aboutsummaryrefslogblamecommitdiffstats
path: root/arch/arm/mach-pxa/cm-x270.c
blob: 6d4416a4f378807e17b886862d012acbe51fca3c (plain) (tree)
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491






























                                                                       
                                 
                                 









































































































































































































































































































































































































































































                                                                      



                                                               
                

                                                                
 
                   






                                                                     
                                                        


                                          
                                                         






















































                                                                     
                     











































































                                                                             
/*
 * linux/arch/arm/mach-pxa/cm-x270.c
 *
 * Copyright (C) 2007 CompuLab, Ltd.
 * Mike Rapoport <mike@compulab.co.il>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/types.h>
#include <linux/pm.h>
#include <linux/fb.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/sysdev.h>
#include <linux/io.h>
#include <linux/delay.h>

#include <linux/dm9000.h>
#include <linux/rtc-v3020.h>
#include <linux/serial_8250.h>

#include <video/mbxfb.h>

#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>

#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/pxa2xx-gpio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/ohci.h>
#include <asm/arch/mmc.h>
#include <asm/arch/bitfield.h>
#include <asm/arch/cm-x270.h>

#include <asm/hardware/it8152.h>

#include "generic.h"
#include "cm-x270-pci.h"

#define RTC_PHYS_BASE		(PXA_CS1_PHYS + (5 << 22))
#define DM9000_PHYS_BASE	(PXA_CS1_PHYS + (6 << 22))

static struct resource cmx270_dm9k_resource[] = {
	[0] = {
		.start = DM9000_PHYS_BASE,
		.end   = DM9000_PHYS_BASE + 4,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = DM9000_PHYS_BASE + 8,
		.end   = DM9000_PHYS_BASE + 8 + 500,
		.flags = IORESOURCE_MEM,
	},
	[2] = {
		.start = CMX270_ETHIRQ,
		.end   = CMX270_ETHIRQ,
		.flags = IORESOURCE_IRQ,
	}
};

/* for the moment we limit ourselves to 32bit IO until some
 * better IO routines can be written and tested
 */
static struct dm9000_plat_data cmx270_dm9k_platdata = {
	.flags		= DM9000_PLATF_32BITONLY,
};

/* Ethernet device */
static struct platform_device cmx270_device_dm9k = {
	.name		= "dm9000",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(cmx270_dm9k_resource),
	.resource	= cmx270_dm9k_resource,
	.dev		= {
		.platform_data = &cmx270_dm9k_platdata,
	}
};

/* audio device */
static struct platform_device cmx270_audio_device = {
	.name		= "pxa2xx-ac97",
	.id		= -1,
};

/* touchscreen controller */
static struct platform_device cmx270_ts_device = {
	.name		= "ucb1400_ts",
	.id		= -1,
};

/* RTC */
static struct resource cmx270_v3020_resource[] = {
	[0] = {
		.start = RTC_PHYS_BASE,
		.end   = RTC_PHYS_BASE + 4,
		.flags = IORESOURCE_MEM,
	},
};

struct v3020_platform_data cmx270_v3020_pdata = {
	.leftshift = 16,
};

static struct platform_device cmx270_rtc_device = {
	.name		= "v3020",
	.num_resources	= ARRAY_SIZE(cmx270_v3020_resource),
	.resource	= cmx270_v3020_resource,
	.id		= -1,
	.dev		= {
		.platform_data = &cmx270_v3020_pdata,
	}
};

/*
 * CM-X270 LEDs
 */
static struct platform_device cmx270_led_device = {
	.name		= "cm-x270-led",
	.id		= -1,
};

