[PATCH 04/13] drm: bridge/dw_hdmi: use drm_hdmi_avi_infoframe_from_display_mode()
Russell King
rmk+kernel at arm.linux.org.uk
Sat May 9 03:26:11 PDT 2015
Use drm_hdmi_avi_infoframe_from_display_mode() to compose the AVI
frame.
Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
---
drivers/gpu/drm/bridge/dw_hdmi.c | 126 +++++++++++++++++++++------------------
1 file changed, 67 insertions(+), 59 deletions(-)
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index 75099b80ca7e..0f3ccfa3ccfc 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -918,74 +918,79 @@ static void hdmi_tx_hdcp_config(struct dw_hdmi *hdmi)
HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1);
}
-static void hdmi_config_AVI(struct dw_hdmi *hdmi)
+static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
{
- u8 val, pix_fmt, under_scan;
- u8 act_ratio, coded_ratio, colorimetry, ext_colorimetry;
- bool aspect_16_9;
+ struct hdmi_avi_infoframe frame;
+ u8 val;
- aspect_16_9 = false; /* FIXME */
+ /* Initialise info frame from DRM mode */
+ drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
- /* AVI Data Byte 1 */
if (hdmi->hdmi_data.enc_out_format == YCBCR444)
- pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_YCBCR444;
+ frame.colorspace = HDMI_COLORSPACE_YUV444;
else if (hdmi->hdmi_data.enc_out_format == YCBCR422_8BITS)
- pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_YCBCR422;
+ frame.colorspace = HDMI_COLORSPACE_YUV422;
else
- pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_RGB;
-
- under_scan = HDMI_FC_AVICONF0_SCAN_INFO_NODATA;
-
- /*
- * Active format identification data is present in the AVI InfoFrame.
- * Under scan info, no bar data
- */
- val = pix_fmt | under_scan |
- HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT |
- HDMI_FC_AVICONF0_BAR_DATA_NO_DATA;
-
- hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0);
-
- /* AVI Data Byte 2 -Set the Aspect Ratio */
- if (aspect_16_9) {
- act_ratio = HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_16_9;
- coded_ratio = HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_16_9;
- } else {
- act_ratio = HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_4_3;
- coded_ratio = HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_4_3;
- }
+ frame.colorspace = HDMI_COLORSPACE_RGB;
/* Set up colorimetry */
if (hdmi->hdmi_data.enc_out_format == XVYCC444) {
- colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_EXTENDED_INFO;
+ frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
if (hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_601)
- ext_colorimetry =
- HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601;
+ frame.extended_colorimetry =
+ HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/
- ext_colorimetry =
- HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC709;
+ frame.extended_colorimetry =
+ HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
} else if (hdmi->hdmi_data.enc_out_format != RGB) {
if (hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_601)
- colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_SMPTE;
+ frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
else /*hdmi->hdmi_data.colorimetry == HDMI_COLORIMETRY_ITU_709*/
- colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_ITUR;
- ext_colorimetry = HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601;
+ frame.colorimetry = HDMI_COLORIMETRY_ITU_709;
+ frame.extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
} else { /* Carries no data */
- colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_NO_DATA;
- ext_colorimetry = HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601;
+ frame.colorimetry = HDMI_COLORIMETRY_NONE;
+ frame.extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
}
- val = colorimetry | coded_ratio | act_ratio;
+ frame.scan_mode = HDMI_SCAN_MODE_NONE;
+
+ /*
+ * The Designware IP uses a different byte format from standard
+ * AVI info frames, though generally the bits are in the correct
+ * bytes.
+ */
+
+ /*
+ * AVI data byte 1 differences: Colorspace in bits 4,5 rather than 5,6,
+ * active aspect present in bit 6 rather than 4.
+ */
+ val = (frame.colorspace & 3) << 4 | (frame.scan_mode & 0x3);
+ if (frame.active_aspect & 15)
+ val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT;
+ if (frame.top_bar || frame.bottom_bar)
+ val |= HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR;
+ if (frame.left_bar || frame.right_bar)
+ val |= HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR;
+ hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0);
+
+ /* AVI data byte 2 differences: none */
+ val = ((frame.colorimetry & 0x3) << 6) |
+ ((frame.picture_aspect & 0x3) << 4) |
+ (frame.active_aspect & 0xf);
hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1);
- /* AVI Data Byte 3 */
- val = HDMI_FC_AVICONF2_IT_CONTENT_NO_DATA | ext_colorimetry |
- HDMI_FC_AVICONF2_RGB_QUANT_DEFAULT |
- HDMI_FC_AVICONF2_SCALING_NONE;
+ /* AVI data byte 3 differences: none */
+ val = ((frame.extended_colorimetry & 0x7) << 4) |
+ ((frame.quantization_range & 0x3) << 2) |
+ (frame.nups & 0x3);
+ if (frame.itc)
+ val |= HDMI_FC_AVICONF2_IT_CONTENT_VALID;
hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2);
- /* AVI Data Byte 4 */
- hdmi_writeb(hdmi, hdmi->vic, HDMI_FC_AVIVID);
+ /* AVI data byte 4 differences: none */
+ val = frame.video_code & 0x7f;
+ hdmi_writeb(hdmi, val, HDMI_FC_AVIVID);
/* AVI Data Byte 5- set up input and output pixel repetition */
val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) <<
@@ -996,20 +1001,23 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi)
HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK);
hdmi_writeb(hdmi, val, HDMI_FC_PRCONF);
- /* IT Content and quantization range = don't care */
- val = HDMI_FC_AVICONF3_IT_CONTENT_TYPE_GRAPHICS |
- HDMI_FC_AVICONF3_QUANT_RANGE_LIMITED;
+ /*
+ * AVI data byte 5 differences: content type in 0,1 rather than 4,5,
+ * ycc range in bits 2,3 rather than 6,7
+ */
+ val = ((frame.ycc_quantization_range & 0x3) << 2) |
+ (frame.content_type & 0x3);
hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3);
/* AVI Data Bytes 6-13 */
- hdmi_writeb(hdmi, 0, HDMI_FC_AVIETB0);
- hdmi_writeb(hdmi, 0, HDMI_FC_AVIETB1);
- hdmi_writeb(hdmi, 0, HDMI_FC_AVISBB0);
- hdmi_writeb(hdmi, 0, HDMI_FC_AVISBB1);
- hdmi_writeb(hdmi, 0, HDMI_FC_AVIELB0);
- hdmi_writeb(hdmi, 0, HDMI_FC_AVIELB1);
- hdmi_writeb(hdmi, 0, HDMI_FC_AVISRB0);
- hdmi_writeb(hdmi, 0, HDMI_FC_AVISRB1);
+ hdmi_writeb(hdmi, frame.top_bar & 0xff, HDMI_FC_AVIETB0);
+ hdmi_writeb(hdmi, (frame.top_bar >> 8) & 0xff, HDMI_FC_AVIETB1);
+ hdmi_writeb(hdmi, frame.bottom_bar & 0xff, HDMI_FC_AVISBB0);
+ hdmi_writeb(hdmi, (frame.bottom_bar >> 8) & 0xff, HDMI_FC_AVISBB1);
+ hdmi_writeb(hdmi, frame.left_bar & 0xff, HDMI_FC_AVIELB0);
+ hdmi_writeb(hdmi, (frame.left_bar >> 8) & 0xff, HDMI_FC_AVIELB1);
+ hdmi_writeb(hdmi, frame.right_bar & 0xff, HDMI_FC_AVISRB0);
+ hdmi_writeb(hdmi, (frame.right_bar >> 8) & 0xff, HDMI_FC_AVISRB1);
}
static void hdmi_av_composer(struct dw_hdmi *hdmi,
@@ -1243,7 +1251,7 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
hdmi_enable_audio_clk(hdmi);
/* HDMI Initialization Step F - Configure AVI InfoFrame */
- hdmi_config_AVI(hdmi);
+ hdmi_config_AVI(hdmi, mode);
}
hdmi_video_packetize(hdmi);
--
1.8.3.1
More information about the dri-devel
mailing list