ARM: shmobile: INTC External IRQ pin driver on sh73a0

Adjust the sh73a0 IRQ code to make use of the
INTC External IRQ pin driver for external
interrupt pins IRQ0 -> IRQ31.

This removes quite a bit of special-case code
in intc-sh73a0.c but the number of lines get
replaced with platform device information in
setup-sh73a0.c. The PFC code is also adjusted
to make gpio_to_irq() return the correct
interrupt number.

At this point the DT reference implementations
are not covered. In the future such code shall
tie in the INTC External IRQ pin driver via
DT, so this kind of verbose code is not needed
for the long term DT case.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 126 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c
index 2257a915746d..638735f78e36 100644
--- a/arch/arm/mach-shmobile/setup-sh73a0.c
+++ b/arch/arm/mach-shmobile/setup-sh73a0.c
@@ -33,6 +33,7 @@
 #include <linux/sh_intc.h>
 #include <linux/sh_timer.h>
 #include <linux/platform_data/sh_ipmmu.h>
+#include <linux/platform_data/irq-renesas-intc-irqpin.h>
 #include <mach/dma-register.h>
 #include <mach/hardware.h>
 #include <mach/irqs.h>
@@ -811,6 +812,127 @@ static struct platform_device ipmmu_device = {
 	.num_resources  = ARRAY_SIZE(ipmmu_resources),
 };
 
+struct renesas_intc_irqpin_config irqpin0_platform_data = {
+	.irq_base = irq_pin(0), /* IRQ0 -> IRQ7 */
+};
+
+static struct resource irqpin0_resources[] = {
+	DEFINE_RES_MEM(0xe6900000, 4), /* ICR1A */
+	DEFINE_RES_MEM(0xe6900010, 4), /* INTPRI00A */
+	DEFINE_RES_MEM(0xe6900020, 1), /* INTREQ00A */
+	DEFINE_RES_MEM(0xe6900040, 1), /* INTMSK00A */
+	DEFINE_RES_MEM(0xe6900060, 1), /* INTMSKCLR00A */
+	DEFINE_RES_IRQ(gic_spi(1)), /* IRQ0 */
+	DEFINE_RES_IRQ(gic_spi(2)), /* IRQ1 */
+	DEFINE_RES_IRQ(gic_spi(3)), /* IRQ2 */
+	DEFINE_RES_IRQ(gic_spi(4)), /* IRQ3 */
+	DEFINE_RES_IRQ(gic_spi(5)), /* IRQ4 */
+	DEFINE_RES_IRQ(gic_spi(6)), /* IRQ5 */
+	DEFINE_RES_IRQ(gic_spi(7)), /* IRQ6 */
+	DEFINE_RES_IRQ(gic_spi(8)), /* IRQ7 */
+};
+
+static struct platform_device irqpin0_device = {
+	.name		= "renesas_intc_irqpin",
+	.id		= 0,
+	.resource	= irqpin0_resources,
+	.num_resources	= ARRAY_SIZE(irqpin0_resources),
+	.dev		= {
+		.platform_data	= &irqpin0_platform_data,
+	},
+};
+
+struct renesas_intc_irqpin_config irqpin1_platform_data = {
+	.irq_base = irq_pin(8), /* IRQ8 -> IRQ15 */
+	.control_parent = true, /* Disable spurious IRQ10 */
+};
+
+static struct resource irqpin1_resources[] = {
+	DEFINE_RES_MEM(0xe6900004, 4), /* ICR2A */
+	DEFINE_RES_MEM(0xe6900014, 4), /* INTPRI10A */
+	DEFINE_RES_MEM(0xe6900024, 1), /* INTREQ10A */
+	DEFINE_RES_MEM(0xe6900044, 1), /* INTMSK10A */
+	DEFINE_RES_MEM(0xe6900064, 1), /* INTMSKCLR10A */
+	DEFINE_RES_IRQ(gic_spi(9)), /* IRQ8 */
+	DEFINE_RES_IRQ(gic_spi(10)), /* IRQ9 */
+	DEFINE_RES_IRQ(gic_spi(11)), /* IRQ10 */
+	DEFINE_RES_IRQ(gic_spi(12)), /* IRQ11 */
+	DEFINE_RES_IRQ(gic_spi(13)), /* IRQ12 */
+	DEFINE_RES_IRQ(gic_spi(14)), /* IRQ13 */
+	DEFINE_RES_IRQ(gic_spi(15)), /* IRQ14 */
+	DEFINE_RES_IRQ(gic_spi(16)), /* IRQ15 */
+};
+
+static struct platform_device irqpin1_device = {
+	.name		= "renesas_intc_irqpin",
+	.id		= 1,
+	.resource	= irqpin1_resources,
+	.num_resources	= ARRAY_SIZE(irqpin1_resources),
+	.dev		= {
+		.platform_data	= &irqpin1_platform_data,
+	},
+};
+
+struct renesas_intc_irqpin_config irqpin2_platform_data = {
+	.irq_base = irq_pin(16), /* IRQ16 -> IRQ23 */
+};
+
+static struct resource irqpin2_resources[] = {
+	DEFINE_RES_MEM(0xe6900008, 4), /* ICR3A */
+	DEFINE_RES_MEM(0xe6900018, 4), /* INTPRI20A */
+	DEFINE_RES_MEM(0xe6900028, 1), /* INTREQ20A */
+	DEFINE_RES_MEM(0xe6900048, 1), /* INTMSK20A */
+	DEFINE_RES_MEM(0xe6900068, 1), /* INTMSKCLR20A */
+	DEFINE_RES_IRQ(gic_spi(17)), /* IRQ16 */
+	DEFINE_RES_IRQ(gic_spi(18)), /* IRQ17 */
+	DEFINE_RES_IRQ(gic_spi(19)), /* IRQ18 */
+	DEFINE_RES_IRQ(gic_spi(20)), /* IRQ19 */
+	DEFINE_RES_IRQ(gic_spi(21)), /* IRQ20 */
+	DEFINE_RES_IRQ(gic_spi(22)), /* IRQ21 */
+	DEFINE_RES_IRQ(gic_spi(23)), /* IRQ22 */
+	DEFINE_RES_IRQ(gic_spi(24)), /* IRQ23 */
+};
+
+static struct platform_device irqpin2_device = {
+	.name		= "renesas_intc_irqpin",
+	.id		= 2,
+	.resource	= irqpin2_resources,
+	.num_resources	= ARRAY_SIZE(irqpin2_resources),
+	.dev		= {
+		.platform_data	= &irqpin2_platform_data,
+	},
+};
+
+struct renesas_intc_irqpin_config irqpin3_platform_data = {
+	.irq_base = irq_pin(24), /* IRQ24 -> IRQ31 */
+};
+
+static struct resource irqpin3_resources[] = {
+	DEFINE_RES_MEM(0xe690000c, 4), /* ICR4A */
+	DEFINE_RES_MEM(0xe690001c, 4), /* INTPRI30A */
+	DEFINE_RES_MEM(0xe690002c, 1), /* INTREQ30A */
+	DEFINE_RES_MEM(0xe690004c, 1), /* INTMSK30A */
+	DEFINE_RES_MEM(0xe690006c, 1), /* INTMSKCLR30A */
+	DEFINE_RES_IRQ(gic_spi(25)), /* IRQ24 */
+	DEFINE_RES_IRQ(gic_spi(26)), /* IRQ25 */
+	DEFINE_RES_IRQ(gic_spi(27)), /* IRQ26 */
+	DEFINE_RES_IRQ(gic_spi(28)), /* IRQ27 */
+	DEFINE_RES_IRQ(gic_spi(29)), /* IRQ28 */
+	DEFINE_RES_IRQ(gic_spi(30)), /* IRQ29 */
+	DEFINE_RES_IRQ(gic_spi(31)), /* IRQ30 */
+	DEFINE_RES_IRQ(gic_spi(32)), /* IRQ31 */
+};
+
+static struct platform_device irqpin3_device = {
+	.name		= "renesas_intc_irqpin",
+	.id		= 3,
+	.resource	= irqpin3_resources,
+	.num_resources	= ARRAY_SIZE(irqpin3_resources),
+	.dev		= {
+		.platform_data	= &irqpin3_platform_data,
+	},
+};
+
 static struct platform_device *sh73a0_devices_dt[] __initdata = {
 	&scif0_device,
 	&scif1_device,
@@ -839,6 +961,10 @@ static struct platform_device *sh73a0_late_devices[] __initdata = {
 	&dma0_device,
 	&mpdma0_device,
 	&pmu_device,
+	&irqpin0_device,
+	&irqpin1_device,
+	&irqpin2_device,
+	&irqpin3_device,
 };
 
 #define SRCR2          IOMEM(0xe61580b0)