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ARM: OMAP3: control: add API for setting IVA bootmode

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OMAP3 PM core requires IVA2 bootmode to be set to idle during init. Currently,
a direct register write is used for this. Add a new ctrl API for this purpose
instead.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Tero Kristo 2013-10-11 19:15:38 +03:00 committed by Paul Walmsley
parent c6a2d839d0
commit 49e0340232
3 changed files with 13 additions and 2 deletions
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11
arch/arm/mach-omap2/control.c
View File

@ -569,4 +569,15 @@ int omap3_ctrl_save_padconf(void)
return 0;
}
/**
* omap3_ctrl_set_iva_bootmode_idle - sets the IVA2 bootmode to idle
*
* Sets the bootmode for IVA2 to idle. This is needed by the PM code to
* force disable IVA2 so that it does not prevent any low-power states.
*/
void omap3_ctrl_set_iva_bootmode_idle(void)
{
omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE,
OMAP343X_CONTROL_IVA2_BOOTMOD);
}
#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */

1
arch/arm/mach-omap2/control.h
View File

@ -427,6 +427,7 @@ extern void omap_ctrl_write_dsp_boot_addr(u32 bootaddr);
extern void omap_ctrl_write_dsp_boot_mode(u8 bootmode);
extern void omap3630_ctrl_disable_rta(void);
extern int omap3_ctrl_save_padconf(void);
extern void omap3_ctrl_set_iva_bootmode_idle(void);
extern void omap2_set_globals_control(void __iomem *ctrl,
void __iomem *ctrl_pad);
#else

3
arch/arm/mach-omap2/pm34xx.c
View File

@ -430,8 +430,7 @@ static void __init omap3_iva_idle(void)
OMAP3430_IVA2_MOD, CM_FCLKEN);
/* Set IVA2 boot mode to 'idle' */
omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE,
OMAP343X_CONTROL_IVA2_BOOTMOD);
omap3_ctrl_set_iva_bootmode_idle();
/* Un-reset IVA2 */
omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);