diff options
| author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-08-11 11:26:50 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-08-11 11:53:47 -0700 |
| commit | f761bef2f341015eb1ad8a8840187a989c4893f2 (patch) | |
| tree | a7be0e62a4da5e1906e57dedba942c5af1d01a2d /drivers/gpu/drm/i915/intel_hotplug.c | |
| parent | 256cfdde42c0f8f74d417875f71ea864e686917b (diff) | |
drm/i915: Introduce intel_hpd_pin function.
The idea is to have an unique place to decide the pin-port
per platform.
So let's create this function now without any functional
change. Just adding together code from hdmi and dp together.
v2: Add missing pin for port A.
v3: Fix typo on subject.
Avoid behaviour change so add WARN_ON and return
if port A on HDMI. (by DK).
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170811182650.14327-2-rodrigo.vivi@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_hotplug.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_hotplug.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_hotplug.c b/drivers/gpu/drm/i915/intel_hotplug.c index d442d9f012d6..875d5d218d5c 100644 --- a/drivers/gpu/drm/i915/intel_hotplug.c +++ b/drivers/gpu/drm/i915/intel_hotplug.c @@ -101,6 +101,32 @@ enum port intel_hpd_pin_to_port(enum hpd_pin pin) } } +/** + * intel_hpd_pin - return pin hard associated with certain port. + * @port: the hpd port to get associated pin + * + * Return pin that is associatade with @port and HDP_NONE if no pin is + * hard associated with that @port. + */ +enum hpd_pin intel_hpd_pin(enum port port) +{ + switch (port) { + case PORT_A: + return HPD_PORT_A; + case PORT_B: + return HPD_PORT_B; + case PORT_C: + return HPD_PORT_C; + case PORT_D: + return HPD_PORT_D; + case PORT_E: + return HPD_PORT_E; + default: + MISSING_CASE(port); + return HPD_NONE; + } +} + #define HPD_STORM_DETECT_PERIOD 1000 #define HPD_STORM_REENABLE_DELAY (2 * 60 * 1000) |