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Commit 05a05c50 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms: add hpd support for r1xx-r4xx asics 



This just adds the functionality, it's not hooked up
yet.

Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent b500f680

drivers/gpu/drm/radeon/r100.c

+104 −2
Original line number Diff line number Diff line
@@ -65,6 +65,95 @@ MODULE_FIRMWARE(FIRMWARE_R520); 
 * r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280

 */



/* hpd for digital panel detect/disconnect */

bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)

{

	bool connected = false;



	switch (hpd) {

	case RADEON_HPD_1:

		if (RREG32(RADEON_FP_GEN_CNTL) & RADEON_FP_DETECT_SENSE)

			connected = true;

		break;

	case RADEON_HPD_2:

		if (RREG32(RADEON_FP2_GEN_CNTL) & RADEON_FP2_DETECT_SENSE)

			connected = true;

		break;

	default:

		break;

	}

	return connected;

}



void r100_hpd_set_polarity(struct radeon_device *rdev,

			   enum radeon_hpd_id hpd)

{

	u32 tmp;

	bool connected = r100_hpd_sense(rdev, hpd);



	switch (hpd) {

	case RADEON_HPD_1:

		tmp = RREG32(RADEON_FP_GEN_CNTL);

		if (connected)

			tmp &= ~RADEON_FP_DETECT_INT_POL;

		else

			tmp |= RADEON_FP_DETECT_INT_POL;

		WREG32(RADEON_FP_GEN_CNTL, tmp);

		break;

	case RADEON_HPD_2:

		tmp = RREG32(RADEON_FP2_GEN_CNTL);

		if (connected)

			tmp &= ~RADEON_FP2_DETECT_INT_POL;

		else

			tmp |= RADEON_FP2_DETECT_INT_POL;

		WREG32(RADEON_FP2_GEN_CNTL, tmp);

		break;

	default:

		break;

	}

}



void r100_hpd_init(struct radeon_device *rdev)

{

	struct drm_device *dev = rdev->ddev;

	struct drm_connector *connector;



	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		struct radeon_connector *radeon_connector = to_radeon_connector(connector);

		switch (radeon_connector->hpd.hpd) {

		case RADEON_HPD_1:

			rdev->irq.hpd[0] = true;

			break;

		case RADEON_HPD_2:

			rdev->irq.hpd[1] = true;

			break;

		default:

			break;

		}

	}

	r100_irq_set(rdev);

}



void r100_hpd_fini(struct radeon_device *rdev)

{

	struct drm_device *dev = rdev->ddev;

	struct drm_connector *connector;



	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {

		struct radeon_connector *radeon_connector = to_radeon_connector(connector);

		switch (radeon_connector->hpd.hpd) {

		case RADEON_HPD_1:

			rdev->irq.hpd[0] = false;

			break;

		case RADEON_HPD_2:

			rdev->irq.hpd[1] = false;

			break;

		default:

			break;

		}

	}

}



/*

 * PCI GART

 */
@@ -163,6 +252,12 @@ int r100_irq_set(struct radeon_device *rdev) 
	if (rdev->irq.crtc_vblank_int[1]) {

		tmp |= RADEON_CRTC2_VBLANK_MASK;

	}

	if (rdev->irq.hpd[0]) {

		tmp |= RADEON_FP_DETECT_MASK;

	}

	if (rdev->irq.hpd[1]) {

		tmp |= RADEON_FP2_DETECT_MASK;

	}

	WREG32(RADEON_GEN_INT_CNTL, tmp);

	return 0;

}
@@ -181,8 +276,9 @@ void r100_irq_disable(struct radeon_device *rdev) 
static inline uint32_t r100_irq_ack(struct radeon_device *rdev)

{

	uint32_t irqs = RREG32(RADEON_GEN_INT_STATUS);

	uint32_t irq_mask = RADEON_SW_INT_TEST | RADEON_CRTC_VBLANK_STAT |

		RADEON_CRTC2_VBLANK_STAT;

	uint32_t irq_mask = RADEON_SW_INT_TEST |

		RADEON_CRTC_VBLANK_STAT | RADEON_CRTC2_VBLANK_STAT |

		RADEON_FP_DETECT_STAT | RADEON_FP2_DETECT_STAT;



	if (irqs) {

		WREG32(RADEON_GEN_INT_STATUS, irqs);
@@ -213,6 +309,12 @@ int r100_irq_process(struct radeon_device *rdev) 
		if (status & RADEON_CRTC2_VBLANK_STAT) {

			drm_handle_vblank(rdev->ddev, 1);

		}

		if (status & RADEON_FP_DETECT_STAT) {

			DRM_INFO("HPD1\n");

		}

		if (status & RADEON_FP2_DETECT_STAT) {

			DRM_INFO("HPD2\n");

		}

		status = r100_irq_ack(rdev);

	}

	if (rdev->msi_enabled) {