| /*************************************************************************** |
| * Copyright (C) 2010 by Bruno Prémont <bonbons@linux-vserver.org> * |
| * * |
| * Based on Logitech G13 driver (v0.4) * |
| * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> * |
| * * |
| * 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, version 2 of the License. * |
| * * |
| * This driver 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 software. If not see <http://www.gnu.org/licenses/>. * |
| ***************************************************************************/ |
| |
| #include <linux/hid.h> |
| #include <linux/hid-debug.h> |
| #include <linux/input.h> |
| #include "hid-ids.h" |
| #include "usbhid/usbhid.h" |
| #include <linux/usb.h> |
| |
| #include <linux/seq_file.h> |
| #include <linux/debugfs.h> |
| |
| #include <linux/completion.h> |
| |
| #define PICOLCD_NAME "PicoLCD (graphic)" |
| |
| /* Report numbers */ |
| #define REPORT_ERROR_CODE 0x10 /* LCD: IN[16] */ |
| #define ERR_SUCCESS 0x00 |
| #define ERR_PARAMETER_MISSING 0x01 |
| #define ERR_DATA_MISSING 0x02 |
| #define ERR_BLOCK_READ_ONLY 0x03 |
| #define ERR_BLOCK_NOT_ERASABLE 0x04 |
| #define ERR_BLOCK_TOO_BIG 0x05 |
| #define ERR_SECTION_OVERFLOW 0x06 |
| #define ERR_INVALID_CMD_LEN 0x07 |
| #define ERR_INVALID_DATA_LEN 0x08 |
| #define REPORT_KEY_STATE 0x11 /* LCD: IN[2] */ |
| #define REPORT_IR_DATA 0x21 /* LCD: IN[63] */ |
| #define REPORT_EE_DATA 0x32 /* LCD: IN[63] */ |
| #define REPORT_MEMORY 0x41 /* LCD: IN[63] */ |
| #define REPORT_LED_STATE 0x81 /* LCD: OUT[1] */ |
| #define REPORT_BRIGHTNESS 0x91 /* LCD: OUT[1] */ |
| #define REPORT_CONTRAST 0x92 /* LCD: OUT[1] */ |
| #define REPORT_RESET 0x93 /* LCD: OUT[2] */ |
| #define REPORT_LCD_CMD 0x94 /* LCD: OUT[63] */ |
| #define REPORT_LCD_DATA 0x95 /* LCD: OUT[63] */ |
| #define REPORT_LCD_CMD_DATA 0x96 /* LCD: OUT[63] */ |
| #define REPORT_EE_READ 0xa3 /* LCD: OUT[63] */ |
| #define REPORT_EE_WRITE 0xa4 /* LCD: OUT[63] */ |
| #define REPORT_ERASE_MEMORY 0xb2 /* LCD: OUT[2] */ |
| #define REPORT_READ_MEMORY 0xb3 /* LCD: OUT[3] */ |
| #define REPORT_WRITE_MEMORY 0xb4 /* LCD: OUT[63] */ |
| #define REPORT_SPLASH_RESTART 0xc1 /* LCD: OUT[1] */ |
| #define REPORT_EXIT_KEYBOARD 0xef /* LCD: OUT[2] */ |
| #define REPORT_VERSION 0xf1 /* LCD: IN[2],OUT[1] Bootloader: IN[2],OUT[1] */ |
| #define REPORT_BL_ERASE_MEMORY 0xf2 /* Bootloader: IN[36],OUT[4] */ |
| #define REPORT_BL_READ_MEMORY 0xf3 /* Bootloader: IN[36],OUT[4] */ |
| #define REPORT_BL_WRITE_MEMORY 0xf4 /* Bootloader: IN[36],OUT[36] */ |
| #define REPORT_DEVID 0xf5 /* LCD: IN[5], OUT[1] Bootloader: IN[5],OUT[1] */ |
| #define REPORT_SPLASH_SIZE 0xf6 /* LCD: IN[4], OUT[1] */ |
| #define REPORT_HOOK_VERSION 0xf7 /* LCD: IN[2], OUT[1] */ |
| #define REPORT_EXIT_FLASHER 0xff /* Bootloader: OUT[2] */ |
| |
| /* Input device |
| * |
| * The PicoLCD has an IR receiver header, a built-in keypad with 5 keys |
| * and header for 4x4 key matrix. The built-in keys are part of the matrix. |
| */ |
| static const unsigned short def_keymap[] = { |
| KEY_RESERVED, /* none */ |
| KEY_BACK, /* col 4 + row 1 */ |
| KEY_HOMEPAGE, /* col 3 + row 1 */ |
| KEY_RESERVED, /* col 2 + row 1 */ |
| KEY_RESERVED, /* col 1 + row 1 */ |
| KEY_SCROLLUP, /* col 4 + row 2 */ |
| KEY_OK, /* col 3 + row 2 */ |
| KEY_SCROLLDOWN, /* col 2 + row 2 */ |
| KEY_RESERVED, /* col 1 + row 2 */ |
| KEY_RESERVED, /* col 4 + row 3 */ |
| KEY_RESERVED, /* col 3 + row 3 */ |
| KEY_RESERVED, /* col 2 + row 3 */ |
| KEY_RESERVED, /* col 1 + row 3 */ |
| KEY_RESERVED, /* col 4 + row 4 */ |
| KEY_RESERVED, /* col 3 + row 4 */ |
| KEY_RESERVED, /* col 2 + row 4 */ |
| KEY_RESERVED, /* col 1 + row 4 */ |
| }; |
| #define PICOLCD_KEYS ARRAY_SIZE(def_keymap) |
