Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754880AbbBLCtu (ORCPT ); Wed, 11 Feb 2015 21:49:50 -0500 Received: from nasmtp01.atmel.com ([192.199.1.245]:15850 "EHLO DVREDG01.corp.atmel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753655AbbBLCtt (ORCPT ); Wed, 11 Feb 2015 21:49:49 -0500 From: Wenyou Yang To: , , CC: , , , , , , , , Subject: [PATCH 4/6] pm: at91: rename file name: pm_slowclock.S -->pm_suspend.S Date: Thu, 12 Feb 2015 10:48:05 +0800 Message-ID: <1423709285-8201-1-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1423709123-8033-1-git-send-email-wenyou.yang@atmel.com> References: <1423709123-8033-1-git-send-email-wenyou.yang@atmel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 15496 Lines: 688 Because the sram function is used for both suspend to memory and the suspend to standby mode, renaming is more elegant. Signed-off-by: Wenyou Yang Acked-by: Alexandre Belloni --- arch/arm/mach-at91/Makefile | 2 +- arch/arm/mach-at91/pm_slowclock.S | 321 ------------------------------------- arch/arm/mach-at91/pm_suspend.S | 321 +++++++++++++++++++++++++++++++++++++ 3 files changed, 322 insertions(+), 322 deletions(-) delete mode 100644 arch/arm/mach-at91/pm_slowclock.S create mode 100644 arch/arm/mach-at91/pm_suspend.S diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index 103c256..7df8c854 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -13,7 +13,7 @@ obj-$(CONFIG_SOC_SAMA5) += sama5.o # Power Management obj-$(CONFIG_PM) += pm.o -obj-$(CONFIG_PM) += pm_slowclock.o +obj-$(CONFIG_PM) += pm_suspend.o ifeq ($(CONFIG_PM_DEBUG),y) CFLAGS_pm.o += -DDEBUG diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S deleted file mode 100644 index bead23e..0000000 --- a/arch/arm/mach-at91/pm_slowclock.S +++ /dev/null @@ -1,321 +0,0 @@ -/* - * arch/arm/mach-at91/pm_slow_clock.S - * - * Copyright (C) 2006 Savin Zlobec - * - * AT91SAM9 support: - * Copyright (C) 2007 Anti Sullin -#include -#include -#include -#include "pm.h" - -#define SRAMC_SELF_FRESH_ACTIVE 0x01 -#define SRAMC_SELF_FRESH_EXIT 0x00 - -pmc .req r0 -tmp1 .req r4 -tmp2 .req r5 - -/* - * Wait until master clock is ready (after switching master clock source) - */ - .macro wait_mckrdy -1: ldr tmp1, [pmc, #AT91_PMC_SR] - tst tmp1, #AT91_PMC_MCKRDY - beq 1b - .endm - -/* - * Wait until master oscillator has stabilized. - */ - .macro wait_moscrdy -1: ldr tmp1, [pmc, #AT91_PMC_SR] - tst tmp1, #AT91_PMC_MOSCS - beq 1b - .endm - -/* - * Wait until PLLA has locked. - */ - .macro wait_pllalock -1: ldr tmp1, [pmc, #AT91_PMC_SR] - tst tmp1, #AT91_PMC_LOCKA - beq 1b - .endm - - .text - -/* void at91_slow_clock(void __iomem *pmc, void __iomem *sdramc, - * void __iomem *ramc1, int memctrl) - */ -ENTRY(at91_slow_clock) - /* Save registers on stack */ - stmfd sp!, {r4 - r12, lr} - - /* - * Register usage: - * R0 = Base address of AT91_PMC - * R1 = Base address of RAM Controller (SDRAM, DDRSDR, or AT91_SYS) - * R2 = Base address of second RAM Controller or 0 if not present - * R3 = Memory controller - * R4 = temporary register - * R5 = temporary register - */ - - /* Drain write buffer */ - mov tmp1, #0 - mcr p15, 0, tmp1, c7, c10, 4 - - str r0, .pmc_base - str r1, .sramc_base - str r2, .sramc1_base - - and r0, r3, #AT91_PM_MEMTYPE_MASK - str r0, .memtype - - lsr r0, r3, #AT91_PM_MODE_OFFSET - and r0, r0, #AT91_PM_MODE_MASK - str r0, .pm_mode - - /* Active the self-refresh mode */ - mov r0, #SRAMC_SELF_FRESH_ACTIVE - bl at91_sramc_self_refresh - - ldr r0, .pm_mode - tst r0, #AT91_PM_SLOW_CLOCK - beq skip_disable_main_clock - - ldr pmc, .pmc_base - - /* Save Master clock setting */ - ldr tmp1, [pmc, #AT91_PMC_MCKR] - str tmp1, .saved_mckr - - /* - * Set the Master clock source to slow clock - */ - bic tmp1, tmp1, #AT91_PMC_CSS - str tmp1, [pmc, #AT91_PMC_MCKR] - - wait_mckrdy - - /* Save PLLA setting and disable it */ - ldr tmp1, [pmc, #AT91_CKGR_PLLAR] - str tmp1, .saved_pllar - - mov tmp1, #AT91_PMC_PLLCOUNT - orr tmp1, tmp1, #(1 << 29) /* bit 29 always set */ - str tmp1, [pmc, #AT91_CKGR_PLLAR] - - /* Turn off the main oscillator */ - ldr tmp1, [pmc, #AT91_CKGR_MOR] - bic tmp1, tmp1, #AT91_PMC_MOSCEN - str tmp1, [pmc, #AT91_CKGR_MOR] - -skip_disable_main_clock: - ldr pmc, .pmc_base - - /* Wait for interrupt */ - mcr p15, 0, tmp1, c7, c0, 4 - - ldr r0, .pm_mode - tst r0, #AT91_PM_SLOW_CLOCK - beq skip_enable_main_clock - - ldr pmc, .pmc_base - - /* Turn on the main oscillator */ - ldr tmp1, [pmc, #AT91_CKGR_MOR] - orr tmp1, tmp1, #AT91_PMC_MOSCEN - str tmp1, [pmc, #AT91_CKGR_MOR] - - wait_moscrdy - - /* Restore PLLA setting */ - ldr tmp1, .saved_pllar - str tmp1, [pmc, #AT91_CKGR_PLLAR] - - tst tmp1, #(AT91_PMC_MUL & 0xff0000) - bne 3f - tst tmp1, #(AT91_PMC_MUL & ~0xff0000) - beq 4f -3: - wait_pllalock -4: - - /* - * Restore master clock setting - */ - ldr tmp1, .saved_mckr - str tmp1, [pmc, #AT91_PMC_MCKR] - - wait_mckrdy - -skip_enable_main_clock: - /* Exit the self-refresh mode */ - mov r0, #SRAMC_SELF_FRESH_EXIT - bl at91_sramc_self_refresh - - /* Restore registers, and return */ - ldmfd sp!, {r4 - r12, pc} -ENDPROC(at91_slow_clock) - -/* - * void at91_sramc_self_refresh(unsigned int is_active) - * - * @input param: - * @r0: 1 - active self-refresh mode - * 0 - exit self-refresh mode - * register usage: - * @r1: memory type - * @r2: base address of the sram controller - */ - -ENTRY(at91_sramc_self_refresh) - ldr r1, .memtype - ldr r2, .sramc_base - - cmp r1, #AT91_MEMCTRL_MC - bne ddrc_sf - - /* - * at91rm9200 Memory controller - */ - - /* - * For exiting the self-refresh mode, do nothing, - * automatically exit the self-refresh mode. - */ - tst r0, #SRAMC_SELF_FRESH_ACTIVE - beq exit_sramc_sf - - /* Active SDRAM self-refresh mode */ - mov r3, #1 - str r3, [r2, #AT91RM9200_SDRAMC_SRR] - b exit_sramc_sf - -ddrc_sf: - cmp r1, #AT91_MEMCTRL_DDRSDR - bne sdramc_sf - - /* - * DDR Memory controller - */ - tst r0, #SRAMC_SELF_FRESH_ACTIVE - beq ddrc_exit_sf - - /* LPDDR1 --> force DDR2 mode during self-refresh */ - ldr r3, [r2, #AT91_DDRSDRC_MDR] - str r3, .saved_sam9_mdr - bic r3, r3, #~AT91_DDRSDRC_MD - cmp r3, #AT91_DDRSDRC_MD_LOW_POWER_DDR - ldreq r3, [r2, #AT91_DDRSDRC_MDR] - biceq r3, r3, #AT91_DDRSDRC_MD - orreq r3, r3, #AT91_DDRSDRC_MD_DDR2 - streq r3, [r2, #AT91_DDRSDRC_MDR] - - /* Active DDRC self-refresh mode */ - ldr r3, [r2, #AT91_DDRSDRC_LPR] - str r3, .saved_sam9_lpr - bic r3, r3, #AT91_DDRSDRC_LPCB - orr r3, r3, #AT91_DDRSDRC_LPCB_SELF_REFRESH - str r3, [r2, #AT91_DDRSDRC_LPR] - - /* If using the 2nd ddr controller */ - ldr r2, .sramc1_base - cmp r2, #0 - beq no_2nd_ddrc - - ldr r3, [r2, #AT91_DDRSDRC_MDR] - str r3, .saved_sam9_mdr1 - bic r3, r3, #~AT91_DDRSDRC_MD - cmp r3, #AT91_DDRSDRC_MD_LOW_POWER_DDR - ldreq r3, [r2, #AT91_DDRSDRC_MDR] - biceq r3, r3, #AT91_DDRSDRC_MD - orreq r3, r3, #AT91_DDRSDRC_MD_DDR2 - streq r3, [r2, #AT91_DDRSDRC_MDR] - - ldr r3, [r2, #AT91_DDRSDRC_LPR] - str r3, .saved_sam9_lpr1 - bic r3, r3, #AT91_DDRSDRC_LPCB - orr r3, r3, #AT91_DDRSDRC_LPCB_SELF_REFRESH - - /* Active DDRC self-refresh mode */ - str r3, [r2, #AT91_DDRSDRC_LPR] -no_2nd_ddrc: - b exit_sramc_sf - -ddrc_exit_sf: - /* Restore MDR in case of LPDDR1 */ - ldr r3, .saved_sam9_mdr - str r3, [r2, #AT91_DDRSDRC_MDR] - /* Restore LPR on AT91 with DDRAM */ - ldr r3, .saved_sam9_lpr - str r3, [r2, #AT91_DDRSDRC_LPR] - - /* If using the 2nd ddr controller */ - ldr r2, .sramc1_base - cmp r2, #0 - ldrne r3, .saved_sam9_mdr1 - strne r3, [r2, #AT91_DDRSDRC_MDR] - ldrne r3, .saved_sam9_lpr1 - strne r3, [r2, #AT91_DDRSDRC_LPR] - - b exit_sramc_sf - - /* - * SDRAMC Memory controller - */ -sdramc_sf: - tst r0, #SRAMC_SELF_FRESH_ACTIVE - beq sdramc_exit_sf - - /* Active SDRAMC self-refresh mode */ - ldr r3, [r2, #AT91_SDRAMC_LPR] - str r3, .saved_sam9_lpr - - bic r3, r3, #AT91_SDRAMC_LPCB - orr r3, r3, #AT91_SDRAMC_LPCB_SELF_REFRESH - str r3, [r2, #AT91_SDRAMC_LPR] - -sdramc_exit_sf: - ldr r3, .saved_sam9_lpr - str r3, [r2, #AT91_SDRAMC_LPR] - -exit_sramc_sf: - mov pc, lr -ENDPROC(at91_sramc_self_refresh) - -.pmc_base: - .word 0 -.sramc_base: - .word 0 -.sramc1_base: - .word 0 -.memtype: - .word 0 -.pm_mode: - .word 0 -.saved_mckr: - .word 0 -.saved_pllar: - .word 0 -.saved_sam9_lpr: - .word 0 -.saved_sam9_lpr1: - .word 0 -.saved_sam9_mdr: - .word 0 -.saved_sam9_mdr1: - .word 0 - -ENTRY(at91_slow_clock_sz) - .word .-at91_slow_clock diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S new file mode 100644 index 0000000..f88d04c --- /dev/null +++ b/arch/arm/mach-at91/pm_suspend.S @@ -0,0 +1,321 @@ +/* + * arch/arm/mach-at91/pm_suspend.S + * + * Copyright (C) 2006 Savin Zlobec + * + * AT91SAM9 support: + * Copyright (C) 2007 Anti Sullin +#include +#include +#include +#include "pm.h" + +#define SRAMC_SELF_FRESH_ACTIVE 0x01 +#define SRAMC_SELF_FRESH_EXIT 0x00 + +pmc .req r0 +tmp1 .req r4 +tmp2 .req r5 + +/* + * Wait until master clock is ready (after switching master clock source) + */ + .macro wait_mckrdy +1: ldr tmp1, [pmc, #AT91_PMC_SR] + tst tmp1, #AT91_PMC_MCKRDY + beq 1b + .endm + +/* + * Wait until master oscillator has stabilized. + */ + .macro wait_moscrdy +1: ldr tmp1, [pmc, #AT91_PMC_SR] + tst tmp1, #AT91_PMC_MOSCS + beq 1b + .endm + +/* + * Wait until PLLA has locked. + */ + .macro wait_pllalock +1: ldr tmp1, [pmc, #AT91_PMC_SR] + tst tmp1, #AT91_PMC_LOCKA + beq 1b + .endm + + .text + +/* void at91_slow_clock(void __iomem *pmc, void __iomem *sdramc, + * void __iomem *ramc1, int memctrl) + */ +ENTRY(at91_slow_clock) + /* Save registers on stack */ + stmfd sp!, {r4 - r12, lr} + + /* + * Register usage: + * R0 = Base address of AT91_PMC + * R1 = Base address of RAM Controller (SDRAM, DDRSDR, or AT91_SYS) + * R2 = Base address of second RAM Controller or 0 if not present + * R3 = Memory controller + * R4 = temporary register + * R5 = temporary register + */ + + /* Drain write buffer */ + mov tmp1, #0 + mcr p15, 0, tmp1, c7, c10, 4 + + str r0, .pmc_base + str r1, .sramc_base + str r2, .sramc1_base + + and r0, r3, #AT91_PM_MEMTYPE_MASK + str r0, .memtype + + lsr r0, r3, #AT91_PM_MODE_OFFSET + and r0, r0, #AT91_PM_MODE_MASK + str r0, .pm_mode + + /* Active the self-refresh mode */ + mov r0, #SRAMC_SELF_FRESH_ACTIVE + bl at91_sramc_self_refresh + + ldr r0, .pm_mode + tst r0, #AT91_PM_SLOW_CLOCK + beq skip_disable_main_clock + + ldr pmc, .pmc_base + + /* Save Master clock setting */ + ldr tmp1, [pmc, #AT91_PMC_MCKR] + str tmp1, .saved_mckr + + /* + * Set the Master clock source to slow clock + */ + bic tmp1, tmp1, #AT91_PMC_CSS + str tmp1, [pmc, #AT91_PMC_MCKR] + + wait_mckrdy + + /* Save PLLA setting and disable it */ + ldr tmp1, [pmc, #AT91_CKGR_PLLAR] + str tmp1, .saved_pllar + + mov tmp1, #AT91_PMC_PLLCOUNT + orr tmp1, tmp1, #(1 << 29) /* bit 29 always set */ + str tmp1, [pmc, #AT91_CKGR_PLLAR] + + /* Turn off the main oscillator */ + ldr tmp1, [pmc, #AT91_CKGR_MOR] + bic tmp1, tmp1, #AT91_PMC_MOSCEN + str tmp1, [pmc, #AT91_CKGR_MOR] + +skip_disable_main_clock: + ldr pmc, .pmc_base + + /* Wait for interrupt */ + mcr p15, 0, tmp1, c7, c0, 4 + + ldr r0, .pm_mode + tst r0, #AT91_PM_SLOW_CLOCK + beq skip_enable_main_clock + + ldr pmc, .pmc_base + + /* Turn on the main oscillator */ + ldr tmp1, [pmc, #AT91_CKGR_MOR] + orr tmp1, tmp1, #AT91_PMC_MOSCEN + str tmp1, [pmc, #AT91_CKGR_MOR] + + wait_moscrdy + + /* Restore PLLA setting */ + ldr tmp1, .saved_pllar + str tmp1, [pmc, #AT91_CKGR_PLLAR] + + tst tmp1, #(AT91_PMC_MUL & 0xff0000) + bne 3f + tst tmp1, #(AT91_PMC_MUL & ~0xff0000) + beq 4f +3: + wait_pllalock +4: + + /* + * Restore master clock setting + */ + ldr tmp1, .saved_mckr + str tmp1, [pmc, #AT91_PMC_MCKR] + + wait_mckrdy + +skip_enable_main_clock: + /* Exit the self-refresh mode */ + mov r0, #SRAMC_SELF_FRESH_EXIT + bl at91_sramc_self_refresh + + /* Restore registers, and return */ + ldmfd sp!, {r4 - r12, pc} +ENDPROC(at91_slow_clock) + +/* + * void at91_sramc_self_refresh(unsigned int is_active) + * + * @input param: + * @r0: 1 - active self-refresh mode + * 0 - exit self-refresh mode + * register usage: + * @r1: memory type + * @r2: base address of the sram controller + */ + +ENTRY(at91_sramc_self_refresh) + ldr