Andre Przywara
88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
/*
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* (C) Copyright 2007-2011
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Tom Cubie <tangliang@allwinnertech.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/gpio.h>
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void sunxi_gpio_set_cfgbank(struct sunxi_gpio *pio, int bank_offset, u32 val)
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{
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u32 index = GPIO_CFG_INDEX(bank_offset);
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u32 offset = GPIO_CFG_OFFSET(bank_offset);
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clrsetbits_le32(&pio->cfg[0] + index, 0xf << offset, val << offset);
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}
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void sunxi_gpio_set_cfgpin(u32 pin, u32 val)
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{
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u32 bank = GPIO_BANK(pin);
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struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
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sunxi_gpio_set_cfgbank(pio, pin, val);
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}
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int sunxi_gpio_get_cfgbank(struct sunxi_gpio *pio, int bank_offset)
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{
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u32 index = GPIO_CFG_INDEX(bank_offset);
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u32 offset = GPIO_CFG_OFFSET(bank_offset);
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u32 cfg;
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cfg = readl(&pio->cfg[0] + index);
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cfg >>= offset;
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return cfg & 0xf;
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}
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int sunxi_gpio_get_cfgpin(u32 pin)
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{
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u32 bank = GPIO_BANK(pin);
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struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
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return sunxi_gpio_get_cfgbank(pio, pin);
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}
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int sunxi_gpio_set_drv(u32 pin, u32 val)
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{
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u32 bank = GPIO_BANK(pin);
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u32 index = GPIO_DRV_INDEX(pin);
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u32 offset = GPIO_DRV_OFFSET(pin);
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struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
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clrsetbits_le32(&pio->drv[0] + index, 0x3 << offset, val << offset);
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return 0;
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}
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int sunxi_gpio_set_pull(u32 pin, u32 val)
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{
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u32 bank = GPIO_BANK(pin);
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u32 index = GPIO_PULL_INDEX(pin);
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u32 offset = GPIO_PULL_OFFSET(pin);
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struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
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clrsetbits_le32(&pio->pull[0] + index, 0x3 << offset, val << offset);
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return 0;
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}
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int sunxi_gpio_parse_pin_name(const char *pin_name)
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{
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int pin;
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if (pin_name[0] != 'P')
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return -1;
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if (pin_name[1] < 'A' || pin_name[1] > 'Z')
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return -1;
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pin = (pin_name[1] - 'A') << 5;
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pin += simple_strtol(&pin_name[2], NULL, 10);
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return pin;
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}
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