2 * Copyright (c) 2005-2008 Simtec Electronics
3 * http://armlinux.simtec.co.uk/
4 * Ben Dooks <ben@simtec.co.uk>
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.
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/timer.h>
16 #include <linux/init.h>
17 #include <linux/gpio.h>
18 #include <linux/device.h>
19 #include <linux/syscore_ops.h>
20 #include <linux/serial_core.h>
21 #include <linux/serial_s3c.h>
22 #include <linux/clk.h>
23 #include <linux/i2c.h>
25 #include <linux/platform_device.h>
27 #include <linux/i2c/tps65010.h>
29 #include <asm/mach-types.h>
30 #include <asm/mach/arch.h>
31 #include <asm/mach/map.h>
32 #include <asm/mach/irq.h>
35 #include <linux/platform_data/mtd-nand-s3c2410.h>
36 #include <linux/platform_data/i2c-s3c2410.h>
38 #include <linux/mtd/mtd.h>
39 #include <linux/mtd/nand.h>
40 #include <linux/mtd/nand_ecc.h>
41 #include <linux/mtd/partitions.h>
44 #include <plat/cpu-freq.h>
45 #include <plat/devs.h>
46 #include <plat/gpio-cfg.h>
47 #include <plat/samsung-time.h>
49 #include <mach/hardware.h>
50 #include <mach/regs-gpio.h>
51 #include <mach/regs-lcd.h>
52 #include <mach/gpio-samsung.h>
58 /* onboard perihperal map */
60 static struct map_desc osiris_iodesc[] __initdata = {
61 /* ISA IO areas (may be over-written later) */
64 .virtual = (u32)S3C24XX_VA_ISA_BYTE,
65 .pfn = __phys_to_pfn(S3C2410_CS5),
69 .virtual = (u32)S3C24XX_VA_ISA_WORD,
70 .pfn = __phys_to_pfn(S3C2410_CS5),
75 /* CPLD control registers */
78 .virtual = (u32)OSIRIS_VA_CTRL0,
79 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL0),
83 .virtual = (u32)OSIRIS_VA_CTRL1,
84 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL1),
88 .virtual = (u32)OSIRIS_VA_CTRL2,
89 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL2),
93 .virtual = (u32)OSIRIS_VA_IDREG,
94 .pfn = __phys_to_pfn(OSIRIS_PA_IDREG),
100 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
101 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
102 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
104 static struct s3c2410_uartcfg osiris_uartcfgs[] __initdata = {
111 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
119 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
127 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
131 /* NAND Flash on Osiris board */
133 static int external_map[] = { 2 };
134 static int chip0_map[] = { 0 };
135 static int chip1_map[] = { 1 };
137 static struct mtd_partition __initdata osiris_default_nand_part[] = {
139 .name = "Boot Agent",
145 .size = SZ_4M - SZ_16K,
151 .size = SZ_32M - SZ_4M,
156 .size = MTDPART_SIZ_FULL,
160 static struct mtd_partition __initdata osiris_default_nand_part_large[] = {
162 .name = "Boot Agent",
168 .size = SZ_4M - SZ_128K,
174 .size = SZ_32M - SZ_4M,
179 .size = MTDPART_SIZ_FULL,
183 /* the Osiris has 3 selectable slots for nand-flash, the two
184 * on-board chip areas, as well as the external slot.
