diff options
| author | Darius Augulis <augulis.darius@gmail.com> | 2008-09-09 11:29:41 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2008-09-09 12:13:50 +0200 |
| commit | 479c901f59762732dee305166ae477171cae3617 (patch) | |
| tree | b061499771021b431d54ec46fe66b3b31be4a37f /arch/arm/plat-mxc/irq.c | |
| parent | d7568f79d5c289d0d7859680be7b5afdcea0c9b2 (diff) | |
MXC: Lets handle IRQ by priority, defined with exported API function
Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/plat-mxc/irq.c')
| -rw-r--r-- | arch/arm/plat-mxc/irq.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/arch/arm/plat-mxc/irq.c b/arch/arm/plat-mxc/irq.c index 1053b666c676..a41abf0bdd66 100644 --- a/arch/arm/plat-mxc/irq.c +++ b/arch/arm/plat-mxc/irq.c @@ -30,14 +30,7 @@ #define AVIC_INTENABLEL (AVIC_BASE + 0x14) /* int enable reg low */ #define AVIC_INTTYPEH (AVIC_BASE + 0x18) /* int type reg high */ #define AVIC_INTTYPEL (AVIC_BASE + 0x1C) /* int type reg low */ -#define AVIC_NIPRIORITY7 (AVIC_BASE + 0x20) /* norm int priority lvl7 */ -#define AVIC_NIPRIORITY6 (AVIC_BASE + 0x24) /* norm int priority lvl6 */ -#define AVIC_NIPRIORITY5 (AVIC_BASE + 0x28) /* norm int priority lvl5 */ -#define AVIC_NIPRIORITY4 (AVIC_BASE + 0x2C) /* norm int priority lvl4 */ -#define AVIC_NIPRIORITY3 (AVIC_BASE + 0x30) /* norm int priority lvl3 */ -#define AVIC_NIPRIORITY2 (AVIC_BASE + 0x34) /* norm int priority lvl2 */ -#define AVIC_NIPRIORITY1 (AVIC_BASE + 0x38) /* norm int priority lvl1 */ -#define AVIC_NIPRIORITY0 (AVIC_BASE + 0x3C) /* norm int priority lvl0 */ +#define AVIC_NIPRIORITY(x) (AVIC_BASE + (0x20 + 4 * (7 - (x)))) /* int priority */ #define AVIC_NIVECSR (AVIC_BASE + 0x40) /* norm int vector/status */ #define AVIC_FIVECSR (AVIC_BASE + 0x44) /* fast int vector/status */ #define AVIC_INTSRCH (AVIC_BASE + 0x48) /* int source reg high */ @@ -54,6 +47,24 @@ #define IIM_PROD_REV_SH 3 #define IIM_PROD_REV_LEN 5 +#ifdef CONFIG_MXC_IRQ_PRIOR +void imx_irq_set_priority(unsigned char irq, unsigned char prio) +{ + unsigned int temp; + unsigned int mask = 0x0F << irq % 8 * 4; + + if (irq > 63) + return; + + temp = __raw_readl(AVIC_NIPRIORITY(irq / 8)); + temp &= ~mask; + temp |= prio & mask; + + __raw_writel(temp, AVIC_NIPRIORITY(irq / 8)); +} +EXPORT_SYMBOL(imx_irq_set_priority); +#endif + /* Disable interrupt number "irq" in the AVIC */ static void mxc_mask_irq(unsigned int irq) { @@ -101,10 +112,14 @@ void __init mxc_init_irq(void) set_irq_flags(i, IRQF_VALID); } + /* Set default priority value (0) for all IRQ's */ + for (i = 0; i < 8; i++) + __raw_writel(0, AVIC_NIPRIORITY(i)); + /* Set WDOG2's interrupt the highest priority level (bit 28-31) */ - reg = __raw_readl(AVIC_NIPRIORITY6); + reg = __raw_readl(AVIC_NIPRIORITY(6)); reg |= (0xF << 28); - __raw_writel(reg, AVIC_NIPRIORITY6); + __raw_writel(reg, AVIC_NIPRIORITY(6)); /* init architectures chained interrupt handler */ mxc_register_gpios(); |