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Commit e0df1ac5 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms: add hpd support for r6xx/r7xx/rs780/rs880 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 dcfdd408

drivers/gpu/drm/radeon/r600.c

+485 −23
Original line number Diff line number Diff line
@@ -74,6 +74,281 @@ int r600_mc_wait_for_idle(struct radeon_device *rdev); 
void r600_gpu_init(struct radeon_device *rdev);

void r600_fini(struct radeon_device *rdev);



/* hpd for digital panel detect/disconnect */

bool r600_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)

{

	bool connected = false;



	if (ASIC_IS_DCE3(rdev)) {

		switch (hpd) {

		case RADEON_HPD_1:

			if (RREG32(DC_HPD1_INT_STATUS) & DC_HPDx_SENSE)

				connected = true;

			break;

		case RADEON_HPD_2:

			if (RREG32(DC_HPD2_INT_STATUS) & DC_HPDx_SENSE)

				connected = true;

			break;

		case RADEON_HPD_3:

			if (RREG32(DC_HPD3_INT_STATUS) & DC_HPDx_SENSE)

				connected = true;

			break;

		case RADEON_HPD_4:

			if (RREG32(DC_HPD4_INT_STATUS) & DC_HPDx_SENSE)

				connected = true;

			break;

			/* DCE 3.2 */

		case RADEON_HPD_5:

			if (RREG32(DC_HPD5_INT_STATUS) & DC_HPDx_SENSE)

				connected = true;

			break;

		case RADEON_HPD_6:

			if (RREG32(DC_HPD6_INT_STATUS) & DC_HPDx_SENSE)

				connected = true;

			break;

		default:

			break;

		}

	} else {

		switch (hpd) {

		case RADEON_HPD_1:

			if (RREG32(DC_HOT_PLUG_DETECT1_INT_STATUS) & DC_HOT_PLUG_DETECTx_SENSE)

				connected = true;

			break;

		case RADEON_HPD_2:

			if (RREG32(DC_HOT_PLUG_DETECT2_INT_STATUS) & DC_HOT_PLUG_DETECTx_SENSE)

				connected = true;

			break;

		case RADEON_HPD_3:

			if (RREG32(DC_HOT_PLUG_DETECT3_INT_STATUS) & DC_HOT_PLUG_DETECTx_SENSE)

				connected = true;

			break;

		default:

			break;

		}

	}

	return connected;

}



void r600_hpd_set_polarity(struct radeon_device *rdev,

			    enum radeon_hpd_id hpd)

{

	u32 tmp;

	bool connected = r600_hpd_sense(rdev, hpd);



	if (ASIC_IS_DCE3(rdev)) {

		switch (hpd) {

		case RADEON_HPD_1:

			tmp = RREG32(DC_HPD1_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HPDx_INT_POLARITY;

			else

				tmp |= DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD1_INT_CONTROL, tmp);

			break;

		case RADEON_HPD_2:

			tmp = RREG32(DC_HPD2_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HPDx_INT_POLARITY;

			else

				tmp |= DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD2_INT_CONTROL, tmp);

			break;

		case RADEON_HPD_3:

			tmp = RREG32(DC_HPD3_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HPDx_INT_POLARITY;

			else

				tmp |= DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD3_INT_CONTROL, tmp);

			break;

		case RADEON_HPD_4:

			tmp = RREG32(DC_HPD4_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HPDx_INT_POLARITY;

			else

				tmp |= DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD4_INT_CONTROL, tmp);

			break;

		case RADEON_HPD_5:

			tmp = RREG32(DC_HPD5_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HPDx_INT_POLARITY;

			else

				tmp |= DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD5_INT_CONTROL, tmp);

			break;

			/* DCE 3.2 */

		case RADEON_HPD_6:

			tmp = RREG32(DC_HPD6_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HPDx_INT_POLARITY;

			else

				tmp |= DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD6_INT_CONTROL, tmp);

			break;

		default:

			break;

		}

	} else {

		switch (hpd) {

		case RADEON_HPD_1:

			tmp = RREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HOT_PLUG_DETECTx_INT_POLARITY;

			else

				tmp |= DC_HOT_PLUG_DETECTx_INT_POLARITY;

			WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, tmp);

			break;

		case RADEON_HPD_2:

			tmp = RREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HOT_PLUG_DETECTx_INT_POLARITY;

			else

				tmp |= DC_HOT_PLUG_DETECTx_INT_POLARITY;

			WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);

			break;

		case RADEON_HPD_3:

			tmp = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL);

			if (connected)

				tmp &= ~DC_HOT_PLUG_DETECTx_INT_POLARITY;

			else

				tmp |= DC_HOT_PLUG_DETECTx_INT_POLARITY;

			WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, tmp);

			break;

		default:

			break;

		}

	}

}



void r600_hpd_init(struct radeon_device *rdev)

{

	struct drm_device *dev = rdev->ddev;

	struct drm_connector *connector;



	if (ASIC_IS_DCE3(rdev)) {

		u32 tmp = DC_HPDx_CONNECTION_TIMER(0x9c4) | DC_HPDx_RX_INT_TIMER(0xfa);

		if (ASIC_IS_DCE32(rdev))

			tmp |= DC_HPDx_EN;



		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:

				WREG32(DC_HPD1_CONTROL, tmp);

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

				break;

			case RADEON_HPD_2:

				WREG32(DC_HPD2_CONTROL, tmp);

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

				break;

			case RADEON_HPD_3:

				WREG32(DC_HPD3_CONTROL, tmp);

				rdev->irq.hpd[2] = true;

				break;

			case RADEON_HPD_4:

				WREG32(DC_HPD4_CONTROL, tmp);

				rdev->irq.hpd[3] = true;

				break;

				/* DCE 3.2 */

			case RADEON_HPD_5:

				WREG32(DC_HPD5_CONTROL, tmp);

				rdev->irq.hpd[4] = true;

				break;

			case RADEON_HPD_6:

				WREG32(DC_HPD6_CONTROL, tmp);

				rdev->irq.hpd[5] = true;

				break;

			default:

				break;

			}

		}

	} else {

		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:

				WREG32(DC_HOT_PLUG_DETECT1_CONTROL, DC_HOT_PLUG_DETECTx_EN);

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

				break;

			case RADEON_HPD_2:

				WREG32(DC_HOT_PLUG_DETECT2_CONTROL, DC_HOT_PLUG_DETECTx_EN);

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

				break;

			case RADEON_HPD_3:

				WREG32(DC_HOT_PLUG_DETECT3_CONTROL, DC_HOT_PLUG_DETECTx_EN);

				rdev->irq.hpd[2] = true;

				break;

			default:

				break;

			}

		}

	}

	r600_irq_set(rdev);

}



void r600_hpd_fini(struct radeon_device *rdev)

{

	struct drm_device *dev = rdev->ddev;

	struct drm_connector *connector;



	if (ASIC_IS_DCE3(rdev)) {

		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:

				WREG32(DC_HPD1_CONTROL, 0);

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

				break;

			case RADEON_HPD_2:

				WREG32(DC_HPD2_CONTROL, 0);

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

				break;

			case RADEON_HPD_3:

				WREG32(DC_HPD3_CONTROL, 0);

				rdev->irq.hpd[2] = false;

				break;

			case RADEON_HPD_4:

				WREG32(DC_HPD4_CONTROL, 0);

				rdev->irq.hpd[3] = false;

				break;

				/* DCE 3.2 */

			case RADEON_HPD_5:

				WREG32(DC_HPD5_CONTROL, 0);

				rdev->irq.hpd[4] = false;

				break;

			case RADEON_HPD_6:

				WREG32(DC_HPD6_CONTROL, 0);

				rdev->irq.hpd[5] = false;

				break;

			default:

				break;

			}

		}

	} else {

		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:

				WREG32(DC_HOT_PLUG_DETECT1_CONTROL, 0);

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

				break;

			case RADEON_HPD_2:

				WREG32(DC_HOT_PLUG_DETECT2_CONTROL, 0);

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

				break;

			case RADEON_HPD_3:

				WREG32(DC_HOT_PLUG_DETECT3_CONTROL, 0);

				rdev->irq.hpd[2] = false;

				break;

			default:

				break;

			}

		}

	}

}



/*

 * R600 PCIE GART

 */
@@ -2060,6 +2335,42 @@ static void r600_disable_interrupts(struct radeon_device *rdev) 
	rdev->ih.rptr = 0;

}



static void r600_disable_interrupt_state(struct radeon_device *rdev)

{

	u32 tmp;



	WREG32(CP_INT_CNTL, 0);

	WREG32(GRBM_INT_CNTL, 0);

	WREG32(DxMODE_INT_MASK, 0);

	if (ASIC_IS_DCE3(rdev)) {

		WREG32(DCE3_DACA_AUTODETECT_INT_CONTROL, 0);

