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ARM: shmobile: INTC External IRQ pin driver on sh73a0
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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>
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Magnus Damm authored and Simon Horman committed Mar 18, 2013
1 parent 1f4f11c commit 341eb54
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Showing 5 changed files with 137 additions and 127 deletions.
1 change: 1 addition & 0 deletions arch/arm/mach-shmobile/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ config ARCH_SH73A0
select CPU_V7
select I2C
select SH_CLK_CPG
select RENESAS_INTC_IRQPIN

config ARCH_R8A7740
bool "R-Mobile A1 (R8A77400)"
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14 changes: 7 additions & 7 deletions arch/arm/mach-shmobile/board-kzm9g.c
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ static struct resource smsc9221_resources[] = {
.flags = IORESOURCE_MEM,
},
[1] = {
.start = intcs_evt2irq(0x260), /* IRQ3 */
.start = irq_pin(3), /* IRQ3 */
.flags = IORESOURCE_IRQ,
},
};
Expand Down Expand Up @@ -115,7 +115,7 @@ static struct resource usb_resources[] = {
.flags = IORESOURCE_MEM,
},
[1] = {
.start = intcs_evt2irq(0x220), /* IRQ1 */
.start = irq_pin(1), /* IRQ1 */
.flags = IORESOURCE_IRQ,
},
};
Expand All @@ -138,7 +138,7 @@ struct usbhs_private {
struct renesas_usbhs_platform_info info;
};

#define IRQ15 intcs_evt2irq(0x03e0)
#define IRQ15 irq_pin(15)
#define USB_PHY_MODE (1 << 4)
#define USB_PHY_INT_EN ((1 << 3) | (1 << 2))
#define USB_PHY_ON (1 << 1)
Expand Down Expand Up @@ -563,25 +563,25 @@ static struct i2c_board_info i2c0_devices[] = {
},
{
I2C_BOARD_INFO("ak8975", 0x0c),
.irq = intcs_evt2irq(0x3380), /* IRQ28 */
.irq = irq_pin(28), /* IRQ28 */
},
{
I2C_BOARD_INFO("adxl34x", 0x1d),
.irq = intcs_evt2irq(0x3340), /* IRQ26 */
.irq = irq_pin(26), /* IRQ26 */
},
};

static struct i2c_board_info i2c1_devices[] = {
{
I2C_BOARD_INFO("st1232-ts", 0x55),
.irq = intcs_evt2irq(0x300), /* IRQ8 */
.irq = irq_pin(8), /* IRQ8 */
},
};

static struct i2c_board_info i2c3_devices[] = {
{
I2C_BOARD_INFO("pcf8575", 0x20),
.irq = intcs_evt2irq(0x3260), /* IRQ19 */
.irq = irq_pin(19), /* IRQ19 */
.platform_data = &pcf8575_pdata,
},
};
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117 changes: 0 additions & 117 deletions arch/arm/mach-shmobile/intc-sh73a0.c
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Original file line number Diff line number Diff line change
Expand Up @@ -260,108 +260,6 @@ static int sh73a0_set_wake(struct irq_data *data, unsigned int on)
return 0; /* always allow wakeup */
}

#define RELOC_BASE 0x1200

/* INTCA IRQ pins at INTCS + RELOC_BASE 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);
}

#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 = sh73a0_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];

#define PINTER0_PHYS 0xe69000a0
#define PINTER1_PHYS 0xe69000a4
#define PINTER0_VIRT IOMEM(0xe69000a0)
Expand Down Expand Up @@ -422,13 +320,11 @@ void __init sh73a0_init_irq(void)
void __iomem *gic_dist_base = IOMEM(0xf0001000);
void __iomem *gic_cpu_base = IOMEM(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);
register_intc_controller(&intc_pint0_desc);
register_intc_controller(&intc_pint1_desc);

Expand All @@ -438,19 +334,6 @@ void __init sh73a0_init_irq(void)
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)));
WARN_ON(irq_alloc_desc_at(n, numa_node_id()) != n);
irq_set_chip_and_handler_name(n, &intca_gic_irq_chip,
handle_level_irq, "level");
set_irq_flags(n, IRQF_VALID); /* yuck */
}

/* PINT pins are sanely tied to the GIC as SPI */
sh73a0_pint0_cascade.name = "PINT0 cascade";
sh73a0_pint0_cascade.handler = sh73a0_pint0_demux;
Expand Down
126 changes: 126 additions & 0 deletions arch/arm/mach-shmobile/setup-sh73a0.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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>
Expand Down Expand Up @@ -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,
Expand Down Expand Up @@ -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)
Expand Down
6 changes: 3 additions & 3 deletions drivers/pinctrl/sh-pfc/pfc-sh73a0.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2733,9 +2733,9 @@ static struct pinmux_data_reg pinmux_data_regs[] = {
{ },
};

/* 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))
/* External IRQ pins mapped at IRQPIN_BASE */
#define EXT_IRQ16L(n) irq_pin(n)
#define EXT_IRQ16H(n) irq_pin(n)

static struct pinmux_irq pinmux_irqs[] = {
PINMUX_IRQ(EXT_IRQ16H(19), PORT9_FN0),
Expand Down

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