From d3ff82c06fe0fd40fcf0c72be4eae279a2580d9c Mon Sep 17 00:00:00 2001 From: John Klug Date: Mon, 15 Oct 2018 14:53:47 -0500 Subject: mtac LoRa derived from mts-io 2.2.2 --- AUTHORS | 3 + COPYING | 340 +++++++++++++++++++++++++++++++++++++++++++++++++ ChangeLog | 1 + Makefile | 5 + NEWS | 0 README | 16 +++ mtac_lora.c | 415 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 780 insertions(+) create mode 100644 AUTHORS create mode 100644 COPYING create mode 100644 ChangeLog create mode 100644 Makefile create mode 100644 NEWS create mode 100644 README create mode 100644 mtac_lora.c diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..930c551 --- /dev/null +++ b/AUTHORS @@ -0,0 +1,3 @@ +James Maki +John Klug + diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..d60c31a --- /dev/null +++ b/COPYING @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. + + + Copyright (C) + + 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. + + , 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/ChangeLog b/ChangeLog new file mode 100644 index 0000000..8b13789 --- /dev/null +++ b/ChangeLog @@ -0,0 +1 @@ + diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..d9e5d11 --- /dev/null +++ b/Makefile @@ -0,0 +1,5 @@ +obj-m := mtac_lora.o + +clean: + rm -f *.ko *.o + diff --git a/NEWS b/NEWS new file mode 100644 index 0000000..e69de29 diff --git a/README b/README new file mode 100644 index 0000000..f4c73b2 --- /dev/null +++ b/README @@ -0,0 +1,16 @@ +This kernel module creates the +/sys/devices/platform/mts-io enumeration +of the features for MTAC LoRa boards. + +This driver requires the mtac.ko driver +loaded first. depmod should take care +of this. + +Documentation for this board is here: + +http://www.multitech.net/developer/software/mlinux/using-mlinux/mlinux-using-accessory-cards/mtac-eth-usage/ + +An init script can look in: +/lib/modules/$(uname -r)/extra/mtac_lora.ko + +to find the driver. diff --git a/mtac_lora.c b/mtac_lora.c new file mode 100644 index 0000000..7283d7e --- /dev/null +++ b/mtac_lora.c @@ -0,0 +1,415 @@ +#define DRIVER_VERSION "v1.0.0" +#define DRIVER_AUTHOR "John Klug " +#define DRIVER_DESC "MTS Multi-Fuction Serial Accessory Card" +#define DRIVER_NAME "mtac-lora" + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static struct gpio_pin gpio_pins_mtcdt_mtac_lora_0_0[] = { + // gpio pins for Accessory Card 1 + { + .name = "AP1_RESET", + .pin = { + .gpio = AT91_PIN_PB12, + .flags = GPIOF_OUT_INIT_HIGH, + .label = "ap1-reset", + } + }, + + // gpio pins for Accessory Card 2 + { + .name = "AP2_RESET", + .pin = { + .gpio = AT91_PIN_PB13, + .flags = GPIOF_OUT_INIT_HIGH, + .label = "ap2-reset", + } + }, + { }, +}; + +static struct gpio_pin gpio_pins_mtcdt_mtac_lora_1_5[] = { + // gpio pins for Accessory Card 1 + { + .name = "AP1_RESET", + .pin = { + .gpio = AT91_PIN_PB12, + .flags = GPIOF_OUT_INIT_HIGH, + .label = "ap1-reset", + } + }, + { + .name = "AP1_CDONE", + .pin = { + .gpio = AT91_PIN_PC6, + .flags = GPIOF_IN, + .label = "ap1-cdone", + }, + .active_low = 1, + }, + { + .name = "AP1_CRESET", + .pin = { + .gpio = AT91_PIN_PC7, + .flags = GPIOF_OUT_INIT_HIGH, + .label = "ap1-creset", + } + }, + + // gpio pins for Accessory Card 2 + { + .name = "AP2_RESET", + .pin = { + .gpio = AT91_PIN_PB13, + .flags = GPIOF_OUT_INIT_HIGH, + .label = "ap2-reset", + } + }, + { + .name = "AP2_CDONE", + .pin = { + .gpio = AT91_PIN_PC20, + .flags = GPIOF_OUT_INIT_LOW, + .label = "ap2-cdone", + }, + .active_low = 1, + }, + { + .name = "AP2_CRESET", + .pin = { + .gpio = AT91_PIN_PC21, + .flags = GPIOF_OUT_INIT_LOW, + .label = "ap2-creset", + } + }, + { }, +}; + +ssize_t lora_show_eui(struct kobject *kobj, struct kobj_attribute *attr, char *buf) +{ + int retval = -1; + int port; + int port_index; + struct mts_ap_eeprom_layout *app; + + + port = mtac_port_from_kobject(kobj); + if (port < 1) { + log_error("mtac_port_from_kobject returned %d", port); + return -1; + } + port_index = port - 1; + + app = (struct mts_ap_eeprom_layout *)mts_ap_eeprom[port_index]; + if (! strcmp(attr->attr.name, "eui")) { + retval = sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", + app->eui[0], + app->eui[1], + app->eui[2], + app->eui[3], + app->eui[4], + app->eui[5], + app->eui[6], + app->eui[7]); + } + return