292 lines
7.8 KiB
Diff
292 lines
7.8 KiB
Diff
From 636a1e697555e73c28cdd6952a409edbfdd16475 Mon Sep 17 00:00:00 2001
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From: Chris Blake <chrisrblake93@gmail.com>
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Date: Mon, 9 Aug 2021 19:40:21 -0500
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Subject: platform/x86: add meraki-mx100 platform driver
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This adds platform support for the Cisco Meraki MX100 (Tinkerbell)
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network appliance. This sets up the network LEDs and Reset
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button.
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Depends-on: ef0eea5b151ae ("mfd: lpc_ich: Enable GPIO driver for DH89xxCC")
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Co-developed-by: Christian Lamparter <chunkeey@gmail.com>
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Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
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Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
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Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
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Link: https://lore.kernel.org/r/20210810004021.2538308-1-chrisrblake93@gmail.com
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Reviewed-by: Hans de Goede <hdegoede@redhat.com>
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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drivers/platform/x86/Kconfig | 13 ++
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drivers/platform/x86/Makefile | 3 +
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drivers/platform/x86/meraki-mx100.c | 230 ++++++++++++++++++++++++++++++++++++
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3 files changed, 246 insertions(+)
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create mode 100644 drivers/platform/x86/meraki-mx100.c
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--- a/drivers/platform/x86/Kconfig
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+++ b/drivers/platform/x86/Kconfig
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@@ -267,6 +267,19 @@ 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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+
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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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+
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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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--- a/drivers/platform/x86/Makefile
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+++ b/drivers/platform/x86/Makefile
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@@ -33,6 +33,9 @@ obj-$(CONFIG_ASUS_NB_WMI) += asus-nb-wmi
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obj-$(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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+
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# Dell
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obj-$(CONFIG_DCDBAS) += dcdbas.o
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obj-$(CONFIG_DELL_SMBIOS) += dell-smbios.o
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--- /dev/null
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+++ b/drivers/platform/x86/meraki-mx100.c
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@@ -0,0 +1,230 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+
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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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+
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+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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+
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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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+
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+#define TINK_GPIO_DRIVER_NAME "gpio_ich"
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+ return pdev;
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+}
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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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+
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+ if (!dmi_first_match(tink_systems))
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+ return -ENODEV;
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+
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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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+
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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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+
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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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+
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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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+
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+ return 0;
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+
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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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+
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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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+
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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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