@@ -374,6 +374,12 @@
---help---
Support for the Techwell 2804 video decoder.
+config VIDEO_TW9903
+ tristate "Techwell 9903 video decoder"
+ depends on VIDEO_V4L2 && I2C
+ ---help---
+ Support for the Techwell 9903 video decoder.
+
config VIDEO_TVP514X
tristate "Texas Instruments TVP514x video decoder"
depends on VIDEO_V4L2 && I2C
@@ -72,6 +72,7 @@
obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o
obj-$(CONFIG_VIDEO_TW2804) += tw2804.o
+obj-$(CONFIG_VIDEO_TW9903) += tw9903.o
obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o
obj-$(CONFIG_SOC_CAMERA_MT9M111) += mt9m111.o
@@ -0,0 +1,370 @@
+/*
+ * Copyright (C) 2005-2006 Micronas USA Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <linux/ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-i2c-drv.h>
+
+MODULE_DESCRIPTION("TW9903 I2C subdev driver");
+MODULE_LICENSE("GPL v2");
+
+struct tw9903 {
+ struct v4l2_subdev sd;
+ v4l2_std_id norm;
+ int brightness;
+ int contrast;
+#if 0 /* keep */
+ int saturation;
+#endif
+ int hue;
+};
+
+static inline struct tw9903 *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct tw9903, sd);
+}
+
+static u8 initial_registers[] =
+{
+ 0x02, 0x44, /* input 1, composite */
+ 0x03, 0x92, /* correct digital format */
+ 0x04, 0x00,
+ 0x05, 0x80, /* or 0x00 for PAL */
+ 0x06, 0x40, /* second internal current reference */
+ 0x07, 0x02, /* window */
+ 0x08, 0x14, /* window */
+ 0x09, 0xf0, /* window */
+ 0x0a, 0x81, /* window */
+ 0x0b, 0xd0, /* window */
+ 0x0c, 0x8c,
+ 0x0d, 0x00, /* scaling */
+ 0x0e, 0x11, /* scaling */
+ 0x0f, 0x00, /* scaling */
+ 0x10, 0x00, /* brightness */
+ 0x11, 0x60, /* contrast */
+ 0x12, 0x01, /* sharpness */
+ 0x13, 0x7f, /* U gain */
+ 0x14, 0x5a, /* V gain */
+ 0x15, 0x00, /* hue */
+ 0x16, 0xc3, /* sharpness */
+ 0x18, 0x00,
+ 0x19, 0x58, /* vbi */
+ 0x1a, 0x80,
+ 0x1c, 0x0f, /* video norm */
+ 0x1d, 0x7f, /* video norm */
+ 0x20, 0xa0, /* clamping gain (working 0x50) */
+ 0x21, 0x22,
+ 0x22, 0xf0,
+ 0x23, 0xfe,
+ 0x24, 0x3c,
+ 0x25, 0x38,
+ 0x26, 0x44,
+ 0x27, 0x20,
+ 0x28, 0x00,
+ 0x29, 0x15,
+ 0x2a, 0xa0,
+ 0x2b, 0x44,
+ 0x2c, 0x37,
+ 0x2d, 0x00,
+ 0x2e, 0xa5, /* burst PLL control (working: a9) */
+ 0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */
+ 0x31, 0x00,
+ 0x33, 0x22,
+ 0x34, 0x11,
+ 0x35, 0x35,
+ 0x3b, 0x05,
+ 0x06, 0xc0, /* reset device */
+ 0x00, 0x00, /* Terminator (reg 0x00 is read-only) */
+};
+
+static int write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static int write_regs(struct v4l2_subdev *sd, u8 *regs)
+{
+ int i;
+
+ for (i = 0; regs[i] != 0x00; i += 2)
+ if (write_reg(sd, regs[i], regs[i + 1]) < 0)
+ return -1;
+ return 0;
+}
+
+static int tw9903_s_video_routing(struct v4l2_subdev *sd, u32 input,
+ u32 output, u32 config)
+{
+ write_reg(sd, 0x02, 0x40 | (input << 1));
+ return 0;
+}
+
+#if 0 /* keep */
+ /* The scaler on this thing seems to be horribly broken */
