--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include <dm/device_compat.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+
+#include "pinctrl-mtmips-common.h"
+
+#define SYSC_MAP_SIZE 0x100
+
+#define PAD_UART1_GPIO0_OFS 0x00
+#define PAD_UART3_I2C_OFS 0x04
+#define PAD_UART2_JTAG_OFS 0x08
+#define PAD_PERST_WDT_OFS 0x0c
+#define PAD_RGMII2_MDIO_OFS 0x10
+#define PAD_SDXC_SPI_OFS 0x14
+#define GPIOMODE_OFS 0x18
+#define PAD_BOPT_ESWINT_OFS 0x28
+
+#define ESWINT_SHIFT 20
+#define SDXC_SHIFT 18
+#define SPI_SHIFT 16
+#define RGMII2_SHIFT 15
+#define RGMII1_SHIFT 14
+#define MDIO_SHIFT 12
+#define PERST_SHIFT 10
+#define WDT_SHIFT 8
+#define JTAG_SHIFT 7
+#define UART2_SHIFT 5
+#define UART3_SHIFT 3
+#define I2C_SHIFT 2
+#define UART1_SHIFT 1
+#define GPIO0_SHIFT 0 /* Dummy */
+
+#define GM4_MASK 3
+
+#define E4_E2_M 0x03
+#define E4_E2_S 4
+#define PULL_UP BIT(3)
+#define PULL_DOWN BIT(2)
+#define SMT BIT(1)
+#define SR BIT(0)
+
+struct mt7621_pinctrl_priv {
+ struct mtmips_pinctrl_priv mp;
+};
+
+#if CONFIG_IS_ENABLED(PINMUX)
+static const struct mtmips_pmx_func esw_int_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("esw int", 0),
+};
+
+static const struct mtmips_pmx_func sdxc_grp[] = {
+ FUNC("nand", 2),
+ FUNC("gpio", 1),
+ FUNC("sdxc", 0),
+};
+
+static const struct mtmips_pmx_func spi_grp[] = {
+ FUNC("nand", 2),
+ FUNC("gpio", 1),
+ FUNC("spi", 0),
+};
+
+static const struct mtmips_pmx_func rgmii2_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("rgmii", 0),
+};
+
+static const struct mtmips_pmx_func rgmii1_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("rgmii", 0),
+};
+
+static const struct mtmips_pmx_func mdio_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("mdio", 0),
+};
+
+static const struct mtmips_pmx_func perst_grp[] = {
+ FUNC("refclk", 2),
+ FUNC("gpio", 1),
+ FUNC("pcie reset", 0),
+};
+
+static const struct mtmips_pmx_func wdt_grp[] = {
+ FUNC("refclk", 2),
+ FUNC("gpio", 1),
+ FUNC("wdt rst", 0),
+};
+
+static const struct mtmips_pmx_func jtag_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("jtag", 0),
+};
+
+static const struct mtmips_pmx_func uart2_grp[] = {
+ FUNC("spdif", 3),
+ FUNC("pcm", 2),
+ FUNC("gpio", 1),
+ FUNC("uart", 0),
+};
+
+static const struct mtmips_pmx_func uart3_grp[] = {
+ FUNC("spdif", 3),
+ FUNC("i2s", 2),
+ FUNC("gpio", 1),
+ FUNC("uart", 0),
+};
+
+static const struct mtmips_pmx_func i2c_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("i2c", 0),
+};
+
+static const struct mtmips_pmx_func uart1_grp[] = {
+ FUNC("gpio", 1),
+ FUNC("uart", 0),
+};
+
+static const struct mtmips_pmx_func gpio0_grp[] = {
+ FUNC("gpio", 0),
+};
+
+static const struct mtmips_pmx_group mt7621_pmx_data[] = {
+ GRP_PCONF("esw int", esw_int_grp, GPIOMODE_OFS, ESWINT_SHIFT, 1,
+ PAD_BOPT_ESWINT_OFS, 0),
+ GRP_PCONF("sdxc", sdxc_grp, GPIOMODE_OFS, SDXC_SHIFT, GM4_MASK,
+ PAD_SDXC_SPI_OFS, 16),
+ GRP_PCONF("spi", spi_grp, GPIOMODE_OFS, SPI_SHIFT, GM4_MASK,
+ PAD_SDXC_SPI_OFS, 0),
+ GRP_PCONF("rgmii2", rgmii2_grp, GPIOMODE_OFS, RGMII2_SHIFT, 1,
+ PAD_RGMII2_MDIO_OFS, 16),
+ GRP("rgmii1", rgmii1_grp, GPIOMODE_OFS, RGMII1_SHIFT, 1),
+ GRP_PCONF("mdio", mdio_grp, GPIOMODE_OFS, MDIO_SHIFT, GM4_MASK,
+ PAD_RGMII2_MDIO_OFS, 0),
+ GRP_PCONF("pcie reset", perst_grp, GPIOMODE_OFS, PERST_SHIFT, GM4_MASK,
+ PAD_PERST_WDT_OFS, 16),
+ GRP_PCONF("wdt", wdt_grp, GPIOMODE_OFS, WDT_SHIFT, GM4_MASK,
+ PAD_PERST_WDT_OFS, 0),
+ GRP_PCONF("jtag", jtag_grp, GPIOMODE_OFS, JTAG_SHIFT, 1,
+ PAD_UART2_JTAG_OFS, 16),
+ GRP_PCONF("uart2", uart2_grp, GPIOMODE_OFS, UART2_SHIFT, GM4_MASK,
+ PAD_UART2_JTAG_OFS, 0),
+ GRP_PCONF("uart3", uart3_grp, GPIOMODE_OFS, UART3_SHIFT, GM4_MASK,
+ PAD_UART3_I2C_OFS, 16),
+ GRP_PCONF("i2c", i2c_grp, GPIOMODE_OFS, I2C_SHIFT, 1,
+ PAD_UART3_I2C_OFS, 0),
+ GRP_PCONF("uart1", uart1_grp, GPIOMODE_OFS, UART1_SHIFT, 1,
+ PAD_UART1_GPIO0_OFS, 16),
