Release 4.7 drivers/gpu/drm/i915/intel_crt.c

/*
 * Copyright © 2006-2007 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *      Eric Anholt <eric@anholt.net>
 */

#include <linux/dmi.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include "intel_drv.h"
#include <drm/i915_drm.h>
#include "i915_drv.h"

/* Here's the desired hotplug mode */

#define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 |          \
                           ADPA_CRT_HOTPLUG_WARMUP_10MS |               \
                           ADPA_CRT_HOTPLUG_SAMPLE_4S |                 \
                           ADPA_CRT_HOTPLUG_VOLTAGE_50 |                \
                           ADPA_CRT_HOTPLUG_VOLREF_325MV |              \
                           ADPA_CRT_HOTPLUG_ENABLE)


struct intel_crt {
	
struct intel_encoder base;
	/* DPMS state is stored in the connector, which we need in the
         * encoder's enable/disable callbacks */
	
struct intel_connector *connector;
	
bool force_hotplug_required;
	
i915_reg_t adpa_reg;
};



static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
{
	return container_of(encoder, struct intel_crt, base);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
chris wilson
chris wilson
20
83.33%
1
50.00%
daniel vetter
daniel vetter
4
16.67%
1
50.00%
Total
24
100.00%
2
100.00%



static struct intel_crt *intel_attached_crt(struct drm_connector *connector)
{
	return intel_encoder_to_crt(intel_attached_encoder(connector));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
daniel vetter
daniel vetter
22
100.00%
2
100.00%
Total
22
100.00%
2
100.00%



static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
				   enum pipe *pipe)
{
	struct drm_device *dev = encoder->base.dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_crt *crt = intel_encoder_to_crt(encoder);
	enum intel_display_power_domain power_domain;
	u32 tmp;
	bool ret;

	power_domain = intel_display_port_power_domain(encoder);
	if (!intel_display_power_get_if_enabled(dev_priv, power_domain))
		return false;

	ret = false;

	tmp = I915_READ(crt->adpa_reg);

	if (!(tmp & ADPA_DAC_ENABLE))
		goto out;

	if (HAS_PCH_CPT(dev))
		*pipe = PORT_TO_PIPE_CPT(tmp);
	else
		*pipe = PORT_TO_PIPE(tmp);

	ret = true;
out:
	intel_display_power_put(dev_priv, power_domain);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
daniel vetter
daniel vetter
67
47.52%
1
25.00%
imre deak
imre deak
48
34.04%
2
50.00%
jesse barnes
jesse barnes
26
18.44%
1
25.00%
Total
141
100.00%
4
100.00%



static unsigned int intel_crt_get_flags(struct intel_encoder *encoder)
{
	struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
	struct intel_crt *crt = intel_encoder_to_crt(encoder);
	u32 tmp, flags = 0;

	tmp = I915_READ(crt->adpa_reg);

	if (tmp & ADPA_HSYNC_ACTIVE_HIGH)
		flags |= DRM_MODE_FLAG_PHSYNC;
	else
		flags |= DRM_MODE_FLAG_NHSYNC;

	if (tmp & ADPA_VSYNC_ACTIVE_HIGH)
		flags |= DRM_MODE_FLAG_PVSYNC;
	else
		flags |= DRM_MODE_FLAG_NVSYNC;

	return flags;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jesse barnes
jesse barnes
77
91.67%
1
50.00%
ville syrjala
ville syrjala
7
8.33%
1
50.00%
Total
84
100.00%
2
100.00%



static void intel_crt_get_config(struct intel_encoder *encoder,
				 struct intel_crtc_state *pipe_config)
{
	pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder);

	pipe_config->base.adjusted_mode.crtc_clock = pipe_config->port_clock;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
ville syrjala
ville syrjala
27
65.85%
3
42.86%
jesse barnes
jesse barnes
8
19.51%
1
14.29%
ander conselvan de oliveira
ander conselvan de oliveira
5
12.20%
2
28.57%
damien lespiau
damien lespiau
1
2.44%
1
14.29%
Total
41
100.00%
7
100.00%



static void hsw_crt_get_config(struct intel_encoder *encoder,
			       struct intel_crtc_state *pipe_config)
{
	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);

	intel_ddi_get_config(encoder, pipe_config);

	pipe_config->base.adjusted_mode.flags &= ~(DRM_MODE_FLAG_PHSYNC |
					      DRM_MODE_FLAG_NHSYNC |
					      DRM_MODE_FLAG_PVSYNC |
					      DRM_MODE_FLAG_NVSYNC);
	pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder);

	pipe_config->base.adjusted_mode.crtc_clock = lpt_get_iclkip(dev_priv);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
ville syrjala
ville syrjala
77
93.90%
2
50.00%
ander conselvan de oliveira
ander conselvan de oliveira
5
6.10%
2
50.00%
Total
82
100.00%
4
100.00%

