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/*

 * Copyright 2014 Advanced Micro Devices, Inc.

 *

 * 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: Slava Grigorev 

 */

#include 

#include 

#include 

#include "radeon.h"

#include "atom.h"

#include "radeon_audio.h"

void r600_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,

		u8 enable_mask);

void dce4_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,

		u8 enable_mask);

void dce6_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,

		u8 enable_mask);

u32 dce6_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg);

void dce6_endpoint_wreg(struct radeon_device *rdev,

		u32 offset, u32 reg, u32 v);

void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,

		struct cea_sad *sads, int sad_count);

void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,

		struct cea_sad *sads, int sad_count);

void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,

		struct cea_sad *sads, int sad_count);

void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,

		u8 *sadb, int sad_count);

void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,

		u8 *sadb, int sad_count);

void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,

		u8 *sadb, int sad_count);

void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,

		u8 *sadb, int sad_count);

void dce6_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,

		u8 *sadb, int sad_count);

void dce6_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,

		u8 *sadb, int sad_count);

void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,

		struct drm_connector *connector, struct drm_display_mode *mode);

void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,

		struct drm_connector *connector, struct drm_display_mode *mode);

struct r600_audio_pin* r600_audio_get_pin(struct radeon_device *rdev);

struct r600_audio_pin* dce6_audio_get_pin(struct radeon_device *rdev);

void dce6_afmt_select_pin(struct drm_encoder *encoder);

void r600_hdmi_audio_set_dto(struct radeon_device *rdev,

	struct radeon_crtc *crtc, unsigned int clock);

void dce3_2_audio_set_dto(struct radeon_device *rdev,

	struct radeon_crtc *crtc, unsigned int clock);

void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,

	struct radeon_crtc *crtc, unsigned int clock);

void dce4_dp_audio_set_dto(struct radeon_device *rdev,

	struct radeon_crtc *crtc, unsigned int clock);

void dce6_hdmi_audio_set_dto(struct radeon_device *rdev,

	struct radeon_crtc *crtc, unsigned int clock);

void dce6_dp_audio_set_dto(struct radeon_device *rdev,

	struct radeon_crtc *crtc, unsigned int clock);

void r600_set_avi_packet(struct radeon_device *rdev, u32 offset,

	unsigned char *buffer, size_t size);

void evergreen_set_avi_packet(struct radeon_device *rdev, u32 offset,

	unsigned char *buffer, size_t size);

void r600_hdmi_update_acr(struct drm_encoder *encoder, long offset,

	const struct radeon_hdmi_acr *acr);

void dce3_2_hdmi_update_acr(struct drm_encoder *encoder, long offset,

	const struct radeon_hdmi_acr *acr);

void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,

	const struct radeon_hdmi_acr *acr);

void r600_set_vbi_packet(struct drm_encoder *encoder, u32 offset);

void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset);

void dce4_hdmi_set_color_depth(struct drm_encoder *encoder,

	u32 offset, int bpc);

void r600_set_audio_packet(struct drm_encoder *encoder, u32 offset);

void dce3_2_set_audio_packet(struct drm_encoder *encoder, u32 offset);

void dce4_set_audio_packet(struct drm_encoder *encoder, u32 offset);

void r600_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);

void dce3_2_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);

void dce4_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);

static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,

	struct drm_display_mode *mode);

static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,

	struct drm_display_mode *mode);

void r600_hdmi_enable(struct drm_encoder *encoder, bool enable);

void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable);

void evergreen_dp_enable(struct drm_encoder *encoder, bool enable);

static const u32 pin_offsets[7] =

{

	(0x5e00 - 0x5e00),

	(0x5e18 - 0x5e00),

	(0x5e30 - 0x5e00),

	(0x5e48 - 0x5e00),

	(0x5e60 - 0x5e00),

	(0x5e78 - 0x5e00),

	(0x5e90 - 0x5e00),

};

static u32 radeon_audio_rreg(struct radeon_device *rdev, u32 offset, u32 reg)

{

	return RREG32(reg);

}

static void radeon_audio_wreg(struct radeon_device *rdev, u32 offset,

		u32 reg, u32 v)

{

	WREG32(reg, v);

