greybus: arche-platform: Add wake detect state based on functionality (685353c1) · Commits · 戴 / test

drivers/staging/greybus/arche-platform.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,15 @@

		#include <linux/usb/usb3613.h>

		enum svc_wakedetect_state {
		WD_STATE_IDLE, /* Default state = pulled high/low */
		WD_STATE_BOOT_INIT, /* WD = falling edge (low) */
		WD_STATE_COLDBOOT_TRIG, /* WD = rising edge (high), > 30msec */
		WD_STATE_STANDBYBOOT_TRIG, /* As of now not used ?? */
		WD_STATE_COLDBOOT_START, /* Cold boot process started */
		WD_STATE_STANDBYBOOT_START, /* Not used */
		};

		struct arche_platform_drvdata {
		/* Control GPIO signals to and from AP <=> SVC */
		int svc_reset_gpio;
		@@ -39,6 +48,8 @@ struct arche_platform_drvdata {
		int num_apbs;

		struct delayed_work delayed_work;
		enum svc_wakedetect_state wake_detect_state;

		struct device *dev;
		};

		@@ -145,6 +156,7 @@ static void arche_platform_poweroff_seq(struct arche_platform_drvdata *arche_pda
		/* Send disconnect/detach event to SVC */
		gpio_set_value(arche_pdata->wake_detect_gpio, 0);
		usleep_range(100, 200);
		arche_pdata->wake_detect_state = WD_STATE_IDLE;

		clk_disable_unprepare(arche_pdata->svc_ref_clk);
		}
		@@ -328,6 +340,7 @@ static int arche_platform_probe(struct platform_device *pdev)
		}
		/* deassert wake detect */
		gpio_direction_output(arche_pdata->wake_detect_gpio, 0);
		arche_pdata->wake_detect_state = WD_STATE_IDLE;

		arche_pdata->dev = &pdev->dev;