Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-lpc32xx/irq.c |
| 3 | * |
| 4 | * Author: Kevin Wells <kevin.wells@nxp.com> |
| 5 | * |
| 6 | * Copyright (C) 2010 NXP Semiconductors |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/irq.h> |
| 23 | #include <linux/err.h> |
| 24 | #include <linux/io.h> |
| 25 | |
| 26 | #include <mach/irqs.h> |
| 27 | #include <mach/hardware.h> |
| 28 | #include <mach/platform.h> |
| 29 | #include "common.h" |
| 30 | |
| 31 | /* |
| 32 | * Default value representing the Activation polarity of all internal |
| 33 | * interrupt sources |
| 34 | */ |
| 35 | #define MIC_APR_DEFAULT 0x3FF0EFE0 |
| 36 | #define SIC1_APR_DEFAULT 0xFBD27186 |
| 37 | #define SIC2_APR_DEFAULT 0x801810C0 |
| 38 | |
| 39 | /* |
| 40 | * Default value representing the Activation Type of all internal |
| 41 | * interrupt sources. All are level sensitive. |
| 42 | */ |
| 43 | #define MIC_ATR_DEFAULT 0x00000000 |
| 44 | #define SIC1_ATR_DEFAULT 0x00026000 |
| 45 | #define SIC2_ATR_DEFAULT 0x00000000 |
| 46 | |
| 47 | struct lpc32xx_event_group_regs { |
| 48 | void __iomem *enab_reg; |
| 49 | void __iomem *edge_reg; |
| 50 | void __iomem *maskstat_reg; |
| 51 | void __iomem *rawstat_reg; |
| 52 | }; |
| 53 | |
| 54 | static const struct lpc32xx_event_group_regs lpc32xx_event_int_regs = { |
| 55 | .enab_reg = LPC32XX_CLKPWR_INT_ER, |
| 56 | .edge_reg = LPC32XX_CLKPWR_INT_AP, |
| 57 | .maskstat_reg = LPC32XX_CLKPWR_INT_SR, |
| 58 | .rawstat_reg = LPC32XX_CLKPWR_INT_RS, |
| 59 | }; |
| 60 | |
| 61 | static const struct lpc32xx_event_group_regs lpc32xx_event_pin_regs = { |
| 62 | .enab_reg = LPC32XX_CLKPWR_PIN_ER, |
| 63 | .edge_reg = LPC32XX_CLKPWR_PIN_AP, |
| 64 | .maskstat_reg = LPC32XX_CLKPWR_PIN_SR, |
| 65 | .rawstat_reg = LPC32XX_CLKPWR_PIN_RS, |
| 66 | }; |
| 67 | |
| 68 | struct lpc32xx_event_info { |
| 69 | const struct lpc32xx_event_group_regs *event_group; |
| 70 | u32 mask; |
| 71 | }; |
| 72 | |
| 73 | /* |
| 74 | * Maps an IRQ number to and event mask and register |
| 75 | */ |
| 76 | static const struct lpc32xx_event_info lpc32xx_events[NR_IRQS] = { |
| 77 | [IRQ_LPC32XX_GPI_08] = { |
| 78 | .event_group = &lpc32xx_event_pin_regs, |
| 79 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_08_BIT, |
| 80 | }, |
| 81 | [IRQ_LPC32XX_GPI_09] = { |
| 82 | .event_group = &lpc32xx_event_pin_regs, |
| 83 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_09_BIT, |
| 84 | }, |
| 85 | [IRQ_LPC32XX_GPI_19] = { |
| 86 | .event_group = &lpc32xx_event_pin_regs, |
| 87 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_19_BIT, |
| 88 | }, |
| 89 | [IRQ_LPC32XX_GPI_07] = { |
| 90 | .event_group = &lpc32xx_event_pin_regs, |
| 91 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_07_BIT, |
| 92 | }, |
| 93 | [IRQ_LPC32XX_GPI_00] = { |
| 94 | .event_group = &lpc32xx_event_pin_regs, |
| 95 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_00_BIT, |
| 96 | }, |
| 97 | [IRQ_LPC32XX_GPI_01] = { |
| 98 | .event_group = &lpc32xx_event_pin_regs, |
