From 77a9b455375b15279928c57ae08a845e18a87bb4 Mon Sep 17 00:00:00 2001 From: John Klug Date: Mon, 15 Oct 2018 14:38:39 -0500 Subject: mtac pulse derived from mts-io 2.2.2 --- AUTHORS | 2 + COPYING | 340 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ChangeLog | 1 + Makefile | 5 + NEWS | 0 README | 16 +++ mtac_pulse.c | 302 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 666 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_pulse.c diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..38df722 --- /dev/null +++ b/AUTHORS @@ -0,0 +1,2 @@ +Gary Cole +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. 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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..db8866e --- /dev/null +++ b/Makefile @@ -0,0 +1,5 @@ +obj-m := mtac_pulse.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..fa298b0 --- /dev/null +++ b/README @@ -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 " +#define DRIVER_DESC "MTAC Pulse Accessory Card" +#define DRIVER_NAME "mtac-pulse" + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/********************************************************************** + * 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"); -- cgit v1.2.3