* Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> [091014 15:10]:
> From: Rajendra Nayak <rnayak@xxxxxx>
>
> Signed-off-by: Rajendra Nayak <rnayak@xxxxxx>
> Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
> ---
> arch/arm/mach-omap2/irq.c | 66 ++++++++++++++++++++++++++++++++
> arch/arm/plat-omap/include/mach/irqs.h | 5 ++
> 2 files changed, 71 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
> index 8db0e3a..fa2524d 100644
> --- a/arch/arm/mach-omap2/irq.c
> +++ b/arch/arm/mach-omap2/irq.c
> @@ -25,6 +25,10 @@
> #define INTC_SYSSTATUS 0x0014
> #define INTC_SIR 0x0040
> #define INTC_CONTROL 0x0048
> +#define INTC_PROTECTION 0x004C
> +#define INTC_IDLE 0x0050
> +#define INTC_THRESHOLD 0x0068
> +#define INTC_MIR0 0x0084
> #define INTC_MIR_CLEAR0 0x0088
> #define INTC_MIR_SET0 0x008c
> #define INTC_PENDING_IRQ0 0x0098
> @@ -48,6 +52,18 @@ static struct omap_irq_bank {
> },
> };
>
> +/* Structure to save interrupt controller context */
> +struct omap3_intc_regs {
> + u32 sysconfig;
> + u32 protection;
> + u32 idle;
> + u32 threshold;
> + u32 ilr[INTCPS_NR_IRQS];
> + u32 mir[INTCPS_NR_MIR_REGS];
> +};
> +
> +static struct omap3_intc_regs intc_context[ARRAY_SIZE(irq_banks)];
> +
> /* INTC bank register get/set */
>
> static void intc_bank_write_reg(u32 val, struct omap_irq_bank *bank, u16 reg)
> @@ -201,3 +217,53 @@ void __init omap_init_irq(void)
> }
> }
>
> +#ifdef CONFIG_ARCH_OMAP3
> +void omap3_intc_save_context(void)
> +{
> + int ind = 0, i = 0;
> + for (ind = 0; ind < ARRAY_SIZE(irq_banks); ind++) {
> + struct omap_irq_bank *bank = irq_banks + ind;
> + intc_context[ind].sysconfig =
> + intc_bank_read_reg(bank, INTC_SYSCONFIG);
> + intc_context[ind].protection =
> + intc_bank_read_reg(bank, INTC_PROTECTION);
> + intc_context[ind].idle =
> + intc_bank_read_reg(bank, INTC_IDLE);
> + intc_context[ind].threshold =
> + intc_bank_read_reg(bank, INTC_THRESHOLD);
> + for (i = 0; i < INTCPS_NR_IRQS; i++)
> + intc_context[ind].ilr[i] =
> + intc_bank_read_reg(bank, (0x100 + 0x4*ind));
> + for (i = 0; i < INTCPS_NR_MIR_REGS; i++)
> + intc_context[ind].mir[i] =
> + intc_bank_read_reg(&irq_banks[0], INTC_MIR0 +
> + (0x20 * i));
> + }
> +}
> +
These too look like they should work on 24xx and 34xx?
> +void omap3_intc_restore_context(void)
> +{
> + int ind = 0, i = 0;
> +
> + for (ind = 0; ind < ARRAY_SIZE(irq_banks); ind++) {
> + struct omap_irq_bank *bank = irq_banks + ind;
> + intc_bank_write_reg(intc_context[ind].sysconfig,
> + bank, INTC_SYSCONFIG);
> + intc_bank_write_reg(intc_context[ind].sysconfig,
> + bank, INTC_SYSCONFIG);
> + intc_bank_write_reg(intc_context[ind].protection,
> + bank, INTC_PROTECTION);
> + intc_bank_write_reg(intc_context[ind].idle,
> + bank, INTC_IDLE);
> + intc_bank_write_reg(intc_context[ind].threshold,
> + bank, INTC_THRESHOLD);
> + for (i = 0; i < INTCPS_NR_IRQS; i++)
> + intc_bank_write_reg(intc_context[ind].ilr[i],
> + bank, (0x100 + 0x4*ind));
> + for (i = 0; i < INTCPS_NR_MIR_REGS; i++)
> + intc_bank_write_reg(intc_context[ind].mir[i],
> + &irq_banks[0], INTC_MIR0 + (0x20 * i));
> + }
> + /* MIRs are saved and restore with other PRCM registers */
> +}
> +#endif /* CONFIG_ARCH_OMAP3 */
> diff --git a/arch/arm/plat-omap/include/mach/irqs.h b/arch/arm/plat-omap/include/mach/irqs.h
> index 6a6d028..2473910 100644
> --- a/arch/arm/plat-omap/include/mach/irqs.h
> +++ b/arch/arm/plat-omap/include/mach/irqs.h
> @@ -477,9 +477,14 @@
>
> #define OMAP_IRQ_BIT(irq) (1 << ((irq) % 32))
>
> +#define INTCPS_NR_MIR_REGS 3
> +#define INTCPS_NR_IRQS 96
> +
> #ifndef __ASSEMBLY__
> extern void omap_init_irq(void);
> extern int omap_irq_pending(void);
> +void omap3_intc_save_context(void);
> +void omap3_intc_restore_context(void);
> #endif
>
> #include <mach/hardware.h>
> --
> 1.6.4.3
>
>
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