From 2092e5ccf89db09ebde94e9aabd3c86d5fa05c6c Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Tue, 14 Dec 2010 12:42:35 -0700 Subject: OMAP2+: hwmod: add postsetup state MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Allow board files and OMAP core code to control the state that some or all of the hwmods end up in at the end of _setup() (called by omap_hwmod_late_init() ). Reimplement the old skip_setup_idle code in terms of this new postsetup state code. There are two use-cases for this patch: the !CONFIG_PM_RUNTIME case, in which all IP blocks should stay enabled after _setup() finishes; and the MPU watchdog case, in which the watchdog IP block should enter idle if watchdog coverage of kernel initialization is desired, and should be disabled otherwise. Signed-off-by: Paul Walmsley Cc: Benoît Cousson Cc: Kevin Hilman Cc: Charulatha Varadarajan --- arch/arm/mach-omap2/io.c | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-) (limited to 'arch/arm/mach-omap2/io.c') diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 77bf0d1baeef..7362b69a154d 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -312,6 +312,11 @@ static int __init _omap2_init_reprogram_sdrc(void) return v; } +static int _set_hwmod_postsetup_state(struct omap_hwmod *oh, void *data) +{ + return omap_hwmod_set_postsetup_state(oh, *(u8 *)data); +} + /* * Initialize asm_irq_base for entry-macro.S */ @@ -333,6 +338,8 @@ static inline void omap_irq_base_init(void) void __init omap2_init_common_infrastructure(void) { + u8 postsetup_state; + pwrdm_init(powerdomains_omap); clkdm_init(clockdomains_omap, clkdm_autodeps); if (cpu_is_omap242x()) @@ -343,6 +350,16 @@ void __init omap2_init_common_infrastructure(void) omap3xxx_hwmod_init(); else if (cpu_is_omap44xx()) omap44xx_hwmod_init(); + else + pr_err("Could not init hwmod data - unknown SoC\n"); + + /* Set the default postsetup state for all hwmods */ +#ifdef CONFIG_PM_RUNTIME + postsetup_state = _HWMOD_STATE_IDLE; +#else + postsetup_state = _HWMOD_STATE_ENABLED; +#endif + omap_hwmod_for_each(_set_hwmod_postsetup_state, &postsetup_state); omap_pm_if_early_init(); @@ -355,25 +372,16 @@ void __init omap2_init_common_infrastructure(void) else if (cpu_is_omap44xx()) omap4xxx_clk_init(); else - pr_err("Could not init clock framework - unknown CPU\n"); + pr_err("Could not init clock framework - unknown SoC\n"); } -/* - * XXX Ideally, this function will dwindle into nothingness over time; - * almost all device init code should be possible through initcalls - * and other generalized mechanisms - */ void __init omap2_init_common_devices(struct omap_sdrc_params *sdrc_cs0, struct omap_sdrc_params *sdrc_cs1) { - u8 skip_setup_idle = 0; - omap_serial_early_init(); -#ifndef CONFIG_PM_RUNTIME - skip_setup_idle = 1; -#endif - omap_hwmod_late_init(skip_setup_idle); + omap_hwmod_late_init(); + if (cpu_is_omap24xx() || cpu_is_omap34xx()) { omap2_sdrc_init(sdrc_cs0, sdrc_cs1); _omap2_init_reprogram_sdrc(); -- cgit v1.2.3