		WREG32(DCE3_DACB_AUTODETECT_INT_CONTROL, 0);

		tmp = RREG32(DC_HPD1_INT_CONTROL) & DC_HPDx_INT_POLARITY;

		WREG32(DC_HPD1_INT_CONTROL, tmp);

		tmp = RREG32(DC_HPD2_INT_CONTROL) & DC_HPDx_INT_POLARITY;

		WREG32(DC_HPD2_INT_CONTROL, tmp);

		tmp = RREG32(DC_HPD3_INT_CONTROL) & DC_HPDx_INT_POLARITY;

		WREG32(DC_HPD3_INT_CONTROL, tmp);

		tmp = RREG32(DC_HPD4_INT_CONTROL) & DC_HPDx_INT_POLARITY;

		WREG32(DC_HPD4_INT_CONTROL, tmp);

		if (ASIC_IS_DCE32(rdev)) {

			tmp = RREG32(DC_HPD5_INT_CONTROL) & DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD5_INT_CONTROL, 0);

			tmp = RREG32(DC_HPD6_INT_CONTROL) & DC_HPDx_INT_POLARITY;

			WREG32(DC_HPD6_INT_CONTROL, 0);

		}

	} else {

		WREG32(DACA_AUTODETECT_INT_CONTROL, 0);

		WREG32(DACB_AUTODETECT_INT_CONTROL, 0);

		tmp = RREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;

		WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, 0);

		tmp = RREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;

		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, 0);

		tmp = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL) & DC_HOT_PLUG_DETECTx_INT_POLARITY;

		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, 0);

	}

}



int r600_irq_init(struct radeon_device *rdev)

{

	int ret = 0;
@@ -2122,9 +2433,7 @@ int r600_irq_init(struct radeon_device *rdev) 
	WREG32(IH_CNTL, ih_cntl);



	/* force the active interrupt state to all disabled */

	WREG32(CP_INT_CNTL, 0);

	WREG32(GRBM_INT_CNTL, 0);

	WREG32(DxMODE_INT_MASK, 0);

	r600_disable_interrupt_state(rdev);



	/* enable irqs */

	r600_enable_interrupts(rdev);
@@ -2141,13 +2450,29 @@ void r600_irq_fini(struct radeon_device *rdev) 


int r600_irq_set(struct radeon_device *rdev)

{

	uint32_t cp_int_cntl = CNTX_BUSY_INT_ENABLE | CNTX_EMPTY_INT_ENABLE;

	uint32_t mode_int = 0;

	u32 cp_int_cntl = CNTX_BUSY_INT_ENABLE | CNTX_EMPTY_INT_ENABLE;

	u32 mode_int = 0;

	u32 hpd1, hpd2, hpd3, hpd4 = 0, hpd5 = 0, hpd6 = 0;



	/* don't enable anything if the ih is disabled */

	if (!rdev->ih.enabled)

		return 0;



	if (ASIC_IS_DCE3(rdev)) {

		hpd1 = RREG32(DC_HPD1_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd2 = RREG32(DC_HPD2_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd3 = RREG32(DC_HPD3_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd4 = RREG32(DC_HPD4_INT_CONTROL) & ~DC_HPDx_INT_EN;

		if (ASIC_IS_DCE32(rdev)) {

			hpd5 = RREG32(DC_HPD5_INT_CONTROL) & ~DC_HPDx_INT_EN;

			hpd6 = RREG32(DC_HPD6_INT_CONTROL) & ~DC_HPDx_INT_EN;

		}

	} else {

		hpd1 = RREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd2 = RREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL) & ~DC_HPDx_INT_EN;

		hpd3 = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL) & ~DC_HPDx_INT_EN;

	}



	if (rdev->irq.sw_int) {

		DRM_DEBUG("r600_irq_set: sw int\n");

		cp_int_cntl |= RB_INT_ENABLE;
@@ -2160,39 +2485,137 @@ int r600_irq_set(struct radeon_device *rdev) 
		DRM_DEBUG("r600_irq_set: vblank 1\n");

		mode_int |= D2MODE_VBLANK_INT_MASK;

	}

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

		DRM_DEBUG("r600_irq_set: hpd 1\n");

		hpd1 |= DC_HPDx_INT_EN;

	}

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

		DRM_DEBUG("r600_irq_set: hpd 2\n");

		hpd2 |= DC_HPDx_INT_EN;

