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bpfire/src/patches/linux-3.14-apu_leds.patch
Arne Fitzenreiter 545c15b0a1 kernel: add PC Engines(TM) APU2 LED driver
2016-03-26 10:15:45 +01:00

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diff -Naur linux-3.14.65.org/arch/x86/Kconfig linux-3.14.65/arch/x86/Kconfig
--- linux-3.14.65.org/arch/x86/Kconfig 2016-03-16 16:42:30.000000000 +0100
+++ linux-3.14.65/arch/x86/Kconfig 2016-03-25 14:36:22.953256019 +0100
@@ -2287,6 +2287,7 @@
- AC adapter status updates
- Battery status updates
+
config ALIX
bool "PCEngines ALIX System Support (LED setup)"
select GPIOLIB
@@ -2325,6 +2326,18 @@
endif # X86_32
+config APULED
+ bool "PCEngines APU Led Support"
+ depends on DMI
+ ---help---
+ This option enables system support for the PCEngines APU1.
+
+config APU2LED
+ bool "PCEngines APU2 Led Support"
+ depends on DMI
+ ---help---
+ This option enables system support for the PCEngines APU2.
+
config AMD_NB
def_bool y
depends on CPU_SUP_AMD && PCI
diff -Naur linux-3.14.65.org/arch/x86/platform/apu/apu2-led.c linux-3.14.65/arch/x86/platform/apu/apu2-led.c
--- linux-3.14.65.org/arch/x86/platform/apu/apu2-led.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-3.14.65/arch/x86/platform/apu/apu2-led.c 2016-03-25 15:04:34.476689422 +0100
@@ -0,0 +1,180 @@
+/*
+ * LEDs driver for PCEngines apu2
+ *
+ * this basic driver only set the output, configuration
+ * has already done by bios/coreboot.
+ * suspend/resume was not tested because IPFire not use it.
+ *
+ * Copyright (C) 2016 Arne Fitzenreiter <arne_f@ipfire.org> ,
+ * based on Christian Herzog's apu_led.
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <asm/io.h>
+#include <linux/dmi.h>
+
+#define DRVNAME "apu2-led"
+#define BASEADDR (0xFED81610)
+
+static struct platform_device *pdev;
+unsigned int *apu2_led_p1;
+unsigned int *apu2_led_p2;
+unsigned int *apu2_led_p3;
+
+static void apu2_led_set_1(struct led_classdev *led_cdev,
+ enum led_brightness value) {
+ if (value)
+ iowrite32((ioread32(apu2_led_p1)&~BIT(22)), apu2_led_p1);
+ else
+ iowrite32((ioread32(apu2_led_p1)|BIT(22)), apu2_led_p1);
+}
+
+static void apu2_led_set_2(struct led_classdev *led_cdev,
+ enum led_brightness value) {
+ if (value)
+ iowrite32((ioread32(apu2_led_p2)&~BIT(22)), apu2_led_p2);
+ else
+ iowrite32((ioread32(apu2_led_p2)|BIT(22)), apu2_led_p2);
+}
+
+static void apu2_led_set_3(struct led_classdev *led_cdev,
+ enum led_brightness value) {
+ if (value)
+ iowrite32((ioread32(apu2_led_p3)&~BIT(22)), apu2_led_p3);
+ else
+ iowrite32((ioread32(apu2_led_p3)|BIT(22)), apu2_led_p3);
+}
+
+static struct led_classdev apu2_led_1 = {
+ .name = "apu:1",
+ .brightness_set = apu2_led_set_1,
+};
+
+static struct led_classdev apu2_led_2 = {
+ .name = "apu:2",
+ .brightness_set = apu2_led_set_2,
+};
+
+static struct led_classdev apu2_led_3 = {
+ .name = "apu:3",
+ .brightness_set = apu2_led_set_3,
+};
+
+
+#ifdef CONFIG_PM
+static int apu2_led_suspend(struct platform_device *dev,
+ pm_message_t state)
+{
+ led_classdev_suspend(&apu2_led_1);
+ led_classdev_suspend(&apu2_led_2);
+ led_classdev_suspend(&apu2_led_3);
+ return 0;
+}
+
+static int apu2_led_resume(struct platform_device *dev)
+{
+ led_classdev_resume(&apu2_led_1);
+ led_classdev_resume(&apu2_led_2);
+ led_classdev_resume(&apu2_led_3);
+ return 0;
+}
+#else
+#define apu2_led_suspend NULL
+#define apu2_led_resume NULL
+#endif
+
