From 07421cabdc62519d0f747149b7c9b425b4d746cd Mon Sep 17 00:00:00 2001 From: Grant Coady Date: Sun, 6 Nov 2005 23:13:06 +0100 Subject: [PATCH] hwmon: remove deprecated sysfs names of adm1025 and adm1026 drivers, hwmon, adm1025 and adm1026: remove deprecated sysfs names. these names have been listed for removal for six months, time for them to go Signed-off-by: Grant Coady Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/feature-removal-schedule.txt | 9 --------- 1 file changed, 9 deletions(-) (limited to 'Documentation') diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 9b74319..cb13b96 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -82,15 +82,6 @@ Who: Mauro Carvalho Chehab --------------------------- -What: i2c sysfs name change: in1_ref, vid deprecated in favour of cpu0_vid -When: November 2005 -Files: drivers/i2c/chips/adm1025.c, drivers/i2c/chips/adm1026.c -Why: Match the other drivers' name for the same function, duplicate names - will be available until removal of old names. -Who: Grant Coady - ---------------------------- - What: remove EXPORT_SYMBOL(panic_timeout) When: April 2006 Files: kernel/panic.c -- cgit v1.1 From 5b319400f5e2cd31a82b38405856ff2b46a9bb83 Mon Sep 17 00:00:00 2001 From: "Mark M. Hoffman" Date: Sat, 26 Nov 2005 20:10:56 +0100 Subject: [PATCH] hwmon: Clarify the W83627THF VID documentation This patch clarifies the W83627THF VID documentation. Signed-off-by: Mark M. Hoffman Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/hwmon/w83627hf | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'Documentation') diff --git a/Documentation/hwmon/w83627hf b/Documentation/hwmon/w83627hf index 78f37c2..5d23776 100644 --- a/Documentation/hwmon/w83627hf +++ b/Documentation/hwmon/w83627hf @@ -54,13 +54,16 @@ If you really want i2c accesses for these Super I/O chips, use the w83781d driver. However this is not the preferred method now that this ISA driver has been developed. -Technically, the w83627thf does not support a VID reading. However, it's -possible or even likely that your mainboard maker has routed these signals -to a specific set of general purpose IO pins (the Asus P4C800-E is one such -board). The w83627thf driver now interprets these as VID. If the VID on -your board doesn't work, first see doc/vid in the lm_sensors package. If -that still doesn't help, email us at lm-sensors@lm-sensors.org. +The w83627_HF_ uses pins 110-106 as VID0-VID4. The w83627_THF_ uses the +same pins as GPIO[0:4]. Technically, the w83627_THF_ does not support a +VID reading. However the two chips have the identical 128 pin package. So, +it is possible or even likely for a w83627thf to have the VID signals routed +to these pins despite their not being labeled for that purpose. Therefore, +the w83627thf driver interprets these as VID. If the VID on your board +doesn't work, first see doc/vid in the lm_sensors package[1]. If that still +doesn't help, you may just ignore the bogus VID reading with no harm done. -For further information on this driver see the w83781d driver -documentation. +For further information on this driver see the w83781d driver documentation. + +[1] http://www2.lm-sensors.nu/~lm78/cvs/browse.cgi/lm_sensors2/doc/vid -- cgit v1.1 From 1d26f455eb0db0bf4d4b7177547f4310b645a32a Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Sat, 26 Nov 2005 20:18:43 +0100 Subject: [PATCH] i2c: Add support for Barco LPT->DVI to i2c-parport The following patch adds support for the Barco LPT->DVI I2C adapter to the i2c-parport driver. Signed-off-by: Peter Korsgaard Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/busses/i2c-parport | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/i2c/busses/i2c-parport b/Documentation/i2c/busses/i2c-parport index 9f1d008..d9f23c0 100644 --- a/Documentation/i2c/busses/i2c-parport +++ b/Documentation/i2c/busses/i2c-parport @@ -17,6 +17,7 @@ It currently supports the following devices: * Velleman K8000 adapter * ELV adapter * Analog Devices evaluation boards (ADM1025, ADM1030, ADM1031, ADM1032) + * Barco LPT->DVI (K5800236) adapter These devices use different pinout configurations, so you have to tell the driver what you have, using the type module parameter. There is no -- cgit v1.1 From 8a9947552d43b0d20d5fa23ac0ba435d526be454 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sat, 26 Nov 2005 20:28:06 +0100 Subject: [PATCH] i2c: Drop i2c_driver.flags, 2 of 3 Just about every i2c chip driver sets the I2C_DF_NOTIFY flag, so we can simply make it the default and drop the flag. If any driver really doesn't want to be notified when i2c adapters are added, that driver can simply omit to set .attach_adapter. This approach is also more robust as it prevents accidental NULL pointer dereferences. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/porting-clients | 3 +++ Documentation/i2c/writing-clients | 5 ----- 2 files changed, 3 insertions(+), 5 deletions(-) (limited to 'Documentation') diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients index 184fac2..64c610b 100644 --- a/Documentation/i2c/porting-clients +++ b/Documentation/i2c/porting-clients @@ -109,6 +109,9 @@ Technical changes: there is a MODULE_LICENSE() line, at the bottom of the file (after MODULE_AUTHOR() and MODULE_DESCRIPTION(), in this order). +* [Driver] The flags field of the i2c_driver structure is gone. + I2C_DF_NOTIFY is now the default behavior. + Coding policy: * [Copyright] Use (C), not (c), for copyright. diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients index d19993c..59d2c16 100644 --- a/Documentation/i2c/writing-clients +++ b/Documentation/i2c/writing-clients @@ -27,7 +27,6 @@ address. static struct i2c_driver foo_driver = { .owner = THIS_MODULE, .name = "Foo version 2.3 driver", - .flags = I2C_DF_NOTIFY, .attach_adapter = &foo_attach_adapter, .detach_client = &foo_detach_client, .command = &foo_command /* may be NULL */ @@ -36,10 +35,6 @@ static struct i2c_driver foo_driver = { The name field must match the driver name, including the case. It must not contain spaces, and may be up to 31 characters long. -Don't worry about the flags field; just put I2C_DF_NOTIFY into it. This -means that your driver will be notified when new adapters are found. -This is almost always what you want. - All other fields are for call-back functions which will be explained below. -- cgit v1.1 From cf02df770228350254251fde520007a2709db785 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sat, 26 Nov 2005 21:03:41 +0100 Subject: [PATCH] i2c: Rework client usage count, 3 of 3 Do not limit the usage count of i2c clients to 1. In other words, change the client usage count behavior from the old I2C_CLIENT_ALLOW_USE to the old I2C_CLIENT_ALLOW_MULTIPLE_USE. The rationale is that no driver actually needs the limiting behavior, and the unlimiting behavior is slightly easier to implement. Update the documentation to reflect this change. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/porting-clients | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients index 64c610b..6b07f23 100644 --- a/Documentation/i2c/porting-clients +++ b/Documentation/i2c/porting-clients @@ -92,6 +92,7 @@ Technical changes: Drop client->id. Drop any 24RF08 corruption prevention you find, as this is now done at the i2c-core level, and doing it twice voids it. + Don't add I2C_CLIENT_ALLOW_USE to client->flags, it's the default now. * [Init] Limits must not be set by the driver (can be done later in user-space). Chip should not be reset default (although a module -- cgit v1.1 From 92b429461228f0f06a994dd3d4ccf1c9ff7596bd Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sat, 26 Nov 2005 21:05:17 +0100 Subject: [PATCH] i2c: Chip driver porting guide update Update Documentation/i2c/porting-clients. Many recent changes to the i2c and hwmon subsystems were never reported there. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/porting-clients | 79 ++++++++++++++++++++++----------------- 1 file changed, 44 insertions(+), 35 deletions(-) (limited to 'Documentation') diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients index 6b07f23..856274f 100644 --- a/Documentation/i2c/porting-clients +++ b/Documentation/i2c/porting-clients @@ -1,10 +1,13 @@ -Revision 5, 2005-07-29 +Revision 6, 2005-11-20 Jean Delvare Greg KH This is a guide on how to convert I2C chip drivers from Linux 2.4 to Linux 2.6. I have been using existing drivers (lm75, lm78) as examples. Then I converted a driver myself (lm83) and updated this document. +Note that this guide is strongly oriented towards hardware monitoring +drivers. Many points are still valid for other type of drivers, but +others may be irrelevant. There are two sets of points below. The first set concerns technical changes. The second set concerns coding policy. Both are mandatory. @@ -22,16 +25,20 @@ Technical changes: #include #include #include + #include #include + #include /* for ISA drivers */ #include /* for hardware monitoring drivers */ #include #include /* if you need VRM support */ + #include /* for class registration */ #include /* if you have I/O operations */ Please respect this inclusion order. Some extra headers may be required for a given driver (e.g. "lm75.h"). * [Addresses] SENSORS_I2C_END becomes I2C_CLIENT_END, ISA addresses - are no more handled by the i2c core. + are no more handled by the i2c core. Address ranges are no more + supported either, define each individual address separately. SENSORS_INSMOD_ becomes I2C_CLIENT_INSMOD_. * [Client data] Get rid of sysctl_id. Try using standard names for @@ -48,23 +55,23 @@ Technical changes: int kind); static void lm75_init_client(struct i2c_client *client); static int lm75_detach_client(struct i2c_client *client); - static void lm75_update_client(struct i2c_client *client); + static struct lm75_data lm75_update_device(struct device *dev); * [Sysctl] All sysctl stuff is of course gone (defines, ctl_table and functions). Instead, you have to define show and set functions for each sysfs file. Only define set for writable values. Take a look at an - existing 2.6 driver for details (lm78 for example). Don't forget + existing 2.6 driver for details (it87 for example). Don't forget to define the attributes for each file (this is that step that links callback functions). Use the file names specified in - Documentation/i2c/sysfs-interface for the individual files. Also + Documentation/hwmon/sysfs-interface for the individual files. Also convert the units these files read and write to the specified ones. If you need to add a new type of file, please discuss it on the sensors mailing list by providing a - patch to the Documentation/i2c/sysfs-interface file. + patch to the Documentation/hwmon/sysfs-interface file. * [Attach] For I2C drivers, the attach function should make sure - that the adapter's class has I2C_CLASS_HWMON, using the - following construct: + that the adapter's class has I2C_CLASS_HWMON (or whatever class is + suitable for your driver), using the following construct: if (!(adapter->class & I2C_CLASS_HWMON)) return 0; ISA-only drivers of course don't need this. @@ -72,23 +79,23 @@ Technical changes: * [Detect] As mentioned earlier, the flags parameter is gone. The type_name and client_name strings are replaced by a single - name string, which will be filled with a lowercase, short string - (typically the driver name, e.g. "lm75"). + name string, which will be filled with a lowercase, short string. In i2c-only drivers, drop the i2c_is_isa_adapter check, it's useless. Same for isa-only drivers, as the test would always be true. Only hybrid drivers (which are quite rare) still need it. - The errorN labels are reduced to the number needed. If that number - is 2 (i2c-only drivers), it is advised that the labels are named - exit and exit_free. For i2c+isa drivers, labels should be named - ERROR0, ERROR1 and ERROR2. Don't forget to properly set err before + The labels used for error paths are reduced to the number needed. + It is advised that the labels are given descriptive names such as + exit and exit_free. Don't forget to properly set err before jumping to error labels. By the way, labels should be left-aligned. Use kzalloc instead of kmalloc. Use i2c_set_clientdata to set the client data (as opposed to a direct access to client->data). - Use strlcpy instead of strcpy to copy the client name. + Use strlcpy instead of strcpy or snprintf to copy the client name. Replace the sysctl directory registration by calls to device_create_file. Move the driver initialization before any sysfs file creation. + Register the client with the hwmon class (using