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Message-ID: <CAPY8ntDzcyLNp=DYesmLcGpaaPgbAhJHWTVsTabdKUARS3V5xA@mail.gmail.com>
Date: Thu, 14 Dec 2023 15:04:32 +0000
From: Dave Stevenson <dave.stevenson@...pberrypi.com>
To: Maxime Ripard <mripard@...nel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>, Emma Anholt <emma@...olt.net>,
Jonathan Corbet <corbet@....net>,
Sandy Huang <hjc@...k-chips.com>,
Heiko Stübner <heiko@...ech.de>,
Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>,
Hans Verkuil <hverkuil@...all.nl>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
linux-rockchip@...ts.infradead.org, linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH v5 13/44] drm/connector: hdmi: Calculate TMDS character rate
On Thu, 7 Dec 2023 at 15:50, Maxime Ripard <mripard@...nel.org> wrote:
>
> Most HDMI drivers have some code to calculate the TMDS character rate,
> usually to adjust an internal clock to match what the mode requires.
>
> Since the TMDS character rates mostly depends on the resolution, whether
> we need to repeat pixels or not, the bpc count and the format, we can
> now derive it from the HDMI connector state that stores all those infos
> and remove the duplication from drivers.
>
> Signed-off-by: Maxime Ripard <mripard@...nel.org>
Reviewed-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
> ---
> drivers/gpu/drm/drm_atomic.c | 1 +
> drivers/gpu/drm/drm_atomic_state_helper.c | 44 +++++
> .../gpu/drm/tests/drm_atomic_state_helper_test.c | 169 ++++++++++++++++
> drivers/gpu/drm/tests/drm_kunit_edid.h | 216 +++++++++++++++++++++
> include/drm/drm_connector.h | 5 +
> 5 files changed, 435 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 7aaa2a4d70d9..4f6493f91eed 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -1150,6 +1150,7 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
> drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc);
> drm_printf(p, "\toutput_format=%s\n",
> drm_hdmi_connector_get_output_format_name(state->hdmi.output_format));
> + drm_printf(p, "\ttmds_char_rate=%llu\n", state->hdmi.tmds_char_rate);
> }
>
> if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
> diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
> index 92e1b087c3d0..74bc3cc53c2d 100644
> --- a/drivers/gpu/drm/drm_atomic_state_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_state_helper.c
> @@ -682,6 +682,41 @@ static bool hdmi_is_full_range(const struct drm_connector *connector,
> return drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL ? true : false;
> }
>
> +static enum drm_mode_status
> +hdmi_clock_valid(const struct drm_connector *connector,
> + const struct drm_display_mode *mode,
> + unsigned long long clock)
> +{
> + const struct drm_display_info *info = &connector->display_info;
> +
> + if (info->max_tmds_clock && clock > info->max_tmds_clock * 1000)
> + return MODE_CLOCK_HIGH;
> +
> + return MODE_OK;
> +}
> +
> +static int
> +hdmi_compute_clock(const struct drm_connector *connector,
> + struct drm_connector_state *state,
> + const struct drm_display_mode *mode,
> + unsigned int bpc, enum hdmi_colorspace fmt)
> +{
> + enum drm_mode_status status;
> + unsigned long long clock;
> +
> + clock = drm_connector_hdmi_compute_mode_clock(mode, bpc, fmt);
> + if (!clock)
> + return -EINVAL;
> +
> + status = hdmi_clock_valid(connector, mode, clock);
> + if (status != MODE_OK)
> + return -EINVAL;
> +
> + state->hdmi.tmds_char_rate = clock;
> +
> + return 0;
> +}
> +
> /**
> * drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
> * @connector: DRM Connector
> @@ -701,9 +736,18 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
> drm_atomic_get_old_connector_state(state, connector);
> struct drm_connector_state *new_state =
> drm_atomic_get_new_connector_state(state, connector);
> + const struct drm_display_mode *mode =
> + connector_state_get_mode(new_state);
> + int ret;
>
> new_state->hdmi.is_full_range = hdmi_is_full_range(connector, new_state);
>
> + ret = hdmi_compute_clock(connector, new_state, mode,
> + new_state->hdmi.output_bpc,
> + new_state->hdmi.output_format);
> + if (ret)
> + return ret;
> +
> if (old_state->hdmi.broadcast_rgb != new_state->hdmi.broadcast_rgb ||
> old_state->hdmi.output_bpc != new_state->hdmi.output_bpc ||
> old_state->hdmi.output_format != new_state->hdmi.output_format) {
> diff --git a/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c b/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
> index 4e2ec436987b..d76fafb91025 100644
> --- a/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_atomic_state_helper_test.c
> @@ -70,6 +70,9 @@ static int light_up_connector(struct kunit *test,
> conn_state = drm_atomic_get_connector_state(state, connector);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
>
> + conn_state->hdmi.output_bpc = connector->max_bpc;
> + conn_state->hdmi.output_format = HDMI_COLORSPACE_RGB;
> +
> ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> @@ -813,6 +816,146 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
> KUNIT_EXPECT_FALSE(test, crtc_state->mode_changed);
> }
>
> +/*
> + * Test that when doing a commit which would use RGB 8bpc, the TMDS
> + * clock rate stored in the connector state is equal to the mode clock
> + */
> +static void drm_test_check_tmds_char_rate_rgb_8bpc(struct kunit *test)
> +{
> + struct drm_atomic_helper_connector_hdmi_priv *priv;
> + struct drm_modeset_acquire_ctx *ctx;
> + struct drm_connector_state *conn_state;
> + struct drm_display_mode *preferred;
> + struct drm_connector *conn;
> + struct drm_device *drm;
> + struct drm_crtc *crtc;
> + int ret;
> +
> + priv = drm_atomic_helper_connector_hdmi_init(test,
> + BIT(HDMI_COLORSPACE_RGB),
> + 8);
> + KUNIT_ASSERT_NOT_NULL(test, priv);
> +
> + conn = &priv->connector;
> + ret = set_connector_edid(test, conn,
> + test_edid_hdmi_1080p_rgb_max_200mhz,
> + ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
> + KUNIT_ASSERT_EQ(test, ret, 0);
> +
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> + preferred = find_preferred_mode(conn);
> + KUNIT_ASSERT_NOT_NULL(test, preferred);
> + KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
> +
> + drm = &priv->drm;
> + crtc = priv->crtc;
> + ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> + KUNIT_ASSERT_EQ(test, ret, 0);
> +
> + conn_state = conn->state;
> + KUNIT_ASSERT_NOT_NULL(test, conn_state);
> +
> + KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_bpc, 8);
> + KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
> + KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1000);
> +}
> +
> +/*
> + * Test that when doing a commit which would use RGB 10bpc, the TMDS
> + * clock rate stored in the connector state is equal to 1.25 times the
> + * mode pixel clock
> + */
> +static void drm_test_check_tmds_char_rate_rgb_10bpc(struct kunit *test)
> +{
> + struct drm_atomic_helper_connector_hdmi_priv *priv;
> + struct drm_modeset_acquire_ctx *ctx;
> + struct drm_connector_state *conn_state;
> + struct drm_display_mode *preferred;
> + struct drm_connector *conn;
> + struct drm_device *drm;
> + struct drm_crtc *crtc;
> + int ret;
> +
> + priv = drm_atomic_helper_connector_hdmi_init(test,
> + BIT(HDMI_COLORSPACE_RGB),
> + 10);
> + KUNIT_ASSERT_NOT_NULL(test, priv);
> +
> + conn = &priv->connector;
> + ret = set_connector_edid(test, conn,
> + test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz,
> + ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz));
> + KUNIT_ASSERT_EQ(test, ret, 0);
> +
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> + preferred = find_preferred_mode(conn);
> + KUNIT_ASSERT_NOT_NULL(test, preferred);
> + KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
> +
> + drm = &priv->drm;
> + crtc = priv->crtc;
> + ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> + KUNIT_ASSERT_EQ(test, ret, 0);
> +
> + conn_state = conn->state;
> + KUNIT_ASSERT_NOT_NULL(test, conn_state);
> +
> + KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_bpc, 10);
> + KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
> + KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1250);
> +}
> +
> +/*
> + * Test that when doing a commit which would use RGB 12bpc, the TMDS
> + * clock rate stored in the connector state is equal to 1.5 times the
> + * mode pixel clock
> + */
> +static void drm_test_check_tmds_char_rate_rgb_12bpc(struct kunit *test)
> +{
> + struct drm_atomic_helper_connector_hdmi_priv *priv;
> + struct drm_modeset_acquire_ctx *ctx;
> + struct drm_connector_state *conn_state;
> + struct drm_display_mode *preferred;
> + struct drm_connector *conn;
> + struct drm_device *drm;
> + struct drm_crtc *crtc;
> + int ret;
> +
> + priv = drm_atomic_helper_connector_hdmi_init(test,
> + BIT(HDMI_COLORSPACE_RGB),
> + 12);
> + KUNIT_ASSERT_NOT_NULL(test, priv);
> +
> + conn = &priv->connector;
> + ret = set_connector_edid(test, conn,
> + test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz,
> + ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz));
> + KUNIT_ASSERT_EQ(test, ret, 0);
> +
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> + preferred = find_preferred_mode(conn);
> + KUNIT_ASSERT_NOT_NULL(test, preferred);
> + KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
> +
> + drm = &priv->drm;
> + crtc = priv->crtc;
> + ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> + KUNIT_ASSERT_EQ(test, ret, 0);
> +
> + conn_state = conn->state;
> + KUNIT_ASSERT_NOT_NULL(test, conn_state);
> +
> + KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_bpc, 12);
> + KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
> + KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1500);
> +}
> +
> static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
> KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode),
> KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode_vic_1),
> @@ -824,6 +967,9 @@ static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
> KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_not_changed),
> KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_changed),
> KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_not_changed),
> + KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_8bpc),
> + KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_10bpc),
> + KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_12bpc),
> /*
> * TODO: We should have tests to check that a change in the
> * format triggers a CRTC mode change just like we do for the
> @@ -955,12 +1101,35 @@ static void drm_test_check_format_value(struct kunit *test)
> KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
> }
>
> +/*
> + * Test that the value of the output format property out of reset is set
> + * to 0, and will be computed at atomic_check time.
