cregit-Linux how code gets into the kernel

Release 4.11 drivers/input/mouse/lifebook.c

/*
 * Fujitsu B-series Lifebook PS/2 TouchScreen driver
 *
 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
 * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
 *
 * TouchScreen detection, absolute mode setting and packet layout is taken from
 * Harald Hoyer's description of the device.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 */

#include <linux/input.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <linux/dmi.h>
#include <linux/slab.h>

#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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov1789.47%250.00%
Axel Lin15.26%125.00%
Jeff Garzik15.26%125.00%
Total19100.00%4100.00%

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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov1789.47%250.00%
Axel Lin15.26%125.00%
Jeff Garzik15.26%125.00%
Total19100.00%4100.00%

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); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov15100.00%1100.00%
Total15100.00%1100.00%


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; unsigned char *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) { input_report_rel(dev2, REL_X, ((packet[0] & 0x10) ? packet[1] - 256 : packet[1])); input_report_rel(dev2, REL_Y, -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2])); } input_report_key(dev2, BTN_LEFT, packet[0] & 0x01); input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02); input_sync(dev2); } return PSMOUSE_FULL_PACKET; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov40877.57%685.71%
Kenan Esau11822.43%114.29%
Total526100.00%7100.00%


static int lifebook_absolute_mode(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param; if (psmouse_reset(psmouse)) return -1; /* * 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, &param, PSMOUSE_CMD_SETRES); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kenan Esau5086.21%120.00%
Dmitry Torokhov813.79%480.00%
Total58100.00%5100.00%


static void lifebook_relative_mode(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param = 0x06; ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov37100.00%1100.00%
Total37100.00%1100.00%


static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution) { static const unsigned char params[] = { 0, 1, 2, 2, 3 }; unsigned char p; if (resolution == 0 || resolution > 400) resolution = 400; p = params[resolution / 100]; ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); psmouse->resolution = 50 << p; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov6579.27%150.00%
Helge Deller1720.73%150.00%
Total82100.00%2100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Andres Salomon2346.94%133.33%
Kenan Esau1632.65%133.33%
Dmitry Torokhov1020.41%133.33%
Total49100.00%3100.00%


int lifebook_detect(struct psmouse *psmouse, bool set_properties) { if (!lifebook_present) return -1; if (desired_serio_phys && strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys)) return -1; if (set_properties) { psmouse->vendor = "Fujitsu"; psmouse->name = "Lifebook TouchScreen"; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kenan Esau3453.12%120.00%
Dmitry Torokhov3046.88%480.00%
Total64100.00%5100.00%


static int lifebook_create_relative_device(struct psmouse *psmouse) { struct input_dev *dev2; struct lifebook_data *priv; int error = -ENOMEM; priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL); dev2 = input_allocate_device(); if (!priv || !dev2) goto err_out; priv->dev2 = dev2; snprintf(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; dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | BIT_MASK(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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov20383.20%457.14%
Kenan Esau3213.11%114.29%
Jiri Slaby83.28%114.29%
Pali Rohár10.41%114.29%
Total244100.00%7100.00%


int lifebook_init(struct psmouse *psmouse) { struct input_dev *dev1 = psmouse->dev; int max_coord = lifebook_use_6byte_proto ? 4096 : 1024; if (lifebook_absolute_mode(psmouse)) return -1; dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY); dev1->relbit[0] = 0; dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0; dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(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) { if (lifebook_create_relative_device(psmouse)) { lifebook_relative_mode(psmouse); return -1; } } 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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov11660.73%777.78%
Kenan Esau7137.17%111.11%
Jiri Slaby42.09%111.11%
Total191100.00%9100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov105766.77%1854.55%
Kenan Esau41025.90%26.06%
Andres Salomon231.45%13.03%
Helge Deller171.07%13.03%
Jon Dodgson150.95%13.03%
Andrew Morton140.88%13.03%
Daniele Gozzi120.76%13.03%
Greg Chandler120.76%13.03%
Jiri Slaby120.76%13.03%
Jeff Garzik30.19%13.03%
Tejun Heo30.19%13.03%
Axel Lin20.13%13.03%
Abner Holsinger10.06%13.03%
Pali Rohár10.06%13.03%
Sachin Kamat10.06%13.03%
Total1583100.00%33100.00%
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