[PATCH v5 2/3] pinctrl: spacemit: add support for SpacemiT K1 SoC
Yixun Lan
dlan at gentoo.org
Tue Oct 15 17:59:42 PDT 2024
SpacemiT's K1 SoC has a pinctrl controller which use single register
to describe all functions, which include bias pull up/down(strong pull),
drive strength, schmitter trigger, slew rate, mux mode.
Signed-off-by: Yixun Lan <dlan at gentoo.org>
---
drivers/pinctrl/Kconfig | 1 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/spacemit/Kconfig | 17 +
drivers/pinctrl/spacemit/Makefile | 3 +
drivers/pinctrl/spacemit/pinctrl-k1.c | 1051 +++++++++++++++++++++++++++++++++
drivers/pinctrl/spacemit/pinctrl-k1.h | 40 ++
6 files changed, 1113 insertions(+)
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 354536de564b67528204ec8a3c1e6dd8e173e08f..167a9857df8d1a11818988039526d16fb8e40e37 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -606,6 +606,7 @@ source "drivers/pinctrl/realtek/Kconfig"
source "drivers/pinctrl/renesas/Kconfig"
source "drivers/pinctrl/samsung/Kconfig"
source "drivers/pinctrl/sophgo/Kconfig"
+source "drivers/pinctrl/spacemit/Kconfig"
source "drivers/pinctrl/spear/Kconfig"
source "drivers/pinctrl/sprd/Kconfig"
source "drivers/pinctrl/starfive/Kconfig"
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 97823f52b972a36b359c30f50849330c2ad61f62..1b3417ea3f912ef33cbf003b73caa3624a91d600 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -76,6 +76,7 @@ obj-$(CONFIG_ARCH_REALTEK) += realtek/
obj-$(CONFIG_PINCTRL_RENESAS) += renesas/
obj-$(CONFIG_PINCTRL_SAMSUNG) += samsung/
obj-y += sophgo/
+obj-y += spacemit/
obj-$(CONFIG_PINCTRL_SPEAR) += spear/
obj-y += sprd/
obj-$(CONFIG_SOC_STARFIVE) += starfive/
diff --git a/drivers/pinctrl/spacemit/Kconfig b/drivers/pinctrl/spacemit/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..168f8a5ffbb952cbeae3e3401c11149558e0a84b
--- /dev/null
+++ b/drivers/pinctrl/spacemit/Kconfig
@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Sophgo SoC PINCTRL drivers
+#
+
+config PINCTRL_SPACEMIT_K1
+ tristate "SpacemiT K1 SoC Pinctrl driver"
+ depends on ARCH_SPACEMIT || COMPILE_TEST
+ depends on OF
+ select GENERIC_PINCTRL_GROUPS
+ select GENERIC_PINMUX_FUNCTIONS
+ select GENERIC_PINCONF
+ help
+ Say Y to select the pinctrl driver for K1 SoC.
+ This pin controller allows selecting the mux function for
+ each pin. This driver can also be built as a module called
+ pinctrl-k1.
diff --git a/drivers/pinctrl/spacemit/Makefile b/drivers/pinctrl/spacemit/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..fede1e80fe0ff0dfec08e386b72a5f43ea384704
--- /dev/null
+++ b/drivers/pinctrl/spacemit/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_PINCTRL_SPACEMIT_K1) += pinctrl-k1.o
diff --git a/drivers/pinctrl/spacemit/pinctrl-k1.c b/drivers/pinctrl/spacemit/pinctrl-k1.c
new file mode 100644
index 0000000000000000000000000000000000000000..c75ea27b2344697927ac01f205e64ac7c4f6ce49
--- /dev/null
+++ b/drivers/pinctrl/spacemit/pinctrl-k1.c
@@ -0,0 +1,1051 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2024 Yixun Lan <dlan at gentoo.org> */
+
+#include <linux/bits.h>
+#include <linux/cleanup.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
+
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+
+#include "../core.h"
+#include "../pinctrl-utils.h"
+#include "../pinconf.h"
+#include "../pinmux.h"
+#include "pinctrl-k1.h"
+
+/*
+ * +---------+----------+-----------+--------+--------+----------+--------+
+ * | pull | drive | schmitter | slew | edge | strong | mux |
+ * | up/down | strength | trigger | rate | detect | pull | mode |
+ * +---------+----------+-----------+--------+--------+----------+--------+
+ * 3 bits 3 bits 2 bits 1 bit 3 bits 1 bit 3 bits
+ */
+
+#define PAD_MUX GENMASK(2, 0)
+#define PAD_STRONG_PULL BIT(3)
+#define PAD_EDGE_RISE BIT(4)
+#define PAD_EDGE_FALL BIT(5)
+#define PAD_EDGE_CLEAR BIT(6)
+#define PAD_SLEW_RATE GENMASK(12, 11)
+#define PAD_SLEW_RATE_EN BIT(7)
+#define PAD_SCHMITT GENMASK(9, 8)
+#define PAD_DRIVE GENMASK(12, 10)
+#define PAD_PULLDOWN BIT(13)
+#define PAD_PULLUP BIT(14)
+#define PAD_PULL_EN BIT(15)
+
+struct spacemit_pin {
+ u16 pin;
+ u16 flags;
+ u8 gpiofunc;
+};
+
+struct spacemit_pinctrl {
+ struct device *dev;
+ struct pinctrl_dev *pctl_dev;
+ const struct spacemit_pinctrl_data *data;
