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authorAnson Huang <b20788@freescale.com>2013-03-20 19:39:42 -0400
committerShawn Guo <shawn.guo@linaro.org>2013-04-12 19:01:42 +0800
commite95dddb34c896f33e89f97365491e7932f89a0c0 (patch)
tree1c8a95766fb00b1120882836ea6e8822b6101c77 /arch/arm
parentcb872cacb2ef57ade6bb0ff41e18b9508a0e073e (diff)
ARM: imx: enable anatop suspend/resume
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. As we have a common anatop file, remove all the operations of anatop module in other files, use anatop interfaces to do that. Signed-off-by: Anson Huang <b20788@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-imx/Kconfig4
-rw-r--r--arch/arm/mach-imx/Makefile1
-rw-r--r--arch/arm/mach-imx/anatop.c74
-rw-r--r--arch/arm/mach-imx/common.h7
-rw-r--r--arch/arm/mach-imx/mach-imx6q.c48
-rw-r--r--arch/arm/mach-imx/pm-imx6q.c4
6 files changed, 94 insertions, 44 deletions
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 6575e4ebe26..f694074f230 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -65,6 +65,9 @@ config IRAM_ALLOC
bool
select GENERIC_ALLOCATOR
+config HAVE_IMX_ANATOP
+ bool
+
config HAVE_IMX_GPC
bool
@@ -795,6 +798,7 @@ config SOC_IMX6Q
select CPU_V7
select HAVE_ARM_SCU
select HAVE_CAN_FLEXCAN if CAN
+ select HAVE_IMX_ANATOP
select HAVE_IMX_GPC
select HAVE_IMX_MMDC
select HAVE_IMX_SRC
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 23555b0c08a..b16eb39b9f5 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -91,6 +91,7 @@ obj-$(CONFIG_MACH_EUKREA_CPUIMX35SD) += mach-cpuimx35.o
obj-$(CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD) += eukrea_mbimxsd35-baseboard.o
obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o
+obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
obj-$(CONFIG_HAVE_IMX_SRC) += src.o
diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c
new file mode 100644
index 00000000000..b396b92526d
--- /dev/null
+++ b/arch/arm/mach-imx/anatop.c
@@ -0,0 +1,74 @@
+/*
+ * 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 ANADIG_REG_CORE 0x140
+#define ANADIG_USB1_CHRG_DETECT 0x1b0
+#define ANADIG_USB2_CHRG_DETECT 0x210
+#define ANADIG_DIGPROG 0x260
+
+#define BM_ANADIG_REG_CORE_FET_ODRIVE 0x20000000
+#define BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B 0x80000
+#define BM_ANADIG_USB_CHRG_DETECT_EN_B 0x100000
+
+static struct regmap *anatop;
+
+static void imx_anatop_enable_fet_odrive(bool enable)
+{
+ regmap_write(anatop, ANADIG_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 imx_anatop_usb_chrg_detect_disable(void)
+{
+ regmap_write(anatop, ANADIG_USB1_CHRG_DETECT,
+ BM_ANADIG_USB_CHRG_DETECT_EN_B
+ | BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
+ regmap_write(anatop, ANADIG_USB2_CHRG_DETECT,
+ BM_ANADIG_USB_CHRG_DETECT_EN_B |
+ BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
+}
+
+u32 imx_anatop_get_digprog(void)
+{
+ u32 val;
+
+ regmap_read(anatop, ANADIG_DIGPROG, &val);
+ return val;
+}
+
+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 9fea2522d7a..d557bf38328 100644
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -1,5 +1,5 @@
/*
- * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2004-2013 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
@@ -128,6 +128,11 @@ 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 void imx_anatop_usb_chrg_detect_disable(void);
+extern u32 imx_anatop_get_digprog(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 9ffd103b27e..31aee4d5fcd 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011-2013 Freescale Semiconductor, Inc.
* Copyright 2011 Linaro Ltd.
*
* The code contained herein is licensed under the GNU General Public
@@ -39,27 +39,12 @@
#include "cpuidle.h"
#include "hardware.h"
-#define IMX6Q_ANALOG_DIGPROG 0x260
-
static int imx6q_revision(void)
{
- struct device_node *np;
- void __iomem *base;
static u32 rev;
- if (!rev) {
- np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-anatop");
- if (!np)
- return IMX_CHIP_REVISION_UNKNOWN;
- base = of_iomap(np, 0);
- if (!base) {
- of_node_put(np);
- return IMX_CHIP_REVISION_UNKNOWN;
- }
- rev = readl_relaxed(base + IMX6Q_ANALOG_DIGPROG);
- iounmap(base);
- of_node_put(np);
- }
+ if (!rev)
+ rev = imx_anatop_get_digprog();
switch (rev & 0xff) {
case 0:
@@ -165,29 +150,7 @@ static void __init imx6q_1588_init(void)
}
static void __init imx6q_usb_init(void)
{
- struct regmap *anatop;
-
-#define HW_ANADIG_USB1_CHRG_DETECT 0x000001b0
-#define HW_ANADIG_USB2_CHRG_DETECT 0x00000210
-
-#define BM_ANADIG_USB_CHRG_DETECT_EN_B 0x00100000
-#define BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B 0x00080000
-
- anatop = syscon_regmap_lookup_by_compatible("fsl,imx6q-anatop");
- if (!IS_ERR(anatop)) {
- /*
- * The external charger detector needs to be disabled,
- * or the signal at DP will be poor
- */
- regmap_write(anatop, HW_ANADIG_USB1_CHRG_DETECT,
- BM_ANADIG_USB_CHRG_DETECT_EN_B
- | BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
- regmap_write(anatop, HW_ANADIG_USB2_CHRG_DETECT,
- BM_ANADIG_USB_CHRG_DETECT_EN_B |
- BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
- } else {
- pr_warn("failed to find fsl,imx6q-anatop regmap\n");
- }
+ imx_anatop_usb_chrg_detect_disable();
}
static void __init imx6q_init_machine(void)
@@ -197,9 +160,11 @@ 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();
+ imx_print_silicon_rev("i.MX6Q", imx6q_revision());
}
#define OCOTP_CFG3 0x440
@@ -293,7 +258,6 @@ static void __init imx6q_timer_init(void)
{
mx6q_clocks_init();
twd_local_timer_of_register();
- imx_print_silicon_rev("i.MX6Q", imx6q_revision());
}
static const char *imx6q_dt_compat[] __initdata = {
diff --git a/arch/arm/mach-imx/pm-imx6q.c b/arch/arm/mach-imx/pm-imx6q.c
index 5faba7a3c95..204942749e2 100644
--- a/arch/arm/mach-imx/pm-imx6q.c
+++ b/arch/arm/mach-imx/pm-imx6q.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011-2013 Freescale Semiconductor, Inc.
* Copyright 2011 Linaro Ltd.
*
* The code contained herein is licensed under the GNU General Public
@@ -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;