1/*
2 * linux/arch/arm/mach-pxa/cm-x2xx.c
3 *
4 * Copyright (C) 2008 CompuLab, Ltd.
5 * Mike Rapoport <mike@compulab.co.il>
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/platform_device.h>
13#include <linux/syscore_ops.h>
14#include <linux/irq.h>
15#include <linux/gpio.h>
16#include <linux/regulator/machine.h>
17
18#include <linux/dm9000.h>
19#include <linux/leds.h>
20
21#include <asm/mach/arch.h>
22#include <asm/mach-types.h>
23#include <asm/mach/map.h>
24
25#include <mach/pxa25x.h>
26#undef GPIO24_SSP1_SFRM
27#include <mach/pxa27x.h>
28#include <mach/audio.h>
29#include <linux/platform_data/video-pxafb.h>
30#include <mach/smemc.h>
31
32#include <asm/hardware/it8152.h>
33
34#include "generic.h"
35#include "cm-x2xx-pci.h"
36
37extern void cmx255_init(void);
38extern void cmx270_init(void);
39
40/* reserve IRQs for IT8152 */
41#define CMX2XX_NR_IRQS		(IRQ_BOARD_START + 40)
42
43/* virtual addresses for statically mapped regions */
44#define CMX2XX_VIRT_BASE	(void __iomem *)(0xe8000000)
45#define CMX2XX_IT8152_VIRT	(CMX2XX_VIRT_BASE)
46
47/* physical address if local-bus attached devices */
48#define CMX255_DM9000_PHYS_BASE (PXA_CS1_PHYS + (8 << 22))
49#define CMX270_DM9000_PHYS_BASE	(PXA_CS1_PHYS + (6 << 22))
50
51/* leds */
52#define CMX255_GPIO_RED		(27)
53#define CMX255_GPIO_GREEN	(32)
54#define CMX270_GPIO_RED		(93)
55#define CMX270_GPIO_GREEN	(94)
56
57/* GPIO IRQ usage */
58#define GPIO22_ETHIRQ		(22)
59#define GPIO10_ETHIRQ		(10)
60#define CMX255_GPIO_IT8152_IRQ	(0)
61#define CMX270_GPIO_IT8152_IRQ	(22)
62
63#define CMX255_ETHIRQ		PXA_GPIO_TO_IRQ(GPIO22_ETHIRQ)
64#define CMX270_ETHIRQ		PXA_GPIO_TO_IRQ(GPIO10_ETHIRQ)
65
66#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
67static struct resource cmx255_dm9000_resource[] = {
68	[0] = {
69		.start = CMX255_DM9000_PHYS_BASE,
70		.end   = CMX255_DM9000_PHYS_BASE + 3,
71		.flags = IORESOURCE_MEM,
72	},
73	[1] = {
74		.start = CMX255_DM9000_PHYS_BASE + 4,
75		.end   = CMX255_DM9000_PHYS_BASE + 4 + 500,
76		.flags = IORESOURCE_MEM,
77	},
78	[2] = {
79		.start = CMX255_ETHIRQ,
80		.end   = CMX255_ETHIRQ,
81		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
82	}
83};
84
85static struct resource cmx270_dm9000_resource[] = {
86	[0] = {
87		.start = CMX270_DM9000_PHYS_BASE,
88		.end   = CMX270_DM9000_PHYS_BASE + 3,
89		.flags = IORESOURCE_MEM,
90	},
91	[1] = {
92		.start = CMX270_DM9000_PHYS_BASE + 8,
93		.end   = CMX270_DM9000_PHYS_BASE + 8 + 500,
94		.flags = IORESOURCE_MEM,
95	},
96	[2] = {
97		.start = CMX270_ETHIRQ,
98		.end   = CMX270_ETHIRQ,
99		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
100	}
101};
102
103static struct dm9000_plat_data cmx270_dm9000_platdata = {
104	.flags		= DM9000_PLATF_32BITONLY | DM9000_PLATF_NO_EEPROM,
105};
106
107static struct platform_device cmx2xx_dm9000_device = {
108	.name		= "dm9000",
109	.id		= 0,
110	.num_resources	= ARRAY_SIZE(cmx270_dm9000_resource),
111	.dev		= {
112		.platform_data = &cmx270_dm9000_platdata,
113	}
114};
115
116static void __init cmx2xx_init_dm9000(void)
117{
118	if (cpu_is_pxa25x())
119		cmx2xx_dm9000_device.resource = cmx255_dm9000_resource;
120	else
121		cmx2xx_dm9000_device.resource = cmx270_dm9000_resource;
122	platform_device_register(&cmx2xx_dm9000_device);
123}
124#else
125static inline void cmx2xx_init_dm9000(void) {}
126#endif
127
