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 <plat/gpmc.h>
18 #include <plat/gpmc-smsc911x.h>
19
20 #include <mach/board-zoom.h>
21
22 #define ZOOM_SMSC911X_CS 7
23 #define ZOOM_SMSC911X_GPIO 158
24 #define ZOOM_QUADUART_CS 3
25 #define ZOOM_QUADUART_GPIO 102
26 #define ZOOM_QUADUART_RST_GPIO 152
27 #define QUART_CLK 1843200
28 #define DEBUG_BASE 0x08000000
29 #define ZOOM_ETHR_START DEBUG_BASE
30
31 static struct omap_smsc911x_platform_data zoom_smsc911x_cfg = {
32 .cs = ZOOM_SMSC911X_CS,
33 .gpio_irq = ZOOM_SMSC911X_GPIO,
34 .gpio_reset = -EINVAL,
35 .flags = SMSC911X_USE_32BIT,
36 };
37
zoom_init_smsc911x(void)38 static inline void __init zoom_init_smsc911x(void)
39 {
40 gpmc_smsc911x_init(&zoom_smsc911x_cfg);
41 }
42
43 static struct plat_serial8250_port serial_platform_data[] = {
44 {
45 .mapbase = ZOOM_UART_BASE,
46 .irq = OMAP_GPIO_IRQ(102),
47 .flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ,
48 .irqflags = IRQF_SHARED | IRQF_TRIGGER_RISING,
49 .iotype = UPIO_MEM,
50 .regshift = 1,
51 .uartclk = QUART_CLK,
52 }, {
53 .flags = 0
54 }
55 };
56
57 static struct platform_device zoom_debugboard_serial_device = {
58 .name = "serial8250",
59 .id = PLAT8250_DEV_PLATFORM,
60 .dev = {
61 .platform_data = serial_platform_data,
62 },
63 };
64
zoom_init_quaduart(void)65 static inline void __init zoom_init_quaduart(void)
66 {
67 int quart_cs;
68 unsigned long cs_mem_base;
69 int quart_gpio = 0;
70
71 if (gpio_request_one(ZOOM_QUADUART_RST_GPIO,
72 GPIOF_OUT_INIT_LOW,
73 "TL16CP754C GPIO") < 0) {
74 pr_err("Failed to request GPIO%d for TL16CP754C\n",
75 ZOOM_QUADUART_RST_GPIO);
76 return;
77 }
78
79 quart_cs = ZOOM_QUADUART_CS;
80
81 if (gpmc_cs_request(quart_cs, SZ_1M, &cs_mem_base) < 0) {
82 printk(KERN_ERR "Failed to request GPMC mem"
83 "for Quad UART(TL16CP754C)\n");
84 return;
85 }
86
87 quart_gpio = ZOOM_QUADUART_GPIO;
88
89 if (gpio_request_one(quart_gpio, GPIOF_IN, "TL16CP754C GPIO") < 0)
90 printk(KERN_ERR "Failed to request GPIO%d for TL16CP754C\n",
91 quart_gpio);
92 }
93
omap_zoom_debugboard_detect(void)94 static inline int omap_zoom_debugboard_detect(void)
95 {
96 int debug_board_detect = 0;
97 int ret = 1;
98
99 debug_board_detect = ZOOM_SMSC911X_GPIO;
100
101 if (gpio_request_one(debug_board_detect, GPIOF_IN,
102 "Zoom debug board detect") < 0) {
103 printk(KERN_ERR "Failed to request GPIO%d for Zoom debug"
104 "board detect\n", debug_board_detect);
105 return 0;
106 }
107
108 if (!gpio_get_value(debug_board_detect)) {
109 ret = 0;
110 }
111 gpio_free(debug_board_detect);
112 return ret;
113 }
114
115 static struct platform_device *zoom_devices[] __initdata = {
116 &zoom_debugboard_serial_device,
117 };
118
zoom_debugboard_init(void)119 int __init zoom_debugboard_init(void)
120 {
121 if (!omap_zoom_debugboard_detect())
122 return 0;
123
124 zoom_init_smsc911x();
125 zoom_init_quaduart();
126 return platform_add_devices(zoom_devices, ARRAY_SIZE(zoom_devices));
127 }
128