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From: Hans de Goede <hdegoede@redhat.com>
To: "Daniel Vetter" <daniel.vetter@intel.com>,
	"Jani Nikula" <jani.nikula@linux.intel.com>,
	"Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>,
	intel-gfx <intel-gfx@lists.freedesktop.org>,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 12/18] drm/i915/dsi: Group DPOunit clock gate workaround with PLL enable
Date: Thu,  1 Dec 2016 21:29:19 +0100	[thread overview]
Message-ID: <20161201202925.12220-13-hdegoede@redhat.com> (raw)
In-Reply-To: <20161201202925.12220-1-hdegoede@redhat.com>

Move the DPOunit clock gate workaround to directly after the PLL enable.

The exact location of the workaround does not matter and there are 2
reasons to group it with the PLL enable:

1) This moves it out of the middle of the init sequence from the spec,
   making it easier to follow the init sequence / compare it to the spec

2) It is grouped with the pll disable call in intel_dsi_post_disable,
   so for consistency it should be grouped with the pll enable in
   intel_dsi_pre_enable

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/gpu/drm/i915/intel_dsi.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 8927c7a..9e3cf54 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -636,14 +636,6 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder,
 	intel_disable_dsi_pll(encoder);
 	intel_enable_dsi_pll(encoder, pipe_config);
 
-	intel_dsi_prepare(encoder, pipe_config);
-
-	/* Power on, try both CRC pmic gpio and VBT */
-	if (intel_dsi->gpio_panel)
-		gpiod_set_value_cansleep(intel_dsi->gpio_panel, 1);
-	intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
-	msleep(intel_dsi->panel_on_delay);
-
 	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		u32 val;
 
@@ -653,6 +645,14 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder,
 		I915_WRITE(DSPCLK_GATE_D, val);
 	}
 
+	intel_dsi_prepare(encoder, pipe_config);
+
+	/* Power on, try both CRC pmic gpio and VBT */
+	if (intel_dsi->gpio_panel)
+		gpiod_set_value_cansleep(intel_dsi->gpio_panel, 1);
+	intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
+	msleep(intel_dsi->panel_on_delay);
+
 	/* put device in ready state */
 	intel_dsi_device_ready(encoder);
 
-- 
2.9.3

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  parent reply	other threads:[~2016-12-01 20:29 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-01 20:29 [PATCH 00/18] drm/i915/dsi: Fix / cleanup dsi enable / disable sequences Hans de Goede
2016-12-01 20:29 ` [PATCH 01/18] drm/i915/dsi: Fix swapping of MIPI_SEQ_DEASSERT_RESET / MIPI_SEQ_ASSERT_RESET Hans de Goede
2016-12-02 12:37   ` Ville Syrjälä
2016-12-02 13:34     ` Hans de Goede
2016-12-02 13:45       ` Ville Syrjälä
2016-12-01 20:29 ` [PATCH 02/18] drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting Hans de Goede
2016-12-07 17:48   ` Ville Syrjälä
2016-12-01 20:29 ` [PATCH 03/18] drm/i915/dsi: Move calling of wait_for_dsi_fifo_empty to mipi_exec_send_packet Hans de Goede
2016-12-01 20:29 ` [PATCH 04/18] drm/i915/dsi: Merge intel_dsi_disable/enable into their respective callers Hans de Goede
2016-12-01 20:29 ` [PATCH 05/18] drm/i915/dsi: Add intel_dsi_unprepare() helper Hans de Goede
2016-12-01 20:29 ` [PATCH 06/18] drm/i915/dsi: Move disable pll call outside of clear_device_ready() Hans de Goede
2016-12-23 13:35   ` Jani Nikula
2016-12-01 20:29 ` [PATCH 07/18] drm/i915/dsi: Move intel_dsi_clear_device_ready() Hans de Goede
2016-12-01 20:29 ` [PATCH 08/18] drm/i915/dsi: Document the panel enable / disable sequences from the spec Hans de Goede
2016-12-02 10:31   ` Jani Nikula
2016-12-01 20:29 ` [PATCH 09/18] drm/i915/dsi: Make intel_dsi_enable/disable directly exec VBT sequences Hans de Goede
2016-12-02 10:31   ` Jani Nikula
2016-12-02 13:44     ` Hans de Goede
2016-12-02 14:01       ` Jani Nikula
2016-12-01 20:29 ` [PATCH 10/18] drm/i915/dsi: Drop bogus MIPI_SEQ_ASSERT_RESET before POWER_ON Hans de Goede
2016-12-01 20:29 ` [PATCH 11/18] drm/i915/dsi: Move MIPI_SEQ_POWER_ON/OFF calls together with pmic gpio calls Hans de Goede
2016-12-01 20:29 ` Hans de Goede [this message]
2016-12-01 20:29 ` [PATCH 13/18] drm/i915/dsi: Execute MIPI_SEQ_DEASSERT_RESET before calling device_ready() Hans de Goede
2016-12-01 20:29 ` [PATCH 14/18] drm/i915/dsi: Group MIPI_SEQ_BACKLIGHT_ON/OFF with panel_[en|dis]able_backlight Hans de Goede
2016-12-01 20:29 ` [PATCH 15/18] drm/i915/dsi: Document always using v3 SHUTDOWN / MIPI_SEQ_DISPLAY_OFF order Hans de Goede
2016-12-01 20:29 ` [PATCH 16/18] drm/i915/dsi: Execute MIPI_SEQ_TEAR_OFF from intel_dsi_post_disable Hans de Goede
2016-12-01 20:29 ` [PATCH 17/18] drm/i915/dsi: Call MIPI_SEQ_TEAR_ON and DISPLAY_ON for cmd-mode (untested) Hans de Goede
2016-12-01 20:29 ` [PATCH 18/18] drm/i915/dsi: Skip delays for v3 VBTs in vid-mode Hans de Goede

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