diff options
Diffstat (limited to 'meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod')
5 files changed, 846 insertions, 0 deletions
diff --git a/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/COPYING b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/COPYING new file mode 100644 index 0000000..6d45519 --- /dev/null +++ b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/COPYING @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + a) Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange; or, + + b) Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + + c) Accompany it with the information you received as to the offer + to distribute corresponding source code. (This alternative is + allowed only for noncommercial distribution and only if you + received the program in object code or executable form with such + an offer, in accord with Subsection b above.) + +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. + +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. + + 4. You may not copy, modify, sublicense, or distribute the Program +except as expressly provided under this License. Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + + 7. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 8. If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 9. The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/Makefile b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/Makefile new file mode 100644 index 0000000..4be7b62 --- /dev/null +++ b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/Makefile @@ -0,0 +1,31 @@ +# Copyright 2015-present Facebook. All Rights Reserved. +# +# This program file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +# for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program in a file named COPYING; if not, write to the +# Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, +# Boston, MA 02110-1301 USA + +obj-m := i2c_dev_sysfs.o + +SRC := $(shell pwd) + +all: + $(MAKE) -C $(KERNEL_SRC) M=$(SRC) + +modules_install: + $(MAKE) -C $(KERNEL_SRC) M=$(SRC) modules_install + +clean: + rm -f *.o *~ core .depend .*.cmd *.ko *.mod.c + rm -f Module.markers Module.symvers modules.order + rm -rf .tmp_versions Modules.symvers diff --git a/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/i2c_dev_sysfs.c b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/i2c_dev_sysfs.c new file mode 100644 index 0000000..96c1b98 --- /dev/null +++ b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/i2c_dev_sysfs.c @@ -0,0 +1,349 @@ +/* + * i2c_dev_sysfs.c - The i2c device sysfs library + * + * Copyright 2015-present Facebook. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +//#define DEBUG + +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/sysfs.h> + +#include "i2c_dev_sysfs.h" + +#ifdef DEBUG + +#define PP_DEBUG(fmt, ...) do { \ + printk(KERN_DEBUG "%s:%d " fmt "\n", \ + __FUNCTION__, __LINE__, ##__VA_ARGS__); \ +} while (0) + +#else /* !DEBUG */ + +#define PP_DEBUG(fmt, ...) + +#endif + +ssize_t i2c_dev_show_label(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + i2c_sysfs_attr_st *i2c_attr = TO_I2C_SYSFS_ATTR(attr); + const i2c_dev_attr_st *dev_attr = i2c_attr->isa_i2c_attr; + + if (dev_attr->ida_help) { + return sprintf(buf, "%s\n", dev_attr->ida_help); + } + return sprintf(buf, "%s\n", dev_attr->ida_name); +} +EXPORT_SYMBOL_GPL(i2c_dev_show_label); + +int i2c_dev_read_byte(struct device *dev, + struct device_attribute *attr) +{ + struct i2c_client *client = to_i2c_client(dev); + i2c_dev_data_st *data = i2c_get_clientdata(client); + i2c_sysfs_attr_st *i2c_attr = TO_I2C_SYSFS_ATTR(attr); + const i2c_dev_attr_st *dev_attr = i2c_attr->isa_i2c_attr; + int val; + int val_mask; + + val_mask = ~(((-1) >> (dev_attr->ida_n_bits)) << (dev_attr->ida_n_bits)); + + mutex_lock(&data->idd_lock); + + val = i2c_smbus_read_byte_data(client, dev_attr->ida_reg); + + mutex_unlock(&data->idd_lock); + + if (val < 0) { + /* error case */ + return val; + } + + val = (val >> dev_attr->ida_bit_offset) & val_mask; + return val; +} +EXPORT_SYMBOL_GPL(i2c_dev_read_byte); + +int i2c_dev_read_nbytes(struct device *dev, + struct device_attribute *attr, + uint8_t values[], + int nbytes) +{ + struct i2c_client *client = to_i2c_client(dev); + i2c_dev_data_st *data = i2c_get_clientdata(client); + i2c_sysfs_attr_st *i2c_attr = TO_I2C_SYSFS_ATTR(attr); + const i2c_dev_attr_st *dev_attr = i2c_attr->isa_i2c_attr; + int i; + + mutex_lock(&data->idd_lock); + for (i = 0; i < nbytes; ++i) { + values[i] = i2c_smbus_read_byte_data(client, dev_attr->ida_reg + i); + if (values[i] < 0) { + mutex_unlock(&data->idd_lock); + return values[i]; + } + } + mutex_unlock(&data->idd_lock); + return nbytes; +} +EXPORT_SYMBOL_GPL(i2c_dev_read_nbytes); + +int i2c_dev_read_word_littleendian(struct device *dev, + struct device_attribute *attr) +{ + uint8_t values[2]; + int ret_val; + + ret_val = i2c_dev_read_nbytes(dev, attr, values, 2); + if (ret_val < 0) { + return ret_val; + } + // values[0] : LSB + // values[1] : MSB + return ((values[1]<<8) + values[0]); +} +EXPORT_SYMBOL_GPL(i2c_dev_read_word_littleendian); + +int i2c_dev_read_word_bigendian(struct device *dev, + struct device_attribute *attr) +{ + uint8_t values[2]; + int ret_val; + + ret_val = i2c_dev_read_nbytes(dev, attr, values, 2); + if (ret_val < 0) { + return ret_val; + } + // values[0] : MSB + // values[1] : LSB + return ((values[0]<<8) + values[1]); +} +EXPORT_SYMBOL_GPL(i2c_dev_read_word_bigendian); + +ssize_t i2c_dev_show_ascii(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + i2c_sysfs_attr_st *i2c_attr = TO_I2C_SYSFS_ATTR(attr); + const i2c_dev_attr_st *dev_attr = i2c_attr->isa_i2c_attr; + int nbytes, ret_val; + + nbytes = (dev_attr->ida_n_bits) / 8; + ret_val = i2c_dev_read_nbytes(dev, attr, buf, nbytes); + if (ret_val < 0) { + return ret_val; + } + //buf[] : ascii data + buf[nbytes] = '\n'; + return (nbytes + 1); +} +EXPORT_SYMBOL_GPL(i2c_dev_show_ascii); + +static ssize_t i2c_dev_sysfs_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + i2c_dev_data_st *data = i2c_get_clientdata(client); + i2c_sysfs_attr_st *i2c_attr = TO_I2C_SYSFS_ATTR(attr); + const i2c_dev_attr_st *dev_attr = i2c_attr->isa_i2c_attr; + int val; + int val_mask; + + if (!dev_attr->ida_show) { + return -EOPNOTSUPP; + } + + if (dev_attr->ida_show != I2C_DEV_ATTR_SHOW_DEFAULT) { + return dev_attr->ida_show(dev, attr, buf); + } + + val_mask = ~(((-1) >> (dev_attr->ida_n_bits)) << (dev_attr->ida_n_bits)); + + mutex_lock(&data->idd_lock); + + /* default handling */ + val = i2c_smbus_read_byte_data(client, dev_attr->ida_reg); + + mutex_unlock(&data->idd_lock); + + if (val < 0) { + /* error case */ + return val; + } + + val = (val >> dev_attr->ida_bit_offset) & val_mask; + + return scnprintf(buf, PAGE_SIZE, "0x%x%s%s\n", val, + (dev_attr->ida_help) ? "\n\nNote:\n" : "", + (dev_attr->ida_help) ? dev_attr->ida_help : ""); +} + +static ssize_t i2c_dev_sysfs_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + i2c_dev_data_st *data = i2c_get_clientdata(client); + i2c_sysfs_attr_st *i2c_attr = TO_I2C_SYSFS_ATTR(attr); + const i2c_dev_attr_st *dev_attr = i2c_attr->isa_i2c_attr; + int