Commit 0b1283e3 authored by Vaibhav Hiremath's avatar Vaibhav Hiremath Committed by Greg Kroah-Hartman
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greybus: arche-platform: Enter ACTIVE state only from OFF state 



Make sure that, transition to active state happens only from OFF state.
Instead of imposing the restriction to user-space, driver internally
switches to OFF state and then to ACTIVE state.

Testing Done: Tested on EVT1.5 platform.

Signed-off-by: default avatarVaibhav Hiremath <vaibhav.hiremath@linaro.org>
Tested-by: default avatarMichael Scott <michael.scott@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent c61a8b49

drivers/staging/greybus/arche-platform.c

+7 −0
Original line number Diff line number Diff line
@@ -407,8 +407,15 @@ static ssize_t state_store(struct device *dev, 
		if (arche_pdata->state == ARCHE_PLATFORM_STATE_ACTIVE)

			goto exit;



		/* First we want to make sure we power off everything

		 * and then activate back again */

		device_for_each_child(arche_pdata->dev, NULL, apb_poweroff);

		arche_platform_poweroff_seq(arche_pdata);



		arche_platform_wd_irq_en(arche_pdata);

		ret = arche_platform_coldboot_seq(arche_pdata);

		if (ret)

			goto exit;



	} else if (sysfs_streq(buf, "standby")) {

		if (arche_pdata->state == ARCHE_PLATFORM_STATE_STANDBY)