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Commit 74b22b6a authored by Maulik Shah's avatar Maulik Shah
Browse files

irqchip: pdc: Iterate for actual available pdc regs during hibernation 



Current implementation iterates through maximum possible registers
of PDC to save status during hibernation. However some targets have
limited PDC registers available.

Fix this by counting during init time.

Change-Id: I37b048e0edf12cc81efca2087f92c867acb4ed93
Signed-off-by: default avatarMaulik Shah <mkshah@codeaurora.org>
parent b7ecd5e3

drivers/irqchip/qcom/pdc.c

+14 −5
Original line number Diff line number Diff line
@@ -33,7 +33,8 @@ 
#include "trace/events/pdc.h"



#define MAX_IRQS 126

#define MAX_ENABLE_REGS ((MAX_IRQS/32) + 1)

#define IRQS_PER_REG 32

#define MAX_ENABLE_REGS ((MAX_IRQS/IRQS_PER_REG) + 1)

#define CLEAR_INTR(reg, intr) (reg & ~(1 << intr))

#define ENABLE_INTR(reg, intr) (reg | (1 << intr))
@@ -48,7 +49,7 @@ struct pdc_type_info { 
};

static struct pdc_type_info pdc_type_config[MAX_IRQS];

static u32 pdc_enabled[MAX_ENABLE_REGS];



static u32 max_enable_regs;

static DEFINE_SPINLOCK(pdc_lock);

static void __iomem *pdc_base;
@@ -292,7 +293,7 @@ static int pdc_suspend(void) 
{

	int i;



	for (i = 0; i < MAX_ENABLE_REGS; i++)

	for (i = 0; i < max_enable_regs; i++)

		pdc_enabled[i] = readl_relaxed(pdc_base + IRQ_ENABLE_BANK

						+ (i * sizeof(uint32_t)));
@@ -319,7 +320,7 @@ static void pdc_resume(void) 
		}

	}



	for (i = 0; i < MAX_ENABLE_REGS; i++)

	for (i = 0; i < max_enable_regs; i++)

		writel_relaxed(pdc_enabled[i], pdc_base + IRQ_ENABLE_BANK

					+ (i * sizeof(uint32_t)));

}
@@ -340,8 +341,9 @@ int qcom_pdc_init(struct device_node *node, 
		struct device_node *parent, void *data)

{

	struct irq_domain *parent_domain;

	int ret;

	int i, ret, pin_count = 0;

	struct irq_domain *pdc_domain;

	struct pdc_pin *pdc_data = (struct pdc_pin *) data;



	pdc_base = of_iomap(node, 0);

	if (!pdc_base) {
@@ -364,6 +366,13 @@ int qcom_pdc_init(struct device_node *node, 
		goto failure;

	}



	for (i = 0; pdc_data[i].pin >= 0; i++)

		pin_count++;



	max_enable_regs = pin_count / IRQS_PER_REG;

	if (pin_count % IRQS_PER_REG)

		max_enable_regs++;



	pdc_domain->name = "qcom,pdc";



	return 0;