mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
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+
|
|
/*
|
|
* (C) Copyright 2007-2011
|
|
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
|
|
* Tom Cubie <tangliang@allwinnertech.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/gpio.h>
|
|
|
|
void sunxi_gpio_set_cfgbank(struct sunxi_gpio *pio, int bank_offset, u32 val)
|
|
{
|
|
u32 index = GPIO_CFG_INDEX(bank_offset);
|
|
u32 offset = GPIO_CFG_OFFSET(bank_offset);
|
|
|
|
clrsetbits_le32(&pio->cfg[index], 0xf << offset, val << offset);
|
|
}
|
|
|
|
void sunxi_gpio_set_cfgpin(u32 pin, u32 val)
|
|
{
|
|
u32 bank = GPIO_BANK(pin);
|
|
struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
|
|
|
|
sunxi_gpio_set_cfgbank(pio, pin, val);
|
|
}
|
|
|
|
int sunxi_gpio_get_cfgbank(struct sunxi_gpio *pio, int bank_offset)
|
|
{
|
|
u32 index = GPIO_CFG_INDEX(bank_offset);
|
|
u32 offset = GPIO_CFG_OFFSET(bank_offset);
|
|
u32 cfg;
|
|
|
|
cfg = readl(&pio->cfg[index]);
|
|
cfg >>= offset;
|
|
|
|
return cfg & 0xf;
|
|
}
|
|
|
|
int sunxi_gpio_get_cfgpin(u32 pin)
|
|
{
|
|
u32 bank = GPIO_BANK(pin);
|
|
struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
|
|
|
|
return sunxi_gpio_get_cfgbank(pio, pin);
|
|
}
|
|
|
|
void sunxi_gpio_set_drv(u32 pin, u32 val)
|
|
{
|
|
u32 bank = GPIO_BANK(pin);
|
|
struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
|
|
|
|
sunxi_gpio_set_drv_bank(pio, pin, val);
|
|
}
|
|
|
|
void sunxi_gpio_set_drv_bank(struct sunxi_gpio *pio, u32 bank_offset, u32 val)
|
|
{
|
|
u32 index = GPIO_DRV_INDEX(bank_offset);
|
|
u32 offset = GPIO_DRV_OFFSET(bank_offset);
|
|
|
|
clrsetbits_le32(&pio->drv[index], 0x3 << offset, val << offset);
|
|
}
|
|
|
|
void sunxi_gpio_set_pull(u32 pin, u32 val)
|
|
{
|
|
u32 bank = GPIO_BANK(pin);
|
|
struct sunxi_gpio *pio = BANK_TO_GPIO(bank);
|
|
|
|
sunxi_gpio_set_pull_bank(pio, pin, val);
|
|
}
|
|
|
|
void sunxi_gpio_set_pull_bank(struct sunxi_gpio *pio, int bank_offset, u32 val)
|
|
{
|
|
u32 index = GPIO_PULL_INDEX(bank_offset);
|
|
u32 offset = GPIO_PULL_OFFSET(bank_offset);
|
|
|
|
clrsetbits_le32(&pio->pull[index], 0x3 << offset, val << offset);
|
|
}
|