ARM: 6910/1: MTD: physmap: let set_vpp() pass a platform_device instead of a map_info
[pandora-kernel.git] / arch / arm / mach-realview / core.c
1 /*
2  *  linux/arch/arm/mach-realview/core.c
3  *
4  *  Copyright (C) 1999 - 2003 ARM Limited
5  *  Copyright (C) 2000 Deep Blue Solutions Ltd
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 as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20  */
21 #include <linux/init.h>
22 #include <linux/platform_device.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/sysdev.h>
25 #include <linux/interrupt.h>
26 #include <linux/amba/bus.h>
27 #include <linux/amba/clcd.h>
28 #include <linux/io.h>
29 #include <linux/smsc911x.h>
30 #include <linux/ata_platform.h>
31 #include <linux/amba/mmci.h>
32 #include <linux/gfp.h>
33 #include <linux/clkdev.h>
34 #include <linux/mtd/physmap.h>
35
36 #include <asm/system.h>
37 #include <mach/hardware.h>
38 #include <asm/irq.h>
39 #include <asm/leds.h>
40 #include <asm/mach-types.h>
41 #include <asm/hardware/arm_timer.h>
42 #include <asm/hardware/icst.h>
43
44 #include <asm/mach/arch.h>
45 #include <asm/mach/irq.h>
46 #include <asm/mach/map.h>
47
48 #include <asm/hardware/gic.h>
49
50 #include <mach/platform.h>
51 #include <mach/irqs.h>
52 #include <asm/hardware/timer-sp.h>
53
54 #include <plat/clcd.h>
55 #include <plat/sched_clock.h>
56
57 #include "core.h"
58
59 #ifdef CONFIG_ZONE_DMA
60 /*
61  * Adjust the zones if there are restrictions for DMA access.
62  */
63 void __init realview_adjust_zones(unsigned long *size, unsigned long *hole)
64 {
65         unsigned long dma_size = SZ_256M >> PAGE_SHIFT;
66
67         if (!machine_is_realview_pbx() || size[0] <= dma_size)
68                 return;
69
70         size[ZONE_NORMAL] = size[0] - dma_size;
71         size[ZONE_DMA] = dma_size;
72         hole[ZONE_NORMAL] = hole[0];
73         hole[ZONE_DMA] = 0;
74 }
75 #endif
76
77
78 #define REALVIEW_FLASHCTRL    (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET)
79
80 static void realview_flash_set_vpp(struct platform_device *pdev, int on)
81 {
82         u32 val;
83
84         val = __raw_readl(REALVIEW_FLASHCTRL);
85         if (on)
86                 val |= REALVIEW_FLASHPROG_FLVPPEN;
87         else
88                 val &= ~REALVIEW_FLASHPROG_FLVPPEN;
89         __raw_writel(val, REALVIEW_FLASHCTRL);
90 }
91
92 static struct physmap_flash_data realview_flash_data = {
93         .width                  = 4,
94         .set_vpp                = realview_flash_set_vpp,
95 };
96
97 struct platform_device realview_flash_device = {
98         .name                   = "physmap-flash",
99         .id                     = 0,
100         .dev                    = {
101                 .platform_data  = &realview_flash_data,
102         },
103 };
104
105 int realview_flash_register(struct resource *res, u32 num)
106 {
107         realview_flash_device.resource = res;
108         realview_flash_device.num_resources = num;
109         return platform_device_register(&realview_flash_device);
110 }
111
112 static struct smsc911x_platform_config smsc911x_config = {
113         .flags          = SMSC911X_USE_32BIT,
114         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
115         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
116         .phy_interface  = PHY_INTERFACE_MODE_MII,
117 };
118
119 static struct platform_device realview_eth_device = {
120         .name           = "smsc911x",
121         .id             = 0,
122         .num_resources  = 2,
123 };
124
125 int realview_eth_register(const char *name, struct resource *res)
126 {
127         if (name)
128                 realview_eth_device.name = name;
129         realview_eth_device.resource = res;
130         if (strcmp(realview_eth_device.name, "smsc911x") == 0)
131                 realview_eth_device.dev.platform_data = &smsc911x_config;
132
133         return platform_device_register(&realview_eth_device);
134 }
135
136 struct platform_device realview_usb_device = {
137         .name                   = "isp1760",
138         .num_resources          = 2,
139 };
140
141 int realview_usb_register(struct resource *res)
142 {
143         realview_usb_device.resource = res;
144         return platform_device_register(&realview_usb_device);
145 }
146
147 static struct pata_platform_info pata_platform_data = {
148         .ioport_shift           = 1,
149 };
150
151 static struct resource pata_resources[] = {
152         [0] = {
153                 .start          = REALVIEW_CF_BASE,
154                 .end            = REALVIEW_CF_BASE + 0xff,
