Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-ixp23xx/core.c |
| 3 | * |
| 4 | * Core routines for IXP23xx chips |
| 5 | * |
| 6 | * Author: Deepak Saxena <dsaxena@plexity.net> |
| 7 | * |
| 8 | * Copyright 2005 (c) MontaVista Software, Inc. |
| 9 | * |
| 10 | * Based on 2.4 code Copyright 2004 (c) Intel Corporation |
| 11 | * |
| 12 | * This file is licensed under the terms of the GNU General Public |
| 13 | * License version 2. This program is licensed "as is" without any |
| 14 | * warranty of any kind, whether express or implied. |
| 15 | */ |
| 16 | |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 17 | #include <linux/kernel.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/spinlock.h> |
| 20 | #include <linux/sched.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/serial.h> |
| 23 | #include <linux/tty.h> |
| 24 | #include <linux/bitops.h> |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 25 | #include <linux/serial_8250.h> |
| 26 | #include <linux/serial_core.h> |
| 27 | #include <linux/device.h> |
| 28 | #include <linux/mm.h> |
| 29 | #include <linux/time.h> |
| 30 | #include <linux/timex.h> |
| 31 | |
| 32 | #include <asm/types.h> |
| 33 | #include <asm/setup.h> |
| 34 | #include <asm/memory.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame^] | 35 | #include <mach/hardware.h> |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 36 | #include <asm/irq.h> |
| 37 | #include <asm/system.h> |
| 38 | #include <asm/tlbflush.h> |
| 39 | #include <asm/pgtable.h> |
| 40 | |
| 41 | #include <asm/mach/map.h> |
| 42 | #include <asm/mach/time.h> |
| 43 | #include <asm/mach/irq.h> |
| 44 | #include <asm/mach/arch.h> |
| 45 | |
| 46 | |
| 47 | /************************************************************************* |
| 48 | * Chip specific mappings shared by all IXP23xx systems |
| 49 | *************************************************************************/ |
| 50 | static struct map_desc ixp23xx_io_desc[] __initdata = { |
| 51 | { /* XSI-CPP CSRs */ |
| 52 | .virtual = IXP23XX_XSI2CPP_CSR_VIRT, |
| 53 | .pfn = __phys_to_pfn(IXP23XX_XSI2CPP_CSR_PHYS), |
| 54 | .length = IXP23XX_XSI2CPP_CSR_SIZE, |
| 55 | .type = MT_DEVICE, |
| 56 | }, { /* Expansion Bus Config */ |
| 57 | .virtual = IXP23XX_EXP_CFG_VIRT, |
| 58 | .pfn = __phys_to_pfn(IXP23XX_EXP_CFG_PHYS), |
| 59 | .length = IXP23XX_EXP_CFG_SIZE, |
| 60 | .type = MT_DEVICE, |
| 61 | }, { /* UART, Interrupt ctrl, GPIO, timers, NPEs, MACS,.... */ |
| 62 | .virtual = IXP23XX_PERIPHERAL_VIRT, |
| 63 | .pfn = __phys_to_pfn(IXP23XX_PERIPHERAL_PHYS), |
| 64 | .length = IXP23XX_PERIPHERAL_SIZE, |
| 65 | .type = MT_DEVICE, |
| 66 | }, { /* CAP CSRs */ |
| 67 | .virtual = IXP23XX_CAP_CSR_VIRT, |
| 68 | .pfn = __phys_to_pfn(IXP23XX_CAP_CSR_PHYS), |
| 69 | .length = IXP23XX_CAP_CSR_SIZE, |
| 70 | .type = MT_DEVICE, |
| 71 | }, { /* MSF CSRs */ |
| 72 | .virtual = IXP23XX_MSF_CSR_VIRT, |
| 73 | .pfn = __phys_to_pfn(IXP23XX_MSF_CSR_PHYS), |
| 74 | .length = IXP23XX_MSF_CSR_SIZE, |
| 75 | .type = MT_DEVICE, |
| 76 | }, { /* PCI I/O Space */ |
| 77 | .virtual = IXP23XX_PCI_IO_VIRT, |
| 78 | .pfn = __phys_to_pfn(IXP23XX_PCI_IO_PHYS), |
| 79 | .length = IXP23XX_PCI_IO_SIZE, |
| 80 | .type = MT_DEVICE, |
| 81 | }, { /* PCI Config Space */ |
| 82 | .virtual = IXP23XX_PCI_CFG_VIRT, |
| 83 | .pfn = __phys_to_pfn(IXP23XX_PCI_CFG_PHYS), |
| 84 | .length = IXP23XX_PCI_CFG_SIZE, |
| 85 | .type = MT_DEVICE, |
| 86 | }, { /* PCI local CFG CSRs */ |
| 87 | .virtual = IXP23XX_PCI_CREG_VIRT, |
| 88 | .pfn = __phys_to_pfn(IXP23XX_PCI_CREG_PHYS), |
| 89 | .length = IXP23XX_PCI_CREG_SIZE, |
| 90 | .type = MT_DEVICE, |
| 91 | }, { /* PCI MEM Space */ |
| 92 | .virtual = IXP23XX_PCI_MEM_VIRT, |
| 93 | .pfn = __phys_to_pfn(IXP23XX_PCI_MEM_PHYS), |
| 94 | .length = IXP23XX_PCI_MEM_SIZE, |
| 95 | .type = MT_DEVICE, |
| 96 | } |
| 97 | }; |
| 98 | |
| 99 | void __init ixp23xx_map_io(void) |
| 100 | { |
| 101 | iotable_init(ixp23xx_io_desc, ARRAY_SIZE(ixp23xx_io_desc)); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | /*************************************************************************** |
| 106 | * IXP23xx Interrupt Handling |
| 107 | ***************************************************************************/ |
| 108 | enum ixp23xx_irq_type { |
| 109 | IXP23XX_IRQ_LEVEL, IXP23XX_IRQ_EDGE |
| 110 | }; |
| 111 | |
| 112 | static void ixp23xx_config_irq(unsigned int, enum ixp23xx_irq_type); |
| 113 | |
| 114 | static int ixp23xx_irq_set_type(unsigned int irq, unsigned int type) |
| 115 | { |
| 116 | int line = irq - IRQ_IXP23XX_GPIO6 + 6; |
| 117 | u32 int_style; |
| 118 | enum ixp23xx_irq_type irq_type; |
| 119 | volatile u32 *int_reg; |
| 120 | |
| 121 | /* |
| 122 | * Only GPIOs 6-15 are wired to interrupts on IXP23xx |
| 123 | */ |
| 124 | if (line < 6 || line > 15) |
| 125 | return -EINVAL; |
| 126 | |
| 127 | switch (type) { |
Dmitry Baryshkov | 6cab486 | 2008-07-27 04:23:31 +0100 | [diff] [blame] | 128 | case IRQ_TYPE_EDGE_BOTH: |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 129 | int_style = IXP23XX_GPIO_STYLE_TRANSITIONAL; |
| 130 | irq_type = IXP23XX_IRQ_EDGE; |
| 131 | break; |
Dmitry Baryshkov | 6cab486 | 2008-07-27 04:23:31 +0100 | [diff] [blame] | 132 | case IRQ_TYPE_EDGE_RISING: |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 133 | int_style = IXP23XX_GPIO_STYLE_RISING_EDGE; |
| 134 | irq_type = IXP23XX_IRQ_EDGE; |
| 135 | break; |
Dmitry Baryshkov | 6cab486 | 2008-07-27 04:23:31 +0100 | [diff] [blame] | 136 | case IRQ_TYPE_EDGE_FALLING: |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 137 | int_style = IXP23XX_GPIO_STYLE_FALLING_EDGE; |
| 138 | irq_type = IXP23XX_IRQ_EDGE; |
| 139 | break; |
Dmitry Baryshkov | 6cab486 | 2008-07-27 04:23:31 +0100 | [diff] [blame] | 140 | case IRQ_TYPE_LEVEL_HIGH: |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 141 | int_style = IXP23XX_GPIO_STYLE_ACTIVE_HIGH; |
| 142 | irq_type = IXP23XX_IRQ_LEVEL; |
| 143 | break; |
