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charset="utf-8" The Ilitek ILI9806E controller can support different transport buses, such as MIPI-DSI and SPI. The current implementation is specific to the MIPI-DSI interface. In preparation for adding SPI support, rename the current Kconfig symbol and files to be DSI-specific, clarifying the current scope of the code. Since DRM_PANEL_ILITEK_ILI9806E is not used in any in-tree defconfig, the symbol is renamed directly to DRM_PANEL_ILITEK_ILI9806E_DSI without providing a legacy compatibility alias. Signed-off-by: Dario Binacchi --- (no changes since v1) MAINTAINERS | 2 +- drivers/gpu/drm/panel/Kconfig | 6 +++--- drivers/gpu/drm/panel/Makefile | 2 +- ...{panel-ilitek-ili9806e.c =3D> panel-ilitek-ili9806e-dsi.c} | 2 +- 4 files changed, 6 insertions(+), 6 deletions(-) rename drivers/gpu/drm/panel/{panel-ilitek-ili9806e.c =3D> panel-ilitek-il= i9806e-dsi.c} (99%) diff --git a/MAINTAINERS b/MAINTAINERS index 36abe938f960..58cd78fb9731 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7917,7 +7917,7 @@ F: drivers/gpu/drm/panel/panel-ilitek-ili9805.c DRM DRIVER FOR ILITEK ILI9806E PANELS M: Michael Walle S: Maintained -F: drivers/gpu/drm/panel/panel-ilitek-ili9806e.c +F: drivers/gpu/drm/panel/panel-ilitek-ili9806e-dsi.c =20 DRM DRIVER FOR JADARD JD9365DA-H3 MIPI-DSI LCD PANELS M: Jagan Teki diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 7a83804fedca..692cd474910d 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -257,14 +257,14 @@ config DRM_PANEL_ILITEK_ILI9805 Say Y if you want to enable support for panels based on the Ilitek ILI9805 controller. =20 -config DRM_PANEL_ILITEK_ILI9806E - tristate "Ilitek ILI9806E-based panels" +config DRM_PANEL_ILITEK_ILI9806E_DSI + tristate "Ilitek ILI9806E-based DSI panels" depends on OF depends on DRM_MIPI_DSI depends on BACKLIGHT_CLASS_DEVICE help Say Y if you want to enable support for panels based on the - Ilitek ILI9806E controller. + Ilitek ILI9806E controller using DSI. =20 config DRM_PANEL_ILITEK_ILI9881C tristate "Ilitek ILI9881C-based panels" diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index b9562a6fdcb3..00071a983242 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -26,7 +26,7 @@ obj-$(CONFIG_DRM_PANEL_HYDIS_HV101HD1) +=3D panel-hydis-h= v101hd1.o obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) +=3D panel-ilitek-ili9322.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) +=3D panel-ilitek-ili9341.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9805) +=3D panel-ilitek-ili9805.o -obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9806E) +=3D panel-ilitek-ili9806e.o +obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9806E_DSI) +=3D panel-ilitek-ili9806e-dsi= .o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) +=3D panel-ilitek-ili9881c.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9882T) +=3D panel-ilitek-ili9882t.o obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) +=3D panel-innolux-ej030na.o diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9806e.c b/drivers/gpu/dr= m/panel/panel-ilitek-ili9806e-dsi.c similarity index 99% rename from drivers/gpu/drm/panel/panel-ilitek-ili9806e.c rename to drivers/gpu/drm/panel/panel-ilitek-ili9806e-dsi.c index 18aa6222b0c5..c337c4f1a1c7 100644 --- a/drivers/gpu/drm/panel/panel-ilitek-ili9806e.c +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9806e-dsi.c @@ -561,5 +561,5 @@ module_mipi_dsi_driver(ili9806e_dsi_driver); =20 MODULE_AUTHOR("Gunnar Dibbern "); MODULE_AUTHOR("Michael Walle "); -MODULE_DESCRIPTION("Ilitek ILI9806E Controller Driver"); +MODULE_DESCRIPTION("Ilitek ILI9806E Controller DSI Driver"); MODULE_LICENSE("GPL"); --=20 2.43.0 From nobody Sun Feb 8 02:56:22 2026 Received: from mail-wm1-f47.google.com (mail-wm1-f47.google.com [209.85.128.