linux/drivers/hid/hid-picolcd.h
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   1/***************************************************************************
   2 *   Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org>  *
   3 *                                                                         *
   4 *   Based on Logitech G13 driver (v0.4)                                   *
   5 *     Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu>   *
   6 *                                                                         *
   7 *   This program is free software: you can redistribute it and/or modify  *
   8 *   it under the terms of the GNU General Public License as published by  *
   9 *   the Free Software Foundation, version 2 of the License.               *
  10 *                                                                         *
  11 *   This driver is distributed in the hope that it will be useful, but    *
  12 *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
  13 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      *
  14 *   General Public License for more details.                              *
  15 *                                                                         *
  16 *   You should have received a copy of the GNU General Public License     *
  17 *   along with this software. If not see <http://www.gnu.org/licenses/>.  *
  18 ***************************************************************************/
  19
  20#define PICOLCD_NAME "PicoLCD (graphic)"
  21
  22/* Report numbers */
  23#define REPORT_ERROR_CODE      0x10 /* LCD: IN[16]  */
  24#define   ERR_SUCCESS            0x00
  25#define   ERR_PARAMETER_MISSING  0x01
  26#define   ERR_DATA_MISSING       0x02
  27#define   ERR_BLOCK_READ_ONLY    0x03
  28#define   ERR_BLOCK_NOT_ERASABLE 0x04
  29#define   ERR_BLOCK_TOO_BIG      0x05
  30#define   ERR_SECTION_OVERFLOW   0x06
  31#define   ERR_INVALID_CMD_LEN    0x07
  32#define   ERR_INVALID_DATA_LEN   0x08
  33#define REPORT_KEY_STATE       0x11 /* LCD: IN[2]   */
  34#define REPORT_IR_DATA         0x21 /* LCD: IN[63]  */
  35#define REPORT_EE_DATA         0x32 /* LCD: IN[63]  */
  36#define REPORT_MEMORY          0x41 /* LCD: IN[63]  */
  37#define REPORT_LED_STATE       0x81 /* LCD: OUT[1]  */
  38#define REPORT_BRIGHTNESS      0x91 /* LCD: OUT[1]  */
  39#define REPORT_CONTRAST        0x92 /* LCD: OUT[1]  */
  40#define REPORT_RESET           0x93 /* LCD: OUT[2]  */
  41#define REPORT_LCD_CMD         0x94 /* LCD: OUT[63] */
  42#define REPORT_LCD_DATA        0x95 /* LCD: OUT[63] */
  43#define REPORT_LCD_CMD_DATA    0x96 /* LCD: OUT[63] */
  44#define REPORT_EE_READ         0xa3 /* LCD: OUT[63] */
  45#define REPORT_EE_WRITE        0xa4 /* LCD: OUT[63] */
  46#define REPORT_ERASE_MEMORY    0xb2 /* LCD: OUT[2]  */
  47#define REPORT_READ_MEMORY     0xb3 /* LCD: OUT[3]  */
  48#define REPORT_WRITE_MEMORY    0xb4 /* LCD: OUT[63] */
  49#define REPORT_SPLASH_RESTART  0xc1 /* LCD: OUT[1]  */
  50#define REPORT_EXIT_KEYBOARD   0xef /* LCD: OUT[2]  */
  51#define REPORT_VERSION         0xf1 /* LCD: IN[2],OUT[1]    Bootloader: IN[2],OUT[1]   */
  52#define REPORT_BL_ERASE_MEMORY 0xf2 /*                      Bootloader: IN[36],OUT[4]  */
  53#define REPORT_BL_READ_MEMORY  0xf3 /*                      Bootloader: IN[36],OUT[4]  */
  54#define REPORT_BL_WRITE_MEMORY 0xf4 /*                      Bootloader: IN[36],OUT[36] */
  55#define REPORT_DEVID           0xf5 /* LCD: IN[5], OUT[1]   Bootloader: IN[5],OUT[1]   */
  56#define REPORT_SPLASH_SIZE     0xf6 /* LCD: IN[4], OUT[1]   */
  57#define REPORT_HOOK_VERSION    0xf7 /* LCD: IN[2], OUT[1]   */
  58#define REPORT_EXIT_FLASHER    0xff /*                      Bootloader: OUT[2]         */
  59
  60/* Description of in-progress IO operation, used for operations
  61 * that trigger response from device */
  62struct picolcd_pending {
  63        struct hid_report *out_report;
  64        struct hid_report *in_report;
  65        struct completion ready;
  66        int raw_size;
  67        u8 raw_data[64];
  68};
  69
  70
  71#define PICOLCD_KEYS 17
  72
  73/* Per device data structure */
  74struct picolcd_data {
  75        struct hid_device *hdev;
  76#ifdef CONFIG_DEBUG_FS
  77        struct dentry *debug_reset;
  78        struct dentry *debug_eeprom;
  79        struct dentry *debug_flash;
  80        struct mutex mutex_flash;
  81        int addr_sz;
  82#endif
  83        u8 version[2];
  84        unsigned short opmode_delay;
  85        /* input stuff */
  86        u8 pressed_keys[2];
  87        struct input_dev *input_keys;
  88#ifdef CONFIG_HID_PICOLCD_CIR
  89        struct rc_dev *rc_dev;
  90#endif
  91        unsigned short keycode[PICOLCD_KEYS];
  92
  93#ifdef CONFIG_HID_PICOLCD_FB
  94        /* Framebuffer stuff */
  95        struct fb_info *fb_info;
  96#endif /* CONFIG_HID_PICOLCD_FB */
  97#ifdef CONFIG_HID_PICOLCD_LCD
  98        struct lcd_device *lcd;
  99        u8 lcd_contrast;
 100#endif /* CONFIG_HID_PICOLCD_LCD */
 101#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
 102        struct backlight_device *backlight;
 103        u8 lcd_brightness;
 104        u8 lcd_power;
 105#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
 106#ifdef CONFIG_HID_PICOLCD_LEDS
 107        /* LED stuff */
 108        u8 led_state;
 109        struct led_classdev *led[8];
 110#endif /* CONFIG_HID_PICOLCD_LEDS */
 111
 112        /* Housekeeping stuff */
 113        spinlock_t lock;
 114        struct mutex mutex;
 115        struct picolcd_pending *pending;
 116        int status;
 117#define PICOLCD_BOOTLOADER 1
 118#define PICOLCD_FAILED 2
 119#define PICOLCD_CIR_SHUN 4
 120};
 121
 122#ifdef CONFIG_HID_PICOLCD_FB
 123struct picolcd_fb_data {
 124        /* Framebuffer stuff */
 125        spinlock_t lock;
 126        struct picolcd_data *picolcd;
 127        u8 update_rate;
 128        u8 bpp;
 129        u8 force;
 130        u8 ready;
 131        u8 *vbitmap;            /* local copy of what was sent to PicoLCD */
 132        u8 *bitmap;             /* framebuffer */
 133};
 134#endif /* CONFIG_HID_PICOLCD_FB */
 135
 136/* Find a given report */
 137#define picolcd_in_report(id, dev) picolcd_report(id, dev, HID_INPUT_REPORT)
 138#define picolcd_out_report(id, dev) picolcd_report(id, dev, HID_OUTPUT_REPORT)
 139
 140struct hid_report *picolcd_report(int id, struct hid_device *hdev, int dir);
 141
 142#ifdef CONFIG_DEBUG_FS
 143void picolcd_debug_out_report(struct picolcd_data *data,
 144                struct hid_device *hdev, struct hid_report *report);
 145#define usbhid_submit_report(a, b, c) \
 146        do { \
 147                picolcd_debug_out_report(hid_get_drvdata(a), a, b); \
 148                usbhid_submit_report(a, b, c); \
 149        } while (0)
 150
 151void picolcd_debug_raw_event(struct picolcd_data *data,
 152                struct hid_device *hdev, struct hid_report *report,
 153                u8 *raw_data, int size);
 154
 155void picolcd_init_devfs(struct picolcd_data *data,
 156                struct hid_report *eeprom_r, struct hid_report *eeprom_w,
 157                struct hid_report *flash_r, struct hid_report *flash_w,
 158                struct hid_report *reset);
 159
 160void picolcd_exit_devfs(struct picolcd_data *data);
 161#else
 162static inline void picolcd_debug_out_report(struct picolcd_data *data,
 163                struct hid_device *hdev, struct hid_report *report)
 164{
 165}
 166static inline void picolcd_debug_raw_event(struct picolcd_data *data,
 167                struct hid_device *hdev, struct hid_report *report,
 168                u8 *raw_data, int size)
 169{
 170}
 171static inline void picolcd_init_devfs(struct picolcd_data *data,
 172                struct hid_report *eeprom_r, struct hid_report *eeprom_w,
 173                struct hid_report *flash_r, struct hid_report *flash_w,
 174                struct hid_report *reset)
 175{
 176}
 177static inline void picolcd_exit_devfs(struct picolcd_data *data)
 178{
 179}
 180#endif /* CONFIG_DEBUG_FS */
 181
 182
 183#ifdef CONFIG_HID_PICOLCD_FB
 184int picolcd_fb_reset(struct picolcd_data *data, int clear);
 185
 186int picolcd_init_framebuffer(struct picolcd_data *data);
 187
 188void picolcd_exit_framebuffer(struct picolcd_data *data);
 189
 190void picolcd_fb_refresh(struct picolcd_data *data);
 191#define picolcd_fbinfo(d) ((d)->fb_info)
 192#else
 193static inline int picolcd_fb_reset(struct picolcd_data *data, int clear)
 194{
 195        return 0;
 196}
 197static inline int picolcd_init_framebuffer(struct picolcd_data *data)
 198{
 199        return 0;
 200}
 201static inline void picolcd_exit_framebuffer(struct picolcd_data *data)
 202{
 203}
 204static inline void picolcd_fb_refresh(struct picolcd_data *data)
 205{
 206}
 207#define picolcd_fbinfo(d) NULL
 208#endif /* CONFIG_HID_PICOLCD_FB */
 209
 210
 211#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
 212int picolcd_init_backlight(struct picolcd_data *data,
 213                struct hid_report *report);
 214
 215void picolcd_exit_backlight(struct picolcd_data *data);
 216
 217int picolcd_resume_backlight(struct picolcd_data *data);
 218
 219void picolcd_suspend_backlight(struct picolcd_data *data);
 220#else
 221static inline int picolcd_init_backlight(struct picolcd_data *data,
 222                struct hid_report *report)
 223{
 224        return 0;
 225}
 226static inline void picolcd_exit_backlight(struct picolcd_data *data)
 227{
 228}
 229static inline int picolcd_resume_backlight(struct picolcd_data *data)
 230{
 231        return 0;
 232}
 233static inline void picolcd_suspend_backlight(struct picolcd_data *data)
 234{
 235}
 236
 237#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
 238
 239
 240#ifdef CONFIG_HID_PICOLCD_LCD
 241int picolcd_init_lcd(struct picolcd_data *data,
 242                struct hid_report *report);
 243
 244void picolcd_exit_lcd(struct picolcd_data *data);
 245
 246int picolcd_resume_lcd(struct picolcd_data *data);
 247#else
 248static inline int picolcd_init_lcd(struct picolcd_data *data,
 249                struct hid_report *report)
 250{
 251        return 0;
 252}
 253static inline void picolcd_exit_lcd(struct picolcd_data *data)
 254{
 255}
 256static inline int picolcd_resume_lcd(struct picolcd_data *data)
 257{
 258        return 0;
 259}
 260#endif /* CONFIG_HID_PICOLCD_LCD */
 261
 262
 263#ifdef CONFIG_HID_PICOLCD_LEDS
 264int picolcd_init_leds(struct picolcd_data *data,
 265                struct hid_report *report);
 266
 267void picolcd_exit_leds(struct picolcd_data *data);
 268
 269void picolcd_leds_set(struct picolcd_data *data);
 270#else
 271static inline int picolcd_init_leds(struct picolcd_data *data,
 272                struct hid_report *report)
 273{
 274        return 0;
 275}
 276static inline void picolcd_exit_leds(struct picolcd_data *data)
 277{
 278}
 279static inline void picolcd_leds_set(struct picolcd_data *data)
 280{
 281}
 282#endif /* CONFIG_HID_PICOLCD_LEDS */
 283
 284
 285#ifdef CONFIG_HID_PICOLCD_CIR
 286int picolcd_raw_cir(struct picolcd_data *data,
 287                struct hid_report *report, u8 *raw_data, int size);
 288
 289int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report);
 290
 291void picolcd_exit_cir(struct picolcd_data *data);
 292#else
 293static inline int picolcd_raw_cir(struct picolcd_data *data,
 294                struct hid_report *report, u8 *raw_data, int size)
 295{
 296        return 1;
 297}
 298static inline int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report)
 299{
 300        return 0;
 301}
 302static inline void picolcd_exit_cir(struct picolcd_data *data)
 303{
 304}
 305#endif /* CONFIG_HID_PICOLCD_LIRC */
 306
 307int picolcd_reset(struct hid_device *hdev);
 308struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev,
 309                        int report_id, const u8 *raw_data, int size);
 310
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