From 5a2e65e742cac8939ab411f38ef1a36ef927181c Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 28 Feb 2017 11:26:17 +0200 Subject: [PATCH] drm/i915/dsi: Merge intel_dsi_disable/enable into their respective callers intel_dsi_disable/enable only have one caller, merge them into their respective callers. Change msleep(2) into usleep_range(2000, 5000) to make checkpatch happy, otherwise no functional changes. The main advantage of this change is that it makes it easier to follow all the steps of the panel enable / disable sequence when reading the code. Signed-off-by: Hans de Goede Acked-by: Jani Nikula Reviewed-by: Bob Paauwe Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/d7249612e6d2e9639ecd1d8d106ca37d5794f2a4.1488273823.git.jani.nikula@intel.com --- drivers/gpu/drm/i915/intel_dsi.c | 108 +++++++++++++------------------ 1 file changed, 44 insertions(+), 64 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 598ac658e361..859d4d71f8e1 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -505,32 +505,6 @@ static void intel_dsi_port_disable(struct intel_encoder *encoder) } } -static void intel_dsi_enable(struct intel_encoder *encoder) -{ - struct drm_device *dev = encoder->base.dev; - struct drm_i915_private *dev_priv = to_i915(dev); - struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); - enum port port; - - DRM_DEBUG_KMS("\n"); - - if (is_cmd_mode(intel_dsi)) { - for_each_dsi_port(port, intel_dsi->ports) - I915_WRITE(MIPI_MAX_RETURN_PKT_SIZE(port), 8 * 4); - } else { - msleep(20); /* XXX */ - for_each_dsi_port(port, intel_dsi->ports) - dpi_send_cmd(intel_dsi, TURN_ON, false, port); - msleep(100); - - drm_panel_enable(intel_dsi->panel); - - intel_dsi_port_enable(encoder); - } - - intel_panel_enable_backlight(intel_dsi->attached_connector); -} - static void intel_dsi_prepare(struct intel_encoder *intel_encoder, struct intel_crtc_state *pipe_config); @@ -540,6 +514,7 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder, { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + enum port port; u32 val; DRM_DEBUG_KMS("\n"); @@ -586,7 +561,21 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder, /* Enable port in pre-enable phase itself because as per hw team * recommendation, port should be enabled befor plane & pipe */ - intel_dsi_enable(encoder); + if (is_cmd_mode(intel_dsi)) { + for_each_dsi_port(port, intel_dsi->ports) + I915_WRITE(MIPI_MAX_RETURN_PKT_SIZE(port), 8 * 4); + } else { + msleep(20); /* XXX */ + for_each_dsi_port(port, intel_dsi->ports) + dpi_send_cmd(intel_dsi, TURN_ON, false, port); + msleep(100); + + drm_panel_enable(intel_dsi->panel); + + intel_dsi_port_enable(encoder); + } + + intel_panel_enable_backlight(intel_dsi->attached_connector); } static void intel_dsi_enable_nop(struct intel_encoder *encoder, @@ -631,42 +620,6 @@ static void intel_dsi_pre_disable(struct intel_encoder *encoder, } } -static void intel_dsi_disable(struct intel_encoder *encoder) -{ - struct drm_device *dev = encoder->base.dev; - struct drm_i915_private *dev_priv = to_i915(dev); - struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); - enum port port; - u32 temp; - - DRM_DEBUG_KMS("\n"); - - if (is_vid_mode(intel_dsi)) { - for_each_dsi_port(port, intel_dsi->ports) - wait_for_dsi_fifo_empty(intel_dsi, port); - - intel_dsi_port_disable(encoder); - msleep(2); - } - - for_each_dsi_port(port, intel_dsi->ports) { - /* Panel commands can be sent when clock is in LP11 */ - I915_WRITE(MIPI_DEVICE_READY(port), 0x0); - - intel_dsi_reset_clocks(encoder, port); - I915_WRITE(MIPI_EOT_DISABLE(port), CLOCKSTOP); - - temp = I915_READ(MIPI_DSI_FUNC_PRG(port)); - temp &= ~VID_MODE_FORMAT_MASK; - I915_WRITE(MIPI_DSI_FUNC_PRG(port), temp); - - I915_WRITE(MIPI_DEVICE_READY(port), 0x1); - } - /* if disable packets are sent before sending shutdown packet then in - * some next enable sequence send turn on packet error is observed */ - drm_panel_disable(intel_dsi->panel); -} - static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); @@ -716,11 +669,38 @@ static void intel_dsi_post_disable(struct intel_encoder *encoder, { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + enum port port; u32 val; DRM_DEBUG_KMS("\n"); - intel_dsi_disable(encoder); + if (is_vid_mode(intel_dsi)) { + for_each_dsi_port(port, intel_dsi->ports) + wait_for_dsi_fifo_empty(intel_dsi, port); + + intel_dsi_port_disable(encoder); + usleep_range(2000, 5000); + } + + for_each_dsi_port(port, intel_dsi->ports) { + /* Panel commands can be sent when clock is in LP11 */ + I915_WRITE(MIPI_DEVICE_READY(port), 0x0); + + intel_dsi_reset_clocks(encoder, port); + I915_WRITE(MIPI_EOT_DISABLE(port), CLOCKSTOP); + + val = I915_READ(MIPI_DSI_FUNC_PRG(port)); + val &= ~VID_MODE_FORMAT_MASK; + I915_WRITE(MIPI_DSI_FUNC_PRG(port), val); + + I915_WRITE(MIPI_DEVICE_READY(port), 0x1); + } + + /* + * if disable packets are sent before sending shutdown packet then in + * some next enable sequence send turn on packet error is observed + */ + drm_panel_disable(intel_dsi->panel); intel_dsi_clear_device_ready(encoder); -- 2.20.1