diff options
author | Magnus Damm <damm@opensource.se> | 2011-10-12 16:21:42 +0900 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2011-11-05 01:02:51 +0900 |
commit | a1993055efcc14fd6d213b936d28a41ea52e1d3d (patch) | |
tree | 5284a00f273605d79cc9367594605a44ac1729ed /arch | |
parent | da5713ef03aba15761eeeade4f4938e5db98b1e2 (diff) | |
download | linux-a1993055efcc14fd6d213b936d28a41ea52e1d3d.tar.bz2 |
ARM: mach-shmobile: Use common INTC IRQ code on sh73a0
Improve IRQ triggering support by making use of the macro
INTC_IRQ_PINS_32() for INTCA on sh73a0. Unfortunately it
is not as easy as just using the macro as-is, we need to
do mask and unmaks in the GIC but configure other bits
and ack in INTCA. Update GPIO IRQ mappings while at it.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-shmobile/intc-sh73a0.c | 122 | ||||
-rw-r--r-- | arch/arm/mach-shmobile/pfc-sh73a0.c | 68 |
2 files changed, 157 insertions, 33 deletions
diff --git a/arch/arm/mach-shmobile/intc-sh73a0.c b/arch/arm/mach-shmobile/intc-sh73a0.c index a911a60e7719..836e81557986 100644 --- a/arch/arm/mach-shmobile/intc-sh73a0.c +++ b/arch/arm/mach-shmobile/intc-sh73a0.c @@ -22,6 +22,7 @@ #include <linux/irq.h> #include <linux/io.h> #include <linux/sh_intc.h> +#include <mach/intc.h> #include <asm/hardware/gic.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -255,20 +256,141 @@ static int sh73a0_set_wake(struct irq_data *data, unsigned int on) return 0; /* always allow wakeup */ } +#define RELOC_BASE 0x1000 + +/* INTCA IRQ pins at INTCS + 0x1000 to make space for GIC+INTC handling */ +#define INTCS_VECT_RELOC(n, vect) INTCS_VECT((n), (vect) + RELOC_BASE) + +INTC_IRQ_PINS_32(intca_irq_pins, 0xe6900000, + INTCS_VECT_RELOC, "sh73a0-intca-irq-pins"); + +static int to_gic_irq(struct irq_data *data) +{ + unsigned int vect = irq2evt(data->irq) - INTCS_VECT_BASE; + + if (vect >= 0x3200) + vect -= 0x3000; + else + vect -= 0x0200; + + return gic_spi((vect >> 5) + 1); +} + +static int to_intca_reloc_irq(struct irq_data *data) +{ + return data->irq + (RELOC_BASE >> 5); +} + +#define irq_cb(cb, irq) irq_get_chip(irq)->cb(irq_get_irq_data(irq)) +#define irq_cbp(cb, irq, p...) irq_get_chip(irq)->cb(irq_get_irq_data(irq), p) + +static void intca_gic_enable(struct irq_data *data) +{ + irq_cb(irq_unmask, to_intca_reloc_irq(data)); + irq_cb(irq_unmask, to_gic_irq(data)); +} + +static void intca_gic_disable(struct irq_data *data) +{ + irq_cb(irq_mask, to_gic_irq(data)); + irq_cb(irq_mask, to_intca_reloc_irq(data)); +} + +static void intca_gic_mask_ack(struct irq_data *data) +{ + irq_cb(irq_mask, to_gic_irq(data)); + irq_cb(irq_mask_ack, to_intca_reloc_irq(data)); +} + +static void intca_gic_eoi(struct irq_data *data) +{ + irq_cb(irq_eoi, to_gic_irq(data)); +} + +static int intca_gic_set_type(struct irq_data *data, unsigned int type) +{ + return irq_cbp(irq_set_type, to_intca_reloc_irq(data), type); +} + +static int intca_gic_set_wake(struct irq_data *data, unsigned int on) +{ + return irq_cbp(irq_set_wake, to_intca_reloc_irq(data), on); +} + +#ifdef CONFIG_SMP +static int intca_gic_set_affinity(struct irq_data *data, + const struct cpumask *cpumask, + bool force) +{ + return irq_cbp(irq_set_affinity, to_gic_irq(data), cpumask, force); +} +#endif + +struct irq_chip intca_gic_irq_chip = { + .name = "INTCA-GIC", + .irq_mask = intca_gic_disable, + .irq_unmask = intca_gic_enable, + .irq_mask_ack = intca_gic_mask_ack, + .irq_eoi = intca_gic_eoi, + .irq_enable = intca_gic_enable, + .irq_disable = intca_gic_disable, + .irq_shutdown = intca_gic_disable, + .irq_set_type = intca_gic_set_type, + .irq_set_wake = intca_gic_set_wake, +#ifdef CONFIG_SMP + .irq_set_affinity = intca_gic_set_affinity, +#endif +}; + +static int to_intc_vect(int irq) +{ + unsigned int irq_pin = irq - gic_spi(1); + unsigned int offs; + + if (irq_pin < 16) + offs = 0x0200; + else + offs = 0x3000; + + return offs + (irq_pin << 5); +} + +static irqreturn_t sh73a0_irq_pin_demux(int irq, void *dev_id) +{ + generic_handle_irq(intcs_evt2irq(to_intc_vect(irq))); + return IRQ_HANDLED; +} + +static struct irqaction sh73a0_irq_pin_cascade[32]; + void __init sh73a0_init_irq(void) { void __iomem *gic_dist_base = __io(0xf0001000); void __iomem *gic_cpu_base = __io(0xf0000100); void __iomem *intevtsa = ioremap_nocache(0xffd20100, PAGE_SIZE); + int k, n; gic_init(0, 29, gic_dist_base, gic_cpu_base); gic_arch_extn.irq_set_wake = sh73a0_set_wake; register_intc_controller(&intcs_desc); + register_intc_controller(&intca_irq_pins_desc); /* demux using INTEVTSA */ sh73a0_intcs_cascade.name = "INTCS cascade"; sh73a0_intcs_cascade.handler = sh73a0_intcs_demux; sh73a0_intcs_cascade.dev_id = intevtsa; setup_irq(gic_spi(50), &sh73a0_intcs_cascade); + + /* IRQ pins require special handling through INTCA and GIC */ + for (k = 0; k < 32; k++) { + sh73a0_irq_pin_cascade[k].name = "INTCA-GIC cascade"; + sh73a0_irq_pin_cascade[k].handler = sh73a0_irq_pin_demux; + setup_irq(gic_spi(1 + k), &sh73a0_irq_pin_cascade[k]); + + n = intcs_evt2irq(to_intc_vect(gic_spi(1 + k))); + irq_set_chip_and_handler_name(n, &intca_gic_irq_chip, + handle_level_irq, "level"); + set_irq_flags(n, IRQF_VALID); /* yuck */ + } } diff --git a/arch/arm/mach-shmobile/pfc-sh73a0.c b/arch/arm/mach-shmobile/pfc-sh73a0.c index 57322c9fd9b6..5abe02fbd6b9 100644 --- a/arch/arm/mach-shmobile/pfc-sh73a0.c +++ b/arch/arm/mach-shmobile/pfc-sh73a0.c @@ -2766,41 +2766,43 @@ static struct pinmux_data_reg pinmux_data_regs[] = { { }, }; -#define EXT_IRQ(n) gic_spi((n) + 1) /* GIC SPI starting from 1 for IRQ0 */ +/* IRQ pins through INTCS with IRQ0->15 from 0x200 and IRQ16-31 from 0x3200 */ +#define EXT_IRQ16L(n) intcs_evt2irq(0x200 + ((n) << 5)) +#define EXT_IRQ16H(n) intcs_evt2irq(0x3200 + ((n - 16) << 5)) static struct pinmux_irq pinmux_irqs[] = { - PINMUX_IRQ(EXT_IRQ(19), PORT9_FN0), - PINMUX_IRQ(EXT_IRQ(1), PORT10_FN0), - PINMUX_IRQ(EXT_IRQ(0), PORT11_FN0), - PINMUX_IRQ(EXT_IRQ(18), PORT13_FN0), - PINMUX_IRQ(EXT_IRQ(20), PORT14_FN0), - PINMUX_IRQ(EXT_IRQ(21), PORT15_FN0), - PINMUX_IRQ(EXT_IRQ(31), PORT26_FN0), - PINMUX_IRQ(EXT_IRQ(30), PORT27_FN0), - PINMUX_IRQ(EXT_IRQ(29), PORT28_FN0), - PINMUX_IRQ(EXT_IRQ(22), PORT40_FN0), - PINMUX_IRQ(EXT_IRQ(23), PORT53_FN0), - PINMUX_IRQ(EXT_IRQ(10), PORT54_FN0), - PINMUX_IRQ(EXT_IRQ(9), PORT56_FN0), - PINMUX_IRQ(EXT_IRQ(26), PORT115_FN0), - PINMUX_IRQ(EXT_IRQ(27), PORT116_FN0), - PINMUX_IRQ(EXT_IRQ(28), PORT117_FN0), - PINMUX_IRQ(EXT_IRQ(24), PORT118_FN0), - PINMUX_IRQ(EXT_IRQ(6), PORT147_FN0), - PINMUX_IRQ(EXT_IRQ(2), PORT149_FN0), - PINMUX_IRQ(EXT_IRQ(7), PORT150_FN0), - PINMUX_IRQ(EXT_IRQ(12), PORT156_FN0), - PINMUX_IRQ(EXT_IRQ(4), PORT159_FN0), - PINMUX_IRQ(EXT_IRQ(25), PORT164_FN0), - PINMUX_IRQ(EXT_IRQ(8), PORT223_FN0), - PINMUX_IRQ(EXT_IRQ(3), PORT224_FN0), - PINMUX_IRQ(EXT_IRQ(5), PORT227_FN0), - PINMUX_IRQ(EXT_IRQ(17), PORT234_FN0), - PINMUX_IRQ(EXT_IRQ(11), PORT238_FN0), - PINMUX_IRQ(EXT_IRQ(13), PORT239_FN0), - PINMUX_IRQ(EXT_IRQ(16), PORT249_FN0), - PINMUX_IRQ(EXT_IRQ(14), PORT251_FN0), - PINMUX_IRQ(EXT_IRQ(9), PORT308_FN0), + PINMUX_IRQ(EXT_IRQ16H(19), PORT9_FN0), + PINMUX_IRQ(EXT_IRQ16L(1), PORT10_FN0), + PINMUX_IRQ(EXT_IRQ16L(0), PORT11_FN0), + PINMUX_IRQ(EXT_IRQ16H(18), PORT13_FN0), + PINMUX_IRQ(EXT_IRQ16H(20), PORT14_FN0), + PINMUX_IRQ(EXT_IRQ16H(21), PORT15_FN0), + PINMUX_IRQ(EXT_IRQ16H(31), PORT26_FN0), + PINMUX_IRQ(EXT_IRQ16H(30), PORT27_FN0), + PINMUX_IRQ(EXT_IRQ16H(29), PORT28_FN0), + PINMUX_IRQ(EXT_IRQ16H(22), PORT40_FN0), + PINMUX_IRQ(EXT_IRQ16H(23), PORT53_FN0), + PINMUX_IRQ(EXT_IRQ16L(10), PORT54_FN0), + PINMUX_IRQ(EXT_IRQ16L(9), PORT56_FN0), + PINMUX_IRQ(EXT_IRQ16H(26), PORT115_FN0), + PINMUX_IRQ(EXT_IRQ16H(27), PORT116_FN0), + PINMUX_IRQ(EXT_IRQ16H(28), PORT117_FN0), + PINMUX_IRQ(EXT_IRQ16H(24), PORT118_FN0), + PINMUX_IRQ(EXT_IRQ16L(6), PORT147_FN0), + PINMUX_IRQ(EXT_IRQ16L(2), PORT149_FN0), + PINMUX_IRQ(EXT_IRQ16L(7), PORT150_FN0), + PINMUX_IRQ(EXT_IRQ16L(12), PORT156_FN0), + PINMUX_IRQ(EXT_IRQ16L(4), PORT159_FN0), + PINMUX_IRQ(EXT_IRQ16H(25), PORT164_FN0), + PINMUX_IRQ(EXT_IRQ16L(8), PORT223_FN0), + PINMUX_IRQ(EXT_IRQ16L(3), PORT224_FN0), + PINMUX_IRQ(EXT_IRQ16L(5), PORT227_FN0), + PINMUX_IRQ(EXT_IRQ16H(17), PORT234_FN0), + PINMUX_IRQ(EXT_IRQ16L(11), PORT238_FN0), + PINMUX_IRQ(EXT_IRQ16L(13), PORT239_FN0), + PINMUX_IRQ(EXT_IRQ16H(16), PORT249_FN0), + PINMUX_IRQ(EXT_IRQ16L(14), PORT251_FN0), + PINMUX_IRQ(EXT_IRQ16L(9), PORT308_FN0), }; static struct pinmux_info sh73a0_pinmux_info = { |