val; + int req_val; + int req_val_mask; + + if (!dev_attr->ida_store) { + return -EOPNOTSUPP; + } + + if (dev_attr->ida_store != I2C_DEV_ATTR_STORE_DEFAULT) { + return dev_attr->ida_store(dev, attr, buf, count); + } + + /* parse the buffer */ + if (sscanf(buf, "%i", &req_val) <= 0) { + return -EINVAL; + } + req_val_mask = ~(((-1) >> (dev_attr->ida_n_bits)) << (dev_attr->ida_n_bits)); + req_val &= req_val_mask; + + mutex_lock(&data->idd_lock); + + /* default handling, first read back the current value */ + val = i2c_smbus_read_byte_data(client, dev_attr->ida_reg); + + if (val < 0) { + /* fail to read */ + goto unlock_out; + } + + /* mask out all bits for the value requested */ + val &= ~(req_val_mask << dev_attr->ida_bit_offset); + val |= req_val << dev_attr->ida_bit_offset; + + val = i2c_smbus_write_byte_data(client, dev_attr->ida_reg, val); + + unlock_out: + mutex_unlock(&data->idd_lock); + + if (val < 0) { + /* error case */ + return val; + } + + return count; +} + +void i2c_dev_sysfs_data_clean(struct i2c_client *client, i2c_dev_data_st *data) +{ + if (!data) { + return; + } + if (data->idd_hwmon_dev) { + hwmon_device_unregister(data->idd_hwmon_dev); + } + if (data->idd_attr_group.attrs) { + sysfs_remove_group(&client->dev.kobj, &data->idd_attr_group); + kfree(data->idd_attr_group.attrs); + } + if (data->idd_attrs) { + kfree(data->idd_attrs); + } + memset(data, 0, sizeof(*data)); +} +EXPORT_SYMBOL_GPL(i2c_dev_sysfs_data_clean); + +int i2c_dev_sysfs_data_init(struct i2c_client *client, + i2c_dev_data_st *data, + const i2c_dev_attr_st *dev_attrs, + int n_attrs) +{ + int i; + int err; + i2c_sysfs_attr_st *cur_attr; + const i2c_dev_attr_st *cur_dev_attr; + struct attribute **cur_grp_attr; + + memset(data, 0, sizeof(*data)); + + i2c_set_clientdata(client, data); + mutex_init(&data->idd_lock); + + /* allocate all attribute */ + data->idd_attrs = kzalloc(sizeof(*data->idd_attrs) * n_attrs, GFP_KERNEL); + /* allocate the attribute group. +1 for the last NULL */ + data->idd_attr_group.attrs + = kzalloc(sizeof(*data->idd_attr_group.attrs) * (n_attrs + 1), GFP_KERNEL); + if (!data->idd_attrs || !data->idd_attr_group.attrs) { + err = -ENOMEM; + goto exit_cleanup; + } + PP_DEBUG("Allocated %u attributes", n_attrs); + + for (i = 0, + cur_attr = &data->idd_attrs[0], + cur_grp_attr = &data->idd_attr_group.attrs[0], + cur_dev_attr = dev_attrs; + i < n_attrs; + i++, cur_attr++, cur_grp_attr++, cur_dev_attr++) { + + mode_t mode = S_IRUGO; + if (cur_dev_attr->ida_store) { + mode |= S_IWUSR; + } + cur_attr->isa_dev_attr.attr.name = cur_dev_attr->ida_name; + cur_attr->isa_dev_attr.attr.mode = mode; + cur_attr->isa_dev_attr.show = i2c_dev_sysfs_show; + cur_attr->isa_dev_attr.store = i2c_dev_sysfs_store; + *cur_grp_attr = &cur_attr->isa_dev_attr.attr; + cur_attr->isa_i2c_attr = cur_dev_attr; + PP_DEBUG("Created attribute \"%s\"", cur_attr->isa_dev_attr.attr.name); + } + + /* Register sysfs hooks */ + if ((err = sysfs_create_group(&client->dev.kobj, &data->idd_attr_group))) { + goto exit_cleanup; + } + + data->idd_hwmon_dev = hwmon_device_register(&client->dev); + if (IS_ERR(data->idd_hwmon_dev)) { + err = PTR_ERR(data->idd_hwmon_dev); + data->idd_hwmon_dev = NULL; + goto exit_cleanup; + } + + PP_DEBUG("i2c device sysfs init data done"); + + return 0; + + exit_cleanup: + i2c_dev_sysfs_data_clean(client, data); + return err; +} +EXPORT_SYMBOL_GPL(i2c_dev_sysfs_data_init); + + +MODULE_AUTHOR("Tian Fang <tfang@fb.com>"); +MODULE_DESCRIPTION("i2c device sysfs attribute library"); +MODULE_LICENSE("GPL"); diff --git a/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/i2c_dev_sysfs.h b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/i2c_dev_sysfs.h new file mode 100644 index 0000000..47862cc --- /dev/null +++ b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/files/i2c_dev_sysfs.h @@ -0,0 +1,84 @@ +/* + * i2c_dev_sysfs.h - The i2c device sysfs library header + * + * Copyright 2015-present Facebook. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef I2C_DEV_SYSFS_H +#define I2C_DEV_SYSFS_H + +#include <linux/device.h> +#include <linux/types.h> + +typedef ssize_t (*i2c_dev_attr_show_fn)(struct device *dev, + struct device_attribute *attr, + char *buf); +typedef ssize_t (*i2c_dev_attr_store_fn)(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + +#define I2C_DEV_ATTR_SHOW_DEFAULT (i2c_dev_attr_show_fn)(1) +#define I2C_DEV_ATTR_STORE_DEFAULT (i2c_dev_attr_store_fn)(1) + +typedef struct i2c_dev_attr_st_ { + const char *ida_name; + const char *ida_help; + i2c_dev_attr_show_fn ida_show; + i2c_dev_attr_store_fn ida_store; + int ida_reg; + int ida_bit_offset; + int ida_n_bits; +} i2c_dev_attr_st; + +typedef struct i2c_sysfs_attr_st_{ + struct device_attribute isa_dev_attr; + const i2c_dev_attr_st *isa_i2c_attr; +} i2c_sysfs_attr_st; + +#define TO_I2C_SYSFS_ATTR(_attr) \ + container_of(_attr, i2c_sysfs_attr_st, isa_dev_attr) + +typedef struct i2c_dev_data_st_ { + struct device *idd_hwmon_dev; + struct mutex idd_lock; + i2c_sysfs_attr_st *idd_attrs; + struct attribute_group idd_attr_group; +} i2c_dev_data_st; + +int i2c_dev_sysfs_data_init(struct i2c_client *client, + i2c_dev_data_st *data, + const i2c_dev_attr_st *dev_attrs, + int n_attrs); +void i2c_dev_sysfs_data_clean(struct i2c_client *client, i2c_dev_data_st *data); +int i2c_dev_read_byte(struct device *dev, + struct device_attribute *attr); +int i2c_dev_read_nbytes(struct device *dev, + struct device_attribute *attr, + uint8_t values[], + int nbytes); +int i2c_dev_read_word_littleendian(struct device *dev, + struct device_attribute *attr); +int i2c_dev_read_word_bigendian(struct device *dev, + struct device_attribute *attr); +ssize_t i2c_dev_show_label(struct device *dev, + struct device_attribute *attr, + char *buf); +ssize_t i2c_dev_show_ascii(struct device *dev, + struct device_attribute *attr, + char *buf); + +#endif diff --git a/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/kernel-module-i2c-dev-sysfs_0.1.bb b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/kernel-module-i2c-dev-sysfs_0.1.bb new file mode 100644 index 0000000..526ef57 --- /dev/null +++ b/meta-raptor/meta-asus/recipes-kernel/i2c-dev-sysfs-mod/kernel-module-i2c-dev-sysfs_0.1.bb @@ -0,0 +1,42 @@ +# Copyright 2016-present Raptor Engineering. All Rights Reserved. +# +# This program file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +# for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program in a file named COPYING; if not, write to the +# Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, +# Boston, MA 02110-1301 USA + +SUMMARY = "ASUS i2c device library" +DESCRIPTION = "i2c device sysfs attribute library" +LICENSE = "GPLv2" +LIC_FILES_CHKSUM = "file://COPYING;md5=12f884d2ae1ff87c09e5b7ccc2c4ca7e" + +inherit module + +PR = "r0" +PV = "0.1" + +SRC_URI = "file://Makefile \ + file://i2c_dev_sysfs.c \ + file://i2c_dev_sysfs.h \ + file://COPYING \ + " + +S = "${WORKDIR}" + +do_install_append() { + kerneldir=${STAGING_KERNEL_DIR}/include/linux + install -d ${kerneldir} + install -m 0644 i2c_dev_sysfs.h ${kerneldir}/ +} + +FILES_${PN}-dev = "${kerneldir}/i2c_dev_sysfs.h" |
