From f5f9d132d1c212bf3828c7926d95f79e0c20d243 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Tue, 21 Dec 2010 15:30:53 -0700 Subject: OMAP3: control/PRCM: move CONTROL_PADCONF_SYS_NIRQ save/restore to SCM code For some reason, the PRCM context save/restore code also saves and restores a single System Control Module register, CONTROL_PADCONF_SYS_NIRQ. This is probably just an error -- the register should be handled by SCM code -- so this patch moves it there. If this register really does need to be saved and restored before the rest of the PRCM registers, the code to do so should live in the SCM code, and the PM code should call this separate function. This register pertains to devices with a stacked modem, so this patch is unlikely to affect most OMAP devices out there. Signed-off-by: Paul Walmsley Cc: Kevin Hilman Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Tested-by: Santosh Shilimkar Tested-by: Rajendra Nayak diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c index d058f7c..b066c6e 100644 --- a/arch/arm/mach-omap2/control.c +++ b/arch/arm/mach-omap2/control.c @@ -134,6 +134,7 @@ struct omap3_control_regs { u32 sramldo4; u32 sramldo5; u32 csi; + u32 padconf_sys_nirq; }; static struct omap3_control_regs control_context; @@ -457,6 +458,8 @@ void omap3_control_save_context(void) control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4); control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5); control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI); + control_context.padconf_sys_nirq = + omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ); return; } @@ -513,6 +516,8 @@ void omap3_control_restore_context(void) omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4); omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5); omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI); + omap_ctrl_writel(control_context.padconf_sys_nirq, + OMAP343X_CONTROL_PADCONF_SYSNIRQ); return; } diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c index 2eca847..d27cdba 100644 --- a/arch/arm/mach-omap2/prcm.c +++ b/arch/arm/mach-omap2/prcm.c @@ -42,7 +42,6 @@ static void __iomem *cm2_base; #define MAX_MODULE_ENABLE_WAIT 100000 struct omap3_prcm_regs { - u32 control_padconf_sys_nirq; u32 iva2_cm_clksel1; u32 iva2_cm_clksel2; u32 cm_sysconfig; @@ -312,8 +311,6 @@ void __init omap2_set_globals_prcm(struct omap_globals *omap2_globals) #ifdef CONFIG_ARCH_OMAP3 void omap3_prcm_save_context(void) { - prcm_context.control_padconf_sys_nirq = - omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ); prcm_context.iva2_cm_clksel1 = cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSEL1); prcm_context.iva2_cm_clksel2 = @@ -466,8 +463,6 @@ void omap3_prcm_save_context(void) void omap3_prcm_restore_context(void) { - omap_ctrl_writel(prcm_context.control_padconf_sys_nirq, - OMAP343X_CONTROL_PADCONF_SYSNIRQ); cm_write_mod_reg(prcm_context.iva2_cm_clksel1, OMAP3430_IVA2_MOD, CM_CLKSEL1); cm_write_mod_reg(prcm_context.iva2_cm_clksel2, OMAP3430_IVA2_MOD, -- cgit v0.10.2