^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Pinctrl driver for the Wondermedia SoC's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2013 Tony Prisk <linux@prisktech.co.nz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /* VT8500 has no enable register in the extgpio bank. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define NO_REG 0xFFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define WMT_PINCTRL_BANK(__en, __dir, __dout, __din, __pen, __pcfg) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) .reg_en = __en, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) .reg_dir = __dir, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) .reg_data_out = __dout, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) .reg_data_in = __din, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) .reg_pull_en = __pen, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) .reg_pull_cfg = __pcfg, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* Encode/decode the bank/bit pairs into a pin value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define WMT_PIN(__bank, __offset) ((__bank << 5) | __offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define WMT_BANK_FROM_PIN(__pin) (__pin >> 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define WMT_BIT_FROM_PIN(__pin) (__pin & 0x1f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define WMT_GROUP(__name, __data) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) .name = __name, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .pins = __data, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .npins = ARRAY_SIZE(__data), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct wmt_pinctrl_bank_registers {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u32 reg_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u32 reg_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) u32 reg_data_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u32 reg_data_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u32 reg_pull_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) u32 reg_pull_cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct wmt_pinctrl_group {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) const unsigned int *pins;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) const unsigned npins;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct wmt_pinctrl_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct pinctrl_dev *pctl_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* must be initialized before calling wmt_pinctrl_probe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) const struct wmt_pinctrl_bank_registers *banks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) const struct pinctrl_pin_desc *pins;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) const char * const *groups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u32 nbanks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u32 npins;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u32 ngroups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct gpio_chip gpio_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct pinctrl_gpio_range gpio_range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int wmt_pinctrl_probe(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct wmt_pinctrl_data *data);