summaryrefslogtreecommitdiff
path: root/hw
diff options
context:
space:
mode:
Diffstat (limited to 'hw')
-rw-r--r--hw/backlight.c157
-rw-r--r--hw/shared.c129
-rw-r--r--hw/shared.h45
3 files changed, 331 insertions, 0 deletions
diff --git a/hw/backlight.c b/hw/backlight.c
new file mode 100644
index 0000000..43763ed
--- /dev/null
+++ b/hw/backlight.c
@@ -0,0 +1,157 @@
+/*
+ * device-node
+ *
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ *
+ * 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.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <linux/limits.h>
+
+#include <hw/backlight.h>
+#include "shared.h"
+
+#ifndef BACKLIGHT_PATH
+#define BACKLIGHT_PATH "/sys/class/backlight/s6e8aa0-bl"
+#endif
+
+static int get_max_brightness(int *val)
+{
+ static int max = -1;
+ int r;
+
+ if (!val)
+ return -EINVAL;
+
+ if (max < 0) {
+ r = sys_get_int(BACKLIGHT_PATH"/max_brightness", &max);
+ if (r < 0)
+ return r;
+ }
+
+ *val = max;
+ return 0;
+}
+
+static int backlight_get_brightness(int *brightness)
+{
+ int r, v;
+
+ if (!brightness) {
+ _E("wrong parameter");
+ return -EINVAL;
+ }
+
+ r = sys_get_int(BACKLIGHT_PATH"/brightness", &v);
+ if (r < 0) {
+ _E("fail to get brightness : %s", strerror(r));
+ return r;
+ }
+
+ *brightness = v;
+ return 0;
+}
+
+static int backlight_set_brightness(int brightness)
+{
+ int r, v, max;
+
+ if (brightness < 0 || brightness > 100) {
+ _E("wrong parameter");
+ return -EINVAL;
+ }
+
+ r = get_max_brightness(&max);
+ if (r < 0) {
+ _E("fail to get max brightness : %s", strerror(r));
+ return r;
+ }
+
+ v = brightness/100.f*max;
+ r = sys_set_int(BACKLIGHT_PATH"/brightness", v);
+ if (r < 0) {
+ _E("fail to set brightness : %s", strerror(r));
+ return r;
+ }
+
+ return 0;
+}
+
+static int backlight_get_mode(enum backlight_mode *mode)
+{
+ if (!mode) {
+ _E("wrong parameter");
+ return -EINVAL;
+ }
+
+ *mode = BACKLIGHT_MANUAL;
+ return 0;
+}
+
+static int backlight_set_mode(enum backlight_mode mode)
+{
+ if (mode == BACKLIGHT_SENSOR) {
+ _E("not supported option");
+ return -ENOTSUP;
+ }
+
+ return 0;
+}
+
+static int backlight_open(struct hw_info *info,
+ const char *id, struct hw_common **common)
+{
+ struct backlight_device *backlight_dev;
+
+ if (!info || !common)
+ return -EINVAL;
+
+ backlight_dev = calloc(1, sizeof(struct backlight_device));
+ if (!backlight_dev)
+ return -ENOMEM;
+
+ backlight_dev->common.info = info;
+ backlight_dev->get_brightness = backlight_get_brightness;
+ backlight_dev->set_brightness = backlight_set_brightness;
+ backlight_dev->get_mode = backlight_get_mode;
+ backlight_dev->set_mode = backlight_set_mode;
+
+ *common = (struct hw_common *)backlight_dev;
+ return 0;
+}
+
+static int backlight_close(struct hw_common *common)
+{
+ if (!common)
+ return -EINVAL;
+
+ free(common);
+ return 0;
+}
+
+EXPORT
+struct hw_info HARDWARE_INFO_SYM = {
+ .magic = HARDWARE_INFO_TAG,
+ .hal_version = HARDWARE_INFO_VERSION,
+ .device_version = BACKLIGHT_HARDWARE_DEVICE_VERSION,
