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cr50: add command to enable ccd indefinitely

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For FAFT or debugging purposes we may want to leave ccd enabled no
matter what the voltages on the CC lines are. This change adds a 'ccd
force enable' which will keep ccd enabled until 'ccd disable' is run.

BUG=chrome-os-partner:61701
BRANCH=none
TEST=Plug in suzyq. Run 'ccd force enable'. Disconnect suzyq and on the
cr50 uart run 'ccd' to verify ccd is still enabled. Make sure the other
ccd commands work ok.

Change-Id: Ia7087ade3070a1320a74b985f4699533ecc396ef
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/427346
Commit-Ready: Dan Shi <dshi@google.com>
Reviewed-by: Nick Sanders <nsanders@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
This commit is contained in:
Mary Ruthven
2017-01-11 16:30:25 -08:00
committed by chrome-bot
parent 8bbb0f2472
commit 36093bee5f
1 changed files with 40 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
board/cr50/rdd.c
View File

@@ -19,6 +19,7 @@
#define CPRINTS(format, args...) cprints(CC_USB, format, ## args)
static int keep_ccd_enabled;
static int ec_uart_enabled, enable_usb_wakeup;
static int usb_is_initialized;
@@ -108,6 +109,9 @@ void uartn_tx_disconnect(int uart)
void rdd_attached(void)
{
if (ccd_is_enabled())
return;
/* Indicate case-closed debug mode (active low) */
gpio_set_level(GPIO_CCD_MODE_L, 0);
@@ -121,6 +125,9 @@ void rdd_attached(void)
void rdd_detached(void)
{
if (keep_ccd_enabled)
return;
/* Disconnect from AP and EC UART TX peripheral from gpios */
uartn_tx_disconnect(UART_EC);
uartn_tx_disconnect(UART_AP);
@@ -187,15 +194,21 @@ void enable_ap_usb(void)
}
DECLARE_HOOK(HOOK_CHIPSET_RESUME, enable_ap_usb, HOOK_PRIO_DEFAULT);
static void clear_keepalive(void)
{
keep_ccd_enabled = 0;
ccprintf("Cleared CCD keepalive\n");
}
static int command_ccd(int argc, char **argv)
{
int val;
if (argc > 1) {
if (!strcasecmp("uart", argv[1]) && argc > 2) {
if (!parse_bool(argv[2], &val))
return EC_ERROR_PARAM2;
if (!parse_bool(argv[argc - 1], &val))
return argc == 2 ? EC_ERROR_PARAM1 : EC_ERROR_PARAM2;
if (!strcasecmp("uart", argv[1])) {
if (val) {
ec_uart_enabled = 1;
uartn_tx_connect(UART_EC);
@@ -203,37 +216,46 @@ static int command_ccd(int argc, char **argv)
ec_uart_enabled = 0;
uartn_tx_disconnect(UART_EC);
}
} else if (!strcasecmp("i2c", argv[1]) && argc > 2) {
if (!parse_bool(argv[2], &val))
return EC_ERROR_PARAM2;
if (val) {
} else if (!strcasecmp("i2c", argv[1])) {
if (val)
usb_i2c_board_enable();
ccprintf("CCD: i2c enabled\n");
} else {
else
usb_i2c_board_disable(0);
ccprintf("CCD: i2c disabled\n");
} else if (!strcasecmp("keepalive", argv[1])) {
if (val) {
/* Make sure ccd is enabled */
if (!ccd_is_enabled())
rdd_attached();
keep_ccd_enabled = 1;
ccprintf("Warning CCD will remain "
"enabled until it is "
"explicitly disabled.\n");
} else {
clear_keepalive();
}
} else if (argc == 2) {
if (!parse_bool(argv[1], &val))
return EC_ERROR_PARAM1;
if (val)
if (val) {
rdd_attached();
else
} else {
if (keep_ccd_enabled)
clear_keepalive();
rdd_detached();
}
} else
return EC_ERROR_PARAM1;
}
ccprintf("CCD: %s\nAP UART: %s\nEC UART: %s\n",
ccprintf("CCD:%14s\nAP UART: %s\nEC UART: %s\n",
keep_ccd_enabled ? "forced enable" :
ccd_is_enabled() ? " enabled" : "disabled",
uartn_enabled(UART_AP) ? " enabled" : "disabled",
uartn_enabled(UART_EC) ? " enabled" : "disabled");
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(ccd, command_ccd,
"[uart|i2c] [<BOOLEAN>]",
"[uart|i2c|keepalive] [<BOOLEAN>]",
"Get/set the case closed debug state");
static int command_sys_rst(int argc, char **argv)