| |
| /* Description of in-progress IO operation, used for operations |
| * that trigger response from device */ |
| struct picolcd_pending { |
| struct hid_report *out_report; |
| struct hid_report *in_report; |
| struct completion ready; |
| int raw_size; |
| u8 raw_data[64]; |
| }; |
| |
| /* Per device data structure */ |
| struct picolcd_data { |
| struct hid_device *hdev; |
| #ifdef CONFIG_DEBUG_FS |
| int addr_sz; |
| #endif |
| u8 version[2]; |
| /* input stuff */ |
| u8 pressed_keys[2]; |
| struct input_dev *input_keys; |
| struct input_dev *input_cir; |
| unsigned short keycode[PICOLCD_KEYS]; |
| |
| /* Housekeeping stuff */ |
| spinlock_t lock; |
| struct mutex mutex; |
| struct picolcd_pending *pending; |
| int status; |
| #define PICOLCD_BOOTLOADER 1 |
| #define PICOLCD_FAILED 2 |
| }; |
| |
| |
| /* Find a given report */ |
| #define picolcd_in_report(id, dev) picolcd_report(id, dev, HID_INPUT_REPORT) |
| #define picolcd_out_report(id, dev) picolcd_report(id, dev, HID_OUTPUT_REPORT) |
| |
| static struct hid_report *picolcd_report(int id, struct hid_device *hdev, int dir) |
| { |
| struct list_head *feature_report_list = &hdev->report_enum[dir].report_list; |
| struct hid_report *report = NULL; |
| |
| list_for_each_entry(report, feature_report_list, list) { |
| if (report->id == id) |
| return report; |
| } |
| dev_warn(&hdev->dev, "No report with id 0x%x found\n", id); |
| return NULL; |
| } |
| |
| #ifdef CONFIG_DEBUG_FS |
| static void picolcd_debug_out_report(struct picolcd_data *data, |
| struct hid_device *hdev, struct hid_report *report); |
| #define usbhid_submit_report(a, b, c) \ |
| do { \ |
| picolcd_debug_out_report(hid_get_drvdata(a), a, b); \ |
| usbhid_submit_report(a, b, c); \ |
| } while (0) |
| #endif |
| |
| /* Submit a report and wait for a reply from device - if device fades away |
| * or does not respond in time, return NULL */ |
| static struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev, |
| int report_id, const u8 *raw_data, int size) |
| { |
| struct picolcd_data *data = hid_get_drvdata(hdev); |
| struct picolcd_pending *work; |
| struct hid_report *report = picolcd_out_report(report_id, hdev); |
| unsigned long flags; |
| int i, j, k; |
| |
| if (!report || !data) |
| return NULL; |
| if (data->status & PICOLCD_FAILED) |
| return NULL; |
| work = kzalloc(sizeof(*work), GFP_KERNEL); |
| if (!work) |
| return NULL; |
| |
| init_completion(&work->ready); |
| work->out_report = report; |
| work->in_report = NULL; |
| work->raw_size = 0; |
| |
| mutex_lock(&data->mutex); |
| spin_lock_irqsave(&data->lock, flags); |
| for (i = k = 0; i < report->maxfield; i++) |
| for (j = 0; j < report->field[i]->report_count; j++) { |
| hid_set_field(report->field[i], j, k < size ? raw_data[k] : 0); |
| k++; |
| } |
| data->pending = work; |
| usbhid_submit_report(data->hdev, report, USB_DIR_OUT); |
| spin_unlock_irqrestore(&data->lock, flags); |
| wait_for_completion_interruptible_timeout(&work->ready, HZ*2); |
| spin_lock_irqsave(&data->lock, flags); |
| data->pending = NULL; |
| spin_unlock_irqrestore(&data->lock, flags); |
| mutex_unlock(&data->mutex); |
| return work; |
| } |
| |
| /* |
| * input class device |
| */ |
| static int picolcd_raw_keypad(struct picolcd_data *data, |
| struct hid_report *report, u8 *raw_data, int size) |
| { |
| /* |
| * Keypad event |
| * First and second data bytes list currently pressed keys, |
| * 0x00 means no key and at most 2 keys may be pressed at same time |
| */ |
| int i, j; |
| |
| /* determine newly pressed keys */ |
| for (i = 0; i < size; i++) { |
| unsigned int key_code; |
| if (raw_data[i] == 0) |
| continue; |
| for (j = 0; j < sizeof(data->pressed_keys); j++) |
| