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drm/i915: remove Pineview EOS protection support 

HW guys have an evaluation about the impact about EOS, and say the impact
is quite small, so they have removed EOS detection support. This patch
removes EOS feature.

revert commit 0430296558
directly reverting it gives a hunk error, so please use this one.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
[anholt: fixed up commit message for update that the feature's really gone]
This commit is contained in:
Shaohua Li 2009-10-14 17:19:28 +08:00 committed by Eric Anholt
parent 311089d3d3
commit 2644487781
3 changed files with 0 additions and 51 deletions
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21
drivers/gpu/drm/i915/i915_irq.c
View File

@ -622,27 +622,6 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
I915_READ(PORT_HOTPLUG_STAT);
/* EOS interrupts occurs */
if (IS_IGD(dev) &&
(hotplug_status & CRT_EOS_INT_STATUS)) {
u32 temp;
DRM_DEBUG_DRIVER("EOS interrupt occurs\n");
/* status is already cleared */
temp = I915_READ(ADPA);
temp &= ~ADPA_DAC_ENABLE;
I915_WRITE(ADPA, temp);
temp = I915_READ(PORT_HOTPLUG_EN);
temp &= ~CRT_EOS_INT_EN;
I915_WRITE(PORT_HOTPLUG_EN, temp);
temp = I915_READ(PORT_HOTPLUG_STAT);
if (temp & CRT_EOS_INT_STATUS)
I915_WRITE(PORT_HOTPLUG_STAT,
CRT_EOS_INT_STATUS);
}
}
I915_WRITE(IIR, iir);

2
drivers/gpu/drm/i915/i915_reg.h
View File

@ -852,7 +852,6 @@
#define SDVOB_HOTPLUG_INT_EN (1 << 26)
#define SDVOC_HOTPLUG_INT_EN (1 << 25)
#define TV_HOTPLUG_INT_EN (1 << 18)
#define CRT_EOS_INT_EN (1 << 10)
#define CRT_HOTPLUG_INT_EN (1 << 9)
#define CRT_HOTPLUG_FORCE_DETECT (1 << 3)
#define CRT_HOTPLUG_ACTIVATION_PERIOD_32 (0 << 8)
@ -887,7 +886,6 @@
#define DPC_HOTPLUG_INT_STATUS (1 << 28)
#define HDMID_HOTPLUG_INT_STATUS (1 << 27)
#define DPD_HOTPLUG_INT_STATUS (1 << 27)
#define CRT_EOS_INT_STATUS (1 << 12)
#define CRT_HOTPLUG_INT_STATUS (1 << 11)
#define TV_HOTPLUG_INT_STATUS (1 << 10)
#define CRT_HOTPLUG_MONITOR_MASK (3 << 8)

28
drivers/gpu/drm/i915/intel_crt.c
View File

@ -64,34 +64,6 @@ static void intel_crt_dpms(struct drm_encoder *encoder, int mode)
}
I915_WRITE(reg, temp);
if (IS_IGD(dev)) {
if (mode == DRM_MODE_DPMS_OFF) {
/* turn off DAC */
temp = I915_READ(PORT_HOTPLUG_EN);
temp &= ~CRT_EOS_INT_EN;
I915_WRITE(PORT_HOTPLUG_EN, temp);
temp = I915_READ(PORT_HOTPLUG_STAT);
if (temp & CRT_EOS_INT_STATUS)
I915_WRITE(PORT_HOTPLUG_STAT,
CRT_EOS_INT_STATUS);
} else {
/* turn on DAC. EOS interrupt must be enabled after DAC
* is enabled, so it sounds not good to enable it in
* i915_driver_irq_postinstall()
* wait 12.5ms after DAC is enabled
*/
msleep(13);
temp = I915_READ(PORT_HOTPLUG_STAT);
if (temp & CRT_EOS_INT_STATUS)
I915_WRITE(PORT_HOTPLUG_STAT,
CRT_EOS_INT_STATUS);
temp = I915_READ(PORT_HOTPLUG_EN);
temp |= CRT_EOS_INT_EN;
I915_WRITE(PORT_HOTPLUG_EN, temp);
}
}
}
static int intel_crt_mode_valid(struct drm_connector *connector,