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poweroff: refine power off function to properly merge SB and MX differences (not many) - also correct missing IOMUX_TO_GPIO, and make sure we actually toggle the state (power off line responds to the rising edge)

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Matt Sealey
2011-02-22 23:09:22 -06:00
parent feed9168da
commit bdfdd37532
1 changed files with 10 additions and 2 deletions
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12
arch/arm/mach-mx5/mx51_efikamx_pmic.c
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@@ -17,6 +17,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/err.h>
@@ -514,15 +515,22 @@ int mx51_efikamx_reboot(void)
}
#define EFIKAMX_POWEROFF MX51_PIN_CSI2_VSYNC
#define EFIKAMX_USB_PHY_RESET MX51_PIN_EIM_D27
void mx51_efikamx_power_off(void)
{
/* hold USB phy to ransom */
/* TODO: put this back into _usb.c */
gpio_direction_output(IOMUX_TO_GPIO(EFIKAMX_USB_PHY_RESET), 0);
/* Set the power gate bits to power down */
pmic_write_reg(REG_POWER_MISC, (PWGT1SPIEN|PWGT2SPIEN), (PWGT1SPIEN|PWGT2SPIEN));
mxc_request_iomux(EFIKAMX_POWEROFF, IOMUX_CONFIG_GPIO);
mxc_request_iomux(IOMUX_TO_GPIO(EFIKAMX_POWEROFF), IOMUX_CONFIG_GPIO);
gpio_request(IOMUX_TO_GPIO(EFIKAMX_POWEROFF), "sys:poweroff");
gpio_direction_output(IOMUX_TO_GPIO(EFIKAMX_POWEROFF), 1);
gpio_direction_output(IOMUX_TO_GPIO(EFIKAMX_POWEROFF), 0);
msleep(10);
gpio_set_value(IOMUX_TO_GPIO(EFIKAMX_POWEROFF), 1);
/* just in case */
mxc_wd_reset();