diff options
Diffstat (limited to 'arch/sh/boards/mach-se/7724/irq.c')
-rw-r--r-- | arch/sh/boards/mach-se/7724/irq.c | 62 |
1 files changed, 39 insertions, 23 deletions
diff --git a/arch/sh/boards/mach-se/7724/irq.c b/arch/sh/boards/mach-se/7724/irq.c index f76cf3b..0942be2 100644 --- a/arch/sh/boards/mach-se/7724/irq.c +++ b/arch/sh/boards/mach-se/7724/irq.c @@ -72,14 +72,14 @@ static void disable_se7724_irq(unsigned int irq) { struct fpga_irq set = get_fpga_irq(fpga2irq(irq)); unsigned int bit = irq - set.base; - ctrl_outw(ctrl_inw(set.mraddr) | 0x0001 << bit, set.mraddr); + __raw_writew(__raw_readw(set.mraddr) | 0x0001 << bit, set.mraddr); } static void enable_se7724_irq(unsigned int irq) { struct fpga_irq set = get_fpga_irq(fpga2irq(irq)); unsigned int bit = irq - set.base; - ctrl_outw(ctrl_inw(set.mraddr) & ~(0x0001 << bit), set.mraddr); + __raw_writew(__raw_readw(set.mraddr) & ~(0x0001 << bit), set.mraddr); } static struct irq_chip se7724_irq_chip __read_mostly = { @@ -92,19 +92,16 @@ static struct irq_chip se7724_irq_chip __read_mostly = { static void se7724_irq_demux(unsigned int irq, struct irq_desc *desc) { struct fpga_irq set = get_fpga_irq(irq); - unsigned short intv = ctrl_inw(set.sraddr); - struct irq_desc *ext_desc; + unsigned short intv = __raw_readw(set.sraddr); unsigned int ext_irq = set.base; intv &= set.mask; - while (intv) { - if (intv & 0x0001) { - ext_desc = irq_desc + ext_irq; - handle_level_irq(ext_irq, ext_desc); - } - intv >>= 1; - ext_irq++; + for (; intv; intv >>= 1, ext_irq++) { + if (!(intv & 1)) + continue; + + generic_handle_irq(ext_irq); } } @@ -113,20 +110,39 @@ static void se7724_irq_demux(unsigned int irq, struct irq_desc *desc) */ void __init init_se7724_IRQ(void) { - int i; - - ctrl_outw(0xffff, IRQ0_MR); /* mask all */ - ctrl_outw(0xffff, IRQ1_MR); /* mask all */ - ctrl_outw(0xffff, IRQ2_MR); /* mask all */ - ctrl_outw(0x0000, IRQ0_SR); /* clear irq */ - ctrl_outw(0x0000, IRQ1_SR); /* clear irq */ - ctrl_outw(0x0000, IRQ2_SR); /* clear irq */ - ctrl_outw(0x002a, IRQ_MODE); /* set irq type */ - - for (i = 0; i < SE7724_FPGA_IRQ_NR; i++) - set_irq_chip_and_handler_name(SE7724_FPGA_IRQ_BASE + i, + int i, nid = cpu_to_node(boot_cpu_data); + + __raw_writew(0xffff, IRQ0_MR); /* mask all */ + __raw_writew(0xffff, IRQ1_MR); /* mask all */ + __raw_writew(0xffff, IRQ2_MR); /* mask all */ + __raw_writew(0x0000, IRQ0_SR); /* clear irq */ + __raw_writew(0x0000, IRQ1_SR); /* clear irq */ + __raw_writew(0x0000, IRQ2_SR); /* clear irq */ + __raw_writew(0x002a, IRQ_MODE); /* set irq type */ + + for (i = 0; i < SE7724_FPGA_IRQ_NR; i++) { + int irq, wanted; + + wanted = SE7724_FPGA_IRQ_BASE + i; + + irq = create_irq_nr(wanted, nid); + if (unlikely(irq == 0)) { + pr_err("%s: failed hooking irq %d for FPGA\n", + __func__, wanted); + return; + } + + if (unlikely(irq != wanted)) { + pr_err("%s: got irq %d but wanted %d, bailing.\n", + __func__, irq, wanted); + destroy_irq(irq); + return; + } + + set_irq_chip_and_handler_name(irq, &se7724_irq_chip, handle_level_irq, "level"); + } set_irq_chained_handler(IRQ0_IRQ, se7724_irq_demux); set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW); |