u8 drm_dp_link_rate_to_bw_code(int link_rate)
{
- /* Spec says link_bw = link_rate / 0.27Gbps */
- return link_rate / 27000;
+ switch (link_rate) {
+ case 1000000:
+ return DP_LINK_BW_10;
+ case 1350000:
+ return DP_LINK_BW_13_5;
+ case 2000000:
+ return DP_LINK_BW_20;
+ default:
+ /* Spec says link_bw = link_rate / 0.27Gbps */
+ return link_rate / 27000;
+ }
}
EXPORT_SYMBOL(drm_dp_link_rate_to_bw_code);
int drm_dp_bw_code_to_link_rate(u8 link_bw)
{
- /* Spec says link_rate = link_bw * 0.27Gbps */
- return link_bw * 27000;
+ switch (link_bw) {
+ case DP_LINK_BW_10:
+ return 1000000;
+ case DP_LINK_BW_13_5:
+ return 1350000;
+ case DP_LINK_BW_20:
+ return 2000000;
+ default:
+ /* Spec says link_rate = link_bw * 0.27Gbps */
+ return link_bw * 27000;
+ }
}
EXPORT_SYMBOL(drm_dp_bw_code_to_link_rate);