/* Note: The caller is required to filter out dpms modes not supported by the
 * platform. */


static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode)
{
	struct drm_device *dev = encoder->base.dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_crt *crt = intel_encoder_to_crt(encoder);
	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
	const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
	u32 adpa;

	if (INTEL_INFO(dev)->gen >= 5)
		adpa = ADPA_HOTPLUG_BITS;
	else
		adpa = 0;

	if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
		adpa |= ADPA_HSYNC_ACTIVE_HIGH;
	if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
		adpa |= ADPA_VSYNC_ACTIVE_HIGH;

	/* For CPT allow 3 pipe config, for others just use A or B */
	if (HAS_PCH_LPT(dev))
		; /* Those bits don't exist here */
	else if (HAS_PCH_CPT(dev))
		adpa |= PORT_TRANS_SEL_CPT(crtc->pipe);
	else if (crtc->pipe == 0)
		adpa |= ADPA_PIPE_A_SELECT;
	else
		adpa |= ADPA_PIPE_B_SELECT;

	if (!HAS_PCH_SPLIT(dev))
		I915_WRITE(BCLRPAT(crtc->pipe), 0);

	switch (mode) {
	case DRM_MODE_DPMS_ON:
		adpa |= ADPA_DAC_ENABLE;
		break;
	case DRM_MODE_DPMS_STANDBY:
		adpa |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
		break;
	case DRM_MODE_DPMS_SUSPEND:
		adpa |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
		break;
	case DRM_MODE_DPMS_OFF:
		adpa |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
		break;
	}

	I915_WRITE(crt->adpa_reg, adpa);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
daniel vetter
daniel vetter
151
63.45%
2
25.00%
jesse barnes
jesse barnes
78
32.77%
2
25.00%
zhenyu wang
zhenyu wang
5
2.10%
1
12.50%
ander conselvan de oliveira
ander conselvan de oliveira
3
1.26%
2
25.00%
ville syrjala
ville syrjala
1
0.42%
1
12.50%
Total
238
100.00%
8
100.00%



static void intel_disable_crt(struct intel_encoder *encoder)
{
	intel_crt_set_dpms(encoder, DRM_MODE_DPMS_OFF);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
adam jackson
adam jackson
18
100.00%
1
100.00%
Total
18
100.00%
1
100.00%



static void pch_disable_crt(struct intel_encoder *encoder)
{
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
ville syrjala
ville syrjala
10
100.00%
1
100.00%
Total
10
100.00%
1
100.00%



static void pch_post_disable_crt(struct intel_encoder *encoder)
{
	intel_disable_crt(encoder);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
ville syrjala
ville syrjala
16
100.00%
1
100.00%
Total
16
100.00%
1
100.00%



static void intel_enable_crt(struct intel_encoder *encoder)
{
	intel_crt_set_dpms(encoder, DRM_MODE_DPMS_ON);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
adam jackson
adam jackson
17
94.44%
1
50.00%
maarten lankhorst
maarten lankhorst
1
5.56%
1
50.00%
Total
18
100.00%
2
100.00%


static enum drm_mode_status

intel_crt_mode_valid(struct drm_connector *connector,
		     struct drm_display_mode *mode)
{
	struct drm_device *dev = connector->dev;
	int max_dotclk = to_i915(dev)->max_dotclk_freq;
	int max_clock;

	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
		return MODE_NO_DBLESCAN;

	if (mode->clock < 25000)
		return MODE_CLOCK_LOW;

	if (HAS_PCH_LPT(dev))
		max_clock = 180000;
	else if (IS_VALLEYVIEW(dev))
		/*
                 * 270 MHz due to current DPLL limits,
                 * DAC limit supposedly 355 MHz.
                 */
		max_clock = 270000;
	else if (IS_GEN3(dev) || IS_GEN4(dev))
		max_clock = 400000;
	else
		max_clock = 350000;
	if (mode->clock > max_clock)
		return MODE_CLOCK_HIGH;

	if (mode->clock > max_dotclk)
		return MODE_CLOCK_HIGH;

	/* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
	if (HAS_PCH_LPT(dev) &&
	    (ironlake_get_lanes_required(mode->clock, 270000, 24) > 2))
		return MODE_CLOCK_HIGH;

	return MODE_OK;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jesse barnes
jesse barnes
41
25.95%
1
16.67%
yakui zhao
yakui zhao
35
22.15%
1
16.67%
ville syrjala
ville syrjala
33
20.89%
1
16.67%
paulo zanoni
paulo zanoni
26
16.46%
1
16.67%
mika kahola
mika kahola
21
13.29%
1
16.67%
damien lespiau
damien lespiau
2
1.27%
1
16.67%
Total
158
100.00%
6
100.00%



static bool intel_crt_compute_config(struct intel_encoder *encoder,
				     struct intel_crtc_state *pipe_config)
{
	struct drm_device *dev = encoder->base.dev;

	if (HAS_PCH_SPLIT(dev))
		pipe_config->has_pch_encoder = true;

	/* LPT FDI RX only supports 8bpc. */
	if (HAS_PCH_LPT(dev)) {
		if (pipe_config->bw_constrained && pipe_config->pipe_bpp < 24) {
			DRM_DEBUG_KMS("LPT only supports 24bpp\n");
			return false;
		}

		pipe_config->pipe_bpp = 24;
	}

	/* FDI must always be 2.7 GHz */
	if (HAS_DDI(dev))
		pipe_config->port_clock = 135000 * 2;

	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
daniel vetter
daniel vetter
65
67.01%
3
50.00%
ville syrjala
ville syrjala
16
16.49%
1
16.67%
jesse barnes
jesse barnes
15
15.46%
1
16.67%
ander conselvan de oliveira
ander conselvan de oliveira
1
1.03%
1
16.67%
Total
97
100.00%
6
100.00%



static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct intel_crt *crt = intel_attached_crt(connector);
	struct drm_i915_private *dev_priv = dev->dev_private;
	u32 adpa;
	bool ret;

	/* The first time through, trigger an explicit detection cycle */
	if (crt->force_hotplug_required) {
		bool turn_off_dac = HAS_PCH_SPLIT(dev);
		u32 save_adpa;

		crt->force_hotplug_required = 0;

		save_adpa = adpa = I915_READ(crt->adpa_reg);
		DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);

		adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
		if (turn_off_dac)
			adpa &= ~ADPA_DAC_ENABLE;

		I915_WRITE(crt->adpa_reg, adpa);

		if (wait_for((I915_READ(crt->adpa_reg) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
			     1000))
			DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");

		if (turn_off_dac) {
			I915_WRITE(crt->adpa_reg, save_adpa);
			POSTING_READ(crt->adpa_reg);
		}
	}

	/* Check the status to see if both blue and green are on now */
	adpa = I915_READ(crt->adpa_reg);
	if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
		ret = true;
	else
		ret = false;
	DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa, ret);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
zhenyu wang
zhenyu wang
103
51.76%
3
33.33%
keith packard
keith packard
54
27.14%
1
11.11%
ville syrjala
ville syrjala
18
9.05%
1
11.11%
chris wilson
chris wilson
12
6.03%
2
22.22%
dave airlie
dave airlie
11
5.53%
1
11.11%
adam jackson
adam jackson
1
0.50%
1
11.11%
Total
199
100.00%
9
100.00%



static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct intel_crt *crt = intel_attached_crt(connector);
	struct drm_i915_private *dev_priv = dev->dev_private;
	u32 adpa;
	bool ret;
	u32 save_adpa;

	save_adpa = adpa = I915_READ(crt->adpa_reg);
	DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);

	adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;

	I915_WRITE(crt->adpa_reg, adpa);

	if (wait_for((I915_READ(crt->adpa_reg) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
		     1000)) {
		DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
		I915_WRITE(crt->adpa_reg, save_adpa);
	}

	/* Check the status to see if both blue and green are on now */
	adpa = I915_READ(crt->adpa_reg);
	if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
		ret = true;
	else
		ret = false;

	DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa, ret);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jesse barnes
jesse barnes
131
83.97%
1
50.00%
ville syrjala
ville syrjala
25
16.03%
1
50.00%
Total
156
100.00%
2
100.00%

/**
 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
 *
 * Not for i915G/i915GM
 *
 * \return true if CRT is connected.
 * \return false if CRT is disconnected.
 */


static bool intel_crt_detect_hotplug(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	u32 stat;
	bool ret = false;
	int i, tries = 0;

	if (HAS_PCH_SPLIT(dev))
		return intel_ironlake_crt_detect_hotplug(connector);

	if (IS_VALLEYVIEW(dev))
		return valleyview_crt_detect_hotplug(connector);

	/*
         * On 4 series desktop, CRT detect sequence need to be done twice
         * to get a reliable result.
         */

	if (IS_G4X(dev) && !IS_GM45(dev))
		tries = 2;
	else
		tries = 1;

	for (i = 0; i < tries ; i++) {
		/* turn on the FORCE_DETECT */
		i915_hotplug_interrupt_update(dev_priv,
					      CRT_HOTPLUG_FORCE_DETECT,
					      CRT_HOTPLUG_FORCE_DETECT);
		/* wait for FORCE_DETECT to go off */
		if (wait_for((I915_READ(PORT_HOTPLUG_EN) &
			      CRT_HOTPLUG_FORCE_DETECT) == 0,
			     1000))
			DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
	}

	stat = I915_READ(PORT_HOTPLUG_STAT);
	if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE)
		ret = true;

	/* clear the interrupt we just generated, if any */
	I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);

	i915_hotplug_interrupt_update(dev_priv, CRT_HOTPLUG_FORCE_DETECT, 0);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jesse barnes
jesse barnes
75
40.98%
2
18.18%
yakui zhao
yakui zhao
44
24.04%
1
9.09%
adam jackson
adam jackson
30
16.39%
2
18.18%
zhenyu wang
zhenyu wang
13
7.10%
2
18.18%
chris wilson
chris wilson
10
5.46%
2
18.18%
egbert eich
egbert eich
10
5.46%
1
9.09%
eric anholt
eric anholt
1
0.55%
1
9.09%
Total
183
100.00%
11
100.00%



static struct edid *intel_crt_get_edid(struct drm_connector *connector,
				struct i2c_adapter *i2c)
{
	struct edid *edid;

	edid = drm_get_edid(connector, i2c);

	if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
		DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
		intel_gmbus_force_bit(i2c, true);
		edid = drm_get_edid(connector, i2c);
		intel_gmbus_force_bit(i2c, false);
	}

	return edid;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jani nikula
jani nikula
76
100.00%
1
100.00%
Total
76
100.00%
1
100.00%

/* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */


static int intel_crt_ddc_get_modes(struct drm_connector *connector,
				struct i2c_adapter *adapter)
{
	struct edid *edid;
	int ret;

	edid = intel_crt_get_edid(connector, adapter);
	if (!edid)
		return 0;

	ret = intel_connector_update_modes(connector, edid);
	kfree(edid);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jani nikula
jani nikula
58
100.00%
2
100.00%
Total
58
100.00%
2
100.00%



static bool intel_crt_detect_ddc(struct drm_connector *connector)
{
	struct intel_crt *crt = intel_attached_crt(connector);
	struct drm_i915_private *dev_priv = crt->base.base.dev->dev_private;
	struct edid *edid;
	struct i2c_adapter *i2c;

	BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);

	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
	edid = intel_crt_get_edid(connector, i2c);

	if (edid) {
		bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;

		/*
                 * This may be a DVI-I connector with a shared DDC
                 * link between analog and digital outputs, so we
                 * have to check the EDID input spec of the attached device.
                 */
		if (!is_digital) {
			DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
			return true;
		}

		DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
	} else {
		DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
	}

	kfree(edid);

	return false;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
david mueller
david mueller
43
32.82%
1
10.00%
chris wilson
chris wilson
31
23.66%
4
40.00%
daniel vetter
daniel vetter
27
20.61%
1
10.00%
daniel kurtz
daniel kurtz
16
12.21%
1
10.00%
jesse barnes
jesse barnes
11
8.40%
1
10.00%
rodrigo vivi
rodrigo vivi
2
1.53%
1
10.00%
jani nikula
jani nikula
1
0.76%
1
10.00%
Total
131
100.00%
10
100.00%


static enum drm_connector_status

intel_crt_load_detect(struct intel_crt *crt, uint32_t pipe)
{
	struct drm_device *dev = crt->base.base.dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	uint32_t save_bclrpat;
	uint32_t save_vtotal;
	uint32_t vtotal, vactive;
	uint32_t vsample;
	uint32_t vblank, vblank_start, vblank_end;
	uint32_t dsl;
	i915_reg_t bclrpat_reg, vtotal_reg,
		vblank_reg, vsync_reg, pipeconf_reg, pipe_dsl_reg;
	uint8_t	st00;
	enum drm_connector_status status;

	DRM_DEBUG_KMS("starting load-detect on CRT\n");

	bclrpat_reg = BCLRPAT(pipe);
	vtotal_reg = VTOTAL(pipe);
	vblank_reg = VBLANK(pipe);
	vsync_reg = VSYNC(pipe);
	pipeconf_reg = PIPECONF(pipe);
	pipe_dsl_reg = PIPEDSL(pipe);

	save_bclrpat = I915_READ(bclrpat_reg);
	save_vtotal = I915_READ(vtotal_reg);
	vblank = I915_READ(vblank_reg);

	vtotal = ((save_vtotal >> 16) & 0xfff) + 1;
	vactive = (save_vtotal & 0x7ff) + 1;

	vblank_start = (vblank & 0xfff) + 1;
	vblank_end = ((vblank >> 16) & 0xfff) + 1;

