1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Copyright (c) 2006 American Microsystems Limited
4 // David Anders <danders@amltd.com>
5 //
6 // @History:
7 // derived from linux/arch/arm/mach-s3c2410/mach-bast.c, written by
8 // Ben Dooks <ben@simtec.co.uk>
9
10 #include <linux/kernel.h>
11 #include <linux/types.h>
12 #include <linux/interrupt.h>
13 #include <linux/list.h>
14 #include <linux/timer.h>
15 #include <linux/init.h>
16 #include <linux/gpio.h>
17 #include <linux/device.h>
18 #include <linux/platform_device.h>
19 #include <linux/proc_fs.h>
20 #include <linux/serial_core.h>
21 #include <linux/serial_s3c.h>
22 #include <linux/io.h>
23
24 #include <asm/mach/arch.h>
25 #include <asm/mach/map.h>
26 #include <asm/mach/irq.h>
27 #include <asm/mach/flash.h>
28
29 #include <mach/hardware.h>
30 #include <asm/irq.h>
31 #include <asm/mach-types.h>
32 #include <mach/fb.h>
33
34 #include <mach/regs-lcd.h>
35 #include <mach/regs-gpio.h>
36 #include <mach/gpio-samsung.h>
37
38 #include <linux/platform_data/i2c-s3c2410.h>
39 #include <plat/devs.h>
40 #include <plat/cpu.h>
41 #include <plat/gpio-cfg.h>
42
43 #include <linux/mtd/mtd.h>
44 #include <linux/mtd/partitions.h>
45 #include <linux/mtd/map.h>
46 #include <linux/mtd/physmap.h>
47
48 #include <plat/samsung-time.h>
49
50 #include "common.h"
51
52 static struct resource amlm5900_nor_resource =
53 DEFINE_RES_MEM(0x00000000, SZ_16M);
54
55 static struct mtd_partition amlm5900_mtd_partitions[] = {
56 {
57 .name = "System",
58 .size = 0x240000,
59 .offset = 0,
60 .mask_flags = MTD_WRITEABLE, /* force read-only */
61 }, {
62 .name = "Kernel",
63 .size = 0x100000,
64 .offset = MTDPART_OFS_APPEND,
65 }, {
66 .name = "Ramdisk",
67 .size = 0x300000,
68 .offset = MTDPART_OFS_APPEND,
69 }, {
70 .name = "JFFS2",
71 .size = 0x9A0000,
72 .offset = MTDPART_OFS_APPEND,
73 }, {
74 .name = "Settings",
75 .size = MTDPART_SIZ_FULL,
76 .offset = MTDPART_OFS_APPEND,
77 }
78 };
79
80 static struct physmap_flash_data amlm5900_flash_data = {
81 .width = 2,
82 .parts = amlm5900_mtd_partitions,
83 .nr_parts = ARRAY_SIZE(amlm5900_mtd_partitions),
84 };
85
86 static struct platform_device amlm5900_device_nor = {
87 .name = "physmap-flash",
88 .id = 0,
89 .dev = {
90 .platform_data = &amlm5900_flash_data,
91 },
92 .num_resources = 1,
93 .resource = &amlm5900_nor_resource,
94 };
95
96 static struct map_desc amlm5900_iodesc[] __initdata = {
97 };
98
99 #define UCON S3C2410_UCON_DEFAULT
100 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
101 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
102
103 static struct s3c2410_uartcfg amlm5900_uartcfgs[] = {
104 [0] = {
105 .hwport = 0,
106 .flags = 0,
107 .ucon = UCON,
108 .ulcon = ULCON,
109 .ufcon = UFCON,
110 },
111 [1] = {
112 .hwport = 1,
113 .flags = 0,
114 .ucon = UCON,
115 .ulcon = ULCON,
116 .ufcon = UFCON,
117 },
118 [2] = {
119 .hwport = 2,
120 .flags = 0,
121 .ucon = UCON,
122 .ulcon = ULCON,
123 .ufcon = UFCON,
124 }
125 };
126
127
128 static struct platform_device *amlm5900_devices[] __initdata = {
129 #ifdef CONFIG_FB_S3C2410
130 &s3c_device_lcd,
131 #endif
132 &s3c_device_adc,
133 &s3c_device_wdt,
134 &s3c_device_i2c0,
135 &s3c_device_ohci,
136 &s3c_device_rtc,
137 &s3c_device_usbgadget,
138 &s3c_device_sdi,
139 &amlm5900_device_nor,
140 };
141
amlm5900_map_io(void)142 static void __init amlm5900_map_io(void)
143 {
144 s3c24xx_init_io(amlm5900_iodesc, ARRAY_SIZE(amlm5900_iodesc));
145 s3c24xx_init_uarts(amlm5900_uartcfgs, ARRAY_SIZE(amlm5900_uartcfgs));
146 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
147 }
148
amlm5900_init_time(void)149 static void __init amlm5900_init_time(void)
150 {
151 s3c2410_init_clocks(12000000);
152 samsung_timer_init();
153 }
154
155 #ifdef CONFIG_FB_S3C2410
156 static struct s3c2410fb_display __initdata amlm5900_lcd_info = {
157 .width = 160,
158 .height = 160,
159
160 .type = S3C2410_LCDCON1_STN4,
161
162 .pixclock = 680000, /* HCLK = 100MHz */
163 .xres = 160,
164 .yres = 160,
165 .bpp = 4,
166 .left_margin = 1 << (4 + 3),
167 .right_margin = 8 << 3,
168 .hsync_len = 48,
169 .upper_margin = 0,
170 .lower_margin = 0,
171
172 .lcdcon5 = 0x00000001,
173 };
174
175 static struct s3c2410fb_mach_info __initdata amlm5900_fb_info = {
176
177 .displays = &amlm5900_lcd_info,
178 .num_displays = 1,
179 .default_display = 0,
180
181 .gpccon = 0xaaaaaaaa,
182 .gpccon_mask = 0xffffffff,
183 .gpcup = 0x0000ffff,
184 .gpcup_mask = 0xffffffff,
185
186 .gpdcon = 0xaaaaaaaa,
187 .gpdcon_mask = 0xffffffff,
188 .gpdup = 0x0000ffff,
189 .gpdup_mask = 0xffffffff,
190 };
191 #endif
192
193 static irqreturn_t
amlm5900_wake_interrupt(int irq,void * ignored)194 amlm5900_wake_interrupt(int irq, void *ignored)
195 {
196 return IRQ_HANDLED;
197 }
198
amlm5900_init_pm(void)199 static void amlm5900_init_pm(void)
200 {
201 int ret = 0;
202
203 ret = request_irq(IRQ_EINT9, &amlm5900_wake_interrupt,
204 IRQF_TRIGGER_RISING | IRQF_SHARED,
205 "amlm5900_wakeup", &amlm5900_wake_interrupt);
206 if (ret != 0) {
207 printk(KERN_ERR "AML-M5900: no wakeup irq, %d?\n", ret);
208 } else {
209 enable_irq_wake(IRQ_EINT9);
210 /* configure the suspend/resume status pin */
211 s3c_gpio_cfgpin(S3C2410_GPF(2), S3C2410_GPIO_OUTPUT);
212 s3c_gpio_setpull(S3C2410_GPF(2), S3C_GPIO_PULL_UP);
213 }
214 }
amlm5900_init(void)215 static void __init amlm5900_init(void)
216 {
217 amlm5900_init_pm();
218 #ifdef CONFIG_FB_S3C2410
219 s3c24xx_fb_set_platdata(&amlm5900_fb_info);
220 #endif
221 s3c_i2c0_set_platdata(NULL);
222 platform_add_devices(amlm5900_devices, ARRAY_SIZE(amlm5900_devices));
223 }
224
225 MACHINE_START(AML_M5900, "AML_M5900")
226 .atag_offset = 0x100,
227 .map_io = amlm5900_map_io,
228 .init_irq = s3c2410_init_irq,
229 .init_machine = amlm5900_init,
230 .init_time = amlm5900_init_time,
231 MACHINE_END
232