diff options
Diffstat (limited to 'io-module/mtac_pulse.c')
| -rw-r--r-- | io-module/mtac_pulse.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/io-module/mtac_pulse.c b/io-module/mtac_pulse.c new file mode 100644 index 0000000..dae4fa6 --- /dev/null +++ b/io-module/mtac_pulse.c @@ -0,0 +1,199 @@ +/********************************************************************** + * 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 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 ""; + } + } +} + +// 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; + + log_info("loading pulse accessory card in port %d", port); + + sprintf(buf, "ap%d", port); + ap_subdirs[port_index] = kobject_create_and_add(buf, + &mts_io_platform_device->dev.kobj); + if (!ap_subdirs[port_index]) { + 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 "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 (port_info[i - 1]) { + if (strstr(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(ap_subdirs[port_index]->parent, + ap_subdirs[port_index], buf); + if (ret) { + log_error("failed to link [%s] to [%s], %d", buf, + ap_subdirs[port_index]->name, ret); + } else { + log_info("created link [%s] to [%s], success:%d", buf, + ap_subdirs[port_index]->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 = 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 = mts_attr_show_ap_gpio_pin; + attr->store = mts_attr_store_ap_gpio_pin; + attrs[index++] = &attr->attr; + + sprintf(buf, "auto-boot"); + attr = 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 = mts_attr_show_ap_gpio_pin; + attr->store = mts_attr_store_ap_gpio_pin; + attrs[index++] = &attr->attr; + + // add attributes for eeprom contents + if (!ap_add_product_info_attributes(port, MTAC_PULSE_1_0, attrs, &index)) { + log_error("failed to add product info attributes for pulse in port %d", + port); + return false; + } + + attrs[index] = NULL; + + ap_attr_groups[port_index].attrs = attrs; + if (sysfs_create_group(ap_subdirs[port_index], + &ap_attr_groups[port_index])) { + log_error("sysfs_create_group failed for pulse in port %d", port); + return false; + } + + /* override ap_reset output mode to open drain */ + int res; + 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 = ap_attr_groups[port_index].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 (ap_subdirs[port_index]) { + kobject_put(ap_subdirs[port_index]); + } + + return true; +} + +bool 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; + + return true; +} + |