	/* Set the border color to purple. */
	I915_WRITE(bclrpat_reg, 0x500050);

	if (!IS_GEN2(dev)) {
		uint32_t pipeconf = I915_READ(pipeconf_reg);
		I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER);
		POSTING_READ(pipeconf_reg);
		/* Wait for next Vblank to substitue
                 * border color for Color info */
		intel_wait_for_vblank(dev, pipe);
		st00 = I915_READ8(_VGA_MSR_WRITE);
		status = ((st00 & (1 << 4)) != 0) ?
			connector_status_connected :
			connector_status_disconnected;

		I915_WRITE(pipeconf_reg, pipeconf);
	} else {
		bool restore_vblank = false;
		int count, detect;

		/*
                * If there isn't any border, add some.
                * Yes, this will flicker
                */
		if (vblank_start <= vactive && vblank_end >= vtotal) {
			uint32_t vsync = I915_READ(vsync_reg);
			uint32_t vsync_start = (vsync & 0xffff) + 1;

			vblank_start = vsync_start;
			I915_WRITE(vblank_reg,
				   (vblank_start - 1) |
				   ((vblank_end - 1) << 16));
			restore_vblank = true;
		}
		/* sample in the vertical border, selecting the larger one */
		if (vblank_start - vactive >= vtotal - vblank_end)
			vsample = (vblank_start + vactive) >> 1;
		else
			vsample = (vtotal + vblank_end) >> 1;

		/*
                 * Wait for the border to be displayed
                 */
		while (I915_READ(pipe_dsl_reg) >= vactive)
			;
		while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample)
			;
		/*
                 * Watch ST00 for an entire scanline
                 */
		detect = 0;
		count = 0;
		do {
			count++;
			/* Read the ST00 VGA status register */
			st00 = I915_READ8(_VGA_MSR_WRITE);
			if (st00 & (1 << 4))
				detect++;
		} while ((I915_READ(pipe_dsl_reg) == dsl));

		/* restore vblank if necessary */
		if (restore_vblank)
			I915_WRITE(vblank_reg, vblank);
		/*
                 * If more than 3/4 of the scanline detected a monitor,
                 * then it is assumed to be present. This works even on i830,
                 * where there isn't any way to force the border color across
                 * the screen
                 */
		status = detect * 4 > count * 3 ?
			 connector_status_connected :
			 connector_status_disconnected;
	}

	/* Restore previous settings */
	I915_WRITE(bclrpat_reg, save_bclrpat);

	return status;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
ling ma
ling ma
437
88.10%
1
9.09%
jesse barnes
jesse barnes
26
5.24%
2
18.18%
chris wilson
chris wilson
22
4.44%
6
54.55%
ville syrjala
ville syrjala
8
1.61%
1
9.09%
maarten lankhorst
maarten lankhorst
3
0.60%
1
9.09%
Total
496
100.00%
11
100.00%


static enum drm_connector_status

intel_crt_detect(struct drm_connector *connector, bool force)
{
	struct drm_device *dev = connector->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_crt *crt = intel_attached_crt(connector);
	struct intel_encoder *intel_encoder = &crt->base;
	enum intel_display_power_domain power_domain;
	enum drm_connector_status status;
	struct intel_load_detect_pipe tmp;
	struct drm_modeset_acquire_ctx ctx;

	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
		      connector->base.id, connector->name,
		      force);

	power_domain = intel_display_port_power_domain(intel_encoder);
	intel_display_power_get(dev_priv, power_domain);

	if (I915_HAS_HOTPLUG(dev)) {
		/* We can not rely on the HPD pin always being correctly wired
                 * up, for example many KVM do not pass it through, and so
                 * only trust an assertion that the monitor is connected.
                 */
		if (intel_crt_detect_hotplug(connector)) {
			DRM_DEBUG_KMS("CRT detected via hotplug\n");
			status = connector_status_connected;
			goto out;
		} else
			DRM_DEBUG_KMS("CRT not detected via hotplug\n");
	}

	if (intel_crt_detect_ddc(connector)) {
		status = connector_status_connected;
		goto out;
	}

	/* Load detection is broken on HPD capable machines. Whoever wants a
         * broken monitor (without edid) to work behind a broken kvm (that fails
         * to have the right resistors for HP detection) needs to fix this up.
         * For now just bail out. */
	if (I915_HAS_HOTPLUG(dev) && !i915.load_detect_test) {
		status = connector_status_disconnected;
		goto out;
	}

	if (!force) {
		status = connector->status;
		goto out;
	}

	drm_modeset_acquire_init(&ctx, 0);

