--- /dev/null
+
+ Driver for Asus OLED display present in some Asus laptops.
+
+ The code of this driver is based on 'asusoled' program taken from
+ https://launchpad.net/asusoled/. 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.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
+ * 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);
+
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff