drm/i915: add aux_ch_ctl_reg to struct intel_dp
This way we can remove some duplicated code and avoid more mistakes
and regressions with these registers in the future.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 00bc79f..0e2750c 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -328,29 +328,10 @@
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t ch_ctl = intel_dp->output_reg + 0x10;
+ uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg;
uint32_t status;
bool done;
- if (HAS_DDI(dev)) {
- switch (intel_dig_port->port) {
- case PORT_A:
- ch_ctl = DPA_AUX_CH_CTL;
- break;
- case PORT_B:
- ch_ctl = PCH_DPB_AUX_CH_CTL;
- break;
- case PORT_C:
- ch_ctl = PCH_DPC_AUX_CH_CTL;
- break;
- case PORT_D:
- ch_ctl = PCH_DPD_AUX_CH_CTL;
- break;
- default:
- BUG();
- }
- }
-
#define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0)
if (has_aux_irq)
done = wait_event_timeout(dev_priv->gmbus_wait_queue, C,
@@ -370,11 +351,10 @@
uint8_t *send, int send_bytes,
uint8_t *recv, int recv_size)
{
- uint32_t output_reg = intel_dp->output_reg;
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t ch_ctl = output_reg + 0x10;
+ uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg;
uint32_t ch_data = ch_ctl + 4;
int i, ret, recv_bytes;
uint32_t status;
@@ -388,29 +368,6 @@
*/
pm_qos_update_request(&dev_priv->pm_qos, 0);
- if (HAS_DDI(dev)) {
- switch (intel_dig_port->port) {
- case PORT_A:
- ch_ctl = DPA_AUX_CH_CTL;
- ch_data = DPA_AUX_CH_DATA1;
- break;
- case PORT_B:
- ch_ctl = PCH_DPB_AUX_CH_CTL;
- ch_data = PCH_DPB_AUX_CH_DATA1;
- break;
- case PORT_C:
- ch_ctl = PCH_DPC_AUX_CH_CTL;
- ch_data = PCH_DPC_AUX_CH_DATA1;
- break;
- case PORT_D:
- ch_ctl = PCH_DPD_AUX_CH_CTL;
- ch_data = PCH_DPD_AUX_CH_DATA1;
- break;
- default:
- BUG();
- }
- }
-
intel_dp_check_edp(intel_dp);
/* The clock divider is based off the hrawclk,
* and would like to run at 2MHz. So, take the
@@ -2832,6 +2789,25 @@
else
intel_connector->get_hw_state = intel_connector_get_hw_state;
+ intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10;
+ if (HAS_DDI(dev)) {
+ switch (intel_dig_port->port) {
+ case PORT_A:
+ intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL;
+ break;
+ case PORT_B:
+ intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL;
+ break;
+ case PORT_C:
+ intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL;
+ break;
+ case PORT_D:
+ intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL;
+ break;
+ default:
+ BUG();
+ }
+ }
/* Set up the DDC bus. */
switch (port) {