128/* UCB1400 touchscreen controller */
129#if defined(CONFIG_TOUCHSCREEN_UCB1400) || defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
130static struct platform_device cmx2xx_ts_device = {
131	.name		= "ucb1400_core",
132	.id		= -1,
133};
134
135static void __init cmx2xx_init_touchscreen(void)
136{
137	platform_device_register(&cmx2xx_ts_device);
138}
139#else
140static inline void cmx2xx_init_touchscreen(void) {}
141#endif
142
143/* CM-X270 LEDs */
144#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
145static struct gpio_led cmx2xx_leds[] = {
146	[0] = {
147		.name = "cm-x2xx:red",
148		.default_trigger = "nand-disk",
149		.active_low = 1,
150	},
151	[1] = {
152		.name = "cm-x2xx:green",
153		.default_trigger = "heartbeat",
154		.active_low = 1,
155	},
156};
157
158static struct gpio_led_platform_data cmx2xx_gpio_led_pdata = {
159	.num_leds = ARRAY_SIZE(cmx2xx_leds),
160	.leds = cmx2xx_leds,
161};
162
163static struct platform_device cmx2xx_led_device = {
164	.name		= "leds-gpio",
165	.id		= -1,
166	.dev		= {
167		.platform_data = &cmx2xx_gpio_led_pdata,
168	},
169};
170
171static void __init cmx2xx_init_leds(void)
172{
173	if (cpu_is_pxa25x()) {
174		cmx2xx_leds[0].gpio = CMX255_GPIO_RED;
175		cmx2xx_leds[1].gpio = CMX255_GPIO_GREEN;
176	} else {
177		cmx2xx_leds[0].gpio = CMX270_GPIO_RED;
178		cmx2xx_leds[1].gpio = CMX270_GPIO_GREEN;
179	}
180	platform_device_register(&cmx2xx_led_device);
181}
182#else
183static inline void cmx2xx_init_leds(void) {}
184#endif
185
186#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
187/*
188  Display definitions
189  keep these for backwards compatibility, although symbolic names (as
190  e.g. in lpd270.c) looks better
191*/
192#define MTYPE_STN320x240	0
193#define MTYPE_TFT640x480	1
194#define MTYPE_CRT640x480	2
195#define MTYPE_CRT800x600	3
196#define MTYPE_TFT320x240	6
197#define MTYPE_STN640x480	7
198
199static struct pxafb_mode_info generic_stn_320x240_mode = {
200	.pixclock	= 76923,
201	.bpp		= 8,
202	.xres		= 320,
203	.yres		= 240,
204	.hsync_len	= 3,
205	.vsync_len	= 2,
206	.left_margin	= 3,
207	.upper_margin	= 0,
208	.right_margin	= 3,
209	.lower_margin	= 0,
210	.sync		= (FB_SYNC_HOR_HIGH_ACT |
211			   FB_SYNC_VERT_HIGH_ACT),
212	.cmap_greyscale = 0,
213};
214
215static struct pxafb_mach_info generic_stn_320x240 = {
216	.modes		= &generic_stn_320x240_mode,
217	.num_modes	= 1,
218	.lcd_conn	= LCD_COLOR_STN_8BPP | LCD_PCLK_EDGE_FALL |\
219			  LCD_AC_BIAS_FREQ(0xff),
220	.cmap_inverse	= 0,
221	.cmap_static	= 0,
222};
223
224static struct pxafb_mode_info generic_tft_640x480_mode = {
225	.pixclock	= 38461,
226	.bpp		= 8,
227	.xres		= 640,
228	.yres		= 480,
229	.hsync_len	= 60,
230	.vsync_len	= 2,
231	.left_margin	= 70,
232	.upper_margin	= 10,
233	.right_margin	= 70,
234	.lower_margin	= 5,
235	.sync		= 0,
236	.cmap_greyscale = 0,
237};
238
239static struct pxafb_mach_info generic_tft_640x480 = {
240	.modes		= &generic_tft_640x480_mode,
241	.num_modes	= 1,
242	.lcd_conn	= LCD_COLOR_TFT_8BPP | LCD_PCLK_EDGE_FALL |\
243			  LCD_AC_BIAS_FREQ(0xff),
244	.cmap_inverse	= 0,
245	.cmap_static	= 0,
246};
247
248static struct pxafb_mode_info generic_crt_640x480_mode = {
249	.pixclock	= 38461,
250	.bpp		= 8,
251	.xres		= 640,
252	.yres		= 480,
253	.hsync_len	= 63,
254	.vsync_len	= 2,
255	.left_margin	= 81,
256	.upper_margin	= 33,
