Staging: add the go7007 video driver
Todo:
- checkpatch.pl cleanups
- sparse cleanups
- lots of little modules, should be merged together
and added to the build.
- testing?
- handle churn in v4l layer.
Many thanks to Ross Cohen <rcohen@snurgle.org> for cleanup patches on
this driver.
Cc: Ross Cohen <rcohen@snurgle.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/go7007/wis-tw2804.c b/drivers/staging/go7007/wis-tw2804.c
new file mode 100644
index 0000000..69ed7bf
--- /dev/null
+++ b/drivers/staging/go7007/wis-tw2804.c
@@ -0,0 +1,381 @@
+/*
+ * 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/version.h>
+#include <linux/i2c.h>
+#include <linux/videodev.h>
+#include <linux/video_decoder.h>
+#include <linux/ioctl.h>
+
+#include "wis-i2c.h"
+
+struct wis_tw2804 {
+ int channel;
+ int norm;
+ int brightness;
+ int contrast;
+ int saturation;
+ int hue;
+};
+
+static u8 global_registers[] =
+{
+ 0x39, 0x00,
+ 0x3a, 0xff,
+ 0x3b, 0x84,
+ 0x3c, 0x80,
+ 0x3d, 0x80,
+ 0x3e, 0x82,
+ 0x3f, 0x82,
+ 0xff, 0xff, /* Terminator (reg 0xff does not exist) */
+};
+
+static u8 channel_registers[] =
+{
+ 0x01, 0xc4,
+ 0x02, 0xa5,
+ 0x03, 0x20,
+ 0x04, 0xd0,
+ 0x05, 0x20,
+ 0x06, 0xd0,
+ 0x07, 0x88,
+ 0x08, 0x20,
+ 0x09, 0x07,
+ 0x0a, 0xf0,
+ 0x0b, 0x07,
+ 0x0c, 0xf0,
+ 0x0d, 0x40,
+ 0x0e, 0xd2,
+ 0x0f, 0x80,
+ 0x10, 0x80,
+ 0x11, 0x80,
+ 0x12, 0x80,
+ 0x13, 0x1f,
+ 0x14, 0x00,
+ 0x15, 0x00,
+ 0x16, 0x00,
+ 0x17, 0x00,
+ 0x18, 0xff,
+ 0x19, 0xff,
+ 0x1a, 0xff,
+ 0x1b, 0xff,
+ 0x1c, 0xff,
+ 0x1d, 0xff,
+ 0x1e, 0xff,
+ 0x1f, 0xff,
+ 0x20, 0x07,
+ 0x21, 0x07,
+ 0x22, 0x00,
+ 0x23, 0x91,
+ 0x24, 0x51,
+ 0x25, 0x03,
+ 0x26, 0x00,
+ 0x27, 0x00,
+ 0x28, 0x00,
+ 0x29, 0x00,
+ 0x2a, 0x00,
+ 0x2b, 0x00,
+ 0x2c, 0x00,
+ 0x2d, 0x00,
+ 0x2e, 0x00,
+ 0x2f, 0x00,
+ 0x30, 0x00,
+ 0x31, 0x00,
+ 0x32, 0x00,
+ 0x33, 0x00,
+ 0x34, 0x00,
+ 0x35, 0x00,
+ 0x36, 0x00,
+ 0x37, 0x00,
+ 0xff, 0xff, /* Terminator (reg 0xff does not exist) */
+};
+
+static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel)
+{
+ return i2c_smbus_write_byte_data(client, reg | (channel << 6), value);
+}
+
+static int write_regs(struct i2c_client *client, u8 *regs, int channel)
+{
+ int i;
+
+ for (i = 0; regs[i] != 0xff; i += 2)
+ if (i2c_smbus_write_byte_data(client,
+ regs[i] | (channel << 6), regs[i + 1]) < 0)
+ return -1;
+ return 0;
+}
+
+static int wis_tw2804_command(struct i2c_client *client,
+ unsigned int cmd, void *arg)
+{
+ struct wis_tw2804 *dec = i2c_get_clientdata(client);
+
+ if (cmd == DECODER_SET_CHANNEL) {
+ int *input = arg;
+
+ if (*input < 0 || *input > 3) {
+ printk(KERN_ERR "wis-tw2804: channel %d is not "
+ "between 0 and 3!\n", *input);
+ return 0;
+ }
+ dec->channel = *input;
+ printk(KERN_DEBUG "wis-tw2804: initializing TW2804 "
+ "channel %d\n", dec->channel);
+ if (dec->channel == 0 &&
+ write_regs(client, global_registers, 0) < 0) {
+ printk(KERN_ERR "wis-tw2804: error initializing "
+ "TW2804 global registers\n");
+ return 0;
+ }
+ if (write_regs(client, channel_registers, dec->channel) < 0) {
+ printk(KERN_ERR "wis-tw2804: error initializing "
+ "TW2804 channel %d\n", dec->channel);
+ return 0;
+ }
+ return 0;
+ }
+
+ if (dec->channel < 0) {
+ printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until "
+ "channel number is set\n", cmd);
+ return 0;
+ }
+
+ switch (cmd) {
+ case DECODER_SET_NORM:
+ {
+ int *input = arg;
+ u8 regs[] = {
+ 0x01, *input == VIDEO_MODE_NTSC ? 0xc4 : 0x84,
+ 0x09, *input == VIDEO_MODE_NTSC ? 0x07 : 0x04,
