1 files changed, 45 insertions, 15 deletions

diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
index 751f3549bf6f..f4796c002070 100644
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -44,8 +44,7 @@ struct omap3_scratchpad {
 };
 
 struct omap3_scratchpad_prcm_block {
-        u32 prm_clksrc_ctrl;
-        u32 prm_clksel;
+        u32 prm_contents[2];
         u32 cm_contents[11];
         u32 prcm_block_size;
 };
@@ -282,13 +281,9 @@ void omap3_clear_scratchpad_contents(void)
         void __iomem *v_addr;
         u32 offset = 0;
         v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM);
-        if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
-            OMAP3430_GLOBAL_COLD_RST_MASK) {
+        if (omap3xxx_prm_clear_global_cold_reset()) {
                 for ( ; offset <= max_offset; offset += 0x4)
                         writel_relaxed(0x0, (v_addr + offset));
-                omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
-                                           OMAP3430_GR_MOD,
-                                           OMAP3_PRM_RSTST_OFFSET);
         }
 }
 
@@ -331,13 +326,7 @@ void omap3_save_scratchpad_contents(void)
         scratchpad_contents.sdrc_block_offset = 0x64;
 
         /* Populate the PRCM block contents */
-        prcm_block_contents.prm_clksrc_ctrl =
-                omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
-                                       OMAP3_PRM_CLKSRC_CTRL_OFFSET);
-        prcm_block_contents.prm_clksel =
-                omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
-                                       OMAP3_PRM_CLKSEL_OFFSET);
-
+        omap3_prm_save_scratchpad_contents(prcm_block_contents.prm_contents);
         omap3_cm_save_scratchpad_contents(prcm_block_contents.cm_contents);
 
         prcm_block_contents.prcm_block_size = 0x0;
@@ -575,9 +564,50 @@ int omap3_ctrl_save_padconf(void)
  * 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)
+static void __init omap3_ctrl_set_iva_bootmode_idle(void)
 {
         omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE,
                          OMAP343X_CONTROL_IVA2_BOOTMOD);
 }
+
+/**
+ * omap3_ctrl_setup_d2d_padconf - setup stacked modem pads for idle
+ *
+ * Sets up the pads controlling the stacked modem in such way that the
+ * device can enter idle.
+ */
+static void __init omap3_ctrl_setup_d2d_padconf(void)
+{
+        u16 mask, padconf;
+
+        /*
+         * In a stand alone OMAP3430 where there is not a stacked
+         * modem for the D2D Idle Ack and D2D MStandby must be pulled
+         * high. S CONTROL_PADCONF_SAD2D_IDLEACK and
+         * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up.
+         */
+        mask = (1 << 4) | (1 << 3); /* pull-up, enabled */
+        padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY);
+        padconf |= mask;
+        omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY);
+
+        padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK);
+        padconf |= mask;
+        omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK);
+}
+
+/**
+ * omap3_ctrl_init - does static initializations for control module
+ *
+ * Initializes system control module. This sets up the sysconfig autoidle,
+ * and sets up modem and iva2 so that they can be idled properly.
+ */
+void __init omap3_ctrl_init(void)
+{
+        omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG);
+
+        omap3_ctrl_set_iva_bootmode_idle();
+
+        omap3_ctrl_setup_d2d_padconf();
+}
 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */