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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Pinctrl driver for Nexell SoCs
- * (C) Copyright 2016 Nexell
- * Bongyu, KOO <freestyle@nexell.co.kr>
- */
- #include <common.h>
- #include <dm.h>
- #include <errno.h>
- #include <asm/global_data.h>
- #include <asm/io.h>
- #include "pinctrl-nexell.h"
- #include "pinctrl-s5pxx18.h"
- DECLARE_GLOBAL_DATA_PTR;
- /* given a pin-name, return the address of pin config registers */
- unsigned long pin_to_bank_base(struct udevice *dev, const char *pin_name,
- u32 *pin)
- {
- struct nexell_pinctrl_priv *priv = dev_get_priv(dev);
- const struct nexell_pin_ctrl *pin_ctrl = priv->pin_ctrl;
- const struct nexell_pin_bank_data *bank_data = pin_ctrl->pin_banks;
- u32 nr_banks = pin_ctrl->nr_banks, idx = 0;
- char bank[10];
- /*
- * The format of the pin name is <bank name>-<pin_number>.
- * Example: gpioa-4 (gpioa is the bank name and 4 is the pin number)
- */
- while (pin_name[idx] != '-') {
- bank[idx] = pin_name[idx];
- idx++;
- }
- bank[idx] = '\0';
- *pin = (u32)dectoul(&pin_name[++idx], NULL);
- /* lookup the pin bank data using the pin bank name */
- for (idx = 0; idx < nr_banks; idx++)
- if (!strcmp(bank, bank_data[idx].name))
- break;
- return priv->base + bank_data[idx].offset;
- }
- int nexell_pinctrl_probe(struct udevice *dev)
- {
- struct nexell_pinctrl_priv *priv;
- fdt_addr_t base;
- priv = dev_get_priv(dev);
- if (!priv)
- return -EINVAL;
- base = devfdt_get_addr(dev);
- if (base == FDT_ADDR_T_NONE)
- return -EINVAL;
- priv->base = base;
- priv->pin_ctrl = (struct nexell_pin_ctrl *)dev_get_driver_data(dev);
- s5pxx18_pinctrl_init(dev);
- return 0;
- }
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