| 99 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_01_BIT, |
| 100 | }, |
| 101 | [IRQ_LPC32XX_GPI_02] = { |
| 102 | .event_group = &lpc32xx_event_pin_regs, |
| 103 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_02_BIT, |
| 104 | }, |
| 105 | [IRQ_LPC32XX_GPI_03] = { |
| 106 | .event_group = &lpc32xx_event_pin_regs, |
| 107 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_03_BIT, |
| 108 | }, |
| 109 | [IRQ_LPC32XX_GPI_04] = { |
| 110 | .event_group = &lpc32xx_event_pin_regs, |
| 111 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_04_BIT, |
| 112 | }, |
| 113 | [IRQ_LPC32XX_GPI_05] = { |
| 114 | .event_group = &lpc32xx_event_pin_regs, |
| 115 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_05_BIT, |
| 116 | }, |
| 117 | [IRQ_LPC32XX_GPI_06] = { |
| 118 | .event_group = &lpc32xx_event_pin_regs, |
| 119 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_06_BIT, |
| 120 | }, |
Roland Stigge | f673705 | 2012-02-27 17:28:02 +0100 | [diff] [blame] | 121 | [IRQ_LPC32XX_GPI_28] = { |
| 122 | .event_group = &lpc32xx_event_pin_regs, |
| 123 | .mask = LPC32XX_CLKPWR_EXTSRC_GPI_28_BIT, |
| 124 | }, |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 125 | [IRQ_LPC32XX_GPIO_00] = { |
| 126 | .event_group = &lpc32xx_event_int_regs, |
| 127 | .mask = LPC32XX_CLKPWR_INTSRC_GPIO_00_BIT, |
| 128 | }, |
| 129 | [IRQ_LPC32XX_GPIO_01] = { |
| 130 | .event_group = &lpc32xx_event_int_regs, |
| 131 | .mask = LPC32XX_CLKPWR_INTSRC_GPIO_01_BIT, |
| 132 | }, |
| 133 | [IRQ_LPC32XX_GPIO_02] = { |
| 134 | .event_group = &lpc32xx_event_int_regs, |
| 135 | .mask = LPC32XX_CLKPWR_INTSRC_GPIO_02_BIT, |
| 136 | }, |
| 137 | [IRQ_LPC32XX_GPIO_03] = { |
| 138 | .event_group = &lpc32xx_event_int_regs, |
| 139 | .mask = LPC32XX_CLKPWR_INTSRC_GPIO_03_BIT, |
| 140 | }, |
| 141 | [IRQ_LPC32XX_GPIO_04] = { |
| 142 | .event_group = &lpc32xx_event_int_regs, |
| 143 | .mask = LPC32XX_CLKPWR_INTSRC_GPIO_04_BIT, |
| 144 | }, |
| 145 | [IRQ_LPC32XX_GPIO_05] = { |
| 146 | .event_group = &lpc32xx_event_int_regs, |
| 147 | .mask = LPC32XX_CLKPWR_INTSRC_GPIO_05_BIT, |
| 148 | }, |
| 149 | [IRQ_LPC32XX_KEY] = { |
| 150 | .event_group = &lpc32xx_event_int_regs, |
| 151 | .mask = LPC32XX_CLKPWR_INTSRC_KEY_BIT, |
| 152 | }, |
| 153 | [IRQ_LPC32XX_USB_OTG_ATX] = { |
| 154 | .event_group = &lpc32xx_event_int_regs, |
| 155 | .mask = LPC32XX_CLKPWR_INTSRC_USBATXINT_BIT, |
| 156 | }, |
| 157 | [IRQ_LPC32XX_USB_HOST] = { |
| 158 | .event_group = &lpc32xx_event_int_regs, |
| 159 | .mask = LPC32XX_CLKPWR_INTSRC_USB_BIT, |
| 160 | }, |
| 161 | [IRQ_LPC32XX_RTC] = { |
| 162 | .event_group = &lpc32xx_event_int_regs, |
| 163 | .mask = LPC32XX_CLKPWR_INTSRC_RTC_BIT, |
| 164 | }, |
| 165 | [IRQ_LPC32XX_MSTIMER] = { |
| 166 | .event_group = &lpc32xx_event_int_regs, |
| 167 | .mask = LPC32XX_CLKPWR_INTSRC_MSTIMER_BIT, |
| 168 | }, |
| 169 | [IRQ_LPC32XX_TS_AUX] = { |
| 170 | .event_group = &lpc32xx_event_int_regs, |
| 171 | .mask = LPC32XX_CLKPWR_INTSRC_TS_AUX_BIT, |
| 172 | }, |
