Subversion Repositories Kolibri OS

/*

 * Copyright 2008 Advanced Micro Devices, Inc.

 * Copyright 2008 Red Hat Inc.

 * Copyright 2009 Christian König.

 *

 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Christian König

 */

#include 

#include 

#include 

#include "radeon.h"

#include "radeon_asic.h"

#include "r600d.h"

#include "atom.h"

/*

 * HDMI color format

 */

enum r600_hdmi_color_format {

	RGB = 0,

	YCC_422 = 1,

	YCC_444 = 2

};

/*

 * IEC60958 status bits

 */

enum r600_hdmi_iec_status_bits {

	AUDIO_STATUS_DIG_ENABLE   = 0x01,

	AUDIO_STATUS_V	    = 0x02,

	AUDIO_STATUS_VCFG	 = 0x04,

	AUDIO_STATUS_EMPHASIS     = 0x08,

	AUDIO_STATUS_COPYRIGHT    = 0x10,

	AUDIO_STATUS_NONAUDIO     = 0x20,

	AUDIO_STATUS_PROFESSIONAL = 0x40,

	AUDIO_STATUS_LEVEL	= 0x80

};

static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = {

    /*	     32kHz	  44.1kHz	48kHz    */

    /* Clock      N     CTS      N     CTS      N     CTS */

    {  25175,  4096,  25175, 28224, 125875,  6144,  25175 }, /*  25,20/1.001 MHz */

    {  25200,  4096,  25200,  6272,  28000,  6144,  25200 }, /*  25.20       MHz */

    {  27000,  4096,  27000,  6272,  30000,  6144,  27000 }, /*  27.00       MHz */

    {  27027,  4096,  27027,  6272,  30030,  6144,  27027 }, /*  27.00*1.001 MHz */

    {  54000,  4096,  54000,  6272,  60000,  6144,  54000 }, /*  54.00       MHz */

    {  54054,  4096,  54054,  6272,  60060,  6144,  54054 }, /*  54.00*1.001 MHz */

    {  74176,  4096,  74176,  5733,  75335,  6144,  74176 }, /*  74.25/1.001 MHz */

    {  74250,  4096,  74250,  6272,  82500,  6144,  74250 }, /*  74.25       MHz */

    { 148352,  4096, 148352,  5733, 150670,  6144, 148352 }, /* 148.50/1.001 MHz */

    { 148500,  4096, 148500,  6272, 165000,  6144, 148500 }, /* 148.50       MHz */

};

/*

 * check if the chipset is supported

 */

static int r600_audio_chipset_supported(struct radeon_device *rdev)

{

	return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);

}

static struct r600_audio_pin r600_audio_status(struct radeon_device *rdev)

{

	struct r600_audio_pin status;

	uint32_t value;

	value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL);

	/* number of channels */

	status.channels = (value & 0x7) + 1;

	/* bits per sample */

	switch ((value & 0xF0) >> 4) {

	case 0x0:

		status.bits_per_sample = 8;

		break;

	case 0x1:

		status.bits_per_sample = 16;

		break;

	case 0x2:

		status.bits_per_sample = 20;

		break;

	case 0x3:

		status.bits_per_sample = 24;

		break;

	case 0x4:

		status.bits_per_sample = 32;

		break;

	default:

		dev_err(rdev->dev, "Unknown bits per sample 0x%x, using 16\n",

			(int)value);

		status.bits_per_sample = 16;

	}

	/* current sampling rate in HZ */

	if (value & 0x4000)

		status.rate = 44100;

	else

		status.rate = 48000;

	status.rate *= ((value >> 11) & 0x7) + 1;

	status.rate /= ((value >> 8) & 0x7) + 1;

	value = RREG32(R600_AUDIO_STATUS_BITS);

	/* iec 60958 status bits */

	status.status_bits = value & 0xff;

	/* iec 60958 category code */

	status.category_code = (value >> 8) & 0xff;

	return status;

}

/*

 * update all hdmi interfaces with current audio parameters

 */

void r600_audio_update_hdmi(struct work_struct *work)

{

	struct radeon_device *rdev = container_of(work, struct radeon_device,

						  audio_work);

	struct drm_device *dev = rdev->ddev;

	struct r600_audio_pin audio_status = r600_audio_status(rdev);

	struct drm_encoder *encoder;

	bool changed = false;

	if (rdev->audio.pin[0].channels != audio_status.channels ||

	    rdev->audio.pin[0].rate != audio_status.rate ||

	    rdev->audio.pin[0].bits_per_sample != audio_status.bits_per_sample ||

	    rdev->audio.pin[0].status_bits != audio_status.status_bits ||

	    rdev->audio.pin[0].category_code != audio_status.category_code) {

		rdev->audio.pin[0] = audio_status;

		changed = true;

	}

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {

		if (!radeon_encoder_is_digital(encoder))

			continue;

		if (changed || r600_hdmi_buffer_status_changed(encoder))

			r600_hdmi_update_audio_settings(encoder);

	}

}

/* enable the audio stream */

void r600_audio_enable(struct radeon_device *rdev,

		       struct r600_audio_pin *pin,

		       u8 enable_mask)

{

	u32 tmp = RREG32(AZ_HOT_PLUG_CONTROL);

	if (!pin)

		return;

	if (enable_mask) {

		tmp |= AUDIO_ENABLED;

		if (enable_mask & 1)

			tmp |= PIN0_AUDIO_ENABLED;

		if (enable_mask & 2)

			tmp |= PIN1_AUDIO_ENABLED;

		if (enable_mask & 4)

			tmp |= PIN2_AUDIO_ENABLED;

		if (enable_mask & 8)

			tmp |= PIN3_AUDIO_ENABLED;

	} else {

		tmp &= ~(AUDIO_ENABLED |

			 PIN0_AUDIO_ENABLED |

			 PIN1_AUDIO_ENABLED |

			 PIN2_AUDIO_ENABLED |

			 PIN3_AUDIO_ENABLED);

	}

	WREG32(AZ_HOT_PLUG_CONTROL, tmp);

}

/*

 * initialize the audio vars

 */

int r600_audio_init(struct radeon_device *rdev)

{

	if (!radeon_audio || !r600_audio_chipset_supported(rdev))

		return 0;

	rdev->audio.enabled = true;

	rdev->audio.num_pins = 1;

	rdev->audio.pin[0].channels = -1;

	rdev->audio.pin[0].rate = -1;

	rdev->audio.pin[0].bits_per_sample = -1;

	rdev->audio.pin[0].status_bits = 0;

	rdev->audio.pin[0].category_code = 0;

	rdev->audio.pin[0].id = 0;

	/* disable audio.  it will be set up later */

	r600_audio_enable(rdev, &rdev->audio.pin[0], 0);

	return 0;

}

/*

 * release the audio timer

 * TODO: How to do this correctly on SMP systems?

 */

void r600_audio_fini(struct radeon_device *rdev)

{

	if (!rdev->audio.enabled)

		return;

	r600_audio_enable(rdev, &rdev->audio.pin[0], 0);

	rdev->audio.enabled = false;

}

struct r600_audio_pin *r600_audio_get_pin(struct radeon_device *rdev)

{

	/* only one pin on 6xx-NI */

	return &rdev->audio.pin[0];

}

/*

 * calculate CTS and N values if they are not found in the table

 */

static void r600_hdmi_calc_cts(uint32_t clock, int *CTS, int *N, int freq)

{

	int n, cts;

	unsigned long div, mul;

	/* Safe, but overly large values */

	n = 128 * freq;

	cts = clock * 1000;

	/* Smallest valid fraction */

	div = gcd(n, cts);

	n /= div;

	cts /= div;

	/*

	 * The optimal N is 128*freq/1000. Calculate the closest larger

	 * value that doesn't truncate any bits.

	 */

	mul = ((128*freq/1000) + (n-1))/n;

	n *= mul;

	cts *= mul;

	/* Check that we are in spec (not always possible) */

	if (n < (128*freq/1500))

		printk(KERN_WARNING "Calculated ACR N value is too small. You may experience audio problems.\n");

	if (n > (128*freq/300))

		printk(KERN_WARNING "Calculated ACR N value is too large. You may experience audio problems.\n");

	*N = n;

	*CTS = cts;

	DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n",

		  *N, *CTS, freq);

}

struct radeon_hdmi_acr r600_hdmi_acr(uint32_t clock)

{

	struct radeon_hdmi_acr res;

	u8 i;

	/* Precalculated values for common clocks */

	for (i = 0; i < ARRAY_SIZE(r600_hdmi_predefined_acr); i++) {

		if (r600_hdmi_predefined_acr[i].clock == clock)

			return r600_hdmi_predefined_acr[i];

	}

	/* And odd clocks get manually calculated */

	r600_hdmi_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000);

	r600_hdmi_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100);

	r600_hdmi_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000);

	return res;

