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Diffstat (limited to 'drivers/pinctrl/sunxi/pinctrl-sunxi.h')
-rw-r--r--drivers/pinctrl/sunxi/pinctrl-sunxi.h309
1 files changed, 309 insertions, 0 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.h b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
new file mode 100644
index 0000000000..a87a2f944d
--- /dev/null
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
@@ -0,0 +1,309 @@
+/*
+ * Allwinner A1X SoCs pinctrl driver.
+ *
+ * Copyright (C) 2012 Maxime Ripard
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __PINCTRL_SUNXI_H
+#define __PINCTRL_SUNXI_H
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+
+#define PA_BASE 0
+#define PB_BASE 32
+#define PC_BASE 64
+#define PD_BASE 96
+#define PE_BASE 128
+#define PF_BASE 160
+#define PG_BASE 192
+#define PH_BASE 224
+#define PI_BASE 256
+#define PL_BASE 352
+#define PM_BASE 384
+#define PN_BASE 416
+
+#define SUNXI_PINCTRL_PIN(bank, pin) \
+ PINCTRL_PIN(P ## bank ## _BASE + (pin), "P" #bank #pin)
+
+#define SUNXI_PIN_NAME_MAX_LEN 5
+
+#define BANK_MEM_SIZE 0x24
+#define MUX_REGS_OFFSET 0x0
+#define MUX_FIELD_WIDTH 4
+#define DATA_REGS_OFFSET 0x10
+#define DATA_FIELD_WIDTH 1
+#define DLEVEL_REGS_OFFSET 0x14
+#define DLEVEL_FIELD_WIDTH 2
+#define PULL_REGS_OFFSET 0x1c
+#define PULL_FIELD_WIDTH 2
+
+#define D1_BANK_MEM_SIZE 0x30
+#define D1_DLEVEL_FIELD_WIDTH 4
+#define D1_PULL_REGS_OFFSET 0x24
+
+#define PINS_PER_BANK 32
+
+#define IRQ_PER_BANK 32
+
+#define IRQ_CFG_REG 0x200
+#define IRQ_CFG_IRQ_PER_REG 8
+#define IRQ_CFG_IRQ_BITS 4
+#define IRQ_CFG_IRQ_MASK ((1 << IRQ_CFG_IRQ_BITS) - 1)
+#define IRQ_CTRL_REG 0x210
+#define IRQ_CTRL_IRQ_PER_REG 32
+#define IRQ_CTRL_IRQ_BITS 1
+#define IRQ_CTRL_IRQ_MASK ((1 << IRQ_CTRL_IRQ_BITS) - 1)
+#define IRQ_STATUS_REG 0x214
+#define IRQ_STATUS_IRQ_PER_REG 32
+#define IRQ_STATUS_IRQ_BITS 1
+#define IRQ_STATUS_IRQ_MASK ((1 << IRQ_STATUS_IRQ_BITS) - 1)
+
+#define IRQ_DEBOUNCE_REG 0x218
+
+#define IRQ_MEM_SIZE 0x20
+
+#define IRQ_EDGE_RISING 0x00
+#define IRQ_EDGE_FALLING 0x01
+#define IRQ_LEVEL_HIGH 0x02
+#define IRQ_LEVEL_LOW 0x03
+#define IRQ_EDGE_BOTH 0x04
+
+#define GRP_CFG_REG 0x300
+
+#define IO_BIAS_MASK GENMASK(3, 0)
+
+#define SUN4I_FUNC_INPUT 0
+#define SUN4I_FUNC_IRQ 6
+
+#define PINCTRL_SUN5I_A10S BIT(1)
+#define PINCTRL_SUN5I_A13 BIT(2)
+#define PINCTRL_SUN5I_GR8 BIT(3)
+#define PINCTRL_SUN6I_A31 BIT(4)
+#define PINCTRL_SUN6I_A31S BIT(5)
+#define PINCTRL_SUN4I_A10 BIT(6)
+#define PINCTRL_SUN7I_A20 BIT(7)
+#define PINCTRL_SUN8I_R40 BIT(8)
+#define PINCTRL_SUN8I_V3 BIT(9)
+#define PINCTRL_SUN8I_V3S BIT(10)
+/* Variants below here have an updated register layout. */
+#define PINCTRL_SUN20I_D1 BIT(11)
+
+#define PIO_POW_MOD_SEL_REG 0x340
+#define PIO_POW_MOD_CTL_REG 0x344
+
+enum sunxi_desc_bias_voltage {
+ BIAS_VOLTAGE_NONE,
+ /*
+ * Bias voltage configuration is done through
+ * Pn_GRP_CONFIG registers, as seen on A80 SoC.
