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}