2 * arch/arm/mach-imx/generic.c
5 * Created: april 20th, 2004
6 * Copyright: Synertronixx GmbH
8 * Common code for i.MX machines
10 * SPDX-License-Identifier: GPL-2.0+
17 #include <asm/arch/imx-regs.h>
19 void imx_gpio_mode(int gpio_mode)
21 unsigned int pin = gpio_mode & GPIO_PIN_MASK;
22 unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5;
23 unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10;
27 if(gpio_mode & GPIO_PUEN)
28 PUEN(port) |= (1<<pin);
30 PUEN(port) &= ~(1<<pin);
33 if(gpio_mode & GPIO_OUT)
36 DDIR(port) &= ~(1<<pin);
38 /* Primary / alternate function */
39 if(gpio_mode & GPIO_AF)
40 GPR(port) |= (1<<pin);
42 GPR(port) &= ~(1<<pin);
46 GIUS(port) |= (1<<pin);
48 GIUS(port) &= ~(1<<pin);
50 /* Output / input configuration */
51 /* FIXME: I'm not very sure about OCR and ICONF, someone
52 * should have a look over it
56 tmp &= ~( 3<<(pin*2));
57 tmp |= (ocr << (pin*2));
60 if( gpio_mode & GPIO_AOUT )
61 ICONFA1(port) &= ~( 3<<(pin*2));
62 if( gpio_mode & GPIO_BOUT )
63 ICONFB1(port) &= ~( 3<<(pin*2));
66 tmp &= ~( 3<<((pin-16)*2));
67 tmp |= (ocr << ((pin-16)*2));
70 if( gpio_mode & GPIO_AOUT )
71 ICONFA2(port) &= ~( 3<<((pin-16)*2));
72 if( gpio_mode & GPIO_BOUT )
73 ICONFB2(port) &= ~( 3<<((pin-16)*2));
77 #endif /* CONFIG_IMX */