+ */
+ BIAS_VOLTAGE_GRP_CONFIG,
+ /*
+ * Bias voltage is set through PIO_POW_MOD_SEL_REG
+ * register, as seen on H6 SoC, for example.
+ */
+ BIAS_VOLTAGE_PIO_POW_MODE_SEL,
+ /*
+ * Bias voltage is set through PIO_POW_MOD_SEL_REG
+ * and PIO_POW_MOD_CTL_REG register, as seen on
+ * A100 and D1 SoC, for example.
+ */
+ BIAS_VOLTAGE_PIO_POW_MODE_CTL,
+};
+
+struct sunxi_desc_function {
+ unsigned long variant;
+ const char *name;
+ u8 muxval;
+ u8 irqbank;
+ u8 irqnum;
+};
+
+struct sunxi_desc_pin {
+ struct pinctrl_pin_desc pin;
+ unsigned long variant;
+ struct sunxi_desc_function *functions;
+};
+
+struct sunxi_pinctrl_desc {
+ const struct sunxi_desc_pin *pins;
+ int npins;
+ unsigned pin_base;
+ unsigned irq_banks;
+ const unsigned int *irq_bank_map;
+ bool irq_read_needs_mux;
+ bool disable_strict_mode;
+ enum sunxi_desc_bias_voltage io_bias_cfg_variant;
+};
+
+struct sunxi_pinctrl_function {
+ const char *name;
+ const char **groups;
+ unsigned ngroups;
+};
+
+struct sunxi_pinctrl_group {
+ const char *name;
+ unsigned pin;
+};
+
+struct sunxi_pinctrl_regulator {
+ struct regulator *regulator;
+ refcount_t refcount;
+};
+
+struct sunxi_pinctrl {
+ void __iomem *membase;
+ struct gpio_chip *chip;
+ const struct sunxi_pinctrl_desc *desc;
+ struct device *dev;
+ struct sunxi_pinctrl_regulator regulators[9];
+ struct irq_domain *domain;
+ struct sunxi_pinctrl_function *functions;
+ unsigned nfunctions;
+ struct sunxi_pinctrl_group *groups;
+ unsigned ngroups;
+ int *irq;
+ unsigned *irq_array;
+ raw_spinlock_t lock;
+ struct pinctrl_dev *pctl_dev;
+ unsigned long variant;
+ u32 bank_mem_size;
+ u32 pull_regs_offset;
+ u32 dlevel_field_width;
+};
+
+#define SUNXI_PIN(_pin, ...) \
+ { \
+ .pin = _pin, \
+ .functions = (struct sunxi_desc_function[]){ \
+ __VA_ARGS__, { } }, \
+ }
+
+#define SUNXI_PIN_VARIANT(_pin, _variant, ...) \
+ { \
+ .pin = _pin, \
+ .variant = _variant, \
+ .functions = (struct sunxi_desc_function[]){ \
+ __VA_ARGS__, { } }, \
+ }
+
+#define SUNXI_FUNCTION(_val, _name) \
+ { \
+ .name = _name, \
+ .muxval = _val, \
+ }
+
+#define SUNXI_FUNCTION_VARIANT(_val, _name, _variant) \
+ { \
+ .name = _name, \
+ .muxval = _val, \
+ .variant = _variant, \
+ }
+
+#define SUNXI_FUNCTION_IRQ(_val, _irq) \
+ { \
+ .name = "irq", \
+ .muxval = _val, \
+ .irqnum = _irq, \
+ }
+
