1 files changed, 26 insertions, 21 deletions

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index c6cc809afb79..910a7acf542d 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -26,6 +26,7 @@
 #include <linux/err.h>
 #include <linux/gpio.h>
 #include <linux/clk.h>
+#include <linux/delay.h>
 
 #include <plat/sram.h>
 #include <plat/clockdomain.h>
@@ -126,7 +127,15 @@ static void omap3_core_save_context(void)
         /* wait for the save to complete */
         while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
                         & PADCONF_SAVE_DONE))
-                ;
+                udelay(1);
+
+        /*
+         * Force write last pad into memory, as this can fail in some
+         * cases according to erratas 1.157, 1.185
+         */
+        omap_ctrl_writel(omap_ctrl_readl(OMAP343X_PADCONF_ETK_D14),
+                OMAP343X_CONTROL_MEM_WKUP + 0x2a0);
+
         /* Save the Interrupt controller context */
         omap_intc_save_context();
         /* Save the GPMC context */
@@ -392,6 +401,7 @@ void omap_sram_idle(void)
                 prm_set_mod_reg_bits(OMAP3430_EN_IO, WKUP_MOD, PM_WKEN);
                 omap3_enable_io_chain();
         }
+        omap3_intc_prepare_idle();
 
         /*
         * On EMU/HS devices ROM code restores a SRDC value
@@ -438,6 +448,7 @@ void omap_sram_idle(void)
                                                OMAP3430_GR_MOD,
                                                OMAP3_PRM_VOLTCTRL_OFFSET);
         }
+        omap3_intc_resume_idle();
 
         /* PER */
         if (per_next_state < PWRDM_POWER_ON) {
@@ -578,6 +589,8 @@ static int omap3_pm_suspend(void)
         }
 
         omap_uart_prepare_suspend();
+        omap3_intc_suspend();
+
         omap_sram_idle();
 
 restore:
@@ -835,6 +848,8 @@ static void __init prcm_setup_regs(void)
                         CM_AUTOIDLE);
         }
 
+        omap_ctrl_writel(OMAP3430_AUTOIDLE, OMAP2_CONTROL_SYSCONFIG);
+
         /*
          * Set all plls to autoidle. This is needed until autoidle is
          * enabled by clockfw
@@ -875,15 +890,23 @@ static void __init prcm_setup_regs(void)
         prm_write_mod_reg(OMAP3430_IO_EN | OMAP3430_WKUP_EN,
                           OCP_MOD, OMAP3_PRM_IRQENABLE_MPU_OFFSET);
 
+        /* Enable PM_WKEN to support DSS LPR */
+        prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS,
+                                OMAP3430_DSS_MOD, PM_WKEN);
+
         /* Enable wakeups in PER */
         prm_write_mod_reg(OMAP3430_EN_GPIO2 | OMAP3430_EN_GPIO3 |
                           OMAP3430_EN_GPIO4 | OMAP3430_EN_GPIO5 |
-                          OMAP3430_EN_GPIO6 | OMAP3430_EN_UART3,
+                          OMAP3430_EN_GPIO6 | OMAP3430_EN_UART3 |
+                          OMAP3430_EN_MCBSP2 | OMAP3430_EN_MCBSP3 |
+                          OMAP3430_EN_MCBSP4,
                           OMAP3430_PER_MOD, PM_WKEN);
         /* and allow them to wake up MPU */
         prm_write_mod_reg(OMAP3430_GRPSEL_GPIO2 | OMAP3430_EN_GPIO3 |
                           OMAP3430_GRPSEL_GPIO4 | OMAP3430_EN_GPIO5 |
-                          OMAP3430_GRPSEL_GPIO6 | OMAP3430_EN_UART3,
+                          OMAP3430_GRPSEL_GPIO6 | OMAP3430_EN_UART3 |
+                          OMAP3430_EN_MCBSP2 | OMAP3430_EN_MCBSP3 |
+                          OMAP3430_EN_MCBSP4,
                           OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL);
 
         /* Don't attach IVA interrupts */
@@ -904,24 +927,6 @@ static void __init prcm_setup_regs(void)
         /* Clear any pending PRCM interrupts */
         prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
 
-        /* Don't attach IVA interrupts */
-        prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL);
-        prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1);
-        prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3);
-        prm_write_mod_reg(0, OMAP3430_PER_MOD, OMAP3430_PM_IVAGRPSEL);
-
-        /* Clear any pending 'reset' flags */
-        prm_write_mod_reg(0xffffffff, MPU_MOD, RM_RSTST);
-        prm_write_mod_reg(0xffffffff, CORE_MOD, RM_RSTST);
-        prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, RM_RSTST);
-        prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, RM_RSTST);
-        prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, RM_RSTST);
-        prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, RM_RSTST);
-        prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, RM_RSTST);
-
-        /* Clear any pending PRCM interrupts */
-        prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
-
         omap3_iva_idle();
         omap3_d2d_idle();
 }