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Acked-by: Conor Dooley Signed-off-by: Michael Riesch --- Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Docum= entation/devicetree/bindings/vendor-prefixes.yaml index 1e2e51401dc5..1dfafc339ddd 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -677,6 +677,8 @@ patternProperties: description: iWave Systems Technologies Pvt. Ltd. "^jadard,.*": description: Jadard Technology Inc. + "^jasonic,.*": + description: Jasonic Technology Ltd. "^jdi,.*": description: Japan Display Inc. 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JT240MHQS-HWT-EK-E3 display. Acked-by: Conor Dooley Signed-off-by: Michael Riesch --- Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/display/panel/sitronix,st778= 9v.yaml b/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.= yaml index 0da4c7e05097..ef162b51d010 100644 --- a/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml +++ b/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml @@ -18,6 +18,7 @@ properties: enum: - edt,et028013dma - inanbo,t28cp45tn89-v17 + - jasonic,jt240mhqs-hwt-ek-e3 - sitronix,st7789v =20 reg: true --=20 2.37.2 From nobody Sat Feb 7 18:21:01 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 322D5C04A94 for ; Fri, 4 Aug 2023 13:03:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230241AbjHDNDE (ORCPT ); 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Here, the area to be displayed can be restricted in one direction (by default, in vertical direction). This is useful for panels that are partially occluded by design. Add support for the partial mode. Signed-off-by: Michael Riesch Reviewed-by: Neil Armstrong --- drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 43 ++++++++++++++++++++++= ++-- 1 file changed, 41 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/d= rm/panel/panel-sitronix-st7789v.c index 0ded72ed2fcd..ebc9a3bd6db3 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -118,6 +118,9 @@ struct st7789_panel_info { u32 bus_format; u32 bus_flags; bool invert_mode; + bool partial_mode; + u16 partial_start; + u16 partial_end; }; =20 struct st7789v { @@ -345,9 +348,14 @@ static enum drm_panel_orientation st7789v_get_orientat= ion(struct drm_panel *p) static int st7789v_prepare(struct drm_panel *panel) { struct st7789v *ctx =3D panel_to_st7789v(panel); - u8 pixel_fmt, polarity; + u8 mode, pixel_fmt, polarity; int ret; =20 + if (!ctx->info->partial_mode) + mode =3D ST7789V_RGBCTRL_WO; + else + mode =3D 0; + switch (ctx->info->bus_format) { case MEDIA_BUS_FMT_RGB666_1X18: pixel_fmt =3D MIPI_DCS_PIXEL_FMT_18BIT; @@ -487,6 +495,37 @@ static int st7789v_prepare(struct drm_panel *panel) MIPI_DCS_EXIT_INVERT_MODE)); } =20 + if (ctx->info->partial_mode) { + u8 area_data[4] =3D { + (ctx->info->partial_start >> 8) & 0xff, + (ctx->info->partial_start >> 0) & 0xff, + ((ctx->info->partial_end - 1) >> 8) & 0xff, + ((ctx->info->partial_end - 1) >> 0) & 0xff, + }; + + /* Caution: if userspace ever pushes a mode different from the + * expected one (i.e., the one advertised by get_modes), we'll + * add margins. + */ + + ST7789V_TEST(ret, st7789v_write_command( + ctx, MIPI_DCS_ENTER_PARTIAL_MODE)); + + ST7789V_TEST(ret, st7789v_write_command( + ctx, MIPI_DCS_SET_PAGE_ADDRESS)); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[0])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[1])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[2])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[3])); + + ST7789V_TEST(ret, st7789v_write_command( + ctx, MIPI_DCS_SET_PARTIAL_ROWS)); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[0])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[1])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[2])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[3])); + } + ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RAMCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RAMCTRL_DM_RGB | ST7789V_RAMCTRL_RM_RGB)); @@ -494,7 +533,7 @@ static int st7789v_prepare(struct drm_panel *panel) ST7789V_RAMCTRL_MAGIC)); =20 ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RGBCTRL_CMD)); - ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_WO | + ST7789V_TEST(ret, st7789v_write_data(ctx, mode | ST7789V_RGBCTRL_RCM(2) | polarity)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_VBP(8))); --=20 2.37.2 From nobody Sat Feb 7 18:21:01 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6DB5C00528 for ; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20230718-feature-lcd-panel-v2-4-2485ca07b49d@wolfvision.net> References: <20230718-feature-lcd-panel-v2-0-2485ca07b49d@wolfvision.net> In-Reply-To: <20230718-feature-lcd-panel-v2-0-2485ca07b49d@wolfvision.net> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Sam Ravnborg , David Airlie , Daniel Vetter , Maxime Ripard , Miquel Raynal , Sebastian Reichel , Gerald Loacker Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Michael Riesch X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1691154158; l=2707; i=michael.riesch@wolfvision.net; s=20230425; h=from:subject:message-id; bh=cXTYdavmo4hFsusdgsAm73qug20kIR6Ap3YAIMZ140w=; b=Ht7w5AjpBh3lxgll+qiafR/sBy6FZDw2Ik9zg48EVHTO7keHTFvcJafH1BjhsRyBvoZFAf2hL yMRFpZg6KAYBw4jWlgYBPTN7Oa0nd7BDAtEEKgJRH5oU9xKvKo+B3aG X-Developer-Key: i=michael.riesch@wolfvision.net; a=ed25519; pk=1QQdXA2QbwdxaQn/VQK0hz04C8IBYhDowbK0hlNU4Ng= X-ClientProxiedBy: VI1P189CA0023.EURP189.PROD.OUTLOOK.COM (2603:10a6:802:2a::36) To DU0PR08MB9155.eurprd08.prod.outlook.com (2603:10a6:10:416::5) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU0PR08MB9155:EE_|AM0PR08MB5348:EE_ X-MS-Office365-Filtering-Correlation-Id: 1ed2b378-cf73-49d7-3b1b-08db94eb17a3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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While the controller features a resolution of 320x240, only an area of 280x240 is visible by design. Signed-off-by: Michael Riesch Reviewed-by: Neil Armstrong --- drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 29 ++++++++++++++++++++++= ++++ 1 file changed, 29 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/d= rm/panel/panel-sitronix-st7789v.c index ebc9a3bd6db3..88e80fe98112 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -279,6 +279,21 @@ static const struct drm_display_mode et028013dma_mode = =3D { .flags =3D DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, }; =20 +static const struct drm_display_mode jt240mhqs_hwt_ek_e3_mode =3D { + .clock =3D 6000, + .hdisplay =3D 240, + .hsync_start =3D 240 + 28, + .hsync_end =3D 240 + 28 + 10, + .htotal =3D 240 + 28 + 10 + 10, + .vdisplay =3D 280, + .vsync_start =3D 280 + 8, + .vsync_end =3D 280 + 8 + 4, + .vtotal =3D 280 + 8 + 4 + 4, + .width_mm =3D 43, + .height_mm =3D 37, + .flags =3D DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, +}; + static const struct st7789_panel_info default_panel =3D { .mode =3D &default_mode, .invert_mode =3D true, @@ -303,6 +318,17 @@ static const struct st7789_panel_info et028013dma_pane= l =3D { DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE, }; =20 +static const struct st7789_panel_info jt240mhqs_hwt_ek_e3_panel =3D { + .mode =3D &jt240mhqs_hwt_ek_e3_mode, + .invert_mode =3D true, + .bus_format =3D MEDIA_BUS_FMT_RGB666_1X18, + .bus_flags =3D DRM_BUS_FLAG_DE_HIGH | + DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE, + .partial_mode =3D true, + .partial_start =3D 38, + .partial_end =3D 318, +}; + static int st7789v_get_modes(struct drm_panel *panel, struct drm_connector *connector) { @@ -635,6 +661,7 @@ static const struct spi_device_id st7789v_spi_id[] =3D { { "st7789v", (unsigned long) &default_panel }, { "t28cp45tn89-v17", (unsigned long) &t28cp45tn89_panel }, { "et028013dma", (unsigned long) &et028013dma_panel }, + { "jt240mhqs-hwt-ek-e3", (unsigned long) &jt240mhqs_hwt_ek_e3_panel }, { } }; MODULE_DEVICE_TABLE(spi, st7789v_spi_id); @@ -643,6 +670,8 @@ static const struct of_device_id st7789v_of_match[] =3D= { { .compatible =3D "sitronix,st7789v", .data =3D &default_panel }, { .compatible =3D "inanbo,t28cp45tn89-v17", .data =3D &t28cp45tn89_panel = }, { .compatible =3D "edt,et028013dma", .data =3D &et028013dma_panel }, + { .compatible =3D "jasonic,jt240mhqs-hwt-ek-e3", + .data =3D &jt240mhqs_hwt_ek_e3_panel }, { } }; MODULE_DEVICE_TABLE(of, st7789v_of_match); --=20 2.37.2