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drm/radeon: Use generic HDMI infoframe helpers

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Use the generic HDMI infoframe helpers to get rid of the duplicate
implementation in the radeon driver.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Thierry Reding 2013-01-14 13:36:30 +01:00
parent ac24c2204a
commit e3b2e0347e
2 changed files with 58 additions and 161 deletions
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85
drivers/gpu/drm/radeon/evergreen_hdmi.c
View file

@ -24,6 +24,7 @@
* Authors: Christian König
* Rafał Miłecki
*/
#include <linux/hdmi.h>
#include <drm/drmP.h>
#include <drm/radeon_drm.h>
#include "radeon.h"
@ -53,80 +54,19 @@ static void evergreen_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t cloc
WREG32(HDMI_ACR_48_1 + offset, acr.n_48khz);
}
/*
* calculate the crc for a given info frame
*/
static void evergreen_hdmi_infoframe_checksum(uint8_t packetType,
uint8_t versionNumber,
uint8_t length,
uint8_t *frame)
{
int i;
frame[0] = packetType + versionNumber + length;
for (i = 1; i <= length; i++)
frame[0] += frame[i];
frame[0] = 0x100 - frame[0];
}
/*
* build a HDMI Video Info Frame
*/
static void evergreen_hdmi_videoinfoframe(
struct drm_encoder *encoder,
uint8_t color_format,
int active_information_present,
uint8_t active_format_aspect_ratio,
uint8_t scan_information,
uint8_t colorimetry,
uint8_t ex_colorimetry,
uint8_t quantization,
int ITC,
uint8_t picture_aspect_ratio,
uint8_t video_format_identification,
uint8_t pixel_repetition,
uint8_t non_uniform_picture_scaling,
uint8_t bar_info_data_valid,
uint16_t top_bar,
uint16_t bottom_bar,
uint16_t left_bar,
uint16_t right_bar
)
static void evergreen_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 frame[14];
frame[0x0] = 0;
frame[0x1] =
(scan_information & 0x3) |
((bar_info_data_valid & 0x3) << 2) |
((active_information_present & 0x1) << 4) |
((color_format & 0x3) << 5);
frame[0x2] =
(active_format_aspect_ratio & 0xF) |
((picture_aspect_ratio & 0x3) << 4) |
((colorimetry & 0x3) << 6);
frame[0x3] =
(non_uniform_picture_scaling & 0x3) |
((quantization & 0x3) << 2) |
((ex_colorimetry & 0x7) << 4) |
((ITC & 0x1) << 7);
frame[0x4] = (video_format_identification & 0x7F);
frame[0x5] = (pixel_repetition & 0xF);
frame[0x6] = (top_bar & 0xFF);
frame[0x7] = (top_bar >> 8);
frame[0x8] = (bottom_bar & 0xFF);
frame[0x9] = (bottom_bar >> 8);
frame[0xA] = (left_bar & 0xFF);
frame[0xB] = (left_bar >> 8);
frame[0xC] = (right_bar & 0xFF);
frame[0xD] = (right_bar >> 8);
evergreen_hdmi_infoframe_checksum(0x82, 0x02, 0x0D, frame);
/* Our header values (type, version, length) should be alright, Intel
* is using the same. Checksum function also seems to be OK, it works
* fine for audio infoframe. However calculated value is always lower
@ -154,7 +94,10 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
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;
ssize_t err;
/* Silent, r600_hdmi_enable will raise WARN for us */
if (!dig->afmt->enabled)
@ -200,9 +143,19 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
WREG32(HDMI_GC + offset, 0); /* unset HDMI_GC_AVMUTE */
evergreen_hdmi_videoinfoframe(encoder, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0);
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;
}
evergreen_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer));
evergreen_hdmi_update_ACR(encoder, mode->clock);
/* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */