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Shashank Sharma authored
This patch adds lspcon support in dp_dual_mode helper. lspcon is essentially a dp->hdmi dongle with dual personality. LS mode: It works as a passive dongle, by level shifting DP++ signals to HDMI signals, in LS mode. PCON mode: It works as a protocol converter active dongle in pcon mode, by converting DP++ outputs to HDMI 2.0 outputs. This patch adds support for lspcon detection and mode set switch operations, as a dp dual mode dongle. v2: Addressed review comments from Ville - add adaptor id for lspcon devices (0x08), use it to identify lspcon - change function names old: drm_lspcon_get_current_mode/drm_lspcon_change_mode new: drm_lspcon_get_mode/drm_lspcon_set_mode - change drm_lspcon_get_mode type to int, to match drm_dp_dual_mode_get_tmds_output - change 'err' to 'ret' to match the rest of the functions - remove pointless typecasting during call to dual_mode_read - fix the but while setting value of data, while writing lspcon mode - fix indentation - change mdelay(10) -> msleep(10) - return ETIMEDOUT instead of EFAULT, when lspcon mode change times out - Add an empty line to separate std regs macros and lspcon regs macros Indent bit definition v3: Addressed review comments from Rodrigo - change macro name from DP_DUAL_MODE_TYPE_LSPCON to DP_DUAL_MODE_TYPE_HAS_DPCD for better readability - change macro name from DP_DUAL_MODE_LSPCON_MODE_PCON to DP_DUAL_MODE_LSPCON_MODE_PCON for better readability - add comment for MCA specific offsets like 0x40 and 0x41 - remove DP_DUAL_MODE_REV_TYPE2 check while checking lspcon adapter id v4: Addressed review comments from Ville - Fixed indentation at few places - s/current_mode/mode - s/reqd_mode/mode - remove unnecessary void* cast - remove drm_edid.h from includes - Add a comment for _HAS_DPCD - Fix enum description, for lspcon_mode. v5: Rebase v6: Rebase Signed-off-by:
Shashank Sharma <shashank.sharma@intel.com> Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by:
Dave Airlie <airlied@gmail.com> Acked-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1476720277-16298-1-git-send-email-shashank.sharma@intel.com
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