![Jakub Schmidtke](/assets/img/avatar_default.png)
Driver for the OLED tiny display on some Asus laptops. From: Jakub Schmidtke <sjakub@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
746 lines
18 KiB
C
746 lines
18 KiB
C
/*
|
|
* Asus OLED USB driver
|
|
*
|
|
* Copyright (C) 2007,2008 Jakub Schmidtke (sjakub@gmail.com)
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
*
|
|
*
|
|
* This module is based on usbled and asus-laptop modules.
|
|
*
|
|
*
|
|
* Asus OLED support is based on asusoled program taken from
|
|
* https://launchpad.net/asusoled/.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/ctype.h>
|
|
|
|
#define ASUS_OLED_VERSION "0.04-dev"
|
|
#define ASUS_OLED_NAME "asus-oled"
|
|
#define ASUS_OLED_UNDERSCORE_NAME "asus_oled"
|
|
|
|
#define ASUS_OLED_ERROR "Asus OLED Display Error: "
|
|
|
|
#define ASUS_OLED_STATIC 's'
|
|
#define ASUS_OLED_ROLL 'r'
|
|
#define ASUS_OLED_FLASH 'f'
|
|
|
|
#define ASUS_OLED_MAX_WIDTH 1792
|
|
#define ASUS_OLED_DISP_HEIGHT 32
|
|
#define ASUS_OLED_PACKET_BUF_SIZE 256
|
|
|
|
MODULE_AUTHOR("Jakub Schmidtke, sjakub@gmail.com");
|
|
MODULE_DESCRIPTION("Asus OLED Driver v" ASUS_OLED_VERSION);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static struct class *oled_class = 0;
|
|
static int oled_num = 0;
|
|
|
|
static uint start_off = 0;
|
|
|
|
module_param(start_off, uint, 0644);
|
|
|
|
MODULE_PARM_DESC(start_off, "Set to 1 to switch off OLED display after it is attached");
|
|
|
|
typedef enum {
|
|
PACK_MODE_G1,
|
|
PACK_MODE_G50,
|
|
PACK_MODE_LAST
|
|
} oled_pack_mode_t;
|
|
|
|
struct oled_dev_desc_str {
|
|
uint16_t idVendor;
|
|
uint16_t idProduct;
|
|
uint16_t devWidth; // width of display
|
|
oled_pack_mode_t packMode; // formula to be used while packing the picture
|
|
const char *devDesc;
|
|
};
|
|
|
|
/* table of devices that work with this driver */
|
|
static struct usb_device_id id_table [] = {
|
|
{ USB_DEVICE(0x0b05, 0x1726) }, // Asus G1/G2 (and variants)
|
|
{ USB_DEVICE(0x0b05, 0x175b) }, // Asus G50V (and possibly others - G70? G71?)
|
|
{ },
|
|
};
|
|
|
|
/* parameters of specific devices */
|
|
static struct oled_dev_desc_str oled_dev_desc_table [] = {
|
|
{ 0x0b05, 0x1726, 128, PACK_MODE_G1, "G1/G2" },
|
|
{ 0x0b05, 0x175b, 256, PACK_MODE_G50, "G50" },
|
|
{ },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE (usb, id_table);
|
|
|
|
#define SETUP_PACKET_HEADER(packet, val1, val2, val3, val4, val5, val6, val7) \
|
|
do { \
|
|
memset(packet, 0, sizeof(struct asus_oled_header)); \
|
|
packet->header.magic1 = 0x55; \
|
|
packet->header.magic2 = 0xaa; \
|
|
packet->header.flags = val1; \
|
|
packet->header.value3 = val2; \
|
|
packet->header.buffer1 = val3; \
|
|
packet->header.buffer2 = val4; \
|
|
packet->header.value6 = val5; \
|
