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https://github.com/AsahiLinux/u-boot
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8695b5111c
The calls for flipping bits in the Allwinner pin controller registers were using unnecessarily complex pointer arithmetic. Improve readability by simplifying the expression. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#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[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[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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void 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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struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
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sunxi_gpio_set_drv_bank(pio, pin, val);
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}
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void sunxi_gpio_set_drv_bank(struct sunxi_gpio *pio, u32 bank_offset, u32 val)
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{
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u32 index = GPIO_DRV_INDEX(bank_offset);
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u32 offset = GPIO_DRV_OFFSET(bank_offset);
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clrsetbits_le32(&pio->drv[index], 0x3 << offset, val << offset);
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}
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void 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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struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
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sunxi_gpio_set_pull_bank(pio, pin, val);
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}
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void sunxi_gpio_set_pull_bank(struct sunxi_gpio *pio, int bank_offset, u32 val)
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{
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u32 index = GPIO_PULL_INDEX(bank_offset);
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u32 offset = GPIO_PULL_OFFSET(bank_offset);
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clrsetbits_le32(&pio->pull[index], 0x3 << offset, val << offset);
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}
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