r1, .memtype + ldr r2, .sramc_base + + cmp r1, #AT91_MEMCTRL_MC + bne ddrc_sf + + /* + * at91rm9200 Memory controller + */ + + /* + * For exiting the self-refresh mode, do nothing, + * automatically exit the self-refresh mode. + */ + tst r0, #SRAMC_SELF_FRESH_ACTIVE + beq exit_sramc_sf + + /* Active SDRAM self-refresh mode */ + mov r3, #1 + str r3, [r2, #AT91RM9200_SDRAMC_SRR] + b exit_sramc_sf + +ddrc_sf: + cmp r1, #AT91_MEMCTRL_DDRSDR + bne sdramc_sf + + /* + * DDR Memory controller + */ + tst r0, #SRAMC_SELF_FRESH_ACTIVE + beq ddrc_exit_sf + + /* LPDDR1 --> force DDR2 mode during self-refresh */ + ldr r3, [r2, #AT91_DDRSDRC_MDR] + str r3, .saved_sam9_mdr + bic r3, r3, #~AT91_DDRSDRC_MD + cmp r3, #AT91_DDRSDRC_MD_LOW_POWER_DDR + ldreq r3, [r2, #AT91_DDRSDRC_MDR] + biceq r3, r3, #AT91_DDRSDRC_MD + orreq r3, r3, #AT91_DDRSDRC_MD_DDR2 + streq r3, [r2, #AT91_DDRSDRC_MDR] + + /* Active DDRC self-refresh mode */ + ldr r3, [r2, #AT91_DDRSDRC_LPR] + str r3, .saved_sam9_lpr + bic r3, r3, #AT91_DDRSDRC_LPCB + orr r3, r3, #AT91_DDRSDRC_LPCB_SELF_REFRESH + str r3, [r2, #AT91_DDRSDRC_LPR] + + /* If using the 2nd ddr controller */ + ldr r2, .sramc1_base + cmp r2, #0 + beq no_2nd_ddrc + + ldr r3, [r2, #AT91_DDRSDRC_MDR] + str r3, .saved_sam9_mdr1 + bic r3, r3, #~AT91_DDRSDRC_MD + cmp r3, #AT91_DDRSDRC_MD_LOW_POWER_DDR + ldreq r3, [r2, #AT91_DDRSDRC_MDR] + biceq r3, r3, #AT91_DDRSDRC_MD + orreq r3, r3, #AT91_DDRSDRC_MD_DDR2 + streq r3, [r2, #AT91_DDRSDRC_MDR] + + ldr r3, [r2, #AT91_DDRSDRC_LPR] + str r3, .saved_sam9_lpr1 + bic r3, r3, #AT91_DDRSDRC_LPCB + orr r3, r3, #AT91_DDRSDRC_LPCB_SELF_REFRESH + + /* Active DDRC self-refresh mode */ + str r3, [r2, #AT91_DDRSDRC_LPR] +no_2nd_ddrc: + b exit_sramc_sf + +ddrc_exit_sf: + /* Restore MDR in case of LPDDR1 */ + ldr r3, .saved_sam9_mdr + str r3, [r2, #AT91_DDRSDRC_MDR] + /* Restore LPR on AT91 with DDRAM */ + ldr r3, .saved_sam9_lpr + str r3, [r2, #AT91_DDRSDRC_LPR] + + /* If using the 2nd ddr controller */ + ldr r2, .sramc1_base + cmp r2, #0 + ldrne r3, .saved_sam9_mdr1 + strne r3, [r2, #AT91_DDRSDRC_MDR] + ldrne r3, .saved_sam9_lpr1 + strne r3, [r2, #AT91_DDRSDRC_LPR] + + b exit_sramc_sf + + /* + * SDRAMC Memory controller + */ +sdramc_sf: + tst r0, #SRAMC_SELF_FRESH_ACTIVE + beq sdramc_exit_sf + + /* Active SDRAMC self-refresh mode */ + ldr r3, [r2, #AT91_SDRAMC_LPR] + str r3, .saved_sam9_lpr + + bic r3, r3, #AT91_SDRAMC_LPCB + orr r3, r3, #AT91_SDRAMC_LPCB_SELF_REFRESH + str r3, [r2, #AT91_SDRAMC_LPR] + +sdramc_exit_sf: + ldr r3, .saved_sam9_lpr + str r3, [r2, #AT91_SDRAMC_LPR] + +exit_sramc_sf: + mov pc, lr +ENDPROC(at91_sramc_self_refresh) + +.pmc_base: + .word 0 +.sramc_base: + .word 0 +.sramc1_base: + .word 0 +.memtype: + .word 0 +.pm_mode: + .word 0 +.saved_mckr: + .word 0 +.saved_pllar: + .word 0 +.saved_sam9_lpr: + .word 0 +.saved_sam9_lpr1: + .word 0 +.saved_sam9_mdr: + .word 0 +.saved_sam9_mdr1: + .word 0 + +ENTRY(at91_slow_clock_sz) + .word .-at91_slow_clock -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/