From: Shashank Sharma <[email protected]>
Pick appropriate port control register (BXT or VLV), based on device.
Get the current hw state wrt Mipi port.
v2: Rebased on latest drm nightly branch.
v3: Removed the GET_DSI_PORT_CTRL Macro for consistency with earlier
implementations as per Jani's suggestion.
Signed-off-by: Shashank Sharma <[email protected]>
Signed-off-by: Uma Shankar <[email protected]>
---
drivers/gpu/drm/i915/intel_dsi.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 110a895..001569b 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -648,7 +648,7 @@ static bool intel_dsi_get_hw_state(struct intel_encoder
*encoder,
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
struct drm_device *dev = encoder->base.dev;
enum intel_display_power_domain power_domain;
- u32 dpi_enabled, func;
+ u32 dpi_enabled, func, ctrl_reg;
enum port port;
DRM_DEBUG_KMS("\n");
@@ -660,8 +660,9 @@ static bool intel_dsi_get_hw_state(struct intel_encoder
*encoder,
/* XXX: this only works for one DSI output */
for_each_dsi_port(port, intel_dsi->ports) {
func = I915_READ(MIPI_DSI_FUNC_PRG(port));
- dpi_enabled = I915_READ(MIPI_PORT_CTRL(port)) &
- DPI_ENABLE;
+ ctrl_reg = IS_BROXTON(dev) ? BXT_MIPI_PORT_CTRL(port) :
+ MIPI_PORT_CTRL(port);
+ dpi_enabled = I915_READ(ctrl_reg) & DPI_ENABLE;
/* Due to some hardware limitations on BYT, MIPI Port C DPI
* Enable bit does not get set. To check whether DSI Port C
--
1.7.9.5
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