diff options
| -rw-r--r-- | AUTHORS | 2 | ||||
| -rw-r--r-- | COPYING | 340 | ||||
| -rw-r--r-- | ChangeLog | 1 | ||||
| -rw-r--r-- | Makefile | 5 | ||||
| -rw-r--r-- | NEWS | 0 | ||||
| -rw-r--r-- | README | 16 | ||||
| -rw-r--r-- | mtac_pulse.c | 302 |
7 files changed, 666 insertions, 0 deletions
@@ -0,0 +1,2 @@ +Gary Cole <garycole@connecteddev.com> +John Klug <john.klug@multitech.com> @@ -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. 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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".) 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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., 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. + + <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/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..db8866e --- /dev/null +++ b/Makefile @@ -0,0 +1,5 @@ +obj-m := mtac_pulse.o + +clean: + rm -f *.ko *.o + @@ -0,0 +1,16 @@ +This kernel module creates the +/sys/devices/platform/mts-io enumeration +of the features for MTAC PULSE 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-pulse-usage/ + +An init script can look in: +/lib/modules/$(uname -r)/extra/mtac_xdot.ko + +to find the driver. diff --git a/mtac_pulse.c b/mtac_pulse.c new file mode 100644 index 0000000..547cd02 --- /dev/null +++ b/mtac_pulse.c @@ -0,0 +1,302 @@ +#define DRIVER_VERSION "v1.0.0" +#define DRIVER_AUTHOR "John Klug <john.klug@multitech.com>" +#define DRIVER_DESC "MTAC Pulse Accessory Card" +#define DRIVER_NAME "mtac-pulse" + +#include <linux/types.h> +#include <linux/gpio.h> +#include <linux/platform_device.h> +#include <linux/kmod.h> +#include <linux/bitops.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/mtac.h> +#include <linux/mts_io.h> + +/********************************************************************** + * COPYRIGHT 2012-2018 CONNECTED DEVELOPMENT, LLC + * + * ALL RIGHTS RESERVED BY AND FOR THE EXCLUSIVE BENEFIT OF + * CONNECTED DEVELOPMENT, LLC. + * + * CONNECTED DEVELOPMENT, LLC - CONFIDENTIAL AND PROPRIETARY + * INFORMATION AND/OR TRADE SECRET. + * + * NOTICE: ALL CODE, PROGRAM, INFORMATION, SCRIPT, INSTRUCTION, + * DATA, AND COMMENT HEREIN IS AND SHALL REMAIN THE CONFIDENTIAL + * INFORMATION AND PROPERTY OF CONNECTED DEVELOPMENT, LLC. + * USE AND DISCLOSURE THEREOF, EXCEPT AS STRICTLY AUTHORIZED IN A + * WRITTEN AGREEMENT SIGNED BY CONNECTED DEVELOPMENT, LLC IS PROHIBITED. + * + ***********************************************************************/ + +static struct gpio_pin gpio_pins_mtcdt_mtac_pulse[] = { + // gpio pins for Accessory Card 1 + { + .name = "AP1_RESET", + .pin = { + .gpio = AT91_PIN_PB12, + .flags = GPIOF_OUT_INIT_HIGH, + .label = "ap1-reset", + } + }, + { + .name = "AP1_GPIO1", + .pin = { + .gpio = AT91_PIN_PC6, + .flags = GPIOF_OUT_INIT_LOW, + .label = "ap1-gpio1", + }, + .active_low = 1, + }, + // gpio pins for Accessory Card 2 + { + .name = "AP2_RESET", + .pin = { + .gpio = AT91_PIN_PB13, + .flags = GPIOF_OUT_INIT_HIGH, + .label = "ap2-reset", + } + }, + { + .name = "AP2_GPIO1", + .pin = { + .gpio = AT91_PIN_PC20, + .flags = GPIOF_OUT_INIT_LOW, + .label = "ap2-gpio1", + }, + .active_low = 1, + } +}; + +static char* pulse_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, "auto-boot")) { + return "ap1-gpio1"; + } else { + log_error("attirbute name [%s] is invalid for pulse in port %d", + name, port); + return ""; + } + + case port_2: + if (!strcmp(name, "reset")) { + return "ap2-reset"; + } else if (!strcmp(name, "auto-boot")) { + return "ap2-gpio1"; + } else { + log_error("attirbute name [%s] is invalid for pulse in port %d", + name, port); + return ""; + } + } + /* NOTREACHED */ + return ""; +} + +// 1 reset +// 1 auto-boot +// 1 vendor-id +// 1 product-id +// 1 device-id +// 1 hw-version +// NULL +static size_t ap_pulse_attrs_size = 7; + +static bool pulse_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 