Dmitry Baryshkov | 6cab486 | 2008-07-27 04:23:31 +0100 | [diff] [blame] | 144 | case IRQ_TYPE_LEVEL_LOW: |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 145 | int_style = IXP23XX_GPIO_STYLE_ACTIVE_LOW; |
| 146 | irq_type = IXP23XX_IRQ_LEVEL; |
| 147 | break; |
| 148 | default: |
| 149 | return -EINVAL; |
| 150 | } |
| 151 | |
| 152 | ixp23xx_config_irq(irq, irq_type); |
| 153 | |
| 154 | if (line >= 8) { /* pins 8-15 */ |
| 155 | line -= 8; |
| 156 | int_reg = (volatile u32 *)IXP23XX_GPIO_GPIT2R; |
| 157 | } else { /* pins 0-7 */ |
| 158 | int_reg = (volatile u32 *)IXP23XX_GPIO_GPIT1R; |
| 159 | } |
| 160 | |
| 161 | /* |
| 162 | * Clear pending interrupts |
| 163 | */ |
| 164 | *IXP23XX_GPIO_GPISR = (1 << line); |
| 165 | |
| 166 | /* Clear the style for the appropriate pin */ |
| 167 | *int_reg &= ~(IXP23XX_GPIO_STYLE_MASK << |
| 168 | (line * IXP23XX_GPIO_STYLE_SIZE)); |
| 169 | |
| 170 | /* Set the new style */ |
| 171 | *int_reg |= (int_style << (line * IXP23XX_GPIO_STYLE_SIZE)); |
| 172 | |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | static void ixp23xx_irq_mask(unsigned int irq) |
| 177 | { |
Lennert Buytenhek | ec8510f | 2006-06-02 19:51:51 +0100 | [diff] [blame] | 178 | volatile unsigned long *intr_reg; |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 179 | |
Lennert Buytenhek | ec8510f | 2006-06-02 19:51:51 +0100 | [diff] [blame] | 180 | if (irq >= 56) |
| 181 | irq += 8; |
| 182 | |
| 183 | intr_reg = IXP23XX_INTR_EN1 + (irq / 32); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 184 | *intr_reg &= ~(1 << (irq % 32)); |
| 185 | } |
| 186 | |
| 187 | static void ixp23xx_irq_ack(unsigned int irq) |
| 188 | { |
| 189 | int line = irq - IRQ_IXP23XX_GPIO6 + 6; |
| 190 | |
| 191 | if ((line < 6) || (line > 15)) |
| 192 | return; |
| 193 | |
| 194 | *IXP23XX_GPIO_GPISR = (1 << line); |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | * Level triggered interrupts on GPIO lines can only be cleared when the |
| 199 | * interrupt condition disappears. |
| 200 | */ |
| 201 | static void ixp23xx_irq_level_unmask(unsigned int irq) |
| 202 | { |
Lennert Buytenhek | ec8510f | 2006-06-02 19:51:51 +0100 | [diff] [blame] | 203 | volatile unsigned long *intr_reg; |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 204 | |
| 205 | ixp23xx_irq_ack(irq); |
| 206 | |
Lennert Buytenhek | ec8510f | 2006-06-02 19:51:51 +0100 | [diff] [blame] | 207 | if (irq >= 56) |
| 208 | irq += 8; |
| 209 | |
| 210 | intr_reg = IXP23XX_INTR_EN1 + (irq / 32); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 211 | *intr_reg |= (1 << (irq % 32)); |
| 212 | } |
| 213 | |
| 214 | static void ixp23xx_irq_edge_unmask(unsigned int irq) |
| 215 | { |
Lennert Buytenhek | ec8510f | 2006-06-02 19:51:51 +0100 | [diff] [blame] | 216 | volatile unsigned long *intr_reg; |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 217 | |
Lennert Buytenhek | ec8510f | 2006-06-02 19:51:51 +0100 | [diff] [blame] | 218 | if (irq >= 56) |
| 219 | irq += 8; |
| 220 | |
| 221 | intr_reg = IXP23XX_INTR_EN1 + (irq / 32); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 222 | *intr_reg |= (1 << (irq % 32)); |
