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|
/*
* Lowlevel hardware access for the
* Razer Copperhead mouse
*
* Important notice:
* This hardware driver is based on reverse engineering only.
*
* Copyright (C) 2009-2011 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_copperhead.h"
#include "razer_private.h"
#include "buttonmapping.h"
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
enum { /* Misc constants */
COPPERHEAD_NR_PROFILES = 5,
COPPERHEAD_NR_DPIMAPPINGS = 4,
};
/* The wire protocol data structures... */
enum copperhead_phys_button {
/* Physical button IDs */
COPPERHEAD_PHYSBUT_LEFT = 0x01, /* Left button */
COPPERHEAD_PHYSBUT_RIGHT, /* Right button */
COPPERHEAD_PHYSBUT_MIDDLE, /* Middle button */
COPPERHEAD_PHYSBUT_LFRONT, /* Left side, front button */
COPPERHEAD_PHYSBUT_LREAR, /* Left side, rear button */
COPPERHEAD_PHYSBUT_RFRONT, /* Right side, front button */
COPPERHEAD_PHYSBUT_RREAR, /* Right side, rear button */
NR_COPPERHEAD_PHYSBUT = 7, /* Number of physical buttons */
};
struct copperhead_profcfg_cmd {
le16_t packetlength;
le16_t magic;
le16_t profilenr;
le16_t reply_packetlength; /* Only valid for read data */
le16_t reply_magic; /* Only valid for read data */
le16_t reply_profilenr;
uint8_t dpisel;
uint8_t freq;
uint8_t buttonmap[48 * NR_COPPERHEAD_PHYSBUT - 4];
le16_t checksum;
} _packed;
#define COPPERHEAD_PROFCFG_MAGIC cpu_to_le16(0x0002)
struct copperhead_buttons {
struct razer_buttonmapping mapping[NR_COPPERHEAD_PHYSBUT];
};
struct copperhead_private {
struct razer_mouse *m;
uint16_t fw_version;
/* The active profile. */
struct razer_mouse_profile *cur_profile;
/* Profile configuration (one per profile). */
struct razer_mouse_profile profiles[COPPERHEAD_NR_PROFILES];
/* The active DPI mapping; per profile. */
struct razer_mouse_dpimapping *cur_dpimapping[COPPERHEAD_NR_PROFILES];
/* The possible DPI mappings. */
struct razer_mouse_dpimapping dpimappings[COPPERHEAD_NR_DPIMAPPINGS];
/* The active scan frequency; per profile. */
enum razer_mouse_freq cur_freq[COPPERHEAD_NR_PROFILES];
/* The active button mapping; per profile. */
struct copperhead_buttons buttons[COPPERHEAD_NR_PROFILES];
bool commit_pending;
struct razer_event_spacing commit_spacing;
};
/* A list of physical buttons on the device. */
static struct razer_button copperhead_physical_buttons[] = {
{ .id = COPPERHEAD_PHYSBUT_LEFT, .name = "Leftclick", },
{ .id = COPPERHEAD_PHYSBUT_RIGHT, .name = "Rightclick", },
{ .id = COPPERHEAD_PHYSBUT_MIDDLE, .name = "Middleclick", },
{ .id = COPPERHEAD_PHYSBUT_LFRONT, .name = "Leftside front", },
{ .id = COPPERHEAD_PHYSBUT_LREAR, .name = "Leftside rear", },
{ .id = COPPERHEAD_PHYSBUT_RFRONT, .name = "Rightside front", },
{ .id = COPPERHEAD_PHYSBUT_RREAR, .name = "Rightside rear", },
};
/* A list of possible button functions. */
static struct razer_button_function copperhead_button_functions[] = {
BUTTONFUNC_LEFT,
BUTTONFUNC_RIGHT,
BUTTONFUNC_MIDDLE,
BUTTONFUNC_PROFDOWN,
BUTTONFUNC_PROFUP,
BUTTONFUNC_DPIUP,
BUTTONFUNC_DPIDOWN,
BUTTONFUNC_DPI1,
BUTTONFUNC_DPI2,
BUTTONFUNC_DPI3,
BUTTONFUNC_DPI4,
BUTTONFUNC_DPI5,
BUTTONFUNC_WIN5,
BUTTONFUNC_WIN4,
BUTTONFUNC_SCROLLUP,
BUTTONFUNC_SCROLLDWN,
};
static int copperhead_usb_write(struct copperhead_private *priv,
int request, int command, int index,
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_OTHER,
request, command, index,
(unsigned char *)buf, size, RAZER_USB_TIMEOUT);