+ struct pinctrl_desc pdesc;
+
+ struct mutex mutex;
+ raw_spinlock_t lock;
+
+ void __iomem *regs;
+};
+
+struct spacemit_pinctrl_data {
+ const struct pinctrl_pin_desc *pins;
+ const struct spacemit_pin *data;
+ u16 npins;
+};
+
+struct spacemit_pin_mux_config {
+ const struct spacemit_pin *pin;
+ u32 config;
+};
+
+struct spacemit_pin_drv_strength {
+ u8 val;
+ u32 mA;
+};
+
+/* map pin id to pinctrl register offset, refer MFPR definition */
+static unsigned int spacemit_pin_to_offset(unsigned int pin)
+{
+ unsigned int offset = 0;
+
+ switch (pin) {
+ case 0 ... 85:
+ offset = pin + 1;
+ break;
+ case 86 ... 92:
+ offset = pin + 37;
+ break;
+ case 93 ... 97:
+ offset = pin + 24;
+ break;
+ case 98:
+ offset = 93;
+ break;
+ case 99:
+ offset = 92;
+ break;
+ case 100:
+ offset = 91;
+ break;
+ case 101:
+ offset = 90;
+ break;
+ case 102:
+ offset = 95;
+ break;
+ case 103:
+ offset = 94;
+ break;
+ case 104 ... 110:
+ offset = pin + 6;
+ break;
+ case 111 ... 127:
+ offset = pin + 20;
+ break;
+ default:
+ break;
+ }
+
+ return offset << 2;
+}
+
+static inline void __iomem *spacemit_pin_to_reg(struct spacemit_pinctrl *pctrl,
+ unsigned int pin)
+{
+ return pctrl->regs + spacemit_pin_to_offset(pin);
+}
+
+static u16 spacemit_dt_get_pin(u32 value)
+{
+ return value >> 16;
+}
+
+static u16 spacemit_dt_get_pin_mux(u32 value)
+{
+ return value & GENMASK(15, 0);
+}
+
+static const struct spacemit_pin *spacemit_get_pin(struct spacemit_pinctrl *pctrl,
+ unsigned long pin)
+{
+ const struct spacemit_pin *pdata = pctrl->data->data;
+ int i;
+
+ for (i = 0; i < pctrl->data->npins; i++) {
+ if (pin == pdata[i].pin)
+ return &pdata[i];
+ }
+
+ return NULL;
+}
+
+static inline enum spacemit_pin_io_type spacemit_to_pin_io_type(
+ const struct spacemit_pin *pin)
+{
+ return K1_PIN_GET_IO_TYPE(pin->flags);
+}
+
+/* External: IO voltage via external source, can be 1.8V or 3.3V */
+static const char * const io_type_desc[] = {
+ "None",
+ "Fixed/1V8",
+ "Fixed/3V3",
+ "External",
+};
+
+static void spacemit_pctrl_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *seq, unsigned int pin)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);
+ enum spacemit_pin_io_type type = spacemit_to_pin_io_type(spin);
+ void __iomem *reg;
+ u32 value;
+
+ seq_printf(seq, "offset: 0x%04x ", spacemit_pin_to_offset(pin));
+ seq_printf(seq, "type: %s ", io_type_desc[type]);
+
+ reg = spacemit_pin_to_reg(pctrl, pin);
+ value = readl(reg);
+ seq_printf(seq, "mux: %ld reg: 0x%04x", (value & PAD_MUX), value);
+}
+
+/* use IO high level output current as the table */
+static struct spacemit_pin_drv_strength spacemit_ds_1v8_tbl[4] = {
+ { 0, 11 },
+ { 2, 21 },
+ { 4, 32 },
+ { 6, 42 },
+};
+
+static struct spacemit_pin_drv_strength spacemit_ds_3v3_tbl[8] = {
+ { 0, 7 },
+ { 2, 10 },
+ { 4, 13 },
+ { 6, 16 },
+ { 1, 19 },
+ { 3, 23 },
+ { 5, 26 },
+ { 7, 29 },
+};
+
+static inline u8 spacemit_get_ds_value(struct spacemit_pin_drv_strength *tbl,
+ u32 num, u32 mA)
+{
+ int i;
+
+ for (i = 0; i < num; i++)
+ if (mA <= tbl[i].mA)
+ return tbl[i].val;
+
+ return tbl[num - 1].val;
+}
+
+static inline u32 spacemit_get_ds_mA(struct spacemit_pin_drv_strength *tbl,
+ u32 num, u32 val)
+{
+ int i;
+
+ for (i = 0; i < num; i++)
+ if (val == tbl[i].val)
+ return tbl[i].mA;
+
+ return 0;
+}
+
+static inline u8 spacemit_get_driver_strength(enum spacemit_pin_io_type type,
+ u32 mA)
+{
+ switch (type) {
+ case IO_TYPE_1V8:
+ return spacemit_get_ds_value(spacemit_ds_1v8_tbl,
+ ARRAY_SIZE(spacemit_ds_1v8_tbl),
+ mA);
+ case IO_TYPE_3V3:
+ return spacemit_get_ds_value(spacemit_ds_3v3_tbl,
+ ARRAY_SIZE(spacemit_ds_3v3_tbl),
+ mA);
+ default:
+ return 0;
+ }
+}
+
+static inline u32 spacemit_get_drive_strength_mA(enum spacemit_pin_io_type type,
+ u32 value)
+{
+ switch (type) {
+ case IO_TYPE_1V8:
+ return spacemit_get_ds_mA(spacemit_ds_1v8_tbl,
+ ARRAY_SIZE(spacemit_ds_1v8_tbl),
+ value & 0x6);
+ case IO_TYPE_3V3:
+ return spacemit_get_ds_mA(spacemit_ds_3v3_tbl,
+ ARRAY_SIZE(spacemit_ds_3v3_tbl),
+ value);
+ default:
+ return 0;
+ }
+}
+
+static int spacemit_pctrl_check_power(struct pinctrl_dev *pctldev,
+ struct device_node *dn,
+ struct spacemit_pin_mux_config *pinmuxs,
+ int num_pins, const char *grpname)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ struct device *dev = pctrl->dev;
