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Commit ec93b62f authored by Dave Gerlach's avatar Dave Gerlach Committed by Santosh Shilimkar
Browse files

soc: ti: wkup_m3_ipc: Add wkup_m3_request_wake_src 



Add wkup_m3_request_wake_src to allow users to get the name of
the wakeup source after a DeepSleep or Standby transition.

Signed-off-by: default avatarDave Gerlach <d-gerlach@ti.com>
Signed-off-by: default avatarKeerthy <j-keerthy@ti.com>
Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
parent 7a872b6f

drivers/soc/ti/wkup_m3_ipc.c

+39 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ 
#define M3_BASELINE_VERSION		0x191

#define M3_STATUS_RESP_MASK		(0xffff << 16)

#define M3_FW_VERSION_MASK		0xffff

#define M3_WAKE_SRC_MASK		0xff



#define M3_STATE_UNKNOWN		0

#define M3_STATE_RESET			1
@@ -55,6 +56,23 @@ 


static struct wkup_m3_ipc *m3_ipc_state;



static const struct wkup_m3_wakeup_src wakeups[] = {

	{.irq_nr = 35,	.src = "USB0_PHY"},

	{.irq_nr = 36,	.src = "USB1_PHY"},

	{.irq_nr = 40,	.src = "I2C0"},

	{.irq_nr = 41,	.src = "RTC Timer"},

	{.irq_nr = 42,	.src = "RTC Alarm"},

	{.irq_nr = 43,	.src = "Timer0"},

	{.irq_nr = 44,	.src = "Timer1"},

	{.irq_nr = 45,	.src = "UART"},

	{.irq_nr = 46,	.src = "GPIO0"},

	{.irq_nr = 48,	.src = "MPU_WAKE"},

	{.irq_nr = 49,	.src = "WDT0"},

	{.irq_nr = 50,	.src = "WDT1"},

	{.irq_nr = 51,	.src = "ADC_TSC"},

	{.irq_nr = 0,	.src = "Unknown"},

};



static void am33xx_txev_eoi(struct wkup_m3_ipc *m3_ipc)

{

	writel(AM33XX_M3_TXEV_ACK,
@@ -329,6 +347,26 @@ static int wkup_m3_finish_low_power(struct wkup_m3_ipc *m3_ipc) 
	return 0;

}



/**

 * wkup_m3_request_wake_src - Get the wakeup source info passed from wkup_m3

 * @m3_ipc: Pointer to wkup_m3_ipc context

 */

static const char *wkup_m3_request_wake_src(struct wkup_m3_ipc *m3_ipc)

{

	unsigned int wakeup_src_idx;

	int j, val;



	val = wkup_m3_ctrl_ipc_read(m3_ipc, 6);



	wakeup_src_idx = val & M3_WAKE_SRC_MASK;



	for (j = 0; j < ARRAY_SIZE(wakeups) - 1; j++) {

		if (wakeups[j].irq_nr == wakeup_src_idx)

			return wakeups[j].src;

	}

	return wakeups[j].src;

}



/**

 * wkup_m3_set_rtc_only - Set the rtc_only flag

 * @wkup_m3_wakeup: struct wkup_m3_wakeup_src * gets assigned the
@@ -346,6 +384,7 @@ static struct wkup_m3_ipc_ops ipc_ops = { 
	.prepare_low_power = wkup_m3_prepare_low_power,

	.finish_low_power = wkup_m3_finish_low_power,

	.request_pm_status = wkup_m3_request_pm_status,

	.request_wake_src = wkup_m3_request_wake_src,

	.set_rtc_only = wkup_m3_set_rtc_only,

};

include/linux/wkup_m3_ipc.h

+6 −0
Original line number Diff line number Diff line
@@ -43,12 +43,18 @@ struct wkup_m3_ipc { 
	int is_rtc_only;

};



struct wkup_m3_wakeup_src {

	int irq_nr;

	char src[10];

};



struct wkup_m3_ipc_ops {

	void (*set_mem_type)(struct wkup_m3_ipc *m3_ipc, int mem_type);

	void (*set_resume_address)(struct wkup_m3_ipc *m3_ipc, void *addr);

	int (*prepare_low_power)(struct wkup_m3_ipc *m3_ipc, int state);

	int (*finish_low_power)(struct wkup_m3_ipc *m3_ipc);

	int (*request_pm_status)(struct wkup_m3_ipc *m3_ipc);

	const char *(*request_wake_src)(struct wkup_m3_ipc *m3_ipc);

	void (*set_rtc_only)(struct wkup_m3_ipc *m3_ipc);

};