diff options
-rw-r--r-- | Documentation/feature-removal-schedule.txt | 8 | ||||
-rw-r--r-- | Documentation/i2c/busses/i2c-i801 | 7 | ||||
-rw-r--r-- | Documentation/i2c/porting-clients | 160 | ||||
-rw-r--r-- | Documentation/i2c/writing-clients | 491 | ||||
-rw-r--r-- | drivers/i2c/algos/i2c-algo-pcf.c | 21 | ||||
-rw-r--r-- | drivers/i2c/busses/Kconfig | 1 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-elektor.c | 3 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-hydra.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 3 | ||||
-rw-r--r-- | drivers/i2c/chips/Kconfig | 2 | ||||
-rw-r--r-- | drivers/i2c/chips/Makefile | 3 | ||||
-rw-r--r-- | drivers/i2c/i2c-core.c | 3 | ||||
-rw-r--r-- | include/linux/device.h | 2 | ||||
-rw-r--r-- | include/linux/i2c-algo-pcf.h | 5 | ||||
-rw-r--r-- | include/linux/i2c.h | 163 |
15 files changed, 243 insertions, 631 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index f5f812daf9f4..05d71b4b9430 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt | |||
@@ -359,3 +359,11 @@ Why: The 2.6 kernel supports direct writing to ide CD drives, which | |||
359 | eliminates the need for ide-scsi. The new method is more | 359 | eliminates the need for ide-scsi. The new method is more |
360 | efficient in every way. | 360 | efficient in every way. |
361 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 361 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> |
362 | |||
363 | --------------------------- | ||
364 | |||
365 | What: i2c_attach_client(), i2c_detach_client(), i2c_driver->detach_client() | ||
366 | When: 2.6.29 (ideally) or 2.6.30 (more likely) | ||
367 | Why: Deprecated by the new (standard) device driver binding model. Use | ||
368 | i2c_driver->probe() and ->remove() instead. | ||
369 | Who: Jean Delvare <khali@linux-fr.org> | ||
diff --git a/Documentation/i2c/busses/i2c-i801 b/Documentation/i2c/busses/i2c-i801 index c31e0291e167..81c0c59a60ea 100644 --- a/Documentation/i2c/busses/i2c-i801 +++ b/Documentation/i2c/busses/i2c-i801 | |||
@@ -13,8 +13,9 @@ Supported adapters: | |||
13 | * Intel 631xESB/632xESB (ESB2) | 13 | * Intel 631xESB/632xESB (ESB2) |
14 | * Intel 82801H (ICH8) | 14 | * Intel 82801H (ICH8) |
15 | * Intel 82801I (ICH9) | 15 | * Intel 82801I (ICH9) |
16 | * Intel Tolapai | 16 | * Intel EP80579 (Tolapai) |
17 | * Intel ICH10 | 17 | * Intel 82801JI (ICH10) |
18 | * Intel PCH | ||
18 | Datasheets: Publicly available at the Intel website | 19 | Datasheets: Publicly available at the Intel website |
19 | 20 | ||
20 | Authors: | 21 | Authors: |
@@ -32,7 +33,7 @@ Description | |||
32 | ----------- | 33 | ----------- |
33 | 34 | ||
34 | The ICH (properly known as the 82801AA), ICH0 (82801AB), ICH2 (82801BA), | 35 | The ICH (properly known as the 82801AA), ICH0 (82801AB), ICH2 (82801BA), |
35 | ICH3 (82801CA/CAM) and later devices are Intel chips that are a part of | 36 | ICH3 (82801CA/CAM) and later devices (PCH) are Intel chips that are a part of |
36 | Intel's '810' chipset for Celeron-based PCs, '810E' chipset for | 37 | Intel's '810' chipset for Celeron-based PCs, '810E' chipset for |
37 | Pentium-based PCs, '815E' chipset, and others. | 38 | Pentium-based PCs, '815E' chipset, and others. |
38 | 39 | ||
diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients deleted file mode 100644 index 7bf82c08f6ca..000000000000 --- a/Documentation/i2c/porting-clients +++ /dev/null | |||
@@ -1,160 +0,0 @@ | |||
1 | Revision 7, 2007-04-19 | ||
2 | Jean Delvare <khali@linux-fr.org> | ||
3 | Greg KH <greg@kroah.com> | ||
4 | |||
5 | This is a guide on how to convert I2C chip drivers from Linux 2.4 to | ||
6 | Linux 2.6. I have been using existing drivers (lm75, lm78) as examples. | ||
7 | Then I converted a driver myself (lm83) and updated this document. | ||
8 | Note that this guide is strongly oriented towards hardware monitoring | ||
9 | drivers. Many points are still valid for other type of drivers, but | ||
10 | others may be irrelevant. | ||
11 | |||
12 | There are two sets of points below. The first set concerns technical | ||
13 | changes. The second set concerns coding policy. Both are mandatory. | ||
14 | |||
15 | Although reading this guide will help you porting drivers, I suggest | ||
16 | you keep an eye on an already ported driver while porting your own | ||
17 | driver. This will help you a lot understanding what this guide | ||
18 | exactly means. Choose the chip driver that is the more similar to | ||
19 | yours for best results. | ||
20 | |||
21 | Technical changes: | ||
22 | |||
23 | * [Driver type] Any driver that was relying on i2c-isa has to be | ||
24 | converted to a proper isa, platform or pci driver. This is not | ||
25 | covered by this guide. | ||
26 | |||
27 | * [Includes] Get rid of "version.h" and <linux/i2c-proc.h>. | ||
28 | Includes typically look like that: | ||
29 | #include <linux/module.h> | ||
30 | #include <linux/init.h> | ||
31 | #include <linux/slab.h> | ||
32 | #include <linux/jiffies.h> | ||
33 | #include <linux/i2c.h> | ||
34 | #include <linux/hwmon.h> /* for hardware monitoring drivers */ | ||
35 | #include <linux/hwmon-sysfs.h> | ||
36 | #include <linux/hwmon-vid.h> /* if you need VRM support */ | ||
37 | #include <linux/err.h> /* for class registration */ | ||
38 | Please respect this inclusion order. Some extra headers may be | ||
39 | required for a given driver (e.g. "lm75.h"). | ||
40 | |||
41 | * [Addresses] SENSORS_I2C_END becomes I2C_CLIENT_END, ISA addresses | ||
42 | are no more handled by the i2c core. Address ranges are no more | ||
43 | supported either, define each individual address separately. | ||
44 | SENSORS_INSMOD_<n> becomes I2C_CLIENT_INSMOD_<n>. | ||
45 | |||
46 | * [Client data] Get rid of sysctl_id. Try using standard names for | ||
47 | register values (for example, temp_os becomes temp_max). You're | ||
48 | still relatively free here, but you *have* to follow the standard | ||
49 | names for sysfs files (see the Sysctl section below). | ||
50 | |||
51 | * [Function prototypes] The detect functions loses its flags | ||
52 | parameter. Sysctl (e.g. lm75_temp) and miscellaneous functions | ||
53 | are off the list of prototypes. This usually leaves five | ||
54 | prototypes: | ||
55 | static int lm75_attach_adapter(struct i2c_adapter *adapter); | ||
56 | static int lm75_detect(struct i2c_adapter *adapter, int address, | ||
57 | int kind); | ||
58 | static void lm75_init_client(struct i2c_client *client); | ||
59 | static int lm75_detach_client(struct i2c_client *client); | ||
60 | static struct lm75_data lm75_update_device(struct device *dev); | ||
61 | |||
62 | * [Sysctl] All sysctl stuff is of course gone (defines, ctl_table | ||
63 | and functions). Instead, you have to define show and set functions for | ||
64 | each sysfs file. Only define set for writable values. Take a look at an | ||
65 | existing 2.6 driver for details (it87 for example). Don't forget | ||
66 | to define the attributes for each file (this is that step that | ||
67 | links callback functions). Use the file names specified in | ||
68 | Documentation/hwmon/sysfs-interface for the individual files. Also | ||
69 | convert the units these files read and write to the specified ones. | ||
70 | If you need to add a new type of file, please discuss it on the | ||
71 | sensors mailing list <lm-sensors@lm-sensors.org> by providing a | ||
72 | patch to the Documentation/hwmon/sysfs-interface file. | ||
73 | |||
74 | * [Attach] The attach function should make sure that the adapter's | ||
75 | class has I2C_CLASS_HWMON (or whatever class is suitable for your | ||
76 | driver), using the following construct: | ||
77 | if (!(adapter->class & I2C_CLASS_HWMON)) | ||
78 | return 0; | ||
79 | Call i2c_probe() instead of i2c_detect(). | ||
80 | |||
81 | * [Detect] As mentioned earlier, the flags parameter is gone. | ||
82 | The type_name and client_name strings are replaced by a single | ||
83 | name string, which will be filled with a lowercase, short string. | ||
84 | The labels used for error paths are reduced to the number needed. | ||
85 | It is advised that the labels are given descriptive names such as | ||
86 | exit and exit_free. Don't forget to properly set err before | ||
87 | jumping to error labels. By the way, labels should be left-aligned. | ||
88 | Use kzalloc instead of kmalloc. | ||
89 | Use i2c_set_clientdata to set the client data (as opposed to | ||
90 | a direct access to client->data). | ||
91 | Use strlcpy instead of strcpy or snprintf to copy the client name. | ||
92 | Replace the sysctl directory registration by calls to | ||
93 | device_create_file. Move the driver initialization before any | ||
94 | sysfs file creation. | ||
95 | Register the client with the hwmon class (using hwmon_device_register) | ||
96 | if applicable. | ||
97 | Drop client->id. | ||
98 | Drop any 24RF08 corruption prevention you find, as this is now done | ||
99 | at the i2c-core level, and doing it twice voids it. | ||
100 | Don't add I2C_CLIENT_ALLOW_USE to client->flags, it's the default now. | ||
101 | |||
102 | * [Init] Limits must not be set by the driver (can be done later in | ||
103 | user-space). Chip should not be reset default (although a module | ||
104 | parameter may be used to force it), and initialization should be | ||
105 | limited to the strictly necessary steps. | ||
106 | |||
107 | * [Detach] Remove the call to i2c_deregister_entry. Do not log an | ||
