On Sat, 14 Jan 2012 01:45:39 -0700
Philip Prindeville <philipp@xxxxxxxxxxxxxxxxxxxxx> wrote:
> From: "Philip A. Prindeville" <philipp@xxxxxxxxxxxxxxxxxxxxx>
>
> 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@xxxxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Ed Wildgoose <ed@xxxxxxxxxxxxxx>
> Acked-by: Andres Salomon <dilinger@xxxxxxxxxx>
Again, I hadn't Acked this.. However, it does look fine, so:
Acked-by: Andres Salomon <dilinger@xxxxxxxxxx>
> Cc: Richard Purdie <rpurdie@xxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> ---
> 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
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 07c3f15..4ee921b 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -2168,6 +2168,13 @@ 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
> diff --git a/arch/x86/platform/geode/Makefile
> b/arch/x86/platform/geode/Makefile index 07c9cd0..d8ba564 100644
> --- 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
> diff --git a/arch/x86/platform/geode/geos.c
> b/arch/x86/platform/geode/geos.c new file mode 100644
> index 0000000..c2e6d53
> --- /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@xxxxxxxx>
> + * Copyright (C) 2011 Ed Wildgoose <kernel@xxxxxxxxxxxxxx>
> + * and Philip Prindeville
> <philipp@xxxxxxxxxxxxxxxxxxxxx>
> + *
> + * TODO: There are large similarities with leds-net5501.c
> + * by Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
> + * 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@xxxxxxxxxxxxxxxxxxxxx>");
> +MODULE_DESCRIPTION("Traverse Technologies Geos System Setup");
> +MODULE_LICENSE("GPL");
--
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