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drm/i915/icl: Get HW state for DSI encoder

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This patch read out the current hw state for DSI and
return true if encoder is active.

v2 by Jani:
 - Squash connector get hw state hook here
 - Squash encode get hw state fix here

v3 by Jani:
 - Add encoder->get_power_domains() (Imre)

v4 by Jani:
 - Make encoder->get_power_domains() sensible... (Imre)

v5 by Jani:
 - Power domains are bit positions, not bits (Stan, Imre)

Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ec6da32a55b9fb045527f14e41ed3dce86d46a97.1543500286.git.jani.nikula@intel.com
This commit is contained in:
Madhav Chauhan 2018-11-29 16:12:24 +02:00 committed by Jani Nikula
parent 8327af281d
commit ab8411483a
1 changed files with 59 additions and 0 deletions
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59
drivers/gpu/drm/i915/icl_dsi.c
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@ -1074,6 +1074,62 @@ static void gen11_dsi_get_config(struct intel_encoder *encoder,
pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
}
static u64 gen11_dsi_get_power_domains(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state)
{
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
u64 domains = 0;
enum port port;
for_each_dsi_port(port, intel_dsi->ports)
if (port == PORT_A)
domains |= BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO);
else
domains |= BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO);
return domains;
}
static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,
enum pipe *pipe)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
u32 tmp;
enum port port;
enum transcoder dsi_trans;
bool ret = false;
if (!intel_display_power_get_if_enabled(dev_priv,
encoder->power_domain))
return false;
for_each_dsi_port(port, intel_dsi->ports) {
dsi_trans = dsi_port_to_transcoder(port);
tmp = I915_READ(TRANS_DDI_FUNC_CTL(dsi_trans));
switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
case TRANS_DDI_EDP_INPUT_A_ON:
*pipe = PIPE_A;
break;
case TRANS_DDI_EDP_INPUT_B_ONOFF:
*pipe = PIPE_B;
break;
case TRANS_DDI_EDP_INPUT_C_ONOFF:
*pipe = PIPE_C;
break;
default:
DRM_ERROR("Invalid PIPE input\n");
goto out;
}
tmp = I915_READ(PIPECONF(dsi_trans));
ret = tmp & PIPECONF_ENABLE;
}
out:
intel_display_power_put(dev_priv, encoder->power_domain);
return ret;
}
static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder)
{
intel_encoder_destroy(encoder);
@ -1188,10 +1244,12 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
encoder->disable = gen11_dsi_disable;
encoder->port = port;
encoder->get_config = gen11_dsi_get_config;
encoder->get_hw_state = gen11_dsi_get_hw_state;
encoder->type = INTEL_OUTPUT_DSI;
encoder->cloneable = 0;
encoder->crtc_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C);
encoder->power_domain = POWER_DOMAIN_PORT_DSI;
encoder->get_power_domains = gen11_dsi_get_power_domains;
/* register DSI connector with DRM subsystem */
drm_connector_init(dev, connector, &gen11_dsi_connector_funcs,
@ -1200,6 +1258,7 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
connector->display_info.subpixel_order = SubPixelHorizontalRGB;
connector->interlace_allowed = false;
connector->doublescan_allowed = false;
intel_connector->get_hw_state = intel_connector_get_hw_state;
/* attach connector to encoder */
intel_connector_attach_encoder(intel_connector, encoder);