From: Russell King Date: Tue, 21 Jun 2011 15:29:30 +0000 (+0100) Subject: ARM: pm: pxa: move cpu_suspend into C code X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a9503d2185bbc28e498c435a07f24986c48b5cbe;p=deliverable%2Flinux.git ARM: pm: pxa: move cpu_suspend into C code We don't need a veneer for cpu_suspend, it can be called directly from C code now. Move it into the PXA CPU suspend functions, along with the accumulator register saving/restoring. Signed-off-by: Russell King --- diff --git a/arch/arm/mach-pxa/include/mach/pm.h b/arch/arm/mach-pxa/include/mach/pm.h index f15afe012995..a566720527cf 100644 --- a/arch/arm/mach-pxa/include/mach/pm.h +++ b/arch/arm/mach-pxa/include/mach/pm.h @@ -22,8 +22,8 @@ struct pxa_cpu_pm_fns { extern struct pxa_cpu_pm_fns *pxa_cpu_pm_fns; /* sleep.S */ -extern void pxa25x_cpu_suspend(unsigned int, long); -extern void pxa27x_cpu_suspend(unsigned int, long); +extern void pxa25x_finish_suspend(unsigned long); +extern void pxa27x_finish_suspend(unsigned long); extern int pxa_pm_enter(suspend_state_t state); extern int pxa_pm_prepare(void); diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index fed363cec9c6..fd7725cb5c01 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -244,7 +244,8 @@ static void pxa25x_cpu_pm_enter(suspend_state_t state) switch (state) { case PM_SUSPEND_MEM: - pxa25x_cpu_suspend(PWRMODE_SLEEP, PLAT_PHYS_OFFSET - PAGE_OFFSET); + cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, PWRMODE_SLEEP, + pxa25x_finish_suspend); break; } } diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index 2fecbec58d88..824379d43758 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -284,6 +284,11 @@ void pxa27x_cpu_pm_restore(unsigned long *sleep_save) void pxa27x_cpu_pm_enter(suspend_state_t state) { extern void pxa_cpu_standby(void); +#ifndef CONFIG_IWMMXT + u64 acc0; + + asm volatile("mra %Q0, %R0, acc0" : "=r" (acc0)); +#endif /* ensure voltage-change sequencer not initiated, which hangs */ PCFR &= ~PCFR_FVC; @@ -299,7 +304,11 @@ void pxa27x_cpu_pm_enter(suspend_state_t state) pxa_cpu_standby(); break; case PM_SUSPEND_MEM: - pxa27x_cpu_suspend(pwrmode, PLAT_PHYS_OFFSET - PAGE_OFFSET); + cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, pwrmode, + pxa27x_finish_suspend); +#ifndef CONFIG_IWMMXT + asm volatile("mar acc0, %Q0, %R0" : "=r" (acc0)); +#endif break; } } diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c index 8521d7d6f1da..220fd8c15dab 100644 --- a/arch/arm/mach-pxa/pxa3xx.c +++ b/arch/arm/mach-pxa/pxa3xx.c @@ -141,8 +141,13 @@ static void pxa3xx_cpu_pm_suspend(void) { volatile unsigned long *p = (volatile void *)0xc0000000; unsigned long saved_data = *p; +#ifndef CONFIG_IWMMXT + u64 acc0; - extern void pxa3xx_cpu_suspend(long); + asm volatile("mra %Q0, %R0, acc0" : "=r" (acc0)); +#endif + + extern void pxa3xx_finish_suspend(unsigned long); /* resuming from D2 requires the HSIO2/BOOT/TPM clocks enabled */ CKENA |= (1 << CKEN_BOOT) | (1 << CKEN_TPM); @@ -162,11 +167,15 @@ static void pxa3xx_cpu_pm_suspend(void) /* overwrite with