/* 2700G graphics */
static u64 fb_dma_mask = ~(u64)0;

static struct resource cmx270_2700G_resource[] = {
	/* frame buffer memory including ODFB and External SDRAM */
	[0] = {
		.start = MARATHON_PHYS,
		.end   = MARATHON_PHYS + 0x02000000,
		.flags = IORESOURCE_MEM,
	},
	/* Marathon registers */
	[1] = {
		.start = MARATHON_PHYS + 0x03fe0000,
		.end   = MARATHON_PHYS + 0x03ffffff,
		.flags = IORESOURCE_MEM,
	},
};

static unsigned long save_lcd_regs[10];

static int cmx270_marathon_probe(struct fb_info *fb)
{
	/* save PXA-270 pin settings before enabling 2700G */
	save_lcd_regs[0] = GPDR1;
	save_lcd_regs[1] = GPDR2;
	save_lcd_regs[2] = GAFR1_U;
	save_lcd_regs[3] = GAFR2_L;
	save_lcd_regs[4] = GAFR2_U;

	/* Disable PXA-270 on-chip controller driving pins */
	GPDR1 &= ~(0xfc000000);
	GPDR2 &= ~(0x00c03fff);
	GAFR1_U &= ~(0xfff00000);
	GAFR2_L &= ~(0x0fffffff);
	GAFR2_U &= ~(0x0000f000);
	return 0;
}

static int cmx270_marathon_remove(struct fb_info *fb)
{
	GPDR1 =   save_lcd_regs[0];
	GPDR2 =   save_lcd_regs[1];
	GAFR1_U = save_lcd_regs[2];
	GAFR2_L = save_lcd_regs[3];
	GAFR2_U = save_lcd_regs[4];
	return 0;
}

static struct mbxfb_platform_data cmx270_2700G_data = {
	.xres = {
		.min = 240,
		.max = 1200,
		.defval = 640,
	},
	.yres = {
		.min = 240,
		.max = 1200,
		.defval = 480,
	},
	.bpp = {
		.min = 16,
		.max = 32,
		.defval = 16,
	},
	.memsize = 8*1024*1024,
	.probe = cmx270_marathon_probe,
	.remove = cmx270_marathon_remove,
};

static struct platform_device cmx270_2700G = {
	.name		= "mbx-fb",
	.dev		= {
		.platform_data	= &cmx270_2700G_data,
		.dma_mask	= &fb_dma_mask,
		.coherent_dma_mask = 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(cmx270_2700G_resource),
	.resource	= cmx270_2700G_resource,
	.id		= -1,
};

static u64 ata_dma_mask = ~(u64)0;

static struct platform_device cmx270_ata = {
	.name = "pata_cm_x270",
	.id = -1,
	.dev		= {
		.dma_mask	= &ata_dma_mask,
		.coherent_dma_mask = 0xffffffff,
	},
};

/* platform devices */
static struct platform_device *platform_devices[] __initdata = {
	&cmx270_device_dm9k,
	&cmx270_audio_device,
	&cmx270_rtc_device,
	&cmx270_2700G,
	&cmx270_led_device,
	&cmx270_ts_device,
	&cmx270_ata,
};

/* Map PCI companion and IDE/General Purpose CS statically */
static struct map_desc cmx270_io_desc[] __initdata = {
	[0] = { /* IDE/general purpose space */
		.virtual	= CMX270_IDE104_VIRT,
		.pfn		= __phys_to_pfn(CMX270_IDE104_PHYS),
		.length		= SZ_64M - SZ_8M,
		.type		= MT_DEVICE
	},
	[1] = { /* PCI bridge */
		.virtual	= CMX270_IT8152_VIRT,
		.pfn		= __phys_to_pfn(CMX270_IT8152_PHYS),
		.length		= SZ_64M,
		.type		= MT_DEVICE
	},
};

/*
  Display definitions
  keep these for backwards compatibility, although symbolic names (as
  e.g. in lpd270.c) looks better
*/
#define MTYPE_STN320x240	0
#define MTYPE_TFT640x480	1
#define MTYPE_CRT640x480	2
#define MTYPE_CRT800x600	3
#define MTYPE_TFT320x240	6
#define MTYPE_STN640x480	7