+ case DECODER_SET_RESOLUTION:
+ {
+ struct video_decoder_resolution *res = arg;
+ /*int hscale = 256 * 720 / res->width;*/
+ int hscale = 256 * 720 / (res->width - (res->width > 704 ? 0 : 8));
+ int vscale = 256 * (dec->norm & V4L2_STD_NTSC ? 240 : 288)
+ / res->height;
+ u8 regs[] = {
+ 0x0d, vscale & 0xff,
+ 0x0f, hscale & 0xff,
+ 0x0e, ((vscale & 0xf00) >> 4) | ((hscale & 0xf00) >> 8),
+ 0x06, 0xc0, /* reset device */
+ 0, 0,
+ };
+ printk(KERN_DEBUG "vscale is %04x, hscale is %04x\n",
+ vscale, hscale);
+ /*write_regs(client, regs);*/
+ break;
+ }
+#endif
+
+static int tw9903_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
+{
+ struct tw9903 *dec = to_state(sd);
+ u8 regs[] = {
+ 0x05, norm & V4L2_STD_NTSC ? 0x80 : 0x00,
+ 0x07, norm & V4L2_STD_NTSC ? 0x02 : 0x12,
+ 0x08, norm & V4L2_STD_NTSC ? 0x14 : 0x18,
+ 0x09, norm & V4L2_STD_NTSC ? 0xf0 : 0x20,
+ 0, 0,
+ };
+ write_regs(sd, regs);
+ dec->norm = norm;
+ return 0;
+}
+
+static int tw9903_queryctrl(struct v4l2_subdev *sd,
+ struct v4l2_queryctrl *query)
+{
+ static const u32 user_ctrls[] = {
+ V4L2_CID_BRIGHTNESS,
+ V4L2_CID_CONTRAST,
+ V4L2_CID_SATURATION,
+ V4L2_CID_HUE,
+ 0
+ };
+ static const u32 *ctrl_classes[] = {
+ user_ctrls,
+ NULL
+ };
+
+ query->id = v4l2_ctrl_next(ctrl_classes, query->id);
+ switch (query->id) {
+ case V4L2_CID_BRIGHTNESS:
+ return v4l2_ctrl_query_fill(query, -128, 127, 1, 0);
+ case V4L2_CID_CONTRAST:
+ return v4l2_ctrl_query_fill(query, 0, 255, 1, 0x60);
+#if 0 /* keep */
+ /* I don't understand how the Chroma Gain registers work... */
+ case V4L2_CID_SATURATION:
+ return v4l2_ctrl_query_fill(query, 0, 127, 1, 64);
+#endif
+ case V4L2_CID_HUE:
+ return v4l2_ctrl_query_fill(query, -128, 127, 1, 0);
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+
+static int tw9903_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct tw9903 *dec = to_state(sd);
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ if (ctrl->value > 127)
+ dec->brightness = 127;
+ else if (ctrl->value < -128)
+ dec->brightness = -128;
+ else
+ dec->brightness = ctrl->value;
+ write_reg(sd, 0x10, dec->brightness);
+ break;
+ case V4L2_CID_CONTRAST:
+ if (ctrl->value > 255)
+ dec->contrast = 255;
+ else if (ctrl->value < 0)
+ dec->contrast = 0;
+ else
+ dec->contrast = ctrl->value;
+ write_reg(sd, 0x11, dec->contrast);
+ break;
+#if 0 /* keep */
+ case V4L2_CID_SATURATION:
+ if (ctrl->value > 127)
+ dec->saturation = 127;
+ else if (ctrl->value < 0)
+ dec->saturation = 0;
+ else
+ dec->saturation = ctrl->value;
+ /*write_reg(sd, 0x0c, dec->saturation);*/
+ break;
+#endif
+ case V4L2_CID_HUE:
+ if (ctrl->value > 127)
+ dec->hue = 127;
+ else if (ctrl->value < -128)
+ dec->hue = -128;
+ else
+ dec->hue = ctrl->value;
+ write_reg(sd, 0x15, dec->hue);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int tw9903_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct tw9903 *dec = to_state(sd);