|
packet->header.value7 = val6; \
|
|
packet->header.value8 = val7; \
|
|
} while(0);
|
|
|
|
struct asus_oled_header {
|
|
uint8_t magic1;
|
|
uint8_t magic2;
|
|
uint8_t flags;
|
|
uint8_t value3;
|
|
uint8_t buffer1;
|
|
uint8_t buffer2;
|
|
uint8_t value6;
|
|
uint8_t value7;
|
|
uint8_t value8;
|
|
uint8_t padding2[7];
|
|
} __attribute((packed));
|
|
|
|
struct asus_oled_packet {
|
|
struct asus_oled_header header;
|
|
uint8_t bitmap[ASUS_OLED_PACKET_BUF_SIZE];
|
|
} __attribute((packed));
|
|
|
|
struct asus_oled_dev {
|
|
struct usb_device * udev;
|
|
uint8_t pic_mode;
|
|
uint16_t dev_width;
|
|
oled_pack_mode_t pack_mode;
|
|
size_t height;
|
|
size_t width;
|
|
size_t x_shift;
|
|
size_t y_shift;
|
|
size_t buf_offs;
|
|
uint8_t last_val;
|
|
size_t buf_size;
|
|
char *buf;
|
|
uint8_t enabled;
|
|
struct device *dev;
|
|
};
|
|
|
|
static void enable_oled(struct asus_oled_dev *odev, uint8_t enabl)
|
|
{
|
|
int a;
|
|
int retval;
|
|
int act_len;
|
|
struct asus_oled_packet * packet;
|
|
|
|
packet = kzalloc(sizeof(struct asus_oled_packet), GFP_KERNEL);
|
|
|
|
if (!packet) {
|
|
dev_err(&odev->udev->dev, "out of memory\n");
|
|
return;
|
|
}
|
|
|
|
SETUP_PACKET_HEADER(packet, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00);
|
|
|
|
if (enabl) packet->bitmap[0] = 0xaf;
|
|
else packet->bitmap[0] = 0xae;
|
|
|
|
for (a=0; a<1; a++) {
|
|
retval = usb_bulk_msg(odev->udev,
|
|
usb_sndbulkpipe(odev->udev, 2),
|
|
packet,
|
|
sizeof(struct asus_oled_header) + 1,
|
|
&act_len,
|
|
-1);
|
|
|
|
if (retval)
|
|
dev_dbg(&odev->udev->dev, "retval = %d\n", retval);
|
|
}
|
|
|
|
odev->enabled = enabl;
|
|
|
|
kfree(packet);
|
|
}
|
|
|
|
static ssize_t set_enabled(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct usb_interface *intf = to_usb_interface(dev);
|
|
struct asus_oled_dev *odev = usb_get_intfdata(intf);
|
|
int temp = simple_strtoul(buf, NULL, 10);
|
|
|
|
enable_oled(odev, temp);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t class_set_enabled(struct device *device, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct asus_oled_dev *odev = (struct asus_oled_dev *) dev_get_drvdata(device);
|
|
|
|
int temp = simple_strtoul(buf, NULL, 10);
|
|
|
|
enable_oled(odev, temp);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t get_enabled(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct usb_interface *intf = to_usb_interface(dev);
|
|
struct asus_oled_dev *odev = usb_get_intfdata(intf);
|
|
|
|
return sprintf(buf, "%d\n", odev->enabled);
|
|
}
|
|
|
|
static ssize_t class_get_enabled(struct device *device, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct asus_oled_dev *odev = (struct asus_oled_dev *) dev_get_drvdata(device);
|
|
|
|
return sprintf(buf, "%d\n", odev->enabled);
|
|
}
