diff options
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 25bf87390f53..c2d32f20e2fb 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -974,3 +974,159 @@ void drm_mode_connector_list_update(struct drm_connector *connector) } } EXPORT_SYMBOL(drm_mode_connector_list_update); + +/** + * drm_mode_parse_command_line_for_connector - parse command line for connector + * @mode_option - per connector mode option + * @connector - connector to parse line for + * + * This parses the connector specific then generic command lines for + * modes and options to configure the connector. + * + * This uses the same parameters as the fb modedb.c, except for extra + * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] + * + * enable/enable Digital/disable bit at the end + */ +bool drm_mode_parse_command_line_for_connector(const char *mode_option, + struct drm_connector *connector, + struct drm_cmdline_mode *mode) +{ + const char *name; + unsigned int namelen; + int res_specified = 0, bpp_specified = 0, refresh_specified = 0; + unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; + int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; + int i; + enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; + +#ifdef CONFIG_FB + if (!mode_option) + mode_option = fb_mode_option; +#endif + + if (!mode_option) { + mode->specified = false; + return false; + } + + name = mode_option; + namelen = strlen(name); + for (i = namelen-1; i >= 0; i--) { + switch (name[i]) { + case '@': + namelen = i; + if (!refresh_specified && !bpp_specified && + !yres_specified) { + refresh = simple_strtol(&name[i+1], NULL, 10); + refresh_specified = 1; + if (cvt || rb) + cvt = 0; + } else + goto done; + break; + case '-': + namelen = i; + if (!bpp_specified && !yres_specified) { + bpp = simple_strtol(&name[i+1], NULL, 10); + bpp_specified = 1; + if (cvt || rb) + cvt = 0; + } else + goto done; + break; + case 'x': + if (!yres_specified) { + yres = simple_strtol(&name[i+1], NULL, 10); + yres_specified = 1; + } else + goto done; + case '0' ... '9': + break; + case 'M': + if (!yres_specified) + cvt = 1; + break; + case 'R': + if (cvt) + rb = 1; + break; + case 'm': + if (!cvt) + margins = 1; + break; + case 'i': + if (!cvt) + interlace = 1; + break; + case 'e': + force = DRM_FORCE_ON; + break; + case 'D': + if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && + (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) + force = DRM_FORCE_ON; + else + force = DRM_FORCE_ON_DIGITAL; + break; + case 'd': + force = DRM_FORCE_OFF; + break; + default: + goto done; + } + } + if (i < 0 && yres_specified) { + xres = simple_strtol(name, NULL, 10); + res_specified = 1; + } +done: + if (res_specified) { + mode->specified = true; + mode->xres = xres; + mode->yres = yres; + } + + if (refresh_specified) { + mode->refresh_specified = true; + mode->refresh = refresh; + } + + if (bpp_specified) { + mode->bpp_specified = true; + mode->bpp = bpp; + } + mode->rb = rb ? true : false; + mode->cvt = cvt ? true : false; + mode->interlace = interlace ? true : false; + mode->force = force; + + return true; +} +EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector); + +struct drm_display_mode * +drm_mode_create_from_cmdline_mode(struct drm_device *dev, + struct drm_cmdline_mode *cmd) +{ + struct drm_display_mode *mode; + + if (cmd->cvt) + mode = drm_cvt_mode(dev, + cmd->xres, cmd->yres, + cmd->refresh_specified ? cmd->refresh : 60, + cmd->rb, cmd->interlace, + cmd->margins); + else + mode = drm_gtf_mode(dev, + cmd->xres, cmd->yres, + cmd->refresh_specified ? cmd->refresh : 60, + cmd->interlace, + cmd->margins); + if (!mode) + return NULL; + + drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); + return mode; +} +EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode); |