[dm][input] support input #11031

3 files changed, 194 insertions, 0 deletions

diff --git a/components/drivers/input/keyboard/Kconfig b/components/drivers/input/keyboard/Kconfig
new file mode 100644
index 0000000000..6cce9d514b
--- /dev/null
+++ b/components/drivers/input/keyboard/Kconfig
@@ -0,0 +1,13 @@
+menuconfig RT_INPUT_KEYBOARD
+    bool "Keyboards"
+    default n
+
+config RT_INPUT_KEYBOARD_GPIO
+    bool "GPIO"
+    depends on RT_INPUT_KEYBOARD
+    depends on RT_USING_OFW
+    default n
+
+if RT_INPUT_KEYBOARD
+    osource "$(SOC_DM_INPUT_KEYBOARD_DIR)/Kconfig"
+endif
diff --git a/components/drivers/input/keyboard/SConscript b/components/drivers/input/keyboard/SConscript
new file mode 100644
index 0000000000..67c4713e79
--- /dev/null
+++ b/components/drivers/input/keyboard/SConscript
@@ -0,0 +1,18 @@
+from building import *
+
+group = []
+
+if not GetDepend(['RT_INPUT_KEYBOARD']):
+    Return('group')
+
+cwd = GetCurrentDir()
+CPPPATH = [cwd + '/../../include']
+
+src = []
+
+if GetDepend(['RT_INPUT_KEYBOARD_GPIO']):
+    src += ['keys-gpio.c']
+
+group = DefineGroup('DeviceDrivers', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')
diff --git a/components/drivers/input/keyboard/keys-gpio.c b/components/drivers/input/keyboard/keys-gpio.c
new file mode 100644
index 0000000000..5de974bf4a
--- /dev/null
+++ b/components/drivers/input/keyboard/keys-gpio.c
@@ -0,0 +1,163 @@
+/*
+ * 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 "input.keyboard.gpio"
+#define DBG_LVL DBG_INFO
+#include <rtdbg.h>
+
+struct gpio_key
+{
+    struct rt_input_device parent;
+
+    rt_base_t pin;
+    rt_uint8_t mode;
+    rt_uint32_t code;
+};
+
+static void gpio_key_event(void *data)
+{
+    struct gpio_key *gkey = data;
+
+    rt_input_report_key(&gkey->parent, gkey->code, 1);
+    rt_input_sync(&gkey->parent);
+
+    rt_input_report_key(&gkey->parent, gkey->code, 0);
+    rt_input_sync(&gkey->parent);
+}
+
+static rt_err_t ofw_append_gpio_key(struct rt_ofw_node *np)
+{
+    rt_err_t err = RT_EOK;
+    rt_uint32_t debounce;
+    const char *propname;
+    struct gpio_key *gkey = rt_calloc(1, sizeof(*gkey));
+
+    if (!gkey)
+    {
+        return -RT_ENOMEM;
+    }
+
+    gkey->pin = rt_ofw_get_named_pin(np, RT_NULL, 0, &gkey->mode, RT_NULL);
+
+    if (gkey->pin < 0)
+    {
+        err = gkey->pin;
+
+        goto _fail;
+    }
+
+    if ((propname = rt_ofw_get_prop_fuzzy_name(np, ",code$")) &&
+        !rt_ofw_prop_read_u32(np, propname, &gkey->code))
+    {
+        rt_input_set_capability(&gkey->parent, EV_KEY, gkey->code);
+
+        if (!(err = rt_input_device_register(&gkey->parent)))
+        {
+            err = rt_pin_attach_irq(gkey->pin, gkey->mode, gpio_key_event, gkey);
+
+            if (err)
+            {
+                rt_input_device_unregister(&gkey->parent);
+                goto _fail;
+            }
+
+            rt_pin_irq_enable(gkey->pin, RT_TRUE);
+        }
+    }
+
+    if (err)
+    {
+        goto _fail;
+    }
+
+    if (!rt_ofw_prop_read_u32(np, "debounce-interval", &debounce))
+    {
+        rt_pin_debounce(gkey->pin, debounce);
+    }
+
+    rt_ofw_data(np) = gkey;
+
+    return RT_EOK;
+
+_fail:
+    rt_free(gkey);
+
+    return err;
+}
+
+static rt_err_t gpio_key_probe(struct rt_platform_device *pdev)
+{
+    rt_err_t err = RT_EOK;
+    struct rt_ofw_node *key_np, *np = pdev->parent.ofw_node;
+
+    rt_ofw_foreach_available_child_node(np, key_np)
+    {
+        err = ofw_append_gpio_key(key_np);
+
+        if (err == -RT_ENOMEM)
+        {
+            rt_ofw_node_put(key_np);
+
+            return err;
+        }
+        else if (err)
+        {
+            LOG_E("%s: create KEY fail", rt_ofw_node_full_name(key_np));
+            continue;
+        }
+    }
+
+    return err;
+}
+
+static rt_err_t gpio_key_remove(struct rt_platform_device *pdev)
+{
+    struct rt_ofw_node *key_np, *np = pdev->parent.ofw_node;
+
+    rt_ofw_foreach_available_child_node(np, key_np)
+    {
+        struct gpio_key *gkey = rt_ofw_data(key_np);
+
+        if (!gkey)
+        {
+            continue;
+        }
+
+        rt_ofw_data(key_np) = RT_NULL;
+
+        rt_pin_irq_enable(gkey->pin, RT_FALSE);
+        rt_pin_detach_irq(gkey->pin);
+
+        rt_input_device_unregister(&gkey->parent);
+
+        rt_free(gkey);
+    }
+
+    return RT_EOK;
+}
+
+static const struct rt_ofw_node_id gpio_key_ofw_ids[] =
+{
+    { .compatible = "gpio-keys" },
+    { /* sentinel */ }
+};
+
+static struct rt_platform_driver gpio_key_driver =
+{
+    .name = "gpio-keys",
+    .ids = gpio_key_ofw_ids,
+
+    .probe = gpio_key_probe,
+    .remove = gpio_key_remove,
+};
+RT_PLATFORM_DRIVER_EXPORT(gpio_key_driver);