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authorLinus Torvalds <torvalds@linux-foundation.org>2008-01-25 13:59:51 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-01-25 13:59:51 -0800
commitb31fde6db2b76a9f7f59bf016652b46cff43f8da (patch)
tree2af4c48ae97b9800604fc0b36bc5c274d46d4aa3 /include/media/v4l2-i2c-drv-legacy.h
parentf31c338675872875e24f124af0689131b0c72600 (diff)
parenta999337b49fcdd2c4a475e97e4b8337ebdfa4abf (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (509 commits) V4L/DVB (7078): radio: fix sf16fmi section mismatch V4L/DVB (7077): bt878: remove handcrafted PCI subsystem ID check V4L/DVB (7075): Make a local function static V4L/DVB (7074): DiB7000P: correct tuning problem for 7MHz channel V4L/DVB (7073): DiB7070: Reception quality improved V4L/DVB (7072): sets the MT2060 IF1 frequency according to EEPROM V4L/DVB (7071): DiB0700: Start streaming the right way V4L/DVB (7070): Fix some tuning problems V4L/DVB (7069): Support for myTV.t V4L/DVB (7068): Add support for WinTV Nova-T-CE driver V4L/DVB (7067): fix autoserach in the Hauppauge NOVA-T 500 V4L/DVB (7066): ASUS My Cinema U3000 Mini DVBT Tuner V4L/DVB (7065): Artec T14BR patches V4L/DVB (7063): xc5000: Fix OOPS caused by missing firmware V4L/DVB (7062): radio-si570x: Some fixes and new USB ID addition V4L/DVB (7061): radio-si470x: Some cleanups V4L/DVB (7060): em28xx: remove has_tuner V4L/DVB (7059): cx88: Ensure the tuner is reset correctly V4L/DVB (7058): IR corrections for the Pinnacle 800i V4L/DVB (7056): tuner: suppress obsolete tuner i2c address warning for XC5000 tuners ...
Diffstat (limited to 'include/media/v4l2-i2c-drv-legacy.h')
-rw-r--r--include/media/v4l2-i2c-drv-legacy.h140
1 files changed, 140 insertions, 0 deletions
diff --git a/include/media/v4l2-i2c-drv-legacy.h b/include/media/v4l2-i2c-drv-legacy.h
new file mode 100644
index 00000000000..241854229d6
--- /dev/null
+++ b/include/media/v4l2-i2c-drv-legacy.h
@@ -0,0 +1,140 @@
+/*
+ * v4l2-i2c-drv-legacy.h - contains I2C handling code that's identical
+ * for all V4L2 I2C drivers. Use this header if the
+ * I2C driver is used by both legacy drivers and
+ * drivers converted to the bus-based I2C API.
+ *
+ * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+ *
+ * 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.