}

static struct radeon_audio_basic_funcs r600_funcs = {

	.endpoint_rreg = radeon_audio_rreg,

	.endpoint_wreg = radeon_audio_wreg,

	.enable = r600_audio_enable,

};

static struct radeon_audio_basic_funcs dce32_funcs = {

	.endpoint_rreg = radeon_audio_rreg,

	.endpoint_wreg = radeon_audio_wreg,

	.enable = r600_audio_enable,

};

static struct radeon_audio_basic_funcs dce4_funcs = {

	.endpoint_rreg = radeon_audio_rreg,

	.endpoint_wreg = radeon_audio_wreg,

	.enable = dce4_audio_enable,

};

static struct radeon_audio_basic_funcs dce6_funcs = {

	.endpoint_rreg = dce6_endpoint_rreg,

	.endpoint_wreg = dce6_endpoint_wreg,

	.enable = dce6_audio_enable,

};

static struct radeon_audio_funcs r600_hdmi_funcs = {

	.get_pin = r600_audio_get_pin,

	.set_dto = r600_hdmi_audio_set_dto,

	.update_acr = r600_hdmi_update_acr,

	.set_vbi_packet = r600_set_vbi_packet,

	.set_avi_packet = r600_set_avi_packet,

	.set_audio_packet = r600_set_audio_packet,

	.set_mute = r600_set_mute,

	.mode_set = radeon_audio_hdmi_mode_set,

	.dpms = r600_hdmi_enable,

};

static struct radeon_audio_funcs dce32_hdmi_funcs = {

	.get_pin = r600_audio_get_pin,

	.write_sad_regs = dce3_2_afmt_write_sad_regs,

	.write_speaker_allocation = dce3_2_afmt_hdmi_write_speaker_allocation,

	.set_dto = dce3_2_audio_set_dto,

	.update_acr = dce3_2_hdmi_update_acr,

	.set_vbi_packet = r600_set_vbi_packet,

	.set_avi_packet = r600_set_avi_packet,

	.set_audio_packet = dce3_2_set_audio_packet,

	.set_mute = dce3_2_set_mute,

	.mode_set = radeon_audio_hdmi_mode_set,

	.dpms = r600_hdmi_enable,

};

static struct radeon_audio_funcs dce32_dp_funcs = {

	.get_pin = r600_audio_get_pin,

	.write_sad_regs = dce3_2_afmt_write_sad_regs,

	.write_speaker_allocation = dce3_2_afmt_dp_write_speaker_allocation,

	.set_dto = dce3_2_audio_set_dto,

	.set_avi_packet = r600_set_avi_packet,

	.set_audio_packet = dce3_2_set_audio_packet,

};

static struct radeon_audio_funcs dce4_hdmi_funcs = {

	.get_pin = r600_audio_get_pin,

	.write_sad_regs = evergreen_hdmi_write_sad_regs,

	.write_speaker_allocation = dce4_afmt_hdmi_write_speaker_allocation,

	.write_latency_fields = dce4_afmt_write_latency_fields,

	.set_dto = dce4_hdmi_audio_set_dto,

	.update_acr = evergreen_hdmi_update_acr,

	.set_vbi_packet = dce4_set_vbi_packet,

	.set_color_depth = dce4_hdmi_set_color_depth,

	.set_avi_packet = evergreen_set_avi_packet,

	.set_audio_packet = dce4_set_audio_packet,

	.set_mute = dce4_set_mute,

	.mode_set = radeon_audio_hdmi_mode_set,

	.dpms = evergreen_hdmi_enable,

};

static struct radeon_audio_funcs dce4_dp_funcs = {

	.get_pin = r600_audio_get_pin,

	.write_sad_regs = evergreen_hdmi_write_sad_regs,

	.write_speaker_allocation = dce4_afmt_dp_write_speaker_allocation,

	.write_latency_fields = dce4_afmt_write_latency_fields,

	.set_dto = dce4_dp_audio_set_dto,

	.set_avi_packet = evergreen_set_avi_packet,

	.set_audio_packet = dce4_set_audio_packet,

	.mode_set = radeon_audio_dp_mode_set,

	.dpms = evergreen_dp_enable,

};

static struct radeon_audio_funcs dce6_hdmi_funcs = {

	.select_pin = dce6_afmt_select_pin,

	.get_pin = dce6_audio_get_pin,

	.write_sad_regs = dce6_afmt_write_sad_regs,

	.write_speaker_allocation = dce6_afmt_hdmi_write_speaker_allocation,

	.write_latency_fields = dce6_afmt_write_latency_fields,

	.set_dto = dce6_hdmi_audio_set_dto,

	.update_acr = evergreen_hdmi_update_acr,

	.set_vbi_packet = dce4_set_vbi_packet,

	.set_color_depth = dce4_hdmi_set_color_depth,

	.set_avi_packet = evergreen_set_avi_packet,

	.set_audio_packet = dce4_set_audio_packet,

	.set_mute = dce4_set_mute,

	.mode_set = radeon_audio_hdmi_mode_set,

	.dpms = evergreen_hdmi_enable,

};

static struct radeon_audio_funcs dce6_dp_funcs = {

	.select_pin = dce6_afmt_select_pin,

	.get_pin = dce6_audio_get_pin,

	.write_sad_regs = dce6_afmt_write_sad_regs,

	.write_speaker_allocation = dce6_afmt_dp_write_speaker_allocation,

	.write_latency_fields = dce6_afmt_write_latency_fields,

	.set_dto = dce6_dp_audio_set_dto,

	.set_avi_packet = evergreen_set_avi_packet,

	.set_audio_packet = dce4_set_audio_packet,

	.mode_set = radeon_audio_dp_mode_set,

	.dpms = evergreen_dp_enable,

};

static void radeon_audio_enable(struct radeon_device *rdev,

				struct r600_audio_pin *pin, u8 enable_mask)

{

	struct drm_encoder *encoder;

	struct radeon_encoder *radeon_encoder;

	struct radeon_encoder_atom_dig *dig;

	int pin_count = 0;

	if (!pin)

		return;

	if (rdev->mode_info.mode_config_initialized) {

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

			if (radeon_encoder_is_digital(encoder)) {

				radeon_encoder = to_radeon_encoder(encoder);

				dig = radeon_encoder->enc_priv;

				if (dig->pin == pin)

					pin_count++;

			}

		}

		if ((pin_count > 1) && (enable_mask == 0))

			return;

	}

	if (rdev->audio.funcs->enable)

		rdev->audio.funcs->enable(rdev, pin, enable_mask);

}

static void radeon_audio_interface_init(struct radeon_device *rdev)

{

	if (ASIC_IS_DCE6(rdev)) {

		rdev->audio.funcs = &dce6_funcs;

		rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;

		rdev->audio.dp_funcs = &dce6_dp_funcs;

	} else if (ASIC_IS_DCE4(rdev)) {

		rdev->audio.funcs = &dce4_funcs;

		rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;

		rdev->audio.dp_funcs = &dce4_dp_funcs;

	} else if (ASIC_IS_DCE32(rdev)) {

		rdev->audio.funcs = &dce32_funcs;

		rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;

		rdev->audio.dp_funcs = &dce32_dp_funcs;

	} else {

		rdev->audio.funcs = &r600_funcs;

		rdev->audio.hdmi_funcs = &r600_hdmi_funcs;

		rdev->audio.dp_funcs = 0;

	}

}

static int radeon_audio_chipset_supported(struct radeon_device *rdev)

{

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

}

int radeon_audio_init(struct radeon_device *rdev)

{

	int i;

	if (!radeon_audio || !radeon_audio_chipset_supported(rdev))

		return 0;

	rdev->audio.enabled = true;

	if (ASIC_IS_DCE83(rdev))		/* KB: 2 streams, 3 endpoints */

		rdev->audio.num_pins = 3;

	else if (ASIC_IS_DCE81(rdev))	/* KV: 4 streams, 7 endpoints */

		rdev->audio.num_pins = 7;

	else if (ASIC_IS_DCE8(rdev))	/* BN/HW: 6 streams, 7 endpoints */

		rdev->audio.num_pins = 7;

	else if (ASIC_IS_DCE64(rdev))	/* OL: 2 streams, 2 endpoints */

		rdev->audio.num_pins = 2;

	else if (ASIC_IS_DCE61(rdev))	/* TN: 4 streams, 6 endpoints */

		rdev->audio.num_pins = 6;

	else if (ASIC_IS_DCE6(rdev))	/* SI: 6 streams, 6 endpoints */

		rdev->audio.num_pins = 6;

	else

		rdev->audio.num_pins = 1;

	for (i = 0; i < rdev->audio.num_pins; i++) {

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

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

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

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

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

		rdev->audio.pin[i].connected = false;

		rdev->audio.pin[i].offset = pin_offsets[i];

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

	}

	radeon_audio_interface_init(rdev);

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

	for (i = 0; i < rdev->audio.num_pins; i++)

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

	return 0;

}

u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)

{

	if (rdev->audio.funcs->endpoint_rreg)

		return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);

	return 0;

}

void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,

	u32 reg, u32 v)

{

	if (rdev->audio.funcs->endpoint_wreg)

		rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);

}

static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)

