ARM: S3C24XX: transform s3c2412 irqs into new structure

Contains only the new mapping structure. The special handling
of the eint0 to eint3 interrupts still needs to be solved.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 66 insertions, 56 deletions

diff --git a/arch/arm/mach-s3c24xx/irq.c b/arch/arm/mach-s3c24xx/irq.c
index 55a73c4d2c95..292f974c5294 100644
--- a/arch/arm/mach-s3c24xx/irq.c
+++ b/arch/arm/mach-s3c24xx/irq.c
@@ -627,9 +627,58 @@ void __init s3c24xx_init_irq(void)
 }
 
 #ifdef CONFIG_CPU_S3C2412
+static struct s3c_irq_data init_s3c2412base[32] = {
+        { .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
+        { .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
+        { .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
+        { .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
+        { .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
+        { .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
+        { .type = S3C_IRQTYPE_NONE, }, /* reserved */
+        { .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
+        { .type = S3C_IRQTYPE_EDGE, }, /* TICK */
+        { .type = S3C_IRQTYPE_EDGE, }, /* WDT */
+        { .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
+        { .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* LCD */
+        { .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
+        { .type = S3C_IRQTYPE_LEVEL, }, /* SDI/CF */
+        { .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
+        { .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
+        { .type = S3C_IRQTYPE_NONE, }, /* reserved */
+        { .type = S3C_IRQTYPE_EDGE, }, /* USBD */
+        { .type = S3C_IRQTYPE_EDGE, }, /* USBH */
+        { .type = S3C_IRQTYPE_EDGE, }, /* IIC */
+        { .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
+        { .type = S3C_IRQTYPE_EDGE, }, /* RTC */
+        { .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
+};
 
-#define INTMSK(start, end) ((1 << ((end) + 1 - (start))) - 1)
-#define INTMSK_SUB(start, end) (INTMSK(start, end) << ((start - S3C2410_IRQSUB(0))))
+static struct s3c_irq_data init_s3c2412subint[32] = {
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
+        { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
+        { .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
+        { .type = S3C_IRQTYPE_NONE, },
+        { .type = S3C_IRQTYPE_NONE, },
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* SDI */
+        { .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* CF */
+};
 
 /* the s3c2412 changes the behaviour of IRQ_EINT0 through IRQ_EINT3 by
  * having them turn up in both the INT* and the EINT* registers. Whilst
@@ -698,72 +747,33 @@ static struct irq_chip s3c2412_irq_eint0t4 = {
         .irq_set_type   = s3c_irqext_type,
 };
 
-#define INTBIT(x)       (1 << ((x) - S3C2410_IRQSUB(0)))
-
-/* CF and SDI sub interrupts */
-
-static void s3c2412_irq_demux_cfsdi(unsigned int irq, struct irq_desc *desc)
-{
-        unsigned int subsrc, submsk;
-
-        subsrc = __raw_readl(S3C2410_SUBSRCPND);
-        submsk = __raw_readl(S3C2410_INTSUBMSK);
-
-        subsrc  &= ~submsk;
-
-        if (subsrc & INTBIT(IRQ_S3C2412_SDI))
-                generic_handle_irq(IRQ_S3C2412_SDI);
-
-        if (subsrc & INTBIT(IRQ_S3C2412_CF))
-                generic_handle_irq(IRQ_S3C2412_CF);
-}
-
-#define INTMSK_CFSDI    (1UL << (IRQ_S3C2412_CFSDI - IRQ_EINT0))
-#define SUBMSK_CFSDI    INTMSK_SUB(IRQ_S3C2412_SDI, IRQ_S3C2412_CF)
-
-static void s3c2412_irq_cfsdi_mask(struct irq_data *data)
+void s3c2412_init_irq(void)
 {
-        s3c_irqsub_mask(data->irq, INTMSK_CFSDI, SUBMSK_CFSDI);
-}
+        struct s3c_irq_intc *main_intc;
+        unsigned int irqno;
 
-static void s3c2412_irq_cfsdi_unmask(struct irq_data *data)
-{
-        s3c_irqsub_unmask(data->irq, INTMSK_CFSDI);
-}
+        pr_info("S3C2412: IRQ Support\n");
 
-static void s3c2412_irq_cfsdi_ack(struct irq_data *data)
-{
-        s3c_irqsub_maskack(data->irq, INTMSK_CFSDI, SUBMSK_CFSDI);
-}
+#ifdef CONFIG_FIQ
+        init_FIQ(FIQ_START);
+#endif
 
-static struct irq_chip s3c2412_irq_cfsdi = {
-        .name           = "s3c2412-cfsdi",
-        .irq_ack        = s3c2412_irq_cfsdi_ack,
-        .irq_mask       = s3c2412_irq_cfsdi_mask,
-        .irq_unmask     = s3c2412_irq_cfsdi_unmask,
-};
+        main_intc = s3c24xx_init_intc(NULL, &init_s3c2412base[0], NULL, 0x4a000000);
+        if (IS_ERR(main_intc)) {
+                pr_err("irq: could not create main interrupt controller\n");
+                return;
+        }
 
-void s3c2412_init_irq(void)
-{
-        unsigned int irqno;
+        s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
+        s3c24xx_init_intc(NULL, &init_s3c2412subint[0], main_intc, 0x4a000018);
 
-        s3c24xx_init_irq();
+        /* special handling for eints 0 to 3 */
 
         for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) {
                 irq_set_chip_and_handler(irqno, &s3c2412_irq_eint0t4,
                                          handle_edge_irq);
                 set_irq_flags(irqno, IRQF_VALID);
         }
-
-        /* add demux support for CF/SDI */
-
-        irq_set_chained_handler(IRQ_S3C2412_CFSDI, s3c2412_irq_demux_cfsdi);
-
-        for (irqno = IRQ_S3C2412_SDI; irqno <= IRQ_S3C2412_CF; irqno++) {
-                irq_set_chip_and_handler(irqno, &s3c2412_irq_cfsdi,
-                                         handle_level_irq);
-                set_irq_flags(irqno, IRQF_VALID);
-        }
 }
 #endif