20633bf014
After updating to 2.6.32 kernel, I started experiencing Oopses caused by the asus_oled module. After quick investigation, I wrapped this simple patch which fixes an Oops in by asus_oled module on 2.6.32.2 kernel, caused by incorrect usage of strict_strtoul function call within set_enabled and set_disabled functions. This can be triggered by simple running the userspace client for asus_old (e.g., 'asusoled -e' or 'asusoled -d'). Signed-off-by: Eugeni Dodonov <eugeni@mandriva.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
811 lines
19 KiB
C
811 lines
19 KiB
C
/*
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* Asus OLED USB driver
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*
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* Copyright (C) 2007,2008 Jakub Schmidtke (sjakub@gmail.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*
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*
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* This module is based on usbled and asus-laptop modules.
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*
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*
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* Asus OLED support is based on asusoled program taken from
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* https://launchpad.net/asusoled/.
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*
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*
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/platform_device.h>
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#include <linux/ctype.h>
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#define ASUS_OLED_VERSION "0.04-dev"
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#define ASUS_OLED_NAME "asus-oled"
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#define ASUS_OLED_UNDERSCORE_NAME "asus_oled"
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#define ASUS_OLED_ERROR "Asus OLED Display Error: "
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#define ASUS_OLED_STATIC 's'
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#define ASUS_OLED_ROLL 'r'
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#define ASUS_OLED_FLASH 'f'
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#define ASUS_OLED_MAX_WIDTH 1792
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#define ASUS_OLED_DISP_HEIGHT 32
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#define ASUS_OLED_PACKET_BUF_SIZE 256
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MODULE_AUTHOR("Jakub Schmidtke, sjakub@gmail.com");
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MODULE_DESCRIPTION("Asus OLED Driver v" ASUS_OLED_VERSION);
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MODULE_LICENSE("GPL");
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static struct class *oled_class;
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static int oled_num;
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static uint start_off;
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module_param(start_off, uint, 0644);
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MODULE_PARM_DESC(start_off,
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"Set to 1 to switch off OLED display after it is attached");
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enum oled_pack_mode{
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PACK_MODE_G1,
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PACK_MODE_G50,
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PACK_MODE_LAST
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};
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struct oled_dev_desc_str {
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uint16_t idVendor;
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uint16_t idProduct;
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/* width of display */
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uint16_t devWidth;
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/* formula to be used while packing the picture */
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enum oled_pack_mode packMode;
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const char *devDesc;
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};
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/* table of devices that work with this driver */
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static struct usb_device_id id_table[] = {
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/* Asus G1/G2 (and variants)*/
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{ USB_DEVICE(0x0b05, 0x1726) },
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/* Asus G50V (and possibly others - G70? G71?)*/
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{ USB_DEVICE(0x0b05, 0x175b) },
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{ },
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};
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/* parameters of specific devices */
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static struct oled_dev_desc_str oled_dev_desc_table[] = {
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{ 0x0b05, 0x1726, 128, PACK_MODE_G1, "G1/G2" },
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{ 0x0b05, 0x175b, 256, PACK_MODE_G50, "G50" },
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{ },
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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struct asus_oled_header {
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uint8_t magic1;
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uint8_t magic2;
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uint8_t flags;
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uint8_t value3;
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uint8_t buffer1;
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uint8_t buffer2;
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uint8_t value6;
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uint8_t value7;
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uint8_t value8;
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uint8_t padding2[7];
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} __attribute((packed));
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struct asus_oled_packet {
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struct asus_oled_header header;
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uint8_t bitmap[ASUS_OLED_PACKET_BUF_SIZE];
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} __attribute((packed));
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struct asus_oled_dev {
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struct usb_device *udev;
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uint8_t pic_mode;
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uint16_t dev_width;
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enum oled_pack_mode pack_mode;
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size_t height;
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size_t width;
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size_t x_shift;
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size_t y_shift;
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size_t buf_offs;
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uint8_t last_val;
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size_t buf_size;
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char *buf;
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uint8_t enabled;
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struct device *dev;
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};
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static void setup_packet_header(struct asus_oled_packet *packet, char flags,
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char value3, char buffer1, char buffer2, char value6,
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char value7, char value8)
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{
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memset(packet, 0, sizeof(struct asus_oled_header));
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packet->header.magic1 = 0x55;
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packet->header.magic2 = 0xaa;
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packet->header.flags = flags;
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packet->header.value3 = value3;
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packet->header.buffer1 = buffer1;
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packet->header.buffer2 = buffer2;
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packet->header.value6 = value6;
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packet->header.value7 = value7;
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packet->header.value8 = value8;
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}
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static void enable_oled(struct asus_oled_dev *odev, uint8_t enabl)
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{
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int a;
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int retval;
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int act_len;
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struct asus_oled_packet *packet;
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packet = kzalloc(sizeof(struct asus_oled_packet), GFP_KERNEL);
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if (!packet) {
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dev_err(&odev->udev->dev, "out of memory\n");
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return;
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}
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setup_packet_header(packet, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00);
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if (enabl)
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packet->bitmap[0] = 0xaf;
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else
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packet->bitmap[0] = 0xae;
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for (a = 0; a < 1; a++) {
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retval = usb_bulk_msg(odev->udev,
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usb_sndbulkpipe(odev->udev, 2),