retval; +} + + +static char* lora_gpio_pin_name_by_attr_name(const char* name, int port) { + switch (port) { + case port_1: + if (! strcmp(name, "reset")) { + return "ap1-reset"; + } else if (!strcmp(name,"cdone")) { + return "ap1-cdone"; + } else if (!strcmp(name,"creset")) { + return "ap1-creset"; + } else { + log_error("attribute name [%s] is invalid for LORA in port %d", name, port); + return ""; + } + + case port_2: + if (! strcmp(name, "reset")) { + return "ap2-reset"; + } else if (!strcmp(name,"cdone")) { + return "ap2-cdone"; + } else if (!strcmp(name,"creset")) { + return "ap2-creset"; + } else { + log_error("attribute name [%s] is invalid for LORA in port %d", name, port); + return ""; + } + } + /* NOTREACHED */ + return ""; +} + +// 1 cdone (optional) +// 1 creset (optional) +// 1 eui +// 1 reset +// 1 vendor-id +// 1 product-id +// 1 device-id +// 1 hw-version +// NULL + +#define ATTRS_SIZE_1_5 9 +#define ATTRS_SIZE_0_0 7 + +// Set the hardware version if the ROM string matches one of the valid +// hardware versions. +// Lengths of strings must be the same for a match, then can compare +// text. Without a length check a subset of a string could be a match. +#define COMPARE_AND_ASSIGN(CANDIDATE) ((hw_version_len == (sizeof(HW_VERSION_ ## CANDIDATE)-1)) && \ + (strncmp(ap_eeprom->hw_version, HW_VERSION_ ## CANDIDATE, sizeof(HW_VERSION_ ## CANDIDATE)) == 0)) \ + lora_hw_version = CANDIDATE; + +static bool lora_setup(enum ap port) { + int i; + int port_index = port - 1; + int index = 0; + int count = 0; + int ret; + char buf[32]; + struct kobj_attribute* attr; + struct attribute **attrs; + int lora_hw_version; + int hw_version_len; + int ap_lora_attrs_size; + struct mts_ap_eeprom_layout *ap_eeprom; + struct kobject *subdir; + + ap_eeprom = (struct mts_ap_eeprom_layout *)mts_ap_eeprom[port_index]; + + log_info("loading LORA accessory card in port %d hw: version %s", port, ap_eeprom->hw_version); + + sprintf(buf, "ap%d", port); + subdir = kobject_create_and_add(buf, &mts_io_platform_device->dev.kobj); + if (! subdir) { + log_error("kobject_create_and_add in port %d failed", port); + return false; + } + + // create the link to the apX directory this card is in + // if we're in the first slot, we get plain "lora" + // if we're in a different slot, we might need to use "lora-2" to differentiate + if (port > 1) { + for (i = 1; i < port; i++) { + if (mtac_port_info[i - 1]) { + if (strstr(mtac_port_info[i - 1]->product_id, PRODUCT_ID_MTAC_LORA)) { + count++; + } + } + } + } + if (count > 0) { + sprintf(buf, "lora-%d", count + 1); + } else { + sprintf(buf, "lora"); + } + ret = sysfs_create_link(subdir->parent, subdir, buf); + if (ret) { + log_error("failed to link [%s] to [%s], %d", buf, subdir->name, ret); + } else + log_info("created link [%s] to [%s], success:%d", buf, subdir->name, ret); + + + // hw_version string length, null character not counted. + hw_version_len = strnlen(ap_eeprom->hw_version,sizeof ap_eeprom->hw_version); + + /* Set LoRa hardware version. */ + if COMPARE_AND_ASSIGN(MTAC_LORA_0_0) + else if COMPARE_AND_ASSIGN(MTAC_LORA_1_0) + else if COMPARE_AND_ASSIGN(MTAC_LORA_1_5) + else { + log_error("Unknown hw-version in port %d", port); + return false; + } + + if ((lora_hw_version == MTAC_LORA_0_0) || (lora_hw_version == MTAC_LORA_1_0)) { + ap_lora_attrs_size = ATTRS_SIZE_0_0; + mtac_set_port_pins(port_index,gpio_pins_mtcdt_mtac_lora_0_0,subdir); + } else { + ap_lora_attrs_size = ATTRS_SIZE_1_5; + mtac_set_port_pins(port_index,gpio_pins_mtcdt_mtac_lora_1_5,subdir); + } + + + attrs = kzalloc(sizeof(struct attribute*) * ap_lora_attrs_size, GFP_KERNEL); + if (! attrs) { + log_error("failed to allocate attribute space for port %d", port); + return false; + } + log_debug("Allocated %d attrs @ %p",ap_lora_attrs_size,attrs); + + + sprintf(buf, "reset"); + attr = mtac_create_attribute(buf, MTS_ATTR_MODE_RW); + if (! attr) { + log_error("failed to create attribute [%s] for LORA in port %d", buf, port); + kfree(attrs); + return false; + } + attr->show = mtac_attr_show_ap_gpio_pin; + attr->store = mtac_attr_store_ap_gpio_pin; + attrs[index++] = &attr->attr; + + if (lora_hw_version == MTAC_LORA_1_5) { + //GPIO1 - cdone on FPGA - input to CPU + sprintf(buf, "cdone"); + attr = mtac_create_attribute(buf, MTS_ATTR_MODE_RO); + if (! attr) { + log_error("failed to create attribute [%s] for LORA in port %d", buf, port); + attrs[index] = NULL; + mtac_port_info[port_index]->attr_group.attrs = attrs; + return false; + } + attr->show = mtac_attr_show_ap_gpio_pin; + attrs[index++] = &attr->attr; + + //GPIO2 reset on FPGA - output from CPU + sprintf(buf, "creset"); + attr = mtac_create_attribute(buf, MTS_ATTR_MODE_RW); + if (! attr) { + log_error("failed to create attribute [%s] for LORA in port %d", buf, port); + attrs[index] = NULL; + mtac_port_info[port_index]->attr_group.attrs = attrs; + return false; + } + attr->show = mtac_attr_show_ap_gpio_pin; + attr->store = mtac_attr_store_ap_gpio_pin; + attrs[index++] = &attr->attr; + if(index >= ap_lora_attrs_size) { + panic("Internal error, too many attributes on the LORA card index %d >= %d", + index,ap_lora_attrs_size); + } + } + + sprintf(buf,"eui"); + attr = mtac_create_attribute("eui", MTS_ATTR_MODE_RO); + if (! attr) { + log_error("failed to create attribute [%s] for LORA in port %d", buf, port); + attrs[index] = NULL; + mtac_port_info[port_index]->attr_group.attrs = attrs; + return false; + } + attr->show = lora_show_eui; + attrs[index++] = &attr->attr; + + + // add attributes for eeprom contents + ret = mtac_add_product_info_attributes(port, attrs, &index); + log_debug("Terminate addrs at index %d",index); + attrs[index] = NULL; // Terminate the array. + mtac_port_info[port_index]->attr_group.attrs = attrs; // attrs available for teardown. + + if (!ret) { + log_error("failed to add product info attributes for LORA in port %d", port); + return false; + } + log_debug("mtac_port_info[port_index=%d]->subdirs = %p mtac_port_info[port_index=%d]->attr_group=%p", + port_index,mtac_port_info[port_index]->subdirs,port_index,&mtac_port_info[port_index]->attr_group); + if (sysfs_create_group(mtac_port_info[port_index]->subdirs, &mtac_port_info[port_index]->attr_group)) { + log_error("sysfs_create_group failed for LORA in port %d", port); + return false; + } + + return true; +} + +static bool lora_teardown(enum ap port) { + int port_index = port - 1; + struct attribute **attrs = mtac_port_info[port_index]->attr_group.attrs; + struct attribute *p; + int i; + + log_info("unloading LORA accessory card in port %d", port); + + if(attrs) { + // clean up allocated memory for attributes + for(i=0;attrs[i];i++) { + p = attrs[i]; + if (p->name) + kfree(p->name); + kfree(p); + } + + log_info("kfree %p",attrs); + kfree(attrs); + } + // clean up our "apX/" kobject if it exists + log_info("free up directories"); + if (mtac_port_info[port_index]->subdirs) { + kobject_put(mtac_port_info[port_index]->subdirs); + } + + mtac_clear_port_pins(port_index); + + return true; +} + +void set_lora_info(struct ap_info* info) { + snprintf(info->product_id, 32, "%s", PRODUCT_ID_MTAC_LORA); + info->setup = &lora_setup; + info->teardown = &lora_teardown; + info->gpio_pin_name_by_attr_name = &lora_gpio_pin_name_by_attr_name; +} + +/* + * Loop through all the slots, and set up the + * mtac-lora driver for all slots. + */ +static int __init mtac_lora_init(void) +{ + int slot_count = 0; + + slot_count = mtac_find(set_lora_info,PRODUCT_ID_MTAC_LORA); + + if (slot_count < 1) { + log_debug("No MTAC LORA found"); + if (slot_count < 0) + return slot_count; + else + return -ENXIO; + + } + + return 0; +} + +/* We can only tear down our own device */ +static void __exit mtac_lora_exit(void) +{ + int port_index; + struct mts_ap_eeprom_layout *app; + + for (port_index = 0; port_index < NUM_AP; port_index++) { + app = (struct mts_ap_eeprom_layout *)mts_ap_eeprom[port_index]; + if (app && strstr(app->product_id, PRODUCT_ID_MTAC_LORA)) { + if (mtac_port_info[port_index]->setup == &lora_setup) { + mtac_port_info[port_index]->teardown(port_index+1); + kfree(mtac_port_info[port_index]); + } + } + } + log_info("exiting"); +} + +module_init(mtac_lora_init); +module_exit(mtac_lora_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); -- cgit v1.2.3