static struct pxafb_mode_info generic_stn_320x240_mode = {
	.pixclock	= 76923,
	.bpp		= 8,
	.xres		= 320,
	.yres		= 240,
	.hsync_len	= 3,
	.vsync_len	= 2,
	.left_margin	= 3,
	.upper_margin	= 0,
	.right_margin	= 3,
	.lower_margin	= 0,
	.sync		= (FB_SYNC_HOR_HIGH_ACT |
			   FB_SYNC_VERT_HIGH_ACT),
	.cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_stn_320x240 = {
	.modes		= &generic_stn_320x240_mode,
	.num_modes	= 1,
	.lccr0		= 0,
	.lccr3		= (LCCR3_PixClkDiv(0x03) |
			   LCCR3_Acb(0xff) |
			   LCCR3_PCP),
	.cmap_inverse	= 0,
	.cmap_static	= 0,
};

static struct pxafb_mode_info generic_tft_640x480_mode = {
	.pixclock	= 38461,
	.bpp		= 8,
	.xres		= 640,
	.yres		= 480,
	.hsync_len	= 60,
	.vsync_len	= 2,
	.left_margin	= 70,
	.upper_margin	= 10,
	.right_margin	= 70,
	.lower_margin	= 5,
	.sync		= 0,
	.cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_tft_640x480 = {
	.modes		= &generic_tft_640x480_mode,
	.num_modes	= 1,
	.lccr0		= (LCCR0_PAS),
	.lccr3		= (LCCR3_PixClkDiv(0x01) |
			   LCCR3_Acb(0xff) |
			   LCCR3_PCP),
	.cmap_inverse	= 0,
	.cmap_static	= 0,
};

static struct pxafb_mode_info generic_crt_640x480_mode = {
	.pixclock	= 38461,
	.bpp		= 8,
	.xres		= 640,
	.yres		= 480,
	.hsync_len	= 63,
	.vsync_len	= 2,
	.left_margin	= 81,
	.upper_margin	= 33,
	.right_margin	= 16,
	.lower_margin	= 10,
	.sync		= (FB_SYNC_HOR_HIGH_ACT |
			   FB_SYNC_VERT_HIGH_ACT),
	.cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_crt_640x480 = {
	.modes		= &generic_crt_640x480_mode,
	.num_modes	= 1,
	.lccr0		= (LCCR0_PAS),
	.lccr3		= (LCCR3_PixClkDiv(0x01) |
			   LCCR3_Acb(0xff)),
	.cmap_inverse	= 0,
	.cmap_static	= 0,
};

static struct pxafb_mode_info generic_crt_800x600_mode = {
	.pixclock	= 28846,
	.bpp		= 8,
	.xres		= 800,
	.yres	  	= 600,
	.hsync_len	= 63,
	.vsync_len	= 2,
	.left_margin	= 26,
	.upper_margin	= 21,
	.right_margin	= 26,
	.lower_margin	= 11,
	.sync		= (FB_SYNC_HOR_HIGH_ACT |
			   FB_SYNC_VERT_HIGH_ACT),
	.cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_crt_800x600 = {
	.modes		= &generic_crt_800x600_mode,
	.num_modes	= 1,
	.lccr0		= (LCCR0_PAS),
	.lccr3		= (LCCR3_PixClkDiv(0x02) |
			   LCCR3_Acb(0xff)),
	.cmap_inverse	= 0,
	.cmap_static	= 0,
};

static struct pxafb_mode_info generic_tft_320x240_mode = {
	.pixclock	= 134615,
	.bpp		= 16,
	.xres		= 320,
	.yres		= 240,
	.hsync_len	= 63,
	.vsync_len	= 7,
	.left_margin	= 75,
	.upper_margin	= 0,
	.right_margin	= 15,
	.lower_margin	= 15,
	.sync		= 0,
	.cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_tft_320x240 = {
	.modes		= &generic_tft_320x240_mode,
	.num_modes	= 1,
	.lccr0		= (LCCR0_PAS),
	.lccr3		= (LCCR3_PixClkDiv(0x06) |
			   LCCR3_Acb(0xff) |
			   LCCR3_PCP),
	.cmap_inverse	= 0,
	.cmap_static	= 0,
};

static struct pxafb_mode_info generic_stn_640x480_mode = {
	.pixclock	= 57692,
	.bpp		= 8,
	.xres		= 640,
	.yres		= 480,
	.hsync_len	= 4,
	.vsync_len	= 2,
	.left_margin	= 10,
	.upper_margin	= 5,
	.right_margin	= 10,
	.lower_margin	= 5,
	.sync		= (FB_SYNC_HOR_HIGH_ACT |
			   FB_SYNC_VERT_HIGH_ACT),
	.cmap_greyscale = 0,
};

static struct pxafb_mach_info generic_stn_640x480 = {
	.modes		= &generic_stn_640x480_mode,
	.num_modes	= 1,
	.lccr0		= 0,
	.lccr3		= (LCCR3_PixClkDiv(0x02) |
			   LCCR3_Acb(0xff)),
	.cmap_inverse	= 0,
	.cmap_static	= 0,
};

static struct pxafb_mach_info *cmx270_display = &generic_crt_640x480;

static int __init cmx270_set_display(char *str)
{
	int disp_type = simple_strtol(str, NULL, 0);
	switch (disp_type) {
	case MTYPE_STN320x240:
		cmx270_display = &generic_stn_320x240;
		break;
	case MTYPE_TFT640x480:
		cmx270_display = &generic_tft_640x480;
		break;
	case MTYPE_CRT640x480:
		cmx270_display = &generic_crt_640x480;
		break;
	case MTYPE_CRT800x600:
		cmx270_display = &generic_crt_800x600;
		break;
	case MTYPE_TFT320x240:
		cmx270_display = &generic_tft_320x240;
		break;
	case MTYPE_STN640x480:
		cmx270_display = &generic_stn_640x480;
		break;
	default: /* fallback to CRT 640x480 */
		cmx270_display = &generic_crt_640x480;
		break;
	}
	return 1;
}

/*
   This should be done really early to get proper configuration for
   frame buffer.
   Indeed, pxafb parameters can be used istead, but CM-X270 bootloader
   has limitied line length for kernel command line, and also it will
   break compatibitlty with proprietary releases already in field.
*/
__setup("monitor=", cmx270_set_display);

/* PXA27x OHCI controller setup */
static int cmx270_ohci_init(struct device *dev)
{
	/* Set the Power Control Polarity Low */
	UHCHR = (UHCHR | UHCHR_PCPL) &
		~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);

	return 0;
}

static struct pxaohci_platform_data cmx270_ohci_platform_data = {
	.port_mode	= PMM_PERPORT_MODE,
	.init		= cmx270_ohci_init,
};


static int cmx270_mci_init(struct device *dev,
			   irq_handler_t cmx270_detect_int,
			   void *data)
{
	int err;

	/*
	 * setup GPIO for PXA27x MMC controller
	 */
	pxa_gpio_mode(GPIO32_MMCCLK_MD);
	pxa_gpio_mode(GPIO112_MMCCMD_MD);
	pxa_gpio_mode(GPIO92_MMCDAT0_MD);
	pxa_gpio_mode(GPIO109_MMCDAT1_MD);
	pxa_gpio_mode(GPIO110_MMCDAT2_MD);
	pxa_gpio_mode(GPIO111_MMCDAT3_MD);

	/* SB-X270 uses GPIO105 as SD power enable */
	pxa_gpio_mode(105 | GPIO_OUT);

	/* card detect IRQ on GPIO 83 */
	pxa_gpio_mode(IRQ_TO_GPIO(CMX270_MMC_IRQ));

	err = request_irq(CMX270_MMC_IRQ, cmx270_detect_int,
			  IRQF_DISABLED | IRQF_TRIGGER_FALLING,
			  "MMC card detect", data);
	if (err)
		printk(KERN_ERR "cmx270_mci_init: MMC/SD: can't"
		       " request MMC card detect IRQ\n");

	return err;
}

static void cmx270_mci_setpower(struct device *dev, unsigned int vdd)
{
	struct pxamci_platform_data *p_d = dev->platform_data;

	if ((1 << vdd) & p_d->ocr_mask) {
		printk(KERN_DEBUG "%s: on\n", __func__);
		GPCR(105) = GPIO_bit(105);
	} else {
		GPSR(105) = GPIO_bit(105);
		printk(KERN_DEBUG "%s: off\n", __func__);
	}
}

static void cmx270_mci_exit(struct device *dev, void *data)
{
	free_irq(CMX270_MMC_IRQ, data);
}

static struct pxamci_platform_data cmx270_mci_platform_data = {
	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
	.init 		= cmx270_mci_init,
	.setpower 	= cmx270_mci_setpower,
	.exit		= cmx270_mci_exit,
};

