| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178 |
- From 31bc84d45320dad2392384381ad4d818ab21087a Mon Sep 17 00:00:00 2001
- From: "Philip A. Prindeville" <philipp@redfish-solutions.com>
- Date: Wed, 18 Jan 2012 11:15:33 -0700
- Subject: [PATCH 1/1] geos: Platform driver for Geos and Geos2 single-board
- computers.
- Trivial platform driver for Traverse Technologies Geos and Geos2
- single-board computers. Uses SMBIOS to identify platform.
- Based on progressive revisions of the leds-net5501 driver that
- was rewritten by Ed Wildgoose as a platform driver.
- Supports GPIO-based LEDs (3) and 1 polled button which is
- typically used for a soft reset.
- Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
- Reviewed-by: Ed Wildgoose <ed@wildgooses.com>
- Acked-by: Andres Salomon <dilinger@queued.net>
- Cc: Richard Purdie <rpurdie@rpsys.net>
- Cc: Andrew Morton <akpm@linux-foundation.org>
- ---
- arch/x86/Kconfig | 7 ++
- arch/x86/platform/geode/Makefile | 1 +
- arch/x86/platform/geode/geos.c | 128 ++++++++++++++++++++++++++++++++++++++
- 3 files changed, 136 insertions(+), 0 deletions(-)
- create mode 100644 arch/x86/platform/geode/geos.c
- --- a/arch/x86/Kconfig
- +++ b/arch/x86/Kconfig
- @@ -2133,6 +2133,13 @@ config ALIX
-
- Note: You have to set alix.force=1 for boards with Award BIOS.
-
- +config GEOS
- + bool "Traverse Technologies GEOS System Support (LEDS, GPIO, etc)"
- + select GPIOLIB
- + depends on DMI
- + ---help---
- + This option enables system support for the Traverse Technologies GEOS.
- +
- endif # X86_32
-
- config AMD_NB
- --- a/arch/x86/platform/geode/Makefile
- +++ b/arch/x86/platform/geode/Makefile
- @@ -1 +1,2 @@
- obj-$(CONFIG_ALIX) += alix.o
- +obj-$(CONFIG_GEOS) += geos.o
- --- /dev/null
- +++ b/arch/x86/platform/geode/geos.c
- @@ -0,0 +1,128 @@
- +/*
- + * System Specific setup for Traverse Technologies GEOS.
- + * At the moment this means setup of GPIO control of LEDs.
- + *
- + * Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
- + * Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
- + * and Philip Prindeville <philipp@redfish-solutions.com>
- + *
- + * TODO: There are large similarities with leds-net5501.c
- + * by Alessandro Zummo <a.zummo@towertech.it>
- + * In the future leds-net5501.c should be migrated over to platform
- + *
- + * This program is free software; you can redistribute it and/or modify
- + * it under the terms of the GNU General Public License version 2
- + * as published by the Free Software Foundation.
- + */
- +
- +#include <linux/kernel.h>
- +#include <linux/init.h>
- +#include <linux/io.h>
- +#include <linux/string.h>
- +#include <linux/module.h>
- +#include <linux/leds.h>
- +#include <linux/platform_device.h>
- +#include <linux/gpio.h>
- +#include <linux/input.h>
- +#include <linux/gpio_keys.h>
- +#include <linux/dmi.h>
- +
- +#include <asm/geode.h>
- +
- +static struct gpio_keys_button geos_gpio_buttons[] = {
- + {
- + .code = KEY_RESTART,
- + .gpio = 3,
- + .active_low = 1,
- + .desc = "Reset button",
- + .type = EV_KEY,
- + .wakeup = 0,
- + .debounce_interval = 100,
- + .can_disable = 0,
- + }
- +};
- +static struct gpio_keys_platform_data geos_buttons_data = {
- + .buttons = geos_gpio_buttons,
- + .nbuttons = ARRAY_SIZE(geos_gpio_buttons),
- + .poll_interval = 20,
- +};
- +
- +static struct platform_device geos_buttons_dev = {
- + .name = "gpio-keys-polled",
- + .id = 1,
- + .dev = {
- + .platform_data = &geos_buttons_data,
- + }
- +};
- +
- +static struct gpio_led geos_leds[] = {
- + {
- + .name = "geos:1",
- + .gpio = 6,
- + .default_trigger = "default-on",
- + .active_low = 1,
- + },
- + {
- + .name = "geos:2",
- + .gpio = 25,
- + .default_trigger = "default-off",
- + .active_low = 1,
- + },
- + {
- + .name = "geos:3",
- + .gpio = 27,
- + .default_trigger = "default-off",
- + .active_low = 1,
- + },
- +};
- +
- +static struct gpio_led_platform_data geos_leds_data = {
- + .num_leds = ARRAY_SIZE(geos_leds),
- + .leds = geos_leds,
- +};
- +
- +static struct platform_device geos_leds_dev = {
- + .name = "leds-gpio",
- + .id = -1,
- + .dev.platform_data = &geos_leds_data,
- +};
- +
- +static struct __initdata platform_device *geos_devs[] = {
- + &geos_buttons_dev,
- + &geos_leds_dev,
- +};
- +
- +static void __init register_geos(void)
- +{
- + /* Setup LED control through leds-gpio driver */
- + platform_add_devices(geos_devs, ARRAY_SIZE(geos_devs));
- +}
- +
- +static int __init geos_init(void)
- +{
- + const char *vendor, *product;
- +
- + if (!is_geode())
- + return 0;
- +
- + vendor = dmi_get_system_info(DMI_SYS_VENDOR);
- + if (!vendor || strcmp(vendor, "Traverse Technologies"))
- + return 0;
- +
- + product = dmi_get_system_info(DMI_PRODUCT_NAME);
- + if (!product || strcmp(product, "Geos"))
- + return 0;
- +
- + printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
- + KBUILD_MODNAME, vendor, product);
- +
- + register_geos();
- +
- + return 0;
- +}
- +
- +module_init(geos_init);
- +
- +MODULE_AUTHOR("Philip Prindeville <philipp@redfish-solutions.com>");
- +MODULE_DESCRIPTION("Traverse Technologies Geos System Setup");
- +MODULE_LICENSE("GPL");
|
