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authorMagnus Damm <damm@igel.co.jp>2007-09-10 12:03:50 +0900
committerPaul Mundt <lethal@linux-sh.org>2007-09-21 11:57:51 +0900
commit953c8ef250fc6c329d1607cf9cd7fac1d72d7579 (patch)
treebd327af6c320d890ab61dd6893fbdd35fca86c80 /arch/sh/kernel/cpu/sh4a/setup-sh7785.c
parent123f5f188638bfc673aca22ade64b863ec3a2804 (diff)
sh: intc - irl mode update for sh7780 and sh7785
This patch contains the following fixes and improvements: - Fix address typo for INTMSK2 / INTMSKCLR2 registers on sh7780. - Adds IRQ_MODE_IRLnnnn_MASK using intc controller for IRL masking. - Good old IRQ_MODE_IRLnnnn should not register any intc controller. - plat_irq_setup_pins() now selects IRL or IRQ mode. - the holding function is now disabled using ICR0. By default all external pin interrupts are disabled. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/sh4a/setup-sh7785.c')
-rw-r--r--arch/sh/kernel/cpu/sh4a/setup-sh7785.c45
1 files changed, 44 insertions, 1 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7785.c b/arch/sh/kernel/cpu/sh4a/setup-sh7785.c
index a595203f74c..486dabe4d27 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7785.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7785.c
@@ -10,6 +10,7 @@
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/serial.h>
+#include <linux/io.h>
#include <asm/sci.h>
static struct plat_sci_port sci_platform_data[] = {
@@ -282,24 +283,66 @@ static DECLARE_INTC_DESC(intc_desc_irl0123, "sh7785-irl0123", vectors_irl0123,
static DECLARE_INTC_DESC(intc_desc_irl4567, "sh7785-irl4567", vectors_irl4567,
NULL, NULL, mask_registers, NULL, NULL);
+#define INTC_ICR0 0xffd00000
+#define INTC_INTMSK0 0xffd00044
+#define INTC_INTMSK1 0xffd00048
+#define INTC_INTMSK2 0xffd40080
+#define INTC_INTMSKCLR1 0xffd00068
+#define INTC_INTMSKCLR2 0xffd40084
+
void __init plat_irq_setup(void)
{
+ /* disable IRQ3-0 + IRQ7-4 */
+ ctrl_outl(0xff000000, INTC_INTMSK0);
+
+ /* disable IRL3-0 + IRL7-4 */
+ ctrl_outl(0xc0000000, INTC_INTMSK1);
+ ctrl_outl(0xfffefffe, INTC_INTMSK2);
+
+ /* select IRL mode for IRL3-0 + IRL7-4 */
+ ctrl_outl(ctrl_inl(INTC_ICR0) & ~0x00c00000, INTC_ICR0);
+
+ /* disable holding function, ie enable "SH-4 Mode" */
+ ctrl_outl(ctrl_inl(INTC_ICR0) | 0x00200000, INTC_ICR0);
+
register_intc_controller(&intc_desc);
}
void __init plat_irq_setup_pins(int mode)
{
+ ctrl_outl(0xc0000000, INTC_INTMSKCLR1);
+ ctrl_outl(0xfffefffe, INTC_INTMSKCLR2);
+ return;
+
switch (mode) {
case IRQ_MODE_IRQ7654:
+ /* select IRQ mode for IRL7-4 */
+ ctrl_outl(ctrl_inl(INTC_ICR0) | 0x00400000, INTC_ICR0);
register_intc_controller(&intc_desc_irq4567);
break;
case IRQ_MODE_IRQ3210:
+ /* select IRQ mode for IRL3-0 */
+ ctrl_outl(ctrl_inl(INTC_ICR0) | 0x00800000, INTC_ICR0);
register_intc_controller(&intc_desc_irq0123);
break;
case IRQ_MODE_IRL7654:
- register_intc_controller(&intc_desc_irl4567);
+ /* enable IRL7-4 but don't provide any masking */
+ ctrl_outl(0x40000000, INTC_INTMSKCLR1);
+ ctrl_outl(0x0000fffe, INTC_INTMSKCLR2);
break;
case IRQ_MODE_IRL3210:
+ /* enable IRL0-3 but don't provide any masking */
+ ctrl_outl(0x80000000, INTC_INTMSKCLR1);
+ ctrl_outl(0xfffe0000, INTC_INTMSKCLR2);
+ break;
+ case IRQ_MODE_IRL7654_MASK:
+ /* enable IRL7-4 and mask using cpu intc controller */
+ ctrl_outl(0x40000000, INTC_INTMSKCLR1);
+ register_intc_controller(&intc_desc_irl4567);
+ break;
+ case IRQ_MODE_IRL3210_MASK:
+ /* enable IRL0-3 and mask using cpu intc controller */
+ ctrl_outl(0x80000000, INTC_INTMSKCLR1);
register_intc_controller(&intc_desc_irl0123);
break;
default: