rtt更新

rt-thread/components/drivers/led/Kconfig

@@ -0,0 +1,15 @@
+menuconfig RT_USING_LED
+    bool "Using Light Emitting Diode (LED) device drivers"
+    depends on RT_USING_DM
+    default n
+
+config RT_LED_GPIO
+    bool "GPIO connected LEDs Support"
+    depends on RT_USING_LED
+    depends on RT_USING_PINCTRL
+    depends on RT_USING_OFW
+    default n
+
+if RT_USING_LED
+    osource "$(SOC_DM_LED_DIR)/Kconfig"
+endif

rt-thread/components/drivers/led/SConscript

@@ -0,0 +1,18 @@
+from building import *
+
+group = []
+
+if not GetDepend(['RT_USING_DM', 'RT_USING_LED']):
+    Return('group')
+
+cwd = GetCurrentDir()
+CPPPATH = [cwd + '/../include']
+
+src = ['led.c']
+
+if GetDepend(['RT_LED_GPIO']):
+    src += ['led-gpio.c']
+
+group = DefineGroup('DeviceDrivers', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')

rt-thread/components/drivers/led/led-gpio.c

@@ -0,0 +1,228 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-3-08      GuEe-GUI     the first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+
+#define DBG_TAG "led.gpio"
+#define DBG_LVL DBG_INFO
+#include <rtdbg.h>
+
+struct gpio_led
+{
+    struct rt_led_device parent;
+
+    rt_base_t pin;
+    rt_uint8_t active_val;
+};
+
+#define raw_to_gpio_led(raw) rt_container_of(raw, struct gpio_led, parent);
+
+static rt_err_t gpio_led_set_state(struct rt_led_device *led, enum rt_led_state state)
+{
+    rt_err_t err = RT_EOK;
+    struct gpio_led *gled = raw_to_gpio_led(led);
+
+    rt_pin_mode(gled->pin, PIN_MODE_OUTPUT);
+
+    switch (state)
+    {
+    case RT_LED_S_OFF:
+        rt_pin_write(gled->pin, !gled->active_val);
+        break;
+
+    case RT_LED_S_ON:
+        rt_pin_write(gled->pin, gled->active_val);
+        break;
+
+    case RT_LED_S_TOGGLE:
+        err = led->ops->get_state(led, &state);
+
+        if (!err)
+        {
+            err = led->ops->set_state(led, state == RT_LED_S_OFF ? RT_LED_S_ON : RT_LED_S_OFF);
+        }
+        break;
+
+    default:
+        return -RT_ENOSYS;
+    }
+
+    return err;
+}
+
+static rt_err_t gpio_led_get_state(struct rt_led_device *led, enum rt_led_state *out_state)
+{
+    struct gpio_led *gled = raw_to_gpio_led(led);
+
+    switch (rt_pin_read(gled->pin))
+    {
+    case PIN_LOW:
+        *out_state = RT_LED_S_OFF;
+        break;
+
+    case PIN_HIGH:
+        *out_state = RT_LED_S_ON;
+        break;
+
+    default:
+        return -RT_ERROR;
+    }
+
+    return RT_EOK;
+}
+
+const static struct rt_led_ops gpio_led_ops =
+{
+    .set_state = gpio_led_set_state,
+    .get_state = gpio_led_get_state,
+};
+
+static rt_err_t ofw_append_gpio_led(struct rt_ofw_node *np)
+{
+    rt_err_t err;
+    enum rt_led_state led_state = RT_LED_S_OFF;
+    const char *propname, *state, *trigger;
+    struct gpio_led *gled = rt_malloc(sizeof(*gled));
+
+    if (!gled)
+    {
+        return -RT_ENOMEM;
+    }
+
+    gled->pin = rt_ofw_get_named_pin(np, RT_NULL, 0, RT_NULL, &gled->active_val);
+
+    if (gled->pin < 0)
+    {
+        err = gled->pin;
+
+        goto _fail;
+    }
+
+    gled->parent.ops = &gpio_led_ops;
+
+    if ((err = rt_hw_led_register(&gled->parent)))
+    {
+        goto _fail;
+    }
+
+    if (!rt_ofw_prop_read_string(np, "default-state", &state))
+    {
+        if (!rt_strcmp(state, "on"))
+        {
+            led_state = RT_LED_S_ON;
+        }
+    }
+
+    if ((propname = rt_ofw_get_prop_fuzzy_name(np, "default-trigger$")))
+    {
+        if (!rt_ofw_prop_read_string(np, propname, &trigger))
+        {
+            if (!rt_strcmp(trigger, "heartbeat") ||
+                !rt_strcmp(trigger, "timer"))
+            {
+                led_state = RT_LED_S_BLINK;
+            }
+        }
+    }
+
+    rt_led_set_state(&gled->parent, led_state);
+
+    rt_ofw_data(np) = &gled->parent;
+
+    return RT_EOK;
+
+_fail:
+    rt_free(gled);
+
+    return err;
+}
+
+static rt_err_t gpio_led_probe(struct rt_platform_device *pdev)
+{
+    rt_bool_t pinctrl_apply = RT_FALSE;
+    struct rt_ofw_node *led_np, *np = pdev->parent.ofw_node;
+
+    if (rt_ofw_prop_read_bool(np, "pinctrl-0"))
+    {
+        pinctrl_apply = RT_TRUE;
+        rt_pin_ctrl_confs_apply_by_name(&pdev->parent, RT_NULL);
+    }
+
+    rt_ofw_foreach_available_child_node(np, led_np)
+    {
+        rt_err_t err = ofw_append_gpio_led(led_np);
+
+        if (err == -RT_ENOMEM)
+        {
+            rt_ofw_node_put(led_np);
+
+            return err;
+        }
+        else if (err)
+        {
+            LOG_E("%s: create LED fail", rt_ofw_node_full_name(led_np));
+            continue;
+        }
+
+        if (!pinctrl_apply)
+        {
+            struct rt_device dev_tmp;
+
+            dev_tmp.ofw_node = led_np;
+            rt_pin_ctrl_confs_apply_by_name(&dev_tmp, RT_NULL);
+        }
+    }
+
+    return RT_EOK;
+}
+
+static rt_err_t gpio_led_remove(struct rt_platform_device *pdev)
+{
+    struct gpio_led *gled;
+    struct rt_led_device *led_dev;
+    struct rt_ofw_node *led_np, *np = pdev->parent.ofw_node;
+
+    rt_ofw_foreach_available_child_node(np, led_np)
+    {
+        led_dev = rt_ofw_data(led_np);
+
+        if (!led_dev)
+        {
+            continue;
+        }
+
+        gled = rt_container_of(led_dev, struct gpio_led, parent);
+
+        rt_ofw_data(led_np) = RT_NULL;
+
+        rt_hw_led_unregister(&gled->parent);
+
+        rt_free(gled);
+    }
+
+    return RT_EOK;
+}
+
+static const struct rt_ofw_node_id gpio_led_ofw_ids[] =
+{
+    { .compatible = "gpio-leds" },
+    { /* sentinel */ }
+};
+
+static struct rt_platform_driver gpio_led_driver =
+{
+    .name = "led-gpio",
+    .ids = gpio_led_ofw_ids,
+
+    .probe = gpio_led_probe,
+    .remove = gpio_led_remove,
+};
+RT_PLATFORM_DRIVER_EXPORT(gpio_led_driver);