	}

	if (rdev->irq.hpd[2]) {

		DRM_DEBUG("r600_irq_set: hpd 3\n");

		hpd3 |= DC_HPDx_INT_EN;

	}

	if (rdev->irq.hpd[3]) {

		DRM_DEBUG("r600_irq_set: hpd 4\n");

		hpd4 |= DC_HPDx_INT_EN;

	}

	if (rdev->irq.hpd[4]) {

		DRM_DEBUG("r600_irq_set: hpd 5\n");

		hpd5 |= DC_HPDx_INT_EN;

	}

	if (rdev->irq.hpd[5]) {

		DRM_DEBUG("r600_irq_set: hpd 6\n");

		hpd6 |= DC_HPDx_INT_EN;

	}



	WREG32(CP_INT_CNTL, cp_int_cntl);

	WREG32(DxMODE_INT_MASK, mode_int);

	if (ASIC_IS_DCE3(rdev)) {

		WREG32(DC_HPD1_INT_CONTROL, hpd1);

		WREG32(DC_HPD2_INT_CONTROL, hpd2);

		WREG32(DC_HPD3_INT_CONTROL, hpd3);

		WREG32(DC_HPD4_INT_CONTROL, hpd4);

		if (ASIC_IS_DCE32(rdev)) {

			WREG32(DC_HPD5_INT_CONTROL, hpd5);

			WREG32(DC_HPD6_INT_CONTROL, hpd6);

		}

	} else {

		WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, hpd1);

		WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, hpd2);

		WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, hpd3);

	}



	return 0;

}



static inline void r600_irq_ack(struct radeon_device *rdev, u32 disp_int)

static inline void r600_irq_ack(struct radeon_device *rdev,

				u32 *disp_int,

				u32 *disp_int_cont,

				u32 *disp_int_cont2)

{

	u32 tmp;



	if (disp_int & LB_D1_VBLANK_INTERRUPT)

	if (ASIC_IS_DCE3(rdev)) {

		*disp_int = RREG32(DCE3_DISP_INTERRUPT_STATUS);

		*disp_int_cont = RREG32(DCE3_DISP_INTERRUPT_STATUS_CONTINUE);

		*disp_int_cont2 = RREG32(DCE3_DISP_INTERRUPT_STATUS_CONTINUE2);

	} else {

		*disp_int = RREG32(DISP_INTERRUPT_STATUS);

		*disp_int_cont = RREG32(DISP_INTERRUPT_STATUS_CONTINUE);

		*disp_int_cont2 = 0;

	}



	if (*disp_int & LB_D1_VBLANK_INTERRUPT)

		WREG32(D1MODE_VBLANK_STATUS, DxMODE_VBLANK_ACK);

	if (disp_int & LB_D1_VLINE_INTERRUPT)

	if (*disp_int & LB_D1_VLINE_INTERRUPT)

		WREG32(D1MODE_VLINE_STATUS, DxMODE_VLINE_ACK);

	if (disp_int & LB_D2_VBLANK_INTERRUPT)

	if (*disp_int & LB_D2_VBLANK_INTERRUPT)

		WREG32(D2MODE_VBLANK_STATUS, DxMODE_VBLANK_ACK);

	if (disp_int & LB_D2_VLINE_INTERRUPT)

	if (*disp_int & LB_D2_VLINE_INTERRUPT)

		WREG32(D2MODE_VLINE_STATUS, DxMODE_VLINE_ACK);



	if (*disp_int & DC_HPD1_INTERRUPT) {

		if (ASIC_IS_DCE3(rdev)) {

			tmp = RREG32(DC_HPD1_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HPD1_INT_CONTROL, tmp);

		} else {

			tmp = RREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HOT_PLUG_DETECT1_INT_CONTROL, tmp);

		}

	}

	if (*disp_int & DC_HPD2_INTERRUPT) {

		if (ASIC_IS_DCE3(rdev)) {

			tmp = RREG32(DC_HPD2_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HPD2_INT_CONTROL, tmp);

		} else {

			tmp = RREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HOT_PLUG_DETECT2_INT_CONTROL, tmp);

		}

	}

	if (*disp_int_cont & DC_HPD3_INTERRUPT) {

		if (ASIC_IS_DCE3(rdev)) {

			tmp = RREG32(DC_HPD3_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HPD3_INT_CONTROL, tmp);

		} else {

			tmp = RREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HOT_PLUG_DETECT3_INT_CONTROL, tmp);

