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exynos4x12: add lights module

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Change-Id: Ib37f0b7cc94a5b9607817e3b3bee4814074517a4
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codeworkx 2012-06-11 17:47:21 +02:00
parent 952954aafa
commit beeef87d0b
5 changed files with 493 additions and 0 deletions
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20
exynos4/exynos4x12/Android.mk Normal file
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#
# Copyright (C) 2012 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
ifeq ($(TARGET_SOC),exynos4x12)
exynos4x12_dirs := liblights
include $(call all-named-subdir-makefiles,$(exynos4x12_dirs))
endif

37
exynos4/exynos4x12/liblights/Android.mk Normal file
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# Copyright (C) 2011 The Android Open Source Project
# Copyright (C) 2011 The CyanogenMod Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
LOCAL_PATH:= $(call my-dir)
# HAL module implemenation, not prelinked and stored in
# hw/<COPYPIX_HARDWARE_MODULE_ID>.<ro.board.platform>.so
include $(CLEAR_VARS)
LOCAL_SRC_FILES := lights.c
LOCAL_PRELINK_MODULE := false
LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
LOCAL_SHARED_LIBRARIES := liblog
ifeq ($(BOARD_HAS_LED_NOTIF),true)
LOCAL_CFLAGS += -DLED_NOTIFICATION
endif
LOCAL_MODULE := lights.$(TARGET_BOARD_PLATFORM)
LOCAL_MODULE_TAGS := optional
include $(BUILD_SHARED_LIBRARY)

