[PATCH 06/25] irqchip/armada-370-xp: Change register constants prefix to MPIC_

["Marek Behún" <kabel@kernel.org>]

Change the long ARMADA_370_XP_ prefix in register constants (ARMADA_375_
in one case) to MPIC_. The rationale is that it is shorter and more
generic (this controller is called MPIC and is also used on Armada 38x
and 39x).

Signed-off-by: Marek Behún <kabel@kernel.org>
---
 drivers/irqchip/irq-armada-370-xp.c | 148 +++++++++++++---------------
 1 file changed, 69 insertions(+), 79 deletions(-)

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 14d213e9b0d2..8f52de6d8921 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -66,18 +66,17 @@
  *                   device
  *
  * The "global interrupt mask/unmask" is modified using the
- * ARMADA_370_XP_INT_SET_ENABLE and ARMADA_370_XP_INT_CLEAR_ENABLE
+ * MPIC_INT_SET_ENABLE and MPIC_INT_CLEAR_ENABLE
  * registers, which are relative to "main_int_base".
  *
- * The "per-CPU mask/unmask" is modified using the
- * ARMADA_370_XP_INT_SET_MASK and ARMADA_370_XP_INT_CLEAR_MASK
- * registers, which are relative to "per_cpu_int_base". This base
- * address points to a special address, which automatically accesses
- * the registers of the current CPU.
+ * The "per-CPU mask/unmask" is modified using the MPIC_INT_SET_MASK
+ * and MPIC_INT_CLEAR_MASK registers, which are relative to
+ * "per_cpu_int_base". This base address points to a special address,
+ * which automatically accesses the registers of the current CPU.
  *
  * The per-CPU mask/unmask can also be adjusted using the global
- * per-interrupt ARMADA_370_XP_INT_SOURCE_CTL register, which we use
- * to configure interrupt affinity.
+ * per-interrupt MPIC_INT_SOURCE_CTL register, which we use to
+ * configure interrupt affinity.
  *
  * Due to this model, all interrupts need to be mask/unmasked at two
  * different levels: at the global level and at the per-CPU level.
@@ -91,9 +90,8 @@
  *    the current CPU, running the ->map() code. This allows to have
  *    the interrupt unmasked at this level in non-SMP
  *    configurations. In SMP configurations, the ->set_affinity()
- *    callback is called, which using the
- *    ARMADA_370_XP_INT_SOURCE_CTL() readjusts the per-CPU mask/unmask
- *    for the interrupt.
+ *    callback is called, which using the MPIC_INT_SOURCE_CTL()
+ *    readjusts the per-CPU mask/unmask for the interrupt.
  *
  *    The ->mask() and ->unmask() operations only mask/unmask the
  *    interrupt at the "global" level.
@@ -116,25 +114,25 @@
  */
 
 /* Registers relative to main_int_base */
-#define ARMADA_370_XP_INT_CONTROL		0x00
-#define ARMADA_370_XP_SW_TRIG_INT		0x04
-#define ARMADA_370_XP_INT_SET_ENABLE		0x30
-#define ARMADA_370_XP_INT_CLEAR_ENABLE		0x34
-#define ARMADA_370_XP_INT_SOURCE_CTL(irq)	(0x100 + (irq) * 4)
-#define ARMADA_370_XP_INT_SOURCE_CPU_MASK	GENMASK(3, 0)
-#define ARMADA_370_XP_INT_IRQ_FIQ_MASK(cpuid)	((BIT(0) | BIT(8)) << (cpuid))
+#define MPIC_INT_CONTROL			0x00
+#define MPIC_SW_TRIG_INT			0x04
+#define MPIC_INT_SET_ENABLE			0x30
+#define MPIC_INT_CLEAR_ENABLE			0x34
+#define MPIC_INT_SOURCE_CTL(irq)		(0x100 + (irq) * 4)
+#define MPIC_INT_SOURCE_CPU_MASK		GENMASK(3, 0)
+#define MPIC_INT_IRQ_FIQ_MASK(cpuid)		((BIT(0) | BIT(8)) << (cpuid))
 
 /* Registers relative to per_cpu_int_base */
-#define ARMADA_370_XP_IN_DRBEL_CAUSE		0x08
-#define ARMADA_370_XP_IN_DRBEL_MASK		0x0c
-#define ARMADA_375_PPI_CAUSE			0x10
-#define ARMADA_370_XP_CPU_INTACK		0x44
-#define ARMADA_370_XP_INT_SET_MASK		0x48
-#define ARMADA_370_XP_INT_CLEAR_MASK		0x4C
-#define ARMADA_370_XP_INT_FABRIC_MASK		0x54
-#define ARMADA_370_XP_INT_CAUSE_PERF(cpu)	BIT(cpu)
+#define MPIC_IN_DRBEL_CAUSE			0x08
+#define MPIC_IN_DRBEL_MASK			0x0c
+#define MPIC_PPI_CAUSE				0x10
+#define MPIC_CPU_INTACK				0x44
+#define MPIC_INT_SET_MASK			0x48
+#define MPIC_INT_CLEAR_MASK			0x4C
+#define MPIC_INT_FABRIC_MASK			0x54
+#define MPIC_INT_CAUSE_PERF(cpu)		BIT(cpu)
 
