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-rw-r--r--arch/blackfin/include/asm/context.S9
-rw-r--r--arch/blackfin/mach-bf609/Makefile2
-rw-r--r--arch/blackfin/mach-bf609/dpm.S155
-rw-r--r--arch/blackfin/mach-bf609/hibernate.S65
-rw-r--r--arch/blackfin/mach-bf609/include/mach/pm.h6
-rw-r--r--arch/blackfin/mach-bf609/pm.c80
-rw-r--r--arch/blackfin/mach-common/entry.S7
7 files changed, 197 insertions, 127 deletions
diff --git a/arch/blackfin/include/asm/context.S b/arch/blackfin/include/asm/context.S
index 1f9060395a0..507e7aa6a56 100644
--- a/arch/blackfin/include/asm/context.S
+++ b/arch/blackfin/include/asm/context.S
@@ -396,3 +396,12 @@
call \func;
#endif
.endm
+
+#if defined(CONFIG_BFIN_SCRATCH_REG_RETN)
+# define EX_SCRATCH_REG RETN
+#elif defined(CONFIG_BFIN_SCRATCH_REG_RETE)
+# define EX_SCRATCH_REG RETE
+#else
+# define EX_SCRATCH_REG CYCLES
+#endif
+
diff --git a/arch/blackfin/mach-bf609/Makefile b/arch/blackfin/mach-bf609/Makefile
index 2a27f817454..9a3d9f252c1 100644
--- a/arch/blackfin/mach-bf609/Makefile
+++ b/arch/blackfin/mach-bf609/Makefile
@@ -3,4 +3,4 @@
#
obj-y := dma.o clock.o
-obj-$(CONFIG_PM) += pm.o hibernate.o
+obj-$(CONFIG_PM) += pm.o dpm.o
diff --git a/arch/blackfin/mach-bf609/dpm.S b/arch/blackfin/mach-bf609/dpm.S
new file mode 100644
index 00000000000..62cc3199429
--- /dev/null
+++ b/arch/blackfin/mach-bf609/dpm.S
@@ -0,0 +1,155 @@
+#include <linux/linkage.h>
+#include <asm/blackfin.h>
+#include <asm/dpmc.h>
+
+#include <asm/context.S>
+
+#define PM_STACK (COREA_L1_SCRATCH_START + L1_SCRATCH_LENGTH - 12)
+
+.section .l1.text
+ENTRY(_enter_hibernate)
+ /* switch stack to L1 scratch, prepare for ddr srfr */
+ P0.H = HI(PM_STACK);
+ P0.L = LO(PM_STACK);
+ SP = P0;
+
+ call _bf609_ddr_sr;
+ call _bfin_hibernate_syscontrol;
+
+ P0.H = HI(DPM0_RESTORE4);
+ P0.L = LO(DPM0_RESTORE4);
+ P1.H = _bf609_pm_data;
+ P1.L = _bf609_pm_data;
+ [P0] = P1;
+
+ P0.H = HI(DPM0_CTL);
+ P0.L = LO(DPM0_CTL);
+ R3.H = HI(0x00000010);
+ R3.L = LO(0x00000010);
+
+ bfin_init_pm_bench_cycles;
+
+ [P0] = R3;
+
+ SSYNC;
+ENDPROC(_enter_hibernate)
+
+/* DPM wake up interrupt won't wake up core on bf60x if its core IMASK
+ * is disabled. This behavior differ from bf5xx serial processor.
+ */
+ENTRY(_dummy_deepsleep)
+ [--sp] = SYSCFG;
+ [--sp] = (R7:0,P5:0);
+ cli r0;
+
+ /* get wake up interrupt ID */
+ P0.l = LO(SEC_SCI_BASE + SEC_CSID);
+ P0.h = HI(SEC_SCI_BASE + SEC_CSID);
+ R0 = [P0];
+
+ /* ACK wake up interrupt in SEC */
+ P1.l = LO(SEC_END);
+ P1.h = HI(SEC_END);
+
+ [P1] = R0;
+ SSYNC;
+
+ /* restore EVT 11 entry */
+ p0.h = hi(EVT11);
+ p0.l = lo(EVT11);
+ p1.h = _evt_evt11;
+ p1.l = _evt_evt11;
+
+ [p0] = p1;
+ SSYNC;
+
+ (R7:0,P5:0) = [sp++];
+ SYSCFG = [sp++];
+ RTI;
+ENDPROC(_dummy_deepsleep)
+
+ENTRY(_enter_deepsleep)
+ LINK 0x0;
+ [--sp] = (R7:0,P5:0);
+
+ /* Change EVT 11 entry to dummy handler for wake up event */
+ p0.h = hi(EVT11);
+ p0.l = lo(EVT11);
+ p1.h = _dummy_deepsleep;
+ p1.l = _dummy_deepsleep;
+
+ [p0] = p1;
+
+ P0.H = HI(PM_STACK);
+ P0.L = LO(PM_STACK);
+
+ EX_SCRATCH_REG = SP;
+ SP = P0;
+
+ SSYNC;
+
+ /* should put ddr to self refresh mode before sleep */
+ call _bf609_ddr_sr;
+
+ /* Set DPM controller to deep sleep mode */
+ P0.H = HI(DPM0_CTL);
+ P0.L = LO(DPM0_CTL);
+ R3.H = HI(0x00000008);
+ R3.L = LO(0x00000008);
+ [P0] = R3;
+ CSYNC;
+
+ /* Enable evt 11 in IMASK before idle, otherwise core doesn't wake up. */
+ r0.l = 0x800;
+ r0.h = 0;
+ sti r0;
+ SSYNC;
+
+ /* Fall into deep sleep in idle*/
+ idle;
+ SSYNC;
+
+ /* Restore PLL after wake up from deep sleep */
+ call _bf609_resume_ccbuf;
+
+ /* turn ddr out of self refresh mode */
+ call _bf609_ddr_sr_exit;
+
+ SP = EX_SCRATCH_REG;
+
+ (R7:0,P5:0) = [SP++];
+ UNLINK;
+ RTS;
+ENDPROC(_enter_deepsleep)
+
+.section .text
+ENTRY(_bf609_hibernate)
+ bfin_cpu_reg_save;
+ bfin_core_mmr_save;
+
+ P0.H = _bf609_pm_data;
+ P0.L = _bf609_pm_data;
+ R1.H = 0xDEAD;
+ R1.L = 0xBEEF;
+ R2.H = .Lpm_resume_here;
+ R2.L = .Lpm_resume_here;
+ [P0++] = R1;
+ [P0++] = R2;
+ [P0++] = SP;
+
+ P1.H = _enter_hibernate;
+ P1.L = _enter_hibernate;
+
+ call (P1);
+.Lpm_resume_here:
+
+ bfin_core_mmr_restore;
+ bfin_cpu_reg_restore;
+
+ [--sp] = RETI; /* Clear Global Interrupt Disable */
+ SP += 4;
+
+ RTS;
+
+ENDPROC(_bf609_hibernate)
+
diff --git a/arch/blackfin/mach-bf609/hibernate.S b/arch/blackfin/mach-bf609/hibernate.S
deleted file mode 100644
index d37a532519c..00000000000
--- a/arch/blackfin/mach-bf609/hibernate.S
+++ /dev/null
@@ -1,65 +0,0 @@
-#include <linux/linkage.h>
-#include <asm/blackfin.h>
-#include <asm/dpmc.h>
-
-#define PM_STACK (COREA_L1_SCRATCH_START + L1_SCRATCH_LENGTH - 12)
-
-.section .l1.text
-ENTRY(_enter_hibernate)
- /* switch stack to L1 scratch, prepare for ddr srfr */
- P0.H = HI(PM_STACK);
- P0.L = LO(PM_STACK);
- SP = P0;
-
- call _bf609_ddr_sr;
- call _bfin_hibernate_syscontrol;
-
- P0.H = HI(DPM0_RESTORE4);
- P0.L = LO(DPM0_RESTORE4);
- P1.H = _bf609_pm_data;
- P1.L = _bf609_pm_data;
- [P0] = P1;
-
- P0.H = HI(DPM0_CTL);
- P0.L = LO(DPM0_CTL);
- R3.H = HI(0x00000010);
- R3.L = LO(0x00000010);
-
- bfin_init_pm_bench_cycles;
-
- [P0] = R3;
-
- SSYNC;
-ENDPROC(_enter_hibernate_mode)
-
-.section .text
-ENTRY(_bf609_hibernate)
- bfin_cpu_reg_save;
- bfin_core_mmr_save;
-
- P0.H = _bf609_pm_data;
- P0.L = _bf609_pm_data;
- R1.H = 0xDEAD;
- R1.L = 0xBEEF;
- R2.H = .Lpm_resume_here;
- R2.L = .Lpm_resume_here;
- [P0++] = R1;
- [P0++] = R2;
- [P0++] = SP;
-
- P1.H = _enter_hibernate;
- P1.L = _enter_hibernate;
-
- call (P1);
-.Lpm_resume_here:
-
- bfin_core_mmr_restore;
- bfin_cpu_reg_restore;
-
- [--sp] = RETI; /* Clear Global Interrupt Disable */
- SP += 4;
-
- RTS;
-
-ENDPROC(_bf609_hibernate)
-
diff --git a/arch/blackfin/mach-bf609/include/mach/pm.h b/arch/blackfin/mach-bf609/include/mach/pm.h
index 036d9bdc889..68435f9bafc 100644
--- a/arch/blackfin/mach-bf609/include/mach/pm.h
+++ b/arch/blackfin/mach-bf609/include/mach/pm.h
@@ -11,9 +11,9 @@
#include <linux/suspend.h>
-int bfin609_pm_enter(suspend_state_t state);
-int bf609_pm_prepare(void);
-void bf609_pm_finish(void);
+extern int bfin609_pm_enter(suspend_state_t state);
+extern int bf609_pm_prepare(void);
+extern void bf609_pm_finish(void);
void bf609_hibernate(void);
void bfin_sec_raise_irq(unsigned int sid);
diff --git a/arch/blackfin/mach-bf609/pm.c b/arch/blackfin/mach-bf609/pm.c
index b76966eb16a..6094c7d3b1f 100644
--- a/arch/blackfin/mach-bf609/pm.c
+++ b/arch/blackfin/mach-bf609/pm.c
@@ -18,6 +18,7 @@
#include <asm/pm.h>
#include <mach/pm.h>
#include <asm/blackfin.h>
+#include <asm/mem_init.h>
/***********************************************************/
/* */
@@ -132,60 +133,30 @@ void bfin_cpu_suspend(void)
}
__attribute__((l1_text))
-void bfin_deepsleep(unsigned long mask)
+void bf609_ddr_sr(void)
{
- uint32_t dpm0_ctl;
-
- bfin_write32(DPM0_WAKE_EN, 0x10);
- bfin_write32(DPM0_WAKE_POL, 0x10);
- dpm0_ctl = 0x00000008;
- bfin_write32(DPM0_CTL, dpm0_ctl);
- SSYNC();
- __asm__ __volatile__( \
- ".align 8;" \
- "idle;" \
- : : \
- );
-#ifdef CONFIG_BFIN_PM_WAKEUP_TIME_BENCH
- __asm__ __volatile__(
- "R0 = 0;"
- "CYCLES = R0;"
- "CYCLES2 = R0;"
- "R0 = SYSCFG;"
- "BITSET(R0, 1);"
- "SYSCFG = R0;"
- : : : "R0"
- );
-#endif
-
+ dmc_enter_self_refresh();
}
__attribute__((l1_text))
-void bf609_ddr_sr(void)
+void bf609_ddr_sr_exit(void)
{
- uint32_t reg;
-
- reg = bfin_read_DMC0_CTL();
- reg |= 0x8;
- bfin_write_DMC0_CTL(reg);
+ dmc_exit_self_refresh();
- while (!(bfin_read_DMC0_STAT() & 0x8))
+ /* After wake up from deep sleep and exit DDR from self refress mode,
+ * should wait till CGU PLL is locked.
+ */
+ while (bfin_read32(CGU0_STAT) & CLKSALGN)
continue;
}
__attribute__((l1_text))
-void bf609_ddr_sr_exit(void)
+void bf609_resume_ccbuf(void)
{
- uint32_t reg;
- while (!(bfin_read_DMC0_STAT() & 0x1))
- continue;
+ bfin_write32(DPM0_CCBF_EN, 3);
+ bfin_write32(DPM0_CTL, 2);
- reg = bfin_read_DMC0_CTL();
- reg &= ~0x8;
- bfin_write_DMC0_CTL(reg);
-
- while ((bfin_read_DMC0_STAT() & 0x8))
- continue;
+ while ((bfin_read32(DPM0_STAT) & 0xf) != 1);
}
__attribute__((l1_text))
@@ -208,6 +179,17 @@ void bfin_hibernate_syscontrol(void)
#else
# define SIC_SYSIRQ(irq) ((irq) - IVG15)
#endif
+asmlinkage void enter_deepsleep(void);
+
+__attribute__((l1_text))
+void bfin_deepsleep(unsigned long mask)
+{
+ bfin_write32(DPM0_WAKE_EN, 0x10);
+ bfin_write32(DPM0_WAKE_POL, 0x10);
+ SSYNC();
+ enter_deepsleep();
+}
+
void bfin_hibernate(unsigned long mask)
{
bfin_write32(DPM0_WAKE_EN, 0x10);
@@ -215,8 +197,6 @@ void bfin_hibernate(unsigned long mask)
bfin_write32(DPM0_PGCNTR, 0x0000FFFF);
bfin_write32(DPM0_HIB_DIS, 0xFFFF);
- printk(KERN_DEBUG "hibernate: restore %x pgcnt %x\n", bfin_read32(DPM0_RESTORE0), bfin_read32(DPM0_PGCNTR));
-
bf609_hibernate();
}
@@ -294,6 +274,7 @@ void bf609_cpu_pm_enter(suspend_state_t state)
else {
bfin_hibernate(wakeup);
}
+
}
int bf609_cpu_pm_prepare(void)
@@ -320,21 +301,18 @@ static irqreturn_t test_isr(int irq, void *dev_id)
static irqreturn_t dpm0_isr(int irq, void *dev_id)
{
- uint32_t wake_stat;
-
- wake_stat = bfin_read32(DPM0_WAKE_STAT);
- printk(KERN_DEBUG "enter %s wake stat %08x\n", __func__, wake_stat);
-
- bfin_write32(DPM0_WAKE_STAT, wake_stat);
+ bfin_write32(DPM0_WAKE_STAT, bfin_read32(DPM0_WAKE_STAT));
+ bfin_write32(CGU0_STAT, bfin_read32(CGU0_STAT));
return IRQ_HANDLED;
}
+#endif
static int __init bf609_init_pm(void)
{
int irq;
int error;
-#if CONFIG_PM_BFIN_WAKE_PE12
+#ifdef CONFIG_PM_BFIN_WAKE_PE12
irq = gpio_to_irq(GPIO_PE12);
if (irq < 0) {
error = irq;
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index 04c2fbe41a7..1c3d2c5bb0b 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -25,13 +25,6 @@
#include <asm/context.S>
-#if defined(CONFIG_BFIN_SCRATCH_REG_RETN)
-# define EX_SCRATCH_REG RETN
-#elif defined(CONFIG_BFIN_SCRATCH_REG_RETE)
-# define EX_SCRATCH_REG RETE
-#else
-# define EX_SCRATCH_REG CYCLES
-#endif
#ifdef CONFIG_EXCPT_IRQ_SYSC_L1
.section .l1.text
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-20 14:33:51 +0000