| 173 | [IRQ_LPC32XX_TS_P] = { |
| 174 | .event_group = &lpc32xx_event_int_regs, |
| 175 | .mask = LPC32XX_CLKPWR_INTSRC_TS_P_BIT, |
| 176 | }, |
| 177 | [IRQ_LPC32XX_TS_IRQ] = { |
| 178 | .event_group = &lpc32xx_event_int_regs, |
| 179 | .mask = LPC32XX_CLKPWR_INTSRC_ADC_BIT, |
| 180 | }, |
| 181 | }; |
| 182 | |
| 183 | static void get_controller(unsigned int irq, unsigned int *base, |
| 184 | unsigned int *irqbit) |
| 185 | { |
| 186 | if (irq < 32) { |
| 187 | *base = LPC32XX_MIC_BASE; |
| 188 | *irqbit = 1 << irq; |
| 189 | } else if (irq < 64) { |
| 190 | *base = LPC32XX_SIC1_BASE; |
| 191 | *irqbit = 1 << (irq - 32); |
| 192 | } else { |
| 193 | *base = LPC32XX_SIC2_BASE; |
| 194 | *irqbit = 1 << (irq - 64); |
| 195 | } |
| 196 | } |
| 197 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 198 | static void lpc32xx_mask_irq(struct irq_data *d) |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 199 | { |
| 200 | unsigned int reg, ctrl, mask; |
| 201 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 202 | get_controller(d->irq, &ctrl, &mask); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 203 | |
| 204 | reg = __raw_readl(LPC32XX_INTC_MASK(ctrl)) & ~mask; |
| 205 | __raw_writel(reg, LPC32XX_INTC_MASK(ctrl)); |
| 206 | } |
| 207 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 208 | static void lpc32xx_unmask_irq(struct irq_data *d) |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 209 | { |
| 210 | unsigned int reg, ctrl, mask; |
| 211 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 212 | get_controller(d->irq, &ctrl, &mask); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 213 | |
| 214 | reg = __raw_readl(LPC32XX_INTC_MASK(ctrl)) | mask; |
| 215 | __raw_writel(reg, LPC32XX_INTC_MASK(ctrl)); |
| 216 | } |
| 217 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 218 | static void lpc32xx_ack_irq(struct irq_data *d) |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 219 | { |
| 220 | unsigned int ctrl, mask; |
| 221 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 222 | get_controller(d->irq, &ctrl, &mask); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 223 | |
| 224 | __raw_writel(mask, LPC32XX_INTC_RAW_STAT(ctrl)); |
| 225 | |
| 226 | /* Also need to clear pending wake event */ |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 227 | if (lpc32xx_events[d->irq].mask != 0) |
| 228 | __raw_writel(lpc32xx_events[d->irq].mask, |
| 229 | lpc32xx_events[d->irq].event_group->rawstat_reg); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | static void __lpc32xx_set_irq_type(unsigned int irq, int use_high_level, |
| 233 | int use_edge) |
| 234 | { |
| 235 | unsigned int reg, ctrl, mask; |
| 236 | |
| 237 | get_controller(irq, &ctrl, &mask); |
| 238 | |
| 239 | /* Activation level, high or low */ |
| 240 | reg = __raw_readl(LPC32XX_INTC_POLAR(ctrl)); |
| 241 | if (use_high_level) |
| 242 | reg |= mask; |
| 243 | else |
| 244 | reg &= ~mask; |
| 245 | __raw_writel(reg, LPC32XX_INTC_POLAR(ctrl)); |
| 246 | |
