From: Keith Packard <keithp@keithp.com>
To: Dave Airlie <airlied@redhat.com>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org,
Keith Packard <keithp@keithp.com>
Subject: [PATCH 01/21] drm/i915: Enable digital port hotplug on PCH systems
Date: Thu, 29 Sep 2011 18:09:33 -0700 [thread overview]
Message-ID: <1317344993-24945-2-git-send-email-keithp@keithp.com> (raw)
In-Reply-To: <1317344993-24945-1-git-send-email-keithp@keithp.com>
We were relying on the BIOS to set these bits, which doesn't always
happen.
Signed-off-by: Keith Packard <keithp@keithp.com>
---
drivers/gpu/drm/i915/i915_irq.c | 24 ++++++++++++++++++++++++
drivers/gpu/drm/i915/i915_reg.h | 5 ++++-
2 files changed, 28 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 9cbb0cd..c22823b 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1777,6 +1777,26 @@ static void ironlake_irq_preinstall(struct drm_device *dev)
POSTING_READ(SDEIER);
}
+/*
+ * Enable digital hotplug on the PCH, and configure the DP short pulse
+ * duration to 2ms (which is the minimum in the Display Port spec)
+ *
+ * This register is the same on all known PCH chips.
+ */
+
+static void ironlake_enable_pch_hotplug(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ u32 hotplug;
+
+ hotplug = I915_READ(PCH_PORT_HOTPLUG);
+ hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK);
+ hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms;
+ hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms;
+ hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms;
+ I915_WRITE(PCH_PORT_HOTPLUG, hotplug);
+}
+
static int ironlake_irq_postinstall(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -1839,6 +1859,8 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
I915_WRITE(SDEIER, hotplug_mask);
POSTING_READ(SDEIER);
+ ironlake_enable_pch_hotplug(dev);
+
if (IS_IRONLAKE_M(dev)) {
/* Clear & enable PCU event interrupts */
I915_WRITE(DEIIR, DE_PCU_EVENT);
@@ -1896,6 +1918,8 @@ static int ivybridge_irq_postinstall(struct drm_device *dev)
I915_WRITE(SDEIER, hotplug_mask);
POSTING_READ(SDEIER);
+ ironlake_enable_pch_hotplug(dev);
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 542453f..b7fbb74 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2903,12 +2903,13 @@
#define SDEIER 0xc400c
/* digital port hotplug */
-#define PCH_PORT_HOTPLUG 0xc4030
+#define PCH_PORT_HOTPLUG 0xc4030 /* SHOTPLUG_CTL */
#define PORTD_HOTPLUG_ENABLE (1 << 20)
#define PORTD_PULSE_DURATION_2ms (0)
#define PORTD_PULSE_DURATION_4_5ms (1 << 18)
#define PORTD_PULSE_DURATION_6ms (2 << 18)
#define PORTD_PULSE_DURATION_100ms (3 << 18)
+#define PORTD_PULSE_DURATION_MASK (3 << 18)
#define PORTD_HOTPLUG_NO_DETECT (0)
#define PORTD_HOTPLUG_SHORT_DETECT (1 << 16)
#define PORTD_HOTPLUG_LONG_DETECT (1 << 17)
@@ -2917,6 +2918,7 @@
#define PORTC_PULSE_DURATION_4_5ms (1 << 10)
#define PORTC_PULSE_DURATION_6ms (2 << 10)
#define PORTC_PULSE_DURATION_100ms (3 << 10)
+#define PORTC_PULSE_DURATION_MASK (3 << 10)
#define PORTC_HOTPLUG_NO_DETECT (0)
#define PORTC_HOTPLUG_SHORT_DETECT (1 << 8)
#define PORTC_HOTPLUG_LONG_DETECT (1 << 9)
@@ -2925,6 +2927,7 @@
#define PORTB_PULSE_DURATION_4_5ms (1 << 2)