{

	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct cea_sad *sads;

	int sad_count;

	if (!connector)

		return;

	sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);

	if (sad_count <= 0) {

		DRM_ERROR("Couldn't read SADs: %d\n", sad_count);

		return;

	}

	BUG_ON(!sads);

	if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)

		radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);

	kfree(sads);

}

static void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)

{

	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	u8 *sadb = NULL;

	int sad_count;

	if (!connector)

		return;

	sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector),

						   &sadb);

	if (sad_count < 0) {

		DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",

			  sad_count);

		sad_count = 0;

	}

	if (radeon_encoder->audio && radeon_encoder->audio->write_speaker_allocation)

		radeon_encoder->audio->write_speaker_allocation(encoder, sadb, sad_count);

	kfree(sadb);

}

static void radeon_audio_write_latency_fields(struct drm_encoder *encoder,

					      struct drm_display_mode *mode)

{

	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	if (!connector)

		return;

	if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)

		radeon_encoder->audio->write_latency_fields(encoder, connector, mode);

}

struct r600_audio_pin* radeon_audio_get_pin(struct drm_encoder *encoder)

{

	struct radeon_device *rdev = encoder->dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	if (radeon_encoder->audio && radeon_encoder->audio->get_pin)

		return radeon_encoder->audio->get_pin(rdev);

	return NULL;

}

static void radeon_audio_select_pin(struct drm_encoder *encoder)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	if (radeon_encoder->audio && radeon_encoder->audio->select_pin)

		radeon_encoder->audio->select_pin(encoder);

}

void radeon_audio_detect(struct drm_connector *connector,

			 struct drm_encoder *encoder,

			 enum drm_connector_status status)

{

	struct drm_device *dev = connector->dev;

	struct radeon_device *rdev = dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig;

	if (!radeon_audio_chipset_supported(rdev))

		return;

	if (!radeon_encoder_is_digital(encoder))

		return;

	dig = radeon_encoder->enc_priv;

	if (status == connector_status_connected) {

		if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {

			struct radeon_connector *radeon_connector = to_radeon_connector(connector);

			if (radeon_dp_getsinktype(radeon_connector) ==

			    CONNECTOR_OBJECT_ID_DISPLAYPORT)

				radeon_encoder->audio = rdev->audio.dp_funcs;

			else

				radeon_encoder->audio = rdev->audio.hdmi_funcs;

		} else {

			radeon_encoder->audio = rdev->audio.hdmi_funcs;

		}

		if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {

			if (!dig->pin)

				dig->pin = radeon_audio_get_pin(encoder);

			radeon_audio_enable(rdev, dig->pin, 0xf);

		} else {

			radeon_audio_enable(rdev, dig->pin, 0);

			dig->pin = NULL;

		}

	} else {

		radeon_audio_enable(rdev, dig->pin, 0);

		dig->pin = NULL;

	}

}

void radeon_audio_fini(struct radeon_device *rdev)

{

	int i;

	if (!rdev->audio.enabled)

		return;

	for (i = 0; i < rdev->audio.num_pins; i++)

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

	rdev->audio.enabled = false;

}

static void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock)

{

	struct radeon_device *rdev = encoder->dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_crtc *crtc = to_radeon_crtc(encoder->crtc);

	if (radeon_encoder->audio && radeon_encoder->audio->set_dto)

		radeon_encoder->audio->set_dto(rdev, crtc, clock);

}

static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,

				       struct drm_display_mode *mode)

{

	struct radeon_device *rdev = encoder->dev->dev_private;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

	u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];

	struct hdmi_avi_infoframe frame;

	int err;

	if (!connector)

		return -EINVAL;

	err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);

	if (err < 0) {

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

		return err;

	}

	if (radeon_encoder->output_csc != RADEON_OUTPUT_CSC_BYPASS) {

		if (drm_rgb_quant_range_selectable(radeon_connector_edid(connector))) {

			if (radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB)

				frame.quantization_range = HDMI_QUANTIZATION_RANGE_LIMITED;

			else

				frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;

		} else {

			frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;

		}

	}

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

	if (err < 0) {

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

		return err;

	}

	if (dig && dig->afmt && radeon_encoder->audio &&

	    radeon_encoder->audio->set_avi_packet)

		radeon_encoder->audio->set_avi_packet(rdev, dig->afmt->offset,

			buffer, sizeof(buffer));

	return 0;

}

/*

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

 */

static void radeon_audio_calc_cts(unsigned int 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);

}

static const struct radeon_hdmi_acr* radeon_audio_acr(unsigned int clock)