186 * Note, there is no current hot-plug support for the External
190 static struct s3c2410_nand_set __initdata osiris_nand_sets[] = {
194 .nr_map = external_map,
195 .options = NAND_SCAN_SILENT_NODEV,
196 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
197 .partitions = osiris_default_nand_part,
203 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
204 .partitions = osiris_default_nand_part,
210 .options = NAND_SCAN_SILENT_NODEV,
211 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
212 .partitions = osiris_default_nand_part,
216 static void osiris_nand_select(struct s3c2410_nand_set *set, int slot)
220 slot = set->nr_map[slot] & 3;
222 pr_debug("osiris_nand: selecting slot %d (set %p,%p)\n",
223 slot, set, set->nr_map);
225 tmp = __raw_readb(OSIRIS_VA_CTRL0);
226 tmp &= ~OSIRIS_CTRL0_NANDSEL;
229 pr_debug("osiris_nand: ctrl0 now %02x\n", tmp);
231 __raw_writeb(tmp, OSIRIS_VA_CTRL0);
234 static struct s3c2410_platform_nand __initdata osiris_nand_info = {
238 .nr_sets = ARRAY_SIZE(osiris_nand_sets),
239 .sets = osiris_nand_sets,
240 .select_chip = osiris_nand_select,
241 .ecc_mode = NAND_ECC_SOFT,
244 /* PCMCIA control and configuration */
246 static struct resource osiris_pcmcia_resource[] = {
247 [0] = DEFINE_RES_MEM(0x0f000000, SZ_1M),
248 [1] = DEFINE_RES_MEM(0x0c000000, SZ_1M),
251 static struct platform_device osiris_pcmcia = {
252 .name = "osiris-pcmcia",
254 .num_resources = ARRAY_SIZE(osiris_pcmcia_resource),
255 .resource = osiris_pcmcia_resource,
258 /* Osiris power management device */
261 static unsigned char pm_osiris_ctrl0;
263 static int osiris_pm_suspend(void)
267 pm_osiris_ctrl0 = __raw_readb(OSIRIS_VA_CTRL0);
268 tmp = pm_osiris_ctrl0 & ~OSIRIS_CTRL0_NANDSEL;
270 /* ensure correct NAND slot is selected on resume */
271 if ((pm_osiris_ctrl0 & OSIRIS_CTRL0_BOOT_INT) == 0)
274 __raw_writeb(tmp, OSIRIS_VA_CTRL0);
276 /* ensure that an nRESET is not generated on resume. */
277 gpio_request_one(S3C2410_GPA(21), GPIOF_OUT_INIT_HIGH, NULL);
278 gpio_free(S3C2410_GPA(21));
283 static void osiris_pm_resume(void)
285 if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
286 __raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
288 __raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
290 s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
294 #define osiris_pm_suspend NULL
295 #define osiris_pm_resume NULL
298 static struct syscore_ops osiris_pm_syscore_ops = {
299 .suspend = osiris_pm_suspend,
300 .resume = osiris_pm_resume,
303 /* Link for DVS driver to TPS65011 */
305 static void osiris_tps_release(struct device *dev)
307 /* static device, do not need to release anything */
310 static struct platform_device osiris_tps_device = {
311 .name = "osiris-dvs",
313 .dev.release = osiris_tps_release,
316 static int osiris_tps_setup(struct i2c_client *client, void *context)
318 osiris_tps_device.dev.parent = &client->dev;
319 return platform_device_register(&osiris_tps_device);
322 static int osiris_tps_remove(struct i2c_client *client, void *context)
324 platform_device_unregister(&osiris_tps_device);
328 static struct tps65010_board osiris_tps_board = {
329 .base = -1, /* GPIO can go anywhere at the moment */
330 .setup = osiris_tps_setup,
331 .teardown = osiris_tps_remove,
334 /* I2C devices fitted. */
336 static struct i2c_board_info osiris_i2c_devs[] __initdata = {
338 I2C_BOARD_INFO("tps65011", 0x48),
340 .platform_data = &osiris_tps_board,
344 /* Standard Osiris devices */
346 static struct platform_device *osiris_devices[] __initdata = {
347 &s3c2410_device_dclk,
354 static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
355 .refresh = 7800, /* refresh period is 7.8usec */
360 static void __init osiris_map_io(void)
364 s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
365 s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
366 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
368 /* check for the newer revision boards with large page nand */
370 if ((__raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK) >= 4) {
371 printk(KERN_INFO "OSIRIS-B detected (revision %d)\n",
372 __raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK);
373 osiris_nand_sets[0].partitions = osiris_default_nand_part_large;
374 osiris_nand_sets[0].nr_partitions = ARRAY_SIZE(osiris_default_nand_part_large);
376 /* write-protect line to the NAND */
377 gpio_request_one(S3C2410_GPA(0), GPIOF_OUT_INIT_HIGH, NULL);
378 gpio_free(S3C2410_GPA(0));
381 /* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
383 local_irq_save(flags);
384 __raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
385 local_irq_restore(flags);
388 static void __init osiris_init_time(void)
390 s3c2440_init_clocks(12000000);
391 samsung_timer_init();
394 static void __init osiris_init(void)
396 register_syscore_ops(&osiris_pm_syscore_ops);
398 s3c_i2c0_set_platdata(NULL);
399 s3c_nand_set_platdata(&osiris_nand_info);
401 s3c_cpufreq_setboard(&osiris_cpufreq);
403 i2c_register_board_info(0, osiris_i2c_devs,
404 ARRAY_SIZE(osiris_i2c_devs));
406 platform_add_devices(osiris_devices, ARRAY_SIZE(osiris_devices));
409 MACHINE_START(OSIRIS, "Simtec-OSIRIS")
410 /* Maintainer: Ben Dooks <ben@simtec.co.uk> */
411 .atag_offset = 0x100,
412 .map_io = osiris_map_io,
413 .init_irq = s3c2440_init_irq,
414 .init_machine = osiris_init,
415 .init_time = osiris_init_time,