257	.right_margin	= 16,
258	.lower_margin	= 10,
259	.sync		= (FB_SYNC_HOR_HIGH_ACT |
260			   FB_SYNC_VERT_HIGH_ACT),
261	.cmap_greyscale = 0,
262};
263
264static struct pxafb_mach_info generic_crt_640x480 = {
265	.modes		= &generic_crt_640x480_mode,
266	.num_modes	= 1,
267	.lcd_conn	= LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
268	.cmap_inverse	= 0,
269	.cmap_static	= 0,
270};
271
272static struct pxafb_mode_info generic_crt_800x600_mode = {
273	.pixclock	= 28846,
274	.bpp		= 8,
275	.xres		= 800,
276	.yres	  	= 600,
277	.hsync_len	= 63,
278	.vsync_len	= 2,
279	.left_margin	= 26,
280	.upper_margin	= 21,
281	.right_margin	= 26,
282	.lower_margin	= 11,
283	.sync		= (FB_SYNC_HOR_HIGH_ACT |
284			   FB_SYNC_VERT_HIGH_ACT),
285	.cmap_greyscale = 0,
286};
287
288static struct pxafb_mach_info generic_crt_800x600 = {
289	.modes		= &generic_crt_800x600_mode,
290	.num_modes	= 1,
291	.lcd_conn	= LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
292	.cmap_inverse	= 0,
293	.cmap_static	= 0,
294};
295
296static struct pxafb_mode_info generic_tft_320x240_mode = {
297	.pixclock	= 134615,
298	.bpp		= 16,
299	.xres		= 320,
300	.yres		= 240,
301	.hsync_len	= 63,
302	.vsync_len	= 7,
303	.left_margin	= 75,
304	.upper_margin	= 0,
305	.right_margin	= 15,
306	.lower_margin	= 15,
307	.sync		= 0,
308	.cmap_greyscale = 0,
309};
310
311static struct pxafb_mach_info generic_tft_320x240 = {
312	.modes		= &generic_tft_320x240_mode,
313	.num_modes	= 1,
314	.lcd_conn	= LCD_COLOR_TFT_16BPP | LCD_AC_BIAS_FREQ(0xff),
315	.cmap_inverse	= 0,
316	.cmap_static	= 0,
317};
318
319static struct pxafb_mode_info generic_stn_640x480_mode = {
320	.pixclock	= 57692,
321	.bpp		= 8,
322	.xres		= 640,
323	.yres		= 480,
324	.hsync_len	= 4,
325	.vsync_len	= 2,
326	.left_margin	= 10,
327	.upper_margin	= 5,
328	.right_margin	= 10,
329	.lower_margin	= 5,
330	.sync		= (FB_SYNC_HOR_HIGH_ACT |
331			   FB_SYNC_VERT_HIGH_ACT),
332	.cmap_greyscale = 0,
333};
334
335static struct pxafb_mach_info generic_stn_640x480 = {
336	.modes		= &generic_stn_640x480_mode,
337	.num_modes	= 1,
338	.lcd_conn	= LCD_COLOR_STN_8BPP | LCD_AC_BIAS_FREQ(0xff),
339	.cmap_inverse	= 0,
340	.cmap_static	= 0,
341};
342
343static struct pxafb_mach_info *cmx2xx_display = &generic_crt_640x480;
344
345static int __init cmx2xx_set_display(char *str)
346{
347	int disp_type = simple_strtol(str, NULL, 0);
348	switch (disp_type) {
349	case MTYPE_STN320x240:
350		cmx2xx_display = &generic_stn_320x240;
351		break;
352	case MTYPE_TFT640x480:
353		cmx2xx_display = &generic_tft_640x480;
354		break;
355	case MTYPE_CRT640x480:
356		cmx2xx_display = &generic_crt_640x480;
357		break;
358	case MTYPE_CRT800x600:
359		cmx2xx_display = &generic_crt_800x600;
360		break;
361	case MTYPE_TFT320x240:
362		cmx2xx_display = &generic_tft_320x240;
363		break;
364	case MTYPE_STN640x480:
365		cmx2xx_display = &generic_stn_640x480;
366		break;
367	default: /* fallback to CRT 640x480 */
368		cmx2xx_display = &generic_crt_640x480;
369		break;
370	}
371	return 1;
372}
373
374/*
375   This should be done really early to get proper configuration for
376   frame buffer.
377   Indeed, pxafb parameters can be used istead, but CM-X2XX bootloader
378   has limitied line length for kernel command line, and also it will
379   break compatibitlty with proprietary releases already in field.