if (err < 0 || (size_t)err != size) {
razer_error("razer-copperhead: "
"USB write 0x%02X 0x%02X 0x%02X failed: %d\n",
request, command, index, err);
return -EIO;
}
return 0;
}
static int copperhead_usb_read(struct copperhead_private *priv,
int request, int command, int index,
void *buf, size_t size)
{
int err;
err = libusb_control_transfer(
priv->m->usb_ctx->h,
LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_CLASS |
LIBUSB_RECIPIENT_OTHER,
request, command, index,
(unsigned char *)buf, size, RAZER_USB_TIMEOUT);
if (err < 0 || (size_t)err != size) {
razer_error("razer-copperhead: "
"USB read 0x%02X 0x%02X 0x%02X failed: %d\n",
request, command, index, err);
return -EIO;
}
return 0;
}
static int copperhead_read_fw_ver(struct copperhead_private *priv)
{
char buf[2];
uint16_t ver;
buf[0]=0; //TODO
buf[1]=0;
ver = buf[0];
ver <<= 8;
ver |= buf[1];
return ver;
}
static int copperhead_do_commit(struct copperhead_private *priv)
{
union {
struct copperhead_profcfg_cmd profcfg;
uint8_t chunks[64 * 6];
} _packed u;
uint8_t *chunk;
unsigned int i, j;
int err;
unsigned char value;
BUILD_BUG_ON(sizeof(u) != 0x180);
razer_event_spacing_enter(&priv->commit_spacing);
/* Upload the profile config */
for (i = 0; i < COPPERHEAD_NR_PROFILES; i++) {
memset(&u, 0, sizeof(u));
u.profcfg.packetlength = cpu_to_le16(sizeof(u.profcfg));
u.profcfg.magic = COPPERHEAD_PROFCFG_MAGIC;
u.profcfg.profilenr = cpu_to_le16(i + 1);
u.profcfg.reply_profilenr = u.profcfg.profilenr;
switch (priv->cur_dpimapping[i]->res[RAZER_DIM_0]) {
default:
case RAZER_MOUSE_RES_400DPI:
u.profcfg.dpisel = 4;
break;
case RAZER_MOUSE_RES_800DPI:
u.profcfg.dpisel = 3;
break;
case RAZER_MOUSE_RES_1600DPI:
u.profcfg.dpisel = 2;
break;
case RAZER_MOUSE_RES_2000DPI:
u.profcfg.dpisel = 1;
break;
}
switch (priv->cur_freq[i]) {
default:
case RAZER_MOUSE_FREQ_125HZ:
u.profcfg.freq = 3;
break;
case RAZER_MOUSE_FREQ_500HZ:
u.profcfg.freq = 2;
break;
case RAZER_MOUSE_FREQ_1000HZ:
u.profcfg.freq = 1;
break;
}
err = razer_create_buttonmap(u.profcfg.buttonmap, sizeof(u.profcfg.buttonmap),
priv->buttons[i].mapping,
ARRAY_SIZE(priv->buttons[i].mapping), 46);
if (err)
goto out;
u.profcfg.checksum = razer_xor16_checksum(&u.profcfg,
sizeof(u.profcfg) - 2);
/* The profile config is committed in 64byte chunks */
chunk = &u.chunks[0];
for (j = 0; j < 6; j++, chunk += 64) {
err = copperhead_usb_write(priv, LIBUSB_REQUEST_SET_CONFIGURATION,
j + 1, 0, chunk, 64);
if (err)
goto out;
}
/* Commit the profile */
value = i + 1;
copperhead_usb_write(priv, LIBUSB_REQUEST_SET_CONFIGURATION,
0x02, 3, &value, sizeof(value));
/* Read back the result */
BUILD_BUG_ON(0x156 + 6 != sizeof(u.profcfg));
memset(&u, 0, sizeof(u));
err = copperhead_usb_read(priv, LIBUSB_REQUEST_CLEAR_FEATURE,
0x01, 0, ((uint8_t *)&u.profcfg) + 6,
sizeof(u.profcfg) - 6);
if (err)
goto out;
if (razer_xor16_checksum(&u.profcfg, sizeof(u.profcfg))) {
razer_error("hw_copperhead: Profile commit checksum mismatch\n");
err = -EIO;
goto out;
}
}
/* Select the profile */
value = priv->cur_profile->nr + 1;
err = copperhead_usb_write(priv, LIBUSB_REQUEST_SET_CONFIGURATION,
0x02, 1, &value, sizeof(value));
if (err)
goto out;
err = 0;
out:
razer_event_spacing_leave(&priv->commit_spacing);
return err;
}
static int copperhead_read_config_from_hw(struct copperhead_private *priv)
{
struct copperhead_profcfg_cmd profcfg;
unsigned int i;
unsigned char value;
int err;
/* Read the current profile number. */