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ctrl->value = dec->brightness;
+ break;
+ case V4L2_CID_CONTRAST:
+ ctrl->value = dec->contrast;
+ break;
+#if 0 /* keep */
+ case V4L2_CID_SATURATION:
+ ctrl->value = dec->saturation;
+ break;
+#endif
+ case V4L2_CID_HUE:
+ ctrl->value = dec->hue;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int tw9903_log_status(struct v4l2_subdev *sd)
+{
+ struct tw9903 *dec = to_state(sd);
+
+ v4l2_info(sd, "Standard: %s\n", dec->norm == V4L2_STD_NTSC ? "NTSC" :
+ dec->norm == V4L2_STD_PAL ? "PAL" :
+ dec->norm == V4L2_STD_SECAM ? "SECAM" :
+ "unknown");
+ v4l2_info(sd, "Brightness: %d\n", dec->brightness);
+ v4l2_info(sd, "Contrast: %d\n", dec->contrast);
+#if 0 /* keep */
+ v4l2_info(sd, "Saturation: %d\n", dec->saturation);
+#endif
+ v4l2_info(sd, "Hue: %d\n", dec->hue);
+ return 0;
+}
+
+/* --------------------------------------------------------------------------*/
+
+static const struct v4l2_subdev_core_ops tw9903_core_ops = {
+ .log_status = tw9903_log_status,
+ .g_ctrl = tw9903_g_ctrl,
+ .s_ctrl = tw9903_s_ctrl,
+ .queryctrl = tw9903_queryctrl,
+ .s_std = tw9903_s_std,
+};
+
+static const struct v4l2_subdev_video_ops tw9903_video_ops = {
+ .s_routing = tw9903_s_video_routing,
+};
+
+static const struct v4l2_subdev_ops tw9903_ops = {
+ .core = &tw9903_core_ops,
+ .video = &tw9903_video_ops,
+};
+
+/* --------------------------------------------------------------------------*/
+
+static int tw9903_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tw9903 *dec;
+ struct v4l2_subdev *sd;
+
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ v4l2_info(client, "initializing TW9903 at address 0x%x on %s\n",
+ client->addr, client->adapter->name);
+
+ dec = kmalloc(sizeof(struct tw9903), GFP_KERNEL);
+ if (dec == NULL)
+ return -ENOMEM;
+ sd = &dec->sd;
+ v4l2_i2c_subdev_init(sd, client, &tw9903_ops);
+
+ /* Initialize tw9903 */
+ dec->norm = V4L2_STD_NTSC;
+ dec->brightness = 0;
+ dec->contrast = 0x60;
+#if 0 /* keep */
+ dec->saturation = 64;
+#endif
+ dec->hue = 0;
+
+ if (write_regs(sd, initial_registers) < 0) {
+ v4l2_err(client, "error initializing TW9903\n");
+ kfree(dec);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int tw9903_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_state(sd));
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
+static const struct i2c_device_id tw9903_id[] = {
+ { "tw9903", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tw9903_id);
+#endif
+
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+ .name = "tw9903",
+ .probe = tw9903_probe,
+ .remove = tw9903_remove,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
+ .id_table = tw9903_id,
+#endif
+};
@@ -297,7 +297,7 @@
.num_i2c_devs = 1,
.i2c_devs = {
{
- .type = "wis_tw9903",
+ .type = "tw9903",
.addr = 0x44,
},
},