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platform/x86: add meraki-mx100 platform driver
This adds platform support for the Cisco Meraki MX100 (Tinkerbell)
network appliance. This sets up the network LEDs and Reset
button.
Depends-on: ef0eea5b15 ("mfd: lpc_ich: Enable GPIO driver for DH89xxCC")
Co-developed-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210810004021.2538308-1-chrisrblake93@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Chris Blake
Hans de Goede
parent
f6413ba357
commit
636a1e6975
@ -302,6 +302,19 @@ config ASUS_NB_WMI
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If you have an ACPI-WMI compatible Asus Notebook, say Y or M
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here.
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config MERAKI_MX100
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tristate "Cisco Meraki MX100 Platform Driver"
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depends on GPIOLIB
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depends on GPIO_ICH
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depends on LEDS_CLASS
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select LEDS_GPIO
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help
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This driver provides support for the front button and LEDs on
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the Cisco Meraki MX100 (Tinkerbell) 1U appliance.
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To compile this driver as a module, choose M here: the module
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will be called meraki-mx100.
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config EEEPC_LAPTOP
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tristate "Eee PC Hotkey Driver"
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depends on ACPI
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@ -39,6 +39,9 @@ obj-$(CONFIG_ASUS_NB_WMI) += asus-nb-wmi.o
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obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
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obj-$(CONFIG_EEEPC_WMI) += eeepc-wmi.o
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# Cisco/Meraki
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obj-$(CONFIG_MERAKI_MX100) += meraki-mx100.o
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# Dell
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obj-$(CONFIG_X86_PLATFORM_DRIVERS_DELL) += dell/
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230
drivers/platform/x86/meraki-mx100.c
Normal file
230
drivers/platform/x86/meraki-mx100.c
Normal file
@ -0,0 +1,230 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Cisco Meraki MX100 (Tinkerbell) board platform driver
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*
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* Based off of arch/x86/platform/meraki/tink.c from the
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* Meraki GPL release meraki-firmware-sources-r23-20150601
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*
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* Format inspired by platform/x86/pcengines-apuv2.c
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*
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* Copyright (C) 2021 Chris Blake <chrisrblake93@gmail.com>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/dmi.h>
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#include <linux/err.h>
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#include <linux/gpio_keys.h>
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#include <linux/gpio/machine.h>
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#include <linux/input.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/leds.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#define TINK_GPIO_DRIVER_NAME "gpio_ich"
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/* LEDs */
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static const struct gpio_led tink_leds[] = {
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{
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.name = "mx100:green:internet",
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.default_trigger = "default-on",
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},
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{
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.name = "mx100:green:lan2",
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},
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{
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.name = "mx100:green:lan3",
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},
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{
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.name = "mx100:green:lan4",
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},
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{
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.name = "mx100:green:lan5",
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},
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{
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.name = "mx100:green:lan6",
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},
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{
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.name = "mx100:green:lan7",
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},
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{
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.name = "mx100:green:lan8",
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},
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{
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.name = "mx100:green:lan9",
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},
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{
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.name = "mx100:green:lan10",
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},
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{
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.name = "mx100:green:lan11",
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},
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{
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.name = "mx100:green:ha",
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},
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{
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.name = "mx100:orange:ha",
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},
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{
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.name = "mx100:green:usb",
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},
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{
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.name = "mx100:orange:usb",
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},
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};
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static const struct gpio_led_platform_data tink_leds_pdata = {
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.num_leds = ARRAY_SIZE(tink_leds),
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.leds = tink_leds,
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};
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static struct gpiod_lookup_table tink_leds_table = {
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.dev_id = "leds-gpio",
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.table = {
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 11,
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NULL, 0, GPIO_ACTIVE_LOW),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 18,
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NULL, 1, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 20,
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NULL, 2, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 22,
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NULL, 3, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 23,
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NULL, 4, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 32,
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NULL, 5, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 34,
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NULL, 6, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 35,
