From a958e7e7acf38ea8490117a81e59e4d89afa930c Mon Sep 17 00:00:00 2001 From: Arnab Chaudhuri Date: Sat, 7 May 2016 14:44:00 +0530 Subject: [PATCH] liblights: Add BLN support Change-Id: I859416c484777fcf08b5bf8f72ba9f9838e4c1b3 --- exynos4/exynos4210/Android.mk | 7 +- exynos4/exynos4210/liblightsbln/Android.mk | 31 ++++ exynos4/exynos4210/liblightsbln/LICENSE | 188 +++++++++++++++++++++ exynos4/exynos4210/liblightsbln/lights.c | 169 ++++++++++++++++++ 4 files changed, 394 insertions(+), 1 deletion(-) create mode 100644 exynos4/exynos4210/liblightsbln/Android.mk create mode 100644 exynos4/exynos4210/liblightsbln/LICENSE create mode 100644 exynos4/exynos4210/liblightsbln/lights.c diff --git a/exynos4/exynos4210/Android.mk b/exynos4/exynos4210/Android.mk index a6f26206..853639e8 100644 --- a/exynos4/exynos4210/Android.mk +++ b/exynos4/exynos4210/Android.mk @@ -15,7 +15,12 @@ # ifeq ($(TARGET_BOARD_PLATFORM),exynos4) -exynos4210_dirs := liblights + + ifeq ($(BOARD_HAS_BLN),true) + exynos4210_dirs := liblightsbln + else + exynos4210_dirs := liblights + endif include $(call all-named-subdir-makefiles,$(exynos4210_dirs)) diff --git a/exynos4/exynos4210/liblightsbln/Android.mk b/exynos4/exynos4210/liblightsbln/Android.mk new file mode 100644 index 00000000..c4f91ed3 --- /dev/null +++ b/exynos4/exynos4210/liblightsbln/Android.mk @@ -0,0 +1,31 @@ +# Copyright (C) 2012 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/..so +include $(CLEAR_VARS) + +LOCAL_SRC_FILES := lights.c + +LOCAL_PRELINK_MODULE := false +LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw + +LOCAL_SHARED_LIBRARIES := liblog + +LOCAL_MODULE := lights.$(TARGET_BOARD_PLATFORM) + +LOCAL_MODULE_TAGS := optional + +include $(BUILD_SHARED_LIBRARY) diff --git a/exynos4/exynos4210/liblightsbln/LICENSE b/exynos4/exynos4210/liblightsbln/LICENSE new file mode 100644 index 00000000..5b8c40d1 --- /dev/null +++ b/exynos4/exynos4210/liblightsbln/LICENSE @@ -0,0 +1,188 @@ + Copyright (C) 2012 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. + + 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. + + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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-errno : 0; + } else { + if (already_warned == -1) { + ALOGE("write_int failed to open %s\n", path); + already_warned = 1; + } + return -errno; + } +} + +/** Convert RGB to 0-255 integer **/ +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; +} + +/** Is light already enabled? **/ +static int is_lit(struct light_state_t const* state) +{ + return state->color & 0x00ffffff; +} + +/** Set LCD backlight **/ +static int set_light_backlight(struct light_device_t *dev, struct light_state_t const *state) +{ + pthread_mutex_lock(&g_lock); + int err = write_int(BACKLIGHT_FILE, rgb_to_brightness(state)); + pthread_mutex_unlock(&g_lock); + return err; +} + +/** Set buttons backlight **/ +static int set_light_buttons(struct light_device_t* dev, struct light_state_t const* state) +{ + int err = 0; + pthread_mutex_lock (&g_lock); + if(is_lit(state)) + err = write_int(BUTTON_FILE, 1); + else + err = write_int(BUTTON_FILE, 0); + pthread_mutex_unlock (&g_lock); + return err; +} + +/** Set buttons backlight as BLN **/ +static int set_light_notifications(struct light_device_t* dev, struct light_state_t const* state) +{ + int err = 0; + pthread_mutex_lock (&g_lock); + if(is_lit(state)) + err = write_int(NOTIFICATION_FILE, 1); + else + err = write_int(NOTIFICATION_FILE, 0); + pthread_mutex_unlock (&g_lock); + return err; +} + +/** Close the lights device **/ +static int close_lights(struct light_device_t *dev) +{ + if (dev) + free(dev); + return 0; +} + +/** Open a new instance of a lights device using name **/ +static int open_lights(const struct hw_module_t *module, + char const *name, struct hw_device_t **device) +{ + pthread_t lighting_poll_thread; + + 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_BUTTONS, name)) + set_light = set_light_buttons; + else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name)) + set_light = set_light_notifications; + else + return -EINVAL; + + pthread_mutex_init(&g_lock, NULL); + + 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; +} + +/** Method list **/ +static struct hw_module_methods_t lights_methods = +{ + .open = open_lights, +}; + +/** The backlight module **/ + +struct hw_module_t HAL_MODULE_INFO_SYM = { + .tag = HARDWARE_MODULE_TAG, + .version_major = 1, + .version_minor = 0, + .id = LIGHTS_HARDWARE_MODULE_ID, + .name = "Lights module", + .author = "The CyanogenMod Project", + .methods = &lights_methods, +};