+static int apu2_led_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = led_classdev_register(&pdev->dev, &apu2_led_1);
+ if (ret == 0)
+ {
+ ret = led_classdev_register(&pdev->dev, &apu2_led_2);
+ if (ret >= 0)
+ {
+ ret = led_classdev_register(&pdev->dev, &apu2_led_3);
+ if (ret < 0)
+ led_classdev_unregister(&apu2_led_2);
+ }
+ if (ret < 0)
+ led_classdev_unregister(&apu2_led_1);
+ }
+ return ret;
+}
+
+static int apu2_led_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&apu2_led_1);
+ led_classdev_unregister(&apu2_led_2);
+ led_classdev_unregister(&apu2_led_3);
+ return 0;
+}
+
+static struct platform_driver apu2_led_driver = {
+ .probe = apu2_led_probe,
+ .remove = apu2_led_remove,
+ .suspend = apu2_led_suspend,
+ .resume = apu2_led_resume,
+ .driver = {
+ .name = DRVNAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init apu2_led_init(void)
+{
+ int ret=0;
+ const char *vendor, *product;
+
+ vendor = dmi_get_system_info(DMI_SYS_VENDOR);
+ if (!vendor || strcmp(vendor, "PC Engines"))
+ goto out;
+
+ product = dmi_get_system_info(DMI_PRODUCT_NAME);
+ if (!product || strcmp(product, "apu2"))
+ goto out;
+
+ printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
+ KBUILD_MODNAME, vendor, product);
+
+ ret = platform_driver_register(&apu2_led_driver);
+ if (ret < 0)
+ goto out;
+
+ pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
+ if (IS_ERR(pdev)) {
+ ret = PTR_ERR(pdev);
+ platform_driver_unregister(&apu2_led_driver);
+ goto out;
+ }
+
+ apu2_led_p1 = ioremap(BASEADDR, 4);
+ apu2_led_p2 = ioremap(BASEADDR+4, 4);
+ apu2_led_p3 = ioremap(BASEADDR+8, 4);
+
+out:
+ return ret;
+}
+
+static void __exit apu2_led_exit(void)
+{
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&apu2_led_driver);
+}
+
+module_init(apu2_led_init);
+module_exit(apu2_led_exit);
+
+MODULE_AUTHOR("Arne Fitzenreiter");
+MODULE_DESCRIPTION("PCEngines apu2 LED driver");
+MODULE_LICENSE("GPL");
diff -Naur linux-3.14.65.org/arch/x86/platform/apu/apu-led.c linux-3.14.65/arch/x86/platform/apu/apu-led.c
--- linux-3.14.65.org/arch/x86/platform/apu/apu-led.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-3.14.65/arch/x86/platform/apu/apu-led.c 2016-03-25 15:05:35.776693425 +0100
@@ -0,0 +1,181 @@
+/*
+ * LEDs driver for PCEngines apu
+ *
+ * Copyright (C) 2013 Christian Herzog <daduke@daduke.org>, based on
+ * Petr Leibman's leds-alix
+ * Hardware presence check added by Arne Fitzenreiter <arne_f@ipfire.org>
+ * Based on leds-wrap.c
+ * Hardware info taken from http://www.dpie.com/manuals/miniboards/kontron/KTD-S0043-0_KTA55_SoftwareGuide.pdf
+ *
+ * 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/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <asm/io.h>
+#include <linux/dmi.h>
+
+#define DRVNAME "apu-led"
+#define BASEADDR (0xFED801BD)
+#define LEDON (0x8)
+#define LEDOFF (0xC8)
+
+static struct platform_device *pdev;
+unsigned int *apu_led_p1;
+unsigned int *apu_led_p2;
+unsigned int *apu_led_p3;
+
+static void apu_led_set_1(struct led_classdev *led_cdev,
+ enum led_brightness value) {
+ if (value)
+ iowrite8(LEDON, apu_led_p1);
+ else
+ iowrite8(LEDOFF, apu_led_p1);
+}
+
+static void apu_led_set_2(struct led_classdev *led_cdev,
+ enum led_brightness value) {
+ if (value)
+ iowrite8(LEDON, apu_led_p2);
+ else
+ iowrite8(LEDOFF, apu_led_p2);
+}
+
+static void apu_led_set_3(struct led_classdev *led_cdev,
+ enum led_brightness value) {
+ if (value)
+ iowrite8(LEDON, apu_led_p3);
+ else
+ iowrite8(LEDOFF, apu_led_p3);
+}
+
+static struct led_classdev apu_led_1 = {