> + */
> +static void drm_test_check_tmds_char_value(struct kunit *test)
> +{
> + struct drm_atomic_helper_connector_hdmi_priv *priv;
> + struct drm_connector_state *conn_state;
> + struct drm_connector *conn;
> +
> + priv = drm_atomic_helper_connector_hdmi_init(test,
> + BIT(HDMI_COLORSPACE_RGB) |
> + BIT(HDMI_COLORSPACE_YUV422) |
> + BIT(HDMI_COLORSPACE_YUV444),
> + 12);
> + KUNIT_ASSERT_NOT_NULL(test, priv);
> +
> + conn = &priv->connector;
> + conn_state = conn->state;
> + KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, 0);
> +}
> +
> static struct kunit_case drm_atomic_helper_connector_hdmi_reset_tests[] = {
> KUNIT_CASE(drm_test_check_broadcast_rgb_value),
> KUNIT_CASE(drm_test_check_bpc_8_value),
> KUNIT_CASE(drm_test_check_bpc_10_value),
> KUNIT_CASE(drm_test_check_bpc_12_value),
> KUNIT_CASE(drm_test_check_format_value),
> + KUNIT_CASE(drm_test_check_tmds_char_value),
> { }
> };
>
> diff --git a/drivers/gpu/drm/tests/drm_kunit_edid.h b/drivers/gpu/drm/tests/drm_kunit_edid.h
> index 2bba316de064..24f3377ef0f0 100644
> --- a/drivers/gpu/drm/tests/drm_kunit_edid.h
> +++ b/drivers/gpu/drm/tests/drm_kunit_edid.h
> @@ -103,4 +103,220 @@ const unsigned char test_edid_hdmi_1080p_rgb_max_200mhz[] = {
> 0x00, 0x00, 0x00, 0xd0
> };
>
> +/*
> + * edid-decode (hex):
> + *
> + * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
> + * 00 21 01 03 81 a0 5a 78 1a 00 00 00 00 00 00 00
> + * 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
> + * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
> + * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
> + * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
> + * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 7a
> + *
> + * 02 03 1b b1 e3 05 00 20 41 10 e2 00 ca 6d 03 0c
> + * 00 12 34 78 28 20 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a8
> + *
> + * ----------------
> + *
> + * Block 0, Base EDID:
> + * EDID Structure Version & Revision: 1.3
> + * Vendor & Product Identification:
> + * Manufacturer: LNX
> + * Model: 42
> + * Made in: 2023
> + * Basic Display Parameters & Features:
> + * Digital display
> + * DFP 1.x compatible TMDS
> + * Maximum image size: 160 cm x 90 cm
> + * Gamma: 2.20
> + * Undefined display color type
> + * First detailed timing is the preferred timing
> + * Color Characteristics:
> + * Red : 0.0000, 0.0000
> + * Green: 0.0000, 0.0000
> + * Blue : 0.0000, 0.0000
> + * White: 0.0000, 0.0000
> + * Established Timings I & II:
> + * DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
> + * Standard Timings: none
> + * Detailed Timing Descriptors:
> + * DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
> + * Hfront 88 Hsync 44 Hback 148 Hpol P
> + * Vfront 4 Vsync 5 Vback 36 Vpol P
> + * Display Product Name: 'Test EDID'
> + * Display Range Limits:
> + * Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
> + * Dummy Descriptor:
> + * Extension blocks: 1
> + * Checksum: 0x7a
> + *
> + * ----------------
> + *
> + * Block 1, CTA-861 Extension Block:
> + * Revision: 3
> + * Underscans IT Video Formats by default
> + * Supports YCbCr 4:4:4
> + * Supports YCbCr 4:2:2
> + * Native detailed modes: 1
> + * Colorimetry Data Block:
> + * sRGB
> + * Video Data Block:
> + * VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
> + * Video Capability Data Block:
> + * YCbCr quantization: Selectable (via AVI YQ)
> + * RGB quantization: Selectable (via AVI Q)
> + * PT scan behavior: No Data
> + * IT scan behavior: Always Underscanned
> + * CE scan behavior: Always Underscanned
> + * Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
> + * Source physical address: 1.2.3.4
> + * DC_48bit
> + * DC_36bit
> + * DC_30bit
> + * DC_Y444
> + * Maximum TMDS clock: 200 MHz
> + * Extended HDMI video details:
> + * Checksum: 0xa8 Unused space in Extension Block: 100 bytes
> + */
> +const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz[] = {
> + 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
> + 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
> + 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
> + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
> + 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
> + 0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
> + 0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