| 223 | } |
| 224 | |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 225 | static struct irq_chip ixp23xx_irq_level_chip = { |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 226 | .ack = ixp23xx_irq_mask, |
| 227 | .mask = ixp23xx_irq_mask, |
| 228 | .unmask = ixp23xx_irq_level_unmask, |
| 229 | .set_type = ixp23xx_irq_set_type |
| 230 | }; |
| 231 | |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 232 | static struct irq_chip ixp23xx_irq_edge_chip = { |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 233 | .ack = ixp23xx_irq_ack, |
| 234 | .mask = ixp23xx_irq_mask, |
| 235 | .unmask = ixp23xx_irq_edge_unmask, |
| 236 | .set_type = ixp23xx_irq_set_type |
| 237 | }; |
| 238 | |
| 239 | static void ixp23xx_pci_irq_mask(unsigned int irq) |
| 240 | { |
| 241 | *IXP23XX_PCI_XSCALE_INT_ENABLE &= ~(1 << (IRQ_IXP23XX_INTA + 27 - irq)); |
| 242 | } |
| 243 | |
| 244 | static void ixp23xx_pci_irq_unmask(unsigned int irq) |
| 245 | { |
| 246 | *IXP23XX_PCI_XSCALE_INT_ENABLE |= (1 << (IRQ_IXP23XX_INTA + 27 - irq)); |
| 247 | } |
| 248 | |
| 249 | /* |
| 250 | * TODO: Should this just be done at ASM level? |
| 251 | */ |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 252 | static void pci_handler(unsigned int irq, struct irq_desc *desc) |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 253 | { |
| 254 | u32 pci_interrupt; |
| 255 | unsigned int irqno; |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 256 | struct irq_desc *int_desc; |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 257 | |
| 258 | pci_interrupt = *IXP23XX_PCI_XSCALE_INT_STATUS; |
| 259 | |
| 260 | desc->chip->ack(irq); |
| 261 | |
| 262 | /* See which PCI_INTA, or PCI_INTB interrupted */ |
| 263 | if (pci_interrupt & (1 << 26)) { |
| 264 | irqno = IRQ_IXP23XX_INTB; |
| 265 | } else if (pci_interrupt & (1 << 27)) { |
| 266 | irqno = IRQ_IXP23XX_INTA; |
| 267 | } else { |
| 268 | BUG(); |
| 269 | } |
| 270 | |
| 271 | int_desc = irq_desc + irqno; |
Linus Torvalds | 0cd61b6 | 2006-10-06 10:53:39 -0700 | [diff] [blame] | 272 | desc_handle_irq(irqno, int_desc); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 273 | |
| 274 | desc->chip->unmask(irq); |
| 275 | } |
| 276 | |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 277 | static struct irq_chip ixp23xx_pci_irq_chip = { |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 278 | .ack = ixp23xx_pci_irq_mask, |
| 279 | .mask = ixp23xx_pci_irq_mask, |
| 280 | .unmask = ixp23xx_pci_irq_unmask |
| 281 | }; |
| 282 | |
| 283 | static void ixp23xx_config_irq(unsigned int irq, enum ixp23xx_irq_type type) |
| 284 | { |
| 285 | switch (type) { |
| 286 | case IXP23XX_IRQ_LEVEL: |
| 287 | set_irq_chip(irq, &ixp23xx_irq_level_chip); |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 288 | set_irq_handler(irq, handle_level_irq); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 289 | break; |
| 290 | case IXP23XX_IRQ_EDGE: |
