From: Alistair Francis <alistair@alistair23.me> To: linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Cc: shawnguo@kernel.org, alistair23@gmail.com, robh+dt@kernel.org, linus.walleij@linaro.org, s.hauer@pengutronix.de, andreas@kemnade.info, krzysztof.kozlowski+dt@linaro.org, rydberg@bitmath.org, dmitry.torokhov@gmail.com, Alistair Francis <alistair@alistair23.me> Subject: [PATCH v8 0/4] Add support for the Cypress cyttsp5 Date: Tue, 2 Aug 2022 22:58:23 +1000 [thread overview] Message-ID: <20220802125827.34509-1-alistair@alistair23.me> (raw) This patch series builds on top of [1] and adds support for the cyttsp5 touchscreen controller for the reMarkable 2. I first tried to add an I2C HID device. Although the cyttsp5 has some HID looking aspects it is not HID compatible. Just in trying to probe the device I found: - The HID descriptor has extra padding - The HID descriptor sets the high bytes of the descriptor length - The HID descriptor has extra unrecognised tags - The HID reset command doesn't appear to work I don't think there is a way to use the I2C HID framework with the cyttsp5. For anyone interested you can see the work here [2]. In that branch though I can only obtain a HID descriptor, nothing else works without more core changes. So instead I rebased the series from [1]. Converted to the new yaml DTS documentation, added regulator support and fixed a x/y miscalculation bug. 1: https://lwn.net/ml/linux-kernel/20180703094309.18514-1-mylene.josserand@bootlin.com/ 2: https://github.com/alistair23/linux/commits/rM2-mainline-cyttsp5-hid v8: - Rebase and resend v7: - Fix device tree warnings v6: - Use reg for the button properties v5: - Address review comments from v4 Alistair Francis (4): Input: Add driver for Cypress Generation 5 touchscreen dt-bindings: input: Add Cypress TT2100 touchscreen controller ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen ARM: dts: imx7d-remarkable2: Enable the cyttsp5 .../input/touchscreen/cypress,tt21000.yaml | 101 ++ arch/arm/boot/dts/imx7d-remarkable2.dts | 100 ++ arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/input/touchscreen/Kconfig | 16 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp5.c | 902 ++++++++++++++++++ 6 files changed, 1121 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c -- 2.37.1
WARNING: multiple messages have this Message-ID (diff)
From: Alistair Francis <alistair@alistair23.me> To: linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Cc: shawnguo@kernel.org, alistair23@gmail.com, robh+dt@kernel.org, linus.walleij@linaro.org, s.hauer@pengutronix.de, andreas@kemnade.info, krzysztof.kozlowski+dt@linaro.org, rydberg@bitmath.org, dmitry.torokhov@gmail.com, Alistair Francis <alistair@alistair23.me> Subject: [PATCH v8 0/4] Add support for the Cypress cyttsp5 Date: Tue, 2 Aug 2022 22:58:23 +1000 [thread overview] Message-ID: <20220802125827.34509-1-alistair@alistair23.me> (raw) This patch series builds on top of [1] and adds support for the cyttsp5 touchscreen controller for the reMarkable 2. I first tried to add an I2C HID device. Although the cyttsp5 has some HID looking aspects it is not HID compatible. Just in trying to probe the device I found: - The HID descriptor has extra padding - The HID descriptor sets the high bytes of the descriptor length - The HID descriptor has extra unrecognised tags - The HID reset command doesn't appear to work I don't think there is a way to use the I2C HID framework with the cyttsp5. For anyone interested you can see the work here [2]. In that branch though I can only obtain a HID descriptor, nothing else works without more core changes. So instead I rebased the series from [1]. Converted to the new yaml DTS documentation, added regulator support and fixed a x/y miscalculation bug. 1: https://lwn.net/ml/linux-kernel/20180703094309.18514-1-mylene.josserand@bootlin.com/ 2: https://github.com/alistair23/linux/commits/rM2-mainline-cyttsp5-hid v8: - Rebase and resend v7: - Fix device tree warnings v6: - Use reg for the button properties v5: - Address review comments from v4 Alistair Francis (4): Input: Add driver for Cypress Generation 5 touchscreen dt-bindings: input: Add Cypress TT2100 touchscreen controller ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen ARM: dts: imx7d-remarkable2: Enable the cyttsp5 .../input/touchscreen/cypress,tt21000.yaml | 101 ++ arch/arm/boot/dts/imx7d-remarkable2.dts | 100 ++ arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/input/touchscreen/Kconfig | 16 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp5.c | 902 ++++++++++++++++++ 6 files changed, 1121 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c -- 2.37.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2022-08-02 12:59 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-08-02 12:58 Alistair Francis [this message] 2022-08-02 12:58 ` [PATCH v8 0/4] Add support for the Cypress cyttsp5 Alistair Francis 2022-08-02 12:58 ` [PATCH v8 1/4] Input: Add driver for Cypress Generation 5 touchscreen Alistair Francis 2022-08-02 12:58 ` Alistair Francis 2022-08-03 7:36 ` kernel test robot 2022-08-03 7:36 ` kernel test robot 2022-08-06 3:53 ` kernel test robot 2022-08-06 3:53 ` kernel test robot 2022-08-02 12:58 ` [PATCH v8 2/4] dt-bindings: input: Add Cypress TT2100 touchscreen controller Alistair Francis 2022-08-02 12:58 ` Alistair Francis 2022-08-02 14:01 ` Rob Herring 2022-08-02 14:01 ` Rob Herring 2022-08-02 15:10 ` Rob Herring 2022-08-02 15:10 ` Rob Herring 2022-08-02 12:58 ` [PATCH v8 3/4] ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen Alistair Francis 2022-08-02 12:58 ` Alistair Francis 2022-08-02 12:58 ` [PATCH v8 4/4] ARM: dts: imx7d-remarkable2: Enable the cyttsp5 Alistair Francis 2022-08-02 12:58 ` Alistair Francis
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