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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S')
-rw-r--r--ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S228
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diff --git a/ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S b/ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S
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index d4e9316e..00000000
--- a/ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * (C) Copyright 2009, Texas Instruments, Inc. http://www.ti.com/
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/* replicated define because linux/bitops.h cannot be included in assembly */
-#define BIT(nr) (1 << (nr))
-
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-#include <mach/psc.h>
-#include <mach/ddr2.h>
-
-#include "clock.h"
-
-/* Arbitrary, hardware currently does not update PHYRDY correctly */
-#define PHYRDY_CYCLES 0x1000
-
-/* Assume 25 MHz speed for the cycle conversions since PLLs are bypassed */
-#define PLL_BYPASS_CYCLES (PLL_BYPASS_TIME * 25)
-#define PLL_RESET_CYCLES (PLL_RESET_TIME * 25)
-#define PLL_LOCK_CYCLES (PLL_LOCK_TIME * 25)
-
-#define DEEPSLEEP_SLEEPENABLE_BIT BIT(31)
-
- .text
-/*
- * Move DaVinci into deep sleep state
- *
- * Note: This code is copied to internal SRAM by PM code. When the DaVinci
- * wakes up it continues execution at the point it went to sleep.
- * Register Usage:
- * r0: contains virtual base for DDR2 controller
- * r1: contains virtual base for DDR2 Power and Sleep controller (PSC)
- * r2: contains PSC number for DDR2
- * r3: contains virtual base DDR2 PLL controller
- * r4: contains virtual address of the DEEPSLEEP register
- */
-ENTRY(davinci_cpu_suspend)
- stmfd sp!, {r0-r12, lr} @ save registers on stack
-
- ldr ip, CACHE_FLUSH
- blx ip
-
- ldmia r0, {r0-r4}
-
- /*
- * Switch DDR to self-refresh mode.
- */
-
- /* calculate SDRCR address */
- ldr ip, [r0, #DDR2_SDRCR_OFFSET]
- bic ip, ip, #DDR2_SRPD_BIT
- orr ip, ip, #DDR2_LPMODEN_BIT
- str ip, [r0, #DDR2_SDRCR_OFFSET]
-
- ldr ip, [r0, #DDR2_SDRCR_OFFSET]
- orr ip, ip, #DDR2_MCLKSTOPEN_BIT
- str ip, [r0, #DDR2_SDRCR_OFFSET]
-
- mov ip, #PHYRDY_CYCLES
-1: subs ip, ip, #0x1
- bne 1b
-
- /* Disable DDR2 LPSC */
- mov r7, r0
- mov r0, #0x2
- bl davinci_ddr_psc_config
- mov r0, r7
-
- /* Disable clock to DDR PHY */
- ldr ip, [r3, #PLLDIV1]
- bic ip, ip, #PLLDIV_EN
- str ip, [r3, #PLLDIV1]
-
- /* Put the DDR PLL in bypass and power down */
- ldr ip, [r3, #PLLCTL]
- bic ip, ip, #PLLCTL_PLLENSRC
- bic ip, ip, #PLLCTL_PLLEN
- str ip, [r3, #PLLCTL]
-
- /* Wait for PLL to switch to bypass */
- mov ip, #PLL_BYPASS_CYCLES
-2: subs ip, ip, #0x1
- bne 2b
-
- /* Power down the PLL */
- ldr ip, [r3, #PLLCTL]
- orr ip, ip, #PLLCTL_PLLPWRDN
