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Linux/arch/arm/mach-s3c/mach-amlm5900.c

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  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 
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 
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
208 amlm5900_wake_interrupt(int irq, void *ignored)
209 {
210         return IRQ_HANDLED;
211 }
212 
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 }
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 

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