+ enum spacemit_pin_io_type type;
+ u32 power = 0, i;
+
+ of_property_read_u32(dn, "power-source", &power);
+
+ for (i = 0; i < num_pins; i++) {
+ type = spacemit_to_pin_io_type(pinmuxs[i].pin);
+
+ if (type != IO_TYPE_EXTERNAL)
+ continue;
+
+ switch (power) {
+ case PIN_POWER_STATE_1V8:
+ case PIN_POWER_STATE_3V3:
+ break;
+ default:
+ dev_err(dev, "group %s has unsupported power\n",
+ grpname);
+ return -ENOTSUPP;
+ }
+ }
+
+ return 0;
+}
+
+static int spacemit_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np,
+ struct pinctrl_map **maps,
+ unsigned int *num_maps)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ struct device *dev = pctrl->dev;
+ struct device_node *child;
+ struct pinctrl_map *map;
+ const char **grpnames;
+ const char *grpname;
+ int ngroups = 0;
+ int nmaps = 0;
+ int ret;
+
+ for_each_available_child_of_node(np, child)
+ ngroups += 1;
+
+ grpnames = devm_kcalloc(dev, ngroups, sizeof(*grpnames), GFP_KERNEL);
+ if (!grpnames)
+ return -ENOMEM;
+
+ map = devm_kcalloc(dev, ngroups * 2, sizeof(*map), GFP_KERNEL);
+ if (!map)
+ return -ENOMEM;
+
+ ngroups = 0;
+ guard(mutex)(&pctrl->mutex);
+ for_each_available_child_of_node_scoped(np, child) {
+ struct spacemit_pin_mux_config *pinmuxs;
+ unsigned int config, *pins;
+ int i, npins;
+
+ npins = of_property_count_u32_elems(child, "pinmux");
+
+ if (npins < 1) {
+ dev_err(dev, "invalid pinctrl group %pOFn.%pOFn\n",
+ np, child);
+ return -EINVAL;
+ }
+
+ grpname = devm_kasprintf(dev, GFP_KERNEL, "%pOFn.%pOFn",
+ np, child);
+ if (!grpname)
+ return -ENOMEM;
+
+ grpnames[ngroups++] = grpname;
+
+ pins = devm_kcalloc(dev, npins, sizeof(*pins), GFP_KERNEL);
+ if (!pins)
+ return -ENOMEM;
+
+ pinmuxs = devm_kcalloc(dev, npins, sizeof(*pinmuxs), GFP_KERNEL);
+ if (!pinmuxs)
+ return -ENOMEM;
+
+ for (i = 0; i < npins; i++) {
+ ret = of_property_read_u32_index(child, "pinmux",
+ i, &config);
+
+ if (ret)
+ return -EINVAL;
+
+ pins[i] = spacemit_dt_get_pin(config);
+ pinmuxs[i].config = config;
+ pinmuxs[i].pin = spacemit_get_pin(pctrl, pins[i]);
+
+ if (!pinmuxs[i].pin)
+ return dev_err_probe(dev, -ENODEV, "failed to get pin %d\n", pins[i]);
+ }
+
+ ret = spacemit_pctrl_check_power(pctldev, child, pinmuxs,
+ npins, grpname);
+ if (ret < 0)
+ return ret;
+
+ map[nmaps].type = PIN_MAP_TYPE_MUX_GROUP;
+ map[nmaps].data.mux.function = np->name;
+ map[nmaps].data.mux.group = grpname;
+ nmaps += 1;
+
+ ret = pinctrl_generic_add_group(pctldev, grpname,
+ pins, npins, pinmuxs);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "failed to add group %s: %d\n", grpname, ret);
+
+ ret = pinconf_generic_parse_dt_config(child, pctldev,
+ &map[nmaps].data.configs.configs,
+ &map[nmaps].data.configs.num_configs);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to parse pin config of group %s\n",
+ grpname);
+
+ if (map[nmaps].data.configs.num_configs == 0)
+ continue;
+
+ map[nmaps].type = PIN_MAP_TYPE_CONFIGS_GROUP;
+ map[nmaps].data.configs.group_or_pin = grpname;
+ nmaps += 1;
+ }
+
+ ret = pinmux_generic_add_function(pctldev, np->name,
+ grpnames, ngroups, NULL);
+ if (ret < 0) {
+ pinctrl_utils_free_map(pctldev, map, nmaps);
+ return dev_err_probe(dev, ret, "error adding function %s\n", np->name);
+ }
+
+ *maps = map;
+ *num_maps = nmaps;
+
+ return 0;
+}
+
+static const struct pinctrl_ops spacemit_pctrl_ops = {
+ .get_groups_count = pinctrl_generic_get_group_count,
+ .get_group_name = pinctrl_generic_get_group_name,
+ .get_group_pins = pinctrl_generic_get_group_pins,
+ .pin_dbg_show = spacemit_pctrl_dbg_show,
+ .dt_node_to_map = spacemit_pctrl_dt_node_to_map,
+ .dt_free_map = pinctrl_utils_free_map,
+};
+
+static int spacemit_pmx_set_mux(struct pinctrl_dev *pctldev,
+ unsigned int fsel, unsigned int gsel)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct group_desc *group;
+ const struct spacemit_pin_mux_config *configs;
+ unsigned int i, mux;
+ void __iomem *reg;
+
+ group = pinctrl_generic_get_group(pctldev, gsel);
+ if (!group)
+ return -EINVAL;
+
+ configs = group->data;
+
+ for (i = 0; i < group->grp.npins; i++) {
+ const struct spacemit_pin *spin = configs[i].pin;
+ u32 value = configs[i].config;
+
+ reg = spacemit_pin_to_reg(pctrl, spin->pin);
+ mux = spacemit_dt_get_pin_mux(value);
+
+ guard(raw_spinlock_irqsave)(&pctrl->lock);
+ value = readl_relaxed(reg) & ~PAD_MUX;
+ writel_relaxed(mux | value, reg);
+ }
+
+ return 0;
+}
+
+static int spacemit_request_gpio(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned int pin)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);
+ void __iomem *reg;
+
+ reg = spacemit_pin_to_reg(pctrl, pin);
+ guard(raw_spinlock_irqsave)(&pctrl->lock);
+ writel_relaxed(spin->gpiofunc, reg);
+
+ return 0;
+}
+
+static const struct pinmux_ops spacemit_pmx_ops = {
+ .get_functions_count = pinmux_generic_get_function_count,
+ .get_function_name = pinmux_generic_get_function_name,
+ .get_function_groups = pinmux_generic_get_function_groups,
+ .set_mux = spacemit_pmx_set_mux,
+ .gpio_request_enable = spacemit_request_gpio,
+ .strict = true,
+};
+
+static int spacemit_pinconf_get(struct pinctrl_dev *pctldev,
+ unsigned int pin, unsigned long *config)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ int param = pinconf_to_config_param(*config);
+ u32 value, arg = 0;
+
+ if (!pin)
+ return -EINVAL;
+
+ value = readl(spacemit_pin_to_reg(pctrl, pin));
+
+ switch (param) {
+ case PIN_CONFIG_SLEW_RATE:
+ if (FIELD_GET(PAD_SLEW_RATE_EN, value))
+ arg = FIELD_GET(PAD_SLEW_RATE, value) + 2;
+ else
+ arg = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ *config = pinconf_to_config_packed(param, arg);
+
+ return 0;
+}
+
+#define ENABLE_DRV_STRENGTH BIT(1)
+#define ENABLE_SLEW_RATE BIT(2)
+static int spacemit_pinconf_generate_config(const struct spacemit_pin *spin,
+ unsigned long *configs,
+ unsigned int num_configs,
+ u32 *value)
+{
+ enum spacemit_pin_io_type type;
+ int i, param;
+ u32 v = 0, voltage = 0, arg, val;
+ u32 flag = 0, drv_strength, slew_rate;
+
+ if (!spin)
+ return -EINVAL;
+
+ for (i = 0; i < num_configs; i++) {
+ param = pinconf_to_config_param(configs[i]);
+ arg = pinconf_to_config_argument(configs[i]);
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+ v &= ~(PAD_PULL_EN | PAD_PULLDOWN | PAD_PULLUP);
+ v &= ~PAD_STRONG_PULL;
+ break;
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ v &= ~(PAD_PULLUP | PAD_STRONG_PULL);
+ v |= (PAD_PULL_EN | PAD_PULLDOWN);
+ break;
+ case PIN_CONFIG_BIAS_PULL_UP:
+ v &= ~PAD_PULLDOWN;
+ v |= (PAD_PULL_EN | PAD_PULLUP);
+
+ if (arg == 1)
+ v |= PAD_STRONG_PULL;
+ break;
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ flag |= ENABLE_DRV_STRENGTH;
+ drv_strength = arg;
+ break;
+ case PIN_CONFIG_INPUT_SCHMITT:
+ v &= ~PAD_SCHMITT;
+ v |= FIELD_PREP(PAD_SCHMITT, arg);
+ break;
+ case PIN_CONFIG_POWER_SOURCE:
+ voltage = arg;
+ break;
+ case PIN_CONFIG_SLEW_RATE:
+ if (arg) {
+ flag |= ENABLE_SLEW_RATE;
+ v |= PAD_SLEW_RATE_EN;
+ slew_rate = arg;
+ } else {
+ v &= ~PAD_SLEW_RATE_EN;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ if (flag & ENABLE_DRV_STRENGTH) {
+ type = spacemit_to_pin_io_type(spin);
+
+ /* fix external io type */
+ if (type == IO_TYPE_EXTERNAL) {
+ switch (voltage) {
+ case 1800:
+ type = IO_TYPE_1V8;
+ break;
+ case 3300:
+ type = IO_TYPE_3V3;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ val = spacemit_get_driver_strength(type, drv_strength);
+
+ v &= ~PAD_DRIVE;
+ v |= FIELD_PREP(PAD_DRIVE, val);
+ }
+
+ if (flag & ENABLE_SLEW_RATE) {
+ /* check, driver strength & slew rate */
+ if (flag & ENABLE_DRV_STRENGTH) {
+ val = FIELD_GET(PAD_SLEW_RATE, v) + 2;
+ if (slew_rate > 1 && slew_rate != val) {
+ pr_err("slew rate conflict with drive strength\n");
+ return -EINVAL;
+ }
+ } else {
+ v &= ~PAD_SLEW_RATE;
+ slew_rate = slew_rate > 1 ? (slew_rate - 2) : 0;
+ v |= FIELD_PREP(PAD_SLEW_RATE, slew_rate);
+ }
+ }
+
+ *value = v;
+
+ return 0;
+}
+
+static int spacemit_pin_set_config(struct spacemit_pinctrl *pctrl,
+ unsigned int pin, u32 value)
+{
+ const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);
+ void __iomem *reg;
+ unsigned int mux;
+
+ if (!pin)
+ return -EINVAL;
+
+ reg = spacemit_pin_to_reg(pctrl, spin->pin);
+
+ guard(raw_spinlock_irqsave)(&pctrl->lock);
+ mux = readl_relaxed(reg) & PAD_MUX;
+ writel_relaxed(mux | value, reg);
+
+ return 0;
+}
+
+static int spacemit_pinconf_set(struct pinctrl_dev *pctldev,
+ unsigned int pin, unsigned long *configs,
+ unsigned int num_configs)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);
