summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-omap2/cpuidle34xx.c2
-rw-r--r--arch/arm/mach-omap2/irq.c18
-rw-r--r--arch/arm/mach-omap2/pm-debug.c12
-rw-r--r--arch/arm/mach-omap2/pm.h8
-rw-r--r--arch/arm/mach-omap2/pm34xx.c47
-rw-r--r--arch/arm/mach-omap2/prcm.c11
-rw-r--r--arch/arm/mach-omap2/sleep34xx.S13
-rw-r--r--arch/arm/plat-omap/common.c26
-rw-r--r--arch/arm/plat-omap/include/plat/irqs.h3
9 files changed, 95 insertions, 45 deletions
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index a26d6a08ae3f..12f0cbfc2894 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -137,7 +137,7 @@ return_sleep_time:
local_irq_enable();
local_fiq_enable();
- return (u32)timespec_to_ns(&ts_idle)/1000;
+ return ts_idle.tv_nsec / NSEC_PER_USEC + ts_idle.tv_sec * USEC_PER_SEC;
}
/**
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index e9bc782fa414..27054025da2b 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -274,4 +274,22 @@ void omap_intc_restore_context(void)
}
/* MIRs are saved and restore with other PRCM registers */
}
+
+void omap3_intc_suspend(void)
+{
+ /* A pending interrupt would prevent OMAP from entering suspend */
+ omap_ack_irq(0);
+}
+
+void omap3_intc_prepare_idle(void)
+{
+ /* Disable autoidle as it can stall interrupt controller */
+ intc_bank_write_reg(0, &irq_banks[0], INTC_SYSCONFIG);
+}
+
+void omap3_intc_resume_idle(void)
+{
+ /* Re-enable autoidle */
+ intc_bank_write_reg(1, &irq_banks[0], INTC_SYSCONFIG);
+}
#endif /* CONFIG_ARCH_OMAP3 */
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index 860b755d2220..a0866268aa41 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -54,8 +54,6 @@ int omap2_pm_debug;
regs[reg_count++].val = \
__raw_readl(OMAP2_L4_IO_ADDRESS(0x480fe000 + (off)))
-static int __init pm_dbg_init(void);
-
void omap2_pm_dump(int mode, int resume, unsigned int us)
{
struct reg {
@@ -167,6 +165,8 @@ struct dentry *pm_dbg_dir;
static int pm_dbg_init_done;
+static int __init pm_dbg_init(void);
+
enum {
DEBUG_FILE_COUNTERS = 0,
DEBUG_FILE_TIMERS,
@@ -488,9 +488,11 @@ int pm_dbg_regset_init(int reg_set)
static int pwrdm_suspend_get(void *data, u64 *val)
{
- *val = omap3_pm_get_suspend_state((struct powerdomain *)data);
+ int ret;
+ ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
+ *val = ret;
- if (*val >= 0)
+ if (ret >= 0)
return 0;
return *val;
}
@@ -604,6 +606,4 @@ static int __init pm_dbg_init(void)
}
arch_initcall(pm_dbg_init);
-#else
-void pm_dbg_update_time(struct powerdomain *pwrdm, int prev) {}
#endif
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index 0bf345db7147..7a9c2d004511 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -32,12 +32,16 @@ extern struct omap_dm_timer *gptimer_wakeup;
#ifdef CONFIG_PM_DEBUG
extern void omap2_pm_dump(int mode, int resume, unsigned int us);
extern int omap2_pm_debug;
+#else
+#define omap2_pm_dump(mode, resume, us) do {} while (0);
+#define omap2_pm_debug 0
+#endif
+
+#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
extern int pm_dbg_regset_save(int reg_set);
extern int pm_dbg_regset_init(int reg_set);
#else
-#define omap2_pm_dump(mode, resume, us) do {} while (0);
-#define omap2_pm_debug 0
#define pm_dbg_update_time(pwrdm, prev) do {} while (0);
#define pm_dbg_regset_save(reg_set) do {} while (0);
#define pm_dbg_regset_init(reg_set) do {} while (0);
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();
}
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index 3ea8177ffb25..cf466ea1dffc 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -44,7 +44,6 @@ struct omap3_prcm_regs {
u32 iva2_cm_clksel2;
u32 cm_sysconfig;
u32 sgx_cm_clksel;
- u32 wkup_cm_clksel;
u32 dss_cm_clksel;
u32 cam_cm_clksel;
u32 per_cm_clksel;
@@ -53,7 +52,6 @@ struct omap3_prcm_regs {
u32 pll_cm_autoidle2;
u32 pll_cm_clksel4;
u32 pll_cm_clksel5;
- u32 pll_cm_clken;
u32 pll_cm_clken2;
u32 cm_polctrl;
u32 iva2_cm_fclken;
@@ -77,7 +75,6 @@ struct omap3_prcm_regs {
u32 usbhost_cm_iclken;
u32 iva2_cm_autiidle2;
u32 mpu_cm_autoidle2;
- u32 pll_cm_autoidle;
u32 iva2_cm_clkstctrl;
u32 mpu_cm_clkstctrl;
u32 core_cm_clkstctrl;
@@ -274,7 +271,6 @@ void omap3_prcm_save_context(void)
prcm_context.cm_sysconfig = __raw_readl(OMAP3430_CM_SYSCONFIG);
prcm_context.sgx_cm_clksel =
cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_CLKSEL);
- prcm_context.wkup_cm_clksel = cm_read_mod_reg(WKUP_MOD, CM_CLKSEL);
prcm_context.dss_cm_clksel =
cm_read_mod_reg(OMAP3430_DSS_MOD, CM_CLKSEL);
prcm_context.cam_cm_clksel =
@@ -291,8 +287,6 @@ void omap3_prcm_save_context(void)
cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL4);
prcm_context.pll_cm_clksel5 =
cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL5);
- prcm_context.pll_cm_clken =
- cm_read_mod_reg(PLL_MOD, CM_CLKEN);
prcm_context.pll_cm_clken2 =
cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKEN2);
prcm_context.cm_polctrl = __raw_readl(OMAP3430_CM_POLCTRL);
@@ -338,8 +332,6 @@ void omap3_prcm_save_context(void)
cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_AUTOIDLE2);
prcm_context.mpu_cm_autoidle2 =
cm_read_mod_reg(MPU_MOD, CM_AUTOIDLE2);
- prcm_context.pll_cm_autoidle =
- cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE);
prcm_context.iva2_cm_clkstctrl =
cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSTCTRL);
prcm_context.mpu_cm_clkstctrl =
@@ -431,7 +423,6 @@ void omap3_prcm_restore_context(void)
__raw_writel(prcm_context.cm_sysconfig, OMAP3430_CM_SYSCONFIG);
cm_write_mod_reg(prcm_context.sgx_cm_clksel, OMAP3430ES2_SGX_MOD,
CM_CLKSEL);
- cm_write_mod_reg(prcm_context.wkup_cm_clksel, WKUP_MOD, CM_CLKSEL);
cm_write_mod_reg(prcm_context.dss_cm_clksel, OMAP3430_DSS_MOD,
CM_CLKSEL);
cm_write_mod_reg(prcm_context.cam_cm_clksel, OMAP3430_CAM_MOD,
@@ -448,7 +439,6 @@ void omap3_prcm_restore_context(void)
OMAP3430ES2_CM_CLKSEL4);
cm_write_mod_reg(prcm_context.pll_cm_clksel5, PLL_MOD,
OMAP3430ES2_CM_CLKSEL5);
- cm_write_mod_reg(prcm_context.pll_cm_clken, PLL_MOD, CM_CLKEN);
cm_write_mod_reg(prcm_context.pll_cm_clken2, PLL_MOD,
OMAP3430ES2_CM_CLKEN2);
__raw_writel(prcm_context.cm_polctrl, OMAP3430_CM_POLCTRL);
@@ -487,7 +477,6 @@ void omap3_prcm_restore_context(void)
cm_write_mod_reg(prcm_context.iva2_cm_autiidle2, OMAP3430_IVA2_MOD,
CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.mpu_cm_autoidle2, MPU_MOD, CM_AUTOIDLE2);
- cm_write_mod_reg(prcm_context.pll_cm_autoidle, PLL_MOD, CM_AUTOIDLE);
cm_write_mod_reg(prcm_context.iva2_cm_clkstctrl, OMAP3430_IVA2_MOD,
CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.mpu_cm_clkstctrl, MPU_MOD, CM_CLKSTCTRL);
diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
index 15268f8b61de..c3626ea48143 100644
--- a/arch/arm/mach-omap2/sleep34xx.S
+++ b/arch/arm/mach-omap2/sleep34xx.S
@@ -245,7 +245,8 @@ restore:
mov r1, #0 @ set task id for ROM code in r1
mov r2, #4 @ set some flags in r2, r6
mov r6, #0xff
- adr r3, write_aux_control_params @ r3 points to parameters
+ ldr r4, scratchpad_base
+ ldr r3, [r4, #0xBC] @ r3 points to parameters
mcr p15, 0, r0, c7, c10, 4 @ data write barrier
mcr p15, 0, r0, c7, c10, 5 @ data memory barrier
.word 0xE1600071 @ call SMI monitor (smi #1)
@@ -253,14 +254,14 @@ restore:
b logic_l1_restore
l2_inv_api_params:
.word 0x1, 0x00
-write_aux_control_params:
- .word 0x1, 0x72
l2_inv_gp:
/* Execute smi to invalidate L2 cache */
mov r12, #0x1 @ set up to invalide L2
smi: .word 0xE1600070 @ Call SMI monitor (smieq)
/* Write to Aux control register to set some bits */
- mov r0, #0x72
+ ldr r4, scratchpad_base
+ ldr r3, [r4,#0xBC]
+ ldr r0, [r3,#4]
mov r12, #0x3
.word 0xE1600070 @ Call SMI monitor (smieq)
logic_l1_restore:
@@ -271,6 +272,7 @@ logic_l1_restore:
ldr r4, scratchpad_base
ldr r3, [r4,#0xBC]
+ adds r3, r3, #8
ldmia r3!, {r4-r6}
mov sp, r4
msr spsr_cxsf, r5
@@ -387,6 +389,9 @@ usettbr0:
save_context_wfi:
/*b save_context_wfi*/ @ enable to debug save code
mov r8, r0 /* Store SDRAM address in r8 */
+ mrc p15, 0, r5, c1, c0, 1 @ Read Auxiliary Control Register
+ mov r4, #0x1 @ Number of parameters for restore call
+ stmia r8!, {r4-r5}
/* Check what that target sleep state is:stored in r1*/
/* 1 - Only L1 and logic lost */
/* 2 - Only L2 lost */
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index bf1eaf3a27d4..dddc0273bc8b 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -172,6 +172,32 @@ unsigned long long sched_clock(void)
clocksource_32k.mult, clocksource_32k.shift);
}
+/**
+ * read_persistent_clock - Return time from a persistent clock.
+ *
+ * Reads the time from a source which isn't disabled during PM, the
+ * 32k sync timer. Convert the cycles elapsed since last read into
+ * nsecs and adds to a monotonically increasing timespec.
+ */
+static struct timespec persistent_ts;
+static cycles_t cycles, last_cycles;
+void read_persistent_clock(struct timespec *ts)
+{
+ unsigned long long nsecs;
+ cycles_t delta;
+ struct timespec *tsp = &persistent_ts;
+
+ last_cycles = cycles;
+ cycles = clocksource_32k.read(&clocksource_32k);
+ delta = cycles - last_cycles;
+
+ nsecs = clocksource_cyc2ns(delta,
+ clocksource_32k.mult, clocksource_32k.shift);
+
+ timespec_add_ns(tsp, nsecs);
+ *ts = *tsp;
+}
+
static int __init omap_init_clocksource_32k(void)
{
static char err[] __initdata = KERN_ERR
diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h
index 97d6c50c3dcb..c0ab7c80f72e 100644
--- a/arch/arm/plat-omap/include/plat/irqs.h
+++ b/arch/arm/plat-omap/include/plat/irqs.h
@@ -499,6 +499,9 @@ extern void omap_init_irq(void);
extern int omap_irq_pending(void);
void omap_intc_save_context(void);
void omap_intc_restore_context(void);
+void omap3_intc_suspend(void);
+void omap3_intc_prepare_idle(void);
+void omap3_intc_resume_idle(void);
#endif
#include <mach/hardware.h>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 20:23:07 +0000