+ .id = BACKLIGHT_HARDWARE_DEVICE_ID,
+ .name = "Default Backlight",
+ .author = "Jiyoung Yun <jy910.yun@samsung.com>",
+ .open = backlight_open,
+ .close = backlight_close,
+};
diff --git a/hw/shared.c b/hw/shared.c
new file mode 100644
index 0000000..b6401c1
--- /dev/null
+++ b/hw/shared.c
@@ -0,0 +1,129 @@
+/*
+ * device-node
+ *
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ *
+ * 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.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#define BUF_MAX 255
+
+static int sys_read_buf(char *file, char *buf, int len)
+{
+ int fd, r;
+
+ if (!file || !buf || len < 0)
+ return -EINVAL;
+
+ fd = open(file, O_RDONLY);
+ if (fd == -1)
+ return -ENOENT;
+
+ r = read(fd, buf, len);
+ close(fd);
+ if ((r >= 0) && (r < len))
+ buf[r] = '\0';
+ else
+ return -EIO;
+
+ return 0;
+}
+
+static int sys_write_buf(char *file, char *buf)
+{
+ int fd, r;
+
+ if (!file || !buf)
+ return -EINVAL;
+
+ fd = open(file, O_WRONLY);
+ if (fd == -1)
+ return -EPERM;
+
+ r = write(fd, buf, strlen(buf));
+ close(fd);
+ if (r < 0)
+ return -EIO;
+
+ return 0;
+}
+
+int sys_get_int(char *fname, int *val)
+{
+ char buf[BUF_MAX];
+ int r;
+
+ if (!fname || !val)
+ return -EINVAL;
+
+ r = sys_read_buf(fname, buf, sizeof(buf));
+ if (r < 0)
+ return r;
+
+ *val = atoi(buf);
+ return 0;
+}
+
+int sys_get_str(char *fname, char *str, int len)
+{
+ int r;
+
+ if (!fname || !str || len < 0)
+ return -EINVAL;
+
+ r = sys_read_buf(fname, str, len);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sys_set_int(char *fname, int val)
+{
+ char buf[BUF_MAX];
+ int r;
+
+ if (!fname)
+ return -EINVAL;
+
+ snprintf(buf, sizeof(buf), "%d", val);
+ r = sys_write_buf(fname, buf);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int sys_set_str(char *fname, char *val)
+{
+ int r;
+
+ if (!fname || !val)
+ return -EINVAL;
+
+ r = sys_write_buf(fname, val);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
diff --git a/hw/shared.h b/hw/shared.h
new file mode 100644
index 0000000..fdff1ec
--- /dev/null
+++ b/hw/shared.h
@@ -0,0 +1,45 @@
+/*
+ * libdevice-node
+ *
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ *
+ * 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.
+ */
+
+
+#ifndef __HW_DEFAULT_SHARED_H__
+#define __HW_DEFAULT_SHARED_H__
+
+#ifndef EXPORT
+#define EXPORT __attribute__ ((visibility("default")))
+#endif
+
+#define FEATURE_HARDWARE_DLOG
+#ifndef FEATURE_HARDWARE_DLOG
+#define LOG_TAG "HARDWARE"
+#include <dlog.h>
+#define _I(fmt, args...) SLOGI(fmt, ##args)
+#define _D(fmt, args...) SLOGD(fmt, ##args)
+#define _E(fmt, args...) SLOGE(fmt, ##args)
+#else
+#define _I(x, ...) do { } while (0)
+#define _D(x, ...) do { } while (0)
+#define _E(x, ...) do { } while (0)
+#endif
+
+int sys_get_int(char *fname, int *val);
+int sys_get_str(char *fname, char *str, int len);
+int sys_set_int(char *fname, int val);
+int sys_set_str(char *fname, char *val);
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 20:22:52 +0000