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Commit 83303512 authored by Ramprasad Katkam's avatar Ramprasad Katkam
Browse files

soc: swr-mstr: Change master interrupt to edge type 



Change master interrupt to edge type handling to avoid
recurring interrupts during ssr. Add loop logic to handle
concurrent edge type interrupts.

Change-Id: I3c789a24c035a6a00b1a2f515aa5328546ad80a9
Signed-off-by: default avatarRamprasad Katkam <katkam@codeaurora.org>
parent 1ab95845

soc/swr-mstr-ctrl.c

+20 −6
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ 


#define SWR_INVALID_PARAM 0xFF



#define SWRM_INTERRUPT_STATUS_MASK 0x1FDFD

/* pm runtime auto suspend timer in msecs */

static int auto_suspend_timer = SWR_AUTO_SUSPEND_DELAY * 1000;

module_param(auto_suspend_timer, int, 0664);
@@ -68,7 +69,7 @@ enum { 
#define FALSE 0



#define SWRM_MAX_PORT_REG    120

#define SWRM_MAX_INIT_REG    10

#define SWRM_MAX_INIT_REG    11



#define SWR_MSTR_MAX_REG_ADDR	0x1740

#define SWR_MSTR_START_REG_ADDR	0x00
@@ -1265,7 +1266,8 @@ static irqreturn_t swr_mstr_interrupt(int irq, void *dev) 
	mutex_unlock(&swrm->reslock);



	intr_sts = swr_master_read(swrm, SWRM_INTERRUPT_STATUS);

	intr_sts &= SWRM_INTERRUPT_STATUS_RMSK;

	intr_sts &= SWRM_INTERRUPT_STATUS_MASK;

handle_irq:

	for (i = 0; i < SWRM_INTERRUPT_MAX; i++) {

		value = intr_sts & (1 << i);

		if (!value)
@@ -1387,6 +1389,15 @@ static irqreturn_t swr_mstr_interrupt(int irq, void *dev) 
	}

	swr_master_write(swrm, SWRM_INTERRUPT_CLEAR, intr_sts);

	swr_master_write(swrm, SWRM_INTERRUPT_CLEAR, 0x0);



	intr_sts = swr_master_read(swrm, SWRM_INTERRUPT_STATUS);

	intr_sts &= SWRM_INTERRUPT_STATUS_MASK;



	if (intr_sts) {

		dev_dbg(swrm->dev, "%s: new interrupt received\n", __func__);

		goto handle_irq;

	}



	mutex_lock(&swrm->reslock);

	swrm_clk_request(swrm, false);

	mutex_unlock(&swrm->reslock);
@@ -1527,9 +1538,12 @@ static int swrm_master_init(struct swr_mstr_ctrl *swrm) 
	reg[len] = SWRM_MCP_BUS_CTRL_ADDR;

	value[len++] = 0x2;



	/* Set IRQ to LEVEL */

	/* Set IRQ to PULSE */

	reg[len] = SWRM_COMP_CFG_ADDR;

	value[len++] = 0x02;



	reg[len] = SWRM_COMP_CFG_ADDR;

	value[len++] = 0x01;

	value[len++] = 0x03;



	reg[len] = SWRM_INTERRUPT_CLEAR;

	value[len++] = 0xFFFFFFFF;
@@ -1539,7 +1553,7 @@ static int swrm_master_init(struct swr_mstr_ctrl *swrm) 
	value[len++] = 0x1FFFD;



	reg[len] = SWR_MSTR_RX_SWRM_CPU_INTERRUPT_EN;

	value[len++] = 0x1FDFD;

	value[len++] = SWRM_INTERRUPT_STATUS_MASK;



	swr_master_bulk_write(swrm, reg, value, len);
@@ -1788,7 +1802,7 @@ static int swrm_probe(struct platform_device *pdev) 


		ret = request_threaded_irq(swrm->irq, NULL,

					   swr_mstr_interrupt,

					   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,

					   IRQF_TRIGGER_RISING | IRQF_ONESHOT,

					   "swr_master_irq", swrm);

		if (ret) {

			dev_err(swrm->dev, "%s: Failed to request irq %d\n",