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| author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
| commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
| tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/h8300/platform/h8300h/irq.c | |
| parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
| download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip | |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/h8300/platform/h8300h/irq.c')
| -rw-r--r-- | arch/h8300/platform/h8300h/irq.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/h8300/platform/h8300h/irq.c b/arch/h8300/platform/h8300h/irq.c new file mode 100644 index 00000000..bc4f51bc --- /dev/null +++ b/arch/h8300/platform/h8300h/irq.c @@ -0,0 +1,82 @@ +/* + * Interrupt handling H8/300H depend. + * Yoshinori Sato <ysato@users.sourceforge.jp> + * + */ + +#include <linux/init.h> +#include <linux/errno.h> + +#include <asm/ptrace.h> +#include <asm/traps.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/gpio-internal.h> +#include <asm/regs306x.h> + +const int __initdata h8300_saved_vectors[] = { +#if defined(CONFIG_GDB_DEBUG) + TRAP3_VEC, /* TRAPA #3 is GDB breakpoint */ +#endif + -1, +}; + +const h8300_vector __initdata h8300_trap_table[] = { + 0, 0, 0, 0, 0, 0, 0, 0, + system_call, + 0, + 0, + trace_break, +}; + +int h8300_enable_irq_pin(unsigned int irq) +{ + int bitmask; + if (irq < EXT_IRQ0 || irq > EXT_IRQ5) + return 0; + + /* initialize IRQ pin */ + bitmask = 1 << (irq - EXT_IRQ0); + switch(irq) { + case EXT_IRQ0: + case EXT_IRQ1: + case EXT_IRQ2: + case EXT_IRQ3: + if (H8300_GPIO_RESERVE(H8300_GPIO_P8, bitmask) == 0) + return -EBUSY; + H8300_GPIO_DDR(H8300_GPIO_P8, bitmask, H8300_GPIO_INPUT); + break; + case EXT_IRQ4: + case EXT_IRQ5: + if (H8300_GPIO_RESERVE(H8300_GPIO_P9, bitmask) == 0) + return -EBUSY; + H8300_GPIO_DDR(H8300_GPIO_P9, bitmask, H8300_GPIO_INPUT); + break; + } + + return 0; +} + +void h8300_disable_irq_pin(unsigned int irq) +{ + int bitmask; + if (irq < EXT_IRQ0 || irq > EXT_IRQ5) + return; + + /* disable interrupt & release IRQ pin */ + bitmask = 1 << (irq - EXT_IRQ0); + switch(irq) { + case EXT_IRQ0: + case EXT_IRQ1: + case EXT_IRQ2: + case EXT_IRQ3: + *(volatile unsigned char *)IER &= ~bitmask; + H8300_GPIO_FREE(H8300_GPIO_P8, bitmask); + break ; + case EXT_IRQ4: + case EXT_IRQ5: + *(volatile unsigned char *)IER &= ~bitmask; + H8300_GPIO_FREE(H8300_GPIO_P9, bitmask); + break; + } +} |