108 | error message if i2c_detach_client fails, as i2c-core will now do | ||
109 | it for you. | ||
110 | Unregister from the hwmon class if applicable. | ||
111 | |||
112 | * [Update] The function prototype changed, it is now | ||
113 | passed a device structure, which you have to convert to a client | ||
114 | using to_i2c_client(dev). The update function should return a | ||
115 | pointer to the client data. | ||
116 | Don't access client->data directly, use i2c_get_clientdata(client) | ||
117 | instead. | ||
118 | Use time_after() instead of direct jiffies comparison. | ||
119 | |||
120 | * [Interface] Make sure there is a MODULE_LICENSE() line, at the bottom | ||
121 | of the file (after MODULE_AUTHOR() and MODULE_DESCRIPTION(), in this | ||
122 | order). | ||
123 | |||
124 | * [Driver] The flags field of the i2c_driver structure is gone. | ||
125 | I2C_DF_NOTIFY is now the default behavior. | ||
126 | The i2c_driver structure has a driver member, which is itself a | ||
127 | structure, those name member should be initialized to a driver name | ||
128 | string. i2c_driver itself has no name member anymore. | ||
129 | |||
130 | * [Driver model] Instead of shutdown or reboot notifiers, provide a | ||
131 | shutdown() method in your driver. | ||
132 | |||
133 | * [Power management] Use the driver model suspend() and resume() | ||
134 | callbacks instead of the obsolete pm_register() calls. | ||
135 | |||
136 | Coding policy: | ||
137 | |||
138 | * [Copyright] Use (C), not (c), for copyright. | ||
139 | |||
140 | * [Debug/log] Get rid of #ifdef DEBUG/#endif constructs whenever you | ||
141 | can. Calls to printk for debugging purposes are replaced by calls to | ||
142 | dev_dbg where possible, else to pr_debug. Here is an example of how | ||
143 | to call it (taken from lm75_detect): | ||
144 | dev_dbg(&client->dev, "Starting lm75 update\n"); | ||
145 | Replace other printk calls with the dev_info, dev_err or dev_warn | ||
146 | function, as appropriate. | ||
147 | |||
148 | * [Constants] Constants defines (registers, conversions) should be | ||
149 | aligned. This greatly improves readability. | ||
150 | Alignments are achieved by the means of tabs, not spaces. Remember | ||
151 | that tabs are set to 8 in the Linux kernel code. | ||
152 | |||
153 | * [Layout] Avoid extra empty lines between comments and what they | ||
154 | comment. Respect the coding style (see Documentation/CodingStyle), | ||
155 | in particular when it comes to placing curly braces. | ||
156 | |||
157 | * [Comments] Make sure that no comment refers to a file that isn't | ||
158 | part of the Linux source tree (typically doc/chips/<chip name>), | ||
159 | and that remaining comments still match the code. Merging comment | ||
160 | lines when possible is encouraged. | ||
diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients index d73ee117a8ca..6b9af7d479c2 100644 --- a/Documentation/i2c/writing-clients +++ b/Documentation/i2c/writing-clients | |||
@@ -10,23 +10,21 @@ General remarks | |||
10 | =============== | 10 | =============== |
11 | 11 | ||
12 | Try to keep the kernel namespace as clean as possible. The best way to | 12 | Try to keep the kernel namespace as clean as possible. The best way to |
13 | do this is to use a unique prefix for all global symbols. This is | 13 | do this is to use a unique prefix for all global symbols. This is |
14 | especially important for exported symbols, but it is a good idea to do | 14 | especially important for exported symbols, but it is a good idea to do |
15 | it for non-exported symbols too. We will use the prefix `foo_' in this | 15 | it for non-exported symbols too. We will use the prefix `foo_' in this |
16 | tutorial, and `FOO_' for preprocessor variables. | 16 | tutorial. |
17 | 17 | ||
18 | 18 | ||
19 | The driver structure | 19 | The driver structure |
20 | ==================== | 20 | ==================== |
21 | 21 | ||
22 | Usually, you will implement a single driver structure, and instantiate | 22 | Usually, you will implement a single driver structure, and instantiate |
23 | all clients from it. Remember, a driver structure contains general access | 23 | all clients from it. Remember, a driver structure contains general access |
24 | routines, and should be zero-initialized except for fields with data you | 24 | routines, and should be zero-initialized except for fields with data you |
25 | provide. A client structure holds device-specific information like the | 25 | provide. A client structure holds device-specific information like the |
26 | driver model device node, and its I2C address. | 26 | driver model device node, and its I2C address. |
27 | 27 | ||
28 | /* iff driver uses driver model ("new style") binding model: */ | ||
29 | |||
30 | static struct i2c_device_id foo_idtable[] = { | 28 | static struct i2c_device_id foo_idtable[] = { |
31 | { "foo", my_id_for_foo }, | 29 | { "foo", my_id_for_foo }, |
32 | { "bar", my_id_for_bar }, | 30 | { "bar", my_id_for_bar }, |
@@ -40,7 +38,6 @@ static struct i2c_driver foo_driver = { | |||
40 | .name = "foo", | 38 | .name = "foo", |
41 | }, | 39 | }, |
42 | 40 | ||
43 | /* iff driver uses driver model ("new style") binding model: */ | ||
44 | .id_table = foo_ids, | 41 | .id_table = foo_ids, |
45 | .probe = foo_probe, | 42 | .probe = foo_probe, |
46 | .remove = foo_remove, | 43 | .remove = foo_remove, |
@@ -49,24 +46,19 @@ static struct i2c_driver foo_driver = { | |||
49 | .detect = foo_detect, | 46 | .detect = foo_detect, |
50 | .address_data = &addr_data, | 47 | .address_data = &addr_data, |
51 | 48 | ||
52 | /* else, driver uses "legacy" binding model: */ | ||
53 | .attach_adapter = foo_attach_adapter, | ||
54 | .detach_client = foo_detach_client, | ||
55 | |||
56 | /* these may be used regardless of the driver binding model */ | ||
57 | .shutdown = foo_shutdown, /* optional */ | 49 | .shutdown = foo_shutdown, /* optional */ |
58 | .suspend = foo_suspend, /* optional */ | 50 | .suspend = foo_suspend, /* optional */ |
59 | .resume = foo_resume, /* optional */ | 51 | .resume = foo_resume, /* optional */ |
60 | .command = foo_command, /* optional */ | 52 | .command = foo_command, /* optional, deprecated */ |
61 | } | 53 | } |
62 | 54 | ||
63 | The name field is the driver name, and must not contain spaces. It | 55 | The name field is the driver name, and must not contain spaces. It |
64 | should match the module name (if the driver can be compiled as a module), | 56 | should match the module name (if the driver can be compiled as a module), |
65 | although you can use MODULE_ALIAS (passing "foo" in this example) to add | 57 | although you can use MODULE_ALIAS (passing "foo" in this example) to add |
66 | another name for the module. If the driver name doesn't match the module | 58 | another name for the module. If the driver name doesn't match the module |
67 | name, the module won't be automatically loaded (hotplug/coldplug). | 59 | name, the module won't be automatically loaded (hotplug/coldplug). |
68 | 60 | ||
69 | All other fields are for call-back functions which will be explained | 61 | All other fields are for call-back functions which will be explained |
70 | below. | 62 | below. |
71 | 63 | ||
72 | 64 | ||
@@ -74,34 +66,13 @@ Extra client data | |||
74 | ================= | 66 | ================= |
75 | 67 | ||
76 | Each client structure has a special `data' field that can point to any | 68 | Each client structure has a special `data' field that can point to any |
77 | structure at all. You should use this to keep device-specific data, | 69 | structure at all. You should use this to keep device-specific data. |
78 | especially in drivers that handle multiple I2C or SMBUS devices. You | ||
79 | do not always need this, but especially for `sensors' drivers, it can | ||
80 | be very useful. | ||
81 | 70 | ||
82 | /* store the value */ | 71 | /* store the value */ |
83 | void i2c_set_clientdata(struct i2c_client *client, void *data); | 72 | void i2c_set_clientdata(struct i2c_client *client, void *data); |
84 | 73 | ||
85 | /* retrieve the value */ | 74 | /* retrieve the value */ |
86 | void *i2c_get_clientdata(struct i2c_client *client); | 75 | void *i2c_get_clientdata(const struct i2c_client *client); |
87 | |||
88 | An example structure is below. | ||
89 | |||
90 | struct foo_data { | ||
91 | struct i2c_client client; | ||
92 | enum chips type; /* To keep the chips type for `sensors' drivers. */ | ||
93 | |||
94 | /* Because the i2c bus is slow, it is often useful to cache the read | ||
95 | information of a chip for some time (for example, 1 or 2 seconds). | ||
96 | It depends of course on the device whether this is really worthwhile | ||
97 | or even sensible. */ | ||
98 | struct mutex update_lock; /* When we are reading lots of information, | ||
99 | another process should not update the | ||
100 | below information */ | ||
101 | char valid; /* != 0 if the following fields are valid. */ | ||
102 | unsigned long last_updated; /* In jiffies */ | ||
103 | /* Add the read information here too */ | ||
104 | }; | ||
105 | 76 | ||
106 | 77 | ||
107 | Accessing the client | 78 | Accessing the client |
@@ -109,11 +80,9 @@ Accessing the client | |||
109 | 80 | ||
110 | Let's say we have a valid client structure. At some time, we will need | 81 | Let's say we have a valid client structure. At some time, we will need |
