+++ /dev/null
-
- Driver for Asus OLED display present in some Asus laptops.
-
- The code of this driver is based on 'asusoled' program taken from
- <http://lapsus.berlios.de/asus_oled.html>. I just wanted to have a simple
- kernel driver for controlling this device, but I didn't know how
- to do that. Now I know ;) Also, that program can not be used
- with usbhid loaded, which means no USB mouse/keyboard while
- controlling OLED display :(
-
- It has been tested on Asus G1 and didn't cause any problems,
- but I don't guarantee that it won't do anything wrong :)
-
- It can (and probably does) have errors. It is usable
- in my case, and I hope others will find it useful too!
-
-*******
-
-Building the module
-
- To build the module you need kernel 2.6 include files and some C compiler.
-
- Just run:
- make
- make install (as a root)
-
- It will build (hopefully) the module and install it in
- /lib/modules/'uname -r'/extra/asus_oled.ko.
-
- To load it just use:
- modprobe asus_oled
-
- You can check if it has detected your OLED display by looking into dmesg output.
- There should be something like this:
- asus-oled 2-7:1.0: Attached Asus OLED device
-
- If it doesn't find your display, you can try removing usbhid module.
- If you add asus_oled into the list of modules loaded during system boot
- before usbhid, it will work even when usbhid is present.
-
- If it still doesn't detect your hardware, check lsusb output.
- There should be similar line:
- Bus 002 Device 005: ID 0b05:1726 ASUSTek Computer, Inc.
-
- If you don't see any lines with '0b05:1726' it means that you have different
- type of hardware that is not detected (it may or may not work, but the driver
- knows only '0b05:1726' device).
-
-*******
-
-Configuration
-
- There is only one option: start_off.
- You can use it by: 'modprobe asus_oled start_off=1', or by adding this
- line to /etc/modprobe.d/asus_oled.conf:
- options asus_oled start_off=1
-
- With this option provided, asus_oled driver will switch off the display
- when it is detected and attached. It is nice feature to just switch off the 'ASUS'
- logo. If you don't use the display, it is probably the good idea to switch it off,
- to protect OLEDs from "wearing off".
-
-*******
-
-Usage
-
- This module can be controlled with two special files:
- /sys/class/asus_oled/oled_N/enabled
- /sys/class/asus_oled/oled_N/picture
-
- (N is the device number, the first, and probably the only, has number 1,
- so it is /sys/class/asus_oled/oled_1/enabled
- and /sys/class/asus_oled/oled_1/picture)
-
- 'enabled' files is for reading and writing, 'picture' is writeable only.
-
- You can write 0 or 1 to 'enabled' file, which will switch
- on and off the display. Reading from this file will tell you the last
- status set, either 0 or 1. By default it is 1, so if the device was set to 'off',
- and the computer was rebooted without power-off, this file will contain wrong
- value - because the device is off, but hasn't been disabled this time and is
- assumed to be on...
-
- To 'picture' file you write pictures to be displayed by the OLED device.
- The format of the file:
- <M:WxH>
- 00001110010111000
- 00010101010101010
- ....
-
- First line is a configuration parameter. Meaning of fields in <M:WxH>:
- M - picture mode. It can be either 's' for static pictures,
- 'r' for rolling pictures, and 'f' for flashing pictures.
- W - width of the picture. May be between 1 and 1792
- H - height of the picture. May be between 1 and 32
-
- For example <s:128x32> means static picture, 128 pixels long and 32 pixels high.
-
- The physical size of the display is 128x32 pixels. Static and flashing pictures
- can't be larger than that (actually they can, but only part of them will be displayed ;) )
-
- If the picture is smaller than 128x32 it will be centered. Rolling pictures wider than
- 128 pixels will be centered too, unless their width = n*128. Vertically they will be
- centered just like static pictures, if their height is smaller than 32.
-
- Flashing pictures will be centered horizontally if their width < 128, but they were
- centered vertically in a different way. If their height < 16, they will be centered
- in the upper half of the display (rows 0-15). This is because only the first half
- of flashing pictures is used for flashing. When the picture with heigh = 32 is
- displayed in flashing mode, its upper 16 rows will be flashing in the upper half
- of the display, and the lower half will be empty. After few seconds upper part will
- stop flashing (but that part of the picture will remain there), and the lower
- half of the display will start displayin the lower half of the picture
- in rolling mode, unless it is empty, or the picture was small enough to fit in
- upper part. It is not mine idea, this is just the way Asus' display work ;)
- So if you need just flashing, use at most 128x16 picture. If you need flashing and
- rolling, use whole size of the display.
-
- Lines following the first, configuration, line are picture data. Each '1' means
- that the pixel is lit, and '0' means that it is not. You can also use '#' as ON,
- and ' ' (space) as OFF. Empty lines and all other characters are ignored.
-
- It is possible to write everything in one line <M:WxH>01010101010101010...,
- and W*H characters will be used. If there is not enough characters, nothing will be
- displayed. However, the 'line mode' is easier to read (and write), and it also
- lets to omit parts of data. Whenever End-Of-Line character is found, but
- the line is not W characters long, it is assumed that all missing characters
- are equal to the last character in the line.
-
- Following line represents '0', '1' and a lots of '0's, dependng on the width of the picture
- provided in configuration data:
- 010
-
- So if you need empty line, it is sufficient to write line with only one '0' in it.
- The same works with '1' (or ' ' and '#').
-
- If there are too many data in the file, they will be ignored. If you are not sure
- how many characters you are missing, you can add few lines with one zero in each of them.
-
- There are some example pictures in .txt format, that can be used as follows:
- cat foo.txt > /sys/class/asus_oled/oled_1/picture
-
- If the display is switched off you also need to run:
- echo 1 > /sys/class/asus_oled/oled_1/enabled
- To switch it off, just use:
- echo 0 > /sys/class/asus_oled/oled_1/enabled
-
-
-*******
-
- For any additional info please have a look at http://lapsus.berlios.de/asus_oled.html
-
-
-
- Jakub Schmidtke (sjakub@gmail.com)
-
+++ /dev/null
-/*
- * 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
- * <http://lapsus.berlios.de/asus_oled.html>.
- *
- *
- */
-
-#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_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
-
-#define USB_VENDOR_ID_ASUS 0x0b05
-#define USB_DEVICE_ID_ASUS_LCM 0x1726
-#define USB_DEVICE_ID_ASUS_LCM2 0x175b
-
-MODULE_AUTHOR("Jakub Schmidtke, sjakub@gmail.com");
-MODULE_DESCRIPTION("Asus OLED Driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(ASUS_OLED_VERSION);
-
-static struct class *oled_class;
-static int oled_num;
-
-static uint start_off;
-
-module_param(start_off, uint, 0644);
-
-MODULE_PARM_DESC(start_off,
- "Set to 1 to switch off OLED display after it is attached");
-
-enum oled_pack_mode {
- PACK_MODE_G1,
- PACK_MODE_G50,
- PACK_MODE_LAST
-};
-
-struct oled_dev_desc_str {
- uint16_t idVendor;
- uint16_t idProduct;
- /* width of display */
- uint16_t devWidth;
- /* formula to be used while packing the picture */
- enum oled_pack_mode packMode;
- const char *devDesc;
-};
-
-/* table of devices that work with this driver */
-static const struct usb_device_id id_table[] = {
- /* Asus G1/G2 (and variants)*/
- { USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM) },
- /* Asus G50V (and possibly others - G70? G71?)*/
- { USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2) },
- { },
-};
-
-/* parameters of specific devices */
-static struct oled_dev_desc_str oled_dev_desc_table[] = {
- { USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM, 128, PACK_MODE_G1,
- "G1/G2" },
- { USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2, 256, PACK_MODE_G50,
- "G50" },
- { },
-};
-
-MODULE_DEVICE_TABLE(usb, id_table);
-
-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;
- enum oled_pack_mode 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;
- uint8_t enabled_post_resume;
- struct device *dev;
-};
-
-static void setup_packet_header(struct asus_oled_packet *packet, char flags,
- char value3, char buffer1, char buffer2, char value6,
- char value7, char value8)
-{
- memset(packet, 0, sizeof(struct asus_oled_header));
- packet->header.magic1 = 0x55;
- packet->header.magic2 = 0xaa;
- packet->header.flags = flags;
- packet->header.value3 = value3;
- packet->header.buffer1 = buffer1;
- packet->header.buffer2 = buffer2;
- packet->header.value6 = value6;
- packet->header.value7 = value7;
- packet->header.value8 = value8;
-}
-
-static void enable_oled(struct asus_oled_dev *odev, uint8_t enabl)
-{
- int retval;
- int act_len;
- struct asus_oled_packet *packet;
-
- packet = kzalloc(sizeof(struct asus_oled_packet), GFP_KERNEL);
- if (!packet)
- return;
-
- setup_packet_header(packet, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00);
-
- if (enabl)
- packet->bitmap[0] = 0xaf;
- else
- packet->bitmap[0] = 0xae;
-
- 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);
- unsigned long value;
- if (kstrtoul(buf, 10, &value))
- return -EINVAL;
-
- enable_oled(odev, value);
-
- 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);
- unsigned long value;
-
- if (kstrtoul(buf, 10, &value))
- return -EINVAL;
-
- enable_oled(odev, value);
-
- 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)
- 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 sent 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)
-{
- odev->last_val = val;
-
- if (val == 0) {
- odev->buf_offs += count;