192
exynos4/exynos4x12/liblights/NOTICE Normal file
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Copyright (C) 2012 The Android Open Source Project
The CyanogenMod Project
Daniel Hillenbrand <codeworkx@cyanogenmod.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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243
exynos4/exynos4x12/liblights/lights.c Normal file
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/*
* Copyright (C) 2012 The Android Open Source Project
* The CyanogenMod Project
* Daniel Hillenbrand <codeworkx@cyanogenmod.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "lights"
#define LOG_NDEBUG 0
#include <cutils/log.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <hardware/lights.h>
/******************************************************************************/
static pthread_once_t g_init = PTHREAD_ONCE_INIT;
static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
char const*const PANEL_FILE = "/sys/class/backlight/panel/brightness";
char const*const BUTTON_FILE = "/sys/class/sec/sec_touchkey/brightness";
char const*const LED_RED = "/sys/class/sec/led/led_r";
char const*const LED_GREEN = "/sys/class/sec/led/led_g";
char const*const LED_BLUE = "/sys/class/sec/led/led_b";
char const*const LED_BLINK = "/sys/class/sec/led/led_blink";
#define MAX_WRITE_CMD 25
struct led_config {
int red;
int green;
int blue;
char blink[MAX_WRITE_CMD];
};
void init_g_lock(void)
{
pthread_mutex_init(&g_lock, NULL);
}
static int write_int(char const *path, int value)
{
int fd;
static int already_warned;
already_warned = 0;
LOGV("write_int: path %s, value %d", path, value);
fd = open(path, O_RDWR);
if (fd >= 0) {
char buffer[20];
int bytes = sprintf(buffer, "%d\n", value);
int amt = write(fd, buffer, bytes);
close(fd);
return amt == -1 ? -errno : 0;
} else {
if (already_warned == 0) {
LOGE("write_int failed to open %s\n", path);
already_warned = 1;
}
return -errno;
}
}
static int write_str(char const *path, const char* value)
{
int fd;
static int already_warned;
already_warned = 0;
LOGV("write_str: path %s, value %s", path, value);
fd = open(path, O_RDWR);
if (fd >= 0) {
char buffer[MAX_WRITE_CMD];
int bytes = sprintf(buffer, "%s\n", value);
int amt = write(fd, buffer, bytes);
close(fd);
return amt == -1 ? -errno : 0;
} else {
if (already_warned == 0) {
LOGE("write_str failed to open %s\n", path);
already_warned = 1;
}
return -errno;
}
}
static int rgb_to_brightness(struct light_state_t const *state)
{
int color = state->color & 0x00ffffff;
return ((77*((color>>16) & 0x00ff))
+ (150*((color>>8) & 0x00ff)) + (29*(color & 0x00ff))) >> 8;
}
static int set_light_backlight(struct light_device_t *dev,
struct light_state_t const *state)
{
int err = 0;
int brightness = rgb_to_brightness(state);
pthread_mutex_lock(&g_lock);
err = write_int(PANEL_FILE, brightness);
err = write_int(BUTTON_FILE, brightness > 0 ? 1 : 2);
pthread_mutex_unlock(&g_lock);
return err;
}
static int close_lights(struct light_device_t *dev)
{
LOGV("close_light is called");
if (dev)
free(dev);
return 0;
}
/* LEDs */
static int write_leds(struct led_config led)
{
int err = 0;
pthread_mutex_lock(&g_lock);
err = write_int(LED_RED, led.red);
err = write_int(LED_GREEN, led.green);
err = write_int(LED_BLUE, led.blue);
err = write_str(LED_BLINK, led.blink);
pthread_mutex_unlock(&g_lock);
return err;
}
static int set_light_leds(struct light_state_t const *state, int type)
{
struct led_config led;
unsigned int colorRGB;
colorRGB = state->color;
switch (state->flashMode) {
case LIGHT_FLASH_NONE:
led.red = 0;
led.green = 0;
led.blue = 0;
snprintf(led.blink, MAX_WRITE_CMD, "0x00 0 0");
break;
case LIGHT_FLASH_TIMED:
case LIGHT_FLASH_HARDWARE:
led.red = (colorRGB >> 16) & 0xFF;
led.green = (colorRGB >> 8) & 0xFF;
led.blue = colorRGB & 0xFF;
snprintf(led.blink, MAX_WRITE_CMD, "0xFF 80 2000");
break;
default:
return -EINVAL;
}
return write_leds(led);
}
static int set_light_leds_notifications(struct light_device_t *dev,
struct light_state_t const *state)
{
return set_light_leds(state, 0);
}
static int set_light_leds_attention(struct light_device_t *dev,
struct light_state_t const *state)
{
return set_light_leds(state, 1);
}
static int open_lights(const struct hw_module_t *module, char const *name,
struct hw_device_t **device)
{
int (*set_light)(struct light_device_t *dev,
struct light_state_t const *state);
if (0 == strcmp(LIGHT_ID_BACKLIGHT, name))
set_light = set_light_backlight;
else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
set_light = set_light_leds_notifications;
else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
set_light = set_light_leds_attention;
else
return -EINVAL;
pthread_once(&g_init, init_g_lock);
struct light_device_t *dev = malloc(sizeof(struct light_device_t));
memset(dev, 0, sizeof(*dev));
dev->common.tag = HARDWARE_DEVICE_TAG;
dev->common.version = 0;
dev->common.module = (struct hw_module_t *)module;
dev->common.close = (int (*)(struct hw_device_t *))close_lights;
dev->set_light = set_light;
*device = (struct hw_device_t *)dev;
return 0;
}
static struct hw_module_methods_t lights_module_methods = {
.open = open_lights,
};
const struct hw_module_t HAL_MODULE_INFO_SYM = {
.tag = HARDWARE_MODULE_TAG,
.version_major = 1,
.version_minor = 0,
.id = LIGHTS_HARDWARE_MODULE_ID,
.name = "Exynos4x12 lights Module",
.author = "The CyanogenMod Project",
.methods = &lights_module_methods,
};

1
exynos4x12.mk
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@ -17,6 +17,7 @@ ifeq ($(TARGET_SOC),exynos4x12)
include $(TARGET_HAL_PATH)/Android.mk
include hardware/samsung/exynos/multimedia/Android.mk
include hardware/samsung/exynos4/exynos4x12/Android.mk
endif
endif