irqchip: s3c24xx: globally keep track of the created intc instances
From: Heiko Stuebner <heiko@...> Date: Sat, 23 Mar 2013 15:24:01 +0100
Commit-Message
For dt-enabled machines we want to use a big irq_domain over all controllers and therefore need to access not only the main controllers but the sub-controller as well. Signed-off-by: Heiko Stuebner <heiko@...>
Patch-Comment
drivers/irqchip/irq-s3c24xx.c | 99 +++++++++++++++++++++-------------------- 1 file changed, 50 insertions(+), 49 deletions(-)
Statistics
- 50 lines added
- 49 lines removed
Changes
------------------------ drivers/irqchip/irq-s3c24xx.c -------------------------
index 7cba4f0..9914abd 100644
@@ -69,6 +69,14 @@ struct s3c_irq_intc {
struct s3c_irq_data *irqs;
};
+/*
+ * Array holding pointers to the global controller structs
+ * [0] ... main_intc
+ * [1] ... sub_intc
+ * [2] ... main_intc2 on s3c2416
+ */
+static struct s3c_irq_intc *s3c_intc[3];
+
static void s3c_irq_mask(struct irq_data *data)
{
struct s3c_irq_intc *intc = data->domain->host_data;
@@ -307,9 +315,6 @@ static void s3c_irq_demux(unsigned int irq, struct irq_desc *desc)
chained_irq_exit(chip, desc);
}
static inline int s3c24xx_handle_intc(struct s3c_irq_intc *intc,
struct pt_regs *regs)
{
@@ -345,12 +350,12 @@ static inline int s3c24xx_handle_intc(struct s3c_irq_intc *intc,
asmlinkage void __exception_irq_entry s3c24xx_handle_irq(struct pt_regs *regs)
{
do {
+ if (likely(s3c_intc[0]))
+ if (s3c24xx_handle_intc(s3c_intc[0], regs))
continue;
+ if (s3c_intc[2])
+ if (s3c24xx_handle_intc(s3c_intc[2], regs))
continue;
break;
@@ -577,11 +582,6 @@ static struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np,
goto err;
}
set_handle_irq(s3c24xx_handle_irq);
return intc;
@@ -670,20 +670,20 @@ static struct s3c_irq_data init_s3c2410subint[32] = {
void __init s3c2410_init_irq(void)
{
#ifdef CONFIG_FIQ
init_FIQ(FIQ_START);
#endif
+ s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2410base[0], NULL,
+ 0x4a000000);
+ if (IS_ERR(s3c_intc[0])) {
pr_err("irq: could not create main interrupt controller\n");
return;
}
+ s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2410subint[0],
+ s3c_intc[0], 0x4a000018);
+ s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
}
#endif
@@ -770,22 +770,22 @@ static struct s3c_irq_data init_s3c2412subint[32] = {
void s3c2412_init_irq(void)
{
pr_info("S3C2412: IRQ Support\n");
#ifdef CONFIG_FIQ
init_FIQ(FIQ_START);
#endif
+ s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2412base[0], NULL,
+ 0x4a000000);
+ if (IS_ERR(s3c_intc[0])) {
pr_err("irq: could not create main interrupt controller\n");
return;
}
+ s3c24xx_init_intc(NULL, &init_s3c2412eint[0], s3c_intc[0], 0x560000a4);
+ s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2412subint[0],
+ s3c_intc[0], 0x4a000018);
}
#endif
@@ -869,24 +869,25 @@ static struct s3c_irq_data init_s3c2416_second[32] = {
void __init s3c2416_init_irq(void)
{
pr_info("S3C2416: IRQ Support\n");
#ifdef CONFIG_FIQ
init_FIQ(FIQ_START);
#endif
+ s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2416base[0], NULL,
+ 0x4a000000);
+ if (IS_ERR(s3c_intc[0])) {
pr_err("irq: could not create main interrupt controller\n");
return;
}
+ s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
+ s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2416subint[0],
+ s3c_intc[0], 0x4a000018);
+ s3c_intc[2] = s3c24xx_init_intc(NULL, &init_s3c2416_second[0],
+ NULL, 0x4a000040);
}
#endif
@@ -947,22 +948,22 @@ static struct s3c_irq_data init_s3c2440subint[32] = {
void __init s3c2440_init_irq(void)
{
pr_info("S3C2440: IRQ Support\n");
#ifdef CONFIG_FIQ
init_FIQ(FIQ_START);
#endif
+ s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2440base[0], NULL,
+ 0x4a000000);
+ if (IS_ERR(s3c_intc[0])) {
pr_err("irq: could not create main interrupt controller\n");
return;
}
+ s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
+ s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2440subint[0],
+ s3c_intc[0], 0x4a000018);
}
#endif
@@ -1020,22 +1021,22 @@ static struct s3c_irq_data init_s3c2442subint[32] = {
void __init s3c2442_init_irq(void)
{
pr_info("S3C2442: IRQ Support\n");
#ifdef CONFIG_FIQ
init_FIQ(FIQ_START);
#endif
+ s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2442base[0], NULL,
+ 0x4a000000);
+ if (IS_ERR(s3c_intc[0])) {
pr_err("irq: could not create main interrupt controller\n");
return;
}
+ s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
+ s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2442subint[0],
+ s3c_intc[0], 0x4a000018);
}
#endif
@@ -1110,21 +1111,21 @@ static struct s3c_irq_data init_s3c2443subint[32] = {
void __init s3c2443_init_irq(void)
{
pr_info("S3C2443: IRQ Support\n");
#ifdef CONFIG_FIQ
init_FIQ(FIQ_START);
#endif
+ s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2443base[0], NULL,
+ 0x4a000000);
+ if (IS_ERR(s3c_intc[0])) {
pr_err("irq: could not create main interrupt controller\n");
return;
}
+ s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
+ s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2443subint[0],
+ s3c_intc[0], 0x4a000018);
}
#endif