res; + struct kobject *subdir; + + log_info("loading pulse accessory card in port %d", port); + + 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; + } + + mtac_set_port_pins(port_index,gpio_pins_mtcdt_mtac_pulse,subdir); + + // create the link to the apX directory this card is in + // if we're in the first slot, we get plain "pulse" + // if we're in a different slot, we might need to use "pulse-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_PULSE)) { + count++; + } + } + } + } + if (count > 0) { + sprintf(buf, "pulse-%d", count + 1); + } else { + sprintf(buf, "pulse"); + } + ret = sysfs_create_link(mtac_port_info[port_index]->subdirs->parent, + mtac_port_info[port_index]->subdirs, buf); + if (ret) { + log_error("failed to link [%s] to [%s], %d", buf, + mtac_port_info[port_index]->subdirs->name, ret); + } else { + log_info("created link [%s] to [%s], success:%d", buf, + mtac_port_info[port_index]->subdirs->name, ret); + } + + attrs = kzalloc(sizeof(struct attribute *) * ap_pulse_attrs_size, + GFP_KERNEL); + if (!attrs) { + log_error("failed to allocate attribute space for port %d", port); + return false; + } + + sprintf(buf, "reset"); + attr = mtac_create_attribute(buf, MTS_ATTR_MODE_RW); + if (!attr) { + log_error("failed to create attribute [%s] for pulse 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; + + sprintf(buf, "auto-boot"); + attr = mtac_create_attribute(buf, MTS_ATTR_MODE_RW); + if (!attr) { + log_error("failed to create attribute [%s] for pulse 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; + + // add attributes for eeprom contents + if (! mtac_add_product_info_attributes(port, attrs, &index)) { + log_error("failed to add product info attributes for pulse in port %d", + port); + return false; + } + + attrs[index] = NULL; + + mtac_port_info[port_index]->attr_group.attrs = attrs; + if (sysfs_create_group(mtac_port_info[port_index]->subdirs, + &mtac_port_info[port_index]->attr_group)) { + log_error("sysfs_create_group failed for pulse in port %d", port); + return false; + } + + /* override ap_reset output mode to open drain */ + if (port == 1) { + res = gpio_request_one(AT91_PIN_PB12, GPIOF_OUT_INIT_HIGH | GPIOF_OPEN_DRAIN, "ap1-reset"); + } else { + res = gpio_request_one(AT91_PIN_PB13, GPIOF_OUT_INIT_HIGH | GPIOF_OPEN_DRAIN, "ap2-reset"); + } + if (res != 0) + { + log_error("failed to change ap%d_reset to open drain output", port); + } + + return true; +} + +static bool pulse_teardown(enum ap port) { + int i; + int port_index = port - 1; + struct attribute **attrs = mtac_port_info[port_index]->attr_group.attrs; + + log_info("unloading pulse accessory card in port %d", port); + + if (attrs) { + // clean up allocated memory for attributes + for (i = 0; i < ap_pulse_attrs_size; i++) { + if (attrs[i]) { + if (attrs[i]->name) + kfree(attrs[i]->name); + + kfree(attrs[i]); + } + } + + kfree(attrs); + } + // clean up our "apX/" kobject if it exists + 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_pulse_info(struct ap_info *info) { + snprintf(info->product_id, 32, "%s", PRODUCT_ID_MTAC_PULSE); + info->setup = &pulse_setup; + info->teardown = &pulse_teardown; + info->gpio_pin_name_by_attr_name = &pulse_gpio_pin_name_by_attr_name; +} + +/* + * Loop through all the slots, and set up the + * mtac-xdot driver for all slots. + */ +static int __init mtac_pulse_init(void) +{ + int slot_count = 0; + + slot_count = mtac_find(set_pulse_info,PRODUCT_ID_MTAC_PULSE); + + if (slot_count < 1) { + log_debug("No MTAC PULSE 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_pulse_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_XDOT)) { + if (mtac_port_info[port_index]->setup == &pulse_setup) { + mtac_port_info[port_index]->teardown(port_index+1); + kfree(mtac_port_info[port_index]); + } + } + } + log_info("exiting"); +} + +module_init(mtac_pulse_init); +module_exit(mtac_pulse_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); |