+ u32 value;
+
+ if (spacemit_pinconf_generate_config(spin, configs, num_configs, &value))
+ return -EINVAL;
+
+ return spacemit_pin_set_config(pctrl, pin, value);
+}
+
+static int spacemit_pinconf_group_set(struct pinctrl_dev *pctldev,
+ unsigned int gsel,
+ unsigned long *configs,
+ unsigned int num_configs)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct spacemit_pin *spin;
+ const struct group_desc *group;
+ u32 value;
+ int i;
+
+ group = pinctrl_generic_get_group(pctldev, gsel);
+ if (!group)
+ return -EINVAL;
+
+ spin = spacemit_get_pin(pctrl, group->grp.pins[0]);
+ if (spacemit_pinconf_generate_config(spin, configs, num_configs, &value))
+ return -EINVAL;
+
+ for (i = 0; i < group->grp.npins; i++)
+ spacemit_pin_set_config(pctrl, group->grp.pins[i], value);
+
+ return 0;
+}
+
+static void spacemit_pinconf_dbg_pull(struct seq_file *seq, unsigned int value)
+{
+ u32 normal, strong;
+
+ if (!FIELD_GET(PAD_PULL_EN, value)) {
+ seq_puts(seq, ", bias pull disabled");
+ return;
+ }
+
+ if (FIELD_GET(PAD_PULLDOWN, value))
+ seq_puts(seq, ", bias pull down");
+
+ normal = FIELD_GET(PAD_PULLUP, value);
+ strong = FIELD_GET(PAD_STRONG_PULL, value);
+
+ if (normal && strong)
+ seq_puts(seq, ", bias strong pull up");
+ else if (normal)
+ seq_puts(seq, ", bias normal pull up");
+}
+
+static void spacemit_pinconf_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *seq, unsigned int pin)
+{
+ struct spacemit_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);
+ enum spacemit_pin_io_type type = spacemit_to_pin_io_type(spin);
+ void __iomem *reg = spacemit_pin_to_reg(pctrl, pin);
+ u32 value, tmp, mA;
+
+ value = readl(reg);
+ spacemit_pinconf_dbg_pull(seq, value);
+
+ seq_printf(seq, ", io type (%s)", io_type_desc[type]);
+
+ tmp = FIELD_GET(PAD_DRIVE, value);
+ if (type == IO_TYPE_1V8 || type == IO_TYPE_3V3) {
+ mA = spacemit_get_drive_strength_mA(type, tmp);
+ seq_printf(seq, ", drive strength (%d mA)", mA);
+ }
+
+ /* drive strength depend on power source, so show all values */
+ if (type == IO_TYPE_EXTERNAL)
+ seq_printf(seq, ", drive strength (%d or %d mA)",
+ spacemit_get_drive_strength_mA(IO_TYPE_1V8, tmp),
+ spacemit_get_drive_strength_mA(IO_TYPE_3V3, tmp));
+
+ seq_printf(seq, ", register (0x%04x)\n", value);
+}
+
+static const struct pinconf_ops spacemit_pinconf_ops = {
+ .pin_config_get = spacemit_pinconf_get,
+ .pin_config_set = spacemit_pinconf_set,
+ .pin_config_group_set = spacemit_pinconf_group_set,
+ .pin_config_dbg_show = spacemit_pinconf_dbg_show,
+ .is_generic = true,
+};
+
+static int spacemit_pinctrl_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct spacemit_pinctrl *pctrl;
+ const struct spacemit_pinctrl_data *pctrl_data;
+ int ret;
+
+ pctrl_data = device_get_match_data(dev);
+ if (!pctrl_data)
+ return -ENODEV;
+
+ if (pctrl_data->npins == 0)
+ return dev_err_probe(dev, -EINVAL, "invalid pin data\n");
+
+ pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL);
+ if (!pctrl)
+ return -ENOMEM;
+
+ pctrl->regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(pctrl->regs))
+ return PTR_ERR(pctrl->regs);
+
+ pctrl->pdesc.name = dev_name(dev);
+ pctrl->pdesc.pins = pctrl_data->pins;
+ pctrl->pdesc.npins = pctrl_data->npins;
+ pctrl->pdesc.pctlops = &spacemit_pctrl_ops;
+ pctrl->pdesc.pmxops = &spacemit_pmx_ops;
+ pctrl->pdesc.confops = &spacemit_pinconf_ops;
+ pctrl->pdesc.owner = THIS_MODULE;
+
+ pctrl->data = pctrl_data;
+ pctrl->dev = dev;
+ raw_spin_lock_init(&pctrl->lock);
+ mutex_init(&pctrl->mutex);
+
+ platform_set_drvdata(pdev, pctrl);
+
+ ret = devm_pinctrl_register_and_init(dev, &pctrl->pdesc,
+ pctrl, &pctrl->pctl_dev);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "fail to register pinctrl driver\n");
+
+ return pinctrl_enable(pctrl->pctl_dev);
+}
+
+static const struct pinctrl_pin_desc k1_pin_desc[] = {
+ PINCTRL_PIN(0, "GPIO_00"),
+ PINCTRL_PIN(1, "GPIO_01"),
+ PINCTRL_PIN(2, "GPIO_02"),
+ PINCTRL_PIN(3, "GPIO_03"),
+ PINCTRL_PIN(4, "GPIO_04"),
+ PINCTRL_PIN(5, "GPIO_05"),
+ PINCTRL_PIN(6, "GPIO_06"),
+ PINCTRL_PIN(7, "GPIO_07"),
+ PINCTRL_PIN(8, "GPIO_08"),
+ PINCTRL_PIN(9, "GPIO_09"),
+ PINCTRL_PIN(10, "GPIO_10"),
+ PINCTRL_PIN(11, "GPIO_11"),
+ PINCTRL_PIN(12, "GPIO_12"),
+ PINCTRL_PIN(13, "GPIO_13"),
+ PINCTRL_PIN(14, "GPIO_14"),