|
|
|
|
static void send_packets(struct usb_device *udev, struct asus_oled_packet *packet,
|
|
char *buf, uint8_t p_type, size_t p_num)
|
|
{
|
|
size_t i;
|
|
int act_len;
|
|
|
|
for (i = 0; i < p_num; i++) {
|
|
int retval;
|
|
|
|
switch (p_type) {
|
|
case ASUS_OLED_ROLL:
|
|
SETUP_PACKET_HEADER(packet, 0x40, 0x80, p_num, i + 1, 0x00, 0x01, 0xff);
|
|
break;
|
|
case ASUS_OLED_STATIC:
|
|
SETUP_PACKET_HEADER(packet, 0x10 + i, 0x80, 0x01, 0x01, 0x00, 0x01, 0x00);
|
|
break;
|
|
case ASUS_OLED_FLASH:
|
|
SETUP_PACKET_HEADER(packet, 0x10 + i, 0x80, 0x01, 0x01, 0x00, 0x00, 0xff);
|
|
break;
|
|
}
|
|
|
|
memcpy(packet->bitmap, buf + (ASUS_OLED_PACKET_BUF_SIZE*i), ASUS_OLED_PACKET_BUF_SIZE);
|
|
|
|
retval = usb_bulk_msg(udev,
|
|
usb_sndctrlpipe(udev, 2),
|
|
packet,
|
|
sizeof(struct asus_oled_packet),
|
|
&act_len,
|
|
-1);
|
|
|
|
if (retval)
|
|
dev_dbg(&udev->dev, "retval = %d\n", retval);
|
|
}
|
|
}
|
|
|
|
static void send_packet(struct usb_device *udev, struct asus_oled_packet *packet, size_t offset, size_t len, char *buf, uint8_t b1, uint8_t b2, uint8_t b3, uint8_t b4, uint8_t b5, uint8_t b6){
|
|
int retval;
|
|
int act_len;
|
|
|
|
SETUP_PACKET_HEADER(packet, b1, b2, b3, b4, b5, b6, 0x00);
|
|
memcpy(packet->bitmap, buf + offset, len);
|
|
|
|
retval = usb_bulk_msg(udev,
|
|
usb_sndctrlpipe(udev, 2),
|
|
packet,
|
|
sizeof(struct asus_oled_packet),
|
|
&act_len,
|
|
-1);
|
|
|
|
if (retval)
|
|
dev_dbg(&udev->dev, "retval = %d\n", retval);
|
|
}
|
|
|
|
|
|
static void send_packets_g50(struct usb_device *udev, struct asus_oled_packet *packet, char *buf)
|
|
{
|
|
send_packet(udev, packet, 0, 0x100, buf, 0x10, 0x00, 0x02, 0x01, 0x00, 0x01);
|
|
send_packet(udev, packet, 0x100, 0x080, buf, 0x10, 0x00, 0x02, 0x02, 0x80, 0x00);
|
|
|
|
send_packet(udev, packet, 0x180, 0x100, buf, 0x11, 0x00, 0x03, 0x01, 0x00, 0x01);
|
|
send_packet(udev, packet, 0x280, 0x100, buf, 0x11, 0x00, 0x03, 0x02, 0x00, 0x01);
|
|
send_packet(udev, packet, 0x380, 0x080, buf, 0x11, 0x00, 0x03, 0x03, 0x80, 0x00);
|
|
}
|
|
|
|
|
|
static void send_data(struct asus_oled_dev *odev)
|
|
{
|
|
size_t packet_num = odev->buf_size / ASUS_OLED_PACKET_BUF_SIZE;
|
|
struct asus_oled_packet * packet;
|
|
|
|
packet = kzalloc(sizeof(struct asus_oled_packet), GFP_KERNEL);
|
|
|
|
if (!packet) {
|
|
dev_err(&odev->udev->dev, "out of memory\n");
|
|
return;
|
|
}
|
|
|
|
if (odev->pack_mode==PACK_MODE_G1){
|
|
// When sending roll-mode data the display updated only first packet.
|
|
// I have no idea why, but when static picture is send just before
|
|
// rolling picture - everything works fine.
|
|
if (odev->pic_mode == ASUS_OLED_ROLL)
|
|
send_packets(odev->udev, packet, odev->buf, ASUS_OLED_STATIC, 2);
|
|
|
|
// Only ROLL mode can use more than 2 packets.
|
|
if (odev->pic_mode != ASUS_OLED_ROLL && packet_num > 2)
|
|
packet_num = 2;
|
|
|
|
send_packets(odev->udev, packet, odev->buf, odev->pic_mode, packet_num);
|
|
}
|
|
else
|
|
if (odev->pack_mode==PACK_MODE_G50){
|
|
send_packets_g50(odev->udev, packet, odev->buf);
|
|
}
|
|
|
|
kfree(packet);
|
|
}
|
|
|
|
static int append_values(struct asus_oled_dev *odev, uint8_t val, size_t count)
|
|
{
|
|
while (count-- > 0) {
|
|
if (val) {
|
|
size_t x = odev->buf_offs % odev->width;
|
|
size_t y = odev->buf_offs / odev->width;
|
|
size_t i;
|
|
|
|
x += odev->x_shift;
|
|
y += odev->y_shift;
|
|
|
|
switch(odev->pack_mode)
|
|
{
|
|
case PACK_MODE_G1:
|
|
// i = (x/128)*640 + 127 - x + (y/8)*128;
|
|
// This one for 128 is the same, but might be better for different widths?
|
|
i = (x/odev->dev_width)*640 + odev->dev_width - 1 - x + (y/8)*odev->dev_width;
|
|
break;
|
|
|
|
case PACK_MODE_G50:
|
|
i = (odev->dev_width - 1 - x)/8 + y*odev->dev_width/8;
|
|
break;
|
|
|
|
default:
|
|
i = 0;
|
|
printk(ASUS_OLED_ERROR "Unknown OLED Pack Mode: %d!\n", odev->pack_mode);
|
|
break;
|
|
}
|
|
|
|
if (i >= odev->buf_size) {
|
|
printk(ASUS_OLED_ERROR "Buffer overflow! Report a bug in the driver: offs: %d >= %d i: %d (x: %d y: %d)\n",
|
|
(int) odev->buf_offs, (int) odev->buf_size, (int) i, (int) x, (int) y);
|
|
return -EIO;
|
|
}
|
|
|
|
switch (odev->pack_mode)
|
|
{
|
|
case PACK_MODE_G1:
|
|
odev->buf[i] &= ~(1<<(y%8));
|
|
break;
|
|
|
|
case PACK_MODE_G50:
|
|
odev->buf[i] &= ~(1<<(x%8));
|
|
break;
|
|
|
|
default:
|
|
// cannot get here; stops gcc complaining
|
|
;
|
|
}
|
|
}
|
|
|
|
odev->last_val = val;
|
|
odev->buf_offs++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t odev_set_picture(struct asus_oled_dev *odev, const char *buf, size_t count)
|
|
{
|
|
size_t offs = 0, max_offs;
|
|
|
|
if (count < 1) return 0;
|
|
|
|
if (tolower(buf[0]) == 'b'){
|
|
// binary mode, set the entire memory
|
|
|
|
size_t i;
|
|
|
|
odev->buf_size = (odev->dev_width * ASUS_OLED_DISP_HEIGHT) / 8;
|
|
|
|
if (odev->buf) kfree(odev->buf);
|
|
odev->buf = kmalloc(odev->buf_size, GFP_KERNEL);
|
|
|
|
memset(odev->buf, 0xff, odev->buf_size);
|
|
|
|
for (i=1; i < count && i<=32*32; i++){
|
|
odev->buf[i-1] = buf[i];
|
|
odev->buf_offs = i-1;
|
|
}
|
|
|
|
odev->width=odev->dev_width / 8;
|
|
odev->height=ASUS_OLED_DISP_HEIGHT;
|
|
odev->x_shift=0;
|
|
odev->y_shift=0;
|
|
odev->last_val=0;
|
|
|
|
send_data(odev);
|
|
|
|
return count;
|
|
}
|
|
|
|
if (buf[0] == '<') {
|
|
size_t i;
|
|
size_t w = 0, h = 0;
|
|
size_t w_mem, h_mem;
|
|
|
|
