drivers/hid/hid-picolcd.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /***************************************************************************
   3  *   Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org>  *
   4  *                                                                         *
   5  *   Based on Logitech G13 driver (v0.4)                                   *
   6  *     Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu>   *
   7  *                                                                         *
   8  ***************************************************************************/
   9
  10 #define PICOLCD_NAME "PicoLCD (graphic)"
  11
  12 /* Report numbers */
  13 #define REPORT_ERROR_CODE      0x10 /* LCD: IN[16]  */
  14 #define   ERR_SUCCESS            0x00
  15 #define   ERR_PARAMETER_MISSING  0x01
  16 #define   ERR_DATA_MISSING       0x02
  17 #define   ERR_BLOCK_READ_ONLY    0x03
  18 #define   ERR_BLOCK_NOT_ERASABLE 0x04
  19 #define   ERR_BLOCK_TOO_BIG      0x05
  20 #define   ERR_SECTION_OVERFLOW   0x06
  21 #define   ERR_INVALID_CMD_LEN    0x07
  22 #define   ERR_INVALID_DATA_LEN   0x08
  23 #define REPORT_KEY_STATE       0x11 /* LCD: IN[2]   */
  24 #define REPORT_IR_DATA         0x21 /* LCD: IN[63]  */
  25 #define REPORT_EE_DATA         0x32 /* LCD: IN[63]  */
  26 #define REPORT_MEMORY          0x41 /* LCD: IN[63]  */
  27 #define REPORT_LED_STATE       0x81 /* LCD: OUT[1]  */
  28 #define REPORT_BRIGHTNESS      0x91 /* LCD: OUT[1]  */
  29 #define REPORT_CONTRAST        0x92 /* LCD: OUT[1]  */
  30 #define REPORT_RESET           0x93 /* LCD: OUT[2]  */
  31 #define REPORT_LCD_CMD         0x94 /* LCD: OUT[63] */
  32 #define REPORT_LCD_DATA        0x95 /* LCD: OUT[63] */
  33 #define REPORT_LCD_CMD_DATA    0x96 /* LCD: OUT[63] */
  34 #define REPORT_EE_READ         0xa3 /* LCD: OUT[63] */
  35 #define REPORT_EE_WRITE        0xa4 /* LCD: OUT[63] */
  36 #define REPORT_ERASE_MEMORY    0xb2 /* LCD: OUT[2]  */
  37 #define REPORT_READ_MEMORY     0xb3 /* LCD: OUT[3]  */
  38 #define REPORT_WRITE_MEMORY    0xb4 /* LCD: OUT[63] */
  39 #define REPORT_SPLASH_RESTART  0xc1 /* LCD: OUT[1]  */
  40 #define REPORT_EXIT_KEYBOARD   0xef /* LCD: OUT[2]  */
  41 #define REPORT_VERSION         0xf1 /* LCD: IN[2],OUT[1]    Bootloader: IN[2],OUT[1]   */
  42 #define REPORT_BL_ERASE_MEMORY 0xf2 /*                      Bootloader: IN[36],OUT[4]  */
  43 #define REPORT_BL_READ_MEMORY  0xf3 /*                      Bootloader: IN[36],OUT[4]  */
  44 #define REPORT_BL_WRITE_MEMORY 0xf4 /*                      Bootloader: IN[36],OUT[36] */
  45 #define REPORT_DEVID           0xf5 /* LCD: IN[5], OUT[1]   Bootloader: IN[5],OUT[1]   */
  46 #define REPORT_SPLASH_SIZE     0xf6 /* LCD: IN[4], OUT[1]   */
  47 #define REPORT_HOOK_VERSION    0xf7 /* LCD: IN[2], OUT[1]   */
  48 #define REPORT_EXIT_FLASHER    0xff /*                      Bootloader: OUT[2]         */
  49
  50 /* Description of in-progress IO operation, used for operations
  51  * that trigger response from device */
  52 struct picolcd_pending {
  53         struct hid_report *out_report;
  54         struct hid_report *in_report;
  55         struct completion ready;
  56         int raw_size;
  57         u8 raw_data[64];
  58 };
  59
  60
  61 #define PICOLCD_KEYS 17
  62
  63 /* Per device data structure */
  64 struct picolcd_data {
  65         struct hid_device *hdev;
  66 #ifdef CONFIG_DEBUG_FS
  67         struct dentry *debug_reset;
  68         struct dentry *debug_eeprom;
  69         struct dentry *debug_flash;
  70         struct mutex mutex_flash;
  71         int addr_sz;
  72 #endif
  73         u8 version[2];
  74         unsigned short opmode_delay;
  75         /* input stuff */
  76         u8 pressed_keys[2];
  77         struct input_dev *input_keys;
  78 #ifdef CONFIG_HID_PICOLCD_CIR
  79         struct rc_dev *rc_dev;
  80 #endif
  81         unsigned short keycode[PICOLCD_KEYS];
  82
  83 #ifdef CONFIG_HID_PICOLCD_FB
  84         /* Framebuffer stuff */
  85         struct fb_info *fb_info;
  86 #endif /* CONFIG_HID_PICOLCD_FB */
  87 #ifdef CONFIG_HID_PICOLCD_LCD
  88         struct lcd_device *lcd;
  89         u8 lcd_contrast;
  90 #endif /* CONFIG_HID_PICOLCD_LCD */
  91 #ifdef CONFIG_HID_PICOLCD_BACKLIGHT
  92         struct backlight_device *backlight;
  93         u8 lcd_brightness;
  94         u8 lcd_power;
  95 #endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
  96 #ifdef CONFIG_HID_PICOLCD_LEDS
  97         /* LED stuff */
  98         u8 led_state;
  99         struct led_classdev *led[8];
 100 #endif /* CONFIG_HID_PICOLCD_LEDS */
 101
 102         /* Housekeeping stuff */
 103         spinlock_t lock;
 104         struct mutex mutex;
 105         struct picolcd_pending *pending;
 106         int status;
 107 #define PICOLCD_BOOTLOADER 1
 108 #define PICOLCD_FAILED 2
 109 #define PICOLCD_CIR_SHUN 4
 110 };
 111
 112 #ifdef CONFIG_HID_PICOLCD_FB
 113 struct picolcd_fb_data {
 114         /* Framebuffer stuff */
 115         spinlock_t lock;
 116         struct picolcd_data *picolcd;
 117         u8 update_rate;
 118         u8 bpp;
 119         u8 force;
 120         u8 ready;
 121         u8 *vbitmap;            /* local copy of what was sent to PicoLCD */
 122         u8 *bitmap;             /* framebuffer */
 123 };
 124 #endif /* CONFIG_HID_PICOLCD_FB */
 125
 126 /* Find a given report */
 127 #define picolcd_in_report(id, dev) picolcd_report(id, dev, HID_INPUT_REPORT)
 128 #define picolcd_out_report(id, dev) picolcd_report(id, dev, HID_OUTPUT_REPORT)
 129
 130 struct hid_report *picolcd_report(int id, struct hid_device *hdev, int dir);
 131
 132 #ifdef CONFIG_DEBUG_FS
 133 void picolcd_debug_out_report(struct picolcd_data *data,
 134                 struct hid_device *hdev, struct hid_report *report);
 135 #define hid_hw_request(a, b, c) \
 136         do { \
 137                 picolcd_debug_out_report(hid_get_drvdata(a), a, b); \
 138                 hid_hw_request(a, b, c); \
 139         } while (0)
 140
 141 void picolcd_debug_raw_event(struct picolcd_data *data,
 142                 struct hid_device *hdev, struct hid_report *report,
 143                 u8 *raw_data, int size);
 144
 145 void picolcd_init_devfs(struct picolcd_data *data,
 146                 struct hid_report *eeprom_r, struct hid_report *eeprom_w,
 147                 struct hid_report *flash_r, struct hid_report *flash_w,
 148                 struct hid_report *reset);
 149
 150 void picolcd_exit_devfs(struct picolcd_data *data);
 151 #else
 152 static inline void picolcd_debug_out_report(struct picolcd_data *data,
 153                 struct hid_device *hdev, struct hid_report *report)
 154 {
 155 }
 156 static inline void picolcd_debug_raw_event(struct picolcd_data *data,
 157                 struct hid_device *hdev, struct hid_report *report,
 158                 u8 *raw_data, int size)
 159 {
 160 }
 161 static inline void picolcd_init_devfs(struct picolcd_data *data,
 162                 struct hid_report *eeprom_r, struct hid_report *eeprom_w,
 163                 struct hid_report *flash_r, struct hid_report *flash_w,
 164                 struct hid_report *reset)
 165 {
 166 }
 167 static inline void picolcd_exit_devfs(struct picolcd_data *data)
 168 {
 169 }
 170 #endif /* CONFIG_DEBUG_FS */
 171
 172
 173 #ifdef CONFIG_HID_PICOLCD_FB
 174 int picolcd_fb_reset(struct picolcd_data *data, int clear);
 175
 176 int picolcd_init_framebuffer(struct picolcd_data *data);
 177
