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/machine.h>
17 #include <linux/gpio.h>
18 #include <linux/device.h>
19 #include <linux/platform_device.h>
20 #include <linux/proc_fs.h>
21 #include <linux/serial_core.h>
22 #include <linux/serial_s3c.h>
23 #include <linux/io.h>
24
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 #include <asm/mach/irq.h>
28 #include <asm/mach/flash.h>
29
30 #include <asm/irq.h>
31 #include <asm/mach-types.h>
32 #include <linux/platform_data/fb-s3c2410.h>
33
34 #include "regs-gpio.h"
35 #include "gpio-samsung.h"
36
37 #include <linux/platform_data/i2c-s3c2410.h>
38 #include "devs.h"
39 #include "cpu.h"
40 #include "gpio-cfg.h"
41
42 #include <linux/mtd/mtd.h>
43 #include <linux/mtd/partitions.h>
44 #include <linux/mtd/map.h>
45 #include <linux/mtd/physmap.h>
46
47 #include "s3c24xx.h"
48
49 static struct resource amlm5900_nor_resource =
50 DEFINE_RES_MEM(0x00000000, SZ_16M);
51
52 static struct mtd_partition amlm5900_mtd_partitions[] = {
53 {
54 .name = "System",
55 .size = 0x240000,
56 .offset = 0,
57 .mask_flags = MTD_WRITEABLE, /* force read-only */
58 }, {
59 .name = "Kernel",
60 .size = 0x100000,
61 .offset = MTDPART_OFS_APPEND,
62 }, {
63 .name = "Ramdisk",
64 .size = 0x300000,
65 .offset = MTDPART_OFS_APPEND,
66 }, {
67 .name = "JFFS2",
68 .size = 0x9A0000,
69 .offset = MTDPART_OFS_APPEND,
70 }, {
71 .name = "Settings",
72 .size = MTDPART_SIZ_FULL,
73 .offset = MTDPART_OFS_APPEND,
74 }
75 };
76
77 static struct physmap_flash_data amlm5900_flash_data = {
78 .width = 2,
79 .parts = amlm5900_mtd_partitions,
80 .nr_parts = ARRAY_SIZE(amlm5900_mtd_partitions),
81 };
82
83 static struct platform_device amlm5900_device_nor = {
84 .name = "physmap-flash",
85 .id = 0,
86 .dev = {
87 .platform_data = &amlm5900_flash_data,
88 },
89 .num_resources = 1,
90 .resource = &amlm5900_nor_resource,
91 };
92
93 static struct map_desc amlm5900_iodesc[] __initdata = {
94 };
95
96 #define UCON S3C2410_UCON_DEFAULT
97 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
98 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
99
100 static struct s3c2410_uartcfg amlm5900_uartcfgs[] = {
101 [0] = {
102 .hwport = 0,
103 .flags = 0,
104 .ucon = UCON,
105 .ulcon = ULCON,
106 .ufcon = UFCON,
107 },
108 [1] = {
109 .hwport = 1,
110 .flags = 0,
111 .ucon = UCON,
112 .ulcon = ULCON,
113 .ufcon = UFCON,
114 },
115 [2] = {
116 .hwport = 2,
117 .flags = 0,
118 .ucon = UCON,
119 .ulcon = ULCON,
120 .ufcon = UFCON,
121 }
122 };
123
124 static struct gpiod_lookup_table amlm5900_mmc_gpio_table = {
125 .dev_id = "s3c2410-sdi",
126 .table = {
127 /* bus pins */
128 GPIO_LOOKUP_IDX("GPIOE", 5, "bus", 0, GPIO_ACTIVE_HIGH),
129 GPIO_LOOKUP_IDX("GPIOE", 6, "bus", 1, GPIO_ACTIVE_HIGH),
130 GPIO_LOOKUP_IDX("GPIOE", 7, "bus", 2, GPIO_ACTIVE_HIGH),
131 GPIO_LOOKUP_IDX("GPIOE", 8, "bus", 3, GPIO_ACTIVE_HIGH),
132 GPIO_LOOKUP_IDX("GPIOE", 9, "bus", 4, GPIO_ACTIVE_HIGH),
133 GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH),
134 { },
135 },
136 };
137
