This is a more proper isolation of the code. Done in preparation of making PRM an individual driver.
Signed-off-by: Tero Kristo <[email protected]> --- arch/arm/mach-omap2/pm34xx.c | 49 +---------------------------------------- arch/arm/mach-omap2/prm3xxx.c | 45 +++++++++++++++++++++++++++++++++++++ arch/arm/mach-omap2/prm3xxx.h | 1 + 3 files changed, 47 insertions(+), 48 deletions(-) diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 74d03f2..6d02573 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -353,53 +353,6 @@ restore: #define omap3_pm_suspend NULL #endif /* CONFIG_SUSPEND */ - -/** - * omap3_iva_idle(): ensure IVA is in idle so it can be put into - * retention - * - * In cases where IVA2 is activated by bootcode, it may prevent - * full-chip retention or off-mode because it is not idle. This - * function forces the IVA2 into idle state so it can go - * into retention/off and thus allow full-chip retention/off. - * - **/ -static void __init omap3_iva_idle(void) -{ - /* ensure IVA2 clock is disabled */ - omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); - - /* if no clock activity, nothing else to do */ - if (!(omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) & - OMAP3430_CLKACTIVITY_IVA2_MASK)) - return; - - /* Reset IVA2 */ - omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK | - OMAP3430_RST2_IVA2_MASK | - OMAP3430_RST3_IVA2_MASK, - OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); - - /* Enable IVA2 clock */ - omap2_cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK, - OMAP3430_IVA2_MOD, CM_FCLKEN); - - /* Set IVA2 boot mode to 'idle' */ - omap3_ctrl_set_iva_bootmode_idle(); - - /* Un-reset IVA2 */ - omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); - - /* Disable IVA2 clock */ - omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); - - /* Reset IVA2 */ - omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK | - OMAP3430_RST2_IVA2_MASK | - OMAP3430_RST3_IVA2_MASK, - OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); -} - static void __init omap3_d2d_idle(void) { u16 mask, padconf; @@ -503,7 +456,7 @@ static void __init prcm_setup_regs(void) /* * We need to idle iva2_pwrdm even on am3703 with no iva2. */ - omap3_iva_idle(); + omap3xxx_prm_iva_idle(); omap3_d2d_idle(); } diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c index 014ba70d..a575b69 100644 --- a/arch/arm/mach-omap2/prm3xxx.c +++ b/arch/arm/mach-omap2/prm3xxx.c @@ -28,6 +28,7 @@ #include "prm-regbits-34xx.h" #include "cm3xxx.h" #include "cm-regbits-34xx.h" +#include "control.h" static const struct omap_prcm_irq omap3_prcm_irqs[] = { OMAP_PRCM_IRQ("wkup", 0, 0), @@ -329,6 +330,50 @@ static u32 omap3xxx_prm_read_reset_sources(void) return r; } +/** + * omap3xxx_prm_iva_idle - ensure IVA is in idle so it can be put into retention + * + * In cases where IVA2 is activated by bootcode, it may prevent + * full-chip retention or off-mode because it is not idle. This + * function forces the IVA2 into idle state so it can go + * into retention/off and thus allow full-chip retention/off. + */ +void omap3xxx_prm_iva_idle(void) +{ + /* ensure IVA2 clock is disabled */ + omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); + + /* if no clock activity, nothing else to do */ + if (!(omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) & + OMAP3430_CLKACTIVITY_IVA2_MASK)) + return; + + /* Reset IVA2 */ + omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK | + OMAP3430_RST2_IVA2_MASK | + OMAP3430_RST3_IVA2_MASK, + OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); + + /* Enable IVA2 clock */ + omap2_cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK, + OMAP3430_IVA2_MOD, CM_FCLKEN); + + /* Set IVA2 boot mode to 'idle' */ + omap3_ctrl_set_iva_bootmode_idle(); + + /* Un-reset IVA2 */ + omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); + + /* Disable IVA2 clock */ + omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); + + /* Reset IVA2 */ + omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK | + OMAP3430_RST2_IVA2_MASK | + OMAP3430_RST3_IVA2_MASK, + OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); +} + /* Powerdomain low-level functions */ static int omap3_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst) diff --git a/arch/arm/mach-omap2/prm3xxx.h b/arch/arm/mach-omap2/prm3xxx.h index 14a5fbc..007ff59 100644 --- a/arch/arm/mach-omap2/prm3xxx.h +++ b/arch/arm/mach-omap2/prm3xxx.h @@ -163,6 +163,7 @@ extern void omap3xxx_prm_dpll3_reset(void); extern int __init omap3xxx_prm_init(void); extern u32 omap3xxx_prm_get_reset_sources(void); int omap3xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits); +void omap3xxx_prm_iva_idle(void); #endif /* __ASSEMBLER */ -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