- str ip, [r3, #PLLCTL]
-
- /* Go to deep sleep */
- ldr ip, [r4]
- orr ip, ip, #DEEPSLEEP_SLEEPENABLE_BIT
- /* System goes to sleep beyond after this instruction */
- str ip, [r4]
-
- /* Wake up from sleep */
-
- /* Clear sleep enable */
- ldr ip, [r4]
- bic ip, ip, #DEEPSLEEP_SLEEPENABLE_BIT
- str ip, [r4]
-
- /* initialize the DDR PLL controller */
-
- /* Put PLL in reset */
- ldr ip, [r3, #PLLCTL]
- bic ip, ip, #PLLCTL_PLLRST
- str ip, [r3, #PLLCTL]
-
- /* Clear PLL power down */
- ldr ip, [r3, #PLLCTL]
- bic ip, ip, #PLLCTL_PLLPWRDN
- str ip, [r3, #PLLCTL]
-
- mov ip, #PLL_RESET_CYCLES
-3: subs ip, ip, #0x1
- bne 3b
-
- /* Bring PLL out of reset */
- ldr ip, [r3, #PLLCTL]
- orr ip, ip, #PLLCTL_PLLRST
- str ip, [r3, #PLLCTL]
-
- /* Wait for PLL to lock (assume prediv = 1, 25MHz OSCIN) */
- mov ip, #PLL_LOCK_CYCLES
-4: subs ip, ip, #0x1
- bne 4b
-
- /* Remove PLL from bypass mode */
- ldr ip, [r3, #PLLCTL]
- bic ip, ip, #PLLCTL_PLLENSRC
- orr ip, ip, #PLLCTL_PLLEN
- str ip, [r3, #PLLCTL]
-
- /* Start 2x clock to DDR2 */
-
- ldr ip, [r3, #PLLDIV1]
- orr ip, ip, #PLLDIV_EN
- str ip, [r3, #PLLDIV1]
-
- /* Enable VCLK */
-
- /* Enable DDR2 LPSC */
- mov r7, r0
- mov r0, #0x3
- bl davinci_ddr_psc_config
- mov r0, r7
-
- /* clear MCLKSTOPEN */
-
- ldr ip, [r0, #DDR2_SDRCR_OFFSET]
- bic ip, ip, #DDR2_MCLKSTOPEN_BIT
- str ip, [r0, #DDR2_SDRCR_OFFSET]
-
- ldr ip, [r0, #DDR2_SDRCR_OFFSET]
- bic ip, ip, #DDR2_LPMODEN_BIT
- str ip, [r0, #DDR2_SDRCR_OFFSET]
-
- /* Restore registers and return */
- ldmfd sp!, {r0-r12, pc}
-
-ENDPROC(davinci_cpu_suspend)
-
-/*
- * Disables or Enables DDR2 LPSC
- * Register Usage:
- * r0: Enable or Disable LPSC r0 = 0x3 => Enable, r0 = 0x2 => Disable LPSC
- * r1: contains virtual base for DDR2 Power and Sleep controller (PSC)
- * r2: contains PSC number for DDR2
- */
-ENTRY(davinci_ddr_psc_config)
- /* Set next state in mdctl for DDR2 */
- mov r6, #MDCTL
- add r6, r6, r2, lsl #2
- ldr ip, [r1, r6]
- bic ip, ip, #MDSTAT_STATE_MASK
- orr ip, ip, r0
- str ip, [r1, r6]
-
- /* Enable the Power Domain Transition Command */
- ldr ip, [r1, #PTCMD]
- orr ip, ip, #0x1
- str ip, [r1, #PTCMD]
-
- /* Check for Transition Complete (PTSTAT) */
-ptstat_done:
- ldr ip, [r1, #PTSTAT]
- and ip, ip, #0x1
- cmp ip, #0x0
- bne ptstat_done
-
- /* Check for DDR2 clock disable completion; */
- mov r6, #MDSTAT
- add r6, r6, r2, lsl #2
-ddr2clk_stop_done:
- ldr ip, [r1, r6]
- and ip, ip, #MDSTAT_STATE_MASK
- cmp ip, r0
- bne ddr2clk_stop_done
-
- mov pc, lr
-ENDPROC(davinci_ddr_psc_config)
-
-CACHE_FLUSH:
-#ifdef CONFIG_CPU_V6
- .word v6_flush_kern_cache_all
-#else
- .word arm926_flush_kern_cache_all
-#endif
-
-ENTRY(davinci_cpu_suspend_sz)
- .word . - davinci_cpu_suspend
-ENDPROC(davinci_cpu_suspend_sz)