rt-thread/components/drivers/led/led.c

@@ -0,0 +1,349 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-3-08      GuEe-GUI     the first version
+ */
+
+#include <rtthread.h>
+
+#define DBG_TAG "rtdm.led"
+#define DBG_LVL DBG_INFO
+#include <rtdbg.h>
+
+#include <drivers/led.h>
+#include <drivers/core/dm.h>
+
+struct blink_timer
+{
+    rt_bool_t toggle;
+    rt_bool_t enabled;
+    struct rt_timer timer;
+};
+
+static struct rt_dm_ida led_ida = RT_DM_IDA_INIT(LED);
+
+static const char * const _led_states[] =
+{
+    [RT_LED_S_OFF] = "off",
+    [RT_LED_S_ON] = "on",
+    [RT_LED_S_TOGGLE] = "toggle",
+    [RT_LED_S_BLINK] = "blink",
+};
+
+static rt_ssize_t _led_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
+{
+    rt_ssize_t res;
+    rt_size_t state_len;
+    enum rt_led_state state;
+    struct rt_led_device *led = rt_container_of(dev, struct rt_led_device, parent);
+
+    if ((res = rt_led_get_state(led, &state)))
+    {
+        return res;
+    }
+
+    state_len = rt_strlen(_led_states[state]);
+
+    if (pos < state_len)
+    {
+        size = rt_min_t(rt_size_t, size, size - pos);
+        ((char *)buffer)[size - 1] = '\0';
+        rt_strncpy(buffer, &_led_states[state][pos], size);
+
+        return size;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
+static rt_ssize_t _led_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
+{
+    rt_uint32_t brightness = 0;
+    const char *value = buffer;
+    struct rt_led_device *led = rt_container_of(dev, struct rt_led_device, parent);
+
+    for (int i = 0; i < RT_ARRAY_SIZE(_led_states); ++i)
+    {
+        if (!rt_strncpy((char *)_led_states[i], buffer, size))
+        {
+            return rt_led_set_state(led, i) ? : size;
+        }
+    }
+
+    while (*value)
+    {
+        if (*value < '0' || *value > '9')
+        {
+            return -RT_EINVAL;
+        }
+
+        brightness *= 10;
+        brightness += *value - '0';
+
+        ++value;
+    }
+
+    rt_led_set_brightness(led, brightness);
+
+    return size;
+}
+
+#ifdef RT_USING_DEVICE_OPS
+const static struct rt_device_ops _led_ops =
+{
+    .read = _led_read,
+    .write = _led_write,
+};
+#endif
+
+static void _led_blink_timerout(void *param)
+{
+    struct rt_led_device *led = param;
+    struct blink_timer *btimer = led->sysdata;
+
+    if (btimer->toggle)
+    {
+        led->ops->set_state(led, RT_LED_S_OFF);
+    }
+    else
+    {
+        led->ops->set_state(led, RT_LED_S_ON);
+    }
+
+    btimer->toggle = !btimer->toggle;
+}
+
+rt_err_t rt_hw_led_register(struct rt_led_device *led)
+{
+    rt_err_t err;
+    int device_id;
+    const char *dev_name;
+    struct blink_timer *btimer = RT_NULL;
+
+    if (!led || !led->ops)
+    {
+        return -RT_EINVAL;
+    }
+
+    if ((device_id = rt_dm_ida_alloc(&led_ida)) < 0)
+    {
+        return -RT_EFULL;
+    }
+
+    rt_dm_dev_set_name(&led->parent, "led%u", device_id);
+    dev_name = rt_dm_dev_get_name(&led->parent);
+
+    led->sysdata = RT_NULL;
+    rt_spin_lock_init(&led->spinlock);
+
+    if (!led->ops->set_period && led->ops->set_state)
+    {
+        btimer = rt_malloc(sizeof(*btimer));
+
+        if (!btimer)
+        {
+            LOG_E("%s create blink timer failed", dev_name);
+
+            err = -RT_ENOMEM;
+            goto _fail;
+        }
+
+        led->sysdata = btimer;
+
+        btimer->toggle = RT_FALSE;
+        btimer->enabled = RT_FALSE;
+        rt_timer_init(&btimer->timer, dev_name, _led_blink_timerout, led,
+                rt_tick_from_millisecond(500), RT_TIMER_FLAG_PERIODIC);
+    }
+
+    led->parent.type = RT_Device_Class_Char;
+#ifdef RT_USING_DEVICE_OPS
+    led->parent.ops = &_led_ops;
+#else
+    led->parent.read = _led_read;
+    led->parent.write = _led_write;
+#endif
+    led->parent.master_id = led_ida.master_id;
+    led->parent.device_id = device_id;
+
+    if ((err = rt_device_register(&led->parent, dev_name, RT_DEVICE_FLAG_RDWR)))
+    {
+        goto _fail;
+    }
+
+    return RT_EOK;
+
+_fail:
+    rt_dm_ida_free(&led_ida, device_id);
+
+    if (btimer)
+    {
+        rt_timer_detach(&btimer->timer);
+        rt_free(btimer);
+
+        led->sysdata = RT_NULL;
+    }
+
+    return err;
+}
+
+rt_err_t rt_hw_led_unregister(struct rt_led_device *led)
+{
+    if (!led)
+    {
+        return -RT_EINVAL;
+    }
+
+    rt_led_set_state(led, RT_LED_S_OFF);
+
+    if (led->sysdata)
+    {
+        struct blink_timer *btimer = led->sysdata;
+
+        rt_timer_detach(&btimer->timer);
+
+        rt_free(btimer);
+    }
+
+    rt_dm_ida_free(&led_ida, led->parent.device_id);
+
+    rt_device_unregister(&led->parent);
+
+    return RT_EOK;
+}
+
+rt_err_t rt_led_set_state(struct rt_led_device *led, enum rt_led_state state)
+{
+    rt_err_t err;
+    struct blink_timer *btimer;
+
+    if (!led)
+    {
+        return -RT_EINVAL;
+    }
+
+    if (!led->ops->set_state)
+    {
+        return -RT_ENOSYS;
+    }
+
+    rt_spin_lock(&led->spinlock);
+
+    btimer = led->sysdata;
+
+    if (btimer && btimer->enabled)
+    {
+        rt_timer_stop(&btimer->timer);
+    }
+
+    err = led->ops->set_state(led, state);
+
+    if (state == RT_LED_S_BLINK)
+    {
+        if (err == -RT_ENOSYS && btimer && !btimer->enabled)
+        {
+            btimer->enabled = RT_TRUE;
+            rt_timer_start(&btimer->timer);
+        }
+    }
+    else if (btimer && btimer->enabled)
+    {
+        if (err)
+        {
+            rt_timer_start(&btimer->timer);
+        }
+        else
+        {
+            btimer->enabled = RT_FALSE;
+        }
+    }
+
+    rt_spin_unlock(&led->spinlock);
+
+    return err;
+}
+
+rt_err_t rt_led_get_state(struct rt_led_device *led, enum rt_led_state *out_state)
+{
+    rt_err_t err;
+
+    if (!led || !out_state)
+    {
+        return -RT_EINVAL;
+    }
+
+    if (!led->ops->get_state)
+    {
+        return -RT_ENOSYS;
+    }
+
+    rt_spin_lock(&led->spinlock);
+
+    err = led->ops->get_state(led, out_state);
+
+    rt_spin_unlock(&led->spinlock);
+
+    return err;
+}
+
+rt_err_t rt_led_set_period(struct rt_led_device *led, rt_uint32_t period_ms)
+{
+    rt_err_t err;
+
+    if (!led)
+    {
+        return -RT_EINVAL;
+    }
+
+    if (!led->ops->set_period && !led->sysdata)
+    {
+        return -RT_ENOSYS;
+    }
+
+    rt_spin_lock(&led->spinlock);
+
+    if (led->ops->set_period)
+    {
+        err = led->ops->set_period(led, period_ms);
+    }
+    else
+    {
+        struct blink_timer *btimer = led->sysdata;
+        rt_tick_t tick = rt_tick_from_millisecond(period_ms);
+
+        err = rt_timer_control(&btimer->timer, RT_TIMER_CTRL_SET_TIME, &tick);
+    }
+
+    rt_spin_unlock(&led->spinlock);
+
+    return err;
+}
+
+rt_err_t rt_led_set_brightness(struct rt_led_device *led, rt_uint32_t brightness)
+{
+    rt_err_t err;
+
+    if (!led)
+    {
+        return -RT_EINVAL;
+    }
+
+    if (!led->ops->set_brightness)
+    {
+        return -RT_ENOSYS;
+    }
+
+    rt_spin_lock(&led->spinlock);
+
+    err = led->ops->set_brightness(led, brightness);
+
+    rt_spin_unlock(&led->spinlock);
+
+    return err;
+}