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Add x86power command to get/set x86 power state

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Signed-off-by: Randall Spangler <rspangler@chromium.org>

BUG=chrome-os-partner:7528
TEST=x86power s0; should turn on all power rails (check via gpioget)

Change-Id: I284ac2104e02748ed69408873fbcebb9d54cdcff
This commit is contained in:
Randall Spangler
2012-01-26 13:45:32 -08:00
parent c5da68d224
commit d12a96a5ec
1 changed files with 40 additions and 9 deletions
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49
common/x86_power.c
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@@ -117,6 +117,7 @@ static int wait_in_signals(uint32_t want)
while ((in_signals & in_want) != in_want) {
if (task_wait_msg(DEFAULT_TIMEOUT) == (1 << TASK_ID_TIMER)) {
update_in_signals();
uart_printf("[x86 power timeout on input; "
"wanted 0x%04x, got 0x%04x]\n",
in_want, in_signals & in_want);
@@ -202,8 +203,8 @@ void x86_power_task(void)
x86_power_init();
while (1) {
uart_printf("[x86 power state %d = %s]\n", state,
state_names[state]);
uart_printf("[x86 power state %d = %s, in 0x%04x]\n",
state, state_names[state], in_signals);
switch (state) {
@@ -212,13 +213,6 @@ void x86_power_task(void)
state = X86_G3S5;
break;
case X86_S5:
/* For bringup, power on one second after boot */
/* TODO: remove post-bringup */
usleep(1000000);
state = X86_S5S0;
break;
case X86_G3S5:
/* Wait for the always-on rails to be good */
wait_in_signals(IN_PGOOD_ALWAYS_ON);
@@ -274,6 +268,14 @@ void x86_power_task(void)
state = X86_S0;
break;
case X86_S5:
#ifdef AUTO_POWER_UP
/* For bringup, power on one second after boot */
/* TODO: remove post-bringup */
usleep(1000000);
state = X86_S5S0;
break;
#endif
case X86_S0:
/* Steady state; wait for a message */
task_wait_msg(-1);
@@ -281,5 +283,34 @@ void x86_power_task(void)
}
}
/*****************************************************************************/
/* Console commnands */
static int command_x86power(int argc, char **argv)
{
enum x86_state current = state;
/* If no args provided, print current state */
if (argc < 2) {
uart_printf("Current X86 state: %d (%s)\n",
state, state_names[state]);
return EC_SUCCESS;
}
/* Get state to move to */
if (!strcasecmp(argv[1], "S0")) {
if (state == X86_S5)
state = X86_S5S0;
}
if (current == state)
uart_puts("State not changed.\n");
else {
uart_printf("New X86 state: %d (%s)\n",
state, state_names[state]);
/* Wake up the task if it's asleep */
task_send_msg(TASK_ID_X86POWER, TASK_ID_X86POWER, 0);
}
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(x86power, command_x86power);