diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | tools/Makefile.am | 1 | ||||
| -rw-r--r-- | tools/intel_lid.c | 144 |
3 files changed, 146 insertions, 0 deletions
@@ -52,6 +52,7 @@ tools/intel_gpu_dump tools/intel_gpu_time tools/intel_gpu_top tools/intel_gtt +tools/intel_lid tools/intel_reg_dumper tools/intel_reg_write tools/intel_stepping diff --git a/tools/Makefile.am b/tools/Makefile.am index d6d63ab4..a825d5ba 100644 --- a/tools/Makefile.am +++ b/tools/Makefile.am @@ -5,6 +5,7 @@ bin_PROGRAMS = \ intel_gpu_top \ intel_gpu_time \ intel_gtt \ + intel_lid \ intel_stepping \ intel_reg_dumper \ intel_reg_write \ diff --git a/tools/intel_lid.c b/tools/intel_lid.c new file mode 100644 index 00000000..71eedb29 --- /dev/null +++ b/tools/intel_lid.c @@ -0,0 +1,144 @@ +/* + * Copyright © 2009 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: + * Zhenyu Wang <zhenyu.z.wang@intel.com> + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> +#include <pciaccess.h> +#include <err.h> +#include <fcntl.h> +#include <unistd.h> +#include <dirent.h> +#include <sys/stat.h> +#include <sys/types.h> + +#include "intel_gpu_tools.h" +#include "intel_reg.h" +#include "intel_bios.h" + +enum lid_status { + LID_UNKNOWN = -1, + LID_OPEN, + LID_CLOSE, +}; + +#define ACPI_BUTTON "/proc/acpi/button/" +#define ACPI_LID "/proc/acpi/button/lid/" + +static int i830_lvds_acpi_lid_state(void) +{ + int fd; + DIR *button_dir; + DIR *lid_dir; + struct dirent *lid_dent; + char *state_name; + char state[64]; + enum lid_status ret = LID_UNKNOWN; + + button_dir = opendir(ACPI_BUTTON); + /* If acpi button driver is not loaded, bypass ACPI check method */ + if (button_dir == NULL) + goto out; + closedir(button_dir); + + lid_dir = opendir(ACPI_LID); + + /* no acpi lid object found */ + if (lid_dir == NULL) + goto out; + + while (1) { + lid_dent = readdir(lid_dir); + if (lid_dent == NULL) { + /* no LID object */ + closedir(lid_dir); + goto out; + } + if (strcmp(lid_dent->d_name, ".") && + strcmp(lid_dent->d_name, "..")) { + break; + } + } + state_name = malloc(strlen(ACPI_LID) + strlen(lid_dent->d_name) + 7); + memset(state_name, 0, sizeof(state_name)); + strcat(state_name, ACPI_LID); + strcat(state_name, lid_dent->d_name); + strcat(state_name, "/state"); + + closedir(lid_dir); + + if ((fd = open(state_name, O_RDONLY)) == -1) { + free(state_name); + goto out; + } + free(state_name); + if (read(fd, state, 64) == -1) { + close(fd); + goto out; + } + close(fd); + if (strstr(state, "open")) + ret = LID_OPEN; + else if (strstr(state, "closed")) + ret = LID_CLOSE; + else /* "unsupported" */ + ret = LID_UNKNOWN; + +out: + return ret; +} + +int main(int argc, char **argv) +{ + int swf14, acpi_lid; + + intel_get_mmio(); + + while (1) { + swf14 = INREG(SWF14); + + printf("Intel LVDS Lid status:\n"); + printf("\tSWF14(0x%x) : %s\n", swf14, + swf14 & SWF14_LID_SWITCH_EN ? "close" : "open"); + + acpi_lid = i830_lvds_acpi_lid_state(); + switch (acpi_lid) { + case LID_UNKNOWN: + printf("\tACPI Lid state : unknown\n"); + break; + case LID_OPEN: + printf("\tACPI Lid state : open\n"); + break; + case LID_CLOSE: + printf("\tACPI Lid state : close\n"); + break; + } + sleep(2); + } + return 0; +} |