Messages in this thread | | | From | Sandor Yu <> | Subject | RE: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration options | Date | Mon, 10 Jul 2023 08:11:18 +0000 |
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> > > On Mon, 10 Jul 2023 at 11:01, Sandor Yu <sandor.yu@nxp.com> wrote: > > > > > > > > > -----Original Message----- > > > From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > > > Sent: 2023年7月10日 15:44 > > > To: Sandor Yu <sandor.yu@nxp.com>; andrzej.hajda@intel.com; > > > neil.armstrong@linaro.org; robert.foss@linaro.org; > > > Laurent.pinchart@ideasonboard.com; jonas@kwiboo.se; > > > jernej.skrabec@gmail.com; airlied@gmail.com; daniel@ffwll.ch; > > > robh+dt@kernel.org; krzysztof.kozlowski+dt@linaro.org; > > > shawnguo@kernel.org; s.hauer@pengutronix.de; festevam@gmail.com; > > > vkoul@kernel.org; dri-devel@lists.freedesktop.org; > > > devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; > > > linux-kernel@vger.kernel.org; linux-phy@lists.infradead.org > > > Cc: kernel@pengutronix.de; dl-linux-imx <linux-imx@nxp.com>; Oliver > > > Brown <oliver.brown@nxp.com> > > > Subject: Re: [EXT] Re: [PATCH v6 4/8] phy: Add HDMI configuration > > > options > > > > > > > > > On 10/07/2023 10:28, Sandor Yu wrote: > > > > Hi Dmitry, > > > > > > > > Thanks for your comments, > > > > > > > >> From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> On > > > >> 15/06/2023 04:38, Sandor Yu wrote: > > > >>> Allow HDMI PHYs to be configured through the generic functions > > > >>> through a custom structure added to the generic union. > > > >>> > > > >>> The parameters added here are based on HDMI PHY implementation > > > >>> practices. The current set of parameters should cover the > > > >>> potential users. > > > >>> > > > >>> Signed-off-by: Sandor Yu <Sandor.yu@nxp.com> > > > >>> --- > > > >>> include/linux/phy/phy-hdmi.h | 38 > > > >> ++++++++++++++++++++++++++++++++++++ > > > >>> include/linux/phy/phy.h | 7 ++++++- > > > >>> 2 files changed, 44 insertions(+), 1 deletion(-) > > > >>> create mode 100644 include/linux/phy/phy-hdmi.h > > > >>> > > > >>> diff --git a/include/linux/phy/phy-hdmi.h > > > >>> b/include/linux/phy/phy-hdmi.h new file mode 100644 index > > > >>> 000000000000..5765aa5bc175 > > > >>> --- /dev/null > > > >>> +++ b/include/linux/phy/phy-hdmi.h > > > >>> @@ -0,0 +1,38 @@ > > > >>> +/* SPDX-License-Identifier: GPL-2.0 */ > > > >>> +/* > > > >>> + * Copyright 2022 NXP > > > >>> + */ > > > >>> + > > > >>> +#ifndef __PHY_HDMI_H_ > > > >>> +#define __PHY_HDMI_H_ > > > >>> + > > > >>> +/** > > > >>> + * Pixel Encoding as HDMI Specification > > > >>> + * RGB, YUV422, YUV444:HDMI Specification 1.4a Section 6.5 > > > >>> + * YUV420: HDMI Specification 2.a Section 7.1 */ enum > > > >>> +hdmi_phy_colorspace { > > > >>> + HDMI_PHY_COLORSPACE_RGB, /* RGB 4:4:4 */ > > > >>> + HDMI_PHY_COLORSPACE_YUV422, /* YCbCr 4:2:2 */ > > > >>> + HDMI_PHY_COLORSPACE_YUV444, /* YCbCr 4:4:4 */ > > > >>> + HDMI_PHY_COLORSPACE_YUV420, /* YCbCr 4:2:0 */ > > > >>> + HDMI_PHY_COLORSPACE_RESERVED4, > > > >>> + HDMI_PHY_COLORSPACE_RESERVED5, > > > >>> + HDMI_PHY_COLORSPACE_RESERVED6, }; > > > >> > > > >> This enum duplicates enum hdmi_colorspace from <linux/hdmi.h> > > > >> HDMI > > > >> 2.0 defines '7' to be IDO-defined. > > > >> > > > >> Would it be better to use that enum instead? > > > > Accept. I will create head file hdmi_colorspace.h to reuse enum > > > hdmi_colorspace in <linux/hdmi.h>. > > > > > > Excuse me, it was supposed to be a question. > > > > > > Do you need another header file to reuse this enum? > > I'm not sure community whether would accept the patch that simply > > include <linux/hdmi.h> in phy-hdmi.h because there are lots of other > definition in <linux/hdmi.h> that not need by phy-hdmi.h. > > If the answer is yes, I happy to follow. > > In my opinion it's a better alternative to creating yet another header. OK, I will try include <linux/hdmi.h> in phy-hdmi.h in the next version. Thanks for your comments. B,R Sandor > > > > > > > > > > > > > > B.R > > > > Sandor > > > >> > > > >>> + > > > >>> +/** > > > >>> + * struct phy_configure_opts_hdmi - HDMI configuration set > > > >>> + * @pixel_clk_rate: Pixel clock of video modes in KHz. > > > >>> + * @bpc: Maximum bits per color channel. > > > >>> + * @color_space: Colorspace in enum hdmi_phy_colorspace. > > > >>> + * > > > >>> + * This structure is used to represent the configuration state > > > >>> +of a HDMI > > > phy. > > > >>> + */ > > > >>> +struct phy_configure_opts_hdmi { > > > >>> + unsigned int pixel_clk_rate; > > > >>> + unsigned int bpc; > > > >>> + enum hdmi_phy_colorspace color_space; }; > > > >>> + > > > >>> +#endif /* __PHY_HDMI_H_ */ > > > >> > > > >> [skipped the rest] > > > >> > > > >> -- > > > >> With best wishes > > > >> Dmitry > > > > > > > > > > -- > > > With best wishes > > > Dmitry > > > > B.R > > Sandor > > > > > -- > With best wishes > Dmitry
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