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/*
* Lowlevel hardware access for the
* Razer Krait mouse
*
* Important notice:
* This hardware driver is based on reverse engineering, only.
*
* Copyright (C) 2007-2011 Michael Buesch <m@bues.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "hw_krait.h"
#include "razer_private.h"
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
struct krait_private {
struct razer_mouse *m;
struct razer_mouse_dpimapping *cur_dpimapping;
struct razer_mouse_profile profile;
struct razer_mouse_dpimapping dpimapping[2];
bool commit_pending;
};
static int krait_usb_write(struct krait_private *priv,
int request, int command,
void *buf, size_t size)
{
int err;
err = libusb_control_transfer(
priv->m->usb_ctx->h,
LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_CLASS |
LIBUSB_RECIPIENT_INTERFACE,
request, command, 0,
buf, size,
RAZER_USB_TIMEOUT);
if (err < 0 || (size_t)err != size)
return err;
return 0;
}
#if 0
static int krait_usb_read(struct krait_private *priv,
int request, int command,
char *buf, size_t size)
{
int err;
err = libusb_control_transfer(
priv->m->usb_ctx->h,
LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_CLASS |
LIBUSB_RECIPIENT_INTERFACE,
request, command, 0,
(unsigned char *)buf, size,
RAZER_USB_TIMEOUT);
if (err < 0 || (size_t)err != size)
return err;
return 0;
}
#endif
static int krait_do_commit(struct krait_private *priv)
{
uint8_t value;
int err;
switch (priv->cur_dpimapping->res[RAZER_DIM_0]) {
case RAZER_MOUSE_RES_400DPI:
value = 6;
break;
case RAZER_MOUSE_RES_1600DPI:
value = 4;
break;
default:
return -EINVAL;
}
err = krait_usb_write(priv, LIBUSB_REQUEST_SET_CONFIGURATION,
0x02, &value, sizeof(value));
if (err)
return err;
return 0;
}
static int krait_commit(struct razer_mouse *m, int force)
{
struct krait_private *priv = m->drv_data;
int err = 0;
if (!m->claim_count)
return -EBUSY;
if (priv->commit_pending || force) {
err = krait_do_commit(priv);
if (!err)
priv->commit_pending = 0;
}
return err;
}
static int krait_supported_resolutions(struct razer_mouse *m,
enum razer_mouse_res **res_list)
{
enum razer_mouse_res *list;
const int count = 2;
list = zalloc(sizeof(*list) * count);
if (!list)
return -ENOMEM;
list[0] = RAZER_MOUSE_RES_400DPI;
list[1] = RAZER_MOUSE_RES_1600DPI;
*res_list = list;
return count;
}
static struct razer_mouse_profile * krait_get_profiles(struct razer_mouse *m)
{
struct krait_private *priv = m->drv_data;
return &priv->profile;
}
static int krait_supported_dpimappings(struct razer_mouse *m,
struct razer_mouse_dpimapping **res_ptr)
{
struct krait_private *priv = m->drv_data;
*res_ptr = &priv->dpimapping[0];
return ARRAY_SIZE(priv->dpimapping);
}
static struct razer_mouse_dpimapping * krait_get_dpimapping(struct razer_mouse_profile *p,
struct razer_axis *axis)
{
struct krait_private *priv = p->mouse->drv_data;
return priv->cur_dpimapping;
}
static int krait_set_dpimapping(struct razer_mouse_profile *p,
struct razer_axis *axis,
struct razer_mouse_dpimapping *d)
{
struct krait_private *priv = p->mouse->drv_data;
if (!priv->m->claim_count)
return -EBUSY;
priv->cur_dpimapping = d;
priv->commit_pending = 1;
return 0;
}
int razer_krait_init(struct razer_mouse *m,
struct libusb_device *usbdev)
{
struct krait_private *priv;
int err;
priv = zalloc(sizeof(struct krait_private));
if (!priv)
return -ENOMEM;
priv->m = m;
m->drv_data = priv;
err = razer_usb_add_used_interface(m->usb_ctx, 0, 0);
if (err) {
free(priv);
return err;
}
priv->profile.nr = 0;
priv->profile.get_dpimapping = krait_get_dpimapping;
priv->profile.set_dpimapping = krait_set_dpimapping;
priv->profile.mouse = m;
priv->dpimapping[0].nr = 0;
priv->dpimapping[0].res[RAZER_DIM_0] = RAZER_MOUSE_RES_400DPI;
priv->dpimapping[0].dimension_mask = (1 << RAZER_DIM_0);
priv->dpimapping[0].change = NULL;
priv->dpimapping[0].mouse = m;
priv->dpimapping[1].nr = 1;
priv->dpimapping[1].res[RAZER_DIM_0] = RAZER_MOUSE_RES_1600DPI;
priv->dpimapping[1].dimension_mask = (1 << RAZER_DIM_0);
priv->dpimapping[1].change = NULL;
priv->dpimapping[1].mouse = m;
priv->cur_dpimapping = &priv->dpimapping[1];
m->type = RAZER_MOUSETYPE_KRAIT;
razer_generic_usb_gen_idstr(usbdev, NULL, "Krait", 1,
NULL, m->idstr);
m->commit = krait_commit;
m->get_profiles = krait_get_profiles;
m->supported_resolutions = krait_supported_resolutions;
m->supported_dpimappings = krait_supported_dpimappings;
return 0;
}
void razer_krait_release(struct razer_mouse *m)
{
struct krait_private *priv = m->drv_data;
free(priv);
}
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