+ 0x0a, *input == VIDEO_MODE_NTSC ? 0xf0 : 0x20,
+ 0x0b, *input == VIDEO_MODE_NTSC ? 0x07 : 0x04,
+ 0x0c, *input == VIDEO_MODE_NTSC ? 0xf0 : 0x20,
+ 0x0d, *input == VIDEO_MODE_NTSC ? 0x40 : 0x4a,
+ 0x16, *input == VIDEO_MODE_NTSC ? 0x00 : 0x40,
+ 0x17, *input == VIDEO_MODE_NTSC ? 0x00 : 0x40,
+ 0x20, *input == VIDEO_MODE_NTSC ? 0x07 : 0x0f,
+ 0x21, *input == VIDEO_MODE_NTSC ? 0x07 : 0x0f,
+ 0xff, 0xff,
+ };
+ write_regs(client, regs, dec->channel);
+ dec->norm = *input;
+ 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 = 255;
+ ctrl->step = 1;
+ ctrl->default_value = 128;
+ 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 = 255;
+ ctrl->step = 1;
+ ctrl->default_value = 128;
+ ctrl->flags = 0;
+ break;
+ case V4L2_CID_HUE:
+ ctrl->type = V4L2_CTRL_TYPE_INTEGER;
+ strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
+ ctrl->minimum = 0;
+ ctrl->maximum = 255;
+ ctrl->step = 1;
+ ctrl->default_value = 128;
+ 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, 0x12, dec->brightness, dec->channel);
+ 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(client, 0x11, dec->contrast, dec->channel);
+ break;
+ case V4L2_CID_SATURATION:
+ if (ctrl->value > 255)
+ dec->saturation = 255;
+ else if (ctrl->value < 0)
+ dec->saturation = 0;
+ else
+ dec->saturation = ctrl->value;
+ write_reg(client, 0x10, dec->saturation, dec->channel);
+ break;
+ case V4L2_CID_HUE:
+ if (ctrl->value > 255)
+ dec->hue = 255;
+ else if (ctrl->value < 0)
+ dec->hue = 0;
+ else
+ dec->hue = ctrl->value;
+ write_reg(client, 0x0f, dec->hue, dec->channel);
+ 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 struct i2c_driver wis_tw2804_driver;
+
+static struct i2c_client wis_tw2804_client_templ = {
+ .name = "TW2804 (WIS)",
+ .driver = &wis_tw2804_driver,
+};
+
+static int wis_tw2804_detect(struct i2c_adapter *adapter, int addr, int kind)
+{
+ struct i2c_client *client;
+ struct wis_tw2804 *dec;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return 0;
+
+ client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (client == NULL)
+ return -ENOMEM;
+ memcpy(client, &wis_tw2804_client_templ,
+ sizeof(wis_tw2804_client_templ));
+ client->adapter = adapter;
+ client->addr = addr;
+
+ dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
+ if (dec == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+ dec->channel = -1;
+ dec->norm = VIDEO_MODE_NTSC;
+ dec->brightness = 128;
+ dec->contrast = 128;
+ dec->saturation = 128;
+ dec->hue = 128;
+ i2c_set_clientdata(client, dec);
+
+ printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n",
+ addr, adapter->name);
+
+ i2c_attach_client(client);
+ return 0;
+}
+
+static int wis_tw2804_detach(struct i2c_client *client)
+{
+ struct wis_tw2804 *dec = i2c_get_clientdata(client);
+ int r;
+
+ r = i2c_detach_client(client);
+ if (r < 0)
+ return r;
+
+ kfree(client);
+ kfree(dec);
+ return 0;
+}
+
+static struct i2c_driver wis_tw2804_driver = {
+ .driver = {
+ .name = "WIS TW2804 I2C driver",
+ },
+ .id = I2C_DRIVERID_WIS_TW2804,
+ .detach_client = wis_tw2804_detach,
+ .command = wis_tw2804_command,
+};
+
+static int __init wis_tw2804_init(void)
+{
+ int r;
+
+ r = i2c_add_driver(&wis_tw2804_driver);
+ if (r < 0)
+ return r;
+ return wis_i2c_add_driver(wis_tw2804_driver.id, wis_tw2804_detect);
+}
+
+static void __exit wis_tw2804_cleanup(void)
+{
+ wis_i2c_del_driver(wis_tw2804_detect);
+ i2c_del_driver(&wis_tw2804_driver);
+}
+
+module_init(wis_tw2804_init);
+module_exit(wis_tw2804_cleanup);
+
+MODULE_LICENSE("GPL v2");