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path: root/drivers/staging/media/sn9c102/sn9c102_pas106b.c
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Diffstat (limited to 'drivers/staging/media/sn9c102/sn9c102_pas106b.c')
-rw-r--r--drivers/staging/media/sn9c102/sn9c102_pas106b.c302
1 files changed, 302 insertions, 0 deletions
diff --git a/drivers/staging/media/sn9c102/sn9c102_pas106b.c b/drivers/staging/media/sn9c102/sn9c102_pas106b.c
new file mode 100644
index 000000000000..81cd969c1b7b
--- /dev/null
+++ b/drivers/staging/media/sn9c102/sn9c102_pas106b.c
@@ -0,0 +1,302 @@
+/***************************************************************************
+ * Plug-in for PAS106B image sensor connected to the SN9C1xx PC Camera *
+ * Controllers *
+ * *
+ * Copyright (C) 2004-2007 by Luca Risolia <luca.risolia@studio.unibo.it> *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the Free Software *
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
+ ***************************************************************************/
+
+#include <linux/delay.h>
+#include "sn9c102_sensor.h"
+#include "sn9c102_devtable.h"
+
+
+static int pas106b_init(struct sn9c102_device* cam)
+{
+ int err = 0;
+
+ err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11},
+ {0x00, 0x14}, {0x20, 0x17},
+ {0x20, 0x19}, {0x09, 0x18});
+
+ err += sn9c102_i2c_write(cam, 0x02, 0x0c);
+ err += sn9c102_i2c_write(cam, 0x05, 0x5a);
+ err += sn9c102_i2c_write(cam, 0x06, 0x88);
+ err += sn9c102_i2c_write(cam, 0x07, 0x80);
+ err += sn9c102_i2c_write(cam, 0x10, 0x06);
+ err += sn9c102_i2c_write(cam, 0x11, 0x06);
+ err += sn9c102_i2c_write(cam, 0x12, 0x00);
+ err += sn9c102_i2c_write(cam, 0x14, 0x02);
+ err += sn9c102_i2c_write(cam, 0x13, 0x01);
+
+ msleep(400);
+
+ return err;
+}
+
+
+static int pas106b_get_ctrl(struct sn9c102_device* cam,
+ struct v4l2_control* ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE:
+ {
+ int r1 = sn9c102_i2c_read(cam, 0x03),
+ r2 = sn9c102_i2c_read(cam, 0x04);
+ if (r1 < 0 || r2 < 0)
+ return -EIO;
+ ctrl->value = (r1 << 4) | (r2 & 0x0f);
+ }
+ return 0;
+ case V4L2_CID_RED_BALANCE:
+ if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0)
+ return -EIO;
+ ctrl->value &= 0x1f;
+ return 0;
+ case V4L2_CID_BLUE_BALANCE:
+ if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0)
+ return -EIO;
+ ctrl->value &= 0x1f;
+ return 0;
+ case V4L2_CID_GAIN:
+ if ((ctrl->value = sn9c102_i2c_read(cam, 0x0e)) < 0)
+ return -EIO;
+ ctrl->value &= 0x1f;
+ return 0;
+ case V4L2_CID_CONTRAST:
+ if ((ctrl->value = sn9c102_i2c_read(cam, 0x0f)) < 0)
+ return -EIO;
+ ctrl->value &= 0x07;
+ return 0;
+ case SN9C102_V4L2_CID_GREEN_BALANCE:
+ if ((ctrl->value = sn9c102_i2c_read(cam, 0x0a)) < 0)
+ return -EIO;
+ ctrl->value = (ctrl->value & 0x1f) << 1;
+ return 0;
+ case SN9C102_V4L2_CID_DAC_MAGNITUDE:
+ if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0)
+ return -EIO;
+ ctrl->value &= 0xf8;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+
+static int pas106b_set_ctrl(struct sn9c102_device* cam,
+ const struct v4l2_control* ctrl)
+{
+ int err = 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE:
+ err += sn9c102_i2c_write(cam, 0x03, ctrl->value >> 4);
+ err += sn9c102_i2c_write(cam, 0x04, ctrl->value & 0x0f);
+ break;
+ case V4L2_CID_RED_BALANCE:
+ err += sn9c102_i2c_write(cam, 0x0c, ctrl->value);
+ break;
+ case V4L2_CID_BLUE_BALANCE:
+ err += sn9c102_i2c_write(cam, 0x09, ctrl->value);
+ break;
+ case V4L2_CID_GAIN:
+ err += sn9c102_i2c_write(cam, 0x0e, ctrl->value);
+ break;
+ case V4L2_CID_CONTRAST:
+ err += sn9c102_i2c_write(cam, 0x0f, ctrl->value);
+ break;
+ case SN9C102_V4L2_CID_GREEN_BALANCE:
+ err += sn9c102_i2c_write(cam, 0x0a, ctrl->value >> 1);
+ err += sn9c102_i2c_write(cam, 0x0b, ctrl->value >> 1);
+ break;
+ case SN9C102_V4L2_CID_DAC_MAGNITUDE:
