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/device.h> 24 #include <linux/ioport.h> 25 #include <linux/pm.h> 26 27 #include <asm/hardware.h> 28 #include <asm/irq.h> 29 #include <asm/system.h> 30 #include <asm/pgtable.h> 31 #include <asm/mach/map.h> 32 33 #include <asm/arch/pxa-regs.h> 34 #include <asm/arch/udc.h> 35 #include <asm/arch/pxafb.h> 36 #include <asm/arch/mmc.h> 37 38 #include "generic.h" 39 40 /* 41 * Handy function to set GPIO alternate functions 42 */ 43 44 void pxa_gpio_mode(int gpio_mode) 45 { 46 unsigned long flags; 47 int gpio = gpio_mode & GPIO_MD_MASK_NR; 48 int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; 49 int gafr; 50 51 local_irq_save(flags); 52 if (gpio_mode & GPIO_DFLT_LOW) 53 GPCR(gpio) = GPIO_bit(gpio); 54 else if (gpio_mode & GPIO_DFLT_HIGH) 55 GPSR(gpio) = GPIO_bit(gpio); 56 if (gpio_mode & GPIO_MD_MASK_DIR) 57 GPDR(gpio) |= GPIO_bit(gpio); 58 else 59 GPDR(gpio) &= ~GPIO_bit(gpio); 60 gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2)); 61 GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2)); 62 local_irq_restore(flags); 63 } 64 65 EXPORT_SYMBOL(pxa_gpio_mode); 66 67 /* 68 * Routine to safely enable or disable a clock in the CKEN 69 */ 70 void pxa_set_cken(int clock, int enable) 71 { 72 unsigned long flags; 73 local_irq_save(flags); 74 75 if (enable) 76 CKEN |= clock; 77 else 78 CKEN &= ~clock; 79 80 local_irq_restore(flags); 81 } 82 83 EXPORT_SYMBOL(pxa_set_cken); 84 85 /* 86 * Intel PXA2xx internal register mapping. 87 * 88 * Note 1: not all PXA2xx variants implement all those addresses. 89 * 90 * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table 91 * and cache flush area. 92 */ 93 static struct map_desc standard_io_desc[] __initdata = { 94 /* virtual physical length type */ 95 { 0xf2000000, 0x40000000, 0x02000000, MT_DEVICE }, /* Devs */ 96 { 0xf4000000, 0x44000000, 0x00100000, MT_DEVICE }, /* LCD */ 97 { 0xf6000000, 0x48000000, 0x00100000, MT_DEVICE }, /* Mem Ctl */ 98 { 0xf8000000, 0x4c000000, 0x00100000, MT_DEVICE }, /* USB host */ 99 { 0xfa000000, 0x50000000, 0x00100000, MT_DEVICE }, /* Camera */ 100 { 0xfe000000, 0x58000000, 0x00100000, MT_DEVICE }, /* IMem ctl */ 101 { 0xff000000, 0x00000000, 0x00100000, MT_DEVICE } /* UNCACHED_PHYS_0 */ 102 }; 103 104 void __init pxa_map_io(void) 105 { 106 iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); 107 get_clk_frequency_khz(1); 108 } 109 110 111 static struct resource pxamci_resources[] = { 112 [0] = { 113 .start = 0x41100000, 114 .end = 0x41100fff, 115 .flags = IORESOURCE_MEM, 116 }, 117 [1] = { 118 .start = IRQ_MMC, 119 .end = IRQ_MMC, 120 .flags = IORESOURCE_IRQ, 121 }, 122 }; 123 124 static u64 pxamci_dmamask = 0xffffffffUL; 125 126 static struct platform_device pxamci_device = { 127 .name = "pxa2xx-mci", 128 .id = -1, 129 .dev = { 130 .dma_mask = &pxamci_dmamask, 131 .coherent_dma_mask = 0xffffffff, 132 }, 133 .num_resources = ARRAY_SIZE(pxamci_resources), 134 .resource = pxamci_resources, 135 }; 136 137 void __init pxa_set_mci_info(struct pxamci_platform_data *info) 138 { 139 pxamci_device.dev.platform_data = info; 140 } 141 142 143 static struct pxa2xx_udc_mach_info pxa_udc_info; 144 145 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info) 146 { 147 memcpy(&pxa_udc_info, info, sizeof *info); 148 } 149 150 static struct resource pxa2xx_udc_resources[] = { 151 [0] = { 152 .start = 0x40600000, 153 .end = 0x4060ffff, 154 .flags = IORESOURCE_MEM, 155 }, 156 [1] = { 157 .start = IRQ_USB, 158 .end = IRQ_USB, 159 .flags = IORESOURCE_IRQ, 160 }, 161 }; 162 163 static u64 udc_dma_mask = ~(u32)0; 164 165 static struct platform_device udc_device = { 166 .name = "pxa2xx-udc", 167 .id = -1, 168 .resource = pxa2xx_udc_resources, 169 .num_resources = ARRAY_SIZE(pxa2xx_udc_resources), 170 .dev = { 171 .platform_data = &pxa_udc_info, 172 .dma_mask = &udc_dma_mask, 173 } 174 }; 175 176 static struct pxafb_mach_info pxa_fb_info; 177 178 void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info) 179 { 180 memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info)); 181 } 182 183 static struct resource pxafb_resources[] = { 184 [0] = { 185 .start = 0x44000000, 186 .end = 0x4400ffff, 187 .flags = IORESOURCE_MEM, 188 }, 189 [1] = { 190 .start = IRQ_LCD, 191 .end = IRQ_LCD, 192 .flags = IORESOURCE_IRQ, 193 }, 194 }; 195 196 static u64 fb_dma_mask = ~(u64)0; 197 198 static struct platform_device pxafb_device = { 199 .name = "pxa2xx-fb", 200 .id = -1, 201 .dev = { 202 .platform_data = &pxa_fb_info, 203 .dma_mask = &fb_dma_mask, 204 .coherent_dma_mask = 0xffffffff, 205 }, 206 .num_resources = ARRAY_SIZE(pxafb_resources), 207 .resource = pxafb_resources, 208 }; 209 210 static struct platform_device ffuart_device = { 211 .name = "pxa2xx-uart", 212 .id = 0, 213 }; 214 static struct platform_device btuart_device = { 215 .name = "pxa2xx-uart", 216 .id = 1, 217 }; 218 static struct platform_device stuart_device = { 219 .name = "pxa2xx-uart", 220 .id = 2, 221 }; 222 223 static struct resource i2c_resources[] = { 224 { 225 .start = 0x40301680, 226 .end = 0x403016a3, 227 .flags = IORESOURCE_MEM, 228 }, { 229 .start = IRQ_I2C, 230 .end = IRQ_I2C, 231 .flags = IORESOURCE_IRQ, 232 }, 233 }; 234 235 static struct platform_device i2c_device = { 236 .name = "pxa2xx-i2c", 237 .id = 0, 238 .resource = i2c_resources, 239 .num_resources = ARRAY_SIZE(i2c_resources), 240 }; 241 242 void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info) 243 { 244 i2c_device.dev.platform_data = info; 245 } 246 247 static struct platform_device *devices[] __initdata = { 248 &pxamci_device, 249 &udc_device, 250 &pxafb_device, 251 &ffuart_device, 252 &btuart_device, 253 &stuart_device, 254 &i2c_device, 255 }; 256 257 static int __init pxa_init(void) 258 { 259 return platform_add_devices(devices, ARRAY_SIZE(devices)); 260 } 261 262 subsys_initcall(pxa_init); 263