[ARM] 3848/1: pxafb: Add option of fixing video modes and spitz QVGA mode support
[linux-3.10.git] / arch / arm / mach-pxa / generic.c
1 /*
2  *  linux/arch/arm/mach-pxa/generic.c
3  *
4  *  Author:     Nicolas Pitre
5  *  Created:    Jun 15, 2001
6  *  Copyright:  MontaVista Software Inc.
7  *
8  * Code common to all PXA machines.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  *
14  * Since this file should be linked before any other machine specific file,
15  * the __initcall() here will be executed first.  This serves as default
16  * initialization stuff for PXA machines which can be overridden later if
17  * need be.
18  */
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
23 #include <linux/platform_device.h>
24 #include <linux/ioport.h>
25 #include <linux/pm.h>
26 #include <linux/string.h>
27
28 #include <asm/hardware.h>
29 #include <asm/irq.h>
30 #include <asm/system.h>
31 #include <asm/pgtable.h>
32 #include <asm/mach/map.h>
33
34 #include <asm/arch/pxa-regs.h>
35 #include <asm/arch/udc.h>
36 #include <asm/arch/pxafb.h>
37 #include <asm/arch/mmc.h>
38 #include <asm/arch/irda.h>
39 #include <asm/arch/i2c.h>
40
41 #include "generic.h"
42
43 /*
44  * Handy function to set GPIO alternate functions
45  */
46
47 void pxa_gpio_mode(int gpio_mode)
48 {
49         unsigned long flags;
50         int gpio = gpio_mode & GPIO_MD_MASK_NR;
51         int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
52         int gafr;
53
54         local_irq_save(flags);
55         if (gpio_mode & GPIO_DFLT_LOW)
56                 GPCR(gpio) = GPIO_bit(gpio);
57         else if (gpio_mode & GPIO_DFLT_HIGH)
58                 GPSR(gpio) = GPIO_bit(gpio);
59         if (gpio_mode & GPIO_MD_MASK_DIR)
60                 GPDR(gpio) |= GPIO_bit(gpio);
61         else
62                 GPDR(gpio) &= ~GPIO_bit(gpio);
63         gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
64         GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
65         local_irq_restore(flags);
66 }
67
68 EXPORT_SYMBOL(pxa_gpio_mode);
69
70 /*
71  * Routine to safely enable or disable a clock in the CKEN
72  */
73 void pxa_set_cken(int clock, int enable)
74 {
75         unsigned long flags;
76         local_irq_save(flags);
77
78         if (enable)
79                 CKEN |= clock;
80         else
81                 CKEN &= ~clock;
82
83         local_irq_restore(flags);
84 }
85
86 EXPORT_SYMBOL(pxa_set_cken);
87
88 /*
89  * Intel PXA2xx internal register mapping.
90  *
91  * Note 1: not all PXA2xx variants implement all those addresses.
92  *
93  * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
94  *         and cache flush area.
95  */
96 static struct map_desc standard_io_desc[] __initdata = {
97         {       /* Devs */
98                 .virtual        =  0xf2000000,
99                 .pfn            = __phys_to_pfn(0x40000000),
100                 .length         = 0x02000000,
101                 .type           = MT_DEVICE
102         }, {    /* LCD */
103                 .virtual        =  0xf4000000,
104                 .pfn            = __phys_to_pfn(0x44000000),
105                 .length         = 0x00100000,
106                 .type           = MT_DEVICE
107         }, {    /* Mem Ctl */
108                 .virtual        =  0xf6000000,
109                 .pfn            = __phys_to_pfn(0x48000000),
110                 .length         = 0x00100000,
111                 .type           = MT_DEVICE
112         }, {    /* USB host */
113                 .virtual        =  0xf8000000,
114                 .pfn            = __phys_to_pfn(0x4c000000),
115                 .length         = 0x00100000,
116                 .type           = MT_DEVICE
117         }, {    /* Camera */
118                 .virtual        =  0xfa000000,
119                 .pfn            = __phys_to_pfn(0x50000000),
120                 .length         = 0x00100000,
121                 .type           = MT_DEVICE
122         }, {    /* IMem ctl */
123                 .virtual        =  0xfe000000,
124                 .pfn            = __phys_to_pfn(0x58000000),
125                 .length         = 0x00100000,
126                 .type           = MT_DEVICE
127         }, {    /* UNCACHED_PHYS_0 */
128                 .virtual        = 0xff000000,
129                 .pfn            = __phys_to_pfn(0x00000000),
130                 .length         = 0x00100000,
131                 .type           = MT_DEVICE
132         }
133 };
134
135 void __init pxa_map_io(void)
136 {
137         iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
138         get_clk_frequency_khz(1);
139 }
140
141
142 static struct resource pxamci_resources[] = {
143         [0] = {
144                 .start  = 0x41100000,
145                 .end    = 0x41100fff,
146                 .flags  = IORESOURCE_MEM,
147         },
148         [1] = {
149                 .start  = IRQ_MMC,
150                 .end    = IRQ_MMC,
151                 .flags  = IORESOURCE_IRQ,
152         },
153 };
154
155 static u64 pxamci_dmamask = 0xffffffffUL;
156
157 static struct platform_device pxamci_device = {
158         .name           = "pxa2xx-mci",
159         .id             = -1,
160         .dev            = {
161                 .dma_mask = &pxamci_dmamask,
162                 .coherent_dma_mask = 0xffffffff,
163         },
164         .num_resources  = ARRAY_SIZE(pxamci_resources),
165         .resource       = pxamci_resources,
166 };
167
168 void __init pxa_set_mci_info(struct pxamci_platform_data *info)
