Blackfin arch: Fix Bug - System with EMAC driver enabled - Core not idling

 - Disable all bits in SIC_IWR unless we are going into a real (DPMC)
   power saving mode. Any Interrupt can wake the core form it's idle state.

 - Remove deep sleep mode as it is not going to be used anywhere:
   We support sleep, sleep deeper and hibernate.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

arch/blackfin/mach-bf527/head.S

@@ -183,13 +183,6 @@ ENTRY(_start_dma_code)
 	[P2] = R1;
 	SSYNC;
 
-	p0.h = hi(SIC_IWR0);
-	p0.l = lo(SIC_IWR0);
-	r0.l = lo(IWR_ENABLE_ALL);
-	r0.h = hi(IWR_ENABLE_ALL);
-	[p0] = r0;
-	SSYNC;
-
 	RTS;
 ENDPROC(_start_dma_code)
 #endif /* CONFIG_BFIN_KERNEL_CLOCK */

arch/blackfin/mach-bf533/head.S

@@ -177,13 +177,6 @@ ENTRY(_start_dma_code)
 	[P2] = R1;
 	SSYNC;
 
-	p0.h = hi(SIC_IWR);
-	p0.l = lo(SIC_IWR);
-	r0.l = lo(IWR_ENABLE_ALL);
-	r0.h = hi(IWR_ENABLE_ALL);
-	[p0] = r0;
-	SSYNC;
-
 	RTS;
 ENDPROC(_start_dma_code)
 #endif /* CONFIG_BFIN_KERNEL_CLOCK */

arch/blackfin/mach-bf537/head.S

@@ -197,13 +197,6 @@ ENTRY(_start_dma_code)
 	[P2] = R1;
 	SSYNC;
 
-	p0.h = hi(SIC_IWR);
-	p0.l = lo(SIC_IWR);
-	r0.l = lo(IWR_ENABLE_ALL);
-	r0.h = hi(IWR_ENABLE_ALL);
-	[p0] = r0;
-	SSYNC;
-
 	RTS;
 ENDPROC(_start_dma_code)
 #endif /* CONFIG_BFIN_KERNEL_CLOCK */

arch/blackfin/mach-bf548/head.S

@@ -201,13 +201,6 @@ ENTRY(_start_dma_code)
 	SSYNC;
 #endif
 
-	p0.h = hi(SIC_IWR0);
-	p0.l = lo(SIC_IWR0);
-	r0.l = lo(IWR_ENABLE_ALL);
-	r0.h = hi(IWR_ENABLE_ALL);
-	[p0] = r0;
-	SSYNC;
-
 	RTS;
 ENDPROC(_start_dma_code)
 #endif /* CONFIG_BFIN_KERNEL_CLOCK */

arch/blackfin/mach-common/dpmc_modes.S

@@ -78,62 +78,6 @@ ENTRY(_hibernate_mode)
 	jump .Lforever;
 ENDPROC(_hibernate_mode)
 
-ENTRY(_deep_sleep)
-	[--SP] = ( R7:0, P5:0 );
-	[--SP] =  RETS;
-
-	CLI R4;
-
-	R0 = IWR_ENABLE(0);
-	R1 = IWR_DISABLE_ALL;
-	R2 = IWR_DISABLE_ALL;
-
-	call _set_sic_iwr;
-
-	call _set_dram_srfs;
-
-	/* Clear all the interrupts,bits sticky */
-	R0 = 0xFFFF (Z);
-	call _set_rtc_istat
-
-	P0.H = hi(PLL_CTL);
-	P0.L = lo(PLL_CTL);
-	R0 = W[P0](z);
-	BITSET (R0, 5);
-	W[P0] = R0.L;
-
-	call _test_pll_locked;
-
-	SSYNC;
-	IDLE;
-
-	call _unset_dram_srfs;
-
-	call _test_pll_locked;
-
-	R0 = IWR_ENABLE(0);
-	R1 = IWR_DISABLE_ALL;
-	R2 = IWR_DISABLE_ALL;
-
-	call _set_sic_iwr;
-
-	P0.H = hi(PLL_CTL);
-	P0.L = lo(PLL_CTL);
-	R0 = w[p0](z);
-	BITCLR (R0, 3);
-	BITCLR (R0, 5);
-	BITCLR (R0, 8);
-	w[p0] = R0;
-	IDLE;
-	call _test_pll_locked;
-
-	STI R4;
-
-	RETS = [SP++];
-	( R7:0, P5:0 ) = [SP++];
-	RTS;
-ENDPROC(_deep_sleep)
-
 ENTRY(_sleep_deeper)
 	[--SP] = ( R7:0, P5:0 );
 	[--SP] =  RETS;

arch/blackfin/mach-common/ints-priority.c

@@ -1068,13 +1068,13 @@ int __init init_arch_irq(void)
 	    IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
 
 #if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
-	bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
-	bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
+	bfin_write_SIC_IWR0(IWR_DISABLE_ALL);
+	bfin_write_SIC_IWR1(IWR_DISABLE_ALL);
 # ifdef CONFIG_BF54x
-	bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
+	bfin_write_SIC_IWR2(IWR_DISABLE_ALL);
 # endif
 #else
-	bfin_write_SIC_IWR(IWR_ENABLE_ALL);
+	bfin_write_SIC_IWR(IWR_DISABLE_ALL);
 #endif
 
 	return 0;

arch/blackfin/mach-common/pm.c

@@ -83,13 +83,13 @@ void bfin_pm_suspend_standby_enter(void)
 	bfin_pm_standby_restore();
 
 #if defined(CONFIG_BF54x) || defined(CONFIG_BF52x)  || defined(CONFIG_BF561)
-	bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
-	bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
+	bfin_write_SIC_IWR0(IWR_DISABLE_ALL);
+	bfin_write_SIC_IWR1(IWR_DISABLE_ALL);
 # ifdef CONFIG_BF54x
-	bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
+	bfin_write_SIC_IWR2(IWR_DISABLE_ALL);
 # endif
 #else
-	bfin_write_SIC_IWR(IWR_ENABLE_ALL);
+	bfin_write_SIC_IWR(IWR_DISABLE_ALL);
 #endif
 
 	local_irq_restore(flags);

include/asm-blackfin/dpmc.h

@@ -11,7 +11,6 @@
 #ifndef __ASSEMBLY__
 
 void sleep_mode(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
-void deep_sleep(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
 void hibernate_mode(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
 void sleep_deeper(u32 sic_iwr0, u32 sic_iwr1, u32 sic_iwr2);
 void do_hibernate(int wakeup);