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path: root/drivers/staging/media/go7007/wis-saa7113.c
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Diffstat (limited to 'drivers/staging/media/go7007/wis-saa7113.c')
-rw-r--r--drivers/staging/media/go7007/wis-saa7113.c336
1 files changed, 336 insertions, 0 deletions
diff --git a/drivers/staging/media/go7007/wis-saa7113.c b/drivers/staging/media/go7007/wis-saa7113.c
new file mode 100644
index 000000000000..05e0e1083864
--- /dev/null
+++ b/drivers/staging/media/go7007/wis-saa7113.c
@@ -0,0 +1,336 @@
+/*
+ * 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 <linux/slab.h>
+
+#include "wis-i2c.h"
+
+struct wis_saa7113 {
+ int norm;
+ int brightness;
+ int contrast;
+ int saturation;
+ int hue;
+};
+
+static u8 initial_registers[] =
+{
+ 0x01, 0x08,
+ 0x02, 0xc0,
+ 0x03, 0x33,
+ 0x04, 0x00,
+ 0x05, 0x00,
+ 0x06, 0xe9,
+ 0x07, 0x0d,
+ 0x08, 0xd8,
+ 0x09, 0x40,
+ 0x0a, 0x80,
+ 0x0b, 0x47,
+ 0x0c, 0x40,
+ 0x0d, 0x00,
+ 0x0e, 0x01,
+ 0x0f, 0x2a,
+ 0x10, 0x40,
+ 0x11, 0x0c,
+ 0x12, 0xfe,
+ 0x13, 0x00,
+ 0x14, 0x00,
+ 0x15, 0x04,
+ 0x16, 0x00,
+ 0x17, 0x00,
+ 0x18, 0x00,
+ 0x19, 0x00,
+ 0x1a, 0x00,
+ 0x1b, 0x00,
+ 0x1c, 0x00,
+ 0x1d, 0x00,
+ 0x1e, 0x00,
+ 0x1f, 0xc8,
+ 0x40, 0x00,
+ 0x41, 0xff,
+ 0x42, 0xff,
+ 0x43, 0xff,
+ 0x44, 0xff,
+ 0x45, 0xff,
+ 0x46, 0xff,
+ 0x47, 0xff,
+ 0x48, 0xff,
+ 0x49, 0xff,
+ 0x4a, 0xff,
+ 0x4b, 0xff,
+ 0x4c, 0xff,
+ 0x4d, 0xff,
+ 0x4e, 0xff,
+ 0x4f, 0xff,
+ 0x50, 0xff,
+ 0x51, 0xff,
+ 0x52, 0xff,
+ 0x53, 0xff,
+ 0x54, 0xff,
+ 0x55, 0xff,
+ 0x56, 0xff,
+ 0x57, 0xff,
+ 0x58, 0x00,
+ 0x59, 0x54,
+ 0x5a, 0x07,
+ 0x5b, 0x83,
+ 0x5c, 0x00,
+ 0x5d, 0x00,
+ 0x5e, 0x00,
+ 0x5f, 0x00,
+ 0x60, 0x00,
+ 0x61, 0x00,
+ 0x00, 0x00, /* Terminator (reg 0x00 is read-only) */
+};
+
+static int write_reg(struct i2c_client *client, u8 reg, u8 value)
+{
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static int write_regs(struct i2c_client *client, u8 *regs)
+{
+ int i;
+
+ for (i = 0; regs[i] != 0x00; i += 2)
+ if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0)
+ return -1;
+ return 0;
+}
+
+static int wis_saa7113_command(struct i2c_client *client,
+ unsigned int cmd, void *arg)
+{
+ struct wis_saa7113 *dec = i2c_get_clientdata(client);
+
+ switch (cmd) {
+ case VIDIOC_S_INPUT:
+ {
+ int *input = arg;
+
+ i2c_smbus_write_byte_data(client, 0x02, 0xC0 | *input);
+ i2c_smbus_write_byte_data(client, 0x09,
+ *input < 6 ? 0x40 : 0x80);
+ break;
+ }
+ case VIDIOC_S_STD:
+ {
+ v4l2_std_id *input = arg;
+ dec->norm = *input;
+ if (dec->norm & V4L2_STD_NTSC) {
+ write_reg(client, 0x0e, 0x01);
+ write_reg(client, 0x10, 0x40);
+ } else if (dec->norm & V4L2_STD_PAL) {
+ write_reg(client, 0x0e, 0x01);
+ write_reg(client, 0x10, 0x48);
+ } else if (dec->norm * V4L2_STD_SECAM) {
+ write_reg(client, 0x0e, 0x50);
+ write_reg(client, 0x10, 0x48);
+ }
+ break;
+ }
+ case VIDIOC_QUERYCTRL:
+ {
+ struct v4l2_queryctrl *ctrl = arg;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+ strncpy(ctrl->name, "Brightness", sizeof(ctrl->name));
+ ctrl->minimum = 0;
+ ctrl->maximum = 255;
+ ctrl->step = 1;
+ ctrl->default_value = 128;
+ ctrl->flags = 0;
+ break;
+ case V4L2_CID_CONTRAST:
+ ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+ strncpy(ctrl->name, "Contrast", sizeof(ctrl->name));
