diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi.c | 59 |
1 files changed, 40 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 2525cdd5234..3fd082933c8 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -35,6 +35,11 @@ /* the sub-encoders aka panel drivers */ static const struct intel_dsi_device intel_dsi_devices[] = { + { + .panel_id = MIPI_DSI_GENERIC_PANEL_ID, + .name = "vbt-generic-dsi-vid-mode-display", + .dev_ops = &vbt_generic_dsi_display_ops, + }, }; static void band_gap_reset(struct drm_i915_private *dev_priv) @@ -112,17 +117,18 @@ static void intel_dsi_device_ready(struct intel_encoder *encoder) /* bandgap reset is needed after everytime we do power gate */ band_gap_reset(dev_priv); + I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_ENTER); + usleep_range(2500, 3000); + val = I915_READ(MIPI_PORT_CTRL(pipe)); I915_WRITE(MIPI_PORT_CTRL(pipe), val | LP_OUTPUT_HOLD); usleep_range(1000, 1500); - I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY | ULPS_STATE_EXIT); - usleep_range(2000, 2500); - I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY); - usleep_range(2000, 2500); - I915_WRITE(MIPI_DEVICE_READY(pipe), 0x00); - usleep_range(2000, 2500); + + I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_EXIT); + usleep_range(2500, 3000); + I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY); - usleep_range(2000, 2500); + usleep_range(2500, 3000); } static void intel_dsi_enable(struct intel_encoder *encoder) @@ -201,6 +207,19 @@ static void intel_dsi_enable_nop(struct intel_encoder *encoder) */ } +static void intel_dsi_pre_disable(struct intel_encoder *encoder) +{ + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + + DRM_DEBUG_KMS("\n"); + + if (is_vid_mode(intel_dsi)) { + /* Send Shutdown command to the panel in LP mode */ + dpi_send_cmd(intel_dsi, SHUTDOWN, DPI_LP_MODE_EN); + msleep(10); + } +} + static void intel_dsi_disable(struct intel_encoder *encoder) { struct drm_device *dev = encoder->base.dev; @@ -213,10 +232,6 @@ static void intel_dsi_disable(struct intel_encoder *encoder) DRM_DEBUG_KMS("\n"); if (is_vid_mode(intel_dsi)) { - /* Send Shutdown command to the panel in LP mode */ - dpi_send_cmd(intel_dsi, SHUTDOWN, DPI_LP_MODE_EN); - msleep(10); - /* de-assert ip_tg_enable signal */ temp = I915_READ(MIPI_PORT_CTRL(pipe)); I915_WRITE(MIPI_PORT_CTRL(pipe), temp & ~DPI_ENABLE); @@ -257,23 +272,23 @@ static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) DRM_DEBUG_KMS("\n"); - I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_ENTER); + I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY | ULPS_STATE_ENTER); usleep_range(2000, 2500); - I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_EXIT); + I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY | ULPS_STATE_EXIT); usleep_range(2000, 2500); - I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_ENTER); + I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY | ULPS_STATE_ENTER); usleep_range(2000, 2500); - val = I915_READ(MIPI_PORT_CTRL(pipe)); - I915_WRITE(MIPI_PORT_CTRL(pipe), val & ~LP_OUTPUT_HOLD); - usleep_range(1000, 1500); - if (wait_for(((I915_READ(MIPI_PORT_CTRL(pipe)) & AFE_LATCHOUT) == 0x00000), 30)) DRM_ERROR("DSI LP not going Low\n"); + val = I915_READ(MIPI_PORT_CTRL(pipe)); + I915_WRITE(MIPI_PORT_CTRL(pipe), val & ~LP_OUTPUT_HOLD); + usleep_range(1000, 1500); + I915_WRITE(MIPI_DEVICE_READY(pipe), 0x00); usleep_range(2000, 2500); @@ -288,6 +303,8 @@ static void intel_dsi_post_disable(struct intel_encoder *encoder) DRM_DEBUG_KMS("\n"); + intel_dsi_disable(encoder); + intel_dsi_clear_device_ready(encoder); val = I915_READ(DSPCLK_GATE_D); @@ -655,6 +672,10 @@ bool intel_dsi_init(struct drm_device *dev) DRM_DEBUG_KMS("\n"); + /* There is no detection method for MIPI so rely on VBT */ + if (!dev_priv->vbt.has_mipi) + return false; + intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); if (!intel_dsi) return false; @@ -686,7 +707,7 @@ bool intel_dsi_init(struct drm_device *dev) intel_encoder->pre_pll_enable = intel_dsi_pre_pll_enable; intel_encoder->pre_enable = intel_dsi_pre_enable; intel_encoder->enable = intel_dsi_enable_nop; - intel_encoder->disable = intel_dsi_disable; + intel_encoder->disable = intel_dsi_pre_disable; intel_encoder->post_disable = intel_dsi_post_disable; intel_encoder->get_hw_state = intel_dsi_get_hw_state; intel_encoder->get_config = intel_dsi_get_config; |