From 4352b8aee98005853aa63f57d6377282de17a33f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 23 Aug 2026 13:28:57 -0700 Subject: Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux Pull I3C updates from Alexandre Belloni: "A new driver this cycle, for the AMD AXI I3C controller. There are also new features such as IBI wakeup support, SETAASA device discovery and ACPI support for the the DAA methods, meaning we can now communicate with the SPD devices on DDR5 modules. New driver: - AMD AXI I3C master controller Subsystem: - I3C Common Command Code (CCC) handling improvements, especially around GET CCCs - SETAASA device discovery support - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as well as I2C devices on I3C bus - IBI-based wakeup support Drivers: - dw: SETAASA support - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C controller support, PIO queue management support for HCI v1.2 - renesas: improve suspend to RAM support, add runtime PM support" * tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits) i3c: dw: reduce do_daa time if there's no client i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2 i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode i3c: dw: rename "pclk" to "apb" to match dt-binding i3c: dw: make struct dw_i3c_cmd smaller i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding i3c: renesas: Don't register devices when ENTDAA times out i3c: master: dw-i3c-master: fix OD timing for first broadcast i3c: mipi-i3c-hci: Advertise IBI wakeup capability i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev() i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI i3c: master: Reject IBI requests from non-IBI-capable devices i3c: master: Add helper to query bus wakeup requirements i3c: master: Report wakeup events for IBIs i3c: master: Support IBI-based wakeup capability i3c: master: Fix potential UAF in i3c_device_match() i3c: master: Fix potential UAF in i3c_device_uevent() i3c: Make dev->desc locking assumptions explicit i3c: master: Fix use-after-free of master->this ... --- drivers/input/mouse/lifebook.c | 353 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 353 insertions(+) create mode 100644 drivers/input/mouse/lifebook.c (limited to 'drivers/input/mouse/lifebook.c') diff --git a/drivers/input/mouse/lifebook.c b/drivers/input/mouse/lifebook.c new file mode 100644 index 000000000..ef11b7b19 --- /dev/null +++ b/drivers/input/mouse/lifebook.c @@ -0,0 +1,353 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Fujitsu B-series Lifebook PS/2 TouchScreen driver + * + * Copyright (c) 2005 Vojtech Pavlik + * Copyright (c) 2005 Kenan Esau + * + * TouchScreen detection, absolute mode setting and packet layout is taken from + * Harald Hoyer's description of the device. + */ + +#include +#include +#include +#include +#include +#include + +#include "psmouse.h" +#include "lifebook.h" + +struct lifebook_data { + struct input_dev *dev2; /* Relative device */ + char phys[32]; +}; + +static bool lifebook_present; + +static const char *desired_serio_phys; + +static int lifebook_limit_serio3(const struct dmi_system_id *d) +{ + desired_serio_phys = "isa0060/serio3"; + return 1; +} + +static bool lifebook_use_6byte_proto; + +static int lifebook_set_6byte_proto(const struct dmi_system_id *d) +{ + lifebook_use_6byte_proto = true; + return 1; +} + +static const struct dmi_system_id lifebook_dmi_table[] __initconst = { + { + /* FLORA-ie 55mi */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"), + }, + }, + { + /* LifeBook B */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"), + }, + }, + { + /* LifeBook B */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"), + }, + }, + { + /* Lifebook B */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"), + }, + }, + { + /* Lifebook B-2130 */ + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"), + }, + }, + { + /* Lifebook B213x/B2150 */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"), + }, + }, + { + /* Zephyr */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"), + }, + }, + { + /* Panasonic CF-18 */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"), + }, + .callback = lifebook_limit_serio3, + }, + { + /* Panasonic CF-28 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), + DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"), + }, + .callback = lifebook_set_6byte_proto, + }, + { + /* Panasonic CF-29 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), + DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"), + }, + .callback = lifebook_set_6byte_proto, + }, + { + /* Panasonic CF-72 */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"), + }, + .callback = lifebook_set_6byte_proto, + }, + { + /* Lifebook B142 */ + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"), + }, + }, + { } +}; + +void __init lifebook_module_init(void) +{ + lifebook_present = dmi_check_system(lifebook_dmi_table); +} + +static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse) +{ + struct lifebook_data *priv = psmouse->private; + struct input_dev *dev1 = psmouse->dev; + struct input_dev *dev2 = priv ? priv->dev2 : NULL; + u8 *packet = psmouse->packet; + bool relative_packet = packet[0] & 0x08; + + if (relative_packet || !lifebook_use_6byte_proto) { + if (psmouse->pktcnt != 3) + return