> + 0x46, 0x1e, 0x46, 0x0f, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
> + 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x7a, 0x02, 0x03, 0x1b, 0xb1,
> + 0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0xca, 0x6d, 0x03, 0x0c,
> + 0x00, 0x12, 0x34, 0x78, 0x28, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0xa8
> +};
> +
> +/*
> + * edid-decode (hex):
> + *
> + * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
> + * 00 21 01 03 81 a0 5a 78 0a 00 00 00 00 00 00 00
> + * 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
> + * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
> + * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
> + * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
> + * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 8a
> + *
> + * 02 03 1b b1 e3 05 00 20 41 10 e2 00 ca 6d 03 0c
> + * 00 12 34 78 44 20 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8c
> + *
> + * ----------------
> + *
> + * Block 0, Base EDID:
> + * EDID Structure Version & Revision: 1.3
> + * Vendor & Product Identification:
> + * Manufacturer: LNX
> + * Model: 42
> + * Made in: 2023
> + * Basic Display Parameters & Features:
> + * Digital display
> + * DFP 1.x compatible TMDS
> + * Maximum image size: 160 cm x 90 cm
> + * Gamma: 2.20
> + * RGB color display
> + * First detailed timing is the preferred timing
> + * Color Characteristics:
> + * Red : 0.0000, 0.0000
> + * Green: 0.0000, 0.0000
> + * Blue : 0.0000, 0.0000
> + * White: 0.0000, 0.0000
> + * Established Timings I & II:
> + * DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
> + * Standard Timings: none
> + * Detailed Timing Descriptors:
> + * DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
> + * Hfront 88 Hsync 44 Hback 148 Hpol P
> + * Vfront 4 Vsync 5 Vback 36 Vpol P
> + * Display Product Name: 'Test EDID'
> + * Display Range Limits:
> + * Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
> + * Dummy Descriptor:
> + * Extension blocks: 1
> + * Checksum: 0x8a
> + *
> + * ----------------
> + *
> + * Block 1, CTA-861 Extension Block:
> + * Revision: 3
> + * Underscans IT Video Formats by default
> + * Supports YCbCr 4:4:4
> + * Supports YCbCr 4:2:2
> + * Native detailed modes: 1
> + * Colorimetry Data Block:
> + * sRGB
> + * Video Data Block:
> + * VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
> + * Video Capability Data Block:
> + * YCbCr quantization: Selectable (via AVI YQ)
> + * RGB quantization: Selectable (via AVI Q)
> + * PT scan behavior: No Data
> + * IT scan behavior: Always Underscanned
> + * CE scan behavior: Always Underscanned
> + * Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
> + * Source physical address: 1.2.3.4
> + * DC_48bit
> + * DC_36bit
> + * DC_30bit
> + * DC_Y444
> + * Maximum TMDS clock: 340 MHz
> + * Extended HDMI video details:
> + * Checksum: 0x8c Unused space in Extension Block: 100 bytes
> + */
> +const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz[] = {
> + 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
> + 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
> + 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
> + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
> + 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
> + 0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
> + 0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
> + 0x46, 0x1e, 0x46, 0x0f, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
> + 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x8a, 0x02, 0x03, 0x1b, 0xb1,
> + 0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0xca, 0x6d, 0x03, 0x0c,
> + 0x00, 0x12, 0x34, 0x78, 0x44, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> + 0x00, 0x00, 0x00, 0x8c
> +};
> +
> #endif // DRM_KUNIT_EDID_H_
> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
> index 0cc5a8732664..59016d9c17f5 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -1085,6 +1085,11 @@ struct drm_connector_state {
> * @output_format: Pixel format to output in.
> */
> enum hdmi_colorspace output_format;
> +
> + /**
> + * @tmds_char_rate: TMDS Character Rate, in Hz.
> + */
> + unsigned long long tmds_char_rate;
> } hdmi;
> };
>
>
> --
> 2.43.0
>
>
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