 178 void picolcd_exit_framebuffer(struct picolcd_data *data);
 179
 180 void picolcd_fb_refresh(struct picolcd_data *data);
 181 #define picolcd_fbinfo(d) ((d)->fb_info)
 182 #else
 183 static inline int picolcd_fb_reset(struct picolcd_data *data, int clear)
 184 {
 185         return 0;
 186 }
 187 static inline int picolcd_init_framebuffer(struct picolcd_data *data)
 188 {
 189         return 0;
 190 }
 191 static inline void picolcd_exit_framebuffer(struct picolcd_data *data)
 192 {
 193 }
 194 static inline void picolcd_fb_refresh(struct picolcd_data *data)
 195 {
 196 }
 197 #define picolcd_fbinfo(d) NULL
 198 #endif /* CONFIG_HID_PICOLCD_FB */
 199
 200
 201 #ifdef CONFIG_HID_PICOLCD_BACKLIGHT
 202 int picolcd_init_backlight(struct picolcd_data *data,
 203                 struct hid_report *report);
 204
 205 void picolcd_exit_backlight(struct picolcd_data *data);
 206
 207 int picolcd_resume_backlight(struct picolcd_data *data);
 208
 209 void picolcd_suspend_backlight(struct picolcd_data *data);
 210 #else
 211 static inline int picolcd_init_backlight(struct picolcd_data *data,
 212                 struct hid_report *report)
 213 {
 214         return 0;
 215 }
 216 static inline void picolcd_exit_backlight(struct picolcd_data *data)
 217 {
 218 }
 219 static inline int picolcd_resume_backlight(struct picolcd_data *data)
 220 {
 221         return 0;
 222 }
 223 static inline void picolcd_suspend_backlight(struct picolcd_data *data)
 224 {
 225 }
 226
 227 #endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
 228
 229
 230 #ifdef CONFIG_HID_PICOLCD_LCD
 231 int picolcd_init_lcd(struct picolcd_data *data,
 232                 struct hid_report *report);
 233
 234 void picolcd_exit_lcd(struct picolcd_data *data);
 235
 236 int picolcd_resume_lcd(struct picolcd_data *data);
 237 #else
 238 static inline int picolcd_init_lcd(struct picolcd_data *data,
 239                 struct hid_report *report)
 240 {
 241         return 0;
 242 }
 243 static inline void picolcd_exit_lcd(struct picolcd_data *data)
 244 {
 245 }
 246 static inline int picolcd_resume_lcd(struct picolcd_data *data)
 247 {
 248         return 0;
 249 }
 250 #endif /* CONFIG_HID_PICOLCD_LCD */
 251
 252
 253 #ifdef CONFIG_HID_PICOLCD_LEDS
 254 int picolcd_init_leds(struct picolcd_data *data,
 255                 struct hid_report *report);
 256
 257 void picolcd_exit_leds(struct picolcd_data *data);
 258
 259 void picolcd_leds_set(struct picolcd_data *data);
 260 #else
 261 static inline int picolcd_init_leds(struct picolcd_data *data,
 262                 struct hid_report *report)
 263 {
 264         return 0;
 265 }
 266 static inline void picolcd_exit_leds(struct picolcd_data *data)
 267 {
 268 }
 269 static inline void picolcd_leds_set(struct picolcd_data *data)
 270 {
 271 }
 272 #endif /* CONFIG_HID_PICOLCD_LEDS */
 273
 274
 275 #ifdef CONFIG_HID_PICOLCD_CIR
 276 int picolcd_raw_cir(struct picolcd_data *data,
 277                 struct hid_report *report, u8 *raw_data, int size);
 278
 279 int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report);
 280
 281 void picolcd_exit_cir(struct picolcd_data *data);
 282 #else
 283 static inline int picolcd_raw_cir(struct picolcd_data *data,
 284                 struct hid_report *report, u8 *raw_data, int size)
 285 {
 286         return 1;
 287 }
 288 static inline int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report)
 289 {
 290         return 0;
 291 }
 292 static inline void picolcd_exit_cir(struct picolcd_data *data)
 293 {
 294 }
 295 #endif /* CONFIG_HID_PICOLCD_CIR */
 296
 297 int picolcd_reset(struct hid_device *hdev);
 298 struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev,
 299                         int report_id, const u8 *raw_data, int size);