	/* for pre-945g platforms use load detect */
	if (intel_get_load_detect_pipe(connector, NULL, &tmp, &ctx)) {
		if (intel_crt_detect_ddc(connector))
			status = connector_status_connected;
		else if (INTEL_INFO(dev)->gen < 4)
			status = intel_crt_load_detect(crt,
				to_intel_crtc(connector->state->crtc)->pipe);
		else if (i915.load_detect_test)
			status = connector_status_disconnected;
		else
			status = connector_status_unknown;
		intel_release_load_detect_pipe(connector, &tmp, &ctx);
	} else
		status = connector_status_unknown;

	drm_modeset_drop_locks(&ctx);
	drm_modeset_acquire_fini(&ctx);

out:
	intel_display_power_put(dev_priv, power_domain);
	return status;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
chris wilson
chris wilson
53
16.88%
8
33.33%
jesse barnes
jesse barnes
46
14.65%
1
4.17%
paulo zanoni
paulo zanoni
41
13.06%
1
4.17%
ling ma
ling ma
37
11.78%
1
4.17%
daniel vetter
daniel vetter
36
11.46%
3
12.50%
imre deak
imre deak
35
11.15%
1
4.17%
maarten lankhorst
maarten lankhorst
22
7.01%
2
8.33%
ville syrjala
ville syrjala
20
6.37%
1
4.17%
rob clark
rob clark
7
2.23%
1
4.17%
keith packard
keith packard
6
1.91%
1
4.17%
zhenyu wang
zhenyu wang
4
1.27%
1
4.17%
ander conselvan de oliveira
ander conselvan de oliveira
3
0.96%
1
4.17%
jani nikula
jani nikula
2
0.64%
1
4.17%
david mueller
david mueller
2
0.64%
1
4.17%
Total
314
100.00%
24
100.00%



static void intel_crt_destroy(struct drm_connector *connector)
{
	drm_connector_cleanup(connector);
	kfree(connector);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jesse barnes
jesse barnes
21
100.00%
1
100.00%
Total
21
100.00%
1
100.00%



static int intel_crt_get_modes(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_crt *crt = intel_attached_crt(connector);
	struct intel_encoder *intel_encoder = &crt->base;
	enum intel_display_power_domain power_domain;
	int ret;
	struct i2c_adapter *i2c;

	power_domain = intel_display_port_power_domain(intel_encoder);
	intel_display_power_get(dev_priv, power_domain);

	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
	ret = intel_crt_ddc_get_modes(connector, i2c);
	if (ret || !IS_G4X(dev))
		goto out;

	/* Try to probe digital port for output in DVI-I -> VGA mode. */
	i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPB);
	ret = intel_crt_ddc_get_modes(connector, i2c);

out:
	intel_display_power_put(dev_priv, power_domain);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
imre deak
imre deak
55
39.01%
1
9.09%
daniel kurtz
daniel kurtz
25
17.73%
1
9.09%
ling ma
ling ma
21
14.89%
1
9.09%
chris wilson
chris wilson
15
10.64%
2
18.18%
jesse barnes
jesse barnes
14
9.93%
1
9.09%
zhenyu wang
zhenyu wang
6
4.26%
2
18.18%
jani nikula
jani nikula
3
2.13%
2
18.18%
rodrigo vivi
rodrigo vivi
2
1.42%
1
9.09%
Total
141
100.00%
11
100.00%



static int intel_crt_set_property(struct drm_connector *connector,
				  struct drm_property *property,
				  uint64_t value)
{
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
jesse barnes
jesse barnes
22
100.00%
1
100.00%
Total
22
100.00%
1
100.00%



static void intel_crt_reset(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct intel_crt *crt = intel_attached_crt(connector);

	if (INTEL_INFO(dev)->gen >= 5) {
		u32 adpa;

		adpa = I915_READ(crt->adpa_reg);
		adpa &= ~ADPA_CRT_HOTPLUG_MASK;
		adpa |= ADPA_HOTPLUG_BITS;
		I915_WRITE(crt->adpa_reg, adpa);
		POSTING_READ(crt->adpa_reg);

		DRM_DEBUG_KMS("crt adpa set to 0x%x\n", adpa);
		crt->force_hotplug_required = 1;
	}

}

Contributors
Person
Tokens
Prop
Commits
CommitProp
chris wilson
chris wilson
47
46.08%
2
40.00%
daniel vetter
daniel vetter
45
44.12%
1
20.00%
ville syrjala
ville syrjala
10
9.80%
2
40.00%
Total
102
100.00%
5
100.00%