+#define SUNXI_FUNCTION_IRQ_BANK(_val, _bank, _irq) \
+ { \
+ .name = "irq", \
+ .muxval = _val, \
+ .irqbank = _bank, \
+ .irqnum = _irq, \
+ }
+
+static inline u32 sunxi_irq_hw_bank_num(const struct sunxi_pinctrl_desc *desc, u8 bank)
+{
+ if (!desc->irq_bank_map)
+ return bank;
+ else
+ return desc->irq_bank_map[bank];
+}
+
+static inline u32 sunxi_irq_cfg_reg(const struct sunxi_pinctrl_desc *desc,
+ u16 irq)
+{
+ u8 bank = irq / IRQ_PER_BANK;
+ u8 reg = (irq % IRQ_PER_BANK) / IRQ_CFG_IRQ_PER_REG * 0x04;
+
+ return IRQ_CFG_REG +
+ sunxi_irq_hw_bank_num(desc, bank) * IRQ_MEM_SIZE + reg;
+}
+
+static inline u32 sunxi_irq_cfg_offset(u16 irq)
+{
+ u32 irq_num = irq % IRQ_CFG_IRQ_PER_REG;
+ return irq_num * IRQ_CFG_IRQ_BITS;
+}
+
+static inline u32 sunxi_irq_ctrl_reg_from_bank(const struct sunxi_pinctrl_desc *desc, u8 bank)
+{
+ return IRQ_CTRL_REG + sunxi_irq_hw_bank_num(desc, bank) * IRQ_MEM_SIZE;
+}
+
+static inline u32 sunxi_irq_ctrl_reg(const struct sunxi_pinctrl_desc *desc,
+ u16 irq)
+{
+ u8 bank = irq / IRQ_PER_BANK;
+
+ return sunxi_irq_ctrl_reg_from_bank(desc, bank);
+}
+
+static inline u32 sunxi_irq_ctrl_offset(u16 irq)
+{
+ u32 irq_num = irq % IRQ_CTRL_IRQ_PER_REG;
+ return irq_num * IRQ_CTRL_IRQ_BITS;
+}
+
+static inline u32 sunxi_irq_debounce_reg_from_bank(const struct sunxi_pinctrl_desc *desc, u8 bank)
+{
+ return IRQ_DEBOUNCE_REG +
+ sunxi_irq_hw_bank_num(desc, bank) * IRQ_MEM_SIZE;
+}
+
+static inline u32 sunxi_irq_status_reg_from_bank(const struct sunxi_pinctrl_desc *desc, u8 bank)
+{
+ return IRQ_STATUS_REG +
+ sunxi_irq_hw_bank_num(desc, bank) * IRQ_MEM_SIZE;
+}
+
+static inline u32 sunxi_irq_status_reg(const struct sunxi_pinctrl_desc *desc,
+ u16 irq)
+{
+ u8 bank = irq / IRQ_PER_BANK;
+
+ return sunxi_irq_status_reg_from_bank(desc, bank);
+}
+
+static inline u32 sunxi_irq_status_offset(u16 irq)
+{
+ u32 irq_num = irq % IRQ_STATUS_IRQ_PER_REG;
+ return irq_num * IRQ_STATUS_IRQ_BITS;
+}
+
+static inline u32 sunxi_grp_config_reg(u16 pin)
+{
+ u8 bank = pin / PINS_PER_BANK;
+
+ return GRP_CFG_REG + bank * 0x4;
+}
+
+int sunxi_pinctrl_init_with_variant(struct platform_device *pdev,
+ const struct sunxi_pinctrl_desc *desc,
+ unsigned long variant);
+
+#define sunxi_pinctrl_init(_dev, _desc) \
+ sunxi_pinctrl_init_with_variant(_dev, _desc, 0)
+
+#endif /* __PINCTRL_SUNXI_H */