2 * linux/arch/arm/mach-pxa/generic.c
4 * Author: Nicolas Pitre
5 * Created: Jun 15, 2001
6 * Copyright: MontaVista Software Inc.
8 * Code common to all PXA machines.
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.
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
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>
26 #include <linux/string.h>
28 #include <asm/hardware.h>
30 #include <asm/system.h>
31 #include <asm/pgtable.h>
32 #include <asm/mach/map.h>
34 #include <asm/arch/pxa-regs.h>
35 #include <asm/arch/gpio.h>
36 #include <asm/arch/udc.h>
37 #include <asm/arch/pxafb.h>
38 #include <asm/arch/mmc.h>
39 #include <asm/arch/irda.h>
40 #include <asm/arch/i2c.h>
46 * Get the clock frequency as reflected by CCCR and the turbo flag.
47 * We assume these values have been applied via a fcs.
48 * If info is not 0 we also display the current settings.
50 unsigned int get_clk_frequency_khz(int info)
52 if (cpu_is_pxa21x() || cpu_is_pxa25x())
53 return pxa25x_get_clk_frequency_khz(info);
55 return pxa27x_get_clk_frequency_khz(info);
57 EXPORT_SYMBOL(get_clk_frequency_khz);
60 * Return the current memory clock frequency in units of 10kHz
62 unsigned int get_memclk_frequency_10khz(void)
64 if (cpu_is_pxa21x() || cpu_is_pxa25x())
65 return pxa25x_get_memclk_frequency_10khz();
67 return pxa27x_get_memclk_frequency_10khz();
69 EXPORT_SYMBOL(get_memclk_frequency_10khz);
72 * Return the current LCD clock frequency in units of 10kHz
74 unsigned int get_lcdclk_frequency_10khz(void)
76 if (cpu_is_pxa21x() || cpu_is_pxa25x())
77 return pxa25x_get_memclk_frequency_10khz();
79 return pxa27x_get_lcdclk_frequency_10khz();
81 EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
84 * Handy function to set GPIO alternate functions
87 int pxa_gpio_mode(int gpio_mode)
90 int gpio = gpio_mode & GPIO_MD_MASK_NR;
91 int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
94 if (gpio > PXA_LAST_GPIO)
97 local_irq_save(flags);
98 if (gpio_mode & GPIO_DFLT_LOW)
99 GPCR(gpio) = GPIO_bit(gpio);
100 else if (gpio_mode & GPIO_DFLT_HIGH)
101 GPSR(gpio) = GPIO_bit(gpio);
102 if (gpio_mode & GPIO_MD_MASK_DIR)
103 GPDR(gpio) |= GPIO_bit(gpio);
105 GPDR(gpio) &= ~GPIO_bit(gpio);
106 gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
107 GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2));
108 local_irq_restore(flags);
113 EXPORT_SYMBOL(pxa_gpio_mode);
118 int pxa_gpio_get_value(unsigned gpio)
120 return __gpio_get_value(gpio);
123 EXPORT_SYMBOL(pxa_gpio_get_value);
126 * Set output GPIO level
128 void pxa_gpio_set_value(unsigned gpio, int value)
130 __gpio_set_value(gpio, value);
133 EXPORT_SYMBOL(pxa_gpio_set_value);
136 * Routine to safely enable or disable a clock in the CKEN
138 void pxa_set_cken(int clock, int enable)
141 local_irq_save(flags);
144 CKEN |= (1 << clock);
146 CKEN &= ~(1 << clock);
148 local_irq_restore(flags);
151 EXPORT_SYMBOL(pxa_set_cken);
154 * Intel PXA2xx internal register mapping.
156 * Note 1: not all PXA2xx variants implement all those addresses.
158 * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
159 * and cache flush area.
161 static struct map_desc standard_io_desc[] __initdata = {
163 .virtual = 0xf2000000,
164 .pfn = __phys_to_pfn(0x40000000),
165 .length = 0x02000000,
168 .virtual = 0xf4000000,
169 .pfn = __phys_to_pfn(0x44000000),
170 .length = 0x00100000,
173 .virtual = 0xf6000000,
174 .pfn = __phys_to_pfn(0x48000000),
175 .length = 0x00100000,
178 .virtual = 0xf8000000,
179 .pfn = __phys_to_pfn(0x4c000000),
180 .length = 0x00100000,
183 .virtual = 0xfa000000,
184 .pfn = __phys_to_pfn(0x50000000),
185 .length = 0x00100000,
188 .virtual = 0xfe000000,
189 .pfn = __phys_to_pfn(0x58000000),
190 .length = 0x00100000,
192 }, { /* UNCACHED_PHYS_0 */
193 .virtual = 0xff000000,
194 .pfn = __phys_to_pfn(0x00000000),
195 .length = 0x00100000,
200 void __init pxa_map_io(void)
202 iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
203 get_clk_frequency_khz(1);
207 static struct resource pxamci_resources[] = {
211 .flags = IORESOURCE_MEM,
216 .flags = IORESOURCE_IRQ,
220 static u64 pxamci_dmamask = 0xffffffffUL;
222 struct platform_device pxa_device_mci = {
223 .name = "pxa2xx-mci",
226 .dma_mask = &pxamci_dmamask,
227 .coherent_dma_mask = 0xffffffff,
229 .num_resources = ARRAY_SIZE(pxamci_resources),
230 .resource = pxamci_resources,
233 void __init pxa_set_mci_info(struct pxamci_platform_data *info)
235 pxa_device_mci.dev.platform_data = info;
239 static struct pxa2xx_udc_mach_info pxa_udc_info;
241 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
243 memcpy(&pxa_udc_info, info, sizeof *info);
246 static struct resource pxa2xx_udc_resources[] = {
250 .flags = IORESOURCE_MEM,
255 .flags = IORESOURCE_IRQ,
259 static u64 udc_dma_mask = ~(u32)0;
261 struct platform_device pxa_device_udc = {
262 .name = "pxa2xx-udc",
264 .resource = pxa2xx_udc_resources,
265 .num_resources = ARRAY_SIZE(pxa2xx_udc_resources),
267 .platform_data = &pxa_udc_info,
268 .dma_mask = &udc_dma_mask,
272 static struct resource pxafb_resources[] = {
276 .flags = IORESOURCE_MEM,
281 .flags = IORESOURCE_IRQ,
285 static u64 fb_dma_mask = ~(u64)0;
287 struct platform_device pxa_device_fb = {
291 .dma_mask = &fb_dma_mask,
292 .coherent_dma_mask = 0xffffffff,
294 .num_resources = ARRAY_SIZE(pxafb_resources),
295 .resource = pxafb_resources,
298 void __init set_pxa_fb_info(struct pxafb_mach_info *info)
300 pxa_device_fb.dev.platform_data = info;
303 void __init set_pxa_fb_parent(struct device *parent_dev)
305 pxa_device_fb.dev.parent = parent_dev;
308 static struct resource pxa_resource_ffuart[] = {
310 .start = __PREG(FFUART),
311 .end = __PREG(FFUART) + 35,
312 .flags = IORESOURCE_MEM,
316 .flags = IORESOURCE_IRQ,
320 struct platform_device pxa_device_ffuart= {
321 .name = "pxa2xx-uart",
323 .resource = pxa_resource_ffuart,
324 .num_resources = ARRAY_SIZE(pxa_resource_ffuart),
327 static struct resource pxa_resource_btuart[] = {
329 .start = __PREG(BTUART),
330 .end = __PREG(BTUART) + 35,
331 .flags = IORESOURCE_MEM,
335 .flags = IORESOURCE_IRQ,
339 struct platform_device pxa_device_btuart = {
340 .name = "pxa2xx-uart",
342 .resource = pxa_resource_btuart,
343 .num_resources = ARRAY_SIZE(pxa_resource_btuart),
346 static struct resource pxa_resource_stuart[] = {
348 .start = __PREG(STUART),
349 .end = __PREG(STUART) + 35,
350 .flags = IORESOURCE_MEM,
354 .flags = IORESOURCE_IRQ,
358 struct platform_device pxa_device_stuart = {
359 .name = "pxa2xx-uart",
361 .resource = pxa_resource_stuart,
362 .num_resources = ARRAY_SIZE(pxa_resource_stuart),
365 static struct resource pxa_resource_hwuart[] = {
367 .start = __PREG(HWUART),
368 .end = __PREG(HWUART) + 47,
369 .flags = IORESOURCE_MEM,
373 .flags = IORESOURCE_IRQ,
377 struct platform_device pxa_device_hwuart = {
378 .name = "pxa2xx-uart",
380 .resource = pxa_resource_hwuart,
381 .num_resources = ARRAY_SIZE(pxa_resource_hwuart),
384 static struct resource pxai2c_resources[] = {
388 .flags = IORESOURCE_MEM,
392 .flags = IORESOURCE_IRQ,
396 struct platform_device pxa_device_i2c = {
397 .name = "pxa2xx-i2c",
399 .resource = pxai2c_resources,
400 .num_resources = ARRAY_SIZE(pxai2c_resources),
403 void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
405 pxa_device_i2c.dev.platform_data = info;
408 static struct resource pxai2s_resources[] = {
412 .flags = IORESOURCE_MEM,
416 .flags = IORESOURCE_IRQ,
420 struct platform_device pxa_device_i2s = {
421 .name = "pxa2xx-i2s",
423 .resource = pxai2s_resources,
424 .num_resources = ARRAY_SIZE(pxai2s_resources),
427 static u64 pxaficp_dmamask = ~(u32)0;
429 struct platform_device pxa_device_ficp = {
433 .dma_mask = &pxaficp_dmamask,
434 .coherent_dma_mask = 0xffffffff,
438 void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
440 pxa_device_ficp.dev.platform_data = info;
443 struct platform_device pxa_device_rtc = {
444 .name = "sa1100-rtc",