}

/*

 * update the N and CTS parameters for a given pixel clock rate

 */

void r600_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_hdmi_acr acr = r600_hdmi_acr(clock);

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	uint32_t offset = dig->afmt->offset;

	WREG32_P(HDMI0_ACR_32_0 + offset,

		 HDMI0_ACR_CTS_32(acr.cts_32khz),

		 ~HDMI0_ACR_CTS_32_MASK);

	WREG32_P(HDMI0_ACR_32_1 + offset,

		 HDMI0_ACR_N_32(acr.n_32khz),

		 ~HDMI0_ACR_N_32_MASK);

	WREG32_P(HDMI0_ACR_44_0 + offset,

		 HDMI0_ACR_CTS_44(acr.cts_44_1khz),

		 ~HDMI0_ACR_CTS_44_MASK);

	WREG32_P(HDMI0_ACR_44_1 + offset,

		 HDMI0_ACR_N_44(acr.n_44_1khz),

		 ~HDMI0_ACR_N_44_MASK);

	WREG32_P(HDMI0_ACR_48_0 + offset,

		 HDMI0_ACR_CTS_48(acr.cts_48khz),

		 ~HDMI0_ACR_CTS_48_MASK);

	WREG32_P(HDMI0_ACR_48_1 + offset,

		 HDMI0_ACR_N_48(acr.n_48khz),

		 ~HDMI0_ACR_N_48_MASK);

}

/*

 * build a HDMI Video Info Frame

 */

void r600_hdmi_update_avi_infoframe(struct drm_encoder *encoder, void *buffer,

				    size_t size)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	uint32_t offset = dig->afmt->offset;

	uint8_t *frame = buffer + 3;

	uint8_t *header = buffer;

	WREG32(HDMI0_AVI_INFO0 + offset,

		frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));

	WREG32(HDMI0_AVI_INFO1 + offset,

		frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));

	WREG32(HDMI0_AVI_INFO2 + offset,

		frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));

	WREG32(HDMI0_AVI_INFO3 + offset,

		frame[0xC] | (frame[0xD] << 8) | (header[1] << 24));

}

/*

 * build a Audio Info Frame

 */

static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder,

					     const void *buffer, size_t size)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	uint32_t offset = dig->afmt->offset;

	const u8 *frame = buffer + 3;

	WREG32(HDMI0_AUDIO_INFO0 + offset,

		frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));

	WREG32(HDMI0_AUDIO_INFO1 + offset,

		frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24));

}

/*

 * test if audio buffer is filled enough to start playing

 */

static bool r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	uint32_t offset = dig->afmt->offset;

	return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0;

}

/*

 * have buffer status changed since last call?

 */

int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	int status, result;

	if (!dig->afmt || !dig->afmt->enabled)

		return 0;

	status = r600_hdmi_is_audio_buffer_filled(encoder);

	result = dig->afmt->last_buffer_filled_status != status;

	dig->afmt->last_buffer_filled_status = status;

	return result;

}

/*

 * write the audio workaround status to the hardware

 */

void r600_hdmi_audio_workaround(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	uint32_t offset = dig->afmt->offset;

	bool hdmi_audio_workaround = false; /* FIXME */

	u32 value;

	if (!hdmi_audio_workaround ||

	    r600_hdmi_is_audio_buffer_filled(encoder))

		value = 0; /* disable workaround */

	else

		value = HDMI0_AUDIO_TEST_EN; /* enable workaround */

	WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset,

		 value, ~HDMI0_AUDIO_TEST_EN);

}

void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	u32 base_rate = 24000;

	u32 max_ratio = clock / base_rate;

	u32 dto_phase;

	u32 dto_modulo = clock;

	u32 wallclock_ratio;

	u32 dto_cntl;

	if (!dig || !dig->afmt)

		return;

	if (max_ratio >= 8) {

		dto_phase = 192 * 1000;

		wallclock_ratio = 3;

	} else if (max_ratio >= 4) {

		dto_phase = 96 * 1000;

		wallclock_ratio = 2;

	} else if (max_ratio >= 2) {

		dto_phase = 48 * 1000;

		wallclock_ratio = 1;

	} else {

		dto_phase = 24 * 1000;

		wallclock_ratio = 0;

	}

	/* there are two DTOs selected by DCCG_AUDIO_DTO_SELECT.

	 * doesn't matter which one you use.  Just use the first one.

