[PATCH 12/24] radeon/audio: consolidate update_acr() functions
Christian König
deathsimple at vodafone.de
Wed Jan 14 06:55:19 PST 2015
Am 13.01.2015 um 18:46 schrieb Alex Deucher:
> From: Slava Grigorev <slava.grigorev at amd.com>
>
> Signed-off-by: Slava Grigorev <slava.grigorev at amd.com>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> drivers/gpu/drm/radeon/dce3_1_afmt.c | 38 +++++++++--
> drivers/gpu/drm/radeon/evergreen_hdmi.c | 46 ++++++-------
> drivers/gpu/drm/radeon/r600_hdmi.c | 117 +++++---------------------------
> drivers/gpu/drm/radeon/radeon_audio.c | 99 +++++++++++++++++++++++++++
> drivers/gpu/drm/radeon/radeon_audio.h | 3 +
> 5 files changed, 176 insertions(+), 127 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/dce3_1_afmt.c b/drivers/gpu/drm/radeon/dce3_1_afmt.c
> index 0accc5e..678909f 100644
> --- a/drivers/gpu/drm/radeon/dce3_1_afmt.c
> +++ b/drivers/gpu/drm/radeon/dce3_1_afmt.c
> @@ -167,6 +167,38 @@ void dce3_2_audio_set_dto(struct radeon_device *rdev,
> }
> }
>
> +void dce3_2_hdmi_update_acr(struct drm_encoder *encoder, long offset,
> + const struct radeon_hdmi_acr *acr)
> +{
> + struct drm_device *dev = encoder->dev;
> + struct radeon_device *rdev = dev->dev_private;
> +
> + WREG32(HDMI0_ACR_PACKET_CONTROL + offset,
> + HDMI0_ACR_SOURCE | /* select SW CTS value */
> + HDMI0_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
> +
> + 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);
Looks like spaces were used for indentation instead of tabs.
Christian.
> +}
> +
> /*
> * update the info frames with the data from the current display mode
> */
> @@ -220,10 +252,6 @@ void dce3_1_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *m
> radeon_audio_write_sad_regs(encoder);
> }
>
> - WREG32(HDMI0_ACR_PACKET_CONTROL + 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 */
> -
> WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
> HDMI0_NULL_SEND | /* send null packets when required */
> HDMI0_GC_SEND | /* send general control packets */
> @@ -255,7 +283,7 @@ void dce3_1_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *m
> }
>
> radeon_update_avi_infoframe(encoder, buffer, sizeof(buffer));
> - r600_hdmi_update_ACR(encoder, mode->clock);
> + radeon_audio_update_acr(encoder, mode->clock);
>
> /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
> WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF);
> diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c
> index f2896e5..c2abab4 100644
> --- a/drivers/gpu/drm/radeon/evergreen_hdmi.c
> +++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c
> @@ -64,26 +64,34 @@ void dce4_audio_enable(struct radeon_device *rdev,
> WREG32(AZ_HOT_PLUG_CONTROL, tmp);
> }
>
> -/*
> - * update the N and CTS parameters for a given pixel clock rate
> - */
> -static void evergreen_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
> +void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
> + const struct radeon_hdmi_acr *acr)
> {
> 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;
> + int bpc = 8;
> +
> + if (encoder->crtc) {
> + struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
> + bpc = radeon_crtc->bpc;
> + }
> +
> + if (bpc > 8)
> + WREG32(HDMI_ACR_PACKET_CONTROL + offset,
> + HDMI_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
> + else
> + WREG32(HDMI_ACR_PACKET_CONTROL + offset,
> + HDMI_ACR_SOURCE | /* select SW CTS value */
> + HDMI_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
>
> - WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr.cts_32khz));
> - WREG32(HDMI_ACR_32_1 + offset, acr.n_32khz);
> + WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr->cts_32khz));
> + WREG32(HDMI_ACR_32_1 + offset, acr->n_32khz);
>
> - WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr.cts_44_1khz));
> - WREG32(HDMI_ACR_44_1 + offset, acr.n_44_1khz);
> + WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr->cts_44_1khz));
> + WREG32(HDMI_ACR_44_1 + offset, acr->n_44_1khz);
>
> - WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr.cts_48khz));
> - WREG32(HDMI_ACR_48_1 + offset, acr.n_48khz);
> + WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr->cts_48khz));
> + WREG32(HDMI_ACR_48_1 + offset, acr->n_48khz);
> }
>
> void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
> @@ -378,15 +386,7 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
>
> /* fglrx clears sth in AFMT_AUDIO_PACKET_CONTROL2 here */
>
> - if (bpc > 8)
> - WREG32(HDMI_ACR_PACKET_CONTROL + offset,
> - HDMI_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
> - else
> - WREG32(HDMI_ACR_PACKET_CONTROL + offset,
> - HDMI_ACR_SOURCE | /* select SW CTS value */