+ ctrl->minimum = 0;
+ ctrl->maximum = 127;
+ ctrl->step = 1;
+ ctrl->default_value = 71;
+ ctrl->flags = 0;
+ break;
+ case V4L2_CID_SATURATION:
+ ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+ strncpy(ctrl->name, "Saturation", sizeof(ctrl->name));
+ ctrl->minimum = 0;
+ ctrl->maximum = 127;
+ ctrl->step = 1;
+ ctrl->default_value = 64;
+ ctrl->flags = 0;
+ break;
+ case V4L2_CID_HUE:
+ ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+ strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
+ ctrl->minimum = -128;
+ ctrl->maximum = 127;
+ ctrl->step = 1;
+ ctrl->default_value = 0;
+ ctrl->flags = 0;
+ break;
+ }
+ break;
+ }
+ case VIDIOC_S_CTRL:
+ {
+ struct v4l2_control *ctrl = arg;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ if (ctrl->value > 255)
+ dec->brightness = 255;
+ else if (ctrl->value < 0)
+ dec->brightness = 0;
+ else
+ dec->brightness = ctrl->value;
+ write_reg(client, 0x0a, dec->brightness);
+ break;
+ case V4L2_CID_CONTRAST:
+ if (ctrl->value > 127)
+ dec->contrast = 127;
+ else if (ctrl->value < 0)
+ dec->contrast = 0;
+ else
+ dec->contrast = ctrl->value;
+ write_reg(client, 0x0b, dec->contrast);
+ break;
+ 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(client, 0x0c, dec->saturation);
+ break;
+ 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(client, 0x0d, dec->hue);
+ break;
+ }
+ break;
+ }
+ case VIDIOC_G_CTRL:
+ {
+ struct v4l2_control *ctrl = arg;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ctrl->value = dec->brightness;
+ break;
+ case V4L2_CID_CONTRAST:
+ ctrl->value = dec->contrast;
+ break;
+ case V4L2_CID_SATURATION:
+ ctrl->value = dec->saturation;
+ break;
+ case V4L2_CID_HUE:
+ ctrl->value = dec->hue;
+ break;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int wis_saa7113_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ struct wis_saa7113 *dec;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ dec = kmalloc(sizeof(struct wis_saa7113), GFP_KERNEL);
+ if (dec == NULL)
+ return -ENOMEM;
+
+ dec->norm = V4L2_STD_NTSC;
+ dec->brightness = 128;
+ dec->contrast = 71;
+ dec->saturation = 64;
+ dec->hue = 0;
+ i2c_set_clientdata(client, dec);
+
+ printk(KERN_DEBUG
+ "wis-saa7113: initializing SAA7113 at address %d on %s\n",
+ client->addr, adapter->name);
+
+ if (write_regs(client, initial_registers) < 0) {
+ printk(KERN_ERR
+ "wis-saa7113: error initializing SAA7113\n");
+ kfree(dec);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int wis_saa7113_remove(struct i2c_client *client)
+{
+ struct wis_saa7113 *dec = i2c_get_clientdata(client);
+
+ kfree(dec);
+ return 0;
+}
+
+static const struct i2c_device_id wis_saa7113_id[] = {
+ { "wis_saa7113", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wis_saa7113_id);
+
+static struct i2c_driver wis_saa7113_driver = {
+ .driver = {
+ .name = "WIS SAA7113 I2C driver",
+ },
+ .probe = wis_saa7113_probe,
+ .remove = wis_saa7113_remove,
+ .command = wis_saa7113_command,
+ .id_table = wis_saa7113_id,
+};
+
+static int __init wis_saa7113_init(void)
+{
+ return i2c_add_driver(&wis_saa7113_driver);
+}
+
+static void __exit wis_saa7113_cleanup(void)
+{
+ i2c_del_driver(&wis_saa7113_driver);
+}
+
+module_init(wis_saa7113_init);
+module_exit(wis_saa7113_cleanup);
+
+MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-11 23:18:00 +0000