#define PORTB_PULSE_DURATION_6ms (2 << 2)
#define PORTB_PULSE_DURATION_100ms (3 << 2)
+#define PORTB_PULSE_DURATION_MASK (3 << 2)
#define PORTB_HOTPLUG_NO_DETECT (0)
#define PORTB_HOTPLUG_SHORT_DETECT (1 << 0)
#define PORTB_HOTPLUG_LONG_DETECT (1 << 1)
--
1.7.6.3
next prev parent reply other threads:[~2011-09-30 1:10 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-19 22:21 drm/i915: eDP cleanup patch series -- fixes SNB MacBook Air Keith Packard
2011-09-19 22:21 ` [PATCH 1/9] drm/i915: Enable digital port hotplug on PCH systems Keith Packard
2011-09-19 22:21 ` [PATCH 2/9] drm/i915: Remove extra 300ms delay during eDP mode setting Keith Packard
2011-09-19 22:21 ` [PATCH 3/9] drm/i915: Only use VBT panel mode on eDP if no EDID is found Keith Packard
2011-09-19 22:21 ` [PATCH 4/9] drm/i915: Check eDP power when doing aux channel communications Keith Packard
2011-09-19 22:21 ` [PATCH 5/9] drm/i915: Unlock PCH_PP_CONTROL always Keith Packard
2011-09-19 22:22 ` [PATCH 6/9] drm/i915: Make sure eDP power is on before using aux channel Keith Packard
2011-09-21 3:50 ` [Intel-gfx] " Jesse Barnes
2011-09-21 4:45 ` Keith Packard
2011-09-23 2:55 ` Jesse Barnes
2011-09-23 5:07 ` Keith Packard
2011-09-19 22:22 ` [PATCH 7/9] drm/i915: Correct eDP panel power sequencing delay computations Keith Packard
2011-09-19 22:22 ` [PATCH 8/9] drm/i915: Move eDP panel fixed mode from dev_priv to intel_dp Keith Packard
2011-09-19 22:22 ` [PATCH 9/9] drm/i915: Disable eDP VDD in a delayed work proc instead of synchronously Keith Packard
2011-09-21 4:17 ` [Intel-gfx] " Jesse Barnes
2011-09-21 4:51 ` Keith Packard
2011-09-23 3:22 ` Jesse Barnes
2011-09-30 1:09 ` [PATCH 00/24] MacBook Air patch sequence (v2) Keith Packard
2011-09-30 1:09 ` Keith Packard [this message]
2011-09-30 16:17 ` [Intel-gfx] [PATCH 01/21] drm/i915: Enable digital port hotplug on PCH systems Daniel Vetter
2011-10-03 20:34 ` Jesse Barnes
2011-09-30 1:09 ` [PATCH 02/21] drm/i915: Shut down PCH interrupts during irq_uninstall Keith Packard
2011-09-30 16:20 ` Daniel Vetter
2011-09-30 17:44 ` Keith Packard
2011-09-30 17:56 ` Daniel Vetter
2011-09-30 1:09 ` [PATCH 03/21] drm/i915: Remove extra 300ms delay during eDP mode setting Keith Packard
2011-09-30 16:27 ` Daniel Vetter
2011-09-30 17:50 ` Keith Packard
2011-09-30 17:58 ` Daniel Vetter
2011-09-30 18:09 ` Daniel Vetter
2011-09-30 18:28 ` Keith Packard
2011-09-30 1:09 ` [PATCH 04/21] drm/i915: Only use VBT panel mode on eDP if no EDID is found Keith Packard
2011-09-30 16:32 ` Daniel Vetter
2011-09-30 17:58 ` Keith Packard
2011-10-03 20:42 ` [Intel-gfx] " Jesse Barnes
2011-09-30 1:09 ` [PATCH 05/21] drm/i915: Check eDP power when doing aux channel communications Keith Packard
2011-09-30 17:02 ` [Intel-gfx] " Daniel Vetter
2011-09-30 18:01 ` Keith Packard
2011-09-30 18:11 ` Daniel Vetter
2011-09-30 18:23 ` Chris Wilson
2011-10-03 20:48 ` Jesse Barnes
2011-09-30 1:09 ` [PATCH 06/21] drm/i915: Unlock PCH_PP_CONTROL always Keith Packard
2011-09-30 17:09 ` [Intel-gfx] " Daniel Vetter
2011-09-30 18:01 ` Keith Packard
2011-09-30 23:14 ` Keith Packard
2011-10-01 9:35 ` Daniel Vetter
2011-09-30 1:09 ` [PATCH 07/21] drm/i915: Check for eDP inside intel_edp_panel_vdd_on/off Keith Packard
2011-09-30 17:13 ` [Intel-gfx] " Daniel Vetter
2011-09-30 18:02 ` Keith Packard
2011-09-30 1:09 ` [PATCH 08/21] drm/i915: Turn force VDD back off when panel running in intel_dp_dpms Keith Packard
2011-09-30 17:15 ` [Intel-gfx] " Daniel Vetter
2011-09-30 1:09 ` [PATCH 09/21] drm/i915: Delay DP i2c initialization until panel power timings are computed Keith Packard
2011-09-30 17:25 ` [Intel-gfx] " Daniel Vetter
2011-09-30 1:09 ` [PATCH 10/21] drm/i915: Wrap DP EDID fetch functions to enable eDP panel power Keith Packard
2011-09-30 17:32 ` Daniel Vetter
2011-10-03 20:59 ` [Intel-gfx] " Jesse Barnes
2011-09-30 1:09 ` [PATCH 11/21] drm/i915: Enable eDP panel power during I2C initialization sequence Keith Packard
2011-09-30 17:26 ` Daniel Vetter
2011-09-30 1:09 ` [PATCH 12/21] drm/i915: Ensure eDP powered up during DP_SET_POWER operation in dp_prepare Keith Packard
2011-09-30 17:45 ` Daniel Vetter
2011-09-30 18:30 ` Keith Packard
2011-09-30 1:09 ` [PATCH 13/21] drm/i915: Place long delays after each eDP VDD operation Keith Packard
2011-09-30 18:01 ` [Intel-gfx] " Daniel Vetter
2011-09-30 18:31 ` Keith Packard
2011-09-30 1:09 ` [PATCH 14/21] drm/i915: Correct eDP panel power sequencing delay computations Keith Packard
2011-09-30 18:16 ` Daniel Vetter
2011-09-30 18:33 ` Keith Packard
2011-10-01 3:31 ` Keith Packard
2011-10-01 9:59 ` Daniel Vetter
2011-10-01 19:01 ` Keith Packard
2011-10-03 10:10 ` Daniel Vetter
2011-09-30 1:09 ` [PATCH 15/21] drm/i915: Move eDP panel fixed mode from dev_priv to intel_dp Keith Packard
2011-09-30 18:20 ` [Intel-gfx] " Daniel Vetter
2011-09-30 1:09 ` [PATCH 16/21] drm/i915: edp_panel_on does not need to return a bool Keith Packard
2011-09-30 18:21 ` Daniel Vetter
2011-10-03 21:03 ` [Intel-gfx] " Jesse Barnes
2011-09-30 1:09 ` [PATCH 17/21] drm/i915: Create helper functions to determine eDP power state Keith Packard
2011-09-30 18:26 ` [Intel-gfx] " Daniel Vetter
2011-09-30 1:09 ` [PATCH 18/21] drm/i915: Disable eDP VDD in a delayed work proc instead of synchronously Keith Packard
2011-09-30 10:31 ` Chris Wilson
2011-09-30 18:06 ` Keith Packard
2011-09-30 18:47 ` Daniel Vetter
2011-09-30 20:56 ` Keith Packard
2011-09-30 22:01 ` Daniel Vetter
2011-09-30 1:09 ` [PATCH 19/21] drm/i915: Asynchronous eDP panel power off Keith Packard
2011-09-30 18:55 ` Daniel Vetter
2011-09-30 20:57 ` Keith Packard
2011-10-12 14:41 ` Dave Airlie
2011-10-12 16:43 ` Keith Packard
2011-09-30 1:09 ` [PATCH 20/21] drm/i915: Restrict ILK-specific eDP power hack to ILK Keith Packard
2011-09-30 18:57 ` Daniel Vetter
2011-09-30 1:09 ` [PATCH 21/21] drm/i915: No need to wait for eDP power off delay if panel is on Keith Packard
2011-09-30 19:01 ` Daniel Vetter
2011-09-30 3:33 ` [PATCH 00/24] MacBook Air patch sequence (v2) Greg KH
2011-09-30 8:58 ` Keith Packard
2011-09-30 13:57 ` Greg KH
2011-09-30 18:10 ` Keith Packard
2011-09-30 13:20 ` Ted Ts'o
2011-09-30 18:17 ` Keith Packard
2011-10-03 21:06 ` [Intel-gfx] " Jesse Barnes
2011-10-11 8:04 ` Chris Wilson
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