/*
 * Routines for controlling stuff on the analog port
 */


static const struct drm_connector_funcs intel_crt_connector_funcs = {
	.reset = intel_crt_reset,
	.dpms = drm_atomic_helper_connector_dpms,
	.detect = intel_crt_detect,
	.fill_modes = drm_helper_probe_single_connector_modes,
	.destroy = intel_crt_destroy,
	.set_property = intel_crt_set_property,
	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
	.atomic_get_property = intel_connector_atomic_get_property,
};


static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = {
	.mode_valid = intel_crt_mode_valid,
	.get_modes = intel_crt_get_modes,
	.best_encoder = intel_best_encoder,
};


static const struct drm_encoder_funcs intel_crt_enc_funcs = {
	.destroy = intel_encoder_destroy,
};



static int intel_no_crt_dmi_callback(const struct dmi_system_id *id)
{
	DRM_INFO("Skipping CRT initialization for %s\n", id->ident);
	return 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
duncan laurie
duncan laurie
23
95.83%
1
50.00%
daniel vetter
daniel vetter
1
4.17%
1
50.00%
Total
24
100.00%
2
100.00%


static const struct dmi_system_id intel_no_crt[] = {
	{
		.callback = intel_no_crt_dmi_callback,
		.ident = "ACER ZGB",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
			DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
                },
        },
	{
		.callback = intel_no_crt_dmi_callback,
		.ident = "DELL XPS 8700",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
			DMI_MATCH(DMI_PRODUCT_NAME, "XPS 8700"),
                },
        },
	{ }
};



void intel_crt_init(struct drm_device *dev)
{
	struct drm_connector *connector;
	struct intel_crt *crt;
	struct intel_connector *intel_connector;
	struct drm_i915_private *dev_priv = dev->dev_private;
	i915_reg_t adpa_reg;
	u32 adpa;

	/* Skip machines without VGA that falsely report hotplug events */
	if (dmi_check_system(intel_no_crt))
		return;

	if (HAS_PCH_SPLIT(dev))
		adpa_reg = PCH_ADPA;
	else if (IS_VALLEYVIEW(dev))
		adpa_reg = VLV_ADPA;
	else
		adpa_reg = ADPA;

	adpa = I915_READ(adpa_reg);
	if ((adpa & ADPA_DAC_ENABLE) == 0) {
		/*
                 * On some machines (some IVB at least) CRT can be
                 * fused off, but there's no known fuse bit to
                 * indicate that. On these machine the ADPA register
                 * works normally, except the DAC enable bit won't
                 * take. So the only way to tell is attempt to enable
                 * it and see what happens.
                 */
		I915_WRITE(adpa_reg, adpa | ADPA_DAC_ENABLE |
			   ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
		if ((I915_READ(adpa_reg) & ADPA_DAC_ENABLE) == 0)
			return;
		I915_WRITE(adpa_reg, adpa);
	}

	crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL);
	if (!crt)
		return;

	intel_connector = intel_connector_alloc();
	if (!intel_connector) {
		kfree(crt);
		return;
	}

	connector = &intel_connector->base;
	crt->connector = intel_connector;
	drm_connector_init(dev, &intel_connector->base,
			   &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);

	drm_encoder_init(dev, &crt->base.base, &intel_crt_enc_funcs,
			 DRM_MODE_ENCODER_DAC, NULL);

	intel_connector_attach_encoder(intel_connector, &crt->base);

	crt->base.type = INTEL_OUTPUT_ANALOG;
	crt->base.cloneable = (1 << INTEL_OUTPUT_DVO) | (1 << INTEL_OUTPUT_HDMI);
	if (IS_I830(dev))
		crt->base.crtc_mask = (1 << 0);
	else
		crt->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);

	if (IS_GEN2(dev))
		connector->interlace_allowed = 0;
	else
		connector->interlace_allowed = 1;
	connector->doublescan_allowed = 0;

	crt->adpa_reg = adpa_reg;

	crt->base.compute_config = intel_crt_compute_config;
	if (HAS_PCH_SPLIT(dev)) {
		crt->base.disable = pch_disable_crt;
		crt->base.post_disable = pch_post_disable_crt;
	} else {
		crt->base.disable = intel_disable_crt;
	}
	crt->base.enable = intel_enable_crt;
	if (I915_HAS_HOTPLUG(dev))
		crt->base.hpd_pin = HPD_CRT;
	if (HAS_DDI(dev)) {
		crt->base.get_config = hsw_crt_get_config;
		crt->base.get_hw_state = intel_ddi_get_hw_state;
	} else {
		crt->base.get_config = intel_crt_get_config;
		crt->base.get_hw_state = intel_crt_get_hw_state;
	}
	intel_connector->get_hw_state = intel_connector_get_hw_state;
	intel_connector->unregister = intel_connector_unregister;

	drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);

	drm_connector_register(connector);

	if (!I915_HAS_HOTPLUG(dev))
		intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;

