diff options
Diffstat (limited to 'recipes-kernel/linux/linux-yocto-dev/h3600/0006-leds-add-driver-for-the-iPAQ-micro.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-yocto-dev/h3600/0006-leds-add-driver-for-the-iPAQ-micro.patch | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-yocto-dev/h3600/0006-leds-add-driver-for-the-iPAQ-micro.patch b/recipes-kernel/linux/linux-yocto-dev/h3600/0006-leds-add-driver-for-the-iPAQ-micro.patch new file mode 100644 index 0000000..212d366 --- /dev/null +++ b/recipes-kernel/linux/linux-yocto-dev/h3600/0006-leds-add-driver-for-the-iPAQ-micro.patch @@ -0,0 +1,193 @@ +From b4c8a1cdfbbaf615a6d9da3e46f1b788fc0f1568 Mon Sep 17 00:00:00 2001 +From: Linus Walleij <linus.walleij@linaro.org> +Date: Thu, 31 Oct 2013 10:53:06 -0700 +Subject: [PATCH 6/7] leds: add driver for the iPAQ micro + +This adds a driver for the iPAQ microcontroller LED. + +Signed-off-by: Linus Walleij <linus.walleij@linaro.org> +--- + drivers/leds/Kconfig | 7 +++ + drivers/leds/Makefile | 1 + + drivers/leds/leds-ipaq-micro.c | 139 +++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 147 insertions(+) + create mode 100644 drivers/leds/leds-ipaq-micro.c + +diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig +index 72156c123033..39dae8a15297 100644 +--- a/drivers/leds/Kconfig ++++ b/drivers/leds/Kconfig +@@ -143,6 +143,13 @@ config LEDS_SUNFIRE + This option enables support for the Left, Middle, and Right + LEDs on the I/O and CPU boards of SunFire UltraSPARC servers. + ++config LEDS_IPAQ_MICRO ++ tristate "LED Support for the Compaq iPAQ h3xxx" ++ depends on MFD_IPAQ_MICRO ++ help ++ Choose this option if you want to use the notification LED on ++ Compaq/HP iPAQ h3100 and h3600. ++ + config LEDS_HP6XX + tristate "LED Support for the HP Jornada 6xx" + depends on LEDS_CLASS +diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile +index 3cd76dbd9be2..db0e6e856ca9 100644 +--- a/drivers/leds/Makefile ++++ b/drivers/leds/Makefile +@@ -31,6 +31,7 @@ obj-$(CONFIG_LEDS_LP8501) += leds-lp8501.o + obj-$(CONFIG_LEDS_LP8788) += leds-lp8788.o + obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o + obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o ++obj-$(CONFIG_LEDS_IPAQ_MICRO) += leds-ipaq-micro.o + obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o + obj-$(CONFIG_LEDS_OT200) += leds-ot200.o + obj-$(CONFIG_LEDS_FSG) += leds-fsg.o +diff --git a/drivers/leds/leds-ipaq-micro.c b/drivers/leds/leds-ipaq-micro.c +new file mode 100644 +index 000000000000..a716ec27f066 +--- /dev/null ++++ b/drivers/leds/leds-ipaq-micro.c +@@ -0,0 +1,139 @@ ++/* ++ * 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. ++ * ++ * h3xxx atmel micro companion support, notification LED subdevice ++ * ++ * Author : Linus Walleij <linus.walleij@linaro.org> ++ */ ++ ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/mfd/ipaq-micro.h> ++#include <linux/leds.h> ++ ++#define LED_YELLOW 0x00 ++#define LED_GREEN 0x01 ++ ++#define LED_EN (1 << 4) /* LED ON/OFF 0:off, 1:on */ ++#define LED_AUTOSTOP (1 << 5) /* LED ON/OFF auto stop set 0:disable, 1:enable */ ++#define LED_ALWAYS (1 << 6) /* LED Interrupt Mask 0:No mask, 1:mask */ ++ ++static void