380*/
381__setup("monitor=", cmx2xx_set_display);
382
383static void __init cmx2xx_init_display(void)
384{
385	pxa_set_fb_info(NULL, cmx2xx_display);
386}
387#else
388static inline void cmx2xx_init_display(void) {}
389#endif
390
391#ifdef CONFIG_PM
392static unsigned long sleep_save_msc[10];
393
394static int cmx2xx_suspend(void)
395{
396	cmx2xx_pci_suspend();
397
398	/* save MSC registers */
399	sleep_save_msc[0] = __raw_readl(MSC0);
400	sleep_save_msc[1] = __raw_readl(MSC1);
401	sleep_save_msc[2] = __raw_readl(MSC2);
402
403	/* setup power saving mode registers */
404	PCFR = 0x0;
405	PSLR = 0xff400000;
406	PMCR  = 0x00000005;
407	PWER  = 0x80000000;
408	PFER  = 0x00000000;
409	PRER  = 0x00000000;
410	PGSR0 = 0xC0018800;
411	PGSR1 = 0x004F0002;
412	PGSR2 = 0x6021C000;
413	PGSR3 = 0x00020000;
414
415	return 0;
416}
417
418static void cmx2xx_resume(void)
419{
420	cmx2xx_pci_resume();
421
422	/* restore MSC registers */
423	__raw_writel(sleep_save_msc[0], MSC0);
424	__raw_writel(sleep_save_msc[1], MSC1);
425	__raw_writel(sleep_save_msc[2], MSC2);
426}
427
428static struct syscore_ops cmx2xx_pm_syscore_ops = {
429	.resume = cmx2xx_resume,
430	.suspend = cmx2xx_suspend,
431};
432
433static int __init cmx2xx_pm_init(void)
434{
435	register_syscore_ops(&cmx2xx_pm_syscore_ops);
436
437	return 0;
438}
439#else
440static int __init cmx2xx_pm_init(void) { return 0; }
441#endif
442
443#if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
444static void __init cmx2xx_init_ac97(void)
445{
446	pxa_set_ac97_info(NULL);
447}
448#else
449static inline void cmx2xx_init_ac97(void) {}
450#endif
451
452static void __init cmx2xx_init(void)
453{
454	pxa_set_ffuart_info(NULL);
455	pxa_set_btuart_info(NULL);
456	pxa_set_stuart_info(NULL);
457
458	cmx2xx_pm_init();
459
460	if (cpu_is_pxa25x())
461		cmx255_init();
462	else
463		cmx270_init();
464
465	cmx2xx_init_dm9000();
466	cmx2xx_init_display();
467	cmx2xx_init_ac97();
468	cmx2xx_init_touchscreen();
469	cmx2xx_init_leds();
470
471	regulator_has_full_constraints();
472}
473
474static void __init cmx2xx_init_irq(void)
475{
476	if (cpu_is_pxa25x()) {
477		pxa25x_init_irq();
478		cmx2xx_pci_init_irq(CMX255_GPIO_IT8152_IRQ);
479	} else {
480		pxa27x_init_irq();
481		cmx2xx_pci_init_irq(CMX270_GPIO_IT8152_IRQ);
482	}
483}
484
485#ifdef CONFIG_PCI
486/* Map PCI companion statically */
487static struct map_desc cmx2xx_io_desc[] __initdata = {
488	[0] = { /* PCI bridge */
489		.virtual	= (unsigned long)CMX2XX_IT8152_VIRT,
490		.pfn		= __phys_to_pfn(PXA_CS4_PHYS),
491		.length		= SZ_64M,
492		.type		= MT_DEVICE
493	},
494};
495
496static void __init cmx2xx_map_io(void)
497{
498	if (cpu_is_pxa25x())
499		pxa25x_map_io();
500
501	if (cpu_is_pxa27x())
502		pxa27x_map_io();
503
504	iotable_init(cmx2xx_io_desc, ARRAY_SIZE(cmx2xx_io_desc));
505
506	it8152_base_address = CMX2XX_IT8152_VIRT;
507}
508#else
509static void __init cmx2xx_map_io(void)
510{
511	if (cpu_is_pxa25x())
512		pxa25x_map_io();
513
514	if (cpu_is_pxa27x())
515		pxa27x_map_io();
516}
517#endif
518
519MACHINE_START(ARMCORE, "Compulab CM-X2XX")
520	.atag_offset	= 0x100,
521	.map_io		= cmx2xx_map_io,
522	.nr_irqs	= CMX2XX_NR_IRQS,
523	.init_irq	= cmx2xx_init_irq,
524	/* NOTE: pxa25x_handle_irq() works on PXA27x w/o camera support */
525	.handle_irq	= pxa25x_handle_irq,
526	.init_time	= pxa_timer_init,
527	.init_machine	= cmx2xx_init,
528#ifdef CONFIG_PCI
529	.dma_zone_size	= SZ_64M,
530#endif
531	.restart	= pxa_restart,
532MACHINE_END
533