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4D92E32D7F7 for ; Wed, 4 Feb 2026 17:32:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.47 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770226325; cv=none; b=iV7uDL+M2f9p1Vq3kl8bwL4nMFlcBzb4J4CpWM980kwqQVkgTWLkUVCGoMtY2yXNJPplsth5rcOqW1yE6yH1pqBxzpphOeMw59f5YlfK59qnDjh+5ZGfIwiW5oBkJgPEmizQkwMu/3Nj7Th9P6aFaKP4s4NqvpAeDRepn+FDSGM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770226325; 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Wed, 04 Feb 2026 09:32:03 -0800 (PST) Received: from dario-ThinkPad-P14s-Gen-5.amarulasolutions.com ([2.196.42.58]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-436180640f2sm7241565f8f.39.2026.02.04.09.32.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Feb 2026 09:32:02 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: linux-amarula@amarulasolutions.com, Dario Binacchi , David Airlie , Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Michael Walle , Neil Armstrong , Simona Vetter , Thomas Zimmermann , dri-devel@lists.freedesktop.org Subject: [PATCH v4 2/4] drm/panel: ilitek-ili9806e: split core and DSI logic Date: Wed, 4 Feb 2026 18:31:18 +0100 Message-ID: <20260204173154.337674-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260204173154.337674-1-dario.binacchi@amarulasolutions.com> References: <20260204173154.337674-1-dario.binacchi@amarulasolutions.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Split the driver to support multiple transport buses. The core logic (power, GPIO, backlight) is moved to a dedicated core module, while DSI-specific code is restricted to the DSI module. Introduce DRM_PANEL_ILITEK_ILI9806E_CORE as a hidden Kconfig symbol selected by the bus-specific configuration. Signed-off-by: Dario Binacchi --- Changes in v4: - Fix "WARNING: unmet direct dependencies detected for DRM_PANEL_ILITEK_ILI9806E_CORE" reported by kernel test robot MAINTAINERS | 2 +- drivers/gpu/drm/panel/Kconfig | 4 + drivers/gpu/drm/panel/Makefile | 1 + .../drm/panel/panel-ilitek-ili9806e-core.c | 129 +++++++++++++++ .../drm/panel/panel-ilitek-ili9806e-core.h | 15 ++ .../gpu/drm/panel/panel-ilitek-ili9806e-dsi.c | 151 +++++------------- 6 files changed, 193 insertions(+), 109 deletions(-) create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9806e-core.c create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9806e-core.h diff --git a/MAINTAINERS b/MAINTAINERS index 58cd78fb9731..1daf45133c39 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7917,7 +7917,7 @@ F: drivers/gpu/drm/panel/panel-ilitek-ili9805.c DRM DRIVER FOR ILITEK ILI9806E PANELS M: Michael Walle S: Maintained -F: drivers/gpu/drm/panel/panel-ilitek-ili9806e-dsi.c +F: drivers/gpu/drm/panel/panel-ilitek-ili9806e-* =20 DRM DRIVER FOR JADARD JD9365DA-H3 MIPI-DSI LCD PANELS M: Jagan Teki diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 692cd474910d..cbfee8abba0c 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -257,11 +257,15 @@ config DRM_PANEL_ILITEK_ILI9805 Say Y if you want to enable support for panels based on the Ilitek ILI9805 controller. =20 +config DRM_PANEL_ILITEK_ILI9806E_CORE + tristate + config DRM_PANEL_ILITEK_ILI9806E_DSI tristate "Ilitek ILI9806E-based DSI panels" depends on OF depends on DRM_MIPI_DSI depends on BACKLIGHT_CLASS_DEVICE + select DRM_PANEL_ILITEK_ILI9806E_CORE help Say Y if you want to enable support for panels based on the Ilitek ILI9806E controller using DSI. diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 00071a983242..13034cadb8d8 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -26,6 +26,7 @@ obj-$(CONFIG_DRM_PANEL_HYDIS_HV101HD1) +=3D panel-hydis-h= v101hd1.o obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) +=3D panel-ilitek-ili9322.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) +=3D panel-ilitek-ili9341.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9805) +=3D panel-ilitek-ili9805.o +obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9806E_CORE) +=3D panel-ilitek-ili9806e-co= re.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9806E_DSI) +=3D panel-ilitek-ili9806e-dsi= .o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) +=3D panel-ilitek-ili9881c.