PSMOUSE_GOOD_DATA; + } else { + switch (psmouse->pktcnt) { + case 1: + return (packet[0] & 0xf8) == 0x00 ? + PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; + case 2: + return PSMOUSE_GOOD_DATA; + case 3: + return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ? + PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; + case 4: + return (packet[3] & 0xf8) == 0xc0 ? + PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; + case 5: + return (packet[4] & 0xc0) == (packet[2] & 0xc0) ? + PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; + case 6: + if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0)) + return PSMOUSE_BAD_DATA; + if ((packet[5] & 0xc0) != (packet[1] & 0xc0)) + return PSMOUSE_BAD_DATA; + break; /* report data */ + } + } + + if (relative_packet) { + if (!dev2) + psmouse_warn(psmouse, + "got relative packet but no relative device set up\n"); + } else { + if (lifebook_use_6byte_proto) { + input_report_abs(dev1, ABS_X, + ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f)); + input_report_abs(dev1, ABS_Y, + 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f))); + } else { + input_report_abs(dev1, ABS_X, + (packet[1] | ((packet[0] & 0x30) << 4))); + input_report_abs(dev1, ABS_Y, + 1024 - (packet[2] | ((packet[0] & 0xC0) << 2))); + } + input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04); + input_sync(dev1); + } + + if (dev2) { + if (relative_packet) + psmouse_report_standard_motion(dev2, packet); + + psmouse_report_standard_buttons(dev2, packet[0]); + input_sync(dev2); + } + + return PSMOUSE_FULL_PACKET; +} + +static int lifebook_absolute_mode(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + u8 param; + int error; + + error = psmouse_reset(psmouse); + if (error) + return error; + + /* + * Enable absolute output -- ps2_command fails always but if + * you leave this call out the touchscreen will never send + * absolute coordinates + */ + param = lifebook_use_6byte_proto ? 0x08 : 0x07; + ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); + + return 0; +} + +static void lifebook_relative_mode(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + u8 param = 0x06; + + ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); +} + +static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution) +{ + static const u8 params[] = { 0, 1, 2, 2, 3 }; + u8 p; + + if (resolution == 0 || resolution > 400) + resolution = 400; + + p = params[resolution / 100]; + ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); + psmouse->resolution = 50 << p; +} + +static void lifebook_disconnect(struct psmouse *psmouse) +{ + struct lifebook_data *priv = psmouse->private; + + psmouse_reset(psmouse); + if (priv) { + input_unregister_device(priv->dev2); + kfree(priv); + } + psmouse->private = NULL; +} + +int lifebook_detect(struct psmouse *psmouse, bool set_properties) +{ + if (!lifebook_present) + return -ENXIO; + + if (desired_serio_phys && + strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys)) + return -ENXIO; + + if (set_properties) { + psmouse->vendor = "Fujitsu"; + psmouse->name = "Lifebook TouchScreen"; + } + + return 0; +} + +static int lifebook_create_relative_device(struct psmouse *psmouse) +{ + struct input_dev *dev2; + struct lifebook_data *priv; + int error = -ENOMEM; + + priv = kzalloc_obj(*priv); + dev2 = input_allocate_device(); + if (!priv || !dev2) + goto err_out; + + priv->dev2 = dev2; + scnprintf(priv->phys, sizeof(priv->phys), + "%s/input1", psmouse->ps2dev.serio->phys); + + dev2->phys = priv->phys; + dev2->name = "LBPS/2 Fujitsu Lifebook Touchpad"; + dev2->id.bustype = BUS_I8042; + dev2->id.vendor = 0x0002; + dev2->id.product = PSMOUSE_LIFEBOOK; + dev2->id.version = 0x0000; + dev2->dev.parent = &psmouse->ps2dev.serio->dev; + + input_set_capability(dev2, EV_REL, REL_X); + input_set_capability(dev2, EV_REL, REL_Y); + input_set_capability(dev2, EV_KEY, BTN_LEFT); + input_set_capability(dev2, EV_KEY, BTN_RIGHT); + + error = input_register_device(priv->dev2); + if (error) + goto err_out; + + psmouse->private = priv; + return 0; + + err_out: + input_free_device(dev2); + kfree(priv); + return error; +} + +int lifebook_init(struct psmouse *psmouse) +{ + struct input_dev *dev1 = psmouse->dev; + int max_coord = lifebook_use_6byte_proto ? 4096 : 1024; + int error; + + error = lifebook_absolute_mode(psmouse); + if (error) + return error; + + /* Clear default capabilities */ + bitmap_zero(dev1->evbit, EV_CNT); + bitmap_zero(dev1->relbit, REL_CNT); + bitmap_zero(dev1->keybit, KEY_CNT); + + input_set_capability(dev1, EV_KEY, BTN_TOUCH); + input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0); + input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0); + + if (!desired_serio_phys) { + error = lifebook_create_relative_device(psmouse); + if (error) { + lifebook_relative_mode(psmouse); + return error; + } + } + + psmouse->protocol_handler = lifebook_process_byte; + psmouse->set_resolution = lifebook_set_resolution; + psmouse->disconnect = lifebook_disconnect; + psmouse->reconnect = lifebook_absolute_mode; + + psmouse->model = lifebook_use_6byte_proto ? 6 : 3; + + /* + * Use packet size = 3 even when using 6-byte protocol because + * that's what POLL will return on Lifebooks (according to spec). + */ + psmouse->pktsize = 3; + + return 0; +} + -- cgit v1.3.1