diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi.c | 45 |
1 files changed, 23 insertions, 22 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 170ae6f4866e..efb5a27dd49c 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -60,7 +60,8 @@ static void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi, enum port port) DRM_ERROR("DPI FIFOs are not empty\n"); } -static void write_data(struct drm_i915_private *dev_priv, u32 reg, +static void write_data(struct drm_i915_private *dev_priv, + i915_reg_t reg, const u8 *data, u32 len) { u32 i, j; @@ -75,7 +76,8 @@ static void write_data(struct drm_i915_private *dev_priv, u32 reg, } } -static void read_data(struct drm_i915_private *dev_priv, u32 reg, +static void read_data(struct drm_i915_private *dev_priv, + i915_reg_t reg, u8 *data, u32 len) { u32 i, j; @@ -98,7 +100,8 @@ static ssize_t intel_dsi_host_transfer(struct mipi_dsi_host *host, struct mipi_dsi_packet packet; ssize_t ret; const u8 *header, *data; - u32 data_reg, data_mask, ctrl_reg, ctrl_mask; + i915_reg_t data_reg, ctrl_reg; + u32 data_mask, ctrl_mask; ret = mipi_dsi_create_packet(&packet, msg); if (ret < 0) @@ -377,10 +380,10 @@ static void intel_dsi_port_enable(struct intel_encoder *encoder) struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); enum port port; - u32 temp; - u32 port_ctrl; if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { + u32 temp; + temp = I915_READ(VLV_CHICKEN_3); temp &= ~PIXEL_OVERLAP_CNT_MASK | intel_dsi->pixel_overlap << @@ -389,8 +392,9 @@ static void intel_dsi_port_enable(struct intel_encoder *encoder) } for_each_dsi_port(port, intel_dsi->ports) { - port_ctrl = IS_BROXTON(dev) ? BXT_MIPI_PORT_CTRL(port) : - MIPI_PORT_CTRL(port); + i915_reg_t port_ctrl = IS_BROXTON(dev) ? + BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(port); + u32 temp; temp = I915_READ(port_ctrl); @@ -416,13 +420,13 @@ static void intel_dsi_port_disable(struct intel_encoder *encoder) struct drm_i915_private *dev_priv = dev->dev_private; struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); enum port port; - u32 temp; - u32 port_ctrl; for_each_dsi_port(port, intel_dsi->ports) { + i915_reg_t port_ctrl = IS_BROXTON(dev) ? + BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(port); + u32 temp; + /* de-assert ip_tg_enable signal */ - port_ctrl = IS_BROXTON(dev) ? BXT_MIPI_PORT_CTRL(port) : - MIPI_PORT_CTRL(port); temp = I915_READ(port_ctrl); I915_WRITE(port_ctrl, temp & ~DPI_ENABLE); POSTING_READ(port_ctrl); @@ -580,11 +584,13 @@ static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); enum port port; - u32 val; - u32 port_ctrl = 0; DRM_DEBUG_KMS("\n"); for_each_dsi_port(port, intel_dsi->ports) { + /* Common bit for both MIPI Port A & MIPI Port C on VLV/CHV */ + i915_reg_t port_ctrl = IS_BROXTON(dev) ? + BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(PORT_A); + u32 val; I915_WRITE(MIPI_DEVICE_READY(port), DEVICE_READY | ULPS_STATE_ENTER); @@ -598,12 +604,6 @@ static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) ULPS_STATE_ENTER); usleep_range(2000, 2500); - if (IS_BROXTON(dev)) - port_ctrl = BXT_MIPI_PORT_CTRL(port); - else if (IS_VALLEYVIEW(dev)) - /* Common bit for both MIPI Port A & MIPI Port C */ - port_ctrl = MIPI_PORT_CTRL(PORT_A); - /* Wait till Clock lanes are in LP-00 state for MIPI Port A * only. MIPI Port C has no similar bit for checking */ @@ -656,7 +656,6 @@ 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, ctrl_reg; enum port port; DRM_DEBUG_KMS("\n"); @@ -667,9 +666,11 @@ 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) { + i915_reg_t ctrl_reg = IS_BROXTON(dev) ? + BXT_MIPI_PORT_CTRL(port) : MIPI_PORT_CTRL(port); + u32 dpi_enabled, func; + func = I915_READ(MIPI_DSI_FUNC_PRG(port)); - 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 |