138 static struct platform_device *amlm5900_devices[] __initdata = {
139 #ifdef CONFIG_FB_S3C2410
140 &s3c_device_lcd,
141 #endif
142 &s3c_device_adc,
143 &s3c_device_wdt,
144 &s3c_device_i2c0,
145 &s3c_device_ohci,
146 &s3c_device_rtc,
147 &s3c_device_usbgadget,
148 &s3c_device_sdi,
149 &amlm5900_device_nor,
150 };
151
amlm5900_map_io(void)152 static void __init amlm5900_map_io(void)
153 {
154 s3c24xx_init_io(amlm5900_iodesc, ARRAY_SIZE(amlm5900_iodesc));
155 s3c24xx_init_uarts(amlm5900_uartcfgs, ARRAY_SIZE(amlm5900_uartcfgs));
156 s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
157 }
158
amlm5900_init_time(void)159 static void __init amlm5900_init_time(void)
160 {
161 s3c2410_init_clocks(12000000);
162 s3c24xx_timer_init();
163 }
164
165 #ifdef CONFIG_FB_S3C2410
166 static struct s3c2410fb_display __initdata amlm5900_lcd_info = {
167 .width = 160,
168 .height = 160,
169
170 .type = S3C2410_LCDCON1_STN4,
171
172 .pixclock = 680000, /* HCLK = 100MHz */
173 .xres = 160,
174 .yres = 160,
175 .bpp = 4,
176 .left_margin = 1 << (4 + 3),
177 .right_margin = 8 << 3,
178 .hsync_len = 48,
179 .upper_margin = 0,
180 .lower_margin = 0,
181
182 .lcdcon5 = 0x00000001,
183 };
184
185 static struct s3c2410fb_mach_info __initdata amlm5900_fb_info = {
186
187 .displays = &amlm5900_lcd_info,
188 .num_displays = 1,
189 .default_display = 0,
190
191 .gpccon = 0xaaaaaaaa,
192 .gpccon_mask = 0xffffffff,
193 .gpccon_reg = S3C2410_GPCCON,
194 .gpcup = 0x0000ffff,
195 .gpcup_mask = 0xffffffff,
196 .gpcup_reg = S3C2410_GPCUP,
197
198 .gpdcon = 0xaaaaaaaa,
199 .gpdcon_mask = 0xffffffff,
200 .gpdcon_reg = S3C2410_GPDCON,
201 .gpdup = 0x0000ffff,
202 .gpdup_mask = 0xffffffff,
203 .gpdup_reg = S3C2410_GPDUP,
204 };
205 #endif
206
207 static irqreturn_t
amlm5900_wake_interrupt(int irq,void * ignored)208 amlm5900_wake_interrupt(int irq, void *ignored)
209 {
210 return IRQ_HANDLED;
211 }
212
amlm5900_init_pm(void)213 static void amlm5900_init_pm(void)
214 {
215 int ret = 0;
216
217 ret = request_irq(IRQ_EINT9, &amlm5900_wake_interrupt,
218 IRQF_TRIGGER_RISING | IRQF_SHARED,
219 "amlm5900_wakeup", &amlm5900_wake_interrupt);
220 if (ret != 0) {
221 printk(KERN_ERR "AML-M5900: no wakeup irq, %d?\n", ret);
222 } else {
223 enable_irq_wake(IRQ_EINT9);
224 /* configure the suspend/resume status pin */
225 s3c_gpio_cfgpin(S3C2410_GPF(2), S3C2410_GPIO_OUTPUT);
226 s3c_gpio_setpull(S3C2410_GPF(2), S3C_GPIO_PULL_UP);
227 }
228 }
amlm5900_init(void)229 static void __init amlm5900_init(void)
230 {
231 amlm5900_init_pm();
232 #ifdef CONFIG_FB_S3C2410
233 s3c24xx_fb_set_platdata(&amlm5900_fb_info);
234 #endif
235 s3c_i2c0_set_platdata(NULL);
236 gpiod_add_lookup_table(&amlm5900_mmc_gpio_table);
237 platform_add_devices(amlm5900_devices, ARRAY_SIZE(amlm5900_devices));
238 }
239
240 MACHINE_START(AML_M5900, "AML_M5900")
241 .atag_offset = 0x100,
242 .map_io = amlm5900_map_io,
243 .init_irq = s3c2410_init_irq,
244 .init_machine = amlm5900_init,
245 .init_time = amlm5900_init_time,
246 MACHINE_END
247