169 {
170         pxamci_device.dev.platform_data = info;
171 }
172
173
174 static struct pxa2xx_udc_mach_info pxa_udc_info;
175
176 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
177 {
178         memcpy(&pxa_udc_info, info, sizeof *info);
179 }
180
181 static struct resource pxa2xx_udc_resources[] = {
182         [0] = {
183                 .start  = 0x40600000,
184                 .end    = 0x4060ffff,
185                 .flags  = IORESOURCE_MEM,
186         },
187         [1] = {
188                 .start  = IRQ_USB,
189                 .end    = IRQ_USB,
190                 .flags  = IORESOURCE_IRQ,
191         },
192 };
193
194 static u64 udc_dma_mask = ~(u32)0;
195
196 static struct platform_device udc_device = {
197         .name           = "pxa2xx-udc",
198         .id             = -1,
199         .resource       = pxa2xx_udc_resources,
200         .num_resources  = ARRAY_SIZE(pxa2xx_udc_resources),
201         .dev            =  {
202                 .platform_data  = &pxa_udc_info,
203                 .dma_mask       = &udc_dma_mask,
204         }
205 };
206
207 static struct resource pxafb_resources[] = {
208         [0] = {
209                 .start  = 0x44000000,
210                 .end    = 0x4400ffff,
211                 .flags  = IORESOURCE_MEM,
212         },
213         [1] = {
214                 .start  = IRQ_LCD,
215                 .end    = IRQ_LCD,
216                 .flags  = IORESOURCE_IRQ,
217         },
218 };
219
220 static u64 fb_dma_mask = ~(u64)0;
221
222 static struct platform_device pxafb_device = {
223         .name           = "pxa2xx-fb",
224         .id             = -1,
225         .dev            = {
226                 .dma_mask       = &fb_dma_mask,
227                 .coherent_dma_mask = 0xffffffff,
228         },
229         .num_resources  = ARRAY_SIZE(pxafb_resources),
230         .resource       = pxafb_resources,
231 };
232
233 void __init set_pxa_fb_info(struct pxafb_mach_info *info)
234 {
235         pxafb_device.dev.platform_data = info;
236 }
237
238 void __init set_pxa_fb_parent(struct device *parent_dev)
239 {
240         pxafb_device.dev.parent = parent_dev;
241 }
242
243 static struct platform_device ffuart_device = {
244         .name           = "pxa2xx-uart",
245         .id             = 0,
246 };
247 static struct platform_device btuart_device = {
248         .name           = "pxa2xx-uart",
249         .id             = 1,
250 };
251 static struct platform_device stuart_device = {
252         .name           = "pxa2xx-uart",
253         .id             = 2,
254 };
255 static struct platform_device hwuart_device = {
256         .name           = "pxa2xx-uart",
257         .id             = 3,
258 };
259
260 static struct resource i2c_resources[] = {
261         {
262                 .start  = 0x40301680,
263                 .end    = 0x403016a3,
264                 .flags  = IORESOURCE_MEM,
265         }, {
266                 .start  = IRQ_I2C,
267                 .end    = IRQ_I2C,
268                 .flags  = IORESOURCE_IRQ,
269         },
270 };
271
272 static struct platform_device i2c_device = {
273         .name           = "pxa2xx-i2c",
274         .id             = 0,
275         .resource       = i2c_resources,
276         .num_resources  = ARRAY_SIZE(i2c_resources),
277 };
278
279 void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
280 {
281         i2c_device.dev.platform_data = info;
282 }
283
284 static struct resource i2s_resources[] = {
285         {
286                 .start  = 0x40400000,
287                 .end    = 0x40400083,
288                 .flags  = IORESOURCE_MEM,
289         }, {
290                 .start  = IRQ_I2S,
291                 .end    = IRQ_I2S,
292                 .flags  = IORESOURCE_IRQ,
293         },
294 };
295
296 static struct platform_device i2s_device = {
297         .name           = "pxa2xx-i2s",
298         .id             = -1,
299         .resource       = i2s_resources,
300         .num_resources  = ARRAY_SIZE(i2s_resources),
301 };
302
303 static u64 pxaficp_dmamask = ~(u32)0;
304
305 static struct platform_device pxaficp_device = {
306         .name           = "pxa2xx-ir",
307         .id             = -1,
308         .dev            = {
309                 .dma_mask = &pxaficp_dmamask,
310                 .coherent_dma_mask = 0xffffffff,
311         },
312 };
313
314 void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
315 {
316         pxaficp_device.dev.platform_data = info;
317 }
318
319 static struct platform_device pxartc_device = {
320         .name           = "sa1100-rtc",
321         .id             = -1,
322 };
323
324 static struct platform_device *devices[] __initdata = {
325         &pxamci_device,
326         &udc_device,
327         &pxafb_device,
328         &ffuart_device,
329         &btuart_device,
330         &stuart_device,
331         &pxaficp_device,
332         &i2c_device,
333         &i2s_device,
334         &pxartc_device,
335 };
336
337 static int __init pxa_init(void)
338 {
339         int cpuid, ret;
340
341         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
342         if (ret)
343                 return ret;
344
345         /* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
346         cpuid = read_cpuid(CPUID_ID);
347         if (((cpuid >> 4) & 0xfff) == 0x2d0 ||
348             ((cpuid >> 4) & 0xfff) == 0x290)
349                 ret = platform_device_register(&hwuart_device);
350
351         return ret;
352 }
353
354 subsys_initcall(pxa_init);