		}

	}

	if (*disp_int_cont & DC_HPD4_INTERRUPT) {

		tmp = RREG32(DC_HPD4_INT_CONTROL);

		tmp |= DC_HPDx_INT_ACK;

		WREG32(DC_HPD4_INT_CONTROL, tmp);

	}

	if (ASIC_IS_DCE32(rdev)) {

		if (*disp_int_cont2 & DC_HPD5_INTERRUPT) {

			tmp = RREG32(DC_HPD5_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HPD5_INT_CONTROL, tmp);

		}

		if (*disp_int_cont2 & DC_HPD6_INTERRUPT) {

			tmp = RREG32(DC_HPD5_INT_CONTROL);

			tmp |= DC_HPDx_INT_ACK;

			WREG32(DC_HPD6_INT_CONTROL, tmp);

		}

	}

}



void r600_irq_disable(struct radeon_device *rdev)

{

	u32 disp_int;

	u32 disp_int, disp_int_cont, disp_int_cont2;



	r600_disable_interrupts(rdev);

	/* Wait and acknowledge irq */

	mdelay(1);

	if (ASIC_IS_DCE3(rdev))

		disp_int = RREG32(DCE3_DISP_INTERRUPT_STATUS);

	else

		disp_int = RREG32(DISP_INTERRUPT_STATUS);

	r600_irq_ack(rdev, disp_int);

	r600_irq_ack(rdev, &disp_int, &disp_int_cont, &disp_int_cont2);

	r600_disable_interrupt_state(rdev);

}



static inline u32 r600_get_ih_wptr(struct radeon_device *rdev)
@@ -2249,7 +2672,7 @@ int r600_irq_process(struct radeon_device *rdev) 
	u32 rptr = rdev->ih.rptr;

	u32 src_id, src_data;

	u32 last_entry = rdev->ih.ring_size - 16;

	u32 ring_index, disp_int;

	u32 ring_index, disp_int, disp_int_cont, disp_int_cont2;

	unsigned long flags;



	DRM_DEBUG("r600_irq_process start: rptr %d, wptr %d\n", rptr, wptr);
@@ -2267,11 +2690,7 @@ int r600_irq_process(struct radeon_device *rdev) 


restart_ih:

	/* display interrupts */

	if (ASIC_IS_DCE3(rdev))

		disp_int = RREG32(DCE3_DISP_INTERRUPT_STATUS);

	else

		disp_int = RREG32(DISP_INTERRUPT_STATUS);

	r600_irq_ack(rdev, disp_int);

	r600_irq_ack(rdev, &disp_int, &disp_int_cont, &disp_int_cont2);



	rdev->ih.wptr = wptr;

	while (rptr != wptr) {
@@ -2321,6 +2740,49 @@ restart_ih: 
				break;

			}

			break;

		case 19: /* HPD/DAC hotplug */

			switch (src_data) {

			case 0:

				if (disp_int & DC_HPD1_INTERRUPT) {

					disp_int &= ~DC_HPD1_INTERRUPT;

					DRM_INFO("IH: HPD1\n");

				}

				break;

			case 1:

				if (disp_int & DC_HPD2_INTERRUPT) {

					disp_int &= ~DC_HPD2_INTERRUPT;

					DRM_INFO("IH: HPD2\n");

				}

				break;

			case 4:

				if (disp_int_cont & DC_HPD3_INTERRUPT) {

					disp_int_cont &= ~DC_HPD3_INTERRUPT;

					DRM_INFO("IH: HPD3\n");

				}

				break;

			case 5:

				if (disp_int_cont & DC_HPD4_INTERRUPT) {

					disp_int_cont &= ~DC_HPD4_INTERRUPT;

					DRM_INFO("IH: HPD4\n");

				}

				break;

			case 10:

				if (disp_int_cont2 & DC_HPD5_INTERRUPT) {

					disp_int_cont &= ~DC_HPD5_INTERRUPT;

					DRM_INFO("IH: HPD5\n");

				}

				break;

			case 12:

				if (disp_int_cont2 & DC_HPD6_INTERRUPT) {

					disp_int_cont &= ~DC_HPD6_INTERRUPT;

					DRM_INFO("IH: HPD6\n");

				}

				break;

			default:

				DRM_ERROR("Unhandled interrupt: %d %d\n", src_id, src_data);

				break;

			}

			break;

		case 176: /* CP_INT in ring buffer */

		case 177: /* CP_INT in IB1 */

		case 178: /* CP_INT in IB2 */