From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrzej Pietrasiewicz Subject: [PATCH v3 00/22] Associate ddc adapters with connectors Date: Fri, 28 Jun 2019 18:01:14 +0200 Message-ID: References: <3fb19371-db7d-f9dc-31a7-1ccd126f6784@collabora.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <3fb19371-db7d-f9dc-31a7-1ccd126f6784-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+glpar-linux-rockchip=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Cc: "Y.C. Chen" , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Sam Ravnborg , Neil Armstrong , Maxime Ripard , Douglas Anderson , Andrzej Hajda , Thierry Reding , Laurent Pinchart , Benjamin Gaignard , kernel-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org, Fabio Estevam , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , "David (ChunMing) Zhou" , linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Joonyoung Shim , linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Vincent Abriou , Rob Clark , Krzysztof Kozlowski , Jonathan Hunter David List-Id: linux-rockchip.vger.kernel.org It is difficult for a user to know which of the i2c adapters is for which drm connector. This series addresses this problem. The idea is to have a symbolic link in connector's sysfs directory, e.g.: ls -l /sys/class/drm/card0-HDMI-A-1/ddc lrwxrwxrwx 1 root root 0 Jun 24 10:42 /sys/class/drm/card0-HDMI-A-1/ddc \ -> ../../../../soc/13880000.i2c/i2c-2 The user then knows that their card0-HDMI-A-1 uses i2c-2 and can e.g. run ddcutil: ddcutil -b 2 getvcp 0x10 VCP code 0x10 (Brightness ): current value = 90, max value = 100 The first patch in the series adds struct i2c_adapter pointer to struct drm_connector. If the field is used by a particular driver, then an appropriate symbolic link is created by the generic code, which is also added by this patch. The second patch is an example of how to convert a driver to this new scheme. v1..v2: - used fixed name "ddc" for the symbolic link in order to make it easy for userspace to find the i2c adapter v2..v3: - converted as many drivers as possible. PATCHES 3/22-22/22 SHOULD BE CONSIDERED RFC! Andrzej Pietrasiewicz (22): drm: Include ddc adapter pointer in struct drm_connector drm/exynos: Provide ddc symlink in connector's sysfs drm: rockchip: Provide ddc symlink in rk3066_hdmi sysfs directory drm: rockchip: Provide ddc symlink in inno_hdmi sysfs directory drm/msm/hdmi: Provide ddc symlink in hdmi connector sysfs directory drm/sun4i: hdmi: Provide ddc symlink in sun4i hdmi connector sysfs directory drm/mediatek: Provide ddc symlink in hdmi connector sysfs directory drm/tegra: Provide ddc symlink in output connector sysfs directory drm/imx: imx-ldb: Provide ddc symlink in connector's sysfs drm/imx: imx-tve: Provide ddc symlink in connector's sysfs drm/vc4: Provide ddc symlink in connector sysfs directory drm: zte: Provide ddc symlink in hdmi connector sysfs directory drm: zte: Provide ddc symlink in vga connector sysfs directory drm/tilcdc: Provide ddc symlink in connector sysfs directory drm: sti: Provide ddc symlink in hdmi connector sysfs directory drm/mgag200: Provide ddc symlink in connector sysfs directory drm/ast: Provide ddc symlink in connector sysfs directory drm/bridge: dumb-vga-dac: Provide ddc symlink in connector sysfs directory drm/bridge: dw-hdmi: Provide ddc symlink in connector sysfs directory drm/bridge: ti-tfp410: Provide ddc symlink in connector sysfs directory drm/amdgpu: Provide ddc symlink in connector sysfs directory drm/radeon: Provide ddc symlink in connector sysfs directory .../gpu/drm/amd/amdgpu/amdgpu_connectors.c | 70 +++++++++++----- drivers/gpu/drm/ast/ast_mode.c | 1 + drivers/gpu/drm/bridge/dumb-vga-dac.c | 19 ++--- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 40 ++++----- drivers/gpu/drm/bridge/ti-tfp410.c | 19 ++--- drivers/gpu/drm/drm_sysfs.c | 7 ++ drivers/gpu/drm/exynos/exynos_hdmi.c | 11 ++- drivers/gpu/drm/imx/imx-ldb.c | 13 ++- drivers/gpu/drm/imx/imx-tve.c | 8 +- drivers/gpu/drm/mediatek/mtk_hdmi.c | 9 +- drivers/gpu/drm/mgag200/mgag200_mode.c | 1 + drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 1 + drivers/gpu/drm/radeon/radeon_connectors.c | 82 ++++++++++++++----- drivers/gpu/drm/rockchip/inno_hdmi.c | 17 ++-- drivers/gpu/drm/rockchip/rk3066_hdmi.c | 17 ++-- drivers/gpu/drm/sti/sti_hdmi.c | 1 + drivers/gpu/drm/sun4i/sun4i_hdmi.h | 1 - drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 14 ++-- drivers/gpu/drm/tegra/drm.h | 1 - drivers/gpu/drm/tegra/output.c | 12 +-- drivers/gpu/drm/tegra/sor.c | 6 +- drivers/gpu/drm/tilcdc/tilcdc_tfp410.c | 1 + drivers/gpu/drm/vc4/vc4_hdmi.c | 16 ++-- drivers/gpu/drm/zte/zx_hdmi.c | 25 ++---- drivers/gpu/drm/zte/zx_vga.c | 25 ++---- include/drm/drm_connector.h | 11 +++ 26 files changed, 252 insertions(+), 176 deletions(-) -- 2.17.1