From 55c6c3ad90f606d458d798b36f8ffca98c1894e0 Mon Sep 17 00:00:00 2001 From: Tero Kristo Date: Tue, 4 Mar 2014 15:48:33 +0200 Subject: [PATCH] ARM: OMAP3: PRM: move modem reset to PRM driver This is a more proper isolation of the code. Done in preparation of making PRM an individual driver. Signed-off-by: Tero Kristo --- arch/arm/mach-omap2/pm34xx.c | 5 +---- arch/arm/mach-omap2/prm3xxx.c | 15 +++++++++++++++ arch/arm/mach-omap2/prm3xxx.h | 1 + 3 files changed, 17 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 6d02573ac4c0..acb895deb3cc 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -371,10 +371,7 @@ static void __init omap3_d2d_idle(void) omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK); /* reset modem */ - omap2_prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON_MASK | - OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST_MASK, - CORE_MOD, OMAP2_RM_RSTCTRL); - omap2_prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL); + omap3_prm_reset_modem(); } static void __init prcm_setup_regs(void) diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c index a575b6964bf9..e46ff7184c9d 100644 --- a/arch/arm/mach-omap2/prm3xxx.c +++ b/arch/arm/mach-omap2/prm3xxx.c @@ -259,6 +259,21 @@ int omap3xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits) return c; } +/** + * omap3_prm_reset_modem - toggle reset signal for modem + * + * Toggles the reset signal to modem IP block. Required to allow + * OMAP3430 without stacked modem to idle properly. + */ +void __init omap3_prm_reset_modem(void) +{ + omap2_prm_write_mod_reg( + OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON_MASK | + OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST_MASK, + CORE_MOD, OMAP2_RM_RSTCTRL); + omap2_prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL); +} + /** * omap3xxx_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain * diff --git a/arch/arm/mach-omap2/prm3xxx.h b/arch/arm/mach-omap2/prm3xxx.h index 007ff59602fd..21eb1d5ba524 100644 --- a/arch/arm/mach-omap2/prm3xxx.h +++ b/arch/arm/mach-omap2/prm3xxx.h @@ -164,6 +164,7 @@ 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); +void omap3_prm_reset_modem(void); #endif /* __ASSEMBLER */ -- 2.20.1