	 */

	/* XXX two dtos; generally use dto0 for hdmi */

	/* Express [24MHz / target pixel clock] as an exact rational

	 * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE

	 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator

	 */

	if (ASIC_IS_DCE32(rdev)) {

		if (dig->dig_encoder == 0) {

			dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;

			dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);

			WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl);

			WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);

			WREG32(DCCG_AUDIO_DTO0_MODULE, dto_modulo);

			WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */

		} else {

			dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;

			dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);

			WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl);

			WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase);

			WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo);

			WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */

		}

	} else {

		/* according to the reg specs, this should DCE3.2 only, but in

		 * practice it seems to cover DCE2.0/3.0/3.1 as well.

		 */

		if (dig->dig_encoder == 0) {

		WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100);

		WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100);

		WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */

	} else {

			WREG32(DCCG_AUDIO_DTO1_PHASE, base_rate * 100);

			WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100);

			WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */

		}

	}

}

/*

 * update the info frames with the data from the current display mode

 */

void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];

	struct hdmi_avi_infoframe frame;

	uint32_t offset;

	uint32_t acr_ctl;

	ssize_t err;

	if (!dig || !dig->afmt)

		return;

	/* Silent, r600_hdmi_enable will raise WARN for us */

	if (!dig->afmt->enabled)

		return;

	offset = dig->afmt->offset;

	/* disable audio prior to setting up hw */

	dig->afmt->pin = r600_audio_get_pin(rdev);

	r600_audio_enable(rdev, dig->afmt->pin, 0xf);

	r600_audio_set_dto(encoder, mode->clock);

	WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset,

		       HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */

		       HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */

		       HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */

		 HDMI0_60958_CS_UPDATE, /* allow 60958 channel status fields to be updated */

		 ~(HDMI0_AUDIO_SAMPLE_SEND |

		   HDMI0_AUDIO_DELAY_EN_MASK |

		   HDMI0_AUDIO_PACKETS_PER_LINE_MASK |

		   HDMI0_60958_CS_UPDATE));

	/* DCE 3.0 uses register that's normally for CRC_CONTROL */

	acr_ctl = ASIC_IS_DCE3(rdev) ? DCE3_HDMI0_ACR_PACKET_CONTROL :

				       HDMI0_ACR_PACKET_CONTROL;

	WREG32_P(acr_ctl + offset,

	       HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */

		 HDMI0_ACR_AUTO_SEND, /* allow hw to sent ACR packets when required */

		 ~(HDMI0_ACR_SOURCE |

		   HDMI0_ACR_AUTO_SEND));

	WREG32_OR(HDMI0_VBI_PACKET_CONTROL + offset,

	       HDMI0_NULL_SEND | /* send null packets when required */

	       HDMI0_GC_SEND | /* send general control packets */

	       HDMI0_GC_CONT); /* send general control packets every frame */

	WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset,

	       HDMI0_AVI_INFO_SEND | /* enable AVI info frames */

	       HDMI0_AVI_INFO_CONT | /* send AVI info frames every frame/field */

	       HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */

		  HDMI0_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */

	WREG32_P(HDMI0_INFOFRAME_CONTROL1 + offset,

	       HDMI0_AVI_INFO_LINE(2) | /* anything other than 0 */

		 HDMI0_AUDIO_INFO_LINE(2), /* anything other than 0 */

		 ~(HDMI0_AVI_INFO_LINE_MASK |

		   HDMI0_AUDIO_INFO_LINE_MASK));

	WREG32_AND(HDMI0_GC + offset,

		   ~HDMI0_GC_AVMUTE); /* unset HDMI0_GC_AVMUTE */

	err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);

	if (err < 0) {

		DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);

		return;

	}

	err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));

	if (err < 0) {

		DRM_ERROR("failed to pack AVI infoframe: %zd\n", err);

		return;

	}

	r600_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer));

	/* fglrx duplicates INFOFRAME_CONTROL0 & INFOFRAME_CONTROL1 ops here */

	WREG32_AND(HDMI0_GENERIC_PACKET_CONTROL + offset,

		   ~(HDMI0_GENERIC0_SEND |

		     HDMI0_GENERIC0_CONT |

		     HDMI0_GENERIC0_UPDATE |

		     HDMI0_GENERIC1_SEND |

		     HDMI0_GENERIC1_CONT |

		     HDMI0_GENERIC0_LINE_MASK |

		     HDMI0_GENERIC1_LINE_MASK));

	r600_hdmi_update_ACR(encoder, mode->clock);