| 247 | /* Activation type, edge or level */ |
| 248 | reg = __raw_readl(LPC32XX_INTC_ACT_TYPE(ctrl)); |
| 249 | if (use_edge) |
| 250 | reg |= mask; |
| 251 | else |
| 252 | reg &= ~mask; |
| 253 | __raw_writel(reg, LPC32XX_INTC_ACT_TYPE(ctrl)); |
| 254 | |
| 255 | /* Use same polarity for the wake events */ |
| 256 | if (lpc32xx_events[irq].mask != 0) { |
| 257 | reg = __raw_readl(lpc32xx_events[irq].event_group->edge_reg); |
| 258 | |
| 259 | if (use_high_level) |
| 260 | reg |= lpc32xx_events[irq].mask; |
| 261 | else |
| 262 | reg &= ~lpc32xx_events[irq].mask; |
| 263 | |
| 264 | __raw_writel(reg, lpc32xx_events[irq].event_group->edge_reg); |
| 265 | } |
| 266 | } |
| 267 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 268 | static int lpc32xx_set_irq_type(struct irq_data *d, unsigned int type) |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 269 | { |
| 270 | switch (type) { |
| 271 | case IRQ_TYPE_EDGE_RISING: |
| 272 | /* Rising edge sensitive */ |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 273 | __lpc32xx_set_irq_type(d->irq, 1, 1); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 274 | break; |
| 275 | |
| 276 | case IRQ_TYPE_EDGE_FALLING: |
| 277 | /* Falling edge sensitive */ |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 278 | __lpc32xx_set_irq_type(d->irq, 0, 1); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 279 | break; |
| 280 | |
| 281 | case IRQ_TYPE_LEVEL_LOW: |
| 282 | /* Low level sensitive */ |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 283 | __lpc32xx_set_irq_type(d->irq, 0, 0); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 284 | break; |
| 285 | |
| 286 | case IRQ_TYPE_LEVEL_HIGH: |
| 287 | /* High level sensitive */ |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 288 | __lpc32xx_set_irq_type(d->irq, 1, 0); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 289 | break; |
| 290 | |
| 291 | /* Other modes are not supported */ |
| 292 | default: |
| 293 | return -EINVAL; |
| 294 | } |
| 295 | |
| 296 | /* Ok to use the level handler for all types */ |
Thomas Gleixner | 6845664a | 2011-03-24 13:25:22 +0100 | [diff] [blame] | 297 | irq_set_handler(d->irq, handle_level_irq); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 298 | |
| 299 | return 0; |
| 300 | } |
| 301 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 302 | static int lpc32xx_irq_wake(struct irq_data *d, unsigned int state) |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 303 | { |
| 304 | unsigned long eventreg; |
| 305 | |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 306 | if (lpc32xx_events[d->irq].mask != 0) { |
| 307 | eventreg = __raw_readl(lpc32xx_events[d->irq]. |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 308 | event_group->enab_reg); |
| 309 | |
| 310 | if (state) |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 311 | eventreg |= lpc32xx_events[d->irq].mask; |
Roland Stigge | 94ed783 | 2012-02-27 17:28:02 +0100 | [diff] [blame^] | 312 | else { |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 313 | eventreg &= ~lpc32xx_events[d->irq].mask; |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 314 | |
Roland Stigge | 94ed783 | 2012-02-27 17:28:02 +0100 | [diff] [blame^] | 315 | /* |
| 316 | * When disabling the wakeup, clear the latched |
| 317 | * event |
| 318 | */ |
| 319 | __raw_writel(lpc32xx_events[d->irq].mask, |
| 320 | lpc32xx_events[d->irq]. |
| 321 | event_group->rawstat_reg); |
| 322 | } |
| 323 | |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 324 | __raw_writel(eventreg, |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 325 | lpc32xx_events[d->irq].event_group->enab_reg); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 326 | |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | /* Clear event */ |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 331 | __raw_writel(lpc32xx_events[d->irq].mask, |
| 332 | lpc32xx_events[d->irq].event_group->rawstat_reg); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 333 | |
| 334 | return -ENODEV; |
| 335 | } |
| 336 | |
| 337 | static void __init lpc32xx_set_default_mappings(unsigned int apr, |
| 338 | unsigned int atr, unsigned int offset) |
| 339 | { |
| 340 | unsigned int i; |
| 341 | |
| 342 | /* Set activation levels for each interrupt */ |
| 343 | i = 0; |
| 344 | while (i < 32) { |
| 345 | __lpc32xx_set_irq_type(offset + i, ((apr >> i) & 0x1), |
| 346 | ((atr >> i) & 0x1)); |
| 347 | i++; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | static struct irq_chip lpc32xx_irq_chip = { |
Lennert Buytenhek | 56385381 | 2010-11-29 10:35:20 +0100 | [diff] [blame] | 352 | .irq_ack = lpc32xx_ack_irq, |
| 353 | .irq_mask = lpc32xx_mask_irq, |
| 354 | .irq_unmask = lpc32xx_unmask_irq, |
| 355 | .irq_set_type = lpc32xx_set_irq_type, |
| 356 | .irq_set_wake = lpc32xx_irq_wake |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 357 | }; |
| 358 | |
| 359 | static void lpc32xx_sic1_handler(unsigned int irq, struct irq_desc *desc) |
| 360 | { |
| 361 | unsigned long ints = __raw_readl(LPC32XX_INTC_STAT(LPC32XX_SIC1_BASE)); |
| 362 | |
| 363 | while (ints != 0) { |
| 364 | int irqno = fls(ints) - 1; |
| 365 | |
| 366 | ints &= ~(1 << irqno); |
| 367 | |
| 368 | generic_handle_irq(LPC32XX_SIC1_IRQ(irqno)); |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | static void lpc32xx_sic2_handler(unsigned int irq, struct irq_desc *desc) |
| 373 | { |
| 374 | unsigned long ints = __raw_readl(LPC32XX_INTC_STAT(LPC32XX_SIC2_BASE)); |
| 375 | |
| 376 | while (ints != 0) { |
| 377 | int irqno = fls(ints) - 1; |
| 378 | |
| 379 | ints &= ~(1 << irqno); |
| 380 | |
| 381 | generic_handle_irq(LPC32XX_SIC2_IRQ(irqno)); |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | void __init lpc32xx_init_irq(void) |
| 386 | { |
| 387 | unsigned int i; |
| 388 | |
| 389 | /* Setup MIC */ |
| 390 | __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_MIC_BASE)); |
| 391 | __raw_writel(MIC_APR_DEFAULT, LPC32XX_INTC_POLAR(LPC32XX_MIC_BASE)); |
| 392 | __raw_writel(MIC_ATR_DEFAULT, LPC32XX_INTC_ACT_TYPE(LPC32XX_MIC_BASE)); |
| 393 | |
| 394 | /* Setup SIC1 */ |
| 395 | __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_SIC1_BASE)); |
Roland Stigge | 35dd0a7 | 2012-02-27 17:28:02 +0100 | [diff] [blame] | 396 | __raw_writel(SIC1_APR_DEFAULT, LPC32XX_INTC_POLAR(LPC32XX_SIC1_BASE)); |
| 397 | __raw_writel(SIC1_ATR_DEFAULT, |
| 398 | LPC32XX_INTC_ACT_TYPE(LPC32XX_SIC1_BASE)); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 399 | |
| 400 | /* Setup SIC2 */ |
| 401 | __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_SIC2_BASE)); |
Roland Stigge | 35dd0a7 | 2012-02-27 17:28:02 +0100 | [diff] [blame] | 402 | __raw_writel(SIC2_APR_DEFAULT, LPC32XX_INTC_POLAR(LPC32XX_SIC2_BASE)); |
| 403 | __raw_writel(SIC2_ATR_DEFAULT, |
| 404 | LPC32XX_INTC_ACT_TYPE(LPC32XX_SIC2_BASE)); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 405 | |
| 406 | /* Configure supported IRQ's */ |
| 407 | for (i = 0; i < NR_IRQS; i++) { |
Thomas Gleixner | f38c02f | 2011-03-24 13:35:09 +0100 | [diff] [blame] | 408 | irq_set_chip_and_handler(i, &lpc32xx_irq_chip, |
| 409 | handle_level_irq); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 410 | set_irq_flags(i, IRQF_VALID); |
| 411 | } |
| 412 | |
| 413 | /* Set default mappings */ |
| 414 | lpc32xx_set_default_mappings(MIC_APR_DEFAULT, MIC_ATR_DEFAULT, 0); |
| 415 | lpc32xx_set_default_mappings(SIC1_APR_DEFAULT, SIC1_ATR_DEFAULT, 32); |
| 416 | lpc32xx_set_default_mappings(SIC2_APR_DEFAULT, SIC2_ATR_DEFAULT, 64); |
| 417 | |
| 418 | /* mask all interrupts except SUBIRQ */ |
| 419 | __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_MIC_BASE)); |
| 420 | __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_SIC1_BASE)); |
| 421 | __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_SIC2_BASE)); |
| 422 | |
| 423 | /* MIC SUBIRQx interrupts will route handling to the chain handlers */ |
Thomas Gleixner | 6845664a | 2011-03-24 13:25:22 +0100 | [diff] [blame] | 424 | irq_set_chained_handler(IRQ_LPC32XX_SUB1IRQ, lpc32xx_sic1_handler); |
| 425 | irq_set_chained_handler(IRQ_LPC32XX_SUB2IRQ, lpc32xx_sic2_handler); |
Kevin Wells | c4a0208 | 2010-02-26 15:53:41 -0800 | [diff] [blame] | 426 | |
| 427 | /* Initially disable all wake events */ |
| 428 | __raw_writel(0, LPC32XX_CLKPWR_P01_ER); |
| 429 | __raw_writel(0, LPC32XX_CLKPWR_INT_ER); |
| 430 | __raw_writel(0, LPC32XX_CLKPWR_PIN_ER); |
| 431 | |
| 432 | /* |
| 433 | * Default wake activation polarities, all pin sources are low edge |
| 434 | * triggered |
| 435 | */ |
| 436 | __raw_writel(LPC32XX_CLKPWR_INTSRC_TS_P_BIT | |
| 437 | LPC32XX_CLKPWR_INTSRC_MSTIMER_BIT | |
| 438 | LPC32XX_CLKPWR_INTSRC_RTC_BIT, |
| 439 | LPC32XX_CLKPWR_INT_AP); |
| 440 | __raw_writel(0, LPC32XX_CLKPWR_PIN_AP); |
| 441 | |
| 442 | /* Clear latched wake event states */ |
| 443 | __raw_writel(__raw_readl(LPC32XX_CLKPWR_PIN_RS), |
| 444 | LPC32XX_CLKPWR_PIN_RS); |
| 445 | __raw_writel(__raw_readl(LPC32XX_CLKPWR_INT_RS), |
| 446 | LPC32XX_CLKPWR_INT_RS); |
| 447 | } |