{

	static struct radeon_hdmi_acr res;

	u8 i;

	static const struct radeon_hdmi_acr 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 */

	};

	/* Precalculated values for common clocks */

	for (i = 0; i < ARRAY_SIZE(hdmi_predefined_acr); i++)

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

			return &hdmi_predefined_acr[i];

	/* And odd clocks get manually calculated */

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

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

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

	return &res;

}

/*

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

 */

static void radeon_audio_update_acr(struct drm_encoder *encoder, unsigned int clock)

{

	const struct radeon_hdmi_acr *acr = radeon_audio_acr(clock);

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

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

		return;

	if (radeon_encoder->audio && radeon_encoder->audio->update_acr)

		radeon_encoder->audio->update_acr(encoder, dig->afmt->offset, acr);

}

static void radeon_audio_set_vbi_packet(struct drm_encoder *encoder)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

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

		return;

	if (radeon_encoder->audio && radeon_encoder->audio->set_vbi_packet)

		radeon_encoder->audio->set_vbi_packet(encoder, dig->afmt->offset);

}

static void radeon_hdmi_set_color_depth(struct drm_encoder *encoder)

{

	int bpc = 8;

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

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

		return;

	if (encoder->crtc) {

		struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);

		bpc = radeon_crtc->bpc;

	}

	if (radeon_encoder->audio && radeon_encoder->audio->set_color_depth)

		radeon_encoder->audio->set_color_depth(encoder, dig->afmt->offset, bpc);

}

static void radeon_audio_set_audio_packet(struct drm_encoder *encoder)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

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

		return;

	if (radeon_encoder->audio && radeon_encoder->audio->set_audio_packet)

		radeon_encoder->audio->set_audio_packet(encoder, dig->afmt->offset);

}

static void radeon_audio_set_mute(struct drm_encoder *encoder, bool mute)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

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

		return;

	if (radeon_encoder->audio && radeon_encoder->audio->set_mute)

		radeon_encoder->audio->set_mute(encoder, dig->afmt->offset, mute);

}

/*

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

 */

static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,

				       struct drm_display_mode *mode)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;

	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

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

		return;

	if (!connector)

		return;

	if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {

		radeon_audio_set_mute(encoder, true);

		radeon_audio_write_speaker_allocation(encoder);

		radeon_audio_write_sad_regs(encoder);

		radeon_audio_write_latency_fields(encoder, mode);

		radeon_audio_set_dto(encoder, mode->clock);

		radeon_audio_set_vbi_packet(encoder);

		radeon_hdmi_set_color_depth(encoder);

		radeon_audio_update_acr(encoder, mode->clock);

		radeon_audio_set_audio_packet(encoder);

		radeon_audio_select_pin(encoder);

		if (radeon_audio_set_avi_packet(encoder, mode) < 0)

			return;

		radeon_audio_set_mute(encoder, false);

	} else {

		radeon_hdmi_set_color_depth(encoder);

		if (radeon_audio_set_avi_packet(encoder, mode) < 0)

			return;

	}

}

static void radeon_audio_dp_mode_set(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;

	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

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

		return;

	if (!connector)

		return;

	if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {

		radeon_audio_write_speaker_allocation(encoder);

		radeon_audio_write_sad_regs(encoder);

		radeon_audio_write_latency_fields(encoder, mode);

		radeon_audio_set_dto(encoder, rdev->clock.vco_freq * 10);

		radeon_audio_set_audio_packet(encoder);

		radeon_audio_select_pin(encoder);

		if (radeon_audio_set_avi_packet(encoder, mode) < 0)

			return;

	}

}

void radeon_audio_mode_set(struct drm_encoder *encoder,

			   struct drm_display_mode *mode)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	if (radeon_encoder->audio && radeon_encoder->audio->mode_set)

		radeon_encoder->audio->mode_set(encoder, mode);

}

void radeon_audio_dpms(struct drm_encoder *encoder, int mode)

{

	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);

	if (radeon_encoder->audio && radeon_encoder->audio->dpms)

		radeon_encoder->audio->dpms(encoder, mode == DRM_MODE_DPMS_ON);

}

unsigned int radeon_audio_decode_dfs_div(unsigned int div)

{

	if (div >= 8 && div < 64)

		return (div - 8) * 25 + 200;

	else if (div >= 64 && div < 96)

		return (div - 64) * 50 + 1600;

	else if (div >= 96 && div < 128)

		return (div - 96) * 100 + 3200;

	else

		return 0;

}