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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-s3c24xx/mach-anubis.c

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  1 /* linux/arch/arm/mach-s3c2440/mach-anubis.c
  2  *
  3  * Copyright 2003-2009 Simtec Electronics
  4  *      http://armlinux.simtec.co.uk/
  5  *      Ben Dooks <ben@simtec.co.uk>
  6  *
  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.
 10 */
 11 
 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/serial_core.h>
 20 #include <linux/serial_s3c.h>
 21 #include <linux/platform_device.h>
 22 #include <linux/ata_platform.h>
 23 #include <linux/i2c.h>
 24 #include <linux/io.h>
 25 #include <linux/sm501.h>
 26 #include <linux/sm501-regs.h>
 27 
 28 #include <asm/mach/arch.h>
 29 #include <asm/mach/map.h>
 30 #include <asm/mach/irq.h>
 31 
 32 #include <mach/hardware.h>
 33 #include <asm/irq.h>
 34 #include <asm/mach-types.h>
 35 
 36 #include <mach/regs-gpio.h>
 37 #include <mach/regs-lcd.h>
 38 #include <mach/gpio-samsung.h>
 39 #include <linux/platform_data/mtd-nand-s3c2410.h>
 40 #include <linux/platform_data/i2c-s3c2410.h>
 41 
 42 #include <linux/mtd/mtd.h>
 43 #include <linux/mtd/nand.h>
 44 #include <linux/mtd/nand_ecc.h>
 45 #include <linux/mtd/partitions.h>
 46 
 47 #include <net/ax88796.h>
 48 
 49 #include <plat/devs.h>
 50 #include <plat/cpu.h>
 51 #include <linux/platform_data/asoc-s3c24xx_simtec.h>
 52 #include <plat/samsung-time.h>
 53 
 54 #include "anubis.h"
 55 #include "common.h"
 56 #include "simtec.h"
 57 
 58 #define COPYRIGHT ", Copyright 2005-2009 Simtec Electronics"
 59 
 60 static struct map_desc anubis_iodesc[] __initdata = {
 61   /* ISA IO areas */
 62 
 63   {
 64         .virtual        = (u32)S3C24XX_VA_ISA_BYTE,
 65         .pfn            = __phys_to_pfn(0x0),
 66         .length         = SZ_4M,
 67         .type           = MT_DEVICE,
 68   }, {
 69         .virtual        = (u32)S3C24XX_VA_ISA_WORD,
 70         .pfn            = __phys_to_pfn(0x0),
 71         .length         = SZ_4M,
 72         .type           = MT_DEVICE,
 73   },
 74 
 75   /* we could possibly compress the next set down into a set of smaller tables
 76    * pagetables, but that would mean using an L2 section, and it still means
 77    * we cannot actually feed the same register to an LDR due to 16K spacing
 78    */
 79 
 80   /* CPLD control registers */
 81 
 82   {
 83         .virtual        = (u32)ANUBIS_VA_CTRL1,
 84         .pfn            = __phys_to_pfn(ANUBIS_PA_CTRL1),
 85         .length         = SZ_4K,
 86         .type           = MT_DEVICE,
 87   }, {
 88         .virtual        = (u32)ANUBIS_VA_IDREG,
 89         .pfn            = __phys_to_pfn(ANUBIS_PA_IDREG),
 90         .length         = SZ_4K,
 91         .type           = MT_DEVICE,
 92   },
 93 };
 94 
 95 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
 96 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
 97 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
 98 
 99 static struct s3c2410_uartcfg anubis_uartcfgs[] __initdata = {
100         [0] = {
101                 .hwport      = 0,
102                 .flags       = 0,
103                 .ucon        = UCON,
104                 .ulcon       = ULCON,
105                 .ufcon       = UFCON,
106                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
107         },
108         [1] = {
109                 .hwport      = 2,
110                 .flags       = 0,
111                 .ucon        = UCON,
112                 .ulcon       = ULCON,
113                 .ufcon       = UFCON,
114                 .clk_sel        = S3C2410_UCON_CLKSEL1 | S3C2410_UCON_CLKSEL2,
115         },
116 };
117 
118 /* NAND Flash on Anubis board */
119 
120 static int external_map[]   = { 2 };
121 static int chip0_map[]      = { 0 };
122 static int chip1_map[]      = { 1 };
123 
124 static struct mtd_partition __initdata anubis_default_nand_part[] = {
125         [0] = {
126                 .name   = "Boot Agent",
127                 .size   = SZ_16K,
128                 .offset = 0,
129         },
130         [1] = {
131                 .name   = "/boot",
132                 .size   = SZ_4M - SZ_16K,
133                 .offset = SZ_16K,
134         },
135         [2] = {
136                 .name   = "user1",
137                 .offset = SZ_4M,
138                 .size   = SZ_32M - SZ_4M,
139         },
140         [3] = {
141                 .name   = "user2",
142                 .offset = SZ_32M,
143                 .size   = MTDPART_SIZ_FULL,
144         }
145 };
146 
147 static struct mtd_partition __initdata anubis_default_nand_part_large[] = {
148         [0] = {
149                 .name   = "Boot Agent",
150                 .size   = SZ_128K,
151                 .offset = 0,
152         },
153         [1] = {
154                 .name   = "/boot",
155                 .size   = SZ_4M - SZ_128K,
156                 .offset = SZ_128K,
157         },
158         [2] = {
159                 .name   = "user1",
160                 .offset = SZ_4M,
161                 .size   = SZ_32M - SZ_4M,
162         },
163         [3] = {
164                 .name   = "user2",
165                 .offset = SZ_32M,
166                 .size   = MTDPART_SIZ_FULL,
167         }
168 };
169 
170 /* the Anubis has 3 selectable slots for nand-flash, the two
171  * on-board chip areas, as well as the external slot.
172  *
173  * Note, there is no current hot-plug support for the External
174  * socket.
175 */
176 
177 static struct s3c2410_nand_set __initdata anubis_nand_sets[] = {
178         [1] = {
179                 .name           = "External",
180                 .nr_chips       = 1,
181                 .nr_map         = external_map,
182                 .nr_partitions  = ARRAY_SIZE(anubis_default_nand_part),
183                 .partitions     = anubis_default_nand_part,
184         },
185         [0] = {
186                 .name           = "chip0",
187                 .nr_chips       = 1,
188                 .nr_map         = chip0_map,
189                 .nr_partitions  = ARRAY_SIZE(anubis_default_nand_part),
190                 .partitions     = anubis_default_nand_part,
191         },
192         [2] = {
193                 .name           = "chip1",
194                 .nr_chips       = 1,
195                 .nr_map         = chip1_map,
196                 .nr_partitions  = ARRAY_SIZE(anubis_default_nand_part),
197                 .partitions     = anubis_default_nand_part,
198         },
199 };
200 
201 static void anubis_nand_select(struct s3c2410_nand_set *set, int slot)
202 {
203         unsigned int tmp;
204 
205         slot = set->nr_map[slot] & 3;
206 
207         pr_debug("anubis_nand: selecting slot %d (set %p,%p)\n",
208                  slot, set, set->nr_map);
209 
210         tmp = __raw_readb(ANUBIS_VA_CTRL1);
211         tmp &= ~ANUBIS_CTRL1_NANDSEL;
212         tmp |= slot;
213 
214         pr_debug("anubis_nand: ctrl1 now %02x\n", tmp);
215 
216         __raw_writeb(tmp, ANUBIS_VA_CTRL1);
217 }
218 
219 static struct s3c2410_platform_nand __initdata anubis_nand_info = {
220         .tacls          = 25,
221         .twrph0         = 55,
222         .twrph1         = 40,
223         .nr_sets        = ARRAY_SIZE(anubis_nand_sets),
224         .sets           = anubis_nand_sets,
