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openwrt/target/linux/x86/patches-5.10/102-v5.15-platform-x86-add-meraki-mx100-platform-driver.patch
Rui Salvaterra 3bd701d47c kernel: bump 5.10 to 5.10.73 
Patches automatically refreshed.

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
2021-10-21 00:17:36 +02:00

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7.8 KiB
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From 636a1e697555e73c28cdd6952a409edbfdd16475 Mon Sep 17 00:00:00 2001
From: Chris Blake <chrisrblake93@gmail.com>
Date: Mon, 9 Aug 2021 19:40:21 -0500
Subject: 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: ef0eea5b151ae ("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>
---
drivers/platform/x86/Kconfig | 13 ++
drivers/platform/x86/Makefile | 3 +
drivers/platform/x86/meraki-mx100.c | 230 ++++++++++++++++++++++++++++++++++++
3 files changed, 246 insertions(+)
create mode 100644 drivers/platform/x86/meraki-mx100.c
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -267,6 +267,19 @@ config ASUS_NB_WMI
If you have an ACPI-WMI compatible Asus Notebook, say Y or M
here.
+config MERAKI_MX100
+ tristate "Cisco Meraki MX100 Platform Driver"
+ depends on GPIOLIB
+ depends on GPIO_ICH
+ depends on LEDS_CLASS
+ select LEDS_GPIO
+ help
+ This driver provides support for the front button and LEDs on
+ the Cisco Meraki MX100 (Tinkerbell) 1U appliance.
+
+ To compile this driver as a module, choose M here: the module
+ will be called meraki-mx100.
+
config EEEPC_LAPTOP
tristate "Eee PC Hotkey Driver"
depends on ACPI
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -33,6 +33,9 @@ obj-$(CONFIG_ASUS_NB_WMI) += asus-nb-wmi
obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
obj-$(CONFIG_EEEPC_WMI) += eeepc-wmi.o
+# Cisco/Meraki
+obj-$(CONFIG_MERAKI_MX100) += meraki-mx100.o
+
# Dell
obj-$(CONFIG_DCDBAS) += dcdbas.o
obj-$(CONFIG_DELL_SMBIOS) += dell-smbios.o
--- /dev/null
+++ b/drivers/platform/x86/meraki-mx100.c
@@ -0,0 +1,230 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Cisco Meraki MX100 (Tinkerbell) board platform driver
+ *
+ * Based off of arch/x86/platform/meraki/tink.c from the
+ * Meraki GPL release meraki-firmware-sources-r23-20150601
+ *
+ * Format inspired by platform/x86/pcengines-apuv2.c
+ *
+ * Copyright (C) 2021 Chris Blake <chrisrblake93@gmail.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/dmi.h>
+#include <linux/err.h>
+#include <linux/gpio_keys.h>
+#include <linux/gpio/machine.h>
+#include <linux/input.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#define TINK_GPIO_DRIVER_NAME "gpio_ich"
+
+/* LEDs */
+static const struct gpio_led tink_leds[] = {
+ {
+ .name = "mx100:green:internet",
+ .default_trigger = "default-on",
+ },
+ {
+ .name = "mx100:green:lan2",
+ },
+ {
+ .name = "mx100:green:lan3",
+ },
+ {
+ .name = "mx100:green:lan4",
+ },
+ {
+ .name = "mx100:green:lan5",
+ },
+ {
+ .name = "mx100:green:lan6",
+ },
+ {
+ .name = "mx100:green:lan7",
+ },
+ {
+ .name = "mx100:green:lan8",
+ },
+ {
+ .name = "mx100:green:lan9",
+ },
+ {
+ .name = "mx100:green:lan10",
+ },
+ {
+ .name = "mx100:green:lan11",
+ },
+ {
+ .name = "mx100:green:ha",
+ },
+ {
+ .name = "mx100:orange:ha",
+ },
+ {
+ .name = "mx100:green:usb",
+ },
+ {
+ .name = "mx100:orange:usb",
+ },
+};
+
+static const struct gpio_led_platform_data tink_leds_pdata = {
+ .num_leds = ARRAY_SIZE(tink_leds),
+ .leds = tink_leds,
+};
+
+static struct gpiod_lookup_table tink_leds_table = {
+ .dev_id = "leds-gpio",
+ .table = {
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 11,
+ NULL, 0, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 18,
+ NULL, 1, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 20,
+ NULL, 2, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 22,