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9882T) +=3D panel-ilitek-ili9882t.o diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9806e-core.c b/drivers/g= pu/drm/panel/panel-ilitek-ili9806e-core.c new file mode 100644 index 000000000000..c088685d9d85 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9806e-core.c @@ -0,0 +1,129 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Ilitek ILI9806E core driver. + * + * Copyright (c) 2026 Amarula Solutions, Dario Binacchi + */ + +#include + +#include +#include +#include +#include +#include +#include + +#include "panel-ilitek-ili9806e-core.h" + +struct ili9806e { + void *transport; + struct drm_panel panel; + + struct regulator_bulk_data supplies[2]; + struct gpio_desc *reset_gpio; +}; + +static const char * const regulator_names[] =3D { + "vdd", + "vccio", +}; + +void *ili9806e_get_transport(struct drm_panel *panel) +{ + struct ili9806e *ctx =3D container_of(panel, struct ili9806e, panel); + + return ctx->transport; +} +EXPORT_SYMBOL_GPL(ili9806e_get_transport); + +int ili9806e_power_on(struct device *dev) +{ + struct ili9806e *ctx =3D dev_get_drvdata(dev); + int ret; + + gpiod_set_value(ctx->reset_gpio, 1); + + ret =3D regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret) { + dev_err(dev, "regulator bulk enable failed: %d\n", ret); + return ret; + } + + usleep_range(10000, 20000); + gpiod_set_value(ctx->reset_gpio, 0); + usleep_range(10000, 20000); + + return 0; +} +EXPORT_SYMBOL_GPL(ili9806e_power_on); + +int ili9806e_power_off(struct device *dev) +{ + struct ili9806e *ctx =3D dev_get_drvdata(dev); + int ret; + + gpiod_set_value(ctx->reset_gpio, 1); + + ret =3D regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret) + dev_err(dev, "regulator bulk disable failed: %d\n", ret); + + return ret; +} +EXPORT_SYMBOL_GPL(ili9806e_power_off); + +int ili9806e_probe(struct device *dev, void *transport, + const struct drm_panel_funcs *funcs, + int connector_type) +{ + struct ili9806e *ctx; + int i, ret; + + ctx =3D devm_kzalloc(dev, sizeof(struct ili9806e), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + dev_set_drvdata(dev, ctx); + ctx->transport =3D transport; + + for (i =3D 0; i < ARRAY_SIZE(ctx->supplies); i++) + ctx->supplies[i].supply =3D regulator_names[i]; + + ret =3D devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), + ctx->supplies); + if (ret) + return dev_err_probe(dev, ret, "failed to get regulators\n"); + + ctx->reset_gpio =3D devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), + "Failed to get reset-gpios\n"); + + drm_panel_init(&ctx->panel, dev, funcs, connector_type); + + ret =3D drm_panel_of_backlight(&ctx->panel); + if (ret) + return dev_err_probe(dev, ret, "Failed to get backlight\n"); + + ctx->panel.prepare_prev_first =3D true; + drm_panel_add(&ctx->panel); + + return 0; + +} +EXPORT_SYMBOL_GPL(ili9806e_probe); + +void ili9806e_remove(struct device *dev) +{ + struct ili9806e *ctx =3D dev_get_drvdata(dev); + + drm_panel_remove(&ctx->panel); +} +EXPORT_SYMBOL_GPL(ili9806e_remove); + +MODULE_AUTHOR("Dario Binacchi "); +MODULE_AUTHOR("Gunnar Dibbern "); +MODULE_AUTHOR("Michael Walle "); +MODULE_DESCRIPTION("Ilitek ILI9806E Controller Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9806e-core.h b/drivers/g= pu/drm/panel/panel-ilitek-ili9806e-core.h new file mode 100644 index 000000000000..dddece62cf42 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9806e-core.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _PANEL_ILITEK_ILI9806E_CORE_H +#define _PANEL_ILITEK_ILI9806E_CORE_H + +void *ili9806e_get_transport(struct drm_panel *panel); +int ili9806e_power_off(struct device *dev); +int ili9806e_power_on(struct device *dev); + +int ili9806e_probe(struct device *dev, void *transport, + const struct drm_panel_funcs *funcs, + int connector_type); +void ili9806e_remove(struct device *dev); + +#endif /* _PANEL_ILITEK_ILI9806E_CORE_H */ diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9806e-dsi.c b/drivers/gp= u/drm/panel/panel-ilitek-ili9806e-dsi.c index c337c4f1a1c7..ecdbed8d4a3a 100644 --- a/drivers/gpu/drm/panel/panel-ilitek-ili9806e-dsi.c +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9806e-dsi.c @@ -1,15 +1,12 @@ // SPDX-License-Identifier: GPL-2.0 =20 -#include #include #include #include -#include #include #include #include #include -#include =20 #include #include @@ -18,7 +15,9 @@ =20 #include