| 291 | set_irq_chip(irq, &ixp23xx_irq_edge_chip); |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 292 | set_irq_handler(irq, handle_edge_irq); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 293 | break; |
| 294 | } |
| 295 | set_irq_flags(irq, IRQF_VALID); |
| 296 | } |
| 297 | |
| 298 | void __init ixp23xx_init_irq(void) |
| 299 | { |
| 300 | int irq; |
| 301 | |
| 302 | /* Route everything to IRQ */ |
| 303 | *IXP23XX_INTR_SEL1 = 0x0; |
| 304 | *IXP23XX_INTR_SEL2 = 0x0; |
| 305 | *IXP23XX_INTR_SEL3 = 0x0; |
| 306 | *IXP23XX_INTR_SEL4 = 0x0; |
| 307 | |
| 308 | /* Mask all sources */ |
| 309 | *IXP23XX_INTR_EN1 = 0x0; |
| 310 | *IXP23XX_INTR_EN2 = 0x0; |
| 311 | *IXP23XX_INTR_EN3 = 0x0; |
| 312 | *IXP23XX_INTR_EN4 = 0x0; |
| 313 | |
| 314 | /* |
| 315 | * Configure all IRQs for level-sensitive operation |
| 316 | */ |
| 317 | for (irq = 0; irq <= NUM_IXP23XX_RAW_IRQS; irq++) { |
| 318 | ixp23xx_config_irq(irq, IXP23XX_IRQ_LEVEL); |
| 319 | } |
| 320 | |
| 321 | for (irq = IRQ_IXP23XX_INTA; irq <= IRQ_IXP23XX_INTB; irq++) { |
| 322 | set_irq_chip(irq, &ixp23xx_pci_irq_chip); |
Russell King | 10dd5ce | 2006-11-23 11:41:32 +0000 | [diff] [blame] | 323 | set_irq_handler(irq, handle_level_irq); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 324 | set_irq_flags(irq, IRQF_VALID); |
| 325 | } |
| 326 | |
| 327 | set_irq_chained_handler(IRQ_IXP23XX_PCI_INT_RPH, pci_handler); |
| 328 | } |
| 329 | |
| 330 | |
| 331 | /************************************************************************* |
| 332 | * Timer-tick functions for IXP23xx |
| 333 | *************************************************************************/ |
Lennert Buytenhek | f869afa | 2006-06-22 10:30:53 +0100 | [diff] [blame] | 334 | #define CLOCK_TICKS_PER_USEC (CLOCK_TICK_RATE / USEC_PER_SEC) |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 335 | |
| 336 | static unsigned long next_jiffy_time; |
| 337 | |
| 338 | static unsigned long |
| 339 | ixp23xx_gettimeoffset(void) |
| 340 | { |
| 341 | unsigned long elapsed; |
| 342 | |
| 343 | elapsed = *IXP23XX_TIMER_CONT - (next_jiffy_time - LATCH); |
| 344 | |
| 345 | return elapsed / CLOCK_TICKS_PER_USEC; |
| 346 | } |
| 347 | |
| 348 | static irqreturn_t |
Linus Torvalds | 0cd61b6 | 2006-10-06 10:53:39 -0700 | [diff] [blame] | 349 | ixp23xx_timer_interrupt(int irq, void *dev_id) |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 350 | { |
| 351 | /* Clear Pending Interrupt by writing '1' to it */ |
| 352 | *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND; |
Lennert Buytenhek | f869afa | 2006-06-22 10:30:53 +0100 | [diff] [blame] | 353 | while ((signed long)(*IXP23XX_TIMER_CONT - next_jiffy_time) >= LATCH) { |
Linus Torvalds | 0cd61b6 | 2006-10-06 10:53:39 -0700 | [diff] [blame] | 354 | timer_tick(); |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 355 | next_jiffy_time += LATCH; |
| 356 | } |
| 357 | |
| 358 | return IRQ_HANDLED; |
| 359 | } |
| 360 | |
| 361 | static struct irqaction ixp23xx_timer_irq = { |
| 362 | .name = "IXP23xx Timer Tick", |
| 363 | .handler = ixp23xx_timer_interrupt, |
