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Commit ecf157d0 authored by Tero Kristo's avatar Tero Kristo Committed by Kevin Hilman
Browse files

OMAP3: PM: Prevent PER from going OFF when CORE is going INA 



OMAP3 can't generate wakeups in this state, thus it is not permitted.

Signed-off-by: default avatarTero Kristo <tero.kristo@nokia.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent 658ce97e

arch/arm/mach-omap2/pm34xx.c

+14 −5
Original line number Diff line number Diff line
@@ -308,6 +308,7 @@ static void omap_sram_idle(void) 
	int core_next_state = PWRDM_POWER_ON;

	int core_prev_state, per_prev_state;

	u32 sdrc_pwr = 0;

	int per_state_modified = 0;



	if (!_omap_sram_idle)

		return;
@@ -340,15 +341,21 @@ static void omap_sram_idle(void) 


	/* PER */

	per_next_state = pwrdm_read_next_pwrst(per_pwrdm);

	core_next_state = pwrdm_read_next_pwrst(core_pwrdm);

	if (per_next_state < PWRDM_POWER_ON) {

		omap2_gpio_prepare_for_retention();

		omap_uart_prepare_idle(2);

		if (per_next_state == PWRDM_POWER_OFF)

		omap2_gpio_prepare_for_retention();

		if (per_next_state == PWRDM_POWER_OFF) {

			if (core_next_state == PWRDM_POWER_ON) {

				per_next_state = PWRDM_POWER_RET;

				pwrdm_set_next_pwrst(per_pwrdm, per_next_state);

				per_state_modified = 1;

			} else

				omap3_per_save_context();

		}

	}



	/* CORE */

	core_next_state = pwrdm_read_next_pwrst(core_pwrdm);

	if (core_next_state < PWRDM_POWER_ON) {

		omap_uart_prepare_idle(0);

		omap_uart_prepare_idle(1);
@@ -413,10 +420,12 @@ static void omap_sram_idle(void) 
	/* PER */

	if (per_next_state < PWRDM_POWER_ON) {

		per_prev_state = pwrdm_read_prev_pwrst(per_pwrdm);

		omap_uart_resume_idle(2);

		if (per_prev_state == PWRDM_POWER_OFF)

			omap3_per_restore_context();

		omap2_gpio_resume_after_retention();

		omap_uart_resume_idle(2);

		if (per_state_modified)

			pwrdm_set_next_pwrst(per_pwrdm, PWRDM_POWER_OFF);

	}



	/* Disable IO-PAD wakeup */