diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-25 13:59:51 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-25 13:59:51 -0800 |
commit | b31fde6db2b76a9f7f59bf016652b46cff43f8da (patch) | |
tree | 2af4c48ae97b9800604fc0b36bc5c274d46d4aa3 /include/media/v4l2-i2c-drv-legacy.h | |
parent | f31c338675872875e24f124af0689131b0c72600 (diff) | |
parent | a999337b49fcdd2c4a475e97e4b8337ebdfa4abf (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.h | 140 |
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); |