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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2019 Rockchip Electronics Co., Ltd
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/pinctrl.h>
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#include <regmap.h>
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#include <syscon.h>
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#include <linux/bitops.h>
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#include "pinctrl-rockchip.h"
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static int rk3036_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
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{
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struct rockchip_pinctrl_priv *priv = bank->priv;
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int iomux_num = (pin / 8);
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struct regmap *regmap;
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int reg, ret, mask, mux_type;
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u8 bit;
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u32 data;
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regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
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? priv->regmap_pmu : priv->regmap_base;
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/* get basic quadrupel of mux registers and the correct reg inside */
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mux_type = bank->iomux[iomux_num].type;
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reg = bank->iomux[iomux_num].offset;
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reg += rockchip_get_mux_data(mux_type, pin, &bit, &mask);
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data = (mask << (bit + 16));
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data |= (mux & mask) << bit;
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ret = regmap_write(regmap, reg, data);
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return ret;
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}
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#define RK3036_PULL_OFFSET 0x118
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#define RK3036_PULL_PINS_PER_REG 16
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#define RK3036_PULL_BANK_STRIDE 8
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static void rk3036_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
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int pin_num, struct regmap **regmap,
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int *reg, u8 *bit)
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{
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struct rockchip_pinctrl_priv *priv = bank->priv;
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*regmap = priv->regmap_base;
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*reg = RK3036_PULL_OFFSET;
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*reg += bank->bank_num * RK3036_PULL_BANK_STRIDE;
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*reg += (pin_num / RK3036_PULL_PINS_PER_REG) * 4;
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*bit = pin_num % RK3036_PULL_PINS_PER_REG;
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};
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static int rk3036_set_pull(struct rockchip_pin_bank *bank,
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int pin_num, int pull)
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{
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struct regmap *regmap;
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int reg, ret;
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u8 bit;
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u32 data;
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if (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT &&
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pull != PIN_CONFIG_BIAS_DISABLE)
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return -ENOTSUPP;
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rk3036_calc_pull_reg_and_bit(bank, pin_num, ®map, ®, &bit);
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data = BIT(bit + 16);
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if (pull == PIN_CONFIG_BIAS_DISABLE)
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data |= BIT(bit);
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ret = regmap_write(regmap, reg, data);
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return ret;
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}
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static struct rockchip_pin_bank rk3036_pin_banks[] = {
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PIN_BANK(0, 32, "gpio0"),
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PIN_BANK(1, 32, "gpio1"),
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PIN_BANK(2, 32, "gpio2"),
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};
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static struct rockchip_pin_ctrl rk3036_pin_ctrl = {
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.pin_banks = rk3036_pin_banks,
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.nr_banks = ARRAY_SIZE(rk3036_pin_banks),
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.grf_mux_offset = 0xa8,
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.set_mux = rk3036_set_mux,
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.set_pull = rk3036_set_pull,
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};
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static const struct udevice_id rk3036_pinctrl_ids[] = {
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{
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.compatible = "rockchip,rk3036-pinctrl",
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.data = (ulong)&rk3036_pin_ctrl
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},
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{}
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};
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U_BOOT_DRIVER(pinctrl_rockchip) = {
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.name = "rk3036-pinctrl",
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.id = UCLASS_PINCTRL,
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.of_match = rk3036_pinctrl_ids,
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.priv_auto = sizeof(struct rockchip_pinctrl_priv),
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.ops = &rockchip_pinctrl_ops,
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#if !CONFIG_IS_ENABLED(OF_PLATDATA)
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.bind = dm_scan_fdt_dev,
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#endif
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.probe = rockchip_pinctrl_probe,
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};
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