refactor: Align drivers with Zephyr file system conventions

PR: #400

1 files changed, 148 insertions, 0 deletions

diff --git a/app/drivers/sensor/ec11/ec11.c b/app/drivers/sensor/ec11/ec11.c
new file mode 100644
index 0000000..00d0090
--- /dev/null
+++ b/app/drivers/sensor/ec11/ec11.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#define DT_DRV_COMPAT alps_ec11
+
+#include <device.h>
+#include <drivers/gpio.h>
+#include <sys/util.h>
+#include <kernel.h>
+#include <drivers/sensor.h>
+#include <sys/__assert.h>
+#include <logging/log.h>
+
+#include "ec11.h"
+
+LOG_MODULE_REGISTER(EC11, CONFIG_SENSOR_LOG_LEVEL);
+
+static int ec11_get_ab_state(struct device *dev) {
+    struct ec11_data *drv_data = dev->driver_data;
+    const struct ec11_config *drv_cfg = dev->config_info;
+
+    return (gpio_pin_get(drv_data->a, drv_cfg->a_pin) << 1) |
+           gpio_pin_get(drv_data->b, drv_cfg->b_pin);
+}
+
+static int ec11_sample_fetch(struct device *dev, enum sensor_channel chan) {
+    struct ec11_data *drv_data = dev->driver_data;
+    const struct ec11_config *drv_cfg = dev->config_info;
+    u8_t val;
+    s8_t delta;
+
+    __ASSERT_NO_MSG(chan == SENSOR_CHAN_ALL || chan == SENSOR_CHAN_ROTATION);
+
+    val = ec11_get_ab_state(dev);
+
+    LOG_DBG("prev: %d, new: %d", drv_data->ab_state, val);
+
+    switch (val | (drv_data->ab_state << 2)) {
+    case 0b0010:
+    case 0b0100:
+    case 0b1101:
+    case 0b1011:
+        delta = -1;
+        break;
+    case 0b0001:
+    case 0b0111:
+    case 0b1110:
+    case 0b1000:
+        delta = 1;
+        break;
+    default:
+        delta = 0;
+        break;
+    }
+
+    LOG_DBG("Delta: %d", delta);
+
+    drv_data->pulses += delta;
+    drv_data->ab_state = val;
+
+    drv_data->ticks = drv_data->pulses / drv_cfg->resolution;
+    drv_data->delta = delta;
+    drv_data->pulses %= drv_cfg->resolution;
+
+    return 0;
+}
+
+static int ec11_channel_get(struct device *dev, enum sensor_channel chan,
+                            struct sensor_value *val) {
+    struct ec11_data *drv_data = dev->driver_data;
+
+    if (chan != SENSOR_CHAN_ROTATION) {
+        return -ENOTSUP;
+    }
+
+    val->val1 = drv_data->ticks;
+    val->val2 = drv_data->delta;
+
+    return 0;
+}
+
+static const struct sensor_driver_api ec11_driver_api = {
+#ifdef CONFIG_EC11_TRIGGER
+    .trigger_set = ec11_trigger_set,
+#endif
+    .sample_fetch = ec11_sample_fetch,
+    .channel_get = ec11_channel_get,
+};
+
+int ec11_init(struct device *dev) {
+    struct ec11_data *drv_data = dev->driver_data;
+    const struct ec11_config *drv_cfg = dev->config_info;
+
+    LOG_DBG("A: %s %d B: %s %d resolution %d", drv_cfg->a_label, drv_cfg->a_pin, drv_cfg->b_label,
+            drv_cfg->b_pin, drv_cfg->resolution);
+
+    drv_data->a = device_get_binding(drv_cfg->a_label);
+    if (drv_data->a == NULL) {
+        LOG_ERR("Failed to get pointer to A GPIO device");
+        return -EINVAL;
+    }
+
+    drv_data->b = device_get_binding(drv_cfg->b_label);
+    if (drv_data->b == NULL) {
+        LOG_ERR("Failed to get pointer to B GPIO device");
+        return -EINVAL;
+    }
+
+    if (gpio_pin_configure(drv_data->a, drv_cfg->a_pin, drv_cfg->a_flags | GPIO_INPUT)) {
+        LOG_DBG("Failed to configure A pin");
+        return -EIO;
+    }
+
+    if (gpio_pin_configure(drv_data->b, drv_cfg->b_pin, drv_cfg->b_flags | GPIO_INPUT)) {
+        LOG_DBG("Failed to configure B pin");
+        return -EIO;
+    }
+
+#ifdef CONFIG_EC11_TRIGGER
+    if (ec11_init_interrupt(dev) < 0) {
+        LOG_DBG("Failed to initialize interrupt!");
+        return -EIO;
+    }
+#endif
+
+    drv_data->ab_state = ec11_get_ab_state(dev);
+
+    return 0;
+}
+
+#define EC11_INST(n)                                                                               \
+    struct ec11_data ec11_data_##n;                                                                \
+    const struct ec11_config ec11_cfg_##n = {                                                      \
+        .a_label = DT_INST_GPIO_LABEL(n, a_gpios),                                                 \
+        .a_pin = DT_INST_GPIO_PIN(n, a_gpios),                                                     \
+        .a_flags = DT_INST_GPIO_FLAGS(n, a_gpios),                                                 \
+        .b_label = DT_INST_GPIO_LABEL(n, b_gpios),                                                 \
+        .b_pin = DT_INST_GPIO_PIN(n, b_gpios),                                                     \
+        .b_flags = DT_INST_GPIO_FLAGS(n, b_gpios),                                                 \
+        COND_CODE_0(DT_INST_NODE_HAS_PROP(n, resolution), (1), (DT_INST_PROP(n, resolution))),     \
+    };                                                                                             \
+    DEVICE_AND_API_INIT(ec11_##n, DT_INST_LABEL(n), ec11_init, &ec11_data_##n, &ec11_cfg_##n,      \
+                        POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY, &ec11_driver_api);
+
+DT_INST_FOREACH_STATUS_OKAY(EC11_INST)
\ No newline at end of file