[PATCH 1/1] mx31moboard: Add poweroff support
From: Philippe Rétornaz <hidden>
Date: 2011-09-20 08:57:43
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
This patch add poweroff support on mx31moboard platform. A watchdog timeout is generated while enabling the watchdog reset IO to trigger a PMIC poweroff. Signed-off-by: Philippe R?tornaz <redacted> --- arch/arm/mach-imx/mach-mx31moboard.c | 17 +++++++++++++++++ arch/arm/plat-mxc/include/mach/iomux-mx3.h | 1 + 2 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c
index 2a43492..3d3d10f 100644
--- a/arch/arm/mach-imx/mach-mx31moboard.c
+++ b/arch/arm/mach-imx/mach-mx31moboard.c@@ -29,6 +29,9 @@ #include <linux/types.h> #include <linux/memblock.h> #include <linux/input.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/err.h> #include <linux/usb/otg.h> #include <linux/usb/ulpi.h>
@@ -509,6 +512,18 @@ err: } +static void mx31moboard_poweroff(void) +{ + struct clk *clk = clk_get_sys("imx2-wdt.0", NULL); + + if (!IS_ERR(clk)) + clk_enable(clk); + + mxc_iomux_mode(MX31_PIN_WATCHDOG_RST__WATCHDOG_RST); + + __raw_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR)); +} + static int mx31moboard_baseboard; core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
@@ -544,6 +559,8 @@ static void __init mx31moboard_init(void) moboard_usbh2_init(); + pm_power_off = mx31moboard_poweroff; + switch (mx31moboard_baseboard) { case MX31NOBOARD: break;
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx3.h b/arch/arm/plat-mxc/include/mach/iomux-mx3.h
index c92f0b1..63f22a0 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx3.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx3.h@@ -735,6 +735,7 @@ enum iomux_pins { #define MX31_PIN_KEY_COL5_KEY_COL5 IOMUX_MODE(MX31_PIN_KEY_COL5, IOMUX_CONFIG_FUNC) #define MX31_PIN_KEY_COL6_KEY_COL6 IOMUX_MODE(MX31_PIN_KEY_COL6, IOMUX_CONFIG_FUNC) #define MX31_PIN_KEY_COL7_KEY_COL7 IOMUX_MODE(MX31_PIN_KEY_COL7, IOMUX_CONFIG_FUNC) +#define MX31_PIN_WATCHDOG_RST__WATCHDOG_RST IOMUX_MODE(MX31_PIN_WATCHDOG_RST, IOMUX_CONFIG_FUNC) /*
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1.6.3.3