1 /* linux/arch/arm/mach-s3c2440/mach-osiris.c
3 * Copyright (c) 2005-2008 Simtec Electronics
4 * http://armlinux.simtec.co.uk/
5 * Ben Dooks <ben@simtec.co.uk>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/types.h>
14 #include <linux/interrupt.h>
15 #include <linux/list.h>
16 #include <linux/timer.h>
17 #include <linux/init.h>
18 #include <linux/gpio.h>
19 #include <linux/device.h>
20 #include <linux/syscore_ops.h>
21 #include <linux/serial_core.h>
22 #include <linux/clk.h>
23 #include <linux/i2c.h>
26 #include <linux/i2c/tps65010.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/irq.h>
32 #include <mach/osiris-map.h>
33 #include <mach/osiris-cpld.h>
35 #include <mach/hardware.h>
37 #include <asm/mach-types.h>
39 #include <plat/cpu-freq.h>
40 #include <plat/regs-serial.h>
41 #include <mach/regs-gpio.h>
42 #include <mach/regs-mem.h>
43 #include <mach/regs-lcd.h>
44 #include <plat/nand.h>
47 #include <linux/mtd/mtd.h>
48 #include <linux/mtd/nand.h>
49 #include <linux/mtd/nand_ecc.h>
50 #include <linux/mtd/partitions.h>
52 #include <plat/gpio-cfg.h>
53 #include <plat/clock.h>
54 #include <plat/devs.h>
57 /* onboard perihperal map */
59 static struct map_desc osiris_iodesc[] __initdata = {
60 /* ISA IO areas (may be over-written later) */
63 .virtual = (u32)S3C24XX_VA_ISA_BYTE,
64 .pfn = __phys_to_pfn(S3C2410_CS5),
68 .virtual = (u32)S3C24XX_VA_ISA_WORD,
69 .pfn = __phys_to_pfn(S3C2410_CS5),
74 /* CPLD control registers */
77 .virtual = (u32)OSIRIS_VA_CTRL0,
78 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL0),
82 .virtual = (u32)OSIRIS_VA_CTRL1,
83 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL1),
87 .virtual = (u32)OSIRIS_VA_CTRL2,
88 .pfn = __phys_to_pfn(OSIRIS_PA_CTRL2),
92 .virtual = (u32)OSIRIS_VA_IDREG,
93 .pfn = __phys_to_pfn(OSIRIS_PA_IDREG),
99 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
100 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
101 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
103 static struct s3c2410_uartcfg osiris_uartcfgs[] __initdata = {
110 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
118 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
126 .clk_sel = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
130 /* NAND Flash on Osiris board */
132 static int external_map[] = { 2 };
133 static int chip0_map[] = { 0 };
134 static int chip1_map[] = { 1 };
136 static struct mtd_partition __initdata osiris_default_nand_part[] = {
138 .name = "Boot Agent",
144 .size = SZ_4M - SZ_16K,
150 .size = SZ_32M - SZ_4M,
155 .size = MTDPART_SIZ_FULL,
159 static struct mtd_partition __initdata osiris_default_nand_part_large[] = {
161 .name = "Boot Agent",
167 .size = SZ_4M - SZ_128K,
173 .size = SZ_32M - SZ_4M,
178 .size = MTDPART_SIZ_FULL,
182 /* the Osiris has 3 selectable slots for nand-flash, the two
183 * on-board chip areas, as well as the external slot.
185 * Note, there is no current hot-plug support for the External
189 static struct s3c2410_nand_set __initdata osiris_nand_sets[] = {
193 .nr_map = external_map,
194 .options = NAND_SCAN_SILENT_NODEV,
195 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
196 .partitions = osiris_default_nand_part,
202 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
203 .partitions = osiris_default_nand_part,
209 .options = NAND_SCAN_SILENT_NODEV,
210 .nr_partitions = ARRAY_SIZE(osiris_default_nand_part),
211 .partitions = osiris_default_nand_part,
215 static void osiris_nand_select(struct s3c2410_nand_set *set, int slot)
219 slot = set->nr_map[slot] & 3;
221 pr_debug("osiris_nand: selecting slot %d (set %p,%p)\n",
222 slot, set, set->nr_map);
224 tmp = __raw_readb(OSIRIS_VA_CTRL0);
225 tmp &= ~OSIRIS_CTRL0_NANDSEL;
228 pr_debug("osiris_nand: ctrl0 now %02x\n", tmp);
230 __raw_writeb(tmp, OSIRIS_VA_CTRL0);
233 static struct s3c2410_platform_nand __initdata osiris_nand_info = {
237 .nr_sets = ARRAY_SIZE(osiris_nand_sets),
238 .sets = osiris_nand_sets,
239 .select_chip = osiris_nand_select,
242 /* PCMCIA control and configuration */
244 static struct resource osiris_pcmcia_resource[] = {
248 .flags = IORESOURCE_MEM,
253 .flags = IORESOURCE_MEM,
257 static struct platform_device osiris_pcmcia = {
258 .name = "osiris-pcmcia",
