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[31.10.206.125]) by smtp.gmail.com with ESMTPSA id 9-20020a170906004900b006f3ef214e3bsm58819ejg.161.2022.05.16.09.29.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 May 2022 09:29:10 -0700 (PDT) From: Max Krummenacher To: max.krummenacher@toradex.com Cc: Christoph Niedermaier , Laurent Pinchart , Marek Vasut , Francesco Dolcini , Maxime Ripard , Dave Stevenson , Daniel Vetter , David Airlie , Sam Ravnborg , Thierry Reding , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 2/2] drm/panel: simple: add bus-format support for panel-dpi Date: Mon, 16 May 2022 18:28:26 +0200 Message-Id: <20220516162826.23025-3-max.oss.09@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220516162826.23025-1-max.oss.09@gmail.com> References: <20220516162826.23025-1-max.oss.09@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Max Krummenacher Evaluate the device tree bus-format property to set bus_format for a 'panel-dpi' panel. Additionally infer the bpc value from the given bus-format. Valid values for bus-format are found in: This completes the addition of panel-dpi to completely specify a panel-simple panel from the device tree. Signed-off-by: Max Krummenacher --- drivers/gpu/drm/panel/panel-simple.c | 43 ++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index a34f4198a534..090c60abb014 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -21,6 +21,7 @@ * DEALINGS IN THE SOFTWARE. */ +#include #include #include #include @@ -453,6 +454,7 @@ static int panel_dpi_probe(struct device *dev, struct panel_desc *desc; unsigned int bus_flags; struct videomode vm; + u32 bus_format; int ret; np = dev->of_node; @@ -477,6 +479,47 @@ static int panel_dpi_probe(struct device *dev, of_property_read_u32(np, "width-mm", &desc->size.width); of_property_read_u32(np, "height-mm", &desc->size.height); + if (!of_property_read_u32(np, "bus-format", &bus_format)) { + /* infer bpc from bus-format */ + switch (bus_format) { + case DT_MEDIA_BUS_FMT_RGB565_1X16: + desc->bus_format = MEDIA_BUS_FMT_RGB565_1X16; + desc->bpc = 6; + break; + case DT_MEDIA_BUS_FMT_RGB666_1X18: + desc->bus_format = MEDIA_BUS_FMT_RGB666_1X18; + desc->bpc = 6; + break; + case DT_MEDIA_BUS_FMT_RGB666_1X24_CPADHI: + desc->bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI; + desc->bpc = 6; + break; + case DT_MEDIA_BUS_FMT_BGR888_1X24: + desc->bus_format = MEDIA_BUS_FMT_BGR888_1X24; + desc->bpc = 8; + break; + case DT_MEDIA_BUS_FMT_GBR888_1X24: + desc->bus_format = MEDIA_BUS_FMT_GBR888_1X24; + desc->bpc = 8; + break; + case DT_MEDIA_BUS_FMT_RBG888_1X24: + desc->bus_format = MEDIA_BUS_FMT_RBG888_1X24; + desc->bpc = 8; + break; + case DT_MEDIA_BUS_FMT_RGB888_1X24: + desc->bus_format = MEDIA_BUS_FMT_RGB888_1X24; + desc->bpc = 8; + break; + case DT_MEDIA_BUS_FMT_RGB888_1X32_PADHI: + desc->bus_format = MEDIA_BUS_FMT_RGB888_1X32_PADHI; + desc->bpc = 8; + break; + default: + dev_err(dev, "%pOF: unknown bus-format property\n", np); + return -EINVAL; + } + } + /* Extract bus_flags from display_timing */ bus_flags = 0; vm.flags = timing->flags; -- 2.20.1