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/*
* Copyright 2004-2008 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/linkage.h>
#include <asm/blackfin.h>
#include <asm/mach/irq.h>
.section .l1.text
ENTRY(_sleep_mode)
[--SP] = ( R7:0, P5:0 );
[--SP] = RETS;
call _set_sic_iwr;
R0 = 0xFFFF (Z);
call _set_rtc_istat;
P0.H = hi(PLL_CTL);
P0.L = lo(PLL_CTL);
R1 = W[P0](z);
BITSET (R1, 3);
W[P0] = R1.L;
CLI R2;
SSYNC;
IDLE;
STI R2;
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);
R7 = w[p0](z);
BITCLR (R7, 3);
BITCLR (R7, 5);
w[p0] = R7.L;
IDLE;
call _test_pll_locked;
RETS = [SP++];
( R7:0, P5:0 ) = [SP++];
RTS;
ENTRY(_hibernate_mode)
[--SP] = ( R7:0, P5:0 );
[--SP] = RETS;
call _set_sic_iwr;
R0 = 0xFFFF (Z);
call _set_rtc_istat;
P0.H = hi(VR_CTL);
P0.L = lo(VR_CTL);
R1 = W[P0](z);
BITSET (R1, 8);
BITCLR (R1, 0);
BITCLR (R1, 1);
W[P0] = R1.L;
SSYNC;
CLI R2;
IDLE;
/* Actually, adding anything may not be necessary...SDRAM contents
* are lost
*/
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;
ENTRY(_sleep_deeper)
[--SP] = ( R7:0, P5:0 );
[--SP] = RETS;
CLI R4;
P3 = R0;
P4 = R1;
P5 = R2;
R0 = IWR_ENABLE(0);
R1 = IWR_DISABLE_ALL;
R2 = IWR_DISABLE_ALL;
call _set_sic_iwr;
call _set_dram_srfs; /* Set SDRAM Self Refresh */
/* Clear all the interrupts,bits sticky */
R0 = 0xFFFF (Z);
call _set_rtc_istat;
P0.H = hi(PLL_DIV);
P0.L = lo(PLL_DIV);
R6 = W[P0](z);
R0.L = 0xF;
W[P0] = R0.l; /* Set Max VCO to SCLK divider */
P0.H = hi(PLL_CTL);
P0.L = lo(PLL_CTL);
R5 = W[P0](z);
R0.L = (CONFIG_MIN_VCO_HZ/CONFIG_CLKIN_HZ) << 9;
W[P0] = R0.l; /* Set Min CLKIN to VCO multiplier */
SSYNC;
IDLE;
call _test_pll_locked;
P0.H = hi(VR_CTL);
P0.L = lo(VR_CTL);
R7 = W[P0](z);
R1 = 0x6;
R1 <<= 16;
R2 = 0x0404(Z);
R1 = R1|R2;
R2 = DEPOSIT(R7, R1);
W[P0] = R2; /* Set Min Core Voltage */
SSYNC;
IDLE;
call _test_pll_locked;
R0 = P3;
R1 = P4;
R3 = P5;
call _set_sic_iwr; /* Set Awake from IDLE */
P0.H = hi(PLL_CTL);
P0.L = lo(PLL_CTL);
R0 = W[P0](z);
BITSET (R0, 3);
W[P0] = R0.L; /* Turn CCLK OFF */
SSYNC;
IDLE;
call _test_pll_locked;
R0 = IWR_ENABLE(0);
R1 = IWR_DISABLE_ALL;
R2 = IWR_DISABLE_ALL;
call _set_sic_iwr; /* Set Awake from IDLE PLL */
P0.H = hi(VR_CTL);
P0.L = lo(VR_CTL);
W[P0]= R7;
SSYNC;
IDLE;
call _test_pll_locked;
P0.H = hi(PLL_DIV);
P0.L = lo(PLL_DIV);
W[P0]= R6; /* Restore CCLK and SCLK divider */
P0.H = hi(PLL_CTL);
P0.L = lo(PLL_CTL);
w[p0] = R5; /* Restore VCO multiplier */
IDLE;
call _test_pll_locked;
call _unset_dram_srfs; /* SDRAM Self Refresh Off */
STI R4;
RETS = [SP++];
( R7:0, P5:0 ) = [SP++];
RTS;
ENTRY(_set_dram_srfs)
/* set the dram to self refresh mode */
#if defined(CONFIG_BF54x)
P0.H = hi(EBIU_RSTCTL);
P0.L = lo(EBIU_RSTCTL);
R2 = [P0];
R3.H = hi(SRREQ);
R3.L = lo(SRREQ);
#else
P0.H = hi(EBIU_SDGCTL);
P0.L = lo(EBIU_SDGCTL);
R2 = [P0];
R3.H = hi(SRFS);
R3.L = lo(SRFS);
#endif
R2 = R2|R3;
[P0] = R2;
ssync;
#if defined(CONFIG_BF54x)
.LSRR_MODE:
R2 = [P0];
CC = BITTST(R2, 4);
if !CC JUMP .LSRR_MODE;
#endif
RTS;
ENTRY(_unset_dram_srfs)
/* set the dram out of self refresh mode */
#if defined(CONFIG_BF54x)
P0.H = hi(EBIU_RSTCTL);
P0.L = lo(EBIU_RSTCTL);
R2 = [P0];
R3.H = hi(SRREQ);
R3.L = lo(SRREQ);
#else
P0.H = hi(EBIU_SDGCTL);
P0.L = lo(EBIU_SDGCTL);
R2 = [P0];
R3.H = hi(SRFS);
R3.L = lo(SRFS);
#endif
R3 = ~R3;
R2 = R2&R3;
[P0] = R2;
ssync;
RTS;
ENTRY(_set_sic_iwr)
#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
P0.H = hi(SIC_IWR0);
P0.L = lo(SIC_IWR0);
P1.H = hi(SIC_IWR1);
P1.L = lo(SIC_IWR1);
[P1] = R1;
#if defined(CONFIG_BF54x)
P1.H = hi(SIC_IWR2);
P1.L = lo(SIC_IWR2);
[P1] = R2;
#endif
#else
P0.H = hi(SIC_IWR);
P0.L = lo(SIC_IWR);
#endif
[P0] = R0;
SSYNC;
RTS;
ENTRY(_set_rtc_istat)
#ifndef CONFIG_BF561
P0.H = hi(RTC_ISTAT);
P0.L = lo(RTC_ISTAT);
w[P0] = R0.L;
SSYNC;
#endif
RTS;
ENTRY(_test_pll_locked)
P0.H = hi(PLL_STAT);
P0.L = lo(PLL_STAT);
1:
R0 = W[P0] (Z);
CC = BITTST(R0,5);
IF !CC JUMP 1b;
RTS;
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