260 .num_resources = ARRAY_SIZE(osiris_pcmcia_resource),
261 .resource = osiris_pcmcia_resource,
264 /* Osiris power management device */
267 static unsigned char pm_osiris_ctrl0;
269 static int osiris_pm_suspend(void)
273 pm_osiris_ctrl0 = __raw_readb(OSIRIS_VA_CTRL0);
274 tmp = pm_osiris_ctrl0 & ~OSIRIS_CTRL0_NANDSEL;
276 /* ensure correct NAND slot is selected on resume */
277 if ((pm_osiris_ctrl0 & OSIRIS_CTRL0_BOOT_INT) == 0)
280 __raw_writeb(tmp, OSIRIS_VA_CTRL0);
282 /* ensure that an nRESET is not generated on resume. */
283 s3c2410_gpio_setpin(S3C2410_GPA(21), 1);
284 s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPIO_OUTPUT);
289 static void osiris_pm_resume(void)
291 if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
292 __raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
294 __raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
296 s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
300 #define osiris_pm_suspend NULL
301 #define osiris_pm_resume NULL
304 static struct syscore_ops osiris_pm_syscore_ops = {
305 .suspend = osiris_pm_suspend,
306 .resume = osiris_pm_resume,
309 /* Link for DVS driver to TPS65011 */
311 static void osiris_tps_release(struct device *dev)
313 /* static device, do not need to release anything */
316 static struct platform_device osiris_tps_device = {
317 .name = "osiris-dvs",
319 .dev.release = osiris_tps_release,
322 static int osiris_tps_setup(struct i2c_client *client, void *context)
324 osiris_tps_device.dev.parent = &client->dev;
325 return platform_device_register(&osiris_tps_device);
328 static int osiris_tps_remove(struct i2c_client *client, void *context)
330 platform_device_unregister(&osiris_tps_device);
334 static struct tps65010_board osiris_tps_board = {
335 .base = -1, /* GPIO can go anywhere at the moment */
336 .setup = osiris_tps_setup,
337 .teardown = osiris_tps_remove,
340 /* I2C devices fitted. */
342 static struct i2c_board_info osiris_i2c_devs[] __initdata = {
344 I2C_BOARD_INFO("tps65011", 0x48),
346 .platform_data = &osiris_tps_board,
350 /* Standard Osiris devices */
352 static struct platform_device *osiris_devices[] __initdata = {
359 static struct clk *osiris_clocks[] __initdata = {
367 static struct s3c_cpufreq_board __initdata osiris_cpufreq = {
368 .refresh = 7800, /* refresh period is 7.8usec */
373 static void __init osiris_map_io(void)
377 /* initialise the clocks */
379 s3c24xx_dclk0.parent = &clk_upll;
380 s3c24xx_dclk0.rate = 12*1000*1000;
382 s3c24xx_dclk1.parent = &clk_upll;
383 s3c24xx_dclk1.rate = 24*1000*1000;
385 s3c24xx_clkout0.parent = &s3c24xx_dclk0;
386 s3c24xx_clkout1.parent = &s3c24xx_dclk1;
388 s3c24xx_uclk.parent = &s3c24xx_clkout1;
390 s3c24xx_register_clocks(osiris_clocks, ARRAY_SIZE(osiris_clocks));
392 s3c24xx_init_io(osiris_iodesc, ARRAY_SIZE(osiris_iodesc));
393 s3c24xx_init_clocks(0);
394 s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
396 /* check for the newer revision boards with large page nand */
398 if ((__raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK) >= 4) {
399 printk(KERN_INFO "OSIRIS-B detected (revision %d)\n",
400 __raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK);
401 osiris_nand_sets[0].partitions = osiris_default_nand_part_large;
402 osiris_nand_sets[0].nr_partitions = ARRAY_SIZE(osiris_default_nand_part_large);
404 /* write-protect line to the NAND */
405 s3c2410_gpio_setpin(S3C2410_GPA(0), 1);
408 /* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
410 local_irq_save(flags);
411 __raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
412 local_irq_restore(flags);
415 static void __init osiris_init(void)
417 register_syscore_ops(&osiris_pm_syscore_ops);
419 s3c_i2c0_set_platdata(NULL);
420 s3c_nand_set_platdata(&osiris_nand_info);
422 s3c_cpufreq_setboard(&osiris_cpufreq);
424 i2c_register_board_info(0, osiris_i2c_devs,
425 ARRAY_SIZE(osiris_i2c_devs));
427 platform_add_devices(osiris_devices, ARRAY_SIZE(osiris_devices));
430 MACHINE_START(OSIRIS, "Simtec-OSIRIS")
431 /* Maintainer: Ben Dooks <ben@simtec.co.uk> */
432 .atag_offset = 0x100,
433 .map_io = osiris_map_io,
434 .init_irq = s3c24xx_init_irq,
435 .init_machine = osiris_init,
436 .timer = &s3c24xx_timer,