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GuEe-GUIGuEe-GUI
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[DM/INPUT] Add simple drivers
1. GPIO-Key always use in poweroff/reset in OFW. 2. E3xx Button is a simple power event input device, Just two IRQs work. Signed-off-by: GuEe-GUI <[email protected]>
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‎components/drivers/input/Kconfig‎

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@@ -9,3 +9,8 @@ config RT_INPUT_POWER
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bool "Input event power"
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depends on RT_USING_INPUT
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default y
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if RT_USING_INPUT
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rsource "keyboard/Kconfig"
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rsource "misc/Kconfig"
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endif

‎components/drivers/input/keyboard/Kconfig‎

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menuconfig RT_INPUT_KEYBOARD
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bool "Keyboards"
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default n
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config RT_INPUT_KEYBOARD_GPIO
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bool "GPIO"
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depends on RT_INPUT_KEYBOARD
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depends on RT_USING_OFW
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default n
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if RT_INPUT_KEYBOARD
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osource "$(SOC_DM_INPUT_KEYBOARD_DIR)/Kconfig"
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endif

‎components/drivers/input/keyboard/SConscript‎

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from building import *
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group = []
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if not GetDepend(['RT_INPUT_KEYBOARD']):
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Return('group')
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cwd = GetCurrentDir()
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CPPPATH = [cwd + '/../../include']
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src = []
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if GetDepend(['RT_INPUT_KEYBOARD_GPIO']):
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src += ['keys-gpio.c']
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group = DefineGroup('DeviceDrivers', src, depend = [''], CPPPATH = CPPPATH)
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Return('group')

‎components/drivers/input/keyboard/keys-gpio.c‎

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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-3-08 GuEe-GUI the first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <dt-bindings/input/event-codes.h>
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#define DBG_TAG "input.keyboard.gpio"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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struct gpio_key
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{
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struct rt_input_device parent;
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rt_base_t pin;
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rt_uint8_t mode;
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rt_uint32_t code;
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};
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static void gpio_key_event(void *data)
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{
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struct gpio_key *gkey = data;
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rt_input_report_key(&gkey->parent, gkey->code, 1);
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rt_input_sync(&gkey->parent);
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rt_input_report_key(&gkey->parent, gkey->code, 0);
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rt_input_sync(&gkey->parent);
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}
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static rt_err_t ofw_append_gpio_key(struct rt_ofw_node *np)
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{
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rt_err_t err = RT_EOK;
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rt_uint32_t debounce;
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const char *propname;
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struct gpio_key *gkey = rt_calloc(1, sizeof(*gkey));
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gkey->pin = rt_ofw_get_named_pin(np, RT_NULL, 0, &gkey->mode, RT_NULL);
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if (gkey->pin < 0)
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{
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err = gkey->pin;
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goto _fail;
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}
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if ((propname = rt_ofw_get_prop_fuzzy_name(np, ",code$")) &&
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!rt_ofw_prop_read_u32(np, propname, &gkey->code))
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{
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rt_input_set_capability(&gkey->parent, EV_KEY, gkey->code);
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if (!(err = rt_input_device_register(&gkey->parent)))
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{
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err = rt_pin_attach_irq(gkey->pin, gkey->mode, gpio_key_event, gkey);
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if (err)
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{
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rt_input_device_unregister(&gkey->parent);
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goto _fail;
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}
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rt_pin_irq_enable(gkey->pin, RT_TRUE);
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}
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}
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if (err)
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{
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goto _fail;
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}
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if (!rt_ofw_prop_read_u32(np, "debounce-interval", &debounce))
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{
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rt_pin_debounce(gkey->pin, debounce);
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}
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rt_ofw_data(np) = gkey;
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return RT_EOK;
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_fail:
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rt_free(gkey);
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return err;
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}
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static rt_err_t gpio_key_probe(struct rt_platform_device *pdev)
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{
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rt_err_t err = RT_EOK;
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struct rt_ofw_node *key_np, *np = pdev->parent.ofw_node;
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#ifdef RT_USING_PINCTRL
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rt_pin_ctrl_confs_apply(&pdev->parent, 0);
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#endif
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rt_ofw_foreach_available_child_node(np, key_np)
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{
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err = ofw_append_gpio_key(key_np);
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if (err == -RT_ENOMEM)
108+
{
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rt_ofw_node_put(key_np);
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return err;
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}
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else if (err)
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{
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LOG_E("%s: create KEY fail", rt_ofw_node_full_name(key_np));
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continue;
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}
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}
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return err;
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}
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static rt_err_t gpio_key_remove(struct rt_platform_device *pdev)
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{
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struct rt_ofw_node *key_np, *np = pdev->parent.ofw_node;
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rt_ofw_foreach_available_child_node(np, key_np)
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{
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struct gpio_key *gkey = rt_ofw_data(key_np);
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if (!gkey)
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{
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continue;
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}
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rt_ofw_data(key_np) = RT_NULL;
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rt_pin_irq_enable(gkey->pin, RT_FALSE);
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rt_pin_detach_irq(gkey->pin);
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rt_input_device_unregister(&gkey->parent);
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rt_free(gkey);
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}
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return RT_EOK;
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}
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static const struct rt_ofw_node_id gpio_key_ofw_ids[] =
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{
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{ .compatible = "gpio-keys" },
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{ /* sentinel */ }
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};
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static struct rt_platform_driver gpio_key_driver =
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{
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.name = "gpio-keys",
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.ids = gpio_key_ofw_ids,
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.probe = gpio_key_probe,
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.remove = gpio_key_remove,
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};
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RT_PLATFORM_DRIVER_EXPORT(gpio_key_driver);

‎components/drivers/input/misc/Kconfig‎

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@@ -0,0 +1,12 @@
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menuconfig RT_INPUT_MISC
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bool "Misc"
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default n
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config RT_INPUT_MISC_BUTTON_E3X0
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bool "NI Ettus Research USRP E3xx Button support"
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depends on RT_INPUT_MISC
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default n
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if RT_INPUT_MISC
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osource "$(SOC_DM_INPUT_MISC_DIR)/Kconfig"
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endif

‎components/drivers/input/misc/SConscript‎

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@@ -0,0 +1,18 @@
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from building import *
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group = []
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if not GetDepend(['RT_INPUT_MISC']):
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Return('group')
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cwd = GetCurrentDir()
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CPPPATH = [cwd + '/../../include']
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src = []
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if GetDepend(['RT_INPUT_MISC_BUTTON_E3X0']):
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src += ['button-e3x0.c']
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group = DefineGroup('DeviceDrivers', src, depend = [''], CPPPATH = CPPPATH)
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Return('group')

‎components/drivers/input/misc/button-e3x0.c‎

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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-3-08 GuEe-GUI the first version
9+
*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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struct e3x0_button
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{
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struct rt_input_device parent;
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int press_irq, release_irq;
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};
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static void e3x0_button_press_isr(int irqno, void *param)
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{
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struct e3x0_button *btn = param;
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rt_input_report_key(&btn->parent, KEY_POWER, 1);
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rt_input_sync(&btn->parent);
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}
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static void e3x0_button_release_isr(int irqno, void *param)
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{
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struct e3x0_button *btn = param;
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rt_input_report_key(&btn->parent, KEY_POWER, 0);
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rt_input_sync(&btn->parent);
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}
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static rt_err_t e3x0_button_probe(struct rt_platform_device *pdev)
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{
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rt_err_t err;
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struct rt_device *dev = &pdev->parent;
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struct e3x0_button *btn = rt_calloc(1, sizeof(*btn));
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if (!btn)
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{
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return -RT_ENOMEM;
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}
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if ((btn->press_irq = rt_dm_dev_get_irq_by_name(dev, "press")) < 0)
50+
{
51+
err = btn->press_irq;
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goto _fail;
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}
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if ((btn->release_irq = rt_dm_dev_get_irq_by_name(dev, "release")) < 0)
56+
{
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err = btn->release_irq;
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goto _fail;
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}
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rt_input_set_capability(&btn->parent, EV_KEY, KEY_POWER);
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if ((err = rt_input_device_register(&btn->parent)))
64+
{
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goto _fail;
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}
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dev->user_data = btn;
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rt_hw_interrupt_install(btn->press_irq, e3x0_button_press_isr, btn, "button-e3x0-press");
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rt_hw_interrupt_umask(btn->press_irq);
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rt_hw_interrupt_install(btn->release_irq, e3x0_button_release_isr, btn, "button-e3x0-release");
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rt_hw_interrupt_umask(btn->release_irq);
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return RT_EOK;
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_fail:
79+
rt_free(btn);
80+
81+
return err;
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}
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static rt_err_t e3x0_button_remove(struct rt_platform_device *pdev)
85+
{
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struct e3x0_button *btn = pdev->parent.user_data;
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rt_hw_interrupt_mask(btn->press_irq);
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rt_pic_detach_irq(btn->press_irq, btn);
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rt_hw_interrupt_mask(btn->release_irq);
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rt_pic_detach_irq(btn->release_irq, btn);
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rt_input_device_unregister(&btn->parent);
95+
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rt_free(btn);
97+
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return RT_EOK;
99+
}
100+
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static const struct rt_ofw_node_id e3x0_button_ofw_ids[] =
102+
{
103+
{ .compatible = "ettus,e3x0-button" },
104+
{ /* sentinel */ }
105+
};
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static struct rt_platform_driver e3x0_button_driver =
108+
{
109+
.name = "e3x0-button",
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.ids = e3x0_button_ofw_ids,
111+
112+
.probe = e3x0_button_probe,
113+
.remove = e3x0_button_remove,
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};
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RT_PLATFORM_DRIVER_EXPORT(e3x0_button_driver);

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