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packet,
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sizeof(struct asus_oled_header) + 1,
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&act_len,
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-1);
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if (retval)
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dev_dbg(&odev->udev->dev, "retval = %d\n", retval);
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}
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odev->enabled = enabl;
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kfree(packet);
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}
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static ssize_t set_enabled(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct usb_interface *intf = to_usb_interface(dev);
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struct asus_oled_dev *odev = usb_get_intfdata(intf);
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unsigned long value;
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if (strict_strtoul(buf, 10, &value))
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return -EINVAL;
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enable_oled(odev, value);
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return count;
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}
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static ssize_t class_set_enabled(struct device *device,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct asus_oled_dev *odev =
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(struct asus_oled_dev *) dev_get_drvdata(device);
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unsigned long value;
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if (strict_strtoul(buf, 10, &value))
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return -EINVAL;
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enable_oled(odev, value);
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return count;
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}
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static ssize_t get_enabled(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct usb_interface *intf = to_usb_interface(dev);
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struct asus_oled_dev *odev = usb_get_intfdata(intf);
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return sprintf(buf, "%d\n", odev->enabled);
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}
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static ssize_t class_get_enabled(struct device *device,
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struct device_attribute *attr, char *buf)
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{
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struct asus_oled_dev *odev =
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(struct asus_oled_dev *) dev_get_drvdata(device);
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return sprintf(buf, "%d\n", odev->enabled);
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}
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static void send_packets(struct usb_device *udev,
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struct asus_oled_packet *packet,
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char *buf, uint8_t p_type, size_t p_num)
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{
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size_t i;
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int act_len;
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for (i = 0; i < p_num; i++) {
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int retval;
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switch (p_type) {
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case ASUS_OLED_ROLL:
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setup_packet_header(packet, 0x40, 0x80, p_num,
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i + 1, 0x00, 0x01, 0xff);
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break;
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case ASUS_OLED_STATIC:
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setup_packet_header(packet, 0x10 + i, 0x80, 0x01,
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0x01, 0x00, 0x01, 0x00);
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break;
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case ASUS_OLED_FLASH:
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setup_packet_header(packet, 0x10 + i, 0x80, 0x01,
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0x01, 0x00, 0x00, 0xff);
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break;
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}
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memcpy(packet->bitmap, buf + (ASUS_OLED_PACKET_BUF_SIZE*i),
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ASUS_OLED_PACKET_BUF_SIZE);
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retval = usb_bulk_msg(udev, usb_sndctrlpipe(udev, 2),
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packet, sizeof(struct asus_oled_packet),
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&act_len, -1);
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if (retval)
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dev_dbg(&udev->dev, "retval = %d\n", retval);
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}
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}
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static void send_packet(struct usb_device *udev,
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struct asus_oled_packet *packet,
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size_t offset, size_t len, char *buf, uint8_t b1,
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uint8_t b2, uint8_t b3, uint8_t b4, uint8_t b5,
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uint8_t b6) {
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int retval;
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int act_len;
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setup_packet_header(packet, b1, b2, b3, b4, b5, b6, 0x00);
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memcpy(packet->bitmap, buf + offset, len);
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retval = usb_bulk_msg(udev,
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usb_sndctrlpipe(udev, 2),
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packet,
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sizeof(struct asus_oled_packet),
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&act_len,
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-1);
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if (retval)
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dev_dbg(&udev->dev, "retval = %d\n", retval);
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}
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static void send_packets_g50(struct usb_device *udev,
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struct asus_oled_packet *packet, char *buf)
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{
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send_packet(udev, packet, 0, 0x100, buf,
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0x10, 0x00, 0x02, 0x01, 0x00, 0x01);
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send_packet(udev, packet, 0x100, 0x080, buf,
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0x10, 0x00, 0x02, 0x02, 0x80, 0x00);
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send_packet(udev, packet, 0x180, 0x100, buf,
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0x11, 0x00, 0x03, 0x01, 0x00, 0x01);
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send_packet(udev, packet, 0x280, 0x100, buf,
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0x11, 0x00, 0x03, 0x02, 0x00, 0x01);
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send_packet(udev, packet, 0x380, 0x080, buf,
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0x11, 0x00, 0x03, 0x03, 0x80, 0x00);
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}
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static void send_data(struct asus_oled_dev *odev)
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{
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size_t packet_num = odev->buf_size / ASUS_OLED_PACKET_BUF_SIZE;
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struct asus_oled_packet *packet;
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packet = kzalloc(sizeof(struct asus_oled_packet), GFP_KERNEL);
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if (!packet) {
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dev_err(&odev->udev->dev, "out of memory\n");
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return;
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}
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if (odev->pack_mode == PACK_MODE_G1) {
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/* When sending roll-mode data the display updated only
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first packet. I have no idea why, but when static picture
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is sent just before rolling picture everything works fine. */
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if (odev->pic_mode == ASUS_OLED_ROLL)
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send_packets(odev->udev, packet, odev->buf,
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ASUS_OLED_STATIC, 2);
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/* Only ROLL mode can use more than 2 packets.*/
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if (odev->pic_mode != ASUS_OLED_ROLL && packet_num > 2)
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packet_num = 2;
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send_packets(odev->udev, packet, odev->buf,
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odev->pic_mode, packet_num);
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} else if (odev->pack_mode == PACK_MODE_G50) {
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send_packets_g50(odev->udev, packet, odev->buf);
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}
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kfree(packet);
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}
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static int append_values(struct asus_oled_dev *odev, uint8_t val, size_t count)
