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OMAP3: PM: idle: Remove fclk check for idle loop

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This patch removes the check to see if some functional clocks are
still enabled before entering sleep.  This is no longer needed when
using safe state (C1) that keeps CORE active.

Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Peter 'p2' De Schrijver 2009-03-10 18:05:19 +02:00 committed by Kevin Hilman
parent 7139178e9b
commit da869621c3
1 changed files with 0 additions and 42 deletions
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42
arch/arm/mach-omap2/pm34xx.c
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@ -461,54 +461,12 @@ void omap_sram_idle(void)
omap2_clkdm_allow_idle(mpu_pwrdm->pwrdm_clkdms[0]);
}
/*
* Check if functional clocks are enabled before entering
* sleep. This function could be behind CONFIG_PM_DEBUG
* when all drivers are configuring their sysconfig registers
* properly and using their clocks properly.
*/
static int omap3_fclks_active(void)
{
u32 fck_core1 = 0, fck_core3 = 0, fck_sgx = 0, fck_dss = 0,
fck_cam = 0, fck_per = 0, fck_usbhost = 0;
fck_core1 = cm_read_mod_reg(CORE_MOD,
CM_FCLKEN1);
if (omap_rev() > OMAP3430_REV_ES1_0) {
fck_core3 = cm_read_mod_reg(CORE_MOD,
OMAP3430ES2_CM_FCLKEN3);
fck_sgx = cm_read_mod_reg(OMAP3430ES2_SGX_MOD,
CM_FCLKEN);
fck_usbhost = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
CM_FCLKEN);
} else
fck_sgx = cm_read_mod_reg(GFX_MOD,
OMAP3430ES2_CM_FCLKEN3);
fck_dss = cm_read_mod_reg(OMAP3430_DSS_MOD,
CM_FCLKEN);
fck_cam = cm_read_mod_reg(OMAP3430_CAM_MOD,
CM_FCLKEN);
fck_per = cm_read_mod_reg(OMAP3430_PER_MOD,
CM_FCLKEN);
/* Ignore UART clocks. These are handled by UART core (serial.c) */
fck_core1 &= ~(OMAP3430_EN_UART1 | OMAP3430_EN_UART2);
fck_per &= ~OMAP3430_EN_UART3;
if (fck_core1 | fck_core3 | fck_sgx | fck_dss |
fck_cam | fck_per | fck_usbhost)
return 1;
return 0;
}
int omap3_can_sleep(void)
{
if (!sleep_while_idle)
return 0;
if (!omap_uart_can_sleep())
return 0;
if (omap3_fclks_active())
return 0;
return 1;
}