Bernhard Walle | b30faba | 2007-05-08 00:35:39 -0700 | [diff] [blame] | 364 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 365 | }; |
| 366 | |
| 367 | void __init ixp23xx_init_timer(void) |
| 368 | { |
| 369 | /* Clear Pending Interrupt by writing '1' to it */ |
| 370 | *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND; |
| 371 | |
| 372 | /* Setup the Timer counter value */ |
| 373 | *IXP23XX_TIMER1_RELOAD = |
| 374 | (LATCH & ~IXP23XX_TIMER_RELOAD_MASK) | IXP23XX_TIMER_ENABLE; |
| 375 | |
| 376 | *IXP23XX_TIMER_CONT = 0; |
| 377 | next_jiffy_time = LATCH; |
| 378 | |
| 379 | /* Connect the interrupt handler and enable the interrupt */ |
| 380 | setup_irq(IRQ_IXP23XX_TIMER1, &ixp23xx_timer_irq); |
| 381 | } |
| 382 | |
| 383 | struct sys_timer ixp23xx_timer = { |
| 384 | .init = ixp23xx_init_timer, |
| 385 | .offset = ixp23xx_gettimeoffset, |
| 386 | }; |
| 387 | |
| 388 | |
| 389 | /************************************************************************* |
Simon Arlott | 6cbdc8c | 2007-05-11 20:40:30 +0100 | [diff] [blame] | 390 | * IXP23xx Platform Initialization |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 391 | *************************************************************************/ |
| 392 | static struct resource ixp23xx_uart_resources[] = { |
| 393 | { |
| 394 | .start = IXP23XX_UART1_PHYS, |
| 395 | .end = IXP23XX_UART1_PHYS + 0x0fff, |
| 396 | .flags = IORESOURCE_MEM |
| 397 | }, { |
| 398 | .start = IXP23XX_UART2_PHYS, |
| 399 | .end = IXP23XX_UART2_PHYS + 0x0fff, |
| 400 | .flags = IORESOURCE_MEM |
| 401 | } |
| 402 | }; |
| 403 | |
| 404 | static struct plat_serial8250_port ixp23xx_uart_data[] = { |
| 405 | { |
| 406 | .mapbase = IXP23XX_UART1_PHYS, |
| 407 | .membase = (char *)(IXP23XX_UART1_VIRT + 3), |
| 408 | .irq = IRQ_IXP23XX_UART1, |
| 409 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, |
| 410 | .iotype = UPIO_MEM, |
| 411 | .regshift = 2, |
| 412 | .uartclk = IXP23XX_UART_XTAL, |
| 413 | }, { |
| 414 | .mapbase = IXP23XX_UART2_PHYS, |
| 415 | .membase = (char *)(IXP23XX_UART2_VIRT + 3), |
| 416 | .irq = IRQ_IXP23XX_UART2, |
| 417 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, |
| 418 | .iotype = UPIO_MEM, |
| 419 | .regshift = 2, |
| 420 | .uartclk = IXP23XX_UART_XTAL, |
| 421 | }, |
| 422 | { }, |
| 423 | }; |
| 424 | |
| 425 | static struct platform_device ixp23xx_uart = { |
| 426 | .name = "serial8250", |
| 427 | .id = 0, |
| 428 | .dev.platform_data = ixp23xx_uart_data, |
| 429 | .num_resources = 2, |
| 430 | .resource = ixp23xx_uart_resources, |
| 431 | }; |
| 432 | |
| 433 | static struct platform_device *ixp23xx_devices[] __initdata = { |
| 434 | &ixp23xx_uart, |
| 435 | }; |
| 436 | |
| 437 | void __init ixp23xx_sys_init(void) |
| 438 | { |
Lennert Buytenhek | 8b76a68 | 2006-06-22 10:30:56 +0100 | [diff] [blame] | 439 | *IXP23XX_EXP_UNIT_FUSE |= 0xf; |
Lennert Buytenhek | c471307 | 2006-03-28 21:18:54 +0100 | [diff] [blame] | 440 | platform_add_devices(ixp23xx_devices, ARRAY_SIZE(ixp23xx_devices)); |
| 441 | } |