err = copperhead_usb_read(priv, LIBUSB_REQUEST_CLEAR_FEATURE,
0x01, 0, &value, sizeof(value));
if (err)
return err;
if (value < 1 || value > COPPERHEAD_NR_PROFILES) {
razer_error("hw_copperhead: Got invalid profile number\n");
return -EIO;
}
priv->cur_profile = &priv->profiles[value - 1];
/* Read the profiles config */
for (i = 0; i < COPPERHEAD_NR_PROFILES; i++) {
BUILD_BUG_ON(0x156 + 6 != sizeof(profcfg));
/* Request profile config */
value = i + 1;
err = copperhead_usb_write(priv, LIBUSB_REQUEST_SET_CONFIGURATION,
0x02, 3, &value, sizeof(value));
if (err)
return err;
/* Read profile config */
memset(&profcfg, 0, sizeof(profcfg));
err = copperhead_usb_read(priv, LIBUSB_REQUEST_CLEAR_FEATURE,
0x01, 0, ((uint8_t *)&profcfg) + 6,
sizeof(profcfg) - 6);
if (err)
return err;
if (razer_xor16_checksum(&profcfg, sizeof(profcfg))) {
razer_error("hw_copperhead: Read profile data checksum mismatch\n");
return -EIO;
}
if (le16_to_cpu(profcfg.reply_profilenr) != i + 1) {
razer_error("hw_copperhead: Got invalid profile nr in profile config\n");
return -EIO;
}
switch (profcfg.dpisel) {
case 4:
priv->cur_dpimapping[i] = razer_mouse_get_dpimapping_by_res(
priv->dpimappings, ARRAY_SIZE(priv->dpimappings),
RAZER_DIM_0, RAZER_MOUSE_RES_400DPI);
break;
case 3:
priv->cur_dpimapping[i] = razer_mouse_get_dpimapping_by_res(
priv->dpimappings, ARRAY_SIZE(priv->dpimappings),
RAZER_DIM_0, RAZER_MOUSE_RES_800DPI);
break;
case 2:
priv->cur_dpimapping[i] = razer_mouse_get_dpimapping_by_res(
priv->dpimappings, ARRAY_SIZE(priv->dpimappings),
RAZER_DIM_0, RAZER_MOUSE_RES_1600DPI);
break;
case 1:
priv->cur_dpimapping[i] = razer_mouse_get_dpimapping_by_res(
priv->dpimappings, ARRAY_SIZE(priv->dpimappings),
RAZER_DIM_0, RAZER_MOUSE_RES_2000DPI);
break;
default:
razer_error("hw_copperhead: Got invalid DPI mapping selection\n");
return -EIO;
}
if (!priv->cur_dpimapping[i]) {
razer_error("hw_copperhead: Internal error: Did not find dpimapping\n");
return -ENODEV;
}
switch (profcfg.freq) {
case 3:
priv->cur_freq[i] = RAZER_MOUSE_FREQ_125HZ;
break;
case 2:
priv->cur_freq[i] = RAZER_MOUSE_FREQ_500HZ;
break;
case 1:
priv->cur_freq[i] = RAZER_MOUSE_FREQ_1000HZ;
break;
default:
razer_error("hw_copperhead: Got invalid frequency selection\n");
return -EIO;
}
err = razer_parse_buttonmap(profcfg.buttonmap, sizeof(profcfg.buttonmap),
priv->buttons[i].mapping,
ARRAY_SIZE(priv->buttons[i].mapping), 46);
if (err)
return err;
}
return 0;
}
static int copperhead_get_fw_version(struct razer_mouse *m)
{
struct copperhead_private *priv = m->drv_data;
return priv->fw_version;
}
static int copperhead_commit(struct razer_mouse *m, int force)
{
struct copperhead_private *priv = m->drv_data;
int err = 0;
if (!m->claim_count)
return -EBUSY;
if (priv->commit_pending || force) {
err = copperhead_do_commit(priv);
if (!err)
priv->commit_pending = 0;
}
return err;
}
static struct razer_mouse_profile * copperhead_get_profiles(struct razer_mouse *m)
{
struct copperhead_private *priv = m->drv_data;
return &priv->profiles[0];
}
static struct razer_mouse_profile * copperhead_get_active_profile(struct razer_mouse *m)
{
struct copperhead_private *priv = m->drv_data;
return priv->cur_profile;
}
static int copperhead_set_active_profile(struct razer_mouse *m,
struct razer_mouse_profile *p)
{
struct copperhead_private *priv = m->drv_data;
if (!priv->m->claim_count)
return -EBUSY;
priv->cur_profile = p;
priv->commit_pending = 1;
