anatop module have sereval configurations for user to reduce the power consumption in suspend, provide suspend/resume interface for further use and enable fet_odrive to reduce CORE LDO leakage during suspend.
Signed-off-by: Anson Huang <b20...@freescale.com> --- arch/arm/mach-imx/Kconfig | 4 ++++ arch/arm/mach-imx/Makefile | 1 + arch/arm/mach-imx/anatop.c | 50 ++++++++++++++++++++++++++++++++++++++++ arch/arm/mach-imx/common.h | 3 +++ arch/arm/mach-imx/mach-imx6q.c | 1 + arch/arm/mach-imx/pm-imx6q.c | 2 ++ 6 files changed, 61 insertions(+) create mode 100644 arch/arm/mach-imx/anatop.c diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 4c9c6f9..7abaa6e 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -74,6 +74,9 @@ config HAVE_IMX_MMDC config HAVE_IMX_SRC def_bool y if SMP +config HAVE_IMX_ANATOP + bool + config IMX_HAVE_IOMUX_V1 bool @@ -816,6 +819,7 @@ config SOC_IMX6Q select HAVE_IMX_GPC select HAVE_IMX_MMDC select HAVE_IMX_SRC + select HAVE_IMX_ANATOP select HAVE_SMP select MFD_SYSCON select PINCTRL diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index c4ce090..f4badaa 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -95,6 +95,7 @@ obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o obj-$(CONFIG_HAVE_IMX_SRC) += src.o +obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o AFLAGS_headsmp.o :=-Wa,-march=armv7-a obj-$(CONFIG_SMP) += headsmp.o platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c new file mode 100644 index 0000000..8f6ab27 --- /dev/null +++ b/arch/arm/mach-imx/anatop.c @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2013 Freescale Semiconductor, Inc. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/err.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> + +#define REG_SET 0x4 +#define REG_CLR 0x8 +#define ANA_REG_CORE 0x140 + +#define BM_ANADIG_REG_CORE_FET_ODRIVE 0x20000000 + +static struct regmap *anatop; + +void imx_anatop_enable_fet_odrive(bool enable) +{ + regmap_write(anatop, ANA_REG_CORE + (enable ? + REG_SET : REG_CLR), BM_ANADIG_REG_CORE_FET_ODRIVE); +} + +void imx_anatop_pre_suspend(void) +{ + imx_anatop_enable_fet_odrive(true); +} + +void imx_anatop_post_resume(void) +{ + imx_anatop_enable_fet_odrive(false); +} + +void __init imx_anatop_init(void) +{ + anatop = syscon_regmap_lookup_by_compatible("fsl,imx6q-anatop"); + if (IS_ERR(anatop)) { + pr_err("%s: failed to find imx6q-anatop regmap!\n", __func__); + return; + } +} diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index 5a800bf..004c2b3 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -129,6 +129,9 @@ extern void imx_src_prepare_restart(void); extern void imx_gpc_init(void); extern void imx_gpc_pre_suspend(void); extern void imx_gpc_post_resume(void); +extern void imx_anatop_init(void); +extern void imx_anatop_pre_suspend(void); +extern void imx_anatop_post_resume(void); extern int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode); extern void imx6q_set_chicken_bit(void); diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 9ffd103..aa867db 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -197,6 +197,7 @@ static void __init imx6q_init_machine(void) of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + imx_anatop_init(); imx6q_pm_init(); imx6q_usb_init(); imx6q_1588_init(); diff --git a/arch/arm/mach-imx/pm-imx6q.c b/arch/arm/mach-imx/pm-imx6q.c index 5faba7a..05b26cd 100644 --- a/arch/arm/mach-imx/pm-imx6q.c +++ b/arch/arm/mach-imx/pm-imx6q.c @@ -34,10 +34,12 @@ static int imx6q_pm_enter(suspend_state_t state) case PM_SUSPEND_MEM: imx6q_set_lpm(STOP_POWER_OFF); imx_gpc_pre_suspend(); + imx_anatop_pre_suspend(); imx_set_cpu_jump(0, v7_cpu_resume); /* Zzz ... */ cpu_suspend(0, imx6q_suspend_finish); imx_smp_prepare(); + imx_anatop_post_resume(); imx_gpc_post_resume(); imx6q_set_lpm(WAIT_CLOCKED); break; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/