225         .select_chip    = anubis_nand_select,
226 };
227 
228 /* IDE channels */
229 
230 static struct pata_platform_info anubis_ide_platdata = {
231         .ioport_shift   = 5,
232 };
233 
234 static struct resource anubis_ide0_resource[] = {
235         [0] = DEFINE_RES_MEM(S3C2410_CS3, 8 * 32),
236         [2] = DEFINE_RES_MEM(S3C2410_CS3 + (1 << 26) + (6 * 32), 32),
237         [3] = DEFINE_RES_IRQ(ANUBIS_IRQ_IDE0),
238 };
239 
240 static struct platform_device anubis_device_ide0 = {
241         .name           = "pata_platform",
242         .id             = 0,
243         .num_resources  = ARRAY_SIZE(anubis_ide0_resource),
244         .resource       = anubis_ide0_resource,
245         .dev    = {
246                 .platform_data = &anubis_ide_platdata,
247                 .coherent_dma_mask = ~0,
248         },
249 };
250 
251 static struct resource anubis_ide1_resource[] = {
252         [0] = DEFINE_RES_MEM(S3C2410_CS4, 8 * 32),
253         [1] = DEFINE_RES_MEM(S3C2410_CS4 + (1 << 26) + (6 * 32), 32),
254         [2] = DEFINE_RES_IRQ(ANUBIS_IRQ_IDE0),
255 };
256 
257 static struct platform_device anubis_device_ide1 = {
258         .name           = "pata_platform",
259         .id             = 1,
260         .num_resources  = ARRAY_SIZE(anubis_ide1_resource),
261         .resource       = anubis_ide1_resource,
262         .dev    = {
263                 .platform_data = &anubis_ide_platdata,
264                 .coherent_dma_mask = ~0,
265         },
266 };
267 
268 /* Asix AX88796 10/100 ethernet controller */
269 
270 static struct ax_plat_data anubis_asix_platdata = {
271         .flags          = AXFLG_MAC_FROMDEV,
272         .wordlength     = 2,
273         .dcr_val        = 0x48,
274         .rcr_val        = 0x40,
275 };
276 
277 static struct resource anubis_asix_resource[] = {
278         [0] = DEFINE_RES_MEM(S3C2410_CS5, 0x20 * 0x20),
279         [1] = DEFINE_RES_IRQ(ANUBIS_IRQ_ASIX),
280 };
281 
282 static struct platform_device anubis_device_asix = {
283         .name           = "ax88796",
284         .id             = 0,
285         .num_resources  = ARRAY_SIZE(anubis_asix_resource),
286         .resource       = anubis_asix_resource,
287         .dev            = {
288                 .platform_data = &anubis_asix_platdata,
289         }
290 };
291 
292 /* SM501 */
293 
294 static struct resource anubis_sm501_resource[] = {
295         [0] = DEFINE_RES_MEM(S3C2410_CS2, SZ_8M),
296         [1] = DEFINE_RES_MEM(S3C2410_CS2 + SZ_64M - SZ_2M, SZ_2M),
297         [2] = DEFINE_RES_IRQ(IRQ_EINT0),
298 };
299 
300 static struct sm501_initdata anubis_sm501_initdata = {
301         .gpio_high      = {
302                 .set    = 0x3F000000,           /* 24bit panel */
303                 .mask   = 0x0,
304         },
305         .misc_timing    = {
306                 .set    = 0x010100,             /* SDRAM timing */
307                 .mask   = 0x1F1F00,
308         },
309         .misc_control   = {
310                 .set    = SM501_MISC_PNL_24BIT,
311                 .mask   = 0,
312         },
313 
314         .devices        = SM501_USE_GPIO,
315 
316         /* set the SDRAM and bus clocks */
317         .mclk           = 72 * MHZ,
318         .m1xclk         = 144 * MHZ,
319 };
320 
321 static struct sm501_platdata_gpio_i2c anubis_sm501_gpio_i2c[] = {
322         [0] = {
323                 .bus_num        = 1,
324                 .pin_scl        = 44,
325                 .pin_sda        = 45,
326         },
327         [1] = {
328                 .bus_num        = 2,
329                 .pin_scl        = 40,
330                 .pin_sda        = 41,
331         },
332 };
