On Fri, 6 Jan 2012 17:35:32 -0700
Philip Prindeville <philipp@xxxxxxxxxxxxxxxxxxxxx> wrote:
> From: "Philip A. Prindeville" <philipp@xxxxxxxxxxxxxxxxxxxxx>
>
> Trivial platform driver for Soekris Engineering net5501 single-board
> computer. Probes well-known locations in ROM for BIOS signature to
> confirm correct platform. Registers 1 LED and 1 GPIO-based button
> (typically used for soft reset).
>
> Signed-off-by: Philip Prindeville <philipp@xxxxxxxxxxxxxxxxxxxxx>
> Cc: Richard Purdie <rpurdie@xxxxxxxxx>
> Acked-by: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Looks fine to me.
Acked-by: Andres Salomon <dilinger@xxxxxxxxxx>
> ---
> arch/x86/Kconfig | 6 ++
> arch/x86/platform/geode/Makefile | 1 +
> arch/x86/platform/geode/net5501.c | 147
> +++++++++++++++++++++++++++++++++++++
> drivers/leds/leds-net5501.c | 97 ------------------------ 4
> files changed, 154 insertions(+), 97 deletions(-) create mode 100644
> arch/x86/platform/geode/net5501.c delete mode 100644
> drivers/leds/leds-net5501.c
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 90cab6f..b4d1dcf 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -2164,6 +2164,12 @@ config ALIX
>
> Note: You have to set alix.force=1 for boards with Award
> BIOS.
> +config NET5501
> + bool "Soekris Engineering net5501 System Support (LEDS,
> GPIO, etc)"
> + select GPIOLIB
> + ---help---
> + This option enables system support for the Soekris
> Engineering net5501. +
> endif # X86_32
>
> config AMD_NB
> diff --git a/arch/x86/platform/geode/Makefile
> b/arch/x86/platform/geode/Makefile index 07c9cd0..246b788 100644
> --- a/arch/x86/platform/geode/Makefile
> +++ b/arch/x86/platform/geode/Makefile
> @@ -1 +1,2 @@
> obj-$(CONFIG_ALIX) += alix.o
> +obj-$(CONFIG_NET5501) += net5501.o
> diff --git a/arch/x86/platform/geode/net5501.c
> b/arch/x86/platform/geode/net5501.c new file mode 100644
> index 0000000..40b4bd0
> --- /dev/null
> +++ b/arch/x86/platform/geode/net5501.c
> @@ -0,0 +1,147 @@
> +/*
> + * System Specific setup for Soekris net5501
> + * At the moment this means setup of GPIO control of LEDs and buttons
> + * on net5501 boards.
> + *
> + *
> + * Copyright (C) 2008-2009 Tower Technologies
> + * Written by Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
> + *
> + * Copyright (C) 2008 Constantin Baranov <const@xxxxxxxx>
> + * Copyright (C) 2011 Ed Wildgoose <kernel@xxxxxxxxxxxxxx>
> + * and Philip Prindeville
> <philipp@xxxxxxxxxxxxxxxxxxxxx>
> + *
> + * 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/leds.h>
> +#include <linux/platform_device.h>
> +#include <linux/gpio.h>
> +#include <linux/input.h>
> +#include <linux/gpio_keys.h>
> +
> +#include <asm/geode.h>
> +
> +#define BIOS_REGION_BASE 0xffff0000
> +#define BIOS_REGION_SIZE 0x00010000
> +
> +static struct gpio_keys_button net5501_gpio_buttons[] = {
> + {
> + .code = KEY_RESTART,
> + .gpio = 24,
> + .active_low = 1,
> + .desc = "Reset button",
> + .type = EV_KEY,
> + .wakeup = 0,
> + .debounce_interval = 100,
> + .can_disable = 0,
> + }
> +};
> +static struct gpio_keys_platform_data net5501_buttons_data = {
> + .buttons = net5501_gpio_buttons,
> + .nbuttons = ARRAY_SIZE(net5501_gpio_buttons),
> + .poll_interval = 20,
> +};
> +
> +static struct platform_device net5501_buttons_dev = {
> + .name = "gpio-keys-polled",
> + .id = 1,
> + .dev = {
> + .platform_data = &net5501_buttons_data,
> + }
> +};
> +
> +static struct gpio_led net5501_leds[] = {
> + {
> + .name = "net5501:1",
> + .gpio = 6,
> + .default_trigger = "default-on",
> + .active_low = 1,
> + },
> +};
> +
> +static struct gpio_led_platform_data net5501_leds_data = {
> + .num_leds = ARRAY_SIZE(net5501_leds),
> + .leds = net5501_leds,
> +};
> +
> +static struct platform_device net5501_leds_dev = {
> + .name = "leds-gpio",
> + .id = -1,
> + .dev.platform_data = &net5501_leds_data,
> +};
> +
> +static struct __initdata platform_device *net5501_devs[] = {
> + &net5501_buttons_dev,
> + &net5501_leds_dev,
> +};
> +
> +static void __init register_net5501(void)
> +{
> + /* Setup LED control through leds-gpio driver */
> + platform_add_devices(net5501_devs, ARRAY_SIZE(net5501_devs));
> +}
> +
> +struct net5501_board {
> + u16 offset;
> + u16 len;
> + char *sig;
> +};
> +
> +static struct net5501_board __initdata boards[] = {
> + { 0xb7b, 7, "net5501" }, /* net5501 v1.33/1.33c */
> + { 0xb1f, 7, "net5501" }, /* net5501 v1.32i */
> +};
> +
> +static int __init net5501_present(void)
> +{
> + int i;
> + unsigned char *rombase, *bios;
> +
> + rombase = ioremap(BIOS_REGION_BASE, BIOS_REGION_SIZE - 1);
> + if (!rombase)
> + printk(KERN_INFO "Soekris net5501 LED driver failed
> to get rombase"); +
> + bios = rombase + 0x20; /* null terminated */
> +
> + if (memcmp(bios, "comBIOS", 7))
> + goto unmap;
> +
> + for (i = 0; i < ARRAY_SIZE(boards); i++) {
> + unsigned char *model = rombase + boards[i].offset;
> +
> + if (memcmp(model, boards[i].sig, boards[i].len) ==
> 0) {
> + printk(KERN_INFO "Soekris %s: %s\n", model,
> bios); +
> + register_net5501();
> + break;
> + }
> + }
> +
> +unmap:
> + iounmap(rombase);
> + return 0;
> +}
> +
> +static int __init net5501_init(void)
> +{
> + if (!is_geode())
> + return 0;
> +
> + if (net5501_present())
> + register_net5501();
> +
> + return 0;
> +}
> +
> +module_init(net5501_init);
> +
> +MODULE_AUTHOR("Philip Prindeville <philipp@xxxxxxxxxxxxxxxxxxxxx>");
> +MODULE_DESCRIPTION("Soekris net5501 System Setup");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/leds/leds-net5501.c b/drivers/leds/leds-net5501.c
> deleted file mode 100644
> index 0555d47..0000000
> --- a/drivers/leds/leds-net5501.c
> +++ /dev/null
> @@ -1,97 +0,0 @@
> -/*
> - * Soekris board support code
> - *
> - * Copyright (C) 2008-2009 Tower Technologies
> - * Written by Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
> - *
> - * 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/leds.h>
> -#include <linux/platform_device.h>
> -#include <linux/gpio.h>
> -#include <linux/module.h>
> -
> -#include <asm/geode.h>
> -
> -static const struct gpio_led net5501_leds[] = {
> - {
> - .name = "error",
> - .gpio = 6,
> - .default_trigger = "default-on",
> - },
> -};
> -
> -static struct gpio_led_platform_data net5501_leds_data = {
> - .num_leds = ARRAY_SIZE(net5501_leds),
> - .leds = net5501_leds,
> -};
> -
> -static struct platform_device net5501_leds_dev = {
> - .name = "leds-gpio",
> - .id = -1,
> - .dev.platform_data = &net5501_leds_data,
> -};
> -
> -static void __init init_net5501(void)
> -{
> - platform_device_register(&net5501_leds_dev);
> -}
> -
> -struct soekris_board {
> - u16 offset;
> - char *sig;
> - u8 len;
> - void (*init)(void);
> -};
> -
> -static struct soekris_board __initdata boards[] = {
> - { 0xb7b, "net5501", 7, init_net5501 }, /* net5501
> v1.33/1.33c */
> - { 0xb1f, "net5501", 7, init_net5501 }, /* net5501
> v1.32i */ -};
> -
> -static int __init soekris_init(void)
> -{
> - int i;
> - unsigned char *rombase, *bios;
> -
> - if (!is_geode())
> - return 0;
> -
> - rombase = ioremap(0xffff0000, 0xffff);
> - if (!rombase) {
> - printk(KERN_INFO "Soekris net5501 LED driver failed
> to get rombase");
> - return 0;
> - }
> -
> - bios = rombase + 0x20; /* null terminated */
> -
> - if (strncmp(bios, "comBIOS", 7))
> - goto unmap;
> -
> - for (i = 0; i < ARRAY_SIZE(boards); i++) {
> - unsigned char *model = rombase + boards[i].offset;
> -
> - if (strncmp(model, boards[i].sig, boards[i].len) ==
> 0) {
> - printk(KERN_INFO "Soekris %s: %s\n", model,
> bios); -
> - if (boards[i].init)
> - boards[i].init();
> - break;
> - }
> - }
> -
> -unmap:
> - iounmap(rombase);
> - return 0;
> -}
> -
> -arch_initcall(soekris_init);
> -
> -MODULE_LICENSE("GPL");
--
To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
