1 /*
2 * Common devices definition for Gemini
3 *
4 * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/io.h>
13 #include <linux/platform_device.h>
14 #include <linux/serial_8250.h>
15 #include <linux/mtd/physmap.h>
16
17 #include <mach/irqs.h>
18 #include <mach/hardware.h>
19 #include <mach/global_reg.h>
20
21 static struct plat_serial8250_port serial_platform_data[] = {
22 {
23 .membase = (void *)IO_ADDRESS(GEMINI_UART_BASE),
24 .mapbase = GEMINI_UART_BASE,
25 .irq = IRQ_UART,
26 .uartclk = UART_CLK,
27 .regshift = 2,
28 .iotype = UPIO_MEM,
29 .type = PORT_16550A,
30 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE,
31 },
32 {},
33 };
34
35 static struct platform_device serial_device = {
36 .name = "serial8250",
37 .id = PLAT8250_DEV_PLATFORM,
38 .dev = {
39 .platform_data = serial_platform_data,
40 },
41 };
42
platform_register_uart(void)43 int platform_register_uart(void)
44 {
45 return platform_device_register(&serial_device);
46 }
47
48 static struct resource flash_resource = {
49 .start = GEMINI_FLASH_BASE,
50 .flags = IORESOURCE_MEM,
51 };
52
53 static struct physmap_flash_data pflash_platform_data = {};
54
55 static struct platform_device pflash_device = {
56 .name = "physmap-flash",
57 .id = 0,
58 .dev = {
59 .platform_data = &pflash_platform_data,
60 },
61 .resource = &flash_resource,
62 .num_resources = 1,
63 };
64
platform_register_pflash(unsigned int size,struct mtd_partition * parts,unsigned int nr_parts)65 int platform_register_pflash(unsigned int size, struct mtd_partition *parts,
66 unsigned int nr_parts)
67 {
68 unsigned int reg;
69
70 reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS);
71
72 if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL)
73 return -ENXIO;
74
75 if (reg & FLASH_WIDTH_16BIT)
76 pflash_platform_data.width = 2;
77 else
78 pflash_platform_data.width = 1;
79
80 /* enable parallel flash pins and disable others */
81 reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
82 reg &= ~PFLASH_PADS_DISABLE;
83 reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE;
84 __raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
85
86 flash_resource.end = flash_resource.start + size - 1;
87
88 pflash_platform_data.parts = parts;
89 pflash_platform_data.nr_parts = nr_parts;
90
91 return platform_device_register(&pflash_device);
92 }
93
94 static struct resource gemini_rtc_resources[] = {
95 [0] = {
96 .start = GEMINI_RTC_BASE,
97 .end = GEMINI_RTC_BASE + 0x24,
98 .flags = IORESOURCE_MEM,
99 },
100 [1] = {
101 .start = IRQ_RTC,
102 .end = IRQ_RTC,
103 .flags = IORESOURCE_IRQ,
104 },
105 };
106
107 static struct platform_device gemini_rtc_device = {
108 .name = "rtc-gemini",
109 .id = 0,
110 .num_resources = ARRAY_SIZE(gemini_rtc_resources),
111 .resource = gemini_rtc_resources,
112 };
113
platform_register_rtc(void)114 int __init platform_register_rtc(void)
115 {
116 return platform_device_register(&gemini_rtc_device);
117 }
118
119