+ NULL, 3, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 23,
+ NULL, 4, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 32,
+ NULL, 5, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 34,
+ NULL, 6, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 35,
+ NULL, 7, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 36,
+ NULL, 8, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 37,
+ NULL, 9, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 48,
+ NULL, 10, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 16,
+ NULL, 11, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 7,
+ NULL, 12, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 21,
+ NULL, 13, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 19,
+ NULL, 14, GPIO_ACTIVE_LOW),
+ {} /* Terminating entry */
+ }
+};
+
+/* Reset Button */
+static struct gpio_keys_button tink_buttons[] = {
+ {
+ .desc = "Reset",
+ .type = EV_KEY,
+ .code = KEY_RESTART,
+ .active_low = 1,
+ .debounce_interval = 100,
+ },
+};
+
+static const struct gpio_keys_platform_data tink_buttons_pdata = {
+ .buttons = tink_buttons,
+ .nbuttons = ARRAY_SIZE(tink_buttons),
+ .poll_interval = 20,
+ .rep = 0,
+ .name = "mx100-keys",
+};
+
+static struct gpiod_lookup_table tink_keys_table = {
+ .dev_id = "gpio-keys-polled",
+ .table = {
+ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 60,
+ NULL, 0, GPIO_ACTIVE_LOW),
+ {} /* Terminating entry */
+ }
+};
+
+/* Board setup */
+static const struct dmi_system_id tink_systems[] __initconst = {
+ {
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Cisco"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MX100-HW"),
+ },
+ },
+ {} /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(dmi, tink_systems);
+
+static struct platform_device *tink_leds_pdev;
+static struct platform_device *tink_keys_pdev;
+
+static struct platform_device * __init tink_create_dev(
+ const char *name, const void *pdata, size_t sz)
+{
+ struct platform_device *pdev;
+
+ pdev = platform_device_register_data(NULL,
+ name, PLATFORM_DEVID_NONE, pdata, sz);
+ if (IS_ERR(pdev))
+ pr_err("failed registering %s: %ld\n", name, PTR_ERR(pdev));
+
+ return pdev;
+}
+
+static int __init tink_board_init(void)
+{
+ int ret;
+
+ if (!dmi_first_match(tink_systems))
+ return -ENODEV;
+
+ /*
+ * We need to make sure that GPIO60 isn't set to native mode as is default since it's our
+ * Reset Button. To do this, write to GPIO_USE_SEL2 to have GPIO60 set to GPIO mode.
+ * This is documented on page 1609 of the PCH datasheet, order number 327879-005US
+ */
+ outl(inl(0x530) | BIT(28), 0x530);
+
+ gpiod_add_lookup_table(&tink_leds_table);
+ gpiod_add_lookup_table(&tink_keys_table);
+
+ tink_leds_pdev = tink_create_dev("leds-gpio",
+ &tink_leds_pdata, sizeof(tink_leds_pdata));
+ if (IS_ERR(tink_leds_pdev)) {
+ ret = PTR_ERR(tink_leds_pdev);
+ goto err;
+ }
+
+ tink_keys_pdev = tink_create_dev("gpio-keys-polled",
+ &tink_buttons_pdata, sizeof(tink_buttons_pdata));
+ if (IS_ERR(tink_keys_pdev)) {
+ ret = PTR_ERR(tink_keys_pdev);
+ platform_device_unregister(tink_leds_pdev);
+ goto err;
+ }
+
+ return 0;
+
+err:
+ gpiod_remove_lookup_table(&tink_keys_table);
+ gpiod_remove_lookup_table(&tink_leds_table);
+ return ret;
+}
+module_init(tink_board_init);
+
+static void __exit tink_board_exit(void)
+{
+ platform_device_unregister(tink_keys_pdev);
+ platform_device_unregister(tink_leds_pdev);
+ gpiod_remove_lookup_table(&tink_keys_table);
+ gpiod_remove_lookup_table(&tink_leds_table);
+}
+module_exit(tink_board_exit);
+
+MODULE_AUTHOR("Chris Blake <chrisrblake93@gmail.com>");
+MODULE_DESCRIPTION("Cisco Meraki MX100 Platform Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:meraki-mx100");
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