diff options
author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
---|---|---|
committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
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.S | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S b/ANDROID_3.4.5/arch/arm/mach-davinci/sleep.S deleted file mode 100644 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) |