+ */
+
+struct v4l2_i2c_driver_data {
+ const char * const name;
+ int driverid;
+ int (*command)(struct i2c_client *client, unsigned int cmd, void *arg);
+ int (*probe)(struct i2c_client *client);
+ int (*remove)(struct i2c_client *client);
+ int (*suspend)(struct i2c_client *client, pm_message_t state);
+ int (*resume)(struct i2c_client *client);
+ int (*legacy_probe)(struct i2c_adapter *adapter);
+ int legacy_class;
+};
+
+static struct v4l2_i2c_driver_data v4l2_i2c_data;
+static struct i2c_client_address_data addr_data;
+static struct i2c_driver v4l2_i2c_driver_legacy;
+static char v4l2_i2c_drv_name_legacy[32];
+
+static int v4l2_i2c_drv_attach_legacy(struct i2c_adapter *adapter, int address, int kind)
+{
+ return v4l2_i2c_attach(adapter, address, &v4l2_i2c_driver_legacy,
+ v4l2_i2c_drv_name_legacy, v4l2_i2c_data.probe);
+}
+
+static int v4l2_i2c_drv_probe_legacy(struct i2c_adapter *adapter)
+{
+ if (v4l2_i2c_data.legacy_probe) {
+ if (v4l2_i2c_data.legacy_probe(adapter))
+ return i2c_probe(adapter, &addr_data, v4l2_i2c_drv_attach_legacy);
+ return 0;
+ }
+ if (adapter->class & v4l2_i2c_data.legacy_class)
+ return i2c_probe(adapter, &addr_data, v4l2_i2c_drv_attach_legacy);
+ return 0;
+}
+
+static int v4l2_i2c_drv_detach_legacy(struct i2c_client *client)
+{
+ int err;
+
+ if (v4l2_i2c_data.remove)
+ v4l2_i2c_data.remove(client);
+
+ err = i2c_detach_client(client);
+ if (err)
+ return err;
+ kfree(client);
+
+ return 0;
+}
+
+static int v4l2_i2c_drv_suspend_helper(struct i2c_client *client, pm_message_t state)
+{
+ return v4l2_i2c_data.suspend ? v4l2_i2c_data.suspend(client, state) : 0;
+}
+
+static int v4l2_i2c_drv_resume_helper(struct i2c_client *client)
+{
+ return v4l2_i2c_data.resume ? v4l2_i2c_data.resume(client) : 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+/* i2c implementation */
+static struct i2c_driver v4l2_i2c_driver_legacy = {
+ .driver = {
+ .owner = THIS_MODULE,
+ },
+ .attach_adapter = v4l2_i2c_drv_probe_legacy,
+ .detach_client = v4l2_i2c_drv_detach_legacy,
+ .suspend = v4l2_i2c_drv_suspend_helper,
+ .resume = v4l2_i2c_drv_resume_helper,
+};
+
+/* ----------------------------------------------------------------------- */
+
+/* i2c implementation */
+static struct i2c_driver v4l2_i2c_driver = {
+ .suspend = v4l2_i2c_drv_suspend_helper,
+ .resume = v4l2_i2c_drv_resume_helper,
+};
+
+static int __init v4l2_i2c_drv_init(void)
+{
+ int err;
+
+ strlcpy(v4l2_i2c_drv_name_legacy, v4l2_i2c_data.name, sizeof(v4l2_i2c_drv_name_legacy));
+ strlcat(v4l2_i2c_drv_name_legacy, "'", sizeof(v4l2_i2c_drv_name_legacy));
+
+ if (v4l2_i2c_data.legacy_class == 0)
+ v4l2_i2c_data.legacy_class = I2C_CLASS_TV_ANALOG;
+
+ v4l2_i2c_driver_legacy.driver.name = v4l2_i2c_drv_name_legacy;
+ v4l2_i2c_driver_legacy.id = v4l2_i2c_data.driverid;
+ v4l2_i2c_driver_legacy.command = v4l2_i2c_data.command;
+ err = i2c_add_driver(&v4l2_i2c_driver_legacy);
+
+ if (err)
+ return err;
+ v4l2_i2c_driver.driver.name = v4l2_i2c_data.name;
+ v4l2_i2c_driver.id = v4l2_i2c_data.driverid;
+ v4l2_i2c_driver.command = v4l2_i2c_data.command;
+ v4l2_i2c_driver.probe = v4l2_i2c_data.probe;
+ v4l2_i2c_driver.remove = v4l2_i2c_data.remove;
+ err = i2c_add_driver(&v4l2_i2c_driver);
+ if (err)
+ i2c_del_driver(&v4l2_i2c_driver_legacy);
+ return err;
+}
+
+static void __exit v4l2_i2c_drv_cleanup(void)
+{
+ i2c_del_driver(&v4l2_i2c_driver_legacy);
+ i2c_del_driver(&v4l2_i2c_driver);
+}
+
+module_init(v4l2_i2c_drv_init);
+module_exit(v4l2_i2c_drv_cleanup);