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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/input/touchscreen/dynapro.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'drivers/input/touchscreen/dynapro.c')
-rw-r--r--drivers/input/touchscreen/dynapro.c185
1 files changed, 185 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/dynapro.c b/drivers/input/touchscreen/dynapro.c
new file mode 100644
index 000000000..943ba8c2f
--- /dev/null
+++ b/drivers/input/touchscreen/dynapro.c
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Dynapro serial touchscreen driver
+ *
+ * Copyright (c) 2009 Tias Guns
+ * Based on the inexio driver (c) Vojtech Pavlik and Dan Streetman and
+ * Richard Lemon
+ */
+
+
+/*
+ * 2009/09/19 Tias Guns <tias@ulyssis.org>
+ * Copied inexio.c and edited for Dynapro protocol (from retired Xorg module)
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+
+#define DRIVER_DESC "Dynapro serial touchscreen driver"
+
+MODULE_AUTHOR("Tias Guns <tias@ulyssis.org>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Definitions & global arrays.
+ */
+
+#define DYNAPRO_FORMAT_TOUCH_BIT 0x40
+#define DYNAPRO_FORMAT_LENGTH 3
+#define DYNAPRO_RESPONSE_BEGIN_BYTE 0x80
+
+#define DYNAPRO_MIN_XC 0
+#define DYNAPRO_MAX_XC 0x3ff
+#define DYNAPRO_MIN_YC 0
+#define DYNAPRO_MAX_YC 0x3ff
+
+#define DYNAPRO_GET_XC(data) (data[1] | ((data[0] & 0x38) << 4))
+#define DYNAPRO_GET_YC(data) (data[2] | ((data[0] & 0x07) << 7))
+#define DYNAPRO_GET_TOUCHED(data) (DYNAPRO_FORMAT_TOUCH_BIT & data[0])
+
+/*
+ * Per-touchscreen data.
+ */
+
+struct dynapro {
+ struct input_dev *dev;
+ struct serio *serio;
+ int idx;
+ unsigned char data[DYNAPRO_FORMAT_LENGTH];
+ char phys[32];
+};
+
+static void dynapro_process_data(struct dynapro *pdynapro)
+{
+ struct input_dev *dev = pdynapro->dev;
+
+ if (DYNAPRO_FORMAT_LENGTH == ++pdynapro->idx) {
+ input_report_abs(dev, ABS_X, DYNAPRO_GET_XC(pdynapro->data));
+ input_report_abs(dev, ABS_Y, DYNAPRO_GET_YC(pdynapro->data));
+ input_report_key(dev, BTN_TOUCH,
+ DYNAPRO_GET_TOUCHED(pdynapro->data));
+ input_sync(dev);
+
+ pdynapro->idx = 0;
+ }
+}
+
+static irqreturn_t dynapro_interrupt(struct serio *serio,
+ unsigned char data, unsigned int flags)
+{
+ struct dynapro *pdynapro = serio_get_drvdata(serio);
+
+ pdynapro->data[pdynapro->idx] = data;
+
+ if (DYNAPRO_RESPONSE_BEGIN_BYTE & pdynapro->data[0])
+ dynapro_process_data(pdynapro);
+ else
+ dev_dbg(&serio->dev, "unknown/unsynchronized data: %x\n",
+ pdynapro->data[0]);
+
+ return IRQ_HANDLED;
+}
+
+static void dynapro_disconnect(struct serio *serio)
+{
+ struct dynapro *pdynapro = serio_get_drvdata(serio);
+
+ input_get_device(pdynapro->dev);
+ input_unregister_device(pdynapro->dev);
+ serio_close(serio);
+ serio_set_drvdata(serio, NULL);
+ input_put_device(pdynapro->dev);
+ kfree(pdynapro);
+}
+
+/*
+ * dynapro_connect() is the routine that is called when someone adds a
+ * new serio device that supports dynapro protocol and registers it as
+ * an input device. This is usually accomplished using inputattach.
+ */
+
+static int dynapro_connect(struct serio *serio, struct serio_driver *drv)
+{
+ struct dynapro *pdynapro;
+ struct input_dev *input_dev;
+ int err;
+
+ pdynapro = kzalloc_obj(*pdynapro);
+ input_dev = input_allocate_device();
+ if (!pdynapro || !input_dev) {
+ err = -ENOMEM;
+ goto fail1;
+ }
+
+ pdynapro->serio = serio;
+ pdynapro->dev = input_dev;
+ scnprintf(pdynapro->phys, sizeof(pdynapro->phys),
+ "%s/input0", serio->phys);
+
+ input_dev->name = "Dynapro Serial TouchScreen";
+ input_dev->phys = pdynapro->phys;
+ input_dev->id.bustype = BUS_RS232;
+ input_dev->id.vendor = SERIO_DYNAPRO;
+ input_dev->id.product = 0;
+ input_dev->id.version = 0x0001;
+ input_dev->dev.parent = &serio->dev;
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+ input_set_abs_params(pdynapro->dev, ABS_X,
+ DYNAPRO_MIN_XC, DYNAPRO_MAX_XC, 0, 0);
+ input_set_abs_params(pdynapro->dev, ABS_Y,
+ DYNAPRO_MIN_YC, DYNAPRO_MAX_YC, 0, 0);
+
+ serio_set_drvdata(serio, pdynapro);
+
+ err = serio_open(serio, drv);
+ if (err)
+ goto fail2;
+
+ err = input_register_device(pdynapro->dev);
+ if (err)
+ goto fail3;
+
+ return 0;
+
+ fail3: serio_close(serio);
+ fail2: serio_set_drvdata(serio, NULL);
+ fail1: input_free_device(input_dev);
+ kfree(pdynapro);
+ return err;
+}
+
+/*
+ * The serio driver structure.
+ */
+
+static const struct serio_device_id dynapro_serio_ids[] = {
+ {
+ .type = SERIO_RS232,
+ .proto = SERIO_DYNAPRO,
+ .id = SERIO_ANY,
+ .extra = SERIO_ANY,
+ },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, dynapro_serio_ids);
+
+static struct serio_driver dynapro_drv = {
+ .driver = {
+ .name = "dynapro",
+ },
+ .description = DRIVER_DESC,
+ .id_table = dynapro_serio_ids,
+ .interrupt = dynapro_interrupt,
+ .connect = dynapro_connect,
+ .disconnect = dynapro_disconnect,
+};
+
+module_serio_driver(dynapro_drv);