return 0;
}
static int copperhead_supported_resolutions(struct razer_mouse *m,
enum razer_mouse_res **res_list)
{
enum razer_mouse_res *list;
const int count = 4;
list = zalloc(sizeof(*list) * count);
if (!list)
return -ENOMEM;
list[0] = RAZER_MOUSE_RES_400DPI;
list[1] = RAZER_MOUSE_RES_800DPI;
list[2] = RAZER_MOUSE_RES_1600DPI;
list[3] = RAZER_MOUSE_RES_2000DPI;
*res_list = list;
return count;
}
static int copperhead_supported_freqs(struct razer_mouse *m,
enum razer_mouse_freq **freq_list)
{
enum razer_mouse_freq *list;
const int count = 3;
list = zalloc(sizeof(*list) * count);
if (!list)
return -ENOMEM;
list[0] = RAZER_MOUSE_FREQ_125HZ;
list[1] = RAZER_MOUSE_FREQ_500HZ;
list[2] = RAZER_MOUSE_FREQ_1000HZ;
*freq_list = list;
return count;
}
static enum razer_mouse_freq copperhead_get_freq(struct razer_mouse_profile *p)
{
struct copperhead_private *priv = p->mouse->drv_data;
if (p->nr >= ARRAY_SIZE(priv->cur_freq))
return -EINVAL;
return priv->cur_freq[p->nr];
}
static int copperhead_set_freq(struct razer_mouse_profile *p,
enum razer_mouse_freq freq)
{
struct copperhead_private *priv = p->mouse->drv_data;
if (!priv->m->claim_count)
return -EBUSY;
if (p->nr >= ARRAY_SIZE(priv->cur_freq))
return -EINVAL;
priv->cur_freq[p->nr] = freq;
priv->commit_pending = 1;
return 0;
}
static int copperhead_supported_dpimappings(struct razer_mouse *m,
struct razer_mouse_dpimapping **res_ptr)
{
struct copperhead_private *priv = m->drv_data;
*res_ptr = &priv->dpimappings[0];
return ARRAY_SIZE(priv->dpimappings);
}
static struct razer_mouse_dpimapping * copperhead_get_dpimapping(struct razer_mouse_profile *p,
struct razer_axis *axis)
{
struct copperhead_private *priv = p->mouse->drv_data;
if (p->nr >= ARRAY_SIZE(priv->cur_dpimapping))
return NULL;
return priv->cur_dpimapping[p->nr];
}
static int copperhead_set_dpimapping(struct razer_mouse_profile *p,
struct razer_axis *axis,
struct razer_mouse_dpimapping *d)
{
struct copperhead_private *priv = p->mouse->drv_data;
if (!priv->m->claim_count)
return -EBUSY;
if (p->nr >= ARRAY_SIZE(priv->cur_dpimapping))
return -EINVAL;
priv->cur_dpimapping[p->nr] = d;
priv->commit_pending = 1;
return 0;
}
static int copperhead_supported_buttons(struct razer_mouse *m,
struct razer_button **res_ptr)
{
*res_ptr = copperhead_physical_buttons;
return ARRAY_SIZE(copperhead_physical_buttons);
}
static int copperhead_supported_button_functions(struct razer_mouse *m,
struct razer_button_function **res_ptr)
{
*res_ptr = copperhead_button_functions;
return ARRAY_SIZE(copperhead_button_functions);
}
static struct razer_button_function * copperhead_get_button_function(struct razer_mouse_profile *p,
struct razer_button *b)
{
struct copperhead_private *priv = p->mouse->drv_data;
struct copperhead_buttons *buttons;
if (p->nr > ARRAY_SIZE(priv->buttons))
return NULL;
buttons = &priv->buttons[p->nr];
return razer_get_buttonfunction_by_button(
buttons->mapping, ARRAY_SIZE(buttons->mapping),
copperhead_button_functions, ARRAY_SIZE(copperhead_button_functions),
b);
}
static int copperhead_set_button_function(struct razer_mouse_profile *p,
struct razer_button *b,
struct razer_button_function *f)
{
struct copperhead_private *priv = p->mouse->drv_data;
struct copperhead_buttons *buttons;
struct razer_buttonmapping *mapping;
if (!priv->m->claim_count)
return -EBUSY;
if (p->nr > ARRAY_SIZE(priv->buttons))
return -EINVAL;
buttons = &priv->buttons[p->nr];