333 
334 static struct sm501_platdata anubis_sm501_platdata = {
335         .init           = &anubis_sm501_initdata,
336         .gpio_base      = -1,
337         .gpio_i2c       = anubis_sm501_gpio_i2c,
338         .gpio_i2c_nr    = ARRAY_SIZE(anubis_sm501_gpio_i2c),
339 };
340 
341 static struct platform_device anubis_device_sm501 = {
342         .name           = "sm501",
343         .id             = 0,
344         .num_resources  = ARRAY_SIZE(anubis_sm501_resource),
345         .resource       = anubis_sm501_resource,
346         .dev            = {
347                 .platform_data = &anubis_sm501_platdata,
348         },
349 };
350 
351 /* Standard Anubis devices */
352 
353 static struct platform_device *anubis_devices[] __initdata = {
354         &s3c2410_device_dclk,
355         &s3c_device_ohci,
356         &s3c_device_wdt,
357         &s3c_device_adc,
358         &s3c_device_i2c0,
359         &s3c_device_rtc,
360         &s3c_device_nand,
361         &anubis_device_ide0,
362         &anubis_device_ide1,
363         &anubis_device_asix,
364         &anubis_device_sm501,
365 };
366 
367 /* I2C devices. */
368 
369 static struct i2c_board_info anubis_i2c_devs[] __initdata = {
370         {
371                 I2C_BOARD_INFO("tps65011", 0x48),
372                 .irq    = IRQ_EINT20,
373         }
374 };
375 
376 /* Audio setup */
377 static struct s3c24xx_audio_simtec_pdata __initdata anubis_audio = {
378         .have_mic       = 1,
379         .have_lout      = 1,
380         .output_cdclk   = 1,
381         .use_mpllin     = 1,
382         .amp_gpio       = S3C2410_GPB(2),
383         .amp_gain[0]    = S3C2410_GPD(10),
384         .amp_gain[1]    = S3C2410_GPD(11),
385 };
386 
387 static void __init anubis_map_io(void)
388 {
389         s3c24xx_init_io(anubis_iodesc, ARRAY_SIZE(anubis_iodesc));
390         s3c24xx_init_uarts(anubis_uartcfgs, ARRAY_SIZE(anubis_uartcfgs));
391         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
392 
393         /* check for the newer revision boards with large page nand */
394 
395         if ((__raw_readb(ANUBIS_VA_IDREG) & ANUBIS_IDREG_REVMASK) >= 4) {
396                 printk(KERN_INFO "ANUBIS-B detected (revision %d)\n",
397                        __raw_readb(ANUBIS_VA_IDREG) & ANUBIS_IDREG_REVMASK);
398                 anubis_nand_sets[0].partitions = anubis_default_nand_part_large;
399                 anubis_nand_sets[0].nr_partitions = ARRAY_SIZE(anubis_default_nand_part_large);
400         } else {
401                 /* ensure that the GPIO is setup */
402                 gpio_request_one(S3C2410_GPA(0), GPIOF_OUT_INIT_HIGH, NULL);
403                 gpio_free(S3C2410_GPA(0));
404         }
405 }
406 
407 static void __init anubis_init_time(void)
408 {
409         s3c2440_init_clocks(12000000);
410         samsung_timer_init();
411 }
412 
413 static void __init anubis_init(void)
414 {
415         s3c_i2c0_set_platdata(NULL);
416         s3c_nand_set_platdata(&anubis_nand_info);
417         simtec_audio_add(NULL, false, &anubis_audio);
418 
419         platform_add_devices(anubis_devices, ARRAY_SIZE(anubis_devices));
420 
421         i2c_register_board_info(0, anubis_i2c_devs,
422                                 ARRAY_SIZE(anubis_i2c_devs));
423 }
424 
425 
426 MACHINE_START(ANUBIS, "Simtec-Anubis")
427         /* Maintainer: Ben Dooks <ben@simtec.co.uk> */
428         .atag_offset    = 0x100,
429         .map_io         = anubis_map_io,
430         .init_machine   = anubis_init,
431         .init_irq       = s3c2440_init_irq,
432         .init_time      = anubis_init_time,
433 MACHINE_END
434 

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