307, sizeof Reg8307);
        reg_w_val(gspca_dev->dev, 0x8700, Clck);
                                        /* 0x8f 0x85 0x27 clock */
        reg_w_val(gspca_dev->dev, 0x8112, 0x1e | 0x20);
@@ -791,7 +781,6 @@ static void do_autogain(struct gspca_dev *gspca_dev)
        __u8 luma_mean = 110;
        __u8 luma_delta = 20;
        __u8 spring = 4;
-       __u8 reg8339[2];
 
        if (sd->ag_cnt < 0)
                return;
@@ -834,13 +823,13 @@ static void do_autogain(struct gspca_dev *gspca_dev)
 
                        if (gainG > 0x3f)
                                gainG = 0x3f;
-                       else if (gainG < 4)
+                       else if (gainG < 3)
                                gainG = 3;
                        i2c_write(gspca_dev, gainG, 0x35);
 
-                       if (expotimes >= 0x0256)
+                       if (expotimes > 0x0256)
                                expotimes = 0x0256;
-                       else if (expotimes < 4)
+                       else if (expotimes < 3)
                                expotimes = 3;
                        i2c_write(gspca_dev, expotimes | pixelclk, 0x09);
                }
@@ -848,13 +837,13 @@ static void do_autogain(struct gspca_dev *gspca_dev)
        case Rev012A:
                reg_r(gspca_dev, 0x8330, 2);
                if (gspca_dev->usb_buf[1] > 0x08) {
-                       reg8339[0] = ++sd->expo12a;
-                       reg8339[1] = 0;
-                       reg_w_buf(gspca_dev, 0x8339, reg8339, 2);
+                       gspca_dev->usb_buf[0] = ++sd->expo12a;
+                       gspca_dev->usb_buf[1] = 0;
+                       reg_w_buf(gspca_dev, 0x8339, 2);
                } else if (gspca_dev->usb_buf[1] < 0x02) {
-                       reg8339[0] = --sd->expo12a;
-                       reg8339[1] = 0;
-                       reg_w_buf(gspca_dev, 0x8339, reg8339, 2);
+                       gspca_dev->usb_buf[0] = --sd->expo12a;
+                       gspca_dev->usb_buf[1] = 0;
+                       reg_w_buf(gspca_dev, 0x8339, 2);
                }
                break;
        }
@@ -867,8 +856,8 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 {
        struct sd *sd = (struct sd *) gspca_dev;
 
-       switch (data[0]) {
-       case 0:         /* start of frame */
+       switch (data[0]) {                      /* sequence number */
+       case 0:                                 /* start of frame */
                frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
                                        data, 0);
                data += SPCA561_OFFSET_DATA;
@@ -890,8 +879,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
                                                frame, data, len);
                }
                return;
-       case 0xff:              /* drop */
-/*             gspca_dev->last_packet_type = DISCARD_PACKET; */
+       case 0xff:                      /* drop (empty mpackets) */
                return;
        }
        data++;