hwmon_device_register) + if applicable. Drop client->id. Drop any 24RF08 corruption prevention you find, as this is now done at the i2c-core level, and doing it twice voids it. @@ -96,19 +103,25 @@ Technical changes: * [Init] Limits must not be set by the driver (can be done later in user-space). Chip should not be reset default (although a module - parameter may be used to force is), and initialization should be + parameter may be used to force it), and initialization should be limited to the strictly necessary steps. -* [Detach] Get rid of data, remove the call to - i2c_deregister_entry. Do not log an error message if - i2c_detach_client fails, as i2c-core will now do it for you. +* [Detach] Remove the call to i2c_deregister_entry. Do not log an + error message if i2c_detach_client fails, as i2c-core will now do + it for you. + Unregister from the hwmon class if applicable. -* [Update] Don't access client->data directly, use - i2c_get_clientdata(client) instead. +* [Update] The function prototype changed, it is now + passed a device structure, which you have to convert to a client + using to_i2c_client(dev). The update function should return a + pointer to the client data. + Don't access client->data directly, use i2c_get_clientdata(client) + instead. + Use time_after() instead of direct jiffies comparison. -* [Interface] Init function should not print anything. Make sure - there is a MODULE_LICENSE() line, at the bottom of the file - (after MODULE_AUTHOR() and MODULE_DESCRIPTION(), in this order). +* [Interface] Make sure there is a MODULE_LICENSE() line, at the bottom + of the file (after MODULE_AUTHOR() and MODULE_DESCRIPTION(), in this + order). * [Driver] The flags field of the i2c_driver structure is gone. I2C_DF_NOTIFY is now the default behavior. @@ -118,21 +131,17 @@ Coding policy: * [Copyright] Use (C), not (c), for copyright. * [Debug/log] Get rid of #ifdef DEBUG/#endif constructs whenever you - can. Calls to printk/pr_debug for debugging purposes are replaced - by calls to dev_dbg. Here is an example on how to call it (taken - from lm75_detect): + can. Calls to printk for debugging purposes are replaced by calls to + dev_dbg where possible, else to pr_debug. Here is an example of how + to call it (taken from lm75_detect): dev_dbg(&client->dev, "Starting lm75 update\n"); Replace other printk calls with the dev_info, dev_err or dev_warn function, as appropriate. -* [Constants] Constants defines (registers, conversions, initial - values) should be aligned. This greatly improves readability. - Same goes for variables declarations. Alignments are achieved by the - means of tabs, not spaces. Remember that tabs are set to 8 in the - Linux kernel code. - -* [Structure definition] The name field should be standardized. All - lowercase and as simple as the driver name itself (e.g. "lm75"). +* [Constants] Constants defines (registers, conversions) should be + aligned. This greatly improves readability. + Alignments are achieved by the means of tabs, not spaces. Remember + that tabs are set to 8 in the Linux kernel code. * [Layout] Avoid extra empty lines between comments and what they comment. Respect the coding style (see Documentation/CodingStyle), -- cgit v1.1 From d45d204f0c3daa01a393dfe81415573f9459506a Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sat, 26 Nov 2005 20:55:35 +0100 Subject: [PATCH] i2c: Drop i2c_driver.{owner,name}, 11 of 11 Document the drop of the owner and name fields of the i2c_driver structure. Signed-off-by: Jean Delvare CC: Laurent Riffard Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/porting-clients | 4 ++++ Documentation/i2c/writing-clients | 6 ++++-- 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients index 856274f..f997c72 100644 --- a/Documentation/i2c/porting-clients +++ b/Documentation/i2c/porting-clients @@ -125,6 +125,10 @@ Technical changes: * [Driver] The flags field of the i2c_driver structure is gone. I2C_DF_NOTIFY is now the default behavior. + The i2c_driver structure has a driver member, which is itself a + structure, those owner and name members should be initialized to + THIS_MODULE and a driver name string, respectively. i2c_driver + itself has no name member anymore. Coding policy: diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients index 59d2c16..95eed2b 100644 --- a/Documentation/i2c/writing-clients +++ b/Documentation/i2c/writing-clients @@ -25,8 +25,10 @@ routines, a client structure specific information like the actual I2C address. static struct i2c_driver foo_driver = { - .owner = THIS_MODULE, - .name = "Foo version 2.3 driver", + .driver = { + .owner = THIS_MODULE, + .name = "foo", + }, .attach_adapter = &foo_attach_adapter, .detach_client = &foo_detach_client, .command = &foo_command /* may be NULL */ -- cgit v1.1 From d82c0bf88fa97c1993ea9d6051488e7cb012b440 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Wed, 7 Dec 2005 21:54:26 +0100 Subject: [PATCH] i2c: Documentation update Update the i2c documentation to reflect the recent change to i2c_add_driver. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/porting-clients | 5 ++--- Documentation/i2c/writing-clients | 1 - 2 files changed, 2 insertions(+), 4 deletions(-) (limited to 'Documentation') diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients index f997c72..f03c2a0 100644 --- a/Documentation/i2c/porting-clients +++ b/Documentation/i2c/porting-clients @@ -126,9 +126,8 @@ Technical changes: * [Driver] The flags field of the i2c_driver structure is gone. I2C_DF_NOTIFY is now the default behavior. The i2c_driver structure has a driver member, which is itself a - structure, those owner and name members should be initialized to - THIS_MODULE and a driver name string, respectively. i2c_driver - itself has no name member anymore. + structure, those name member should be initialized to a driver name + string. i2c_driver itself has no name member anymore. Coding policy: diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients index 95eed2b..27c425a 100644 --- a/Documentation/i2c/writing-clients +++ b/Documentation/i2c/writing-clients @@ -26,7 +26,6 @@ address. static struct i2c_driver foo_driver = { .driver = { - .owner = THIS_MODULE, .name = "foo", }, .attach_adapter = &foo_attach_adapter, -- cgit v1.1 From fb687d73fa7685ffeed1a6b24fadb5f4db817783 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 18 Dec 2005 16:51:55 +0100 Subject: [PATCH] i2c: update i2c_driver.command documentation Document i2c_driver.command as being deprecated, and don't suggest an empty implementation of this callback as it doesn't make any sense. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/writing-clients | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) (limited to 'Documentation') diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients index 27c425a..3a057c8 100644 --- a/Documentation/i2c/writing-clients +++ b/Documentation/i2c/writing-clients @@ -492,17 +492,13 @@ Note that some functions are marked by `__init', and some data structures by `__init_data'. Hose functions and structures can be removed after kernel booting (or module loading) is completed. + Command function ================ A generic ioctl-like function call back is supported. You will seldom -need this. You may even set it to NULL. - - /* No commands defined */ - int foo_command(struct i2c_client *client, unsigned int cmd, void *arg) - { - return 0; - } +need this, and its use is deprecated anyway, so newer design should not +use it. Set it to NULL. Sending and receiving -- cgit v1.1 From 7c72ccf09b6debe55b8e049377ad3183ed4f4cb3 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 18 Dec 2005 17:25:18 +0100 Subject: [PATCH] i2c: i2c-nforce2 add nforce4 MCP-04 device ID One more supported PCI ID for the i2c-nforce2 driver. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/busses/i2c-nforce2 | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/i2c/busses/i2c-nforce2 b/Documentation/i2c/busses/i2c-nforce2 index e379e18..d751282 100644 --- a/Documentation/i2c/busses/i2c-nforce2 +++ b/Documentation/i2c/busses/i2c-nforce2 @@ -5,7 +5,8 @@ Supported adapters: * nForce2 Ultra 400 MCP 10de:0084 * nForce3 Pro150 MCP 10de:00D4 * nForce3 250Gb MCP 10de:00E4 - * nForce4 MCP 10de:0052 + * nForce4 MCP 10de:0052 + * nForce4 MCP-04 10de:0034 Datasheet: not publically available, but seems to be similar to the AMD-8111 SMBus 2.0 adapter. -- cgit v1.1