	/*
         * Configure the automatic hotplug detection stuff
         */
	crt->force_hotplug_required = 0;

	/*
         * TODO: find a proper way to discover whether we need to set the the
         * polarity and link reversal bits or not, instead of relying on the
         * BIOS.
         */
	if (HAS_PCH_LPT(dev)) {
		u32 fdi_config = FDI_RX_POLARITY_REVERSED_LPT |
				 FDI_RX_LINK_REVERSAL_OVERRIDE;

		dev_priv->fdi_rx_config = I915_READ(FDI_RX_CTL(PIPE_A)) & fdi_config;
	}

	intel_crt_reset(connector);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
ville syrjala
ville syrjala
161
30.96%
8
20.00%
jesse barnes
jesse barnes
102
19.62%
3
7.50%
daniel vetter
daniel vetter
67
12.88%
8
20.00%
paulo zanoni
paulo zanoni
26
5.00%
2
5.00%
chris wilson
chris wilson
24
4.62%
3
7.50%
zhenyu wang
zhenyu wang
23
4.42%
1
2.50%
ling ma
ling ma
18
3.46%
1
2.50%
eugeni dodonov
eugeni dodonov
16
3.08%
1
2.50%
keith packard
keith packard
13
2.50%
2
5.00%
damien lespiau
damien lespiau
12
2.31%
1
2.50%
egbert eich
egbert eich
12
2.31%
2
5.00%
dave airlie
dave airlie
12
2.31%
1
2.50%
duncan laurie
duncan laurie
9
1.73%
1
2.50%
david mueller
david mueller
9
1.73%
1
2.50%
imre deak
imre deak
6
1.15%
1
2.50%
adam jackson
adam jackson
6
1.15%
1
2.50%
ander conselvan de oliveira
ander conselvan de oliveira
2
0.38%
1
2.50%
krzysztof halasa
krzysztof halasa
1
0.19%
1
2.50%
thomas wood
thomas wood
1
0.19%
1
2.50%
Total
520
100.00%
40
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
jesse barnes
jesse barnes
775
21.42%
6
4.76%
ling ma
ling ma
513
14.18%
3
2.38%
daniel vetter
daniel vetter
488
13.49%
19
15.08%
ville syrjala
ville syrjala
430
11.89%
18
14.29%
chris wilson
chris wilson
250
6.91%
19
15.08%
zhenyu wang
zhenyu wang
154
4.26%
7
5.56%
imre deak
imre deak
144
3.98%
4
3.17%
jani nikula
jani nikula
141
3.90%
4
3.17%
paulo zanoni
paulo zanoni
93
2.57%
4
3.17%
keith packard
keith packard
85
2.35%
3
2.38%
yakui zhao
yakui zhao
79
2.18%
2
1.59%
adam jackson
adam jackson
78
2.16%
3
2.38%
duncan laurie
duncan laurie
77
2.13%
1
0.79%
david mueller
david mueller
56
1.55%
2
1.59%
daniel kurtz
daniel kurtz
41
1.13%
1
0.79%
giacomo comes
giacomo comes
31
0.86%
1
0.79%
maarten lankhorst
maarten lankhorst
27
0.75%
4
3.17%
ander conselvan de oliveira
ander conselvan de oliveira
24
0.66%
6
4.76%
dave airlie
dave airlie
23
0.64%
2
1.59%
egbert eich
egbert eich
22
0.61%
3
2.38%
mika kahola
mika kahola
21
0.58%
1
0.79%
eugeni dodonov
eugeni dodonov
16
0.44%
1
0.79%
damien lespiau
damien lespiau
15
0.41%
3
2.38%
matt roper
matt roper
13
0.36%
2
1.59%
rob clark
rob clark
7
0.19%
1
0.79%
david howells
david howells
5
0.14%
1
0.79%
rodrigo vivi
rodrigo vivi
4
0.11%
1
0.79%
tejun heo
tejun heo
3
0.08%
1
0.79%
krzysztof halasa
krzysztof halasa
1
0.03%
1
0.79%
thomas wood
thomas wood
1
0.03%
1
0.79%
eric anholt
eric anholt
1
0.03%
1
0.79%
Total
3618
100.00%
126
100.00%
  
Directory: drivers/gpu/drm/i915

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.