155                 .flags          = IORESOURCE_MEM,
156         },
157         [1] = {
158                 .start          = REALVIEW_CF_BASE + 0x100,
159                 .end            = REALVIEW_CF_BASE + SZ_4K - 1,
160                 .flags          = IORESOURCE_MEM,
161         },
162 };
163
164 struct platform_device realview_cf_device = {
165         .name                   = "pata_platform",
166         .id                     = -1,
167         .num_resources          = ARRAY_SIZE(pata_resources),
168         .resource               = pata_resources,
169         .dev                    = {
170                 .platform_data  = &pata_platform_data,
171         },
172 };
173
174 static struct resource realview_i2c_resource = {
175         .start          = REALVIEW_I2C_BASE,
176         .end            = REALVIEW_I2C_BASE + SZ_4K - 1,
177         .flags          = IORESOURCE_MEM,
178 };
179
180 struct platform_device realview_i2c_device = {
181         .name           = "versatile-i2c",
182         .id             = 0,
183         .num_resources  = 1,
184         .resource       = &realview_i2c_resource,
185 };
186
187 static struct i2c_board_info realview_i2c_board_info[] = {
188         {
189                 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
190         },
191 };
192
193 static int __init realview_i2c_init(void)
194 {
195         return i2c_register_board_info(0, realview_i2c_board_info,
196                                        ARRAY_SIZE(realview_i2c_board_info));
197 }
198 arch_initcall(realview_i2c_init);
199
200 #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)
201
202 /*
203  * This is only used if GPIOLIB support is disabled
204  */
205 static unsigned int realview_mmc_status(struct device *dev)
206 {
207         struct amba_device *adev = container_of(dev, struct amba_device, dev);
208         u32 mask;
209
210         if (machine_is_realview_pb1176()) {
211                 static bool inserted = false;
212
213                 /*
214                  * The PB1176 does not have the status register,
215                  * assume it is inserted at startup, then invert
216                  * for each call so card insertion/removal will
217                  * be detected anyway. This will not be called if
218                  * GPIO on PL061 is active, which is the proper
219                  * way to do this on the PB1176.
220                  */
221                 inserted = !inserted;
222                 return inserted ? 0 : 1;
223         }
224
225         if (adev->res.start == REALVIEW_MMCI0_BASE)
226                 mask = 1;
227         else
228                 mask = 2;
229
230         return readl(REALVIEW_SYSMCI) & mask;
231 }
232
233 struct mmci_platform_data realview_mmc0_plat_data = {
234         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
235         .status         = realview_mmc_status,
236         .gpio_wp        = 17,
237         .gpio_cd        = 16,
238         .cd_invert      = true,
239 };
240
241 struct mmci_platform_data realview_mmc1_plat_data = {
242         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
243         .status         = realview_mmc_status,
244         .gpio_wp        = 19,
245         .gpio_cd        = 18,
246         .cd_invert      = true,
247 };
248
249 /*
250  * Clock handling
251  */
252 static const struct icst_params realview_oscvco_params = {
253         .ref            = 24000000,
254         .vco_max        = ICST307_VCO_MAX,
255         .vco_min        = ICST307_VCO_MIN,
256         .vd_min         = 4 + 8,
257         .vd_max         = 511 + 8,
258         .rd_min         = 1 + 2,
259         .rd_max         = 127 + 2,
260         .s2div          = icst307_s2div,
261         .idx2s          = icst307_idx2s,
262 };
263
264 static void realview_oscvco_set(struct clk *clk, struct icst_vco vco)
265 {
266         void __iomem *sys_lock = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_LOCK_OFFSET;
267         u32 val;
268
269         val = readl(clk->vcoreg) & ~0x7ffff;
270         val |= vco.v | (vco.r << 9) | (vco.s << 16);
271
272         writel(0xa05f, sys_lock);
273         writel(val, clk->vcoreg);
274         writel(0, sys_lock);
275 }
276
277 static const struct clk_ops oscvco_clk_ops = {
278         .round  = icst_clk_round,
279         .set    = icst_clk_set,
280         .setvco = realview_oscvco_set,
281 };
282
283 static struct clk oscvco_clk = {
284         .ops    = &oscvco_clk_ops,
285         .params = &realview_oscvco_params,
286 };
287
288 /*
289  * These are fixed clocks.
