From 6b7dda74ee24a431fa5ef9f78302a5c97fb3b5ec Mon Sep 17 00:00:00 2001 From: "Christopher N. Hesse" Date: Tue, 15 Mar 2016 02:31:38 +0100 Subject: [PATCH] Initial consumer IR HAL commit * Initially written by crpalmer * Changes and improvements made by: - zwliew: Cleaned up styling - javelinanddart: Added configs to make hal more universal Change-Id: I98eefdde67ad7ed930532a82533a5c91f20abd83 Signed-off-by: Paul Keith --- Android.mk | 1 + consumerir/Android.mk | 40 ++++++++ consumerir/consumerir.c | 207 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 248 insertions(+) create mode 100644 consumerir/Android.mk create mode 100644 consumerir/consumerir.c diff --git a/Android.mk b/Android.mk index 14e25270..593feb4e 100644 --- a/Android.mk +++ b/Android.mk @@ -37,6 +37,7 @@ endif ifeq ($(BOARD_VENDOR),samsung) include $(SAM_ROOT)/AdvancedDisplay/Android.mk +include $(SAM_ROOT)/consumerir/Android.mk include $(SAM_ROOT)/liblights/Android.mk include $(SAM_ROOT)/modemloader/Android.mk include $(SAM_ROOT)/power/Android.mk diff --git a/consumerir/Android.mk b/consumerir/Android.mk new file mode 100644 index 00000000..cd8fd38f --- /dev/null +++ b/consumerir/Android.mk @@ -0,0 +1,40 @@ +# Copyright (C) 2016 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. + +# HAL module implementation stored in +# hw/..so + +LOCAL_PATH := $(call my-dir) + +include $(CLEAR_VARS) + +ifeq ($(IR_HAL_SUFFIX),) +IR_HAL_SUFFIX := $(TARGET_BOARD_PLATFORM) +endif + +LOCAL_MODULE := consumerir.$(IR_HAL_SUFFIX) +LOCAL_MODULE_RELATIVE_PATH := hw +LOCAL_SRC_FILES := consumerir.c +LOCAL_SHARED_LIBRARIES := liblog libcutils +LOCAL_MODULE_TAGS := optional + +ifeq ($(BOARD_IR_HAS_ONE_FREQ_RANGE),true) +LOCAL_CFLAGS += -DUSE_ONE_FREQ_RANGE +endif + +ifeq ($(BOARD_USES_MS_IR_SIGNAL),true) +LOCAL_CFLAGS += -DMS_IR_SIGNAL +endif + +include $(BUILD_SHARED_LIBRARY) diff --git a/consumerir/consumerir.c b/consumerir/consumerir.c new file mode 100644 index 00000000..c707a5b4 --- /dev/null +++ b/consumerir/consumerir.c @@ -0,0 +1,207 @@ +/* + * Copyright (C) 2016 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. + */ + +#define LOG_TAG "ConsumerIrHal" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) +#define UNUSED __attribute__((unused)) + +#define IR_PATH "/sys/class/sec/sec_ir/ir_send" + +static int fd = 0; +static pthread_mutex_t g_mtx; + +static const consumerir_freq_range_t consumerir_freqs[] = { +#ifdef USE_ONE_FREQ_RANGE + {.min = 16000, .max = 60000}, +#else + {.min = 30000, .max = 30000}, + {.min = 33000, .max = 33000}, + {.min = 36000, .max = 36000}, + {.min = 38000, .max = 38000}, + {.min = 40000, .max = 40000}, + {.min = 56000, .max = 56000}, +#endif +}; + +static bool try_append_number(char *buffer, int *len, int size, int number) +{ + int stored; + + stored = snprintf(&buffer[*len], size - *len, "%d,", number); + + if (stored < 0 || stored >= (size - *len)) + return false; + + *len += stored; + return true; +} + +static bool grow_buffer(char **buffer, int *size) +{ + char *new_buffer; + + *size *= 2; + new_buffer = realloc(*buffer, *size); + if (new_buffer == NULL) + return false; + + *buffer = new_buffer; + return true; +} + +static bool append_number(char **buffer, int *len, int *size, int number) +{ + if (try_append_number(*buffer, len, *size, number)) + return true; + + if (!grow_buffer(buffer, size)) + return false; + + return try_append_number(*buffer, len, *size, number); +} + +static int consumerir_transmit(UNUSED struct consumerir_device *dev, + int carrier_freq, const int pattern[], int pattern_len) +{ + int buffer_len = 0; + int buffer_size = 128; + int i; + float factor; + char *buffer; + + pthread_mutex_lock(&g_mtx); + + buffer = malloc(buffer_size); + if (buffer == NULL) + return -ENOMEM; + + // Write the header + if (!append_number(&buffer, &buffer_len, &buffer_size, carrier_freq)) + goto error; + +#ifndef MS_IR_SIGNAL + // Calculate factor of conversion from microseconds to pulses + factor = 1000000 / carrier_freq; +#else + factor = 1; +#endif + + // Write out the timing pattern + for (i = 0; i < pattern_len; i++) { + if (!append_number(&buffer, &buffer_len, &buffer_size, + (int) (pattern[i] / factor))) + goto error; + } + + buffer[buffer_len - 1] = 0; + write(fd, buffer, buffer_len - 1); + + free(buffer); + + pthread_mutex_unlock(&g_mtx); + + return 0; + +error: + free(buffer); + return -ENOMEM; +} + +static int consumerir_get_carrier_freqs(struct consumerir_device *dev, + size_t len, consumerir_freq_range_t *ranges) +{ + size_t to_copy = consumerir_get_num_carrier_freqs(dev); + + to_copy = len < to_copy ? len : to_copy; + memcpy(ranges, consumerir_freqs, to_copy * sizeof(consumerir_freq_range_t)); + return to_copy; +} + +static int consumerir_close(hw_device_t *dev) +{ + free(dev); + close(fd); + pthread_mutex_destroy(&g_mtx); + return 0; +} + +static int consumerir_get_num_carrier_freqs(UNUSED struct consumerir_device *dev) +{ + return ARRAY_SIZE(consumerir_freqs); +} + +/* + * Generic device handling + */ +static int consumerir_open(const hw_module_t *module, const char *name, + hw_device_t **device) +{ + if (strcmp(name, CONSUMERIR_TRANSMITTER) != 0) + return -EINVAL; + + if (device == NULL) { + ALOGE("NULL device on open"); + return -EINVAL; + } + + consumerir_device_t *dev = malloc(sizeof(consumerir_device_t)); + memset(dev, 0, sizeof(consumerir_device_t)); + + dev->common.tag = HARDWARE_DEVICE_TAG; + dev->common.tag = HARDWARE_DEVICE_TAG; + dev->common.version = 0; + dev->common.module = (struct hw_module_t*) module; + dev->common.close = consumerir_close; + + dev->transmit = consumerir_transmit; + dev->get_carrier_freqs = consumerir_get_carrier_freqs; + dev->get_num_carrier_freqs = consumerir_get_num_carrier_freqs; + + pthread_mutex_init(&g_mtx, NULL); + + *device = (hw_device_t*) dev; + fd = open(IR_PATH, O_RDWR); + return fd; +} + +static struct hw_module_methods_t consumerir_module_methods = { + .open = consumerir_open, +}; + +consumerir_module_t HAL_MODULE_INFO_SYM = { + .common = { + .tag = HARDWARE_MODULE_TAG, + .module_api_version = CONSUMERIR_MODULE_API_VERSION_1_0, + .hal_api_version = HARDWARE_HAL_API_VERSION, + .id = CONSUMERIR_HARDWARE_MODULE_ID, + .name = "Consumer IR Module", + .author = "The CyanogenMod Project", + .methods = &consumerir_module_methods, + }, +};