the resume address */ *p = virt_to_phys(cpu_resume); - pxa3xx_cpu_suspend(PLAT_PHYS_OFFSET - PAGE_OFFSET); + cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, 0, pxa3xx_finish_suspend); *p = saved_data; AD3ER = 0; + +#ifndef CONFIG_IWMMXT + asm volatile("mar acc0, %Q0, %R0" : "=r" (acc0)); +#endif } static void pxa3xx_cpu_pm_enter(suspend_state_t state) diff --git a/arch/arm/mach-pxa/sleep.S b/arch/arm/mach-pxa/sleep.S index 3a67887e6dbd..1e544be9905d 100644 --- a/arch/arm/mach-pxa/sleep.S +++ b/arch/arm/mach-pxa/sleep.S @@ -24,22 +24,9 @@ #ifdef CONFIG_PXA3xx /* - * pxa3xx_cpu_suspend() - forces CPU into sleep state (S2D3C4) - * - * r0 = v:p offset + * pxa3xx_finish_suspend() - forces CPU into sleep state (S2D3C4) */ -ENTRY(pxa3xx_cpu_suspend) - -#ifndef CONFIG_IWMMXT - mra r2, r3, acc0 -#endif - stmfd sp!, {r2 - r12, lr} @ save registers on stack - mov r1, r0 - adr r3, BSYM(pxa3xx_finish_suspend) - bl cpu_suspend - b pxa_cpu_resume - -pxa3xx_finish_suspend: +ENTRY(pxa3xx_finish_suspend) mov r0, #0x06 @ S2D3C4 mode mcr p14, 0, r0, c7, c0, 0 @ enter sleep @@ -48,25 +35,13 @@ pxa3xx_finish_suspend: #ifdef CONFIG_PXA27x /* - * pxa27x_cpu_suspend() + * pxa27x_finish_suspend() * * Forces CPU into sleep state. * * r0 = value for PWRMODE M field for desired sleep state - * r1 = v:p offset */ -ENTRY(pxa27x_cpu_suspend) - -#ifndef CONFIG_IWMMXT - mra r2, r3, acc0 -#endif - stmfd sp!, {r2 - r12, lr} @ save registers on stack - mov r2, r0 @ save sleep mode - adr r3, BSYM(pxa27x_finish_suspend) - bl cpu_suspend - b pxa_cpu_resume - -pxa27x_finish_suspend: +ENTRY(pxa27x_finish_suspend) @ Put the processor to sleep @ (also workaround for sighting 28071) @@ -103,22 +78,14 @@ pxa27x_finish_suspend: #ifdef CONFIG_PXA25x /* - * pxa25x_cpu_suspend() + * pxa25x_finish_suspend() * * Forces CPU into sleep state. * * r0 = value for PWRMODE M field for desired sleep state - * r1 = v:p offset */ -ENTRY(pxa25x_cpu_suspend) - stmfd sp!, {r2 - r12, lr} @ save registers on stack - mov r2, r0 @ save sleep mode - adr r3, BSYM(pxa25x_finish_suspend) - bl cpu_suspend - b pxa_cpu_resume - -pxa25x_finish_suspend: +ENTRY(pxa25x_finish_suspend) @ prepare value for sleep mode mov r1, r0 @ sleep mode @@ -202,16 +169,3 @@ pxa_cpu_do_suspend: mcr p14, 0, r1, c7, c0, 0 @ PWRMODE 20: b 20b @ loop waiting for sleep - -/* - * pxa_cpu_resume() - * - * entry point from bootloader into kernel during resume - */ - .align 5 -pxa_cpu_resume: - ldmfd sp!, {r2, r3} -#ifndef CONFIG_IWMMXT - mar acc0, r2, r3 -#endif - ldmfd sp!, {r4 - r12, pc} @ return to caller diff --git a/arch/arm/mach-pxa/zeus.c b/arch/arm/mach-pxa/zeus.c index 00363c7ac182..28eb410ca779 100644 --- a/arch/arm/mach-pxa/zeus.c +++ b/arch/arm/mach-pxa/zeus.c @@ -676,7 +676,8 @@ static struct pxa2xx_udc_mach_info zeus_udc_info = { static void zeus_power_off(void) { local_irq_disable(); - pxa27x_cpu_suspend(PWRMODE_DEEPSLEEP, PLAT_PHYS_OFFSET - PAGE_OFFSET); + cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, PWRMODE_DEEPSLEEP, + pxa27x_finish_suspend); } #else #define zeus_power_off NULL