+ .name = "apu:1",
+ .brightness_set = apu_led_set_1,
+};
+
+static struct led_classdev apu_led_2 = {
+ .name = "apu:2",
+ .brightness_set = apu_led_set_2,
+};
+
+static struct led_classdev apu_led_3 = {
+ .name = "apu:3",
+ .brightness_set = apu_led_set_3,
+};
+
+
+#ifdef CONFIG_PM
+static int apu_led_suspend(struct platform_device *dev,
+ pm_message_t state)
+{
+ led_classdev_suspend(&apu_led_1);
+ led_classdev_suspend(&apu_led_2);
+ led_classdev_suspend(&apu_led_3);
+ return 0;
+}
+
+static int apu_led_resume(struct platform_device *dev)
+{
+ led_classdev_resume(&apu_led_1);
+ led_classdev_resume(&apu_led_2);
+ led_classdev_resume(&apu_led_3);
+ return 0;
+}
+#else
+#define apu_led_suspend NULL
+#define apu_led_resume NULL
+#endif
+
+static int apu_led_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = led_classdev_register(&pdev->dev, &apu_led_1);
+ if (ret == 0)
+ {
+ ret = led_classdev_register(&pdev->dev, &apu_led_2);
+ if (ret >= 0)
+ {
+ ret = led_classdev_register(&pdev->dev, &apu_led_3);
+ if (ret < 0)
+ led_classdev_unregister(&apu_led_2);
+ }
+ if (ret < 0)
+ led_classdev_unregister(&apu_led_1);
+ }
+ return ret;
+}
+
+static int apu_led_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&apu_led_1);
+ led_classdev_unregister(&apu_led_2);
+ led_classdev_unregister(&apu_led_3);
+ return 0;
+}
+
+static struct platform_driver apu_led_driver = {
+ .probe = apu_led_probe,
+ .remove = apu_led_remove,
+ .suspend = apu_led_suspend,
+ .resume = apu_led_resume,
+ .driver = {
+ .name = DRVNAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init apu_led_init(void)
+{
+ int ret=0;
+ const char *vendor, *product;
+
+ vendor = dmi_get_system_info(DMI_SYS_VENDOR);
+ if (!vendor || strcmp(vendor, "PC Engines"))
+ goto out;
+
+ product = dmi_get_system_info(DMI_PRODUCT_NAME);
+ if (!product || strcmp(product, "APU"))
+ goto out;
+
+ printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
+ KBUILD_MODNAME, vendor, product);
+
+ ret = platform_driver_register(&apu_led_driver);
+ if (ret < 0)
+ goto out;
+
+ pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
+ if (IS_ERR(pdev)) {
+ ret = PTR_ERR(pdev);
+ platform_driver_unregister(&apu_led_driver);
+ goto out;
+ }
+
+ apu_led_p1 = ioremap(BASEADDR, 1);
+ apu_led_p2 = ioremap(BASEADDR+1, 1);
+ apu_led_p3 = ioremap(BASEADDR+2, 1);
+
+out:
+ return ret;
+}
+
+static void __exit apu_led_exit(void)
+{
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&apu_led_driver);
+}
+
+module_init(apu_led_init);
+module_exit(apu_led_exit);
+
+MODULE_AUTHOR("Christian Herzog");
+MODULE_DESCRIPTION("PCEngines apu LED driver");
+MODULE_LICENSE("GPL");
diff -Naur linux-3.14.65.org/arch/x86/platform/apu/Makefile linux-3.14.65/arch/x86/platform/apu/Makefile
--- linux-3.14.65.org/arch/x86/platform/apu/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ linux-3.14.65/arch/x86/platform/apu/Makefile 2016-03-25 14:35:30.506585952 +0100
@@ -0,0 +1,2 @@
+obj-$(CONFIG_APULED) += apu-led.o
+obj-$(CONFIG_APU2LED) += apu2-led.o
diff -Naur linux-3.14.65.org/arch/x86/platform/Makefile linux-3.14.65/arch/x86/platform/Makefile
--- linux-3.14.65.org/arch/x86/platform/Makefile 2016-03-16 16:42:30.000000000 +0100
+++ linux-3.14.65/arch/x86/platform/Makefile 2016-03-25 14:31:04.079903947 +0100
@@ -1,4 +1,5 @@
# Platform specific code goes here
+obj-y += apu/
obj-y += ce4100/
obj-y += efi/
obj-y += geode/
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