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NULL, 7, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 36,
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NULL, 8, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 37,
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NULL, 9, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 48,
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NULL, 10, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 16,
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NULL, 11, GPIO_ACTIVE_LOW),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 7,
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NULL, 12, GPIO_ACTIVE_LOW),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 21,
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NULL, 13, GPIO_ACTIVE_LOW),
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 19,
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NULL, 14, GPIO_ACTIVE_LOW),
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{} /* Terminating entry */
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}
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};
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/* Reset Button */
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static struct gpio_keys_button tink_buttons[] = {
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{
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.desc = "Reset",
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.type = EV_KEY,
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.code = KEY_RESTART,
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.active_low = 1,
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.debounce_interval = 100,
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},
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};
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static const struct gpio_keys_platform_data tink_buttons_pdata = {
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.buttons = tink_buttons,
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.nbuttons = ARRAY_SIZE(tink_buttons),
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.poll_interval = 20,
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.rep = 0,
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.name = "mx100-keys",
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};
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static struct gpiod_lookup_table tink_keys_table = {
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.dev_id = "gpio-keys-polled",
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.table = {
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GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 60,
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NULL, 0, GPIO_ACTIVE_LOW),
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{} /* Terminating entry */
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}
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};
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/* Board setup */
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static const struct dmi_system_id tink_systems[] __initconst = {
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{
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.matches = {
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DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Cisco"),
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DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MX100-HW"),
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},
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},
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(dmi, tink_systems);
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static struct platform_device *tink_leds_pdev;
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static struct platform_device *tink_keys_pdev;
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static struct platform_device * __init tink_create_dev(
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const char *name, const void *pdata, size_t sz)
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{
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struct platform_device *pdev;
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pdev = platform_device_register_data(NULL,
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name, PLATFORM_DEVID_NONE, pdata, sz);
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if (IS_ERR(pdev))
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pr_err("failed registering %s: %ld\n", name, PTR_ERR(pdev));
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return pdev;
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}
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static int __init tink_board_init(void)
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{
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int ret;
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if (!dmi_first_match(tink_systems))
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return -ENODEV;
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/*
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* We need to make sure that GPIO60 isn't set to native mode as is default since it's our
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* Reset Button. To do this, write to GPIO_USE_SEL2 to have GPIO60 set to GPIO mode.
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* This is documented on page 1609 of the PCH datasheet, order number 327879-005US
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*/
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outl(inl(0x530) | BIT(28), 0x530);
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gpiod_add_lookup_table(&tink_leds_table);
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gpiod_add_lookup_table(&tink_keys_table);
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tink_leds_pdev = tink_create_dev("leds-gpio",
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&tink_leds_pdata, sizeof(tink_leds_pdata));
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if (IS_ERR(tink_leds_pdev)) {
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ret = PTR_ERR(tink_leds_pdev);
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goto err;
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}
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tink_keys_pdev = tink_create_dev("gpio-keys-polled",
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&tink_buttons_pdata, sizeof(tink_buttons_pdata));
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if (IS_ERR(tink_keys_pdev)) {
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ret = PTR_ERR(tink_keys_pdev);
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platform_device_unregister(tink_leds_pdev);
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goto err;
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}
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return 0;
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err:
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gpiod_remove_lookup_table(&tink_keys_table);
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gpiod_remove_lookup_table(&tink_leds_table);
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return ret;
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}
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module_init(tink_board_init);
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static void __exit tink_board_exit(void)
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{
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platform_device_unregister(tink_keys_pdev);
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platform_device_unregister(tink_leds_pdev);
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gpiod_remove_lookup_table(&tink_keys_table);
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gpiod_remove_lookup_table(&tink_leds_table);
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}
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module_exit(tink_board_exit);
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MODULE_AUTHOR("Chris Blake <chrisrblake93@gmail.com>");
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MODULE_DESCRIPTION("Cisco Meraki MX100 Platform Driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:meraki-mx100");
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