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Thu, 06 Feb 2020 11:18:48 -0800 (PST) From: Neil Armstrong To: a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@siol.net, boris.brezillon@collabora.com Subject: [PATCH v4 09/11] drm/meson: venc: add support for YUV420 setup Date: Thu, 6 Feb 2020 20:18:32 +0100 Message-Id: <20200206191834.6125-10-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200206191834.6125-1-narmstrong@baylibre.com> References: <20200206191834.6125-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200206_111851_344802_06E62841 X-CRM114-Status: GOOD ( 12.31 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Neil Armstrong Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org This patch adds encoding support for the YUV420 output from the Amlogic Meson SoCs Video Processing Unit to the HDMI Controller. The YUV420 is obtained by generating a YUV444 pixel stream like the classic HDMI display modes, but then the Video Encoder output can be configured to down-sample the YUV444 pixel stream to a YUV420 stream. In addition if pixel stream down-sampling, the Y Cb Cr components must also be mapped differently to align with the HDMI2.0 specifications. Signed-off-by: Neil Armstrong --- drivers/gpu/drm/meson/meson_dw_hdmi.c | 3 ++- drivers/gpu/drm/meson/meson_venc.c | 8 +++++--- drivers/gpu/drm/meson/meson_venc.h | 2 ++ 3 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c index 686c47106a18..f5d46d082534 100644 --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c @@ -772,7 +772,8 @@ static void meson_venc_hdmi_encoder_mode_set(struct drm_bridge *bridge, DRM_DEBUG_DRIVER("\"%s\" vic %d\n", mode->name, vic); /* VENC + VENC-DVI Mode setup */ - meson_venc_hdmi_mode_set(priv, vic, mode); + meson_venc_hdmi_mode_set(priv, vic, ycrcb_map, false, + VPU_HDMI_OUTPUT_CBYCR); /* VCLK Set clock */ dw_hdmi_set_vclk(dw_hdmi, mode); diff --git a/drivers/gpu/drm/meson/meson_venc.c b/drivers/gpu/drm/meson/meson_venc.c index a9ab78970bfe..f93c725b6f02 100644 --- a/drivers/gpu/drm/meson/meson_venc.c +++ b/drivers/gpu/drm/meson/meson_venc.c @@ -946,6 +946,8 @@ bool meson_venc_hdmi_venc_repeat(int vic) EXPORT_SYMBOL_GPL(meson_venc_hdmi_venc_repeat); void meson_venc_hdmi_mode_set(struct meson_drm *priv, int vic, + unsigned int ycrcb_map, + bool yuv420_mode, const struct drm_display_mode *mode) { union meson_hdmi_venc_mode *vmode = NULL; @@ -1528,14 +1530,14 @@ void meson_venc_hdmi_mode_set(struct meson_drm *priv, int vic, if (mode->flags & DRM_MODE_FLAG_PVSYNC) reg |= VPU_HDMI_INV_VSYNC; - /* Output data format: CbYCr */ - reg |= VPU_HDMI_OUTPUT_CBYCR; + /* Output data format */ + reg |= ycrcb_map; /* * Write rate to the async FIFO between VENC and HDMI. * One write every 2 wr_clk. */ - if (venc_repeat) + if (venc_repeat || yuv420_mode) reg |= VPU_HDMI_WR_RATE(2); /* diff --git a/drivers/gpu/drm/meson/meson_venc.h b/drivers/gpu/drm/meson/meson_venc.h index 1abdcbdf51c0..9138255ffc9e 100644 --- a/drivers/gpu/drm/meson/meson_venc.h +++ b/drivers/gpu/drm/meson/meson_venc.h @@ -60,6 +60,8 @@ extern struct meson_cvbs_enci_mode meson_cvbs_enci_ntsc; void meson_venci_cvbs_mode_set(struct meson_drm *priv, struct meson_cvbs_enci_mode *mode); void meson_venc_hdmi_mode_set(struct meson_drm *priv, int vic, + unsigned int ycrcb_map, + bool yuv420_mode, const struct drm_display_mode *mode); unsigned int meson_venci_get_field(struct meson_drm *priv); -- 2.22.0 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic