Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Russell King | eb9181a | 2005-09-29 09:49:25 +0100 | [diff] [blame] | 37 | #include <asm/arch/i2c.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | #include "generic.h" |
| 40 | |
| 41 | /* |
| 42 | * Handy function to set GPIO alternate functions |
| 43 | */ |
| 44 | |
| 45 | void pxa_gpio_mode(int gpio_mode) |
| 46 | { |
| 47 | unsigned long flags; |
| 48 | int gpio = gpio_mode & GPIO_MD_MASK_NR; |
| 49 | int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; |
| 50 | int gafr; |
| 51 | |
| 52 | local_irq_save(flags); |
| 53 | if (gpio_mode & GPIO_DFLT_LOW) |
| 54 | GPCR(gpio) = GPIO_bit(gpio); |
| 55 | else if (gpio_mode & GPIO_DFLT_HIGH) |
| 56 | GPSR(gpio) = GPIO_bit(gpio); |
| 57 | if (gpio_mode & GPIO_MD_MASK_DIR) |
| 58 | GPDR(gpio) |= GPIO_bit(gpio); |
| 59 | else |
| 60 | GPDR(gpio) &= ~GPIO_bit(gpio); |
| 61 | gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2)); |
| 62 | GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2)); |
| 63 | local_irq_restore(flags); |
| 64 | } |
| 65 | |
| 66 | EXPORT_SYMBOL(pxa_gpio_mode); |
| 67 | |
| 68 | /* |
| 69 | * Routine to safely enable or disable a clock in the CKEN |
| 70 | */ |
| 71 | void pxa_set_cken(int clock, int enable) |
| 72 | { |
| 73 | unsigned long flags; |
| 74 | local_irq_save(flags); |
| 75 | |
| 76 | if (enable) |
| 77 | CKEN |= clock; |
| 78 | else |
| 79 | CKEN &= ~clock; |
| 80 | |
| 81 | local_irq_restore(flags); |
| 82 | } |
| 83 | |
| 84 | EXPORT_SYMBOL(pxa_set_cken); |
| 85 | |
| 86 | /* |
| 87 | * Intel PXA2xx internal register mapping. |
| 88 | * |
| 89 | * Note 1: not all PXA2xx variants implement all those addresses. |
| 90 | * |
| 91 | * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table |
| 92 | * and cache flush area. |
| 93 | */ |
| 94 | static struct map_desc standard_io_desc[] __initdata = { |
| 95 | /* virtual physical length type */ |
| 96 | { 0xf2000000, 0x40000000, 0x02000000, MT_DEVICE }, /* Devs */ |
| 97 | { 0xf4000000, 0x44000000, 0x00100000, MT_DEVICE }, /* LCD */ |
| 98 | { 0xf6000000, 0x48000000, 0x00100000, MT_DEVICE }, /* Mem Ctl */ |
| 99 | { 0xf8000000, 0x4c000000, 0x00100000, MT_DEVICE }, /* USB host */ |
| 100 | { 0xfa000000, 0x50000000, 0x00100000, MT_DEVICE }, /* Camera */ |
| 101 | { 0xfe000000, 0x58000000, 0x00100000, MT_DEVICE }, /* IMem ctl */ |
| 102 | { 0xff000000, 0x00000000, 0x00100000, MT_DEVICE } /* UNCACHED_PHYS_0 */ |
| 103 | }; |
| 104 | |
| 105 | void __init pxa_map_io(void) |
| 106 | { |
| 107 | iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); |
| 108 | get_clk_frequency_khz(1); |
| 109 | } |
| 110 | |
| 111 | |
| 112 | static struct resource pxamci_resources[] = { |
| 113 | [0] = { |
| 114 | .start = 0x41100000, |
| 115 | .end = 0x41100fff, |
| 116 | .flags = IORESOURCE_MEM, |
| 117 | }, |
| 118 | [1] = { |
| 119 | .start = IRQ_MMC, |
| 120 | .end = IRQ_MMC, |
| 121 | .flags = IORESOURCE_IRQ, |
| 122 | }, |
| 123 | }; |
| 124 | |
| 125 | static u64 pxamci_dmamask = 0xffffffffUL; |
| 126 | |
| 127 | static struct platform_device pxamci_device = { |
| 128 | .name = "pxa2xx-mci", |
| 129 | .id = -1, |
| 130 | .dev = { |
| 131 | .dma_mask = &pxamci_dmamask, |
| 132 | .coherent_dma_mask = 0xffffffff, |
| 133 | }, |
| 134 | .num_resources = ARRAY_SIZE(pxamci_resources), |
| 135 | .resource = pxamci_resources, |
| 136 | }; |
| 137 | |
| 138 | void __init pxa_set_mci_info(struct pxamci_platform_data *info) |
| 139 | { |
| 140 | pxamci_device.dev.platform_data = info; |
| 141 | } |
| 142 | |
| 143 | |
| 144 | static struct pxa2xx_udc_mach_info pxa_udc_info; |
| 145 | |
| 146 | void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info) |
| 147 | { |
| 148 | memcpy(&pxa_udc_info, info, sizeof *info); |
| 149 | } |
| 150 | |
| 151 | static struct resource pxa2xx_udc_resources[] = { |
| 152 | [0] = { |
| 153 | .start = 0x40600000, |
| 154 | .end = 0x4060ffff, |
| 155 | .flags = IORESOURCE_MEM, |
| 156 | }, |
| 157 | [1] = { |
| 158 | .start = IRQ_USB, |
| 159 | .end = IRQ_USB, |
| 160 | .flags = IORESOURCE_IRQ, |
| 161 | }, |
| 162 | }; |
| 163 | |
| 164 | static u64 udc_dma_mask = ~(u32)0; |
| 165 | |
| 166 | static struct platform_device udc_device = { |
| 167 | .name = "pxa2xx-udc", |
| 168 | .id = -1, |
| 169 | .resource = pxa2xx_udc_resources, |
| 170 | .num_resources = ARRAY_SIZE(pxa2xx_udc_resources), |
| 171 | .dev = { |
| 172 | .platform_data = &pxa_udc_info, |
| 173 | .dma_mask = &udc_dma_mask, |
| 174 | } |
| 175 | }; |
| 176 | |
| 177 | static struct pxafb_mach_info pxa_fb_info; |
| 178 | |
| 179 | void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info) |
| 180 | { |
| 181 | memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info)); |
| 182 | } |
| 183 | |
| 184 | static struct resource pxafb_resources[] = { |
| 185 | [0] = { |
| 186 | .start = 0x44000000, |
| 187 | .end = 0x4400ffff, |
| 188 | .flags = IORESOURCE_MEM, |
| 189 | }, |
| 190 | [1] = { |
| 191 | .start = IRQ_LCD, |
| 192 | .end = IRQ_LCD, |
| 193 | .flags = IORESOURCE_IRQ, |
| 194 | }, |
| 195 | }; |
| 196 | |
| 197 | static u64 fb_dma_mask = ~(u64)0; |
| 198 | |
| 199 | static struct platform_device pxafb_device = { |
| 200 | .name = "pxa2xx-fb", |
| 201 | .id = -1, |
| 202 | .dev = { |
| 203 | .platform_data = &pxa_fb_info, |
| 204 | .dma_mask = &fb_dma_mask, |
| 205 | .coherent_dma_mask = 0xffffffff, |
| 206 | }, |
| 207 | .num_resources = ARRAY_SIZE(pxafb_resources), |
| 208 | .resource = pxafb_resources, |
| 209 | }; |
| 210 | |
Richard Purdie | cb38c56 | 2005-10-14 16:07:25 +0100 | [diff] [blame^] | 211 | void __init set_pxa_fb_parent(struct device *parent_dev) |
| 212 | { |
| 213 | pxafb_device.dev.parent = parent_dev; |
| 214 | } |
| 215 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | static struct platform_device ffuart_device = { |
| 217 | .name = "pxa2xx-uart", |
| 218 | .id = 0, |
| 219 | }; |
| 220 | static struct platform_device btuart_device = { |
| 221 | .name = "pxa2xx-uart", |
| 222 | .id = 1, |
| 223 | }; |
| 224 | static struct platform_device stuart_device = { |
| 225 | .name = "pxa2xx-uart", |
| 226 | .id = 2, |
| 227 | }; |
| 228 | |
Russell King | bb9bffc | 2005-04-30 13:26:06 +0100 | [diff] [blame] | 229 | static struct resource i2c_resources[] = { |
| 230 | { |
| 231 | .start = 0x40301680, |
| 232 | .end = 0x403016a3, |
| 233 | .flags = IORESOURCE_MEM, |
| 234 | }, { |
| 235 | .start = IRQ_I2C, |
| 236 | .end = IRQ_I2C, |
| 237 | .flags = IORESOURCE_IRQ, |
| 238 | }, |
| 239 | }; |
| 240 | |
| 241 | static struct platform_device i2c_device = { |
| 242 | .name = "pxa2xx-i2c", |
| 243 | .id = 0, |
| 244 | .resource = i2c_resources, |
| 245 | .num_resources = ARRAY_SIZE(i2c_resources), |
| 246 | }; |
| 247 | |
| 248 | void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info) |
| 249 | { |
| 250 | i2c_device.dev.platform_data = info; |
| 251 | } |
| 252 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | static struct platform_device *devices[] __initdata = { |
| 254 | &pxamci_device, |
| 255 | &udc_device, |
| 256 | &pxafb_device, |
| 257 | &ffuart_device, |
| 258 | &btuart_device, |
| 259 | &stuart_device, |
Russell King | bb9bffc | 2005-04-30 13:26:06 +0100 | [diff] [blame] | 260 | &i2c_device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | }; |
| 262 | |
| 263 | static int __init pxa_init(void) |
| 264 | { |
| 265 | return platform_add_devices(devices, ARRAY_SIZE(devices)); |
| 266 | } |
| 267 | |
| 268 | subsys_initcall(pxa_init); |