+ GRP_PCONF("gpio0", gpio0_grp, GPIOMODE_OFS, GPIO0_SHIFT, 1,
+ PAD_UART1_GPIO0_OFS, 0),
+};
+
+static int mt7621_get_groups_count(struct udevice *dev)
+{
+ return ARRAY_SIZE(mt7621_pmx_data);
+}
+
+static const char *mt7621_get_group_name(struct udevice *dev,
+ unsigned int selector)
+{
+ return mt7621_pmx_data[selector].name;
+}
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+
+#if CONFIG_IS_ENABLED(PINCONF)
+static const struct pinconf_param mt7621_conf_params[] = {
+ { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
+ { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
+ { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
+ { "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 },
+ { "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 },
+ { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
+ { "slew-rate", PIN_CONFIG_SLEW_RATE, 0 },
+};
+
+static const u32 mt7621_pconf_drv_strength_tbl[] = {2, 4, 6, 8};
+
+static int mt7621_pinconf_group_set(struct udevice *dev,
+ unsigned int group_selector,
+ unsigned int param, unsigned int arg)
+{
+ struct mt7621_pinctrl_priv *priv = dev_get_priv(dev);
+ const struct mtmips_pmx_group *grp = &mt7621_pmx_data[group_selector];
+ u32 clr = 0, set = 0;
+ int i;
+
+ if (!grp->pconf_avail)
+ return 0;
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ clr = PULL_UP | PULL_DOWN;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_UP:
+ clr = PULL_DOWN;
+ set = PULL_UP;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ clr = PULL_UP;
+ set = PULL_DOWN;
+ break;
+
+ case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+ if (arg)
+ set = SMT;
+ else
+ clr = SMT;
+ break;
+
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ for (i = 0; i < ARRAY_SIZE(mt7621_pconf_drv_strength_tbl); i++)
+ if (mt7621_pconf_drv_strength_tbl[i] == arg)
+ break;
+
+ if (i >= ARRAY_SIZE(mt7621_pconf_drv_strength_tbl))
+ return -EINVAL;
+
+ clr = E4_E2_M << E4_E2_S;
+ set = i << E4_E2_S;
+ break;
+
+ case PIN_CONFIG_SLEW_RATE:
+ if (arg)
+ set = SR;
+ else
+ clr = SR;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ mtmips_pinctrl_reg_set(&priv->mp, grp->pconf_reg, grp->pconf_shift,
+ clr, set);
+
+ return 0;
+}
+#endif
+
+static int mt7621_pinctrl_probe(struct udevice *dev)
+{
+ struct mt7621_pinctrl_priv *priv = dev_get_priv(dev);
+ int ret = 0;
+
+#if CONFIG_IS_ENABLED(PINMUX)
+ ret = mtmips_pinctrl_probe(&priv->mp, ARRAY_SIZE(mt7621_pmx_data),
+ mt7621_pmx_data);
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+
+ return ret;
+}
+
+static int mt7621_pinctrl_of_to_plat(struct udevice *dev)
+{
+ struct mt7621_pinctrl_priv *priv = dev_get_priv(dev);
+
+ priv->mp.base = (void __iomem *)dev_remap_addr_index(dev, 0);
+
+ if (!priv->mp.base)
+ return -EINVAL;
+
+ return 0;
+}
+
+static const struct pinctrl_ops mt7621_pinctrl_ops = {
+#if CONFIG_IS_ENABLED(PINMUX)
+ .get_groups_count = mt7621_get_groups_count,
+ .get_group_name = mt7621_get_group_name,
+ .get_functions_count = mtmips_get_functions_count,
+ .get_function_name = mtmips_get_function_name,
+ .pinmux_group_set = mtmips_pinmux_group_set,
+#endif /* CONFIG_IS_ENABLED(PINMUX) */
+#if CONFIG_IS_ENABLED(PINCONF)
+ .pinconf_num_params = ARRAY_SIZE(mt7621_conf_params),
+ .pinconf_params = mt7621_conf_params,
+ .pinconf_group_set = mt7621_pinconf_group_set,
+#endif /* CONFIG_IS_ENABLED(PINCONF) */
+ .set_state = pinctrl_generic_set_state,
+};
+
+static const struct udevice_id mt7621_pinctrl_ids[] = {
+ { .compatible = "mediatek,mt7621-pinctrl" },
+ { }
+};
+
+U_BOOT_DRIVER(mt7621_pinctrl) = {
+ .name = "mt7621-pinctrl",
+ .id = UCLASS_PINCTRL,
+ .of_match = mt7621_pinctrl_ids,
+ .of_to_plat = mt7621_pinctrl_of_to_plat,
+ .ops = &mt7621_pinctrl_ops,
+ .probe = mt7621_pinctrl_probe,
+ .priv_auto = sizeof(struct mt7621_pinctrl_priv),
+};
projects / platform / kernel / u-boot.git / commitdiff