	WREG32_P(HDMI0_60958_0 + offset,

		 HDMI0_60958_CS_CHANNEL_NUMBER_L(1),

		 ~(HDMI0_60958_CS_CHANNEL_NUMBER_L_MASK |

		   HDMI0_60958_CS_CLOCK_ACCURACY_MASK));

	WREG32_P(HDMI0_60958_1 + offset,

		 HDMI0_60958_CS_CHANNEL_NUMBER_R(2),

		 ~HDMI0_60958_CS_CHANNEL_NUMBER_R_MASK);

	/* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */

	WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF);

	WREG32(HDMI0_RAMP_CONTROL1 + offset, 0x007FFFFF);

	WREG32(HDMI0_RAMP_CONTROL2 + offset, 0x00000001);

	WREG32(HDMI0_RAMP_CONTROL3 + offset, 0x00000001);

	/* enable audio after to setting up hw */

	r600_audio_enable(rdev, dig->afmt->pin, 0xf);

}

/**

 * r600_hdmi_update_audio_settings - Update audio infoframe

 *

 * @encoder: drm encoder

 *

 * Gets info about current audio stream and updates audio infoframe.

 */

void r600_hdmi_update_audio_settings(struct drm_encoder *encoder)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	struct r600_audio_pin audio = r600_audio_status(rdev);

	uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];

	struct hdmi_audio_infoframe frame;

	uint32_t offset;

	uint32_t value;

	ssize_t err;

	if (!dig->afmt || !dig->afmt->enabled)

		return;

	offset = dig->afmt->offset;

	DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n",

		 r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped",

		  audio.channels, audio.rate, audio.bits_per_sample);

	DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n",

		  (int)audio.status_bits, (int)audio.category_code);

	err = hdmi_audio_infoframe_init(&frame);

	if (err < 0) {

		DRM_ERROR("failed to setup audio infoframe\n");

		return;

	}

	frame.channels = audio.channels;

	err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));

	if (err < 0) {

		DRM_ERROR("failed to pack audio infoframe\n");

		return;

	}

	value = RREG32(HDMI0_AUDIO_PACKET_CONTROL + offset);

	if (value & HDMI0_AUDIO_TEST_EN)

		WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,

		       value & ~HDMI0_AUDIO_TEST_EN);

	WREG32_OR(HDMI0_CONTROL + offset,

		  HDMI0_ERROR_ACK);

	WREG32_AND(HDMI0_INFOFRAME_CONTROL0 + offset,

		   ~HDMI0_AUDIO_INFO_SOURCE);

	r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer));

	WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset,

		  HDMI0_AUDIO_INFO_CONT |

		  HDMI0_AUDIO_INFO_UPDATE);

}

/*

 * enable the HDMI engine

 */

void r600_hdmi_enable(struct drm_encoder *encoder, bool enable)

{

	struct drm_device *dev = encoder->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	u32 hdmi = HDMI0_ERROR_ACK;

	if (!dig || !dig->afmt)

		return;

	/* Silent, r600_hdmi_enable will raise WARN for us */

	if (enable && dig->afmt->enabled)

		return;

	if (!enable && !dig->afmt->enabled)

		return;

	if (!enable && dig->afmt->pin) {

		r600_audio_enable(rdev, dig->afmt->pin, 0);

		dig->afmt->pin = NULL;

	}

	/* Older chipsets require setting HDMI and routing manually */

	if (!ASIC_IS_DCE3(rdev)) {

		if (enable)

			hdmi |= HDMI0_ENABLE;

	switch (radeon_encoder->encoder_id) {

	case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:

			if (enable) {

				WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN);

			hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA);

			} else {

				WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN);

			}

		break;

	case ENCODER_OBJECT_ID_INTERNAL_LVTM1:

			if (enable) {

				WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN);

			hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA);

			} else {

				WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN);

			}

			break;

		case ENCODER_OBJECT_ID_INTERNAL_DDI:

			if (enable) {

				WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN);

			hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA);

			} else {

				WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN);

			}

			break;

		case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:

			if (enable)

			hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA);

		break;

	default:

			dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n",

				radeon_encoder->encoder_id);

		break;

	}

		WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi);

	}

	if (rdev->irq.installed) {

		/* if irq is available use it */

		/* XXX: shouldn't need this on any asics.  Double check DCE2/3 */

//       if (enable)

//           radeon_irq_kms_enable_afmt(rdev, dig->afmt->id);

//       else

//           radeon_irq_kms_disable_afmt(rdev, dig->afmt->id);

	}

	dig->afmt->enabled = enable;

	DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",

		  enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);

}