Re: [PATCH 2/2] drm/i915: allow platforms without eDP transcoder

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On Mon, Feb 25, 2019 at 06:17:13AM -0800, Mika Kahola wrote:
Looks allright.

On Fri, 2019-02-22 at 15:02 -0800, Lucas De Marchi wrote:
Define a HAS_TRANSCODER_EDP() macro that checks if we have defined an
offset for this transcoder. This allows platforms to be defined
without
eDP transcoder.

Cc: Mika Kahola <mika.kahola@xxxxxxxxx>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx>

humn.. this depends on the first patch. Is this r-b for both?

Lucas De Marchi


Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_drv.h      | 1 +
 drivers/gpu/drm/i915/intel_ddi.c     | 6 +++---
 drivers/gpu/drm/i915/intel_display.c | 5 ++++-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h
b/drivers/gpu/drm/i915/i915_drv.h
index cc09caf3870e..a8e9f0cf20f5 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2519,6 +2519,7 @@ static inline unsigned int
i915_sg_segment_size(void)
 #define HAS_DDI(dev_priv)		 (INTEL_INFO(dev_priv)-
>display.has_ddi)
 #define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)-
>has_fpga_dbg)
 #define HAS_PSR(dev_priv)		 (INTEL_INFO(dev_priv)-
>display.has_psr)
+#define HAS_TRANSCODER_EDP(dev_priv)	 (INTEL_INFO(dev_priv)-
>trans_offsets[TRANSCODER_EDP] != 0)

 #define HAS_RC6(dev_priv)		 (INTEL_INFO(dev_priv)-
>has_rc6)
 #define HAS_RC6p(dev_priv)		 (INTEL_INFO(dev_priv)-
>has_rc6p)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c
b/drivers/gpu/drm/i915/intel_ddi.c
index ea83071a22c4..8eeffa027b74 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1911,7 +1911,7 @@ bool intel_ddi_connector_get_hw_state(struct
intel_connector *intel_connector)
 		goto out;
 	}

-	if (port == PORT_A)
+	if (HAS_TRANSCODER_EDP(dev_priv) && port == PORT_A)
 		cpu_transcoder = TRANSCODER_EDP;
 	else
 		cpu_transcoder = (enum transcoder) pipe;
@@ -1973,7 +1973,7 @@ static void intel_ddi_get_encoder_pipes(struct
intel_encoder *encoder,
 	if (!(tmp & DDI_BUF_CTL_ENABLE))
 		goto out;

-	if (port == PORT_A) {
+	if (HAS_TRANSCODER_EDP(dev_priv) && port == PORT_A) {
 		tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));

 		switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
@@ -3856,7 +3856,7 @@ static int intel_ddi_compute_config(struct
intel_encoder *encoder,
 	enum port port = encoder->port;
 	int ret;

-	if (port == PORT_A)
+	if (HAS_TRANSCODER_EDP(dev_priv) && port == PORT_A)
 		pipe_config->cpu_transcoder = TRANSCODER_EDP;

 	if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI))
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 9dfb99195144..8bf4bdf2006a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9688,7 +9688,7 @@ static bool hsw_get_transcoder_state(struct
intel_crtc *crtc,
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	enum intel_display_power_domain power_domain;
-	unsigned long panel_transcoder_mask = BIT(TRANSCODER_EDP);
+	unsigned long panel_transcoder_mask = 0;
 	unsigned long enabled_panel_transcoders = 0;
 	enum transcoder panel_transcoder;
 	u32 tmp;
@@ -9697,6 +9697,9 @@ static bool hsw_get_transcoder_state(struct
intel_crtc *crtc,
 		panel_transcoder_mask |=
 			BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);

+	if (HAS_TRANSCODER_EDP(dev_priv))
+		panel_transcoder_mask |= BIT(TRANSCODER_EDP);
+
 	/*
 	 * The pipe->transcoder mapping is fixed with the exception of
the eDP
 	 * and DSI transcoders handled below.
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