From: Alistair Francis <alistair@alistair23.me> To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mylene.josserand@free-electrons.com, linus.walleij@linaro.org, andreas@kemnade.info, rydberg@bitmath.org, dmitry.torokhov@gmail.com, robh+dt@kernel.org, alistair23@gmail.com, Alistair Francis <alistair@alistair23.me> Subject: [PATCH v2 0/4] Add support for the Cypress cyttsp5 Date: Wed, 3 Nov 2021 21:48:26 +1000 [thread overview] Message-ID: <20211103114830.62711-1-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 Alistair Francis (2): ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen ARM: dts: imx7d: remarkable2: Enable the cyttsp5 Mylène Josserand (2): Input: Add driver for Cypress Generation 5 touchscreen Documentation: DT: bindings: input: Add documentation for cyttsp5 .../input/touchscreen/cypress,tt21000.yaml | 92 ++ arch/arm/boot/dts/imx7d-remarkable2.dts | 89 ++ arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/input/touchscreen/Kconfig | 14 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp5.c | 1135 +++++++++++++++++ 6 files changed, 1332 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c -- 2.31.1
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From: Alistair Francis <alistair@alistair23.me> To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mylene.josserand@free-electrons.com, linus.walleij@linaro.org, andreas@kemnade.info, rydberg@bitmath.org, dmitry.torokhov@gmail.com, robh+dt@kernel.org, alistair23@gmail.com, Alistair Francis <alistair@alistair23.me> Subject: [PATCH v2 0/4] Add support for the Cypress cyttsp5 Date: Wed, 3 Nov 2021 21:48:26 +1000 [thread overview] Message-ID: <20211103114830.62711-1-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 Alistair Francis (2): ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen ARM: dts: imx7d: remarkable2: Enable the cyttsp5 Mylène Josserand (2): Input: Add driver for Cypress Generation 5 touchscreen Documentation: DT: bindings: input: Add documentation for cyttsp5 .../input/touchscreen/cypress,tt21000.yaml | 92 ++ arch/arm/boot/dts/imx7d-remarkable2.dts | 89 ++ arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/input/touchscreen/Kconfig | 14 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp5.c | 1135 +++++++++++++++++ 6 files changed, 1332 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c -- 2.31.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-11-03 11:48 UTC|newest] Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-03 11:48 Alistair Francis [this message] 2021-11-03 11:48 ` [PATCH v2 0/4] Add support for the Cypress cyttsp5 Alistair Francis 2021-11-03 11:48 ` [PATCH v2 1/4] Input: Add driver for Cypress Generation 5 touchscreen Alistair Francis 2021-11-03 11:48 ` Alistair Francis 2021-11-05 15:01 ` Andreas Kemnade 2021-11-05 15:01 ` Andreas Kemnade 2021-11-06 6:47 ` Dmitry Torokhov 2021-11-06 6:47 ` Dmitry Torokhov 2021-12-01 12:27 ` Alistair Francis 2021-12-01 12:27 ` Alistair Francis 2021-12-13 5:45 ` Dmitry Torokhov 2021-12-13 5:45 ` Dmitry Torokhov 2021-12-13 18:49 ` Andreas Kemnade 2021-12-13 18:49 ` Andreas Kemnade 2021-12-18 22:18 ` Andreas Kemnade 2021-12-18 22:18 ` Andreas Kemnade 2021-12-21 23:28 ` Alistair Francis 2021-12-21 23:28 ` Alistair Francis 2021-12-23 13:47 ` Andy Shevchenko 2021-12-23 13:47 ` Andy Shevchenko 2021-11-03 11:48 ` [PATCH v2 2/4] Documentation: DT: bindings: input: Add documentation for cyttsp5 Alistair Francis 2021-11-03 11:48 ` Alistair Francis 2021-11-03 23:07 ` Rob Herring 2021-11-03 23:07 ` Rob Herring 2021-11-05 14:21 ` Andreas Kemnade 2021-11-05 14:21 ` Andreas Kemnade 2021-11-10 12:59 ` Alistair Francis 2021-11-10 12:59 ` Alistair Francis 2021-11-10 17:36 ` Andreas Kemnade 2021-11-10 17:36 ` Andreas Kemnade 2021-11-11 15:16 ` Linus Walleij 2021-11-11 15:16 ` Linus Walleij 2021-11-18 12:51 ` Alistair Francis 2021-11-18 12:51 ` Alistair Francis 2021-11-03 11:48 ` [PATCH v2 3/4] ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen Alistair Francis 2021-11-03 11:48 ` Alistair Francis 2021-11-03 11:48 ` [PATCH v2 4/4] ARM: dts: imx7d: remarkable2: Enable the cyttsp5 Alistair Francis 2021-11-03 11:48 ` Alistair Francis 2021-11-06 2:25 ` Dmitry Torokhov 2021-11-06 2:25 ` Dmitry Torokhov 2021-11-05 14:52 ` [PATCH v2 0/4] Add support for the Cypress cyttsp5 Andreas Kemnade 2021-11-05 14:52 ` Andreas Kemnade 2021-11-25 9:44 ` Alistair Francis 2021-11-25 9:44 ` Alistair Francis
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