+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Freescale MPC83xx GPIO handling.
- */
-
-#include <common.h>
-#include <malloc.h>
-#include <mpc83xx.h>
-#include <asm/gpio.h>
-#include <asm/io.h>
-
-#ifndef CFG_MPC83XX_GPIO_0_INIT_DIRECTION
-#define CFG_MPC83XX_GPIO_0_INIT_DIRECTION 0
-#endif
-#ifndef CFG_MPC83XX_GPIO_1_INIT_DIRECTION
-#define CFG_MPC83XX_GPIO_1_INIT_DIRECTION 0
-#endif
-#ifndef CFG_MPC83XX_GPIO_0_INIT_OPEN_DRAIN
-#define CFG_MPC83XX_GPIO_0_INIT_OPEN_DRAIN 0
-#endif
-#ifndef CFG_MPC83XX_GPIO_1_INIT_OPEN_DRAIN
-#define CFG_MPC83XX_GPIO_1_INIT_OPEN_DRAIN 0
-#endif
-#ifndef CFG_MPC83XX_GPIO_0_INIT_VALUE
-#define CFG_MPC83XX_GPIO_0_INIT_VALUE 0
-#endif
-#ifndef CFG_MPC83XX_GPIO_1_INIT_VALUE
-#define CFG_MPC83XX_GPIO_1_INIT_VALUE 0
-#endif
-
-static unsigned int gpio_output_value[MPC83XX_GPIO_CTRLRS];
-
-/*
- * Generic_GPIO primitives.
- */
-
-int gpio_request(unsigned gpio, const char *label)
-{
- if (gpio >= MAX_NUM_GPIOS)
- return -1;
-
- return 0;
-}
-
-int gpio_free(unsigned gpio)
-{
- /* Do not set to input */
- return 0;
-}
-
-/* set GPIO pin 'gpio' as an input */
-int gpio_direction_input(unsigned gpio)
-{
- immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
- unsigned int ctrlr;
- unsigned int line;
- unsigned int line_mask;
-
- /* 32-bits per controller */
- ctrlr = gpio >> 5;
- line = gpio & (0x1F);
-
- /* Big endian */
- line_mask = 1 << (31 - line);
-
- clrbits_be32(&im->gpio[ctrlr].dir, line_mask);
-
- return 0;
-}
-
-/* set GPIO pin 'gpio' as an output, with polarity 'value' */
-int gpio_direction_output(unsigned gpio, int value)
-{
- immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
- unsigned int ctrlr;
- unsigned int line;
- unsigned int line_mask;
-
- if (value != 0 && value != 1) {
- printf("Error: Value parameter must be 0 or 1.\n");
- return -1;
- }
-
- gpio_set_value(gpio, value);
-
- /* 32-bits per controller */
- ctrlr = gpio >> 5;
- line = gpio & (0x1F);
-
- /* Big endian */
- line_mask = 1 << (31 - line);
-
- /* Make the line output */
- setbits_be32(&im->gpio[ctrlr].dir, line_mask);
-
- return 0;
-}
-
-/* read GPIO IN value of pin 'gpio' */
-int gpio_get_value(unsigned gpio)
-{
- immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
- unsigned int ctrlr;
- unsigned int line;
- unsigned int line_mask;
-
- /* 32-bits per controller */
- ctrlr = gpio >> 5;
- line = gpio & (0x1F);
-
- /* Big endian */
- line_mask = 1 << (31 - line);
-
- /* Read the value and mask off the bit */
- return (in_be32(&im->gpio[ctrlr].dat) & line_mask) != 0;
-}
-
-/* write GPIO OUT value to pin 'gpio' */
-int gpio_set_value(unsigned gpio, int value)
-{
- immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
- unsigned int ctrlr;
- unsigned int line;
- unsigned int line_mask;
-
- if (value != 0 && value != 1) {
- printf("Error: Value parameter must be 0 or 1.\n");
- return -1;
- }
-
- /* 32-bits per controller */
- ctrlr = gpio >> 5;
- line = gpio & (0x1F);
-
- /* Big endian */
- line_mask = 1 << (31 - line);
-
- /* Update the local output buffer soft copy */
- gpio_output_value[ctrlr] =
- (gpio_output_value[ctrlr] & ~line_mask) | \
- (value ? line_mask : 0);
-
- /* Write the output */
- out_be32(&im->gpio[ctrlr].dat, gpio_output_value[ctrlr]);
-
- return 0;
-}
-
-/* Configure GPIO registers early */
-void mpc83xx_gpio_init_f(void)
-{
- immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
-
-#if MPC83XX_GPIO_CTRLRS >= 1
- out_be32(&im->gpio[0].dir, CFG_MPC83XX_GPIO_0_INIT_DIRECTION);
- out_be32(&im->gpio[0].odr, CFG_MPC83XX_GPIO_0_INIT_OPEN_DRAIN);
- out_be32(&im->gpio[0].dat, CFG_MPC83XX_GPIO_0_INIT_VALUE);
- out_be32(&im->gpio[0].ier, 0xFFFFFFFF); /* Clear all events */
- out_be32(&im->gpio[0].imr, 0);
- out_be32(&im->gpio[0].icr, 0);
-#endif
-
-#if MPC83XX_GPIO_CTRLRS >= 2
- out_be32(&im->gpio[1].dir, CFG_MPC83XX_GPIO_1_INIT_DIRECTION);
- out_be32(&im->gpio[1].odr, CFG_MPC83XX_GPIO_1_INIT_OPEN_DRAIN);
- out_be32(&im->gpio[1].dat, CFG_MPC83XX_GPIO_1_INIT_VALUE);
- out_be32(&im->gpio[1].ier, 0xFFFFFFFF); /* Clear all events */
- out_be32(&im->gpio[1].imr, 0);
- out_be32(&im->gpio[1].icr, 0);
-#endif
-}
-
-/* Initialize GPIO soft-copies */
-void mpc83xx_gpio_init_r(void)
-{
-#if MPC83XX_GPIO_CTRLRS >= 1
- gpio_output_value[0] = CFG_MPC83XX_GPIO_0_INIT_VALUE;
-#endif
-
-#if MPC83XX_GPIO_CTRLRS >= 2
- gpio_output_value[1] = CFG_MPC83XX_GPIO_1_INIT_VALUE;
-#endif
-}