+ PINCTRL_PIN(15, "GPIO_15"),
+ PINCTRL_PIN(16, "GPIO_16"),
+ PINCTRL_PIN(17, "GPIO_17"),
+ PINCTRL_PIN(18, "GPIO_18"),
+ PINCTRL_PIN(19, "GPIO_19"),
+ PINCTRL_PIN(20, "GPIO_20"),
+ PINCTRL_PIN(21, "GPIO_21"),
+ PINCTRL_PIN(22, "GPIO_22"),
+ PINCTRL_PIN(23, "GPIO_23"),
+ PINCTRL_PIN(24, "GPIO_24"),
+ PINCTRL_PIN(25, "GPIO_25"),
+ PINCTRL_PIN(26, "GPIO_26"),
+ PINCTRL_PIN(27, "GPIO_27"),
+ PINCTRL_PIN(28, "GPIO_28"),
+ PINCTRL_PIN(29, "GPIO_29"),
+ PINCTRL_PIN(30, "GPIO_30"),
+ PINCTRL_PIN(31, "GPIO_31"),
+ PINCTRL_PIN(32, "GPIO_32"),
+ PINCTRL_PIN(33, "GPIO_33"),
+ PINCTRL_PIN(34, "GPIO_34"),
+ PINCTRL_PIN(35, "GPIO_35"),
+ PINCTRL_PIN(36, "GPIO_36"),
+ PINCTRL_PIN(37, "GPIO_37"),
+ PINCTRL_PIN(38, "GPIO_38"),
+ PINCTRL_PIN(39, "GPIO_39"),
+ PINCTRL_PIN(40, "GPIO_40"),
+ PINCTRL_PIN(41, "GPIO_41"),
+ PINCTRL_PIN(42, "GPIO_42"),
+ PINCTRL_PIN(43, "GPIO_43"),
+ PINCTRL_PIN(44, "GPIO_44"),
+ PINCTRL_PIN(45, "GPIO_45"),
+ PINCTRL_PIN(46, "GPIO_46"),
+ PINCTRL_PIN(47, "GPIO_47"),
+ PINCTRL_PIN(48, "GPIO_48"),
+ PINCTRL_PIN(49, "GPIO_49"),
+ PINCTRL_PIN(50, "GPIO_50"),
+ PINCTRL_PIN(51, "GPIO_51"),
+ PINCTRL_PIN(52, "GPIO_52"),
+ PINCTRL_PIN(53, "GPIO_53"),
+ PINCTRL_PIN(54, "GPIO_54"),
+ PINCTRL_PIN(55, "GPIO_55"),
+ PINCTRL_PIN(56, "GPIO_56"),
+ PINCTRL_PIN(57, "GPIO_57"),
+ PINCTRL_PIN(58, "GPIO_58"),
+ PINCTRL_PIN(59, "GPIO_59"),
+ PINCTRL_PIN(60, "GPIO_60"),
+ PINCTRL_PIN(61, "GPIO_61"),
+ PINCTRL_PIN(62, "GPIO_62"),
+ PINCTRL_PIN(63, "GPIO_63"),
+ PINCTRL_PIN(64, "GPIO_64"),
+ PINCTRL_PIN(65, "GPIO_65"),
+ PINCTRL_PIN(66, "GPIO_66"),
+ PINCTRL_PIN(67, "GPIO_67"),
+ PINCTRL_PIN(68, "GPIO_68"),
+ PINCTRL_PIN(69, "GPIO_69"),
+ PINCTRL_PIN(70, "GPIO_70/PRI_DTI"),
+ PINCTRL_PIN(71, "GPIO_71/PRI_TMS"),
+ PINCTRL_PIN(72, "GPIO_72/PRI_TCK"),
+ PINCTRL_PIN(73, "GPIO_73/PRI_TDO"),
+ PINCTRL_PIN(74, "GPIO_74"),
+ PINCTRL_PIN(75, "GPIO_75"),
+ PINCTRL_PIN(76, "GPIO_76"),
+ PINCTRL_PIN(77, "GPIO_77"),
+ PINCTRL_PIN(78, "GPIO_78"),
+ PINCTRL_PIN(79, "GPIO_79"),
+ PINCTRL_PIN(80, "GPIO_80"),
+ PINCTRL_PIN(81, "GPIO_81"),
+ PINCTRL_PIN(82, "GPIO_82"),
+ PINCTRL_PIN(83, "GPIO_83"),
+ PINCTRL_PIN(84, "GPIO_84"),
+ PINCTRL_PIN(85, "GPIO_85"),
+ PINCTRL_PIN(86, "GPIO_86"),
+ PINCTRL_PIN(87, "GPIO_87"),
+ PINCTRL_PIN(88, "GPIO_88"),
+ PINCTRL_PIN(89, "GPIO_89"),
+ PINCTRL_PIN(90, "GPIO_90"),
+ PINCTRL_PIN(91, "GPIO_91"),
+ PINCTRL_PIN(92, "GPIO_92"),
+ PINCTRL_PIN(93, "GPIO_93/PWR_SCL"),
+ PINCTRL_PIN(94, "GPIO_94/PWR_SDA"),
+ PINCTRL_PIN(95, "GPIO_95/VCX0_EN"),
+ PINCTRL_PIN(96, "GPIO_96/DVL0"),
+ PINCTRL_PIN(97, "GPIO_97/DVL1"),
+ PINCTRL_PIN(98, "GPIO_98/QSPI_DAT3"),
+ PINCTRL_PIN(99, "GPIO_99/QSPI_DAT2"),
+ PINCTRL_PIN(100, "GPIO_100/QSPI_DAT1"),
+ PINCTRL_PIN(101, "GPIO_101/QSPI_DAT0"),
+ PINCTRL_PIN(102, "GPIO_102/QSPI_CLK"),
+ PINCTRL_PIN(103, "GPIO_103/QSPI_CS1"),
+ PINCTRL_PIN(104, "GPIO_104/MMC1_DAT3"),
+ PINCTRL_PIN(105, "GPIO_105/MMC1_DAT2"),
+ PINCTRL_PIN(106, "GPIO_106/MMC1_DAT1"),
+ PINCTRL_PIN(107, "GPIO_107/MMC1_DAT0"),
+ PINCTRL_PIN(108, "GPIO_108/MMC1_CMD"),
+ PINCTRL_PIN(109, "GPIO_109/MMC1_CLK"),
+ PINCTRL_PIN(110, "GPIO_110"),
+ PINCTRL_PIN(111, "GPIO_111"),
+ PINCTRL_PIN(112, "GPIO_112"),
+ PINCTRL_PIN(113, "GPIO_113"),
+ PINCTRL_PIN(114, "GPIO_114"),
+ PINCTRL_PIN(115, "GPIO_115"),
+ PINCTRL_PIN(116, "GPIO_116"),
+ PINCTRL_PIN(117, "GPIO_117"),
+ PINCTRL_PIN(118, "GPIO_118"),
+ PINCTRL_PIN(119, "GPIO_119"),
+ PINCTRL_PIN(120, "GPIO_120"),
+ PINCTRL_PIN(121, "GPIO_121"),
+ PINCTRL_PIN(122, "GPIO_122"),
+ PINCTRL_PIN(123, "GPIO_123"),
+ PINCTRL_PIN(124, "GPIO_124"),
+ PINCTRL_PIN(125, "GPIO_125"),
+ PINCTRL_PIN(126, "GPIO_126"),
+ PINCTRL_PIN(127, "GPIO_127"),
+};
+
+static const struct spacemit_pin k1_pin_data[ARRAY_SIZE(k1_pin_desc)] = {