290  */
291 static struct clk ref24_clk = {
292         .rate   = 24000000,
293 };
294
295 static struct clk dummy_apb_pclk;
296
297 static struct clk_lookup lookups[] = {
298         {       /* Bus clock */
299                 .con_id         = "apb_pclk",
300                 .clk            = &dummy_apb_pclk,
301         }, {    /* UART0 */
302                 .dev_id         = "dev:uart0",
303                 .clk            = &ref24_clk,
304         }, {    /* UART1 */
305                 .dev_id         = "dev:uart1",
306                 .clk            = &ref24_clk,
307         }, {    /* UART2 */
308                 .dev_id         = "dev:uart2",
309                 .clk            = &ref24_clk,
310         }, {    /* UART3 */
311                 .dev_id         = "fpga:uart3",
312                 .clk            = &ref24_clk,
313         }, {    /* UART3 is on the dev chip in PB1176 */
314                 .dev_id         = "dev:uart3",
315                 .clk            = &ref24_clk,
316         }, {    /* UART4 only exists in PB1176 */
317                 .dev_id         = "fpga:uart4",
318                 .clk            = &ref24_clk,
319         }, {    /* KMI0 */
320                 .dev_id         = "fpga:kmi0",
321                 .clk            = &ref24_clk,
322         }, {    /* KMI1 */
323                 .dev_id         = "fpga:kmi1",
324                 .clk            = &ref24_clk,
325         }, {    /* MMC0 */
326                 .dev_id         = "fpga:mmc0",
327                 .clk            = &ref24_clk,
328         }, {    /* CLCD is in the PB1176 and EB DevChip */
329                 .dev_id         = "dev:clcd",
330                 .clk            = &oscvco_clk,
331         }, {    /* PB:CLCD */
332                 .dev_id         = "issp:clcd",
333                 .clk            = &oscvco_clk,
334         }, {    /* SSP */
335                 .dev_id         = "dev:ssp0",
336                 .clk            = &ref24_clk,
337         }
338 };
339
340 void __init realview_init_early(void)
341 {
342         void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
343
344         if (machine_is_realview_pb1176())
345                 oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC0_OFFSET;
346         else
347                 oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC4_OFFSET;
348
349         clkdev_add_table(lookups, ARRAY_SIZE(lookups));
350
351         versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
352 }
353
354 /*
355  * CLCD support.
356  */
357 #define SYS_CLCD_NLCDIOON       (1 << 2)
358 #define SYS_CLCD_VDDPOSSWITCH   (1 << 3)
359 #define SYS_CLCD_PWR3V5SWITCH   (1 << 4)
360 #define SYS_CLCD_ID_MASK        (0x1f << 8)
361 #define SYS_CLCD_ID_SANYO_3_8   (0x00 << 8)
362 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
363 #define SYS_CLCD_ID_EPSON_2_2   (0x02 << 8)
364 #define SYS_CLCD_ID_SANYO_2_5   (0x07 << 8)
365 #define SYS_CLCD_ID_VGA         (0x1f << 8)
366
367 /*
368  * Disable all display connectors on the interface module.
369  */
370 static void realview_clcd_disable(struct clcd_fb *fb)
371 {
372         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
373         u32 val;
374
375         val = readl(sys_clcd);
376         val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
377         writel(val, sys_clcd);
378 }
379
380 /*
381  * Enable the relevant connector on the interface module.
382  */
383 static void realview_clcd_enable(struct clcd_fb *fb)
384 {
385         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
386         u32 val;
387
388         /*
389          * Enable the PSUs
390          */
391         val = readl(sys_clcd);
392         val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
393         writel(val, sys_clcd);
394 }
395
396 /*
397  * Detect which LCD panel is connected, and return the appropriate
398  * clcd_panel structure.  Note: we do not have any information on
399  * the required timings for the 8.4in panel, so we presently assume
400  * VGA timings.