-#define ARMADA_370_XP_MAX_PER_CPU_IRQS		28
+#define MPIC_MAX_PER_CPU_IRQS			28
 
 /* IPI and MSI interrupt definitions for IPI platforms */
 #define IPI_DOORBELL_START			0
@@ -203,7 +201,7 @@ static inline unsigned int msi_doorbell_end(void)
 
 static inline bool is_percpu_irq(irq_hw_number_t irq)
 {
-	if (irq <= ARMADA_370_XP_MAX_PER_CPU_IRQS)
+	if (irq <= MPIC_MAX_PER_CPU_IRQS)
 		return true;
 
 	return false;
@@ -219,9 +217,9 @@ static void armada_370_xp_irq_mask(struct irq_data *d)
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 
 	if (!is_percpu_irq(hwirq))
-		writel(hwirq, main_int_base + ARMADA_370_XP_INT_CLEAR_ENABLE);
+		writel(hwirq, main_int_base + MPIC_INT_CLEAR_ENABLE);
 	else
-		writel(hwirq, per_cpu_int_base + ARMADA_370_XP_INT_SET_MASK);
+		writel(hwirq, per_cpu_int_base + MPIC_INT_SET_MASK);
 }
 
 static void armada_370_xp_irq_unmask(struct irq_data *d)
@@ -229,9 +227,9 @@ static void armada_370_xp_irq_unmask(struct irq_data *d)
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 
 	if (!is_percpu_irq(hwirq))
-		writel(hwirq, main_int_base + ARMADA_370_XP_INT_SET_ENABLE);
+		writel(hwirq, main_int_base + MPIC_INT_SET_ENABLE);
 	else
-		writel(hwirq, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK);
+		writel(hwirq, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 }
 
 #ifdef CONFIG_PCI_MSI
@@ -324,18 +322,18 @@ static void armada_370_xp_msi_reenable_percpu(void)
 	u32 reg;
 
 	/* Enable MSI doorbell mask and combined cpu local interrupt */
-	reg = readl(per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	reg = readl(per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 	reg |= msi_doorbell_mask();
-	writel(reg, per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	writel(reg, per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 
 	/* Unmask local doorbell interrupt */
-	writel(1, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK);
+	writel(1, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 }
 
 static int armada_370_xp_msi_init(struct device_node *node,
 				  phys_addr_t main_int_phys_base)
 {
-	msi_doorbell_addr = main_int_phys_base + ARMADA_370_XP_SW_TRIG_INT;
+	msi_doorbell_addr = main_int_phys_base + MPIC_SW_TRIG_INT;
 
 	armada_370_xp_msi_inner_domain =
 		irq_domain_add_linear(NULL, msi_doorbell_size(),
@@ -356,7 +354,7 @@ static int armada_370_xp_msi_init(struct device_node *node,
 
 	/* Unmask low 16 MSI irqs on non-IPI platforms */
 	if (!is_ipi_available())
-		writel(0, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK);
+		writel(0, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 
 	return 0;
 }
@@ -384,8 +382,8 @@ static void armada_xp_mpic_perf_init(void)
 	cpuid = cpu_logical_map(smp_processor_id());
 
 	/* Enable Performance Counter Overflow interrupts */
-	writel(ARMADA_370_XP_INT_CAUSE_PERF(cpuid),
-	       per_cpu_int_base + ARMADA_370_XP_INT_FABRIC_MASK);
+	writel(MPIC_INT_CAUSE_PERF(cpuid),
+	       per_cpu_int_base + MPIC_INT_FABRIC_MASK);
 }
 
 #ifdef CONFIG_SMP
@@ -394,17 +392,17 @@ static struct irq_domain *ipi_domain;
 static void armada_370_xp_ipi_mask(struct irq_data *d)
 {
 	u32 reg;
-	reg = readl(per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	reg = readl(per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 	reg &= ~BIT(d->hwirq);
-	writel(reg, per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	writel(reg, per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 }
 
 static void armada_370_xp_ipi_unmask(struct irq_data *d)
 {
 	u32 reg;
-	reg = readl(per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	reg = readl(per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 	reg |= BIT(d->hwirq);
-	writel(reg, per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	writel(reg, per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 }
 
 static void armada_370_xp_ipi_send_mask(struct irq_data *d,
@@ -424,13 +422,12 @@ static void armada_370_xp_ipi_send_mask(struct irq_data *d,
 	dsb();
 