+ K1_FUNC_PIN(0, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(1, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(2, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(3, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(4, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(5, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(6, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(7, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(8, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(9, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(10, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(11, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(12, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(13, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(14, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(15, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(16, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(17, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(18, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(19, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(20, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(21, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(22, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(23, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(24, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(25, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(26, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(27, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(28, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(29, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(30, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(31, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(32, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(33, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(34, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(35, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(36, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(37, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(38, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(39, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(40, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(41, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(42, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(43, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(44, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(45, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(46, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(47, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(48, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(49, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(50, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(51, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(52, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(53, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(54, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(55, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(56, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(57, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(58, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(59, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(60, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(61, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(62, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(63, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(64, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(65, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(66, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(67, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(68, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(69, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(70, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(71, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(72, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(73, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(74, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(75, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(76, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(77, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(78, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(79, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(80, 0, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(81, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(82, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(83, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(84, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(85, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(86, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(87, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(88, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(89, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(90, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(91, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(92, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(93, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(94, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(95, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(96, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(97, 1, IO_TYPE_1V8),
+ K1_FUNC_PIN(98, 1, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(99, 1, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(100, 1, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(101, 1, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(102, 1, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(103, 1, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(104, 4, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(105, 4, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(106, 4, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(107, 4, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(108, 4, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(109, 4, IO_TYPE_EXTERNAL),
+ K1_FUNC_PIN(110, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(111, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(112, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(113, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(114, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(115, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(116, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(117, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(118, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(119, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(120, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(121, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(122, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(123, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(124, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(125, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(126, 0, IO_TYPE_1V8),
+ K1_FUNC_PIN(127, 0, IO_TYPE_1V8),
+};
+
+static const struct spacemit_pinctrl_data k1_pinctrl_data = {
+ .pins = k1_pin_desc,
+ .data = k1_pin_data,
+ .npins = ARRAY_SIZE(k1_pin_desc),
+};
+
+static const struct of_device_id k1_pinctrl_ids[] = {
+ { .compatible = "spacemit,k1-pinctrl", .data = &k1_pinctrl_data },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, k1_pinctrl_ids);
+
+static struct platform_driver k1_pinctrl_driver = {
+ .probe = spacemit_pinctrl_probe,
+ .driver = {
+ .name = "k1-pinctrl",
+ .suppress_bind_attrs = true,
+ .of_match_table = k1_pinctrl_ids,
+ },
+};
+module_platform_driver(k1_pinctrl_driver);
+
+MODULE_AUTHOR("Yixun Lan <dlan at gentoo.org>");
+MODULE_DESCRIPTION("Pinctrl driver for the SpacemiT K1 SoC");
+MODULE_LICENSE("GPL");
diff --git a/drivers/pinctrl/spacemit/pinctrl-k1.h b/drivers/pinctrl/spacemit/pinctrl-k1.h
new file mode 100644
index 0000000000000000000000000000000000000000..16143fea469ebc7c9fa65cfa177fa915576c145a
--- /dev/null
+++ b/drivers/pinctrl/spacemit/pinctrl-k1.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2024 Yixun Lan <dlan at gentoo.org> */
+
+#ifndef _PINCTRL_SPACEMIT_K1_H
+#define _PINCTRL_SPACEMIT_K1_H
+
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinconf.h>
+
+enum spacemit_pin_io_type {
+ IO_TYPE_NONE = 0,
+ IO_TYPE_1V8,
+ IO_TYPE_3V3,
+ IO_TYPE_EXTERNAL,
+};
+
+#define PIN_POWER_STATE_1V8 1800
+#define PIN_POWER_STATE_3V3 3300
+
+#define K1_PIN_IO_TYPE GENMASK(2, 1)
+
+#define K1_PIN_CAP_IO_TYPE(type) \
+ FIELD_PREP_CONST(K1_PIN_IO_TYPE, type)
+#define K1_PIN_GET_IO_TYPE(val) \
+ FIELD_GET(K1_PIN_IO_TYPE, val)
+
+#define K1_FUNC_PIN(_id, _gpiofunc, _io) \
+ { \
+ .pin = (_id), \
+ .gpiofunc = (_gpiofunc), \
+ .flags = (K1_PIN_CAP_IO_TYPE(_io)), \
+ }
+
+#endif /* _PINCTRL_SPACEMIT_K1_H */
--
2.47.0
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