aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/sh/kernel/cpu/irq/intc-sh5.c73
1 files changed, 38 insertions, 35 deletions
diff --git a/arch/sh/kernel/cpu/irq/intc-sh5.c b/arch/sh/kernel/cpu/irq/intc-sh5.c
index d6e0e2bdaad5..de45c6a3e33b 100644
--- a/arch/sh/kernel/cpu/irq/intc-sh5.c
+++ b/arch/sh/kernel/cpu/irq/intc-sh5.c
@@ -184,9 +184,8 @@ int intc_irq_describe(char* p, int irq)
184 184
185void __init plat_irq_setup(void) 185void __init plat_irq_setup(void)
186{ 186{
187 unsigned long long __dummy0, __dummy1=~0x00000000100000f0; 187 unsigned long long __dummy0, __dummy1=~0x00000000100000f0;
188 unsigned long reg; 188 unsigned long reg;
189 unsigned long data;
190 int i; 189 int i;
191 190
192 intc_virt = onchip_remap(INTC_BASE, 1024, "INTC"); 191 intc_virt = onchip_remap(INTC_BASE, 1024, "INTC");
@@ -196,11 +195,8 @@ void __init plat_irq_setup(void)
196 195
197 196
198 /* Set default: per-line enable/disable, priority driven ack/eoi */ 197 /* Set default: per-line enable/disable, priority driven ack/eoi */
199 for (i = 0; i < NR_INTC_IRQS; i++) { 198 for (i = 0; i < NR_INTC_IRQS; i++)
200 if (platform_int_priority[i] != NO_PRIORITY) { 199 irq_desc[i].chip = &intc_irq_type;
201 irq_desc[i].chip = &intc_irq_type;
202 }
203 }
204 200
205 201
206 /* Disable all interrupts and set all priorities to 0 to avoid trouble */ 202 /* Disable all interrupts and set all priorities to 0 to avoid trouble */
@@ -211,35 +207,42 @@ void __init plat_irq_setup(void)
211 ctrl_outl( NO_PRIORITY, reg); 207 ctrl_outl( NO_PRIORITY, reg);
212 208
213 209
214 /* Set IRLM */ 210#ifdef CONFIG_SH_CAYMAN
215 /* If all the priorities are set to 'no priority', then 211 {
216 * assume we are using encoded mode. 212 unsigned long data;
217 */ 213
218 irlm = platform_int_priority[IRQ_IRL0] + platform_int_priority[IRQ_IRL1] + \ 214 /* Set IRLM */
219 platform_int_priority[IRQ_IRL2] + platform_int_priority[IRQ_IRL3]; 215 /* If all the priorities are set to 'no priority', then
220 216 * assume we are using encoded mode.
221 if (irlm == NO_PRIORITY) { 217 */
222 /* IRLM = 0 */ 218 irlm = platform_int_priority[IRQ_IRL0] +
223 reg = INTC_ICR_CLEAR; 219 platform_int_priority[IRQ_IRL1] +
224 i = IRQ_INTA; 220 platform_int_priority[IRQ_IRL2] +
225 printk("Trying to use encoded IRL0-3. IRLs unsupported.\n"); 221 platform_int_priority[IRQ_IRL3];
226 } else { 222 if (irlm == NO_PRIORITY) {
227 /* IRLM = 1 */ 223 /* IRLM = 0 */
228 reg = INTC_ICR_SET; 224 reg = INTC_ICR_CLEAR;
229 i = IRQ_IRL0; 225 i = IRQ_INTA;
230 } 226 printk("Trying to use encoded IRL0-3. IRLs unsupported.\n");
231 ctrl_outl(INTC_ICR_IRLM, reg); 227 } else {
232 228 /* IRLM = 1 */
233 /* Set interrupt priorities according to platform description */ 229 reg = INTC_ICR_SET;
234 for (data = 0, reg = INTC_INTPRI_0; i < NR_INTC_IRQS; i++) { 230 i = IRQ_IRL0;
235 data |= platform_int_priority[i] << ((i % INTC_INTPRI_PPREG) * 4);
236 if ((i % INTC_INTPRI_PPREG) == (INTC_INTPRI_PPREG - 1)) {
237 /* Upon the 7th, set Priority Register */
238 ctrl_outl(data, reg);
239 data = 0;
240 reg += 8;
241 } 231 }
242 } 232 ctrl_outl(INTC_ICR_IRLM, reg);
233
234 /* Set interrupt priorities according to platform description */
235 for (data = 0, reg = INTC_INTPRI_0; i < NR_INTC_IRQS; i++) {
236 data |= platform_int_priority[i] <<
237 ((i % INTC_INTPRI_PPREG) * 4);
238 if ((i % INTC_INTPRI_PPREG) == (INTC_INTPRI_PPREG - 1)) {
239 /* Upon the 7th, set Priority Register */
240 ctrl_outl(data, reg);
241 data = 0;
242 reg += 8;
243 }
244 }
245#endif
243 246
244 /* 247 /*
245 * And now let interrupts come in. 248 * And now let interrupts come in.