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-rw-r--r--drivers/pinctrl/aspeed/pinctrl-aspeed.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/pinctrl/aspeed/pinctrl-aspeed.h b/drivers/pinctrl/aspeed/pinctrl-aspeed.h
new file mode 100644
index 0000000000..4dcde3bc29
--- /dev/null
+++ b/drivers/pinctrl/aspeed/pinctrl-aspeed.h
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2016 IBM Corp.
+ */
+
+#ifndef PINCTRL_ASPEED
+#define PINCTRL_ASPEED
+
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/regmap.h>
+
+#include "pinmux-aspeed.h"
+
+/**
+ * @param The pinconf parameter type
+ * @pins The pin range this config struct covers, [low, high]
+ * @reg The register housing the configuration bits
+ * @mask The mask to select the bits of interest in @reg
+ */
+struct aspeed_pin_config {
+ enum pin_config_param param;
+ unsigned int pins[2];
+ unsigned int reg;
+ u32 mask;
+};
+
+#define ASPEED_PINCTRL_PIN(name_) \
+ [name_] = { \
+ .number = name_, \
+ .name = #name_, \
+ .drv_data = (void *) &(PIN_SYM(name_)) \
+ }
+
+#define ASPEED_SB_PINCONF(param_, pin0_, pin1_, reg_, bit_) { \
+ .param = param_, \
+ .pins = {pin0_, pin1_}, \
+ .reg = reg_, \
+ .mask = BIT_MASK(bit_) \
+}
+
+#define ASPEED_PULL_DOWN_PINCONF(pin_, reg_, bit_) \
+ ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_PULL_DOWN, pin_, pin_, reg_, bit_), \
+ ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_DISABLE, pin_, pin_, reg_, bit_)
+
+#define ASPEED_PULL_UP_PINCONF(pin_, reg_, bit_) \
+ ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_PULL_UP, pin_, pin_, reg_, bit_), \
+ ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_DISABLE, pin_, pin_, reg_, bit_)
+/*
+ * Aspeed pin configuration description.
+ *
+ * @param: pinconf configuration parameter
+ * @arg: The supported argument for @param, or -1 if any value is supported
+ * @val: The register value to write to configure @arg for @param
+ * @mask: The bitfield mask for @val
+ *
+ * The map is to be used in conjunction with the configuration array supplied
+ * by the driver implementation.
+ */
+struct aspeed_pin_config_map {
+ enum pin_config_param param;
+ s32 arg;
+ u32 val;
+ u32 mask;
+};
+
+struct aspeed_pinctrl_data {
+ struct regmap *scu;
+
+ const struct pinctrl_pin_desc *pins;
+ const unsigned int npins;
+
+ const struct aspeed_pin_config *configs;
+ const unsigned int nconfigs;
+
+ struct aspeed_pinmux_data pinmux;
+
+ const struct aspeed_pin_config_map *confmaps;
+ const unsigned int nconfmaps;
+};
+
+/* Aspeed pinctrl helpers */
+int aspeed_pinctrl_get_groups_count(struct pinctrl_dev *pctldev);
+const char *aspeed_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned int group);
+int aspeed_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned int group, const unsigned int **pins,
+ unsigned int *npins);
+void aspeed_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
+ struct seq_file *s, unsigned int offset);
+int aspeed_pinmux_get_fn_count(struct pinctrl_dev *pctldev);
+const char *aspeed_pinmux_get_fn_name(struct pinctrl_dev *pctldev,
+ unsigned int function);
+int aspeed_pinmux_get_fn_groups(struct pinctrl_dev *pctldev,
+ unsigned int function, const char * const **groups,
+ unsigned int * const num_groups);
+int aspeed_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int function,
+ unsigned int group);
+int aspeed_gpio_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned int offset);
+int aspeed_pinctrl_probe(struct platform_device *pdev,
+ struct pinctrl_desc *pdesc,
+ struct aspeed_pinctrl_data *pdata);
+int aspeed_pin_config_get(struct pinctrl_dev *pctldev, unsigned int offset,
+ unsigned long *config);
+int aspeed_pin_config_set(struct pinctrl_dev *pctldev, unsigned int offset,
+ unsigned long *configs, unsigned int num_configs);
+int aspeed_pin_config_group_get(struct pinctrl_dev *pctldev,
+ unsigned int selector,
+ unsigned long *config);
+int aspeed_pin_config_group_set(struct pinctrl_dev *pctldev,
+ unsigned int selector,
+ unsigned long *configs,
+ unsigned int num_configs);
+
+#endif /* PINCTRL_ASPEED */