401  */
402 static int realview_clcd_setup(struct clcd_fb *fb)
403 {
404         void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET;
405         const char *panel_name, *vga_panel_name;
406         unsigned long framesize;
407         u32 val;
408
409         if (machine_is_realview_eb()) {
410                 /* VGA, 16bpp */
411                 framesize = 640 * 480 * 2;
412                 vga_panel_name = "VGA";
413         } else {
414                 /* XVGA, 16bpp */
415                 framesize = 1024 * 768 * 2;
416                 vga_panel_name = "XVGA";
417         }
418
419         val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
420         if (val == SYS_CLCD_ID_SANYO_3_8)
421                 panel_name = "Sanyo TM38QV67A02A";
422         else if (val == SYS_CLCD_ID_SANYO_2_5)
423                 panel_name = "Sanyo QVGA Portrait";
424         else if (val == SYS_CLCD_ID_EPSON_2_2)
425                 panel_name = "Epson L2F50113T00";
426         else if (val == SYS_CLCD_ID_VGA)
427                 panel_name = vga_panel_name;
428         else {
429                 pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val);
430                 panel_name = vga_panel_name;
431         }
432
433         fb->panel = versatile_clcd_get_panel(panel_name);
434         if (!fb->panel)
435                 return -EINVAL;
436
437         return versatile_clcd_setup_dma(fb, framesize);
438 }
439
440 struct clcd_board clcd_plat_data = {
441         .name           = "RealView",
442         .caps           = CLCD_CAP_ALL,
443         .check          = clcdfb_check,
444         .decode         = clcdfb_decode,
445         .disable        = realview_clcd_disable,
446         .enable         = realview_clcd_enable,
447         .setup          = realview_clcd_setup,
448         .mmap           = versatile_clcd_mmap_dma,
449         .remove         = versatile_clcd_remove_dma,
450 };
451
452 #ifdef CONFIG_LEDS
453 #define VA_LEDS_BASE (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_LED_OFFSET)
454
455 void realview_leds_event(led_event_t ledevt)
456 {
457         unsigned long flags;
458         u32 val;
459         u32 led = 1 << smp_processor_id();
460
461         local_irq_save(flags);
462         val = readl(VA_LEDS_BASE);
463
464         switch (ledevt) {
465         case led_idle_start:
466                 val = val & ~led;
467                 break;
468
469         case led_idle_end:
470                 val = val | led;
471                 break;
472
473         case led_timer:
474                 val = val ^ REALVIEW_SYS_LED7;
475                 break;
476
477         case led_halted:
478                 val = 0;
479                 break;
480
481         default:
482                 break;
483         }
484
485         writel(val, VA_LEDS_BASE);
486         local_irq_restore(flags);
487 }
488 #endif  /* CONFIG_LEDS */
489
490 /*
491  * Where is the timer (VA)?
492  */
493 void __iomem *timer0_va_base;
494 void __iomem *timer1_va_base;
495 void __iomem *timer2_va_base;
496 void __iomem *timer3_va_base;
497
498 /*
499  * Set up the clock source and clock events devices
500  */
501 void __init realview_timer_init(unsigned int timer_irq)
502 {
503         u32 val;
504
505         /* 
506          * set clock frequency: 
507          *      REALVIEW_REFCLK is 32KHz
508          *      REALVIEW_TIMCLK is 1MHz
509          */
510         val = readl(__io_address(REALVIEW_SCTL_BASE));
511         writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) |
512                (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) | 
513                (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) |
514                (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val,
515                __io_address(REALVIEW_SCTL_BASE));
516
517         /*
518          * Initialise to a known state (all timers off)
519          */
520         writel(0, timer0_va_base + TIMER_CTRL);
521         writel(0, timer1_va_base + TIMER_CTRL);
522         writel(0, timer2_va_base + TIMER_CTRL);
523         writel(0, timer3_va_base + TIMER_CTRL);
524
525         sp804_clocksource_init(timer3_va_base);
526         sp804_clockevents_init(timer0_va_base, timer_irq);
527 }
528
529 /*
530  * Setup the memory banks.
531  */
532 void realview_fixup(struct machine_desc *mdesc, struct tag *tags, char **from,
533                     struct meminfo *meminfo)
534 {
535         /*
536          * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
537          * Half of this is mirrored at 0.
538          */
539 #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
540         meminfo->bank[0].start = 0x70000000;
541         meminfo->bank[0].size = SZ_512M;
542         meminfo->nr_banks = 1;
543 #else
544         meminfo->bank[0].start = 0;
545         meminfo->bank[0].size = SZ_256M;
546         meminfo->nr_banks = 1;
547 #endif
548 }