-Original Message-
From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-
ow...@vger.kernel.org] On Behalf Of jean.pi...@newoldbits.com
Sent: Friday, December 17, 2010 3:38 PM
To: linux-omap@vger.kernel.org
Cc: khil...@deeprootsystems.com; linux-arm-ker...@lists.infradead.org;
Jean Pihet
Subject: [PATCH 1/7] OMAP3: remove unused code from the ASM sleep code
From: Jean Pihet j-pi...@ti.com
Remove unused code:
- macros,
- variables,
- unused semaphore locking API. This API shall be added back
when needed,
- infinite loops for debug.
Tested on N900 and Beagleboard with full RET and OFF modes,
using cpuidle and suspend.
Signed-off-by: Jean Pihet j-pi...@ti.com
Acked-by: Santosh Shilimkar santosh.shilim...@ti.com
---
arch/arm/mach-omap2/pm.h|1 -
arch/arm/mach-omap2/sleep34xx.S | 58
--
-
2 files changed, 6 insertions(+), 53 deletions(-)
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index aff39d0..e458b2a 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -80,7 +80,6 @@ extern void save_secure_ram_context(u32 *addr);
extern void omap3_save_scratchpad_contents(void);
extern unsigned int omap24xx_idle_loop_suspend_sz;
-extern unsigned int omap34xx_suspend_sz;
extern unsigned int save_secure_ram_context_sz;
extern unsigned int omap24xx_cpu_suspend_sz;
extern unsigned int omap34xx_cpu_suspend_sz;
diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-
omap2/sleep34xx.S
index d2eda01..2191576 100644
--- a/arch/arm/mach-omap2/sleep34xx.S
+++ b/arch/arm/mach-omap2/sleep34xx.S
@@ -35,11 +35,7 @@
#define SDRC_SCRATCHPAD_SEM_V0xfa00291c
-#define PM_PREPWSTST_CORE_V OMAP34XX_PRM_REGADDR(CORE_MOD, \
- OMAP3430_PM_PREPWSTST)
#define PM_PREPWSTST_CORE_P 0x48306AE8
-#define PM_PREPWSTST_MPU_V OMAP34XX_PRM_REGADDR(MPU_MOD, \
- OMAP3430_PM_PREPWSTST)
#define PM_PWSTCTRL_MPU_POMAP3430_PRM_BASE + MPU_MOD +
OMAP2_PM_PWSTCTRL
#define CM_IDLEST1_CORE_VOMAP34XX_CM_REGADDR(CORE_MOD, CM_IDLEST1)
#define CM_IDLEST_CKGEN_VOMAP34XX_CM_REGADDR(PLL_MOD, CM_IDLEST)
@@ -62,36 +58,10 @@
#define SDRC_DLLA_STATUS_V OMAP34XX_SDRC_REGADDR(SDRC_DLLA_STATUS)
#define SDRC_DLLA_CTRL_V OMAP34XX_SDRC_REGADDR(SDRC_DLLA_CTRL)
-.text
-/* Function to acquire the semaphore in scratchpad */
-ENTRY(lock_scratchpad_sem)
- stmfd sp!, {lr} @ save registers on stack
-wait_sem:
- mov r0,#1
- ldr r1, sdrc_scratchpad_sem
-wait_loop:
- ldr r2, [r1]@ load the lock value
- cmp r2, r0 @ is the lock free ?
- beq wait_loop @ not free...
- swp r2, r0, [r1]@ semaphore free so lock it and proceed
- cmp r2, r0 @ did we succeed ?
- beq wait_sem@ no - try again
- ldmfd sp!, {pc} @ restore regs and return
-sdrc_scratchpad_sem:
-.word SDRC_SCRATCHPAD_SEM_V
-ENTRY(lock_scratchpad_sem_sz)
-.word . - lock_scratchpad_sem
-
-.text
-/* Function to release the scratchpad semaphore */
-ENTRY(unlock_scratchpad_sem)
- stmfd sp!, {lr} @ save registers on stack
- ldr r3, sdrc_scratchpad_sem
- mov r2,#0
- str r2,[r3]
- ldmfd sp!, {pc} @ restore regs and return
-ENTRY(unlock_scratchpad_sem_sz)
-.word . - unlock_scratchpad_sem
+
+/*
+ * API functions
+ */
.text
/* Function call to get the restore pointer for resume from OFF */
@@ -178,8 +148,7 @@ ENTRY(es3_sdrc_fix_sz)
/* Function to call rom code to save secure ram context */
ENTRY(save_secure_ram_context)
stmfd sp!, {r1-r12, lr} @ save registers on stack
-save_secure_ram_debug:
- /* b save_secure_ram_debug */ @ enable to debug save code
+
adr r3, api_params @ r3 points to parameters
str r0, [r3,#0x4] @ r0 has sdram address
ldr r12, high_mask
@@ -219,8 +188,7 @@ ENTRY(save_secure_ram_context_sz)
*/
ENTRY(omap34xx_cpu_suspend)
stmfd sp!, {r0-r12, lr} @ save registers on stack
-loop:
- /*b loop*/ @Enable to debug by stepping through code
+
/* r0 contains restore pointer in sdram */
/* r1 contains information about saving context */
ldr r4, sdrc_power @ read the SDRC_POWER register
@@ -252,7 +220,6 @@ loop:
ldmfd sp!, {r0-r12, pc} @ restore regs and return
restore_es3:
- /*b restore_es3*/ @ Enable to debug restore code
ldr r5, pm_prepwstst_core_p
ldr r4, [r5]
and r4, r4, #0x3
@@ -272,7 +239,6 @@ copy_to_sram:
b restore
restore_3630:
- /*b restore_es3630*/@ Enable to debug restore code
ldr r1, pm_prepwstst_core_p
ldr r2, [r1]