 	/* submit softirq */
-	writel((map << 8) | d->hwirq, main_int_base +
-		ARMADA_370_XP_SW_TRIG_INT);
+	writel((map << 8) | d->hwirq, main_int_base + MPIC_SW_TRIG_INT);
 }
 
 static void armada_370_xp_ipi_ack(struct irq_data *d)
 {
-	writel(~BIT(d->hwirq), per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_CAUSE);
+	writel(~BIT(d->hwirq), per_cpu_int_base + MPIC_IN_DRBEL_CAUSE);
 }
 
 static struct irq_chip ipi_irqchip = {
@@ -515,9 +512,8 @@ static int armada_xp_set_affinity(struct irq_data *d,
 	/* Select a single core from the affinity mask which is online */
 	cpu = cpumask_any_and(mask_val, cpu_online_mask);
 
-	atomic_io_modify(main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq),
-			 ARMADA_370_XP_INT_SOURCE_CPU_MASK,
-			 BIT(cpu_logical_map(cpu)));
+	atomic_io_modify(main_int_base + MPIC_INT_SOURCE_CTL(hwirq),
+			 MPIC_INT_SOURCE_CPU_MASK, BIT(cpu_logical_map(cpu)));
 
 	irq_data_update_effective_affinity(d, cpumask_of(cpu));
 
@@ -529,23 +525,23 @@ static void armada_xp_mpic_smp_cpu_init(void)
 	u32 control;
 	int nr_irqs, i;
 
-	control = readl(main_int_base + ARMADA_370_XP_INT_CONTROL);
+	control = readl(main_int_base + MPIC_INT_CONTROL);
 	nr_irqs = (control >> 2) & 0x3ff;
 
 	for (i = 0; i < nr_irqs; i++)
-		writel(i, per_cpu_int_base + ARMADA_370_XP_INT_SET_MASK);
+		writel(i, per_cpu_int_base + MPIC_INT_SET_MASK);
 
 	if (!is_ipi_available())
 		return;
 
 	/* Disable all IPIs */
-	writel(0, per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	writel(0, per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 
 	/* Clear pending IPIs */
-	writel(0, per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_CAUSE);
+	writel(0, per_cpu_int_base + MPIC_IN_DRBEL_CAUSE);
 
 	/* Unmask IPI interrupt */
-	writel(0, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK);
+	writel(0, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 }
 
 static void armada_xp_mpic_reenable_percpu(void)
@@ -553,7 +549,7 @@ static void armada_xp_mpic_reenable_percpu(void)
 	unsigned int irq;
 
 	/* Re-enable per-CPU interrupts that were enabled before suspend */
-	for (irq = 0; irq < ARMADA_370_XP_MAX_PER_CPU_IRQS; irq++) {
+	for (irq = 0; irq < MPIC_MAX_PER_CPU_IRQS; irq++) {
 		struct irq_data *data;
 		int virq;
 
@@ -615,10 +611,9 @@ static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
 
 	armada_370_xp_irq_mask(irq_get_irq_data(virq));
 	if (!is_percpu_irq(hw))
-		writel(hw, per_cpu_int_base +
-			ARMADA_370_XP_INT_CLEAR_MASK);
+		writel(hw, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 	else
-		writel(hw, main_int_base + ARMADA_370_XP_INT_SET_ENABLE);
+		writel(hw, main_int_base + MPIC_INT_SET_ENABLE);
 	irq_set_status_flags(virq, IRQ_LEVEL);
 
 	if (is_percpu_irq(hw)) {
@@ -645,10 +640,10 @@ static void armada_370_xp_handle_msi_irq(struct pt_regs *regs, bool is_chained)
 {
 	u32 msimask, msinr;
 
-	msimask = readl_relaxed(per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_CAUSE);
+	msimask = readl_relaxed(per_cpu_int_base + MPIC_IN_DRBEL_CAUSE);
 	msimask &= msi_doorbell_mask();
 
-	writel(~msimask, per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_CAUSE);
+	writel(~msimask, per_cpu_int_base + MPIC_IN_DRBEL_CAUSE);
 
 	for (msinr = msi_doorbell_start();
 	     msinr < msi_doorbell_end(); msinr++) {
@@ -673,17 +668,16 @@ static void armada_370_xp_mpic_handle_cascade_irq(struct irq_desc *desc)
 
 	chained_irq_enter(chip, desc);
 
-	irqmap = readl_relaxed(per_cpu_int_base + ARMADA_375_PPI_CAUSE);
+	irqmap = readl_relaxed(per_cpu_int_base + MPIC_PPI_CAUSE);
 	cpuid = cpu_logical_map(smp_processor_id());
 
 	for_each_set_bit(irqn, &irqmap, BITS_PER_LONG) {
-		irqsrc = readl_relaxed(main_int_base +
-				       ARMADA_370_XP_INT_SOURCE_CTL(irqn));
+		irqsrc = readl_relaxed(main_int_base + MPIC_INT_SOURCE_CTL(irqn));
 
