Message ID | 20250217-z2-v6-0-c2115d6e5a8f@gmail.com (mailing list archive) |
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Date: Mon, 17 Feb 2025 12:38:00 +0100 Message-Id: <20250217-z2-v6-0-c2115d6e5a8f@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>, Alyssa Rosenzweig <alyssa@rosenzweig.io>, Dmitry Torokhov <dmitry.torokhov@gmail.com>, Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>, Henrik Rydberg <rydberg@bitmath.org> Cc: asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Sasha Finkelstein <fnkl.kernel@gmail.com>, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, Neal Gompa <neal@gompa.dev>, Janne Grunau <j@jannau.net> X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1739792294; l=2640; i=fnkl.kernel@gmail.com; s=20241124; h=from:subject:message-id; bh=EJ5uj+Lo5BxDKmeBIn1FiPC18dDjdUmxMUU2i+B+sco=; b=vwT0A6gkRH+Zl2/0CowLCLL+90Jxenq829Gs/+O0oAU3C+lsBUwoT/vLs+g93OYXbLJ5rOLz4 n4dwit1+eC7Cb9YjC7CeL9B5B7deDtzj06OzMD+nxl1PYCFhcQpHCvv X-Developer-Key: i=fnkl.kernel@gmail.com; a=ed25519; pk=aSkp1PdZ+eF4jpMO6oLvz/YfT5XkBUneWwyhQrOgmsU= X-Endpoint-Received: by B4 Relay for fnkl.kernel@gmail.com/20241124 with auth_id=283 X-Original-From: Sasha Finkelstein <fnkl.kernel@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250217_113820_014063_D770D230 X-CRM114-Status: GOOD ( 12.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Reply-To: fnkl.kernel@gmail.com Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org |
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Driver for Apple Z2 touchscreens.
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Hi. This series adds support for Apple touchscreens using the Z2 protocol. Those are used as the primary touchscreen on mobile Apple devices, and for the touchbar on laptops using the M-series chips. (T1/T2 laptops have a coprocessor in charge of speaking Z2 to the touchbar). Originally sent as a RFC at https://lore.kernel.org/all/20230223-z2-for-ml-v1-0-028f2b85dc15@gmail.com/ The changes since then mostly address the review feedback, but also add another machine that has this specific controller. Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com> --- Changes in v6: - Went back to build_cal_blob returning an allocated buffer, other fixes. - Link to v5: https://lore.kernel.org/r/20250118-z2-v5-0-6d38b2582169@gmail.com Changes in v5: - Added missing \ns, removed 4kb-ish of wasted ram - Link to v4: https://lore.kernel.org/r/20250115-z2-v4-0-d7361ab16ba0@gmail.com Changes in v4: - Dropped another allocation, other fixes. - Link to v3: https://lore.kernel.org/r/20250112-z2-v3-0-5c0e555d3df1@gmail.com Changes in v3: - Tx/Rx buffers used in interrupt handler are now allocated in probe and reused - Other various style fixes - Link to v2: https://lore.kernel.org/r/20241128-z2-v2-0-76cc59bbf117@gmail.com Changes in v2: - In a separate patch, fixed an issue that prevented the SPI controller from using GPIO CS, and as such, moved the hardware quirk to there - Went back to uploading the firmware in probe() instad of open() - Other changes addressing the review feedback - Link to v1: https://lore.kernel.org/r/20241126-z2-v1-0-c43c4cc6200d@gmail.com --- Sasha Finkelstein (4): dt-bindings: input: touchscreen: Add Z2 controller input: apple_z2: Add a driver for Apple Z2 touchscreens arm64: dts: apple: Add touchbar digitizer nodes MAINTAINERS: Add entries for Apple Z2 touchscreen driver .../input/touchscreen/apple,z2-multitouch.yaml | 70 +++ MAINTAINERS | 2 + arch/arm64/boot/dts/apple/t8103-j293.dts | 27 ++ arch/arm64/boot/dts/apple/t8103.dtsi | 19 + arch/arm64/boot/dts/apple/t8112-j493.dts | 23 + arch/arm64/boot/dts/apple/t8112.dtsi | 14 + drivers/input/touchscreen/Kconfig | 13 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/apple_z2.c | 473 +++++++++++++++++++++ 9 files changed, 642 insertions(+) --- base-commit: b62cef9a5c673f1b8083159f5dc03c1c5daced2f change-id: 20241124-z2-c012b528ea0d