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
20 static 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
cl_omap3_smc911x_setup_net_chip_gmpc(int cs,u32 base_addr)30 static 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
cl_omap3_smc911x_reset_net_chip(int gpio)49 static 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 */
cl_omap3_smc911x_reset_net_chip(int gpio)71 static inline int cl_omap3_smc911x_reset_net_chip(int gpio) { return 0; }
72 #endif /* CONFIG_OMAP_GPIO */
73
cl_omap3_smc911x_init(int id,int cs,u32 base_addr,int (* reset)(int),int rst_gpio)74 int 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