 		/* Check if the interrupt is not masked on current CPU.
 		 * Test IRQ (0-1) and FIQ (8-9) mask bits.
 		 */
-		if (!(irqsrc & ARMADA_370_XP_INT_IRQ_FIQ_MASK(cpuid)))
+		if (!(irqsrc & MPIC_INT_IRQ_FIQ_MASK(cpuid)))
 			continue;
 
 		if (irqn == 0 || irqn == 1) {
@@ -703,8 +697,7 @@ armada_370_xp_handle_irq(struct pt_regs *regs)
 	u32 irqstat, irqnr;
 
 	do {
-		irqstat = readl_relaxed(per_cpu_int_base +
-					ARMADA_370_XP_CPU_INTACK);
+		irqstat = readl_relaxed(per_cpu_int_base + MPIC_CPU_INTACK);
 		irqnr = irqstat & 0x3FF;
 
 		if (irqnr > 1022)
@@ -727,7 +720,7 @@ armada_370_xp_handle_irq(struct pt_regs *regs)
 			int ipi;
 
 			ipimask = readl_relaxed(per_cpu_int_base +
-						ARMADA_370_XP_IN_DRBEL_CAUSE)
+						MPIC_IN_DRBEL_CAUSE)
 				& IPI_DOORBELL_MASK;
 
 			for_each_set_bit(ipi, &ipimask, IPI_DOORBELL_END)
@@ -740,7 +733,7 @@ armada_370_xp_handle_irq(struct pt_regs *regs)
 
 static int armada_370_xp_mpic_suspend(void)
 {
-	doorbell_mask_reg = readl(per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	doorbell_mask_reg = readl(per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 	return 0;
 }
 
@@ -751,7 +744,7 @@ static void armada_370_xp_mpic_resume(void)
 	irq_hw_number_t irq;
 
 	/* Re-enable interrupts */
-	nirqs = (readl(main_int_base + ARMADA_370_XP_INT_CONTROL) >> 2) & 0x3ff;
+	nirqs = (readl(main_int_base + MPIC_INT_CONTROL) >> 2) & 0x3ff;
 	for (irq = 0; irq < nirqs; irq++) {
 		struct irq_data *data;
 		int virq;
@@ -764,14 +757,12 @@ static void armada_370_xp_mpic_resume(void)
 
 		if (!is_percpu_irq(irq)) {
 			/* Non per-CPU interrupts */
-			writel(irq, per_cpu_int_base +
-			       ARMADA_370_XP_INT_CLEAR_MASK);
+			writel(irq, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 			if (!irqd_irq_disabled(data))
 				armada_370_xp_irq_unmask(data);
 		} else {
 			/* Per-CPU interrupts */
-			writel(irq, main_int_base +
-			       ARMADA_370_XP_INT_SET_ENABLE);
+			writel(irq, main_int_base + MPIC_INT_SET_ENABLE);
 
 			/*
 			 * Re-enable on the current CPU,
@@ -784,8 +775,7 @@ static void armada_370_xp_mpic_resume(void)
 	}
 
 	/* Reconfigure doorbells for IPIs and MSIs */
-	writel(doorbell_mask_reg,
-	       per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MASK);
+	writel(doorbell_mask_reg, per_cpu_int_base + MPIC_IN_DRBEL_MASK);
 
 	if (is_ipi_available()) {
 		src0 = doorbell_mask_reg & IPI_DOORBELL_MASK;
@@ -796,9 +786,9 @@ static void armada_370_xp_mpic_resume(void)
 	}
 
 	if (src0)
-		writel(0, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK);
+		writel(0, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 	if (src1)
-		writel(1, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK);
+		writel(1, per_cpu_int_base + MPIC_INT_CLEAR_MASK);
 
 	if (is_ipi_available())
 		ipi_resume();
@@ -834,11 +824,11 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
 				   resource_size(&per_cpu_int_res));
 	BUG_ON(!per_cpu_int_base);
 
-	control = readl(main_int_base + ARMADA_370_XP_INT_CONTROL);
+	control = readl(main_int_base + MPIC_INT_CONTROL);
 	nr_irqs = (control >> 2) & 0x3ff;
 
 	for (i = 0; i < nr_irqs; i++)
-		writel(i, main_int_base + ARMADA_370_XP_INT_CLEAR_ENABLE);
+		writel(i, main_int_base + MPIC_INT_CLEAR_ENABLE);
 
 	armada_370_xp_mpic_domain =
 		irq_domain_add_linear(node, nr_irqs,
-- 
2.44.2