This patch was previously part of "[PATCH 05/10] drm/i915: Add debugfs interface for Displayport debug and compliance testing". Adds two support functions for handling Displayport configuration parameters that are used for compliance testing.
Signed-off-by: Todd Previte <[email protected]> --- drivers/gpu/drm/i915/i915_debugfs.c | 48 +++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index feae100..ce091c1 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -3694,6 +3694,54 @@ static const struct file_operations i915_display_crc_ctl_fops = { .write = display_crc_ctl_write }; +enum dp_config_param displayport_get_config_param_type(char *input_string) +{ + enum dp_config_param param_type = DP_CONFIG_PARAM_INVALID; + int i = 0; + + for (i = 0; i < DP_PARAMETER_COUNT; i++) { + if (strncmp(input_string, dp_conf_tokens[i], + strlen(dp_conf_tokens[i])) == 0) { + param_type = (enum dp_config_param) i; + break; + } + } + return param_type; +} + +int value_for_config_param(enum dp_config_param param, + char *input_string, + void *output_value) +{ + int status = 0; + unsigned int *out_ptr = (unsigned int *)output_value; + char *index = input_string; + + switch (param) { + case DP_CONFIG_PARAM_CONNECTOR: + output_value = (char *)index; + break; + case DP_CONFIG_PARAM_LINK_RATE: + case DP_CONFIG_PARAM_LANE_COUNT: + case DP_CONFIG_PARAM_VOLTAGE_SWING: + case DP_CONFIG_PARAM_PREEMPHASIS: + status = kstrtol(index, 16, (long *)out_ptr); + break; + case DP_CONFIG_PARAM_HRES: + case DP_CONFIG_PARAM_VRES: + case DP_CONFIG_PARAM_BPP: + status = kstrtol(index, 10, (long *)out_ptr); + break; + default: + /* Unhandled case */ + status = -EINVAL; + *out_ptr = 0; + break; + } + + return status; +} + static int displayport_config_ctl_open(struct inode *inode, struct file *file) { -- 1.9.1 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
