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Diffstat (limited to 'arch/sh/boards/renesas/rts7751r2d/irq.c')
-rw-r--r--arch/sh/boards/renesas/rts7751r2d/irq.c179
1 files changed, 127 insertions, 52 deletions
diff --git a/arch/sh/boards/renesas/rts7751r2d/irq.c b/arch/sh/boards/renesas/rts7751r2d/irq.c
index 0bae9041aceb..7cc2813adfe4 100644
--- a/arch/sh/boards/renesas/rts7751r2d/irq.c
+++ b/arch/sh/boards/renesas/rts7751r2d/irq.c
@@ -1,84 +1,159 @@
/*
* linux/arch/sh/boards/renesas/rts7751r2d/irq.c
*
+ * Copyright (C) 2007 Magnus Damm
* Copyright (C) 2000 Kazumoto Kojima
*
- * Renesas Technology Sales RTS7751R2D Support.
+ * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1.
*
* Modified for RTS7751R2D by
* Atom Create Engineering Co., Ltd. 2002.
*/
#include <linux/init.h>
-#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/io.h>
+#include <asm/voyagergx.h>
#include <asm/rts7751r2d.h>
-#if defined(CONFIG_RTS7751R2D_REV11)
-static int mask_pos[] = {11, 9, 8, 12, 10, 6, 5, 4, 7, 14, 13, 0, 0, 0, 0};
-#else
-static int mask_pos[] = {6, 11, 9, 8, 12, 10, 5, 4, 7, 14, 13, 0, 0, 0, 0};
-#endif
+#define R2D_NR_IRL 13
-extern int voyagergx_irq_demux(int irq);
-extern void setup_voyagergx_irq(void);
+enum {
+ UNUSED = 0,
-static void enable_rts7751r2d_irq(unsigned int irq)
-{
- /* Set priority in IPR back to original value */
- ctrl_outw(ctrl_inw(IRLCNTR1) | (1 << mask_pos[irq]), IRLCNTR1);
-}
+ /* board specific interrupt sources (R2D-1 and R2D-PLUS) */
+ EXT, /* EXT_INT0-3 */
+ RTC_T, RTC_A, /* Real Time Clock */
+ AX88796, /* Ethernet controller (R2D-1 board) */
+ KEY, /* Key input (R2D-PLUS board) */
+ SDCARD, /* SD Card */
+ CF_CD, CF_IDE, /* CF Card Detect + CF IDE */
+ SM501, /* SM501 aka Voyager */
+ PCI_INTD_RTL8139, /* Ethernet controller */
+ PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */
+ PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */
+ PCI_INTB_SLOT, /* PCI Slot 3.3v (R2D-1 board) */
+ PCI_INTA_SLOT, /* PCI Slot 3.3v */
+ TP, /* Touch Panel */
+};
-static void disable_rts7751r2d_irq(unsigned int irq)
-{
- /* Set the priority in IPR to 0 */
- ctrl_outw(ctrl_inw(IRLCNTR1) & (0xffff ^ (1 << mask_pos[irq])),
- IRLCNTR1);
-}
+#ifdef CONFIG_RTS7751R2D_1
+
+/* Vectors for R2D-1 */
+static struct intc_vect vectors_r2d_1[] __initdata = {
+ INTC_IRQ(EXT, IRQ_EXT),
+ INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
+ INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD),
+ INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */
+ INTC_IRQ(SM501, IRQ_VOYAGER),
+ INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
+ INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
+ INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB),
+ INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
+ INTC_IRQ(TP, IRQ_TP),
+};
+
+/* IRLMSK mask register layout for R2D-1 */
+static struct intc_mask_reg mask_registers_r2d_1[] __initdata = {
+ { 0xa4000000, 0, 16, /* IRLMSK */
+ { TP, PCI_INTA_SLOT, PCI_INTB_SLOT,
+ PCI_INTC_PCI1520, PCI_INTD_RTL8139,
+ SM501, CF_IDE, CF_CD, SDCARD, AX88796,
+ RTC_A, RTC_T, 0, 0, 0, EXT } },
+};
+
+/* IRLn to IRQ table for R2D-1 */
+static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = {
+ IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
+ IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T,
+ IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
+ IRQ_TP,
+};
+
+static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1,
+ NULL, NULL, mask_registers_r2d_1, NULL, NULL);
+
+#endif /* CONFIG_RTS7751R2D_1 */
+
+#ifdef CONFIG_RTS7751R2D_PLUS
+
+/* Vectors for R2D-PLUS */
+static struct intc_vect vectors_r2d_plus[] __initdata = {
+ INTC_IRQ(EXT, IRQ_EXT),
+ INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
+ INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD),
+ INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE),
+ INTC_IRQ(SM501, IRQ_VOYAGER),
+ INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
+ INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
+ INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB),
+ INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
+ INTC_IRQ(TP, IRQ_TP),
+};
+
+/* IRLMSK mask register layout for R2D-PLUS */
+static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = {
+ { 0xa4000000, 0, 16, /* IRLMSK */
+ { TP, PCI_INTA_SLOT, PCI_INTB_RTL8139,
+ PCI_INTC_PCI1520, PCI_INTD_RTL8139,
+ SM501, CF_IDE, CF_CD, SDCARD, KEY,
+ RTC_A, RTC_T, 0, 0, 0, EXT } },
+};
+
+/* IRLn to IRQ table for R2D-PLUS */
+static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = {
+ IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
+ IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T,
+ IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
+ IRQ_TP,
+};
+
+static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus,
+ NULL, NULL, mask_registers_r2d_plus, NULL, NULL);
+
+#endif /* CONFIG_RTS7751R2D_PLUS */
+
+static unsigned char irl2irq[R2D_NR_IRL];
int rts7751r2d_irq_demux(int irq)
{
- return voyagergx_irq_demux(irq);
-}
+ if (irq >= R2D_NR_IRL || !irl2irq[irq])
+ return irq;
-static struct irq_chip rts7751r2d_irq_chip __read_mostly = {
- .name = "rts7751r2d",
- .mask = disable_rts7751r2d_irq,
- .unmask = enable_rts7751r2d_irq,
- .mask_ack = disable_rts7751r2d_irq,
-};
+ return irl2irq[irq];
+}
/*
* Initialize IRQ setting
*/
void __init init_rts7751r2d_IRQ(void)
{
- int i;
-
- /* IRL0=KEY Input
- * IRL1=Ethernet
- * IRL2=CF Card
- * IRL3=CF Card Insert
- * IRL4=PCMCIA
- * IRL5=VOYAGER
- * IRL6=RTC Alarm
- * IRL7=RTC Timer
- * IRL8=SD Card
- * IRL9=PCI Slot #1
- * IRL10=PCI Slot #2
- * IRL11=Extention #0
- * IRL12=Extention #1
- * IRL13=Extention #2
- * IRL14=Extention #3
- */
-
- for (i=0; i<15; i++) {
- disable_irq_nosync(i);
- set_irq_chip_and_handler_name(i, &rts7751r2d_irq_chip,
- handle_level_irq, "level");
- enable_rts7751r2d_irq(i);
+ struct intc_desc *d;
+
+ switch (ctrl_inw(PA_VERREG) & 0xf0) {
+#ifdef CONFIG_RTS7751R2D_PLUS
+ case 0x10:
+ printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n");
+ d = &intc_desc_r2d_plus;
+ memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL);
+ break;
+#endif
+#ifdef CONFIG_RTS7751R2D_1
+ case 0x00: /* according to manual */
+ case 0x30: /* in reality */
+ printk(KERN_INFO "Using R2D-1 interrupt controller.\n");
+ d = &intc_desc_r2d_1;
+ memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL);
+ break;
+#endif
+ default:
+ printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
+ ctrl_inw(PA_VERREG));
+ return;
}
+ register_intc_controller(d);
+#ifdef CONFIG_MFD_SM501
setup_voyagergx_irq();
+#endif
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 15:02:07 +0000