> - HDMI_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
> -
> - evergreen_hdmi_update_ACR(encoder, mode->clock);
> + radeon_audio_update_acr(encoder, mode->clock);
>
> WREG32(AFMT_60958_0 + offset,
> AFMT_60958_CS_CHANNEL_NUMBER_L(1));
> diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c
> index 53ee7ad..05eec9f 100644
> --- a/drivers/gpu/drm/radeon/r600_hdmi.c
> +++ b/drivers/gpu/drm/radeon/r600_hdmi.c
> @@ -56,21 +56,6 @@ enum r600_hdmi_iec_status_bits {
> 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 */
> -};
> -
> static struct r600_audio_pin r600_audio_status(struct radeon_device *rdev)
> {
> struct r600_audio_pin status;
> @@ -189,96 +174,40 @@ struct r600_audio_pin *r600_audio_get_pin(struct radeon_device *rdev)
> 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)
> +void r600_hdmi_update_acr(struct drm_encoder *encoder, long offset,
> + const struct radeon_hdmi_acr *acr)
> {
> 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;
> +
> + /* DCE 3.0 uses register that's normally for CRC_CONTROL */
> + uint32_t 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 */
> + HDMI0_ACR_AUTO_SEND, /* allow hw to sent ACR packets when required */
> + ~(HDMI0_ACR_SOURCE |
> + HDMI0_ACR_AUTO_SEND));
>
> WREG32_P(HDMI0_ACR_32_0 + offset,
> - HDMI0_ACR_CTS_32(acr.cts_32khz),
> + 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(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(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(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(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(acr->n_48khz),
> ~HDMI0_ACR_N_48_MASK);
> }
>
> @@ -412,7 +341,6 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod
> 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)
> @@ -439,15 +367,6 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod
> 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 */
> @@ -493,7 +412,7 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod
> HDMI0_GENERIC0_LINE_MASK |
> HDMI0_GENERIC1_LINE_MASK));
>
> - r600_hdmi_update_ACR(encoder, mode->clock);
> + radeon_audio_update_acr(encoder, mode->clock);
>
> WREG32_P(HDMI0_60958_0 + offset,
> HDMI0_60958_CS_CHANNEL_NUMBER_L(1),
> diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
> index cc58ee8c..375252c 100644
> --- a/drivers/gpu/drm/radeon/radeon_audio.c
> +++ b/drivers/gpu/drm/radeon/radeon_audio.c
> @@ -22,6 +22,7 @@
> * Authors: Slava Grigorev <slava.grigorev at amd.com>
> */
>
> +#include <linux/gcd.h>
> #include <drm/drmP.h>
> #include <drm/drm_crtc.h>
> #include "radeon.h"
> @@ -78,6 +79,12 @@ void r600_update_avi_infoframe(struct radeon_device *rdev, u32 offset,
> unsigned char *buffer, size_t size);
> void evergreen_update_avi_infoframe(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);
>
> static const u32 pin_offsets[7] =
> {
> @@ -132,6 +139,7 @@ static struct radeon_audio_basic_funcs dce6_funcs = {
> 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,
> };
>
> static struct radeon_audio_funcs dce32_hdmi_funcs = {
> @@ -139,6 +147,7 @@ static struct radeon_audio_funcs dce32_hdmi_funcs = {
> .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,
> };
>
> static struct radeon_audio_funcs dce32_dp_funcs = {
> @@ -154,6 +163,7 @@ static struct radeon_audio_funcs dce4_hdmi_funcs = {
> .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,
> };
>
> static struct radeon_audio_funcs dce4_dp_funcs = {
> @@ -456,3 +466,92 @@ void radeon_update_avi_infoframe(struct drm_encoder *encoder, void *buffer,
> rdev->audio.funcs->update_avi_infoframe(rdev, dig->afmt->offset,
> buffer, size);
> }
> +
> +/*
> + * 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
> + */
> +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);
> +}
> diff --git a/drivers/gpu/drm/radeon/radeon_audio.h b/drivers/gpu/drm/radeon/radeon_audio.h
> index dc85d53..a4d0553 100644
> --- a/drivers/gpu/drm/radeon/radeon_audio.h
> +++ b/drivers/gpu/drm/radeon/radeon_audio.h
> @@ -55,6 +55,8 @@ struct radeon_audio_funcs
> u8 *sadb, int sad_count);
> void (*set_dto)(struct radeon_device *rdev,
> struct radeon_crtc *crtc, unsigned int clock);
> + void (*update_acr)(struct drm_encoder *encoder, long offset,
> + const struct radeon_hdmi_acr *acr);
> };
>
> int radeon_audio_init(struct radeon_device *rdev);
> @@ -76,5 +78,6 @@ void radeon_audio_fini(struct radeon_device *rdev);
> void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock);
> void radeon_update_avi_infoframe(struct drm_encoder *encoder, void *buffer,
> size_t size);
> +void radeon_audio_update_acr(struct drm_encoder *encoder, unsigned int clock);
>
> #endif
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