+ err += sn9c102_i2c_write(cam, 0x08, ctrl->value << 3);
+ break;
+ default:
+ return -EINVAL;
+ }
+ err += sn9c102_i2c_write(cam, 0x13, 0x01);
+
+ return err ? -EIO : 0;
+}
+
+
+static int pas106b_set_crop(struct sn9c102_device* cam,
+ const struct v4l2_rect* rect)
+{
+ struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
+ int err = 0;
+ u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4,
+ v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3;
+
+ err += sn9c102_write_reg(cam, h_start, 0x12);
+ err += sn9c102_write_reg(cam, v_start, 0x13);
+
+ return err;
+}
+
+
+static int pas106b_set_pix_format(struct sn9c102_device* cam,
+ const struct v4l2_pix_format* pix)
+{
+ int err = 0;
+
+ if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
+ err += sn9c102_write_reg(cam, 0x2c, 0x17);
+ else
+ err += sn9c102_write_reg(cam, 0x20, 0x17);
+
+ return err;
+}
+
+
+static const struct sn9c102_sensor pas106b = {
+ .name = "PAS106B",
+ .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
+ .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
+ .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE,
+ .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ,
+ .interface = SN9C102_I2C_2WIRES,
+ .i2c_slave_id = 0x40,
+ .init = &pas106b_init,
+ .qctrl = {
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "exposure",
+ .minimum = 0x125,
+ .maximum = 0xfff,
+ .step = 0x001,
+ .default_value = 0x140,
+ .flags = 0,
+ },
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "global gain",
+ .minimum = 0x00,
+ .maximum = 0x1f,
+ .step = 0x01,
+ .default_value = 0x0d,
+ .flags = 0,
+ },
+ {
+ .id = V4L2_CID_CONTRAST,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "contrast",
+ .minimum = 0x00,
+ .maximum = 0x07,
+ .step = 0x01,
+ .default_value = 0x00, /* 0x00~0x03 have same effect */
+ .flags = 0,
+ },
+ {
+ .id = V4L2_CID_RED_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "red balance",
+ .minimum = 0x00,
+ .maximum = 0x1f,
+ .step = 0x01,
+ .default_value = 0x04,
+ .flags = 0,
+ },
+ {
+ .id = V4L2_CID_BLUE_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "blue balance",
+ .minimum = 0x00,
+ .maximum = 0x1f,
+ .step = 0x01,
+ .default_value = 0x06,
+ .flags = 0,
+ },
+ {
+ .id = SN9C102_V4L2_CID_GREEN_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "green balance",
+ .minimum = 0x00,
+ .maximum = 0x3e,
+ .step = 0x02,
+ .default_value = 0x02,
+ .flags = 0,
+ },
+ {
+ .id = SN9C102_V4L2_CID_DAC_MAGNITUDE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "DAC magnitude",
+ .minimum = 0x00,
+ .maximum = 0x1f,
+ .step = 0x01,
+ .default_value = 0x01,
+ .flags = 0,
+ },
+ },
+ .get_ctrl = &pas106b_get_ctrl,
+ .set_ctrl = &pas106b_set_ctrl,
+ .cropcap = {
+ .bounds = {
+ .left = 0,
+ .top = 0,
+ .width = 352,
+ .height = 288,
+ },
+ .defrect = {
+ .left = 0,
+ .top = 0,
+ .width = 352,
+ .height = 288,
+ },
+ },
+ .set_crop = &pas106b_set_crop,
+ .pix_format = {
+ .width = 352,
+ .height = 288,
+ .pixelformat = V4L2_PIX_FMT_SBGGR8,
+ .priv = 8, /* we use this field as 'bits per pixel' */
+ },
+ .set_pix_format = &pas106b_set_pix_format
+};
+
+
+int sn9c102_probe_pas106b(struct sn9c102_device* cam)
+{
+ int r0 = 0, r1 = 0;
+ unsigned int pid = 0;
+
+ /*
+ Minimal initialization to enable the I2C communication
+ NOTE: do NOT change the values!
+ */
+ if (sn9c102_write_const_regs(cam,
+ {0x01, 0x01}, /* sensor power down */
+ {0x00, 0x01}, /* sensor power on */
+ {0x28, 0x17})) /* sensor clock at 24 MHz */
+ return -EIO;
+
+ r0 = sn9c102_i2c_try_read(cam, &pas106b, 0x00);
+ r1 = sn9c102_i2c_try_read(cam, &pas106b, 0x01);
+ if (r0 < 0 || r1 < 0)
+ return -EIO;
+
+ pid = (r0 << 11) | ((r1 & 0xf0) >> 4);
+ if (pid != 0x007)
+ return -ENODEV;
+
+ sn9c102_attach_sensor(cam, &pas106b);
+
+ return 0;
+}
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