From 3a6c994f3896d66e617acdf9bb58ffc4def08b71 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 16 Jan 2021 14:52:28 -0700 Subject: cros_ec: Add support for switches On x86 platforms the EC provides a way to read 'switches', which are on/off values determined by the EC. Add a new driver method for this and implement it for LPC. Signed-off-by: Simon Glass --- cmd/cros_ec.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'cmd') diff --git a/cmd/cros_ec.c b/cmd/cros_ec.c index 77656a2308c..a222c75c17c 100644 --- a/cmd/cros_ec.c +++ b/cmd/cros_ec.c @@ -162,6 +162,41 @@ static int do_show_features(struct udevice *dev) return 0; } +static const char *const switch_name[8] = { + "lid open", + "power button pressed", + "write-protect disabled", + NULL, + "dedicated recovery", + NULL, + NULL, + NULL, +}; + +static int do_show_switches(struct udevice *dev) +{ + uint switches; + int ret; + uint i; + + ret = cros_ec_get_switches(dev); + if (ret < 0) + return log_msg_ret("get", ret); + switches = ret; + for (i = 0; i < ARRAY_SIZE(switch_name); i++) { + uint mask = 1 << i; + + if (switches & mask) { + if (switch_name[i]) + printf("%s\n", switch_name[i]); + else + printf("unknown %02x\n", mask); + } + } + + return 0; +} + static int do_cros_ec(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { @@ -211,6 +246,11 @@ static int do_cros_ec(struct cmd_tbl *cmdtp, int flag, int argc, } else if (!strcmp("features", cmd)) { ret = do_show_features(dev); + if (ret) + printf("Error: %d\n", ret); + } else if (!strcmp("switches", cmd)) { + ret = do_show_switches(dev); + if (ret) printf("Error: %d\n", ret); } else if (0 == strcmp("curimage", cmd)) { @@ -453,6 +493,7 @@ U_BOOT_CMD( "crosec id Read CROS-EC ID\n" "crosec info Read CROS-EC info\n" "crosec features Read CROS-EC features\n" + "crosec switches Read CROS-EC switches\n" "crosec curimage Read CROS-EC current image\n" "crosec hash Read CROS-EC hash\n" "crosec reboot [rw | ro | cold] Reboot CROS-EC\n" -- cgit v1.3.1