1/*
2 * Copyright (C) 2009 Texas Instruments Inc.
3 * Mikkel Christensen <mlc@ti.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/gpio.h>
13#include <linux/serial_8250.h>
14#include <linux/smsc911x.h>
15#include <linux/interrupt.h>
16
17#include <linux/regulator/fixed.h>
18#include <linux/regulator/machine.h>
19
20#include <plat/gpmc.h>
21#include <plat/gpmc-smsc911x.h>
22
23#include <mach/board-zoom.h>
24
25#define ZOOM_SMSC911X_CS	7
26#define ZOOM_SMSC911X_GPIO	158
27#define ZOOM_QUADUART_CS	3
28#define ZOOM_QUADUART_GPIO	102
29#define ZOOM_QUADUART_RST_GPIO	152
30#define QUART_CLK		1843200
31#define DEBUG_BASE		0x08000000
32#define ZOOM_ETHR_START	DEBUG_BASE
33
34static struct omap_smsc911x_platform_data zoom_smsc911x_cfg = {
35	.cs             = ZOOM_SMSC911X_CS,
36	.gpio_irq       = ZOOM_SMSC911X_GPIO,
37	.gpio_reset     = -EINVAL,
38	.flags		= SMSC911X_USE_32BIT,
39};
40
41static inline void __init zoom_init_smsc911x(void)
42{
43	gpmc_smsc911x_init(&zoom_smsc911x_cfg);
44}
45
46static struct plat_serial8250_port serial_platform_data[] = {
47	{
48		.mapbase	= ZOOM_UART_BASE,
49		.flags		= UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ,
50		.irqflags	= IRQF_SHARED | IRQF_TRIGGER_RISING,
51		.iotype		= UPIO_MEM,
52		.regshift	= 1,
53		.uartclk	= QUART_CLK,
54	}, {
55		.flags		= 0
56	}
57};
58
59static struct platform_device zoom_debugboard_serial_device = {
60	.name			= "serial8250",
61	.id			= PLAT8250_DEV_PLATFORM,
62	.dev			= {
63		.platform_data	= serial_platform_data,
64	},
65};
66
67static inline void __init zoom_init_quaduart(void)
68{
69	int quart_cs;
70	unsigned long cs_mem_base;
71	int quart_gpio = 0;
72
73	if (gpio_request_one(ZOOM_QUADUART_RST_GPIO,
74				GPIOF_OUT_INIT_LOW,
75				"TL16CP754C GPIO") < 0) {
76		pr_err("Failed to request GPIO%d for TL16CP754C\n",
77			ZOOM_QUADUART_RST_GPIO);
78		return;
79	}
80
81	quart_cs = ZOOM_QUADUART_CS;
82
83	if (gpmc_cs_request(quart_cs, SZ_1M, &cs_mem_base) < 0) {
84		printk(KERN_ERR "Failed to request GPMC mem"
85				"for Quad UART(TL16CP754C)\n");
86		return;
87	}
88
89	quart_gpio = ZOOM_QUADUART_GPIO;
90
91	if (gpio_request_one(quart_gpio, GPIOF_IN, "TL16CP754C GPIO") < 0)
92		printk(KERN_ERR "Failed to request GPIO%d for TL16CP754C\n",
93								quart_gpio);
94
95	serial_platform_data[0].irq = gpio_to_irq(102);
96}
97
98static inline int omap_zoom_debugboard_detect(void)
99{
100	int debug_board_detect = 0;
101	int ret = 1;
102
103	debug_board_detect = ZOOM_SMSC911X_GPIO;
104
105	if (gpio_request_one(debug_board_detect, GPIOF_IN,
106			     "Zoom debug board detect") < 0) {
107		printk(KERN_ERR "Failed to request GPIO%d for Zoom debug"
108		"board detect\n", debug_board_detect);
109		return 0;
110	}
111
112	if (!gpio_get_value(debug_board_detect)) {
113		ret = 0;
114	}
115	gpio_free(debug_board_detect);
116	return ret;
117}
118
119static struct platform_device *zoom_devices[] __initdata = {
120	&zoom_debugboard_serial_device,
121};
122
123static struct regulator_consumer_supply dummy_supplies[] = {
124	REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
125	REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
126};
127
128int __init zoom_debugboard_init(void)
129{
130	if (!omap_zoom_debugboard_detect())
131		return 0;
132
133	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
134	zoom_init_smsc911x();
135	zoom_init_quaduart();
136	return platform_add_devices(zoom_devices, ARRAY_SIZE(zoom_devices));
137}
138