#ifdef CONFIG_PM
static unsigned long sleep_save_msc[10];

static int cmx270_suspend(struct sys_device *dev, pm_message_t state)
{
	cmx270_pci_suspend();

	/* save MSC registers */
	sleep_save_msc[0] = MSC0;
	sleep_save_msc[1] = MSC1;
	sleep_save_msc[2] = MSC2;

	/* setup power saving mode registers */
	PCFR = 0x0;
	PSLR = 0xff400000;
	PMCR  = 0x00000005;
	PWER  = 0x80000000;
	PFER  = 0x00000000;
	PRER  = 0x00000000;
	PGSR0 = 0xC0018800;
	PGSR1 = 0x004F0002;
	PGSR2 = 0x6021C000;
	PGSR3 = 0x00020000;

	return 0;
}

static int cmx270_resume(struct sys_device *dev)
{
	cmx270_pci_resume();

	/* restore MSC registers */
	MSC0 = sleep_save_msc[0];
	MSC1 = sleep_save_msc[1];
	MSC2 = sleep_save_msc[2];

	return 0;
}

static struct sysdev_class cmx270_pm_sysclass = {
	.name = "pm",
	.resume = cmx270_resume,
	.suspend = cmx270_suspend,
};

static struct sys_device cmx270_pm_device = {
	.cls = &cmx270_pm_sysclass,
};

static int __init cmx270_pm_init(void)
{
	int error;
	error = sysdev_class_register(&cmx270_pm_sysclass);
	if (error == 0)
		error = sysdev_register(&cmx270_pm_device);
	return error;
}
#else
static int __init cmx270_pm_init(void) { return 0; }
#endif

static void __init cmx270_init(void)
{
	cmx270_pm_init();

	set_pxa_fb_info(cmx270_display);

	/* register CM-X270 platform devices */
	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));

	/* set MCI and OHCI platform parameters */
	pxa_set_mci_info(&cmx270_mci_platform_data);
	pxa_set_ohci_info(&cmx270_ohci_platform_data);

	/* This enables the STUART */
	pxa_gpio_mode(GPIO46_STRXD_MD);
	pxa_gpio_mode(GPIO47_STTXD_MD);

	/* This enables the BTUART  */
	pxa_gpio_mode(GPIO42_BTRXD_MD);
	pxa_gpio_mode(GPIO43_BTTXD_MD);
	pxa_gpio_mode(GPIO44_BTCTS_MD);
	pxa_gpio_mode(GPIO45_BTRTS_MD);
}

static void __init cmx270_init_irq(void)
{
	pxa27x_init_irq();


	cmx270_pci_init_irq();

	/* Setup interrupt for dm9000 */
	pxa_gpio_mode(IRQ_TO_GPIO(CMX270_ETHIRQ));
	set_irq_type(CMX270_ETHIRQ, IRQT_RISING);

	/* Setup interrupt for 2700G */
	pxa_gpio_mode(IRQ_TO_GPIO(CMX270_GFXIRQ));
	set_irq_type(CMX270_GFXIRQ, IRQT_FALLING);
}

static void __init cmx270_map_io(void)
{
	pxa_map_io();
	iotable_init(cmx270_io_desc, ARRAY_SIZE(cmx270_io_desc));
}


MACHINE_START(ARMCORE, "Compulab CM-x270")
	.boot_params	= 0xa0000100,
	.phys_io	= 0x40000000,
	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
	.map_io		= cmx270_map_io,
	.init_irq	= cmx270_init_irq,
	.timer		= &pxa_timer,
	.init_machine	= cmx270_init,
MACHINE_END