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{
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while (count-- > 0 && val) {
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size_t x = odev->buf_offs % odev->width;
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size_t y = odev->buf_offs / odev->width;
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size_t i;
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x += odev->x_shift;
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y += odev->y_shift;
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switch (odev->pack_mode) {
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case PACK_MODE_G1:
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/* i = (x/128)*640 + 127 - x + (y/8)*128;
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This one for 128 is the same, but might be better
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for different widths? */
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i = (x/odev->dev_width)*640 +
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odev->dev_width - 1 - x +
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(y/8)*odev->dev_width;
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break;
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case PACK_MODE_G50:
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i = (odev->dev_width - 1 - x)/8 + y*odev->dev_width/8;
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break;
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default:
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i = 0;
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printk(ASUS_OLED_ERROR "Unknown OLED Pack Mode: %d!\n",
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odev->pack_mode);
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break;
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}
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if (i >= odev->buf_size) {
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printk(ASUS_OLED_ERROR "Buffer overflow! Report a bug:"
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"offs: %d >= %d i: %d (x: %d y: %d)\n",
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(int) odev->buf_offs, (int) odev->buf_size,
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(int) i, (int) x, (int) y);
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return -EIO;
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}
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switch (odev->pack_mode) {
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case PACK_MODE_G1:
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odev->buf[i] &= ~(1<<(y%8));
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break;
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case PACK_MODE_G50:
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odev->buf[i] &= ~(1<<(x%8));
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break;
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default:
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/* cannot get here; stops gcc complaining*/
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;
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}
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odev->last_val = val;
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odev->buf_offs++;
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}
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return 0;
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}
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static ssize_t odev_set_picture(struct asus_oled_dev *odev,
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const char *buf, size_t count)
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{
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size_t offs = 0, max_offs;
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|
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if (count < 1)
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return 0;
|
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|
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if (tolower(buf[0]) == 'b') {
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/* binary mode, set the entire memory*/
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|
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size_t i;
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odev->buf_size = (odev->dev_width * ASUS_OLED_DISP_HEIGHT) / 8;
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kfree(odev->buf);
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odev->buf = kmalloc(odev->buf_size, GFP_KERNEL);
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|
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memset(odev->buf, 0xff, odev->buf_size);
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for (i = 1; i < count && i <= 32 * 32; i++) {
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odev->buf[i-1] = buf[i];
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odev->buf_offs = i-1;
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}
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|
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odev->width = odev->dev_width / 8;
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odev->height = ASUS_OLED_DISP_HEIGHT;
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odev->x_shift = 0;
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odev->y_shift = 0;
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odev->last_val = 0;
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|
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send_data(odev);
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return count;
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}
|
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|
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if (buf[0] == '<') {
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size_t i;
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size_t w = 0, h = 0;
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size_t w_mem, h_mem;
|
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|
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if (count < 10 || buf[2] != ':')
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goto error_header;
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|
|
|
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switch (tolower(buf[1])) {
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case ASUS_OLED_STATIC:
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case ASUS_OLED_ROLL:
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case ASUS_OLED_FLASH:
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odev->pic_mode = buf[1];
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break;
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default:
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printk(ASUS_OLED_ERROR "Wrong picture mode: '%c'.\n",
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buf[1]);
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return -EIO;
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break;
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}
|
|
|
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for (i = 3; i < count; ++i) {
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if (buf[i] >= '0' && buf[i] <= '9') {
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w = 10*w + (buf[i] - '0');
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|
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if (w > ASUS_OLED_MAX_WIDTH)
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goto error_width;
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} else if (tolower(buf[i]) == 'x') {
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break;
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} else {
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goto error_width;
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}
|
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}
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|
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for (++i; i < count; ++i) {
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if (buf[i] >= '0' && buf[i] <= '9') {
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h = 10*h + (buf[i] - '0');
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|
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if (h > ASUS_OLED_DISP_HEIGHT)
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goto error_height;
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} else if (tolower(buf[i]) == '>') {
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break;
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} else {
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goto error_height;
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}
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}
|
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|
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if (w < 1 || w > ASUS_OLED_MAX_WIDTH)
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goto error_width;
|
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|
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if (h < 1 || h > ASUS_OLED_DISP_HEIGHT)
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goto error_height;
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|
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if (i >= count || buf[i] != '>')
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goto error_header;
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|
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offs = i+1;
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|
|
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;
|
|
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 = 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:
|
|
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;
|
|
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) {
|
|
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 = 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");
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
retval = class_create_file(oled_class, &class_attr_version);
|
|
if (retval) {
|
|
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);
|
|
|