if (count < 10 || buf[2] != ':') {
|
|
goto error_header;
|
|
}
|
|
|
|
switch(tolower(buf[1])) {
|
|
case ASUS_OLED_STATIC:
|
|
case ASUS_OLED_ROLL:
|
|
case ASUS_OLED_FLASH:
|
|
odev->pic_mode = buf[1];
|
|
break;
|
|
default:
|
|
printk(ASUS_OLED_ERROR "Wrong picture mode: '%c'.\n", buf[1]);
|
|
return -EIO;
|
|
break;
|
|
}
|
|
|
|
for (i = 3; i < count; ++i) {
|
|
if (buf[i] >= '0' && buf[i] <= '9') {
|
|
w = 10*w + (buf[i] - '0');
|
|
|
|
if (w > ASUS_OLED_MAX_WIDTH) goto error_width;
|
|
}
|
|
else if (tolower(buf[i]) == 'x') break;
|
|
else goto error_width;
|
|
}
|
|
|
|
for (++i; i < count; ++i) {
|
|
if (buf[i] >= '0' && buf[i] <= '9') {
|
|
h = 10*h + (buf[i] - '0');
|
|
|
|
if (h > ASUS_OLED_DISP_HEIGHT) goto error_height;
|
|
}
|
|
else if (tolower(buf[i]) == '>') break;
|
|
else goto error_height;
|
|
}
|
|
|
|
if (w < 1 || w > ASUS_OLED_MAX_WIDTH) goto error_width;
|
|
|
|
if (h < 1 || h > ASUS_OLED_DISP_HEIGHT) goto error_height;
|
|
|
|
if (i >= count || buf[i] != '>') goto error_header;
|
|
|
|
offs = i+1;
|
|
|
|
if (w % (odev->dev_width) != 0)
|
|
w_mem = (w/(odev->dev_width) + 1)*(odev->dev_width);
|
|
else
|
|
w_mem = w;
|
|
|
|
if (h < ASUS_OLED_DISP_HEIGHT)
|
|
h_mem = ASUS_OLED_DISP_HEIGHT;
|
|
else
|
|
h_mem = h;
|
|
|
|
odev->buf_size = w_mem * h_mem / 8;
|
|
|
|
if (odev->buf) kfree(odev->buf);
|
|
odev->buf = kmalloc(odev->buf_size, GFP_KERNEL);
|
|
|
|
if (odev->buf == NULL) {
|
|
odev->buf_size = 0;
|
|
printk(ASUS_OLED_ERROR "Out of memory!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memset(odev->buf, 0xff, odev->buf_size);
|
|
|
|
odev->buf_offs = 0;
|
|
odev->width = w;
|
|
odev->height = h;
|
|
odev->x_shift = 0;
|
|
odev->y_shift = 0;
|
|
odev->last_val = 0;
|
|
|
|
if (odev->pic_mode == ASUS_OLED_FLASH) {
|
|
if (h < ASUS_OLED_DISP_HEIGHT/2)
|
|
odev->y_shift = (ASUS_OLED_DISP_HEIGHT/2 - h)/2;
|
|
}
|
|
else {
|
|
if (h < ASUS_OLED_DISP_HEIGHT)
|
|
odev->y_shift = (ASUS_OLED_DISP_HEIGHT - h)/2;
|
|
}
|
|
|
|
if (w < (odev->dev_width))
|
|
odev->x_shift = ((odev->dev_width) - w)/2;
|
|
}
|
|
|
|
max_offs = odev->width * odev->height;
|
|
|
|
while (offs < count && odev->buf_offs < max_offs) {
|
|
int ret;
|
|
|
|
if (buf[offs] == '1' || buf[offs] == '#') {
|
|
if ( (ret = append_values(odev, 1, 1)) < 0) return ret;
|
|
}
|
|
else if (buf[offs] == '0' || buf[offs] == ' ') {
|
|
if ( (ret = append_values(odev, 0, 1)) < 0) return ret;
|
|
}
|
|
else if (buf[offs] == '\n') {
|
|
// New line detected. Lets assume, that all characters till the end of the
|
|
// line were equal to the last character in this line.
|
|
if (odev->buf_offs % odev->width != 0)
|
|
if ( (ret = append_values(odev, odev->last_val,
|
|
odev->width - (odev->buf_offs % odev->width))) < 0) return ret;
|
|
}
|
|
|
|
offs++;
|
|
}
|
|
|
|
if (odev->buf_offs >= max_offs) send_data(odev);
|
|
|
|
return count;
|
|
|
|
error_width:
|
|
printk(ASUS_OLED_ERROR "Wrong picture width specified.\n");
|
|
return -EIO;
|
|
|
|
error_height:
|
|
printk(ASUS_OLED_ERROR "Wrong picture height specified.\n");
|
|
return -EIO;
|
|
|
|
error_header:
|
|
printk(ASUS_OLED_ERROR "Wrong picture header.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
static ssize_t set_picture(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct usb_interface *intf = to_usb_interface(dev);
|
|
|
|
return odev_set_picture(usb_get_intfdata(intf), buf, count);
|
|
}
|
|
|
|
static ssize_t class_set_picture(struct device *device, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
return odev_set_picture((struct asus_oled_dev *) dev_get_drvdata(device), buf, count);
|
|
}
|
|
|
|
#define ASUS_OLED_DEVICE_ATTR(_file) dev_attr_asus_oled_##_file
|
|
|
|
static DEVICE_ATTR(asus_oled_enabled, S_IWUGO | S_IRUGO, get_enabled, set_enabled);
|
|
static DEVICE_ATTR(asus_oled_picture, S_IWUGO , NULL, set_picture);
|
|
|
|
static DEVICE_ATTR(enabled, S_IWUGO | S_IRUGO, class_get_enabled, class_set_enabled);
|
|
static DEVICE_ATTR(picture, S_IWUGO, NULL, class_set_picture);
|
|
|
|
static int asus_oled_probe(struct usb_interface *interface, const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(interface);
|
|
struct asus_oled_dev *odev = NULL;
|
|
int retval = -ENOMEM;
|
|
uint16_t dev_width = 0;
|
|
oled_pack_mode_t pack_mode = PACK_MODE_LAST;
|
|
const struct oled_dev_desc_str * dev_desc = oled_dev_desc_table;
|
|
const char *desc = 0;
|
|
|
|
if (id == 0) {
|
|
// Even possible? Just to make sure...
|
|
dev_err(&interface->dev, "No usb_device_id provided!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
for (; dev_desc->idVendor; dev_desc++)
|
|
{
|
|
if (dev_desc->idVendor == id->idVendor
|
|
&& dev_desc->idProduct == id->idProduct)
|
|
{
|
|
dev_width = dev_desc->devWidth;
|
|
desc = dev_desc->devDesc;
|
|
pack_mode = dev_desc->packMode;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( !desc || dev_width < 1 || pack_mode == PACK_MODE_LAST) {
|
|
dev_err(&interface->dev, "Missing or incomplete device description!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
odev = kzalloc(sizeof(struct asus_oled_dev), GFP_KERNEL);
|
|
|
|
if (odev == NULL) {
|
|
dev_err(&interface->dev, "Out of memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
odev->udev = usb_get_dev(udev);
|
|
odev->pic_mode = ASUS_OLED_STATIC;
|
|
odev->dev_width = dev_width;
|
|
odev->pack_mode = pack_mode;
|
|
odev->height = 0;
|
|
odev->width = 0;
|
|
odev->x_shift = 0;
|
|
odev->y_shift = 0;
|
|
odev->buf_offs = 0;
|
|
odev->buf_size = 0;
|
|
odev->last_val = 0;
|
|
odev->buf = NULL;
|
|
odev->enabled = 1;
|
|
odev->dev = 0;
|
|
|
|
usb_set_intfdata (interface, odev);
|
|
|
|
if ((retval = device_create_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(enabled)))) {
|
|
goto err_files;
|
|
}
|
|
|
|
if ((retval = device_create_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(picture)))) {
|
|
goto err_files;
|
|
}
|
|
|
|
odev->dev = device_create(oled_class, &interface->dev, MKDEV(0,0),
|
|
NULL,"oled_%d", ++oled_num);
|
|
|
|
if (IS_ERR(odev->dev)) {
|
|
retval = PTR_ERR(odev->dev);
|
|
goto err_files;
|
|
}
|
|
|
|
dev_set_drvdata(odev->dev, odev);
|
|
|
|
if ( (retval = device_create_file(odev->dev, &dev_attr_enabled))) {
|
|
goto err_class_enabled;
|
|
}
|
|
|
|
if ( (retval = device_create_file(odev->dev, &dev_attr_picture))) {
|
|
goto err_class_picture;
|
|
}
|
|
|
|
dev_info(&interface->dev, "Attached Asus OLED device: %s [width %u, pack_mode %d]\n", desc, odev->dev_width, odev->pack_mode);
|
|
|
|
if (start_off)
|
|
enable_oled(odev, 0);
|
|
|
|
return 0;
|
|
|
|
err_class_picture:
|
|
device_remove_file(odev->dev, &dev_attr_picture);
|
|
|
|
err_class_enabled:
|
|
device_remove_file(odev->dev, &dev_attr_enabled);
|
|
device_unregister(odev->dev);
|
|
|
|
err_files:
|
|
device_remove_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(enabled));
|
|
device_remove_file(&interface->dev, &ASUS_OLED_DEVICE_ATTR(picture));
|
|
|
|
usb_set_intfdata (interface, NULL);
|
|
usb_put_dev(odev->udev);
|
|
kfree(odev);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void asus_oled_disconnect(struct usb_interface *interface)
|
|
{
|
|
struct asus_oled_dev *odev;
|
|
|
|
odev = usb_get_intfdata (interface);
|
|
usb_set_intfdata (interface, NULL);
|
|
|
|
device_remove_file(odev->dev, &dev_attr_picture);
|
|
device_remove_file(odev->dev, &dev_attr_enabled);
|
|
device_unregister(odev->dev);
|
|
|
|
device_remove_file(&interface->dev, & ASUS_OLED_DEVICE_ATTR(picture));
|
|
device_remove_file(&interface->dev, & ASUS_OLED_DEVICE_ATTR(enabled));
|
|
|
|
usb_put_dev(odev->udev);
|
|
|
|
if (odev->buf) kfree(odev->buf);
|
|
|
|
kfree(odev);
|
|
|
|
dev_info(&interface->dev, "Disconnected Asus OLED device\n");
|
|
}
|
|
|
|
static struct usb_driver oled_driver = {
|
|
.name = ASUS_OLED_NAME,
|
|
.probe = asus_oled_probe,
|
|
.disconnect = asus_oled_disconnect,
|
|
.id_table = id_table,
|
|
};
|
|
|
|
static ssize_t version_show(struct class *dev, char *buf)
|
|
{
|
|
return sprintf(buf, ASUS_OLED_UNDERSCORE_NAME " %s\n", ASUS_OLED_VERSION);
|
|
}
|
|
|
|
static CLASS_ATTR(version, S_IRUGO, version_show, NULL);
|
|
|
|
static int __init asus_oled_init(void)
|
|
{
|
|
int retval = 0;
|
|
oled_class = class_create(THIS_MODULE, ASUS_OLED_UNDERSCORE_NAME);
|
|
|
|
if (IS_ERR(oled_class)) {
|
|
err("Error creating " ASUS_OLED_UNDERSCORE_NAME " class");
|
|
return PTR_ERR(oled_class);
|
|
}
|
|
|
|
if ((retval = class_create_file(oled_class, &class_attr_version))) {
|
|
err("Error creating class version file");
|
|
goto error;
|
|
}
|
|
|
|
retval = usb_register(&oled_driver);
|
|
|
|
if (retval) {
|
|
err("usb_register failed. Error number %d", retval);
|
|
goto error;
|
|
}
|
|
|
|
return retval;
|
|
|
|
error:
|
|
class_destroy(oled_class);
|
|
return retval;
|
|
}
|
|
|
|
static void __exit asus_oled_exit(void)
|
|
{
|
|
class_remove_file(oled_class, &class_attr_version);
|
|
class_destroy(oled_class);
|
|
|
|
usb_deregister(&oled_driver);
|
|
}
|
|
|
|
module_init (asus_oled_init);
|
|
module_exit (asus_oled_exit);
|
|
|