300 lines · c
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 0x0015#define ERR_PARAMETER_MISSING 0x0116#define ERR_DATA_MISSING 0x0217#define ERR_BLOCK_READ_ONLY 0x0318#define ERR_BLOCK_NOT_ERASABLE 0x0419#define ERR_BLOCK_TOO_BIG 0x0520#define ERR_SECTION_OVERFLOW 0x0621#define ERR_INVALID_CMD_LEN 0x0722#define ERR_INVALID_DATA_LEN 0x0823#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 operations51 * that trigger response from device */52struct 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 1762 63/* Per device data structure */64struct picolcd_data {65 struct hid_device *hdev;66#ifdef CONFIG_DEBUG_FS67 struct dentry *debug_reset;68 struct dentry *debug_eeprom;69 struct dentry *debug_flash;70 struct mutex mutex_flash;71 int addr_sz;72#endif73 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_CIR79 struct rc_dev *rc_dev;80#endif81 unsigned short keycode[PICOLCD_KEYS];82 83#ifdef CONFIG_HID_PICOLCD_FB84 /* Framebuffer stuff */85 struct fb_info *fb_info;86#endif /* CONFIG_HID_PICOLCD_FB */87#ifdef CONFIG_HID_PICOLCD_LCD88 struct lcd_device *lcd;89 u8 lcd_contrast;90#endif /* CONFIG_HID_PICOLCD_LCD */91#ifdef CONFIG_HID_PICOLCD_BACKLIGHT92 struct backlight_device *backlight;93 u8 lcd_brightness;94 u8 lcd_power;95#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */96#ifdef CONFIG_HID_PICOLCD_LEDS97 /* 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 1108#define PICOLCD_FAILED 2109#define PICOLCD_CIR_SHUN 4110};111 112#ifdef CONFIG_HID_PICOLCD_FB113struct 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 130struct hid_report *picolcd_report(int id, struct hid_device *hdev, int dir);131 132#ifdef CONFIG_DEBUG_FS133void 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 141void picolcd_debug_raw_event(struct picolcd_data *data,142 struct hid_device *hdev, struct hid_report *report,143 u8 *raw_data, int size);144 145void 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 150void picolcd_exit_devfs(struct picolcd_data *data);151#else152static inline void picolcd_debug_out_report(struct picolcd_data *data,153 struct hid_device *hdev, struct hid_report *report)154{155}156static 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}161static 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}167static inline void picolcd_exit_devfs(struct picolcd_data *data)168{169}170#endif /* CONFIG_DEBUG_FS */171 172 173#ifdef CONFIG_HID_PICOLCD_FB174int picolcd_fb_reset(struct picolcd_data *data, int clear);175 176int picolcd_init_framebuffer(struct picolcd_data *data);177 178void picolcd_exit_framebuffer(struct picolcd_data *data);179 180void picolcd_fb_refresh(struct picolcd_data *data);181#define picolcd_fbinfo(d) ((d)->fb_info)182#else183static inline int picolcd_fb_reset(struct picolcd_data *data, int clear)184{185 return 0;186}187static inline int picolcd_init_framebuffer(struct picolcd_data *data)188{189 return 0;190}191static inline void picolcd_exit_framebuffer(struct picolcd_data *data)192{193}194static inline void picolcd_fb_refresh(struct picolcd_data *data)195{196}197#define picolcd_fbinfo(d) NULL198#endif /* CONFIG_HID_PICOLCD_FB */199 200 201#ifdef CONFIG_HID_PICOLCD_BACKLIGHT202int picolcd_init_backlight(struct picolcd_data *data,203 struct hid_report *report);204 205void picolcd_exit_backlight(struct picolcd_data *data);206 207int picolcd_resume_backlight(struct picolcd_data *data);208 209void picolcd_suspend_backlight(struct picolcd_data *data);210#else211static inline int picolcd_init_backlight(struct picolcd_data *data,212 struct hid_report *report)213{214 return 0;215}216static inline void picolcd_exit_backlight(struct picolcd_data *data)217{218}219static inline int picolcd_resume_backlight(struct picolcd_data *data)220{221 return 0;222}223static 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_LCD231int picolcd_init_lcd(struct picolcd_data *data,232 struct hid_report *report);233 234void picolcd_exit_lcd(struct picolcd_data *data);235 236int picolcd_resume_lcd(struct picolcd_data *data);237#else238static inline int picolcd_init_lcd(struct picolcd_data *data,239 struct hid_report *report)240{241 return 0;242}243static inline void picolcd_exit_lcd(struct picolcd_data *data)244{245}246static 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_LEDS254int picolcd_init_leds(struct picolcd_data *data,255 struct hid_report *report);256 257void picolcd_exit_leds(struct picolcd_data *data);258 259void picolcd_leds_set(struct picolcd_data *data);260#else261static inline int picolcd_init_leds(struct picolcd_data *data,262 struct hid_report *report)263{264 return 0;265}266static inline void picolcd_exit_leds(struct picolcd_data *data)267{268}269static inline void picolcd_leds_set(struct picolcd_data *data)270{271}272#endif /* CONFIG_HID_PICOLCD_LEDS */273 274 275#ifdef CONFIG_HID_PICOLCD_CIR276int picolcd_raw_cir(struct picolcd_data *data,277 struct hid_report *report, u8 *raw_data, int size);278 279int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report);280 281void picolcd_exit_cir(struct picolcd_data *data);282#else283static inline int picolcd_raw_cir(struct picolcd_data *data,284 struct hid_report *report, u8 *raw_data, int size)285{286 return 1;287}288static inline int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report)289{290 return 0;291}292static inline void picolcd_exit_cir(struct picolcd_data *data)293{294}295#endif /* CONFIG_HID_PICOLCD_CIR */296 297int picolcd_reset(struct hid_device *hdev);298struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev,299 int report_id, const u8 *raw_data, int size);300