diff options
Diffstat (limited to 'drivers/input/mouse/lifebook.c')
| -rw-r--r-- | drivers/input/mouse/lifebook.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/input/mouse/lifebook.c b/drivers/input/mouse/lifebook.c new file mode 100644 index 0000000..bd9df9b --- /dev/null +++ b/drivers/input/mouse/lifebook.c @@ -0,0 +1,134 @@ +/* + * 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 "psmouse.h" +#include "lifebook.h" + +static struct dmi_system_id lifebook_dmi_table[] = { + { + .ident = "Lifebook B", + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"), + }, + }, + { } +}; + + +static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse, struct pt_regs *regs) +{ + unsigned char *packet = psmouse->packet; + struct input_dev *dev = &psmouse->dev; + + if (psmouse->pktcnt != 3) + return PSMOUSE_GOOD_DATA; + + input_regs(dev, regs); + + /* calculate X and Y */ + if ((packet[0] & 0x08) == 0x00) { + input_report_abs(dev, ABS_X, + (packet[1] | ((packet[0] & 0x30) << 4))); + input_report_abs(dev, ABS_Y, + 1024 - (packet[2] | ((packet[0] & 0xC0) << 2))); + } else { + input_report_rel(dev, REL_X, + ((packet[0] & 0x10) ? packet[1] - 256 : packet[1])); + input_report_rel(dev, REL_Y, + -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2])); + } + + input_report_key(dev, BTN_LEFT, packet[0] & 0x01); + input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); + input_report_key(dev, BTN_TOUCH, packet[0] & 0x04); + + input_sync(dev); + + return PSMOUSE_FULL_PACKET; +} + +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 touchsreen will never send + absolute coordinates + */ + param = 0x07; + ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); + + return 0; +} + +static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution) +{ + unsigned char params[] = { 0, 1, 2, 2, 3 }; + + if (resolution == 0 || resolution > 400) + resolution = 400; + + ps2_command(&psmouse->ps2dev, ¶ms[resolution / 100], PSMOUSE_CMD_SETRES); + psmouse->resolution = 50 << params[resolution / 100]; +} + +static void lifebook_disconnect(struct psmouse *psmouse) +{ + psmouse_reset(psmouse); +} + +int lifebook_detect(struct psmouse *psmouse, int set_properties) +{ + if (!dmi_check_system(lifebook_dmi_table)) + return -1; + + if (set_properties) { + psmouse->vendor = "Fujitsu"; + psmouse->name = "Lifebook TouchScreen"; + } + + return 0; +} + +int lifebook_init(struct psmouse *psmouse) +{ + if (lifebook_absolute_mode(psmouse)) + return -1; + + psmouse->dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL); + psmouse->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); + psmouse->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH); + psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y); + input_set_abs_params(&psmouse->dev, ABS_X, 0, 1024, 0, 0); + input_set_abs_params(&psmouse->dev, ABS_Y, 0, 1024, 0, 0); + + psmouse->protocol_handler = lifebook_process_byte; + psmouse->set_resolution = lifebook_set_resolution; + psmouse->disconnect = lifebook_disconnect; + psmouse->reconnect = lifebook_absolute_mode; + psmouse->pktsize = 3; + + return 0; +} + |