111 | to gather information from the client, or write new information to the | 82 | to gather information from the client, or write new information to the |
112 | client. How we will export this information to user-space is less | 83 | client. |
113 | important at this moment (perhaps we do not need to do this at all for | ||
114 | some obscure clients). But we need generic reading and writing routines. | ||
115 | 84 | ||
116 | I have found it useful to define foo_read and foo_write function for this. | 85 | I have found it useful to define foo_read and foo_write functions for this. |
117 | For some cases, it will be easier to call the i2c functions directly, | 86 | For some cases, it will be easier to call the i2c functions directly, |
118 | but many chips have some kind of register-value idea that can easily | 87 | but many chips have some kind of register-value idea that can easily |
119 | be encapsulated. | 88 | be encapsulated. |
@@ -121,33 +90,33 @@ be encapsulated. | |||
121 | The below functions are simple examples, and should not be copied | 90 | The below functions are simple examples, and should not be copied |
122 | literally. | 91 | literally. |
123 | 92 | ||
124 | int foo_read_value(struct i2c_client *client, u8 reg) | 93 | int foo_read_value(struct i2c_client *client, u8 reg) |
125 | { | 94 | { |
126 | if (reg < 0x10) /* byte-sized register */ | 95 | if (reg < 0x10) /* byte-sized register */ |
127 | return i2c_smbus_read_byte_data(client,reg); | 96 | return i2c_smbus_read_byte_data(client, reg); |
128 | else /* word-sized register */ | 97 | else /* word-sized register */ |
129 | return i2c_smbus_read_word_data(client,reg); | 98 | return i2c_smbus_read_word_data(client, reg); |
130 | } | 99 | } |
131 | 100 | ||
132 | int foo_write_value(struct i2c_client *client, u8 reg, u16 value) | 101 | int foo_write_value(struct i2c_client *client, u8 reg, u16 value) |
133 | { | 102 | { |
134 | if (reg == 0x10) /* Impossible to write - driver error! */ { | 103 | if (reg == 0x10) /* Impossible to write - driver error! */ |
135 | return -1; | 104 | return -EINVAL; |
136 | else if (reg < 0x10) /* byte-sized register */ | 105 | else if (reg < 0x10) /* byte-sized register */ |
137 | return i2c_smbus_write_byte_data(client,reg,value); | 106 | return i2c_smbus_write_byte_data(client, reg, value); |
138 | else /* word-sized register */ | 107 | else /* word-sized register */ |
139 | return i2c_smbus_write_word_data(client,reg,value); | 108 | return i2c_smbus_write_word_data(client, reg, value); |
140 | } | 109 | } |
141 | 110 | ||
142 | 111 | ||
143 | Probing and attaching | 112 | Probing and attaching |
144 | ===================== | 113 | ===================== |
145 | 114 | ||
146 | The Linux I2C stack was originally written to support access to hardware | 115 | The Linux I2C stack was originally written to support access to hardware |
147 | monitoring chips on PC motherboards, and thus it embeds some assumptions | 116 | monitoring chips on PC motherboards, and thus used to embed some assumptions |
148 | that are more appropriate to SMBus (and PCs) than to I2C. One of these | 117 | that were more appropriate to SMBus (and PCs) than to I2C. One of these |
149 | assumptions is that most adapters and devices drivers support the SMBUS_QUICK | 118 | assumptions was that most adapters and devices drivers support the SMBUS_QUICK |
150 | protocol to probe device presence. Another is that devices and their drivers | 119 | protocol to probe device presence. Another was that devices and their drivers |
151 | can be sufficiently configured using only such probe primitives. | 120 | can be sufficiently configured using only such probe primitives. |
152 | 121 | ||
153 | As Linux and its I2C stack became more widely used in embedded systems | 122 | As Linux and its I2C stack became more widely used in embedded systems |
@@ -164,6 +133,9 @@ since the "legacy" model requires drivers to create "i2c_client" device | |||
164 | objects after SMBus style probing, while the Linux driver model expects | 133 | objects after SMBus style probing, while the Linux driver model expects |
165 | drivers to be given such device objects in their probe() routines. | 134 | drivers to be given such device objects in their probe() routines. |
166 | 135 | ||
136 | The legacy model is deprecated now and will soon be removed, so we no | ||
137 | longer document it here. | ||
138 | |||
167 | 139 | ||
168 | Standard Driver Model Binding ("New Style") | 140 | Standard Driver Model Binding ("New Style") |
169 | ------------------------------------------- | 141 | ------------------------------------------- |
@@ -193,8 +165,8 @@ matches the device's name. It is passed the entry that was matched so | |||
193 | the driver knows which one in the table matched. | 165 | the driver knows which one in the table matched. |
194 | 166 | ||
195 | 167 | ||
196 | Device Creation (Standard driver model) | 168 | Device Creation |
197 | --------------------------------------- | 169 | --------------- |
198 | 170 | ||
199 | If you know for a fact that an I2C device is connected to a given I2C bus, | 171 | If you know for a fact that an I2C device is connected to a given I2C bus, |
200 | you can instantiate that device by simply filling an i2c_board_info | 172 | you can instantiate that device by simply filling an i2c_board_info |
@@ -221,8 +193,8 @@ in the I2C bus driver. You may want to save the returned i2c_client | |||
221 | reference for later use. | 193 | reference for later use. |
222 | 194 | ||
223 | 195 | ||
224 | Device Detection (Standard driver model) | 196 | Device Detection |
225 | ---------------------------------------- | 197 | ---------------- |
226 | 198 | ||
227 | Sometimes you do not know in advance which I2C devices are connected to | 199 | Sometimes you do not know in advance which I2C devices are connected to |
228 | a given I2C bus. This is for example the case of hardware monitoring | 200 | a given I2C bus. This is for example the case of hardware monitoring |
@@ -246,8 +218,8 @@ otherwise misdetections are likely to occur and things can get wrong | |||
246 | quickly. | 218 | quickly. |
247 | 219 | ||
248 | 220 | ||
249 | Device Deletion (Standard driver model) | 221 | Device Deletion |
250 | --------------------------------------- | 222 | --------------- |
251 | 223 | ||
252 | Each I2C device which has been created using i2c_new_device() or | 224 | Each I2C device which has been created using i2c_new_device() or |
253 | i2c_new_probed_device() can be unregistered by calling | 225 | i2c_new_probed_device() can be unregistered by calling |
@@ -256,264 +228,37 @@ called automatically before the underlying I2C bus itself is removed, as a | |||
256 | device can't survive its parent in the device driver model. | 228 | device can't survive its parent in the device driver model. |
257 | 229 | ||
258 | 230 | ||
259 | Legacy Driver Binding Model | 231 | Initializing the driver |
260 | --------------------------- | 232 | ======================= |
233 | |||
234 | When the kernel is booted, or when your foo driver module is inserted, | ||
235 | you have to do some initializing. Fortunately, just registering the | ||
236 | driver module is usually enough. | ||
261 | 237 | ||
262 | Most i2c devices can be present on several i2c addresses; for some this | 238 | static int __init foo_init(void) |
263 | is determined in hardware (by soldering some chip pins to Vcc or Ground), | 239 | { |
264 | for others this can be changed in software (by writing to specific client | 240 | return i2c_add_driver(&foo_driver); |
265 | registers). Some devices are usually on a specific address, but not always; | 241 | } |
266 | and some are even more tricky. So you will probably need to scan several | 242 | |
267 | i2c addresses for your clients, and do some sort of detection to see | 243 | static void __exit foo_cleanup(void) |
268 | whether it is actually a device supported by your driver. | 244 | { |
245 | i2c_del_driver(&foo_driver); | ||
246 | } | ||
247 | |||
248 | /* Substitute your own name and email address */ | ||
249 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>" | ||
250 | MODULE_DESCRIPTION("Driver for Barf Inc. Foo I2C devices"); | ||
269 | 251 | ||
270 | To give the user a maximum of possibilities, some default module parameters | 252 | /* a few non-GPL license types are also allowed */ |
271 | are defined to help determine what addresses are scanned. Several macros | 253 | MODULE_LICENSE("GPL"); |
272 | are defined in i2c.h to help you support them, as well as a generic | 254 | |
273 | detection algorithm. | 255 | module_init(foo_init); |
274 | 256 | module_exit(foo_cleanup); | |
275 | You do not have to use this parameter interface; but don't try to use | 257 | |
276 | function i2c_probe() if you don't. | 258 | Note that some functions are marked by `__init'. These functions can |
277 | 259 | be removed after kernel booting (or module loading) is completed. | |
278 | 260 | Likewise, functions marked by `__exit' are dropped by the compiler when | |
279 | Probing classes (Legacy model) | 261 | the code is built into the kernel, as they would never be called. |
280 | ------------------------------ | ||
281 | |||
282 | All parameters are given as lists of unsigned 16-bit integers. Lists are | ||
283 | terminated by I2C_CLIENT_END. | ||
284 | The following lists are used internally: | ||
285 | |||
286 | normal_i2c: filled in by the module writer. | ||
287 | A list of I2C addresses which should normally be examined. | ||
288 | probe: insmod parameter. | ||
289 | A list of pairs. The first value is a bus number (-1 for any I2C bus), | ||
290 | the second is the address. These addresses are also probed, as if they | ||
291 | were in the 'normal' list. | ||
292 | ignore: insmod parameter. | ||
293 | A list of pairs. The first value is a bus number (-1 for any I2C bus), | ||
294 | the second is the I2C address. These addresses are never probed. | ||
295 | This parameter overrules the 'normal_i2c' list only. | ||
296 | force: insmod parameter. | ||
297 | A list of pairs. The first value is a bus number (-1 for any I2C bus), | ||
298 | the second is the I2C address. A device is blindly assumed to be on | ||
299 | the given address, no probing is done. | ||
300 | |||
301 | Additionally, kind-specific force lists may optionally be defined if | ||
302 | the driver supports several chip kinds. They are grouped in a | ||
303 | NULL-terminated list of pointers named forces, those first element if the | ||
304 | generic force list mentioned above. Each additional list correspond to an | ||
305 | insmod parameter of the form force_<kind>. | ||
306 | |||
307 | Fortunately, as a module writer, you just have to define the `normal_i2c' | ||
308 | parameter. The complete declaration could look like this: | ||
309 | |||
310 | /* Scan 0x4c to 0x4f */ | ||
311 | static const unsigned short normal_i2c[] = { 0x4c, 0x4d, 0x4e, 0x4f, | ||
312 | I2C_CLIENT_END }; | ||
313 | |||
314 | /* Magic definition of all other variables and things */ | ||
315 | I2C_CLIENT_INSMOD; | ||
316 | /* Or, if your driver supports, say, 2 kind of devices: */ | ||
317 | I2C_CLIENT_INSMOD_2(foo, bar); | ||
318 | |||
319 | If you use the multi-kind form, an enum will be defined for you: | ||
320 | enum chips { any_chip, foo, bar, ... } | ||
321 | You can then (and certainly should) use it in the driver code. | ||
322 | |||
323 | Note that you *have* to call the defined variable `normal_i2c', | ||
324 | without any prefix! | ||
325 | |||
326 | |||
327 | Attaching to an adapter (Legacy model) | ||
328 | -------------------------------------- | ||
329 | |||
330 | Whenever a new adapter is inserted, or for all adapters if the driver is | ||
331 | being registered, the callback attach_adapter() is called. Now is the | ||
332 | time to determine what devices are present on the adapter, and to register | ||
333 | a client for each of them. | ||
334 | |||
335 | The attach_adapter callback is really easy: we just call the generic | ||
336 | detection function. This function will scan the bus for us, using the | ||
337 | information as defined in the lists explained above. If a device is | ||
338 | detected at a specific address, another callback is called. | ||
339 | |||
340 | int foo_attach_adapter(struct i2c_adapter *adapter) | ||
341 | { | ||
342 | return i2c_probe(adapter,&addr_data,&foo_detect_client); | ||
343 | } | ||
344 | |||
345 | Remember, structure `addr_data' is defined by the macros explained above, | ||
346 | so you do not have to define it yourself. | ||
347 | |||
348 | The i2c_probe function will call the foo_detect_client | ||
349 | function only for those i2c addresses that actually have a device on | ||
350 | them (unless a `force' parameter was used). In addition, addresses that | ||
351 | are already in use (by some other registered client) are skipped. | ||
352 | |||
353 | |||
354 | The detect client function (Legacy model) | ||
355 | ----------------------------------------- | ||
356 | |||
357 | The detect client function is called by i2c_probe. The `kind' parameter | ||
358 | contains -1 for a probed detection, 0 for a forced detection, or a positive | ||
359 | number for a forced detection with a chip type forced. | ||
360 | |||
361 | Returning an error different from -ENODEV in a detect function will cause | ||
362 | the detection to stop: other addresses and adapters won't be scanned. | ||
363 | This should only be done on fatal or internal errors, such as a memory | ||
364 | shortage or i2c_attach_client failing. | ||
365 | |||
366 | For now, you can ignore the `flags' parameter. It is there for future use. | ||
367 | |||
368 | int foo_detect_client(struct i2c_adapter *adapter, int address, | ||
369 | int kind) | ||
370 | { | ||
371 | int err = 0; | ||
372 | int i; | ||
373 | struct i2c_client *client; | ||
374 | struct foo_data *data; | ||
375 | const char *name = ""; | ||
376 | |||
377 | /* Let's see whether this adapter can support what we need. | ||
378 | Please substitute the things you need here! */ | ||
379 | if (!i2c_check_functionality(adapter,I2C_FUNC_SMBUS_WORD_DATA | | ||
380 | I2C_FUNC_SMBUS_WRITE_BYTE)) | ||
381 | goto ERROR0; | ||
382 | |||
383 | /* OK. For now, we presume we have a valid client. We now create the | ||
384 | client structure, even though we cannot fill it completely yet. | ||
385 | But it allows us to access several i2c functions safely */ | ||
386 | |||
387 | if (!(data = kzalloc(sizeof(struct foo_data), GFP_KERNEL))) { | ||
388 | err = -ENOMEM; | ||
389 | goto ERROR0; | ||
390 | } | ||
391 | |||
392 | client = &data->client; | ||
393 | i2c_set_clientdata(client, data); | ||
394 | |||
395 | client->addr = address; | ||
396 | client->adapter = adapter; | ||
397 | client->driver = &foo_driver; | ||
398 | |||
399 | /* Now, we do the remaining detection. If no `force' parameter is used. */ | ||
400 | |||
401 | /* First, the generic detection (if any), that is skipped if any force | ||
402 | parameter was used. */ | ||
403 | if (kind < 0) { | ||
404 | /* The below is of course bogus */ | ||
405 | if (foo_read(client, FOO_REG_GENERIC) != FOO_GENERIC_VALUE) | ||
406 | goto ERROR1; | ||
407 | } | ||
408 | |||
409 | /* Next, specific detection. This is especially important for `sensors' | ||
410 | devices. */ | ||
411 | |||
412 | /* Determine the chip type. Not needed if a `force_CHIPTYPE' parameter | ||
413 | was used. */ | ||
414 | if (kind <= 0) { | ||
415 | i = foo_read(client, FOO_REG_CHIPTYPE); | ||
416 | if (i == FOO_TYPE_1) | ||
417 | kind = chip1; /* As defined in the enum */ | ||
418 | else if (i == FOO_TYPE_2) | ||
419 | kind = chip2; | ||
420 | else { | ||
421 | printk("foo: Ignoring 'force' parameter for unknown chip at " | ||
422 | "adapter %d, address 0x%02x\n",i2c_adapter_id(adapter),address); | ||
423 | goto ERROR1; | ||
424 | } | ||
425 | } | ||
426 | |||
427 | /* Now set the type and chip names */ | ||
428 | if (kind == chip1) { | ||
429 | name = "chip1"; | ||
430 | } else if (kind == chip2) { | ||
431 | name = "chip2"; | ||
432 | } | ||
433 | |||
434 | /* Fill in the remaining client fields. */ | ||
435 | strlcpy(client->name, name, I2C_NAME_SIZE); | ||
436 | data->type = kind; | ||
437 | mutex_init(&data->update_lock); /* Only if you use this field */ | ||
438 | |||
439 | /* Any other initializations in data must be done here too. */ | ||
440 | |||
441 | /* This function can write default values to the client registers, if | ||
442 | needed. */ | ||
443 | foo_init_client(client); | ||
444 | |||
445 | /* Tell the i2c layer a new client has arrived */ | ||
446 | if ((err = i2c_attach_client(client))) | ||
447 | goto ERROR1; | ||
448 | |||
449 | return 0; | ||
450 | |||
451 | /* OK, this is not exactly good programming practice, usually. But it is | ||
452 | very code-efficient in this case. */ | ||
453 | |||
454 | ERROR1: | ||
455 | kfree(data); | ||
456 | ERROR0: | ||
457 | return err; | ||
458 | } | ||
459 | |||
460 | |||
461 | Removing the client (Legacy model) | ||
462 | ================================== | ||
463 | |||
464 | The detach_client call back function is called when a client should be | ||
465 | removed. It may actually fail, but only when panicking. This code is | ||
466 | much simpler than the attachment code, fortunately! | ||
467 | |||
468 | int foo_detach_client(struct i2c_client *client) | ||
469 | { | ||
470 | int err; | ||
471 | |||
472 | /* Try to detach the client from i2c space */ | ||
473 | if ((err = i2c_detach_client(client))) | ||
474 | return err; | ||
475 | |||
476 | kfree(i2c_get_clientdata(client)); | ||
477 | return 0; | ||
478 | } | ||
479 | |||
480 | |||
481 | Initializing the module or kernel | ||
482 | ================================= | ||
483 | |||
484 | When the kernel is booted, or when your foo driver module is inserted, | ||
485 | you have to do some initializing. Fortunately, just attaching (registering) | ||
486 | the driver module is usually enough. | ||
487 | |||
488 | static int __init foo_init(void) | ||
489 | { | ||
490 | int res; | ||
491 | |||
492 | if ((res = i2c_add_driver(&foo_driver))) { | ||
493 | printk("foo: Driver registration failed, module not inserted.\n"); | ||
494 | return res; | ||
495 | } | ||
496 | return 0; | ||
497 | } | ||
498 | |||
499 | static void __exit foo_cleanup(void) | ||
500 | { | ||
501 | i2c_del_driver(&foo_driver); | ||
502 | } | ||
503 | |||
504 | /* Substitute your own name and email address */ | ||
505 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>" | ||
506 | MODULE_DESCRIPTION("Driver for Barf Inc. Foo I2C devices"); | ||
507 | |||
508 | /* a few non-GPL license types are also allowed */ | ||
509 | MODULE_LICENSE("GPL"); | ||
510 | |||
511 | module_init(foo_init); | ||
512 | module_exit(foo_cleanup); | ||
513 | |||
514 | Note that some functions are marked by `__init', and some data structures | ||
515 | by `__initdata'. These functions and structures can be removed after | ||
516 | kernel booting (or module loading) is completed. | ||
517 | 262 | ||
518 | 263 | ||
519 | Power Management | 264 | Power Management |
@@ -548,33 +293,35 @@ Command function | |||
548 | 293 | ||
549 | A generic ioctl-like function call back is supported. You will seldom | 294 | A generic ioctl-like function call back is supported. You will seldom |
550 | need this, and its use is deprecated anyway, so newer design should not | 295 | need this, and its use is deprecated anyway, so newer design should not |
551 | use it. Set it to NULL. | 296 | use it. |
552 | 297 | ||
553 | 298 | ||
554 | Sending and receiving | 299 | Sending and receiving |
555 | ===================== | 300 | ===================== |
556 | 301 | ||
557 | If you want to communicate with your device, there are several functions | 302 | If you want to communicate with your device, there are several functions |
558 | to do this. You can find all of them in i2c.h. | 303 | to do this. You can find all of them in <linux/i2c.h>. |
559 | 304 | ||
560 | If you can choose between plain i2c communication and SMBus level | 305 | If you can choose between plain I2C communication and SMBus level |
561 | communication, please use the last. All adapters understand SMBus level | 306 | communication, please use the latter. All adapters understand SMBus level |
562 | commands, but only some of them understand plain i2c! | 307 | commands, but only some of them understand plain I2C! |
563 | 308 | ||
564 | 309 | ||
565 | Plain i2c communication | 310 | Plain I2C communication |
566 | ----------------------- | 311 | ----------------------- |
567 | 312 | ||
568 | extern int i2c_master_send(struct i2c_client *,const char* ,int); | 313 | int i2c_master_send(struct i2c_client *client, const char *buf, |
569 | extern int i2c_master_recv(struct i2c_client *,char* ,int); | 314 | int count); |
315 | int i2c_master_recv(struct i2c_client *client, char *buf, int count); | ||
570 | 316 | ||
571 | These routines read and write some bytes from/to a client. The client | 317 | These routines read and write some bytes from/to a client. The client |
572 | contains the i2c address, so you do not have to include it. The second | 318 | contains the i2c address, so you do not have to include it. The second |
573 | parameter contains the bytes the read/write, the third the length of the | 319 | parameter contains the bytes to read/write, the third the number of bytes |
574 | buffer. Returned is the actual number of bytes read/written. | 320 | to read/write (must be less than the length of the buffer.) Returned is |
575 | 321 | the actual number of bytes read/written. | |
576 | extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msg, | 322 | |
577 | int num); | 323 | int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msg, |
324 | int num); | ||
578 | 325 | ||
579 | This sends a series of messages. Each message can be a read or write, | 326 | This sends a series of messages. Each message can be a read or write, |
580 | and they can be mixed in any way. The transactions are combined: no | 327 | and they can be mixed in any way. The transactions are combined: no |
@@ -583,49 +330,45 @@ for each message the client address, the number of bytes of the message | |||
583 | and the message data itself. | 330 | and the message data itself. |
584 | 331 | ||
585 | You can read the file `i2c-protocol' for more information about the | 332 | You can read the file `i2c-protocol' for more information about the |
586 | actual i2c protocol. | 333 | actual I2C protocol. |
587 | 334 | ||
588 | 335 | ||
589 | SMBus communication | 336 | SMBus communication |
590 | ------------------- | 337 | ------------------- |
591 | 338 | ||
592 | extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr, | 339 | s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, |
593 | unsigned short flags, | 340 | unsigned short flags, char read_write, u8 command, |
594 | char read_write, u8 command, int size, | 341 | int size, union i2c_smbus_data *data); |
595 | union i2c_smbus_data * data); | 342 | |
596 | 343 | This is the generic SMBus function. All functions below are implemented | |
597 | This is the generic SMBus function. All functions below are implemented | 344 | in terms of it. Never use this function directly! |
598 | in terms of it. Never use this function directly! | 345 | |
599 | 346 | s32 i2c_smbus_read_byte(struct i2c_client *client); | |
600 | 347 | s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value); | |
601 | extern s32 i2c_smbus_read_byte(struct i2c_client * client); | 348 | s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command); |
602 | extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value); | 349 | s32 i2c_smbus_write_byte_data(struct i2c_client *client, |
603 | extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command); | 350 | u8 command, u8 value); |
604 | extern s32 i2c_smbus_write_byte_data(struct i2c_client * client, | 351 | s32 i2c_smbus_read_word_data(struct i2c_client *client, u8 command); |
605 | u8 command, u8 value); | 352 | s32 i2c_smbus_write_word_data(struct i2c_client *client, |
606 | extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command); | 353 | u8 command, u16 value); |
607 | extern s32 i2c_smbus_write_word_data(struct i2c_client * client, | 354 | s32 i2c_smbus_process_call(struct i2c_client *client, |
608 | u8 command, u16 value); | 355 | u8 command, u16 value); |
609 | extern s32 i2c_smbus_process_call(struct i2c_client *client, | 356 | s32 i2c_smbus_read_block_data(struct i2c_client *client, |
610 | u8 command, u16 value); | 357 | u8 command, u8 *values); |
611 | extern s32 i2c_smbus_read_block_data(struct i2c_client * client, | 358 | s32 i2c_smbus_write_block_data(struct i2c_client *client, |
612 | u8 command, u8 *values); | 359 | u8 command, u8 length, const u8 *values); |
613 | extern s32 i2c_smbus_write_block_data(struct i2c_client * client, | 360 | s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, |
614 | u8 command, u8 length, | 361 | u8 command, u8 length, u8 *values); |
615 | u8 *values); | 362 | s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, |
616 | extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, | 363 | u8 command, u8 length, |
617 | u8 command, u8 length, u8 *values); | 364 | const u8 *values); |
618 | extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client, | ||
619 | u8 command, u8 length, | ||
620 | u8 *values); | ||
621 | 365 | ||
622 | These ones were removed from i2c-core because they had no users, but could | 366 | These ones were removed from i2c-core because they had no users, but could |
623 | be added back later if needed: | 367 | be added back later if needed: |
624 | 368 | ||
625 | extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value); | 369 | s32 i2c_smbus_write_quick(struct i2c_client *client, u8 value); |
626 | extern s32 i2c_smbus_block_process_call(struct i2c_client *client, | 370 | s32 i2c_smbus_block_process_call(struct i2c_client *client, |
627 | u8 command, u8 length, | 371 | u8 command, u8 length, u8 *values); |
628 | u8 *values) | ||
629 | 372 | ||
630 | All these transactions return a negative errno value on failure. The 'write' | 373 | All these transactions return a negative errno value on failure. The 'write' |
631 | transactions return 0 on success; the 'read' transactions return the read | 374 | transactions return 0 on success; the 'read' transactions return the read |
@@ -642,7 +385,5 @@ General purpose routines | |||
642 | Below all general purpose routines are listed, that were not mentioned | 385 | Below all general purpose routines are listed, that were not mentioned |
643 | before. | 386 | before. |
644 | 387 | ||
645 | /* This call returns a unique low identifier for each registered adapter. | 388 | /* Return the adapter number for a specific adapter */ |
646 | */ | 389 | int i2c_adapter_id(struct i2c_adapter *adap); |
647 | extern int i2c_adapter_id(struct i2c_adapter *adap); | ||
648 | |||
diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c index 1e328d19cd6d..3e01992230b8 100644 --- a/drivers/i2c/algos/i2c-algo-pcf.c +++ b/drivers/i2c/algos/i2c-algo-pcf.c | |||
@@ -135,7 +135,7 @@ static int wait_for_pin(struct i2c_algo_pcf_data *adap, int *status) { | |||
135 | *status = get_pcf(adap, 1); | 135 | *status = get_pcf(adap, 1); |
136 | #ifndef STUB_I2C | 136 | #ifndef STUB_I2C |
137 | while (timeout-- && (*status & I2C_PCF_PIN)) { | 137 | while (timeout-- && (*status & I2C_PCF_PIN)) { |
138 | adap->waitforpin(); | 138 | adap->waitforpin(adap->data); |
139 | *status = get_pcf(adap, 1); | 139 | *status = get_pcf(adap, 1); |
140 | } | 140 | } |
141 | if (*status & I2C_PCF_LAB) { | 141 | if (*status & I2C_PCF_LAB) { |
@@ -208,7 +208,7 @@ static int pcf_init_8584 (struct i2c_algo_pcf_data *adap) | |||
208 | return -ENXIO; | 208 | return -ENXIO; |
209 | } | 209 | } |
210 | 210 | ||
211 | printk(KERN_DEBUG "i2c-algo-pcf.o: deteted and initialized PCF8584.\n"); | 211 | printk(KERN_DEBUG "i2c-algo-pcf.o: detected and initialized PCF8584.\n"); |
212 | 212 | ||
213 | return 0; | 213 | return 0; |
214 | } | 214 | } |
@@ -331,13 +331,16 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, | |||
331 | int i; | 331 | int i; |
332 | int ret=0, timeout, status; | 332 | int ret=0, timeout, status; |
333 | 333 | ||
334 | if (adap->xfer_begin) | ||
335 | adap->xfer_begin(adap->data); | ||
334 | 336 | ||
335 | /* Check for bus busy */ | 337 | /* Check for bus busy */ |
336 | timeout = wait_for_bb(adap); | 338 | timeout = wait_for_bb(adap); |
337 | if (timeout) { | 339 | if (timeout) { |
338 | DEB2(printk(KERN_ERR "i2c-algo-pcf.o: " | 340 | DEB2(printk(KERN_ERR "i2c-algo-pcf.o: " |
339 | "Timeout waiting for BB in pcf_xfer\n");) | 341 | "Timeout waiting for BB in pcf_xfer\n");) |
340 | return -EIO; | 342 | i = -EIO; |
343 | goto out; | ||
341 | } | 344 | } |
342 | 345 | ||
343 | for (i = 0;ret >= 0 && i < num; i++) { | 346 | for (i = 0;ret >= 0 && i < num; i++) { |
@@ -359,12 +362,14 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, | |||
359 | if (timeout) { | 362 | if (timeout) { |
360 | if (timeout == -EINTR) { | 363 | if (timeout == -EINTR) { |
361 | /* arbitration lost */ | 364 | /* arbitration lost */ |
362 | return (-EINTR); | 365 | i = -EINTR; |
366 | goto out; | ||
363 | } | 367 | } |
364 | i2c_stop(adap); | 368 | i2c_stop(adap); |
365 | DEB2(printk(KERN_ERR "i2c-algo-pcf.o: Timeout waiting " | 369 | DEB2(printk(KERN_ERR "i2c-algo-pcf.o: Timeout waiting " |
366 | "for PIN(1) in pcf_xfer\n");) | 370 | "for PIN(1) in pcf_xfer\n");) |
367 | return (-EREMOTEIO); | 371 | i = -EREMOTEIO; |
372 | goto out; | ||
368 | } | 373 | } |
369 | 374 | ||
370 | #ifndef STUB_I2C | 375 | #ifndef STUB_I2C |
@@ -372,7 +377,8 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, | |||
372 | if (status & I2C_PCF_LRB) { | 377 | if (status & I2C_PCF_LRB) { |
373 | i2c_stop(adap); | 378 | i2c_stop(adap); |
374 | DEB2(printk(KERN_ERR "i2c-algo-pcf.o: No LRB(1) in pcf_xfer\n");) | 379 | DEB2(printk(KERN_ERR "i2c-algo-pcf.o: No LRB(1) in pcf_xfer\n");) |
375 | return (-EREMOTEIO); | 380 | i = -EREMOTEIO; |
381 | goto out; | ||
376 | } | 382 | } |
377 | #endif | 383 | #endif |
378 | 384 | ||
@@ -404,6 +410,9 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, | |||
404 | } | 410 | } |
405 | } | 411 | } |
406 | 412 | ||
413 | out: | ||
414 | if (adap->xfer_end) | ||
415 | adap->xfer_end(adap->data); | ||
407 | return (i); | 416 | return (i); |
408 | } | 417 | } |
409 | 418 | ||
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index acadbc51fc0f..7f95905bbb9d 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig | |||
@@ -97,6 +97,7 @@ config I2C_I801 | |||
97 | ICH9 | 97 | ICH9 |
98 | Tolapai | 98 | Tolapai |
99 | ICH10 | 99 | ICH10 |
100 | PCH | ||
100 | 101 | ||
101 | This driver can also be built as a module. If so, the module | 102 | This driver can also be built as a module. If so, the module |
102 | will be called i2c-i801. | 103 | will be called i2c-i801. |
diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c index 7f38c01fb3a0..0ed3ccb81b63 100644 --- a/drivers/i2c/busses/i2c-elektor.c +++ b/drivers/i2c/busses/i2c-elektor.c | |||
@@ -104,7 +104,8 @@ static int pcf_isa_getclock(void *data) | |||
104 | return (clock); | 104 | return (clock); |
105 | } | 105 | } |
106 | 106 | ||
107 | static void pcf_isa_waitforpin(void) { | 107 | static void pcf_isa_waitforpin(void *data) |
108 | { | ||
108 | DEFINE_WAIT(wait); | 109 | DEFINE_WAIT(wait); |
109 | int timeout = 2; | 110 | int timeout = 2; |
110 | unsigned long flags; | 111 | unsigned long flags; |
diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c index 1098f21ace13..648aa7baff83 100644 --- a/drivers/i2c/busses/i2c-hydra.c +++ b/drivers/i2c/busses/i2c-hydra.c | |||
@@ -123,7 +123,7 @@ static int __devinit hydra_probe(struct pci_dev *dev, | |||
123 | hydra_adap.name)) | 123 | hydra_adap.name)) |
124 | return -EBUSY; | 124 | return -EBUSY; |
125 | 125 | ||
126 | hydra_bit_data.data = ioremap(base, pci_resource_len(dev, 0)); | 126 | hydra_bit_data.data = pci_ioremap_bar(dev, 0); |
127 | if (hydra_bit_data.data == NULL) { | 127 | if (hydra_bit_data.data == NULL) { |
128 | release_mem_region(base+offsetof(struct Hydra, CachePD), 4); | 128 | release_mem_region(base+offsetof(struct Hydra, CachePD), 4); |
129 | return -ENODEV; | 129 | return -ENODEV; |
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index dc7ea32b69a8..5123eb69a971 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c | |||
@@ -41,6 +41,7 @@ | |||
41 | Tolapai 0x5032 32 hard yes yes yes | 41 | Tolapai 0x5032 32 hard yes yes yes |
42 | ICH10 0x3a30 32 hard yes yes yes | 42 | ICH10 0x3a30 32 hard yes yes yes |
43 | ICH10 0x3a60 32 hard yes yes yes | 43 | ICH10 0x3a60 32 hard yes yes yes |
44 | PCH 0x3b30 32 hard yes yes yes | ||
44 | 45 | ||
45 | Features supported by this driver: | 46 | Features supported by this driver: |
46 | Software PEC no | 47 | Software PEC no |
@@ -576,6 +577,7 @@ static struct pci_device_id i801_ids[] = { | |||
576 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TOLAPAI_1) }, | 577 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TOLAPAI_1) }, |
577 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_4) }, | 578 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_4) }, |
578 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_5) }, | 579 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_5) }, |
580 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PCH_SMBUS) }, | ||
579 | { 0, } | 581 | { 0, } |
580 | }; | 582 | }; |
581 | 583 | ||
@@ -599,6 +601,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id | |||
599 | case PCI_DEVICE_ID_INTEL_TOLAPAI_1: | 601 | case PCI_DEVICE_ID_INTEL_TOLAPAI_1: |
600 | case PCI_DEVICE_ID_INTEL_ICH10_4: | 602 | case PCI_DEVICE_ID_INTEL_ICH10_4: |
601 | case PCI_DEVICE_ID_INTEL_ICH10_5: | 603 | case PCI_DEVICE_ID_INTEL_ICH10_5: |
604 | case PCI_DEVICE_ID_INTEL_PCH_SMBUS: | ||
602 | i801_features |= FEATURE_I2C_BLOCK_READ; | 605 | i801_features |= FEATURE_I2C_BLOCK_READ; |
603 | /* fall through */ | 606 | /* fall through */ |
604 | case PCI_DEVICE_ID_INTEL_82801DB_3: | 607 | case PCI_DEVICE_ID_INTEL_82801DB_3: |
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig index 17356827b93d..4c35702830ce 100644 --- a/drivers/i2c/chips/Kconfig +++ b/drivers/i2c/chips/Kconfig | |||
@@ -1,6 +1,8 @@ | |||
1 | # | 1 | # |
2 | # Miscellaneous I2C chip drivers configuration | 2 | # Miscellaneous I2C chip drivers configuration |
3 | # | 3 | # |
4 | # *** DEPRECATED! Do not add new entries! See Makefile *** | ||
5 | # | ||
4 | 6 | ||
5 | menu "Miscellaneous I2C Chip support" | 7 | menu "Miscellaneous I2C Chip support" |
6 | 8 | ||
diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile index ca520fa143d6..23d2a31b0a64 100644 --- a/drivers/i2c/chips/Makefile +++ b/drivers/i2c/chips/Makefile | |||
@@ -1,7 +1,8 @@ | |||
1 | # | 1 | # |
2 | # Makefile for miscellaneous I2C chip drivers. | 2 | # Makefile for miscellaneous I2C chip drivers. |
3 | # | 3 | # |
4 | # Think twice before you add a new driver to this directory. | 4 | # Do not add new drivers to this directory! It is DEPRECATED. |
5 | # | ||
5 | # Device drivers are better grouped according to the functionality they | 6 | # Device drivers are better grouped according to the functionality they |
6 | # implement rather than to the bus they are connected to. In particular: | 7 | # implement rather than to the bus they are connected to. In particular: |
7 | # * Hardware monitoring chip drivers go to drivers/hwmon | 8 | # * Hardware monitoring chip drivers go to drivers/hwmon |
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 42e852d79ffa..5a485c22660a 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c | |||
@@ -266,6 +266,9 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info) | |||
266 | 266 | ||
267 | client->dev.platform_data = info->platform_data; | 267 | client->dev.platform_data = info->platform_data; |
268 | 268 | ||
269 | if (info->archdata) | ||
270 | client->dev.archdata = *info->archdata; | ||
271 | |||
269 | client->flags = info->flags; | 272 | client->flags = info->flags; |
270 | client->addr = info->addr; | 273 | client->addr = info->addr; |
271 | client->irq = info->irq; | 274 | client->irq = info->irq; |
diff --git a/include/linux/device.h b/include/linux/device.h index 987f5912720a..1a3686d15f98 100644 --- a/include/linux/device.h +++ b/include/linux/device.h | |||
@@ -450,7 +450,7 @@ static inline void set_dev_node(struct device *dev, int node) | |||
450 | } | 450 | } |
451 | #endif | 451 | #endif |
452 | 452 | ||
453 | static inline void *dev_get_drvdata(struct device *dev) | 453 | static inline void *dev_get_drvdata(const struct device *dev) |
454 | { | 454 | { |
455 | return dev->driver_data; | 455 | return dev->driver_data; |
456 | } | 456 | } |
diff --git a/include/linux/i2c-algo-pcf.h b/include/linux/i2c-algo-pcf.h index 0177d280f733..0f91a957a690 100644 --- a/include/linux/i2c-algo-pcf.h +++ b/include/linux/i2c-algo-pcf.h | |||
@@ -31,7 +31,10 @@ struct i2c_algo_pcf_data { | |||
31 | int (*getpcf) (void *data, int ctl); | 31 | int (*getpcf) (void *data, int ctl); |
32 | int (*getown) (void *data); | 32 | int (*getown) (void *data); |
33 | int (*getclock) (void *data); | 33 | int (*getclock) (void *data); |
34 | void (*waitforpin) (void); | 34 | void (*waitforpin) (void *data); |
35 | |||
36 | void (*xfer_begin) (void *data); | ||
37 | void (*xfer_end) (void *data); | ||
35 | 38 | ||
36 | /* Multi-master lost arbitration back-off delay (msecs) | 39 | /* Multi-master lost arbitration back-off delay (msecs) |
37 | * This should be set by the bus adapter or knowledgable client | 40 | * This should be set by the bus adapter or knowledgable client |
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 06115128047f..33a5992d4936 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h | |||
@@ -53,45 +53,44 @@ struct i2c_board_info; | |||
53 | * transmit one message at a time, a more complex version can be used to | 53 | * transmit one message at a time, a more complex version can be used to |
54 | * transmit an arbitrary number of messages without interruption. | 54 | * transmit an arbitrary number of messages without interruption. |
55 | */ | 55 | */ |
56 | extern int i2c_master_send(struct i2c_client *,const char* ,int); | 56 | extern int i2c_master_send(struct i2c_client *client, const char *buf, |
57 | extern int i2c_master_recv(struct i2c_client *,char* ,int); | 57 | int count); |
58 | extern int i2c_master_recv(struct i2c_client *client, char *buf, int count); | ||
58 | 59 | ||
59 | /* Transfer num messages. | 60 | /* Transfer num messages. |
60 | */ | 61 | */ |
61 | extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num); | 62 | extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, |
62 | 63 | int num); | |
63 | 64 | ||
64 | /* This is the very generalized SMBus access routine. You probably do not | 65 | /* This is the very generalized SMBus access routine. You probably do not |
65 | want to use this, though; one of the functions below may be much easier, | 66 | want to use this, though; one of the functions below may be much easier, |
66 | and probably just as fast. | 67 | and probably just as fast. |
67 | Note that we use i2c_adapter here, because you do not need a specific | 68 | Note that we use i2c_adapter here, because you do not need a specific |
68 | smbus adapter to call this function. */ | 69 | smbus adapter to call this function. */ |
69 | extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr, | 70 | extern s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, |
70 | unsigned short flags, | 71 | unsigned short flags, char read_write, u8 command, |
71 | char read_write, u8 command, int size, | 72 | int size, union i2c_smbus_data *data); |
72 | union i2c_smbus_data * data); | ||
73 | 73 | ||
74 | /* Now follow the 'nice' access routines. These also document the calling | 74 | /* Now follow the 'nice' access routines. These also document the calling |
75 | conventions of i2c_smbus_xfer. */ | 75 | conventions of i2c_smbus_xfer. */ |
76 | 76 | ||
77 | extern s32 i2c_smbus_read_byte(struct i2c_client * client); | 77 | extern s32 i2c_smbus_read_byte(struct i2c_client *client); |
78 | extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value); | 78 | extern s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value); |
79 | extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command); | 79 | extern s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command); |
80 | extern s32 i2c_smbus_write_byte_data(struct i2c_client * client, | 80 | extern s32 i2c_smbus_write_byte_data(struct i2c_client *client, |
81 | u8 command, u8 value); | 81 | u8 command, u8 value); |
82 | extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command); | 82 | extern s32 i2c_smbus_read_word_data(struct i2c_client *client, u8 command); |
83 | extern s32 i2c_smbus_write_word_data(struct i2c_client * client, | 83 | extern s32 i2c_smbus_write_word_data(struct i2c_client *client, |
84 | u8 command, u16 value); | 84 | u8 command, u16 value); |
85 | /* Returns the number of read bytes */ | 85 | /* Returns the number of read bytes */ |
86 | extern s32 i2c_smbus_read_block_data(struct i2c_client *client, | 86 | extern s32 i2c_smbus_read_block_data(struct i2c_client *client, |
87 | u8 command, u8 *values); | 87 | u8 command, u8 *values); |
88 | extern s32 i2c_smbus_write_block_data(struct i2c_client * client, | 88 | extern s32 i2c_smbus_write_block_data(struct i2c_client *client, |
89 | u8 command, u8 length, | 89 | u8 command, u8 length, const u8 *values); |
90 | const u8 *values); | ||
91 | /* Returns the number of read bytes */ | 90 | /* Returns the number of read bytes */ |
92 | extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, | 91 | extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, |
93 | u8 command, u8 length, u8 *values); | 92 | u8 command, u8 length, u8 *values); |
94 | extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client, | 93 | extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, |
95 | u8 command, u8 length, | 94 | u8 command, u8 length, |
96 | const u8 *values); | 95 | const u8 *values); |
97 | 96 | ||
@@ -169,7 +168,7 @@ struct i2c_driver { | |||
169 | /* a ioctl like command that can be used to perform specific functions | 168 | /* a ioctl like command that can be used to perform specific functions |
170 | * with the device. | 169 | * with the device. |
171 | */ | 170 | */ |
172 | int (*command)(struct i2c_client *client,unsigned int cmd, void *arg); | 171 | int (*command)(struct i2c_client *client, unsigned int cmd, void *arg); |
173 | 172 | ||
174 | struct device_driver driver; | 173 | struct device_driver driver; |
175 | const struct i2c_device_id *id_table; | 174 | const struct i2c_device_id *id_table; |
@@ -224,14 +223,14 @@ static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj) | |||
224 | return to_i2c_client(dev); | 223 | return to_i2c_client(dev); |
225 | } | 224 | } |
226 | 225 | ||
227 | static inline void *i2c_get_clientdata (struct i2c_client *dev) | 226 | static inline void *i2c_get_clientdata(const struct i2c_client *dev) |
228 | { | 227 | { |
229 | return dev_get_drvdata (&dev->dev); | 228 | return dev_get_drvdata(&dev->dev); |
230 | } | 229 | } |
231 | 230 | ||
232 | static inline void i2c_set_clientdata (struct i2c_client *dev, void *data) | 231 | static inline void i2c_set_clientdata(struct i2c_client *dev, void *data) |
233 | { | 232 | { |
234 | dev_set_drvdata (&dev->dev, data); | 233 | dev_set_drvdata(&dev->dev, data); |
235 | } | 234 | } |
236 | 235 | ||
237 | /** | 236 | /** |
@@ -240,6 +239,7 @@ static inline void i2c_set_clientdata (struct i2c_client *dev, void *data) | |||
240 | * @flags: to initialize i2c_client.flags | 239 | * @flags: to initialize i2c_client.flags |
241 | * @addr: stored in i2c_client.addr | 240 | * @addr: stored in i2c_client.addr |
242 | * @platform_data: stored in i2c_client.dev.platform_data | 241 | * @platform_data: stored in i2c_client.dev.platform_data |
242 | * @archdata: copied into i2c_client.dev.archdata | ||
243 | * @irq: stored in i2c_client.irq | 243 | * @irq: stored in i2c_client.irq |
244 | * | 244 | * |
245 | * I2C doesn't actually support hardware probing, although controllers and | 245 | * I2C doesn't actually support hardware probing, although controllers and |
@@ -259,6 +259,7 @@ struct i2c_board_info { | |||
259 | unsigned short flags; | 259 | unsigned short flags; |
260 | unsigned short addr; | 260 | unsigned short addr; |
261 | void *platform_data; | 261 | void *platform_data; |
262 | struct dev_archdata *archdata; | ||
262 | int irq; | 263 | int irq; |
263 | }; | 264 | }; |
264 | 265 | ||
@@ -272,7 +273,7 @@ struct i2c_board_info { | |||
272 | * fields (such as associated irq, or device-specific platform_data) | 273 | * fields (such as associated irq, or device-specific platform_data) |
273 | * are provided using conventional syntax. | 274 | * are provided using conventional syntax. |
274 | */ | 275 | */ |
275 | #define I2C_BOARD_INFO(dev_type,dev_addr) \ | 276 | #define I2C_BOARD_INFO(dev_type, dev_addr) \ |
276 | .type = (dev_type), .addr = (dev_addr) | 277 | .type = (dev_type), .addr = (dev_addr) |
277 | 278 | ||
278 | 279 | ||
@@ -306,10 +307,12 @@ extern void i2c_unregister_device(struct i2c_client *); | |||
306 | */ | 307 | */ |
307 | #ifdef CONFIG_I2C_BOARDINFO | 308 | #ifdef CONFIG_I2C_BOARDINFO |
308 | extern int | 309 | extern int |
309 | i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned n); | 310 | i2c_register_board_info(int busnum, struct i2c_board_info const *info, |
311 | unsigned n); | ||
310 | #else | 312 | #else |
311 | static inline int | 313 | static inline int |
312 | i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned n) | 314 | i2c_register_board_info(int busnum, struct i2c_board_info const *info, |
315 | unsigned n) | ||
313 | { | 316 | { |
314 | return 0; | 317 | return 0; |
315 | } | 318 | } |
@@ -328,11 +331,11 @@ struct i2c_algorithm { | |||
328 | using common I2C messages */ | 331 | using common I2C messages */ |
329 | /* master_xfer should return the number of messages successfully | 332 | /* master_xfer should return the number of messages successfully |
330 | processed, or a negative value on error */ | 333 | processed, or a negative value on error */ |
331 | int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs, | 334 | int (*master_xfer)(struct i2c_adapter *adap, struct i2c_msg *msgs, |
332 | int num); | 335 | int num); |
333 | int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr, | 336 | int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr, |
334 | unsigned short flags, char read_write, | 337 | unsigned short flags, char read_write, |
335 | u8 command, int size, union i2c_smbus_data * data); | 338 | u8 command, int size, union i2c_smbus_data *data); |
336 | 339 | ||
337 | /* To determine what the adapter supports */ | 340 | /* To determine what the adapter supports */ |