micro_leds_brightness_set(struct led_classdev *led_cdev, ++ enum led_brightness value) ++{ ++ struct ipaq_micro *micro = dev_get_drvdata(led_cdev->dev->parent->parent); ++ /* ++ * In this message: ++ * Byte 0 = LED color: 0 = yellow, 1 = green ++ * yellow LED is always ~30 blinks per minute ++ * Byte 1 = duration (flags?) appears to be ignored ++ * Byte 2 = green ontime in 1/10 sec (deciseconds) ++ * 1 = 1/10 second ++ * 0 = 256/10 second ++ * Byte 3 = green offtime in 1/10 sec (deciseconds) ++ * 1 = 1/10 second ++ * 0 = 256/10 seconds ++ */ ++ struct ipaq_micro_msg msg = { ++ .id = MSG_NOTIFY_LED, ++ .tx_len = 4, ++ }; ++ ++ msg.tx_data[0] = LED_GREEN; ++ msg.tx_data[1] = 0; ++ if (value) { ++ msg.tx_data[2] = 0; /* Duty cycle 256 */ ++ msg.tx_data[3] = 1; ++ } else { ++ msg.tx_data[2] = 1; ++ msg.tx_data[3] = 0; /* Duty cycle 256 */ ++ } ++ ipaq_micro_tx_msg_sync(micro, &msg); ++} ++ ++/* Maximum duty cycle in ms 256/10 sec = 25600 ms */ ++#define IPAQ_LED_MAX_DUTY 25600 ++ ++static int micro_leds_blink_set(struct led_classdev *led_cdev, ++ unsigned long *delay_on, ++ unsigned long *delay_off) ++{ ++ struct ipaq_micro *micro = dev_get_drvdata(led_cdev->dev->parent->parent); ++ /* ++ * In this message: ++ * Byte 0 = LED color: 0 = yellow, 1 = green ++ * yellow LED is always ~30 blinks per minute ++ * Byte 1 = duration (flags?) appears to be ignored ++ * Byte 2 = green ontime in 1/10 sec (deciseconds) ++ * 1 = 1/10 second ++ * 0 = 256/10 second ++ * Byte 3 = green offtime in 1/10 sec (deciseconds) ++ * 1 = 1/10 second ++ * 0 = 256/10 seconds ++ */ ++ struct ipaq_micro_msg msg = { ++ .id = MSG_NOTIFY_LED, ++ .tx_len = 4, ++ }; ++ ++ msg.tx_data[0] = LED_GREEN; ++ if (*delay_on > IPAQ_LED_MAX_DUTY || ++ *delay_off > IPAQ_LED_MAX_DUTY) ++ return -EINVAL; ++ ++ if (*delay_on == 0 && *delay_off == 0) { ++ *delay_on = 100; ++ *delay_off = 100; ++ } ++ ++ msg.tx_data[1] = 0; ++ if (*delay_on >= IPAQ_LED_MAX_DUTY) ++ msg.tx_data[2] = 0; ++ else ++ msg.tx_data[2] = (u8) DIV_ROUND_CLOSEST(*delay_on, 100); ++ if (*delay_off >= IPAQ_LED_MAX_DUTY) ++ msg.tx_data[3] = 0; ++ else ++ msg.tx_data[3] = (u8) DIV_ROUND_CLOSEST(*delay_off, 100); ++ return ipaq_micro_tx_msg_sync(micro, &msg); ++} ++ ++static struct led_classdev micro_led = { ++ .name = "notify", ++ .brightness_set = micro_leds_brightness_set, ++ .blink_set = micro_leds_blink_set, ++ .flags = LED_CORE_SUSPENDRESUME, ++}; ++ ++static int micro_leds_probe(struct platform_device *pdev) ++{ ++ int ret; ++ ++ ret = led_classdev_register(&pdev->dev, µ_led); ++ if (ret) ++ dev_err(&pdev->dev, "registering led failed: %d\n", ret); ++ dev_info(&pdev->dev, "iPAQ micro notification LED driver\n"); ++ ++ return 0; ++} ++ ++static int micro_leds_remove(struct platform_device *pdev) ++{ ++ led_classdev_unregister(µ_led); ++ return 0; ++} ++ ++struct platform_driver micro_leds_device_driver = { ++ .driver = { ++ .name = "ipaq-micro-leds", ++ }, ++ .probe = micro_leds_probe, ++ .remove = micro_leds_remove, ++}; ++module_platform_driver(micro_leds_device_driver); ++ ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("driver for iPAQ Atmel micro leds"); ++MODULE_ALIAS("platform:ipaq-micro-leds"); +-- +1.9.0 + |