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 #include <linux/delay.h>
11
12 #include <asm/io.h>
13 #include <linux/errno.h>
14 #include <asm/arch/cpu.h>
15 #include <asm/arch/mem.h>
16 #include <asm/arch/sys_proto.h>
17 #include <asm/gpio.h>
18
19 #include "common.h"
20
21 static u32 cl_omap3_smc911x_gpmc_net_config[GPMC_MAX_REG] = {
22 NET_GPMC_CONFIG1,
23 NET_GPMC_CONFIG2,
24 NET_GPMC_CONFIG3,
25 NET_GPMC_CONFIG4,
26 NET_GPMC_CONFIG5,
27 NET_GPMC_CONFIG6,
28 0
29 };
30
cl_omap3_smc911x_setup_net_chip_gmpc(int cs,u32 base_addr)31 static void cl_omap3_smc911x_setup_net_chip_gmpc(int cs, u32 base_addr)
32 {
33 struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
34
35 enable_gpmc_cs_config(cl_omap3_smc911x_gpmc_net_config,
36 &gpmc_cfg->cs[cs], base_addr, GPMC_SIZE_16M);
37
38 /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
39 writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
40
41 /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
42 writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
43
44 /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
45 writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
46 &ctrl_base->gpmc_nadv_ale);
47 }
48
49 #ifdef CONFIG_OMAP_GPIO
cl_omap3_smc911x_reset_net_chip(int gpio)50 static int cl_omap3_smc911x_reset_net_chip(int gpio)
51 {
52 int err;
53
54 if (!gpio_is_valid(gpio))
55 return -EINVAL;
56
57 err = gpio_request(gpio, "eth rst");
58 if (err)
59 return err;
60
61 /* Set gpio as output and send a pulse */
62 gpio_direction_output(gpio, 1);
63 udelay(1);
64 gpio_set_value(gpio, 0);
65 mdelay(40);
66 gpio_set_value(gpio, 1);
67 mdelay(1);
68
69 return 0;
70 }
71 #else /* !CONFIG_OMAP_GPIO */
cl_omap3_smc911x_reset_net_chip(int gpio)72 static inline int cl_omap3_smc911x_reset_net_chip(int gpio) { return 0; }
73 #endif /* CONFIG_OMAP_GPIO */
74
cl_omap3_smc911x_init(int id,int cs,u32 base_addr,int (* reset)(int),int rst_gpio)75 int cl_omap3_smc911x_init(int id, int cs, u32 base_addr,
76 int (*reset)(int), int rst_gpio)
77 {
78 int ret;
79
80 cl_omap3_smc911x_setup_net_chip_gmpc(cs, base_addr);
81
82 if (reset)
83 reset(rst_gpio);
84 else
85 cl_omap3_smc911x_reset_net_chip(rst_gpio);
86
87 ret = smc911x_initialize(id, base_addr);
88 if (ret > 0)
89 return ret;
90
91 printf("Failed initializing SMC911x! ");
92 return 0;
93 }
94