338 | u32 (*functionality) (struct i2c_adapter *); | 341 | u32 (*functionality) (struct i2c_adapter *); |
@@ -345,7 +348,7 @@ struct i2c_algorithm { | |||
345 | struct i2c_adapter { | 348 | struct i2c_adapter { |
346 | struct module *owner; | 349 | struct module *owner; |
347 | unsigned int id; | 350 | unsigned int id; |
348 | unsigned int class; | 351 | unsigned int class; /* classes to allow probing for */ |
349 | const struct i2c_algorithm *algo; /* the algorithm to access the bus */ | 352 | const struct i2c_algorithm *algo; /* the algorithm to access the bus */ |
350 | void *algo_data; | 353 | void *algo_data; |
351 | 354 | ||
@@ -369,14 +372,14 @@ struct i2c_adapter { | |||
369 | }; | 372 | }; |
370 | #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) | 373 | #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) |
371 | 374 | ||
372 | static inline void *i2c_get_adapdata (struct i2c_adapter *dev) | 375 | static inline void *i2c_get_adapdata(const struct i2c_adapter *dev) |
373 | { | 376 | { |
374 | return dev_get_drvdata (&dev->dev); | 377 | return dev_get_drvdata(&dev->dev); |
375 | } | 378 | } |
376 | 379 | ||
377 | static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data) | 380 | static inline void i2c_set_adapdata(struct i2c_adapter *dev, void *data) |
378 | { | 381 | { |
379 | dev_set_drvdata (&dev->dev, data); | 382 | dev_set_drvdata(&dev->dev, data); |
380 | } | 383 | } |
381 | 384 | ||
382 | /*flags for the client struct: */ | 385 | /*flags for the client struct: */ |
@@ -449,7 +452,7 @@ extern int i2c_probe(struct i2c_adapter *adapter, | |||
449 | const struct i2c_client_address_data *address_data, | 452 | const struct i2c_client_address_data *address_data, |
450 | int (*found_proc) (struct i2c_adapter *, int, int)); | 453 | int (*found_proc) (struct i2c_adapter *, int, int)); |
451 | 454 | ||
452 | extern struct i2c_adapter* i2c_get_adapter(int id); | 455 | extern struct i2c_adapter *i2c_get_adapter(int id); |
453 | extern void i2c_put_adapter(struct i2c_adapter *adap); | 456 | extern void i2c_put_adapter(struct i2c_adapter *adap); |
454 | 457 | ||
455 | 458 | ||
@@ -465,7 +468,7 @@ static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func) | |||
465 | return (func & i2c_get_functionality(adap)) == func; | 468 | return (func & i2c_get_functionality(adap)) == func; |
466 | } | 469 | } |
467 | 470 | ||
468 | /* Return id number for a specific adapter */ | 471 | /* Return the adapter number for a specific adapter */ |
469 | static inline int i2c_adapter_id(struct i2c_adapter *adap) | 472 | static inline int i2c_adapter_id(struct i2c_adapter *adap) |
470 | { | 473 | { |
471 | return adap->nr; | 474 | return adap->nr; |
@@ -526,7 +529,7 @@ struct i2c_msg { | |||
526 | 529 | ||
527 | #define I2C_FUNC_I2C 0x00000001 | 530 | #define I2C_FUNC_I2C 0x00000001 |
528 | #define I2C_FUNC_10BIT_ADDR 0x00000002 | 531 | #define I2C_FUNC_10BIT_ADDR 0x00000002 |
529 | #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */ | 532 | #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_NOSTART etc. */ |
530 | #define I2C_FUNC_SMBUS_PEC 0x00000008 | 533 | #define I2C_FUNC_SMBUS_PEC 0x00000008 |
531 | #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ | 534 | #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ |
532 | #define I2C_FUNC_SMBUS_QUICK 0x00010000 | 535 | #define I2C_FUNC_SMBUS_QUICK 0x00010000 |
@@ -541,30 +544,26 @@ struct i2c_msg { | |||
541 | #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 | 544 | #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 |
542 | #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */ | 545 | #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */ |
543 | #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ | 546 | #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ |
544 | #define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */ | 547 | |
545 | #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */ | 548 | #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ |
546 | 549 | I2C_FUNC_SMBUS_WRITE_BYTE) | |
547 | #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ | 550 | #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ |
548 | I2C_FUNC_SMBUS_WRITE_BYTE) | 551 | I2C_FUNC_SMBUS_WRITE_BYTE_DATA) |
549 | #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ | 552 | #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ |
550 | I2C_FUNC_SMBUS_WRITE_BYTE_DATA) | 553 | I2C_FUNC_SMBUS_WRITE_WORD_DATA) |
551 | #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ | 554 | #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ |
552 | I2C_FUNC_SMBUS_WRITE_WORD_DATA) | 555 | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) |
553 | #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ | 556 | #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ |
554 | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) | 557 | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) |
555 | #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ | 558 | |
556 | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) | 559 | #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \ |
557 | #define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \ | 560 | I2C_FUNC_SMBUS_BYTE | \ |
558 | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2) | 561 | I2C_FUNC_SMBUS_BYTE_DATA | \ |
559 | 562 | I2C_FUNC_SMBUS_WORD_DATA | \ | |
560 | #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \ | 563 | I2C_FUNC_SMBUS_PROC_CALL | \ |
561 | I2C_FUNC_SMBUS_BYTE | \ | 564 | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ |
562 | I2C_FUNC_SMBUS_BYTE_DATA | \ | 565 | I2C_FUNC_SMBUS_I2C_BLOCK | \ |
563 | I2C_FUNC_SMBUS_WORD_DATA | \ | 566 | I2C_FUNC_SMBUS_PEC) |
564 | I2C_FUNC_SMBUS_PROC_CALL | \ | ||
565 | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ | ||
566 | I2C_FUNC_SMBUS_I2C_BLOCK | \ | ||
567 | I2C_FUNC_SMBUS_PEC) | ||
568 | 567 | ||
569 | /* | 568 | /* |
570 | * Data for SMBus Messages | 569 | * Data for SMBus Messages |
@@ -574,7 +573,7 @@ union i2c_smbus_data { | |||
574 | __u8 byte; | 573 | __u8 byte; |
575 | __u16 word; | 574 | __u16 word; |
576 | __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */ | 575 | __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */ |
577 | /* and one more for user-space compatibility */ | 576 | /* and one more for user-space compatibility */ |
578 | }; | 577 | }; |
579 | 578 | ||
580 | /* i2c_smbus_xfer read or write markers */ | 579 | /* i2c_smbus_xfer read or write markers */ |
@@ -602,21 +601,21 @@ union i2c_smbus_data { | |||
602 | 601 | ||
603 | /* Default fill of many variables */ | 602 | /* Default fill of many variables */ |
604 | #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 603 | #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
605 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 604 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
606 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 605 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
607 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 606 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
608 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 607 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
609 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 608 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
610 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 609 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
611 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 610 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
612 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 611 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
613 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 612 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
614 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 613 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
615 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 614 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
616 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 615 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
617 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 616 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
618 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ | 617 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ |
619 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END} | 618 | I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END} |
620 | 619 | ||
621 | /* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the | 620 | /* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the |
622 | module header */ | 621 | module header */ |
@@ -625,7 +624,7 @@ union i2c_smbus_data { | |||
625 | static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \ | 624 | static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \ |
626 | static unsigned int var##_num; \ | 625 | static unsigned int var##_num; \ |
627 | module_param_array(var, short, &var##_num, 0); \ | 626 | module_param_array(var, short, &var##_num, 0); \ |
628 | MODULE_PARM_DESC(var,desc) | 627 | MODULE_PARM_DESC(var, desc) |
629 | 628 | ||
630 | #define I2C_CLIENT_MODULE_PARM_FORCE(name) \ | 629 | #define I2C_CLIENT_MODULE_PARM_FORCE(name) \ |
631 | I2C_CLIENT_MODULE_PARM(force_##name, \ | 630 | I2C_CLIENT_MODULE_PARM(force_##name, \ |