drm/i915: simplify setting of ddi_io_power_domain

Instead of the ever growing switch, just compute the ddi io power domain
based on the port number.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191011010907.103309-2-lucas.demarchi@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 46a7b2c..9ba794c 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4758,46 +4758,9 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
                intel_encoder->update_complete = intel_ddi_update_complete;
        }
 
-       switch (port) {
-       case PORT_A:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_A_IO;
-               break;
-       case PORT_B:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_B_IO;
-               break;
-       case PORT_C:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_C_IO;
-               break;
-       case PORT_D:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_D_IO;
-               break;
-       case PORT_E:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_E_IO;
-               break;
-       case PORT_F:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_F_IO;
-               break;
-       case PORT_G:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_G_IO;
-               break;
-       case PORT_H:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_H_IO;
-               break;
-       case PORT_I:
-               intel_dig_port->ddi_io_power_domain =
-                       POWER_DOMAIN_PORT_DDI_I_IO;
-               break;
-       default:
-               MISSING_CASE(port);
-       }
+       WARN_ON(port > PORT_I);
+       intel_dig_port->ddi_io_power_domain = POWER_DOMAIN_PORT_DDI_A_IO +
+                                             port - PORT_A;
 
        if (init_dp) {
                if (!intel_ddi_init_dp_connector(intel_dig_port))