mapping = razer_get_buttonmapping_by_physid(
buttons->mapping, ARRAY_SIZE(buttons->mapping),
b->id);
if (!mapping)
return -ENODEV;
mapping->logical = f->id;
priv->commit_pending = 1;
return 0;
}
int razer_copperhead_init(struct razer_mouse *m,
struct libusb_device *usbdev)
{
struct copperhead_private *priv;
unsigned int i;
int err;
BUILD_BUG_ON(sizeof(struct copperhead_profcfg_cmd) != 0x15C);
priv = zalloc(sizeof(struct copperhead_private));
if (!priv)
return -ENOMEM;
priv->m = m;
m->drv_data = priv;
/* We need to wait some time between commits */
razer_event_spacing_init(&priv->commit_spacing, 250);
err = razer_usb_add_used_interface(m->usb_ctx, 0, 0);
err |= razer_usb_add_used_interface(m->usb_ctx, 1, 0);
if (err) {
err = -EIO;
goto err_free;
}
priv->dpimappings[0].nr = 0;
priv->dpimappings[0].res[RAZER_DIM_0] = RAZER_MOUSE_RES_400DPI;
priv->dpimappings[0].dimension_mask = (1 << RAZER_DIM_0);
priv->dpimappings[0].mouse = m;
priv->dpimappings[1].nr = 1;
priv->dpimappings[1].res[RAZER_DIM_0] = RAZER_MOUSE_RES_800DPI;
priv->dpimappings[1].dimension_mask = (1 << RAZER_DIM_0);
priv->dpimappings[1].mouse = m;
priv->dpimappings[2].nr = 2;
priv->dpimappings[2].res[RAZER_DIM_0] = RAZER_MOUSE_RES_1600DPI;
priv->dpimappings[2].dimension_mask = (1 << RAZER_DIM_0);
priv->dpimappings[2].mouse = m;
priv->dpimappings[3].nr = 3;
priv->dpimappings[3].res[RAZER_DIM_0] = RAZER_MOUSE_RES_2000DPI;
priv->dpimappings[3].dimension_mask = (1 << RAZER_DIM_0);
priv->dpimappings[3].mouse = m;
for (i = 0; i < COPPERHEAD_NR_PROFILES; i++) {
priv->profiles[i].nr = i;
priv->profiles[i].get_freq = copperhead_get_freq;
priv->profiles[i].set_freq = copperhead_set_freq;
priv->profiles[i].get_dpimapping = copperhead_get_dpimapping;
priv->profiles[i].set_dpimapping = copperhead_set_dpimapping;
priv->profiles[i].get_button_function = copperhead_get_button_function;
priv->profiles[i].set_button_function = copperhead_set_button_function;
priv->profiles[i].mouse = m;
}
err = m->claim(m);
if (err) {
razer_error("hw_copperhead: "
"Failed to initially claim the device\n");
goto err_free;
}
err = copperhead_read_fw_ver(priv);
if (err) {
razer_error("hw_copperhead: Failed to fetch firmware version number\n");
goto err_release;
}
err = copperhead_read_config_from_hw(priv);
if (err) {
razer_error("hw_copperhead: Failed to read config from hardware\n");
goto err_release;
}
m->type = RAZER_MOUSETYPE_COPPERHEAD;
razer_generic_usb_gen_idstr(usbdev, NULL, "Copperhead", 1,
NULL, m->idstr);
m->get_fw_version = copperhead_get_fw_version;
m->commit = copperhead_commit;
m->nr_profiles = COPPERHEAD_NR_PROFILES;
m->get_profiles = copperhead_get_profiles;
m->get_active_profile = copperhead_get_active_profile;
m->set_active_profile = copperhead_set_active_profile;
m->supported_resolutions = copperhead_supported_resolutions;
m->supported_freqs = copperhead_supported_freqs;
m->supported_dpimappings = copperhead_supported_dpimappings;
m->supported_buttons = copperhead_supported_buttons;
m->supported_button_functions = copperhead_supported_button_functions;
err = copperhead_do_commit(priv);
if (err) {
razer_error("hw_copperhead: Failed to commit initial config\n");
goto err_release;
}
m->release(m);
return 0;
err_release:
m->release(m);
err_free:
free(priv);
return err;
}
void razer_copperhead_release(struct razer_mouse *m)
{
struct copperhead_private *priv = m->drv_data;
free(priv);
}
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