- return 0;
- }
-
- while (count-- > 0) {
- 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;
- dev_err(odev->dev, "Unknown OLED Pack Mode: %d!\n",
- odev->pack_mode);
- break;
- }
-
- if (i >= odev->buf_size) {
- dev_err(odev->dev, "Buffer overflow! Report a bug: offs: %zu >= %zu i: %zu (x: %zu y: %zu)\n",
- odev->buf_offs, odev->buf_size, i, x, 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*/
- break;
- }
-
- 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;
-
- kfree(odev->buf);
- odev->buf = kmalloc(odev->buf_size, GFP_KERNEL);
- if (odev->buf == NULL) {
- odev->buf_size = 0;
- dev_err(odev->dev, "Out of memory!\n");
- return -ENOMEM;
- }
-
- 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:
- dev_err(odev->dev, "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;
-
- kfree(odev->buf);
- odev->buf = kmalloc(odev->buf_size, GFP_KERNEL);
-
- if (odev->buf == NULL) {
- odev->buf_size = 0;
- dev_err(odev->dev, "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 = 0;
-
- if (buf[offs] == '1' || buf[offs] == '#') {
- ret = append_values(odev, 1, 1);
- if (ret < 0)
- return ret;
- } else if (buf[offs] == '0' || buf[offs] == ' ') {
- ret = append_values(odev, 0, 1);
- if (ret < 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)
- ret = append_values(odev, odev->last_val,
- odev->width -
- (odev->buf_offs %
- odev->width));
- if (ret < 0)
- return ret;
- }
-
- offs++;
- }
-
- if (odev->buf_offs >= max_offs)
- send_data(odev);
-
- return count;
-
-error_width:
- dev_err(odev->dev, "Wrong picture width specified.\n");
- return -EIO;
-
-error_height:
- dev_err(odev->dev, "Wrong picture height specified.\n");
- return -EIO;
-
-error_header:
- dev_err(odev->dev, "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_IWUSR | S_IRUGO,
- get_enabled, set_enabled);
-static DEVICE_ATTR(asus_oled_picture, S_IWUSR , NULL, set_picture);
-
-static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO,
- class_get_enabled, class_set_enabled);
-static DEVICE_ATTR(picture, S_IWUSR, 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;
- enum oled_pack_mode pack_mode = PACK_MODE_LAST;
- const struct oled_dev_desc_str *dev_desc = oled_dev_desc_table;
- const char *desc = NULL;
-
- if (!id) {
- /* 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)
- 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 = NULL;
-
- usb_set_intfdata(interface, odev);
-
- retval = device_create_file(&interface->dev,
- &ASUS_OLED_DEVICE_ATTR(enabled));
- if (retval)
- goto err_files;
-
- retval = device_create_file(&interface->dev,
- &ASUS_OLED_DEVICE_ATTR(picture));
- if (retval)
- 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);
-
- retval = device_create_file(odev->dev, &dev_attr_enabled);
- if (retval)
- goto err_class_enabled;
-
- retval = device_create_file(odev->dev, &dev_attr_picture);
- if (retval)
- 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);
-
- kfree(odev->buf);
-
- kfree(odev);
-
- dev_info(&interface->dev, "Disconnected Asus OLED device\n");
-}
-
-#ifdef CONFIG_PM
-static int asus_oled_suspend(struct usb_interface *intf, pm_message_t message)
-{
- struct asus_oled_dev *odev;
-
- odev = usb_get_intfdata(intf);
- if (!odev)
- return -ENODEV;
-
- odev->enabled_post_resume = odev->enabled;
- enable_oled(odev, 0);
-
- return 0;
-}
-
-static int asus_oled_resume(struct usb_interface *intf)
-{
- struct asus_oled_dev *odev;
-
- odev = usb_get_intfdata(intf);
- if (!odev)
- return -ENODEV;
-
- enable_oled(odev, odev->enabled_post_resume);
-
- return 0;
-}
-#else
-#define asus_oled_suspend NULL
-#define asus_oled_resume NULL
-#endif
-
-static struct usb_driver oled_driver = {
- .name = ASUS_OLED_NAME,
- .probe = asus_oled_probe,
- .disconnect = asus_oled_disconnect,
- .id_table = id_table,
- .suspend = asus_oled_suspend,
- .resume = asus_oled_resume,
-};
-
-static CLASS_ATTR_STRING(version, S_IRUGO,
- ASUS_OLED_UNDERSCORE_NAME " " ASUS_OLED_VERSION);
-
-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)) {
- pr_err("Error creating " ASUS_OLED_UNDERSCORE_NAME " class\n");
- return PTR_ERR(oled_class);
- }
-
- retval = class_create_file(oled_class, &class_attr_version.attr);
- if (retval) {
- pr_err("Error creating class version file\n");
- goto error;
- }
-
- retval = usb_register(&oled_driver);
-
- if (retval) {
- pr_err("usb_register failed. Error number %d\n", retval);
- goto error;
- }
-
- return retval;
-
-error:
- class_destroy(oled_class);
- return retval;
-}
-
-static void __exit asus_oled_exit(void)
-{
- usb_deregister(&oled_driver);
- class_remove_file(oled_class, &class_attr_version.attr);
- class_destroy(oled_class);
-}
-
-module_init(asus_oled_init);
-module_exit(asus_oled_exit);
-
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff