bsp: k230: support pinctrl driver

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>

bsp/k230/drivers/interdrv/pinctl/SConscript

@@ -0,0 +1,11 @@
+# RT-Thread building script for component
+
+from building import *
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c')
+CPPPATH = [cwd]
+
+group = DefineGroup('PINCTRL', src, depend = [], CPPPATH = CPPPATH)
+
+Return('group')

bsp/k230/drivers/interdrv/pinctl/drv_pinctrl.c

@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2006-2025 RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <rtthread.h>
+#include <ioremap.h>
+#include "board.h"
+#include "drv_pinctrl.h"
+#include <rtdbg.h>
+
+#define DBG_TAG "PINCTRL"
+#ifdef RT_DEBUG
+#define DBG_LVL DBG_LOG
+#else
+#define DBG_LVL DBG_WARNING
+#endif
+#define DBG_COLOR
+
+#define MAX_NUM_PIN 64
+
+#define IO_CFG_SEL_MASK 0x7
+#define IO_CFG_SEL_OFFSET 11
+#define IO_CFG_IE_MASK 0x1
+#define IO_CFG_IE_OFFSET 8
+#define IO_CFG_OE_MASK 0x1
+#define IO_CFG_OE_OFFSET 7
+#define IO_CFG_PU_MASK 0x1
+#define IO_CFG_PU_OFFSET 6
+#define IO_CFG_PD_MASK 0x1
+#define IO_CFG_PD_OFFSET 5
+#define IO_CFG_DRV_MASK 0xF
+#define IO_CFG_DRV_OFFSET 1
+#define IO_CFG_ST_MASK 0x1
+#define IO_CFG_ST_OFFSET 0
+
+volatile static rt_ubase_t pinctrl_base;
+
+static int check_pin(rt_uint32_t pin)
+{
+    if (pin < 0 || pin > MAX_NUM_PIN)
+    {
+        LOG_E("pin %d is not valid\n", pin);
+        return -RT_EINVAL;
+    }
+    return 0;
+}
+
+rt_inline rt_uint32_t _read32(rt_uint32_t pin)
+{
+    return HWREG32(pinctrl_base + (pin * 4));
+}
+
+rt_inline void _write32(rt_uint32_t pin, rt_uint32_t value)
+{
+    HWREG32(pinctrl_base + (pin * 4)) = value;
+}
+
+void k230_pinctrl_set_function(rt_uint32_t pin, rt_uint32_t func)
+{
+    if (check_pin(pin) != 0)
+        return;
+    if (func > IOMUX_FUNC5)
+        return;
+
+    rt_uint32_t val = _read32(pin);
+    val &= ~(IO_CFG_SEL_MASK << IO_CFG_SEL_OFFSET); /* Clear bits 11-13 */
+    /* Set bits 11-13 to the function value */
+    val |= (func << IO_CFG_SEL_OFFSET);
+    _write32(pin, val);
+}
+
+void k230_pinctrl_set_ie(rt_uint32_t pin, rt_uint32_t ie)
+{
+    if (check_pin(pin) != 0)
+        return;
+
+    rt_uint32_t val = _read32(pin);
+    if (ie)
+        val |= IO_CFG_IE_MASK << IO_CFG_IE_OFFSET;
+    else
+        val &= ~(IO_CFG_IE_MASK << IO_CFG_IE_OFFSET);
+    _write32(pin, val);
+}
+
+void k230_pinctrl_set_oe(rt_uint32_t pin, rt_uint32_t oe)
+{
+    if (check_pin(pin) != 0)
+        return;
+
+    rt_uint32_t val = _read32(pin);
+    if (oe)
+        val |= IO_CFG_OE_MASK << IO_CFG_OE_OFFSET;
+    else
+        val &= ~(IO_CFG_OE_MASK << IO_CFG_OE_OFFSET);
+    _write32(pin, val);
+}
+
+void k230_pinctrl_set_pu(rt_uint32_t pin, rt_uint32_t pu)
+{
+    if (check_pin(pin) != 0)
+        return;
+
+    rt_uint32_t val = _read32(pin);
+    if (pu)
+        val |= IO_CFG_PU_MASK << IO_CFG_PU_OFFSET;
+    else
+        val &= ~(IO_CFG_PU_MASK << IO_CFG_PU_OFFSET);
+    _write32(pin, val);
+}
+
+void k230_pinctrl_set_pd(rt_uint32_t pin, rt_uint32_t pd)
+{
+    if (check_pin(pin) != 0)
+        return;
+
+    rt_uint32_t val = _read32(pin);
+    if (pd)
+        val |= IO_CFG_PD_MASK << IO_CFG_PD_OFFSET;
+    else
+        val &= ~(IO_CFG_PD_MASK << IO_CFG_PD_OFFSET);
+    _write32(pin, val);
+}
+
+void k230_pinctrl_set_drv(rt_uint32_t pin, rt_uint32_t drv)
+{
+    if (check_pin(pin) != 0)
+        return;
+    /* FIXME: Unsupported yet */
+}
+
+void k230_pinctrl_set_st(rt_uint32_t pin, rt_uint32_t st)
+{
+    if (check_pin(pin) != 0)
+        return;
+
+    rt_uint32_t val = _read32(pin);
+    if (st)
+        val |= IO_CFG_ST_MASK << IO_CFG_ST_OFFSET;
+    else
+        val &= ~(IO_CFG_ST_MASK << IO_CFG_ST_OFFSET);
+    _write32(pin, val);
+}
+
+rt_uint32_t k230_pinctrl_get_regval(rt_uint32_t pin)
+{
+    if (check_pin(pin) != 0)
+        return 0;
+
+    return _read32(pin);
+}
+
+int k230_pinctrl_init(void)
+{
+    rt_err_t ret;
+
+    pinctrl_base = (rt_ubase_t)rt_ioremap((void *)IOMUX_BASE_ADDR, IOMUX_IO_SIZE);
+
+    return RT_EOK;
+}
+INIT_BOARD_EXPORT(k230_pinctrl_init);

bsp/k230/drivers/interdrv/pinctl/drv_pinctrl.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2006-2025 RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _DRV_PINCTRL_H_
+#define _DRV_PINCTRL_H_
+
+#include <rtthread.h>
+
+#define IOMUX_FUNC1 (rt_uint32_t)0
+#define IOMUX_FUNC2 (rt_uint32_t)1
+#define IOMUX_FUNC3 (rt_uint32_t)2
+#define IOMUX_FUNC4 (rt_uint32_t)3
+#define IOMUX_FUNC5 (rt_uint32_t)4
+void k230_pinctrl_set_function(rt_uint32_t pin, rt_uint32_t func);
+void k230_pinctrl_set_ie(rt_uint32_t pin, rt_uint32_t ie);
+void k230_pinctrl_set_oe(rt_uint32_t pin, rt_uint32_t oe);
+void k230_pinctrl_set_pu(rt_uint32_t pin, rt_uint32_t pu);
+void k230_pinctrl_set_pd(rt_uint32_t pin, rt_uint32_t pd);
+void k230_pinctrl_set_drv(rt_uint32_t pin, rt_uint32_t drv);
+void k230_pinctrl_set_st(rt_uint32_t pin, rt_uint32_t st);
+rt_uint32_t k230_pinctrl_get_regval(rt_uint32_t pin);
+
+#endif /* _DRV_PINCTRL_H_ */