LXR uboot/board/compulab/common/omap3

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
   4 *
   5 * Authors: Igor Grinberg <grinberg@compulab.co.il>
   6 */
   7
   8#include <common.h>
   9#include <netdev.h>
  10
  11#include <asm/io.h>
  12#include <linux/errno.h>
  13#include <asm/arch/cpu.h>
  14#include <asm/arch/mem.h>
  15#include <asm/arch/sys_proto.h>
  16#include <asm/gpio.h>
  17
  18#include "common.h"
  19
  20static u32 cl_omap3_smc911x_gpmc_net_config[GPMC_MAX_REG] = {
  21        NET_GPMC_CONFIG1,
  22        NET_GPMC_CONFIG2,
  23        NET_GPMC_CONFIG3,
  24        NET_GPMC_CONFIG4,
  25        NET_GPMC_CONFIG5,
  26        NET_GPMC_CONFIG6,
  27        0
  28};
  29
  30static void cl_omap3_smc911x_setup_net_chip_gmpc(int cs, u32 base_addr)
  31{
  32        struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
  33
  34        enable_gpmc_cs_config(cl_omap3_smc911x_gpmc_net_config,
  35                              &gpmc_cfg->cs[cs], base_addr, GPMC_SIZE_16M);
  36
  37        /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
  38        writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
  39
  40        /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
  41        writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
  42
  43        /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
  44        writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
  45               &ctrl_base->gpmc_nadv_ale);
  46}
  47
  48#ifdef CONFIG_OMAP_GPIO
  49static int cl_omap3_smc911x_reset_net_chip(int gpio)
  50{
  51        int err;
  52
  53        if (!gpio_is_valid(gpio))
  54                return -EINVAL;
  55
  56        err = gpio_request(gpio, "eth rst");
  57        if (err)
  58                return err;
  59
  60        /* Set gpio as output and send a pulse */
  61        gpio_direction_output(gpio, 1);
  62        udelay(1);
  63        gpio_set_value(gpio, 0);
  64        mdelay(40);
  65        gpio_set_value(gpio, 1);
  66        mdelay(1);
  67
  68        return 0;
  69}
  70#else /* !CONFIG_OMAP_GPIO */
  71static inline int cl_omap3_smc911x_reset_net_chip(int gpio) { return 0; }
  72#endif /* CONFIG_OMAP_GPIO */
  73
  74int cl_omap3_smc911x_init(int id, int cs, u32 base_addr,
  75                          int (*reset)(int), int rst_gpio)
  76{
  77        int ret;
  78
  79        cl_omap3_smc911x_setup_net_chip_gmpc(cs, base_addr);
  80
  81        if (reset)
  82                reset(rst_gpio);
  83        else
  84                cl_omap3_smc911x_reset_net_chip(rst_gpio);
  85
  86        ret = smc911x_initialize(id, base_addr);
  87        if (ret > 0)
  88                return ret;
  89
  90        printf("Failed initializing SMC911x! ");
  91        return 0;
  92}
  93