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peripherals: rework power low/high stuff, less tweaking of the real values, more documentation

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This commit is contained in:
Matt Sealey
2011-02-22 23:44:48 -06:00
parent ef1b600904
commit b2c48dc349
3 changed files with 38 additions and 17 deletions
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4
arch/arm/mach-mx5/mx51_efikamx.h
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@@ -83,4 +83,8 @@ extern int mx51_efikasb_battery_status(void);
extern int mx51_efikasb_battery_alarm(void);
extern int mx51_efikasb_ac_status(void);
/* assume everything is active low. Use functions for opposite behavior */
#define POWER_ON 0
#define POWER_OFF 1
#endif /* __MX51_EFIKAMX_H__ */

48
arch/arm/mach-mx5/mx51_efikamx_periph.c
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@@ -39,6 +39,11 @@
#define EFIKAMX_WIFI_RESET MX51_PIN_EIM_A16
#define EFIKAMX_BT_POWER MX51_PIN_EIM_A17
/* schematic confusion, these are defined twice */
#define EFIKASB_BT_POWER MX51_PIN_EIM_EB2
#define EFIKASB_WIFI_RESET MX51_PIN_EIM_D24
#define EFIKASB_WIFI_POWER MX51_PIN_EIM_EB3
struct mxc_iomux_pin_cfg __initdata mx51_efikamx_periph_iomux_pins[] = {
{ EFIKAMX_WIFI_POWER, IOMUX_CONFIG_GPIO, },
{ EFIKAMX_WIFI_RESET, IOMUX_CONFIG_GPIO, },
@@ -50,6 +55,12 @@ struct mxc_iomux_pin_cfg __initdata mx51_efikamx_periph_iomux_pins[] = {
#define EFIKASB_WWAN_SIM MX51_PIN_EIM_CS1
#define EFIKASB_CAMERA_POWER MX51_PIN_NANDF_CS0
#define SIM_INSERTED 0
#define SIM_MISSING 1
#define WWAN_WAKE 0
#define WWAN_SLEEP 1
static struct mxc_iomux_pin_cfg __initdata mx51_efikasb_periph_iomux_pins[] = {
{ EFIKASB_WWAN_WAKEUP, IOMUX_CONFIG_GPIO, },
{ EFIKASB_WWAN_POWER, IOMUX_CONFIG_GPIO, },
@@ -60,7 +71,8 @@ static struct mxc_iomux_pin_cfg __initdata mx51_efikasb_periph_iomux_pins[] = {
void mx51_efikamx_wifi_power(int state)
{
if (machine_is_mx51_efikamx())
/* active high on smartbook, active low on smarttop */
if (machine_is_mx51_efikasb())
state = !state;
gpio_set_value(IOMUX_TO_GPIO(EFIKAMX_WIFI_POWER), state);
}
@@ -75,44 +87,48 @@ void mx51_efikamx_wifi_reset(void)
void mx51_efikamx_bluetooth_power(int state)
{
gpio_set_value(IOMUX_TO_GPIO(EFIKAMX_BT_POWER), state);
/* BT_PWRON is active high in the schematic (CARD_GPO_OUT on Smarttop) */
gpio_set_value(IOMUX_TO_GPIO(EFIKAMX_BT_POWER), !state);
msleep(250);
}
void mx51_efikamx_camera_power(int state)
{
gpio_set_value(IOMUX_TO_GPIO(EFIKASB_CAMERA_POWER), !state);
/* CAM_POWER_ON is active low */
gpio_set_value(IOMUX_TO_GPIO(EFIKASB_CAMERA_POWER), state);
}
void mx51_efikamx_wwan_power(int state)
{
gpio_set_value(IOMUX_TO_GPIO(EFIKASB_WWAN_POWER), !state);
/* WWAN_PWRON active low */
gpio_set_value(IOMUX_TO_GPIO(EFIKASB_WWAN_POWER), state);
}
int mx51_efikamx_wwan_sim_status(void)
{
return !gpio_get_value(IOMUX_TO_GPIO(EFIKASB_WWAN_SIM));
/* SIM_CD active low */
return gpio_get_value(IOMUX_TO_GPIO(EFIKASB_WWAN_SIM));
}
static irqreturn_t mx51_efikamx_sim_handler(int irq, void *dev_id)
{
if(mx51_efikamx_wwan_sim_status()) {
int sim = mx51_efikamx_wwan_sim_status();
if(sim == SIM_INSERTED) {
set_irq_type(irq, IRQF_TRIGGER_RISING);
mx51_efikamx_wwan_power(POWER_ON)
} else {
set_irq_type(irq, IRQF_TRIGGER_FALLING);
mx51_efikamx_wwan_power(POWER_OFF)
}
DBG(("SIM card %s\n", (sim == SIM_INSERTED) ? "inserted" : "removed");
return IRQ_HANDLED;
}
int mx51_efikamx_wwan_wakeup_status(void)
{
/* active low */
return gpio_get_value(IOMUX_TO_GPIO(EFIKASB_WWAN_WAKEUP));
}
@@ -134,9 +150,13 @@ void __init mx51_efikamx_init_periph(void)
CONFIG_IOMUX(mx51_efikamx_periph_iomux_pins);
/* active high on smartbook, low on smarttop. power off to start */
gpio_free(IOMUX_TO_GPIO(EFIKAMX_WIFI_POWER));
gpio_request(IOMUX_TO_GPIO(EFIKAMX_WIFI_POWER), "wifi:power");
gpio_direction_output(IOMUX_TO_GPIO(EFIKAMX_WIFI_POWER), 0);
if (machine_is_mx51_efikasb())
gpio_direction_output(IOMUX_TO_GPIO(EFIKAMX_WIFI_POWER), 1);
else
gpio_direction_output(IOMUX_TO_GPIO(EFIKAMX_WIFI_POWER), 0);
gpio_free(IOMUX_TO_GPIO(EFIKAMX_WIFI_RESET));
gpio_request(IOMUX_TO_GPIO(EFIKAMX_WIFI_RESET), "wifi:reset");
@@ -158,7 +178,7 @@ void __init mx51_efikamx_init_periph(void)
gpio_direction_input(IOMUX_TO_GPIO(EFIKASB_WWAN_WAKEUP));
gpio_request(IOMUX_TO_GPIO(EFIKASB_WWAN_POWER), "wwan:power");
gpio_direction_output(IOMUX_TO_GPIO(EFIKASB_WWAN_POWER), 0);
gpio_direction_output(IOMUX_TO_GPIO(EFIKASB_WWAN_POWER), 1);
gpio_request(IOMUX_TO_GPIO(EFIKASB_WWAN_SIM), "wwan:simcard");
gpio_direction_input(IOMUX_TO_GPIO(EFIKASB_WWAN_SIM));

3
arch/arm/mach-mx5/mx51_efikamx_usb.c
View File

@@ -29,9 +29,6 @@
#include "mx51_efikamx.h"
#define POWER_ON 1
#define POWER_OFF 0
#define USB_PAD_CONFIG \
(PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH | PAD_CTL_100K_PU | \
PAD_CTL_PUE_KEEPER | PAD_CTL_PKE_ENABLE | PAD_CTL_HYS_ENABLE)