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
34 static 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
zoom_init_smsc911x(void)41 static inline void __init zoom_init_smsc911x(void)
42 {
43 gpmc_smsc911x_init(&zoom_smsc911x_cfg);
44 }
45
46 static 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
59 static 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
zoom_init_quaduart(void)67 static 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
omap_zoom_debugboard_detect(void)98 static 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
119 static struct platform_device *zoom_devices[] __initdata = {
120 &zoom_debugboard_serial_device,
121 };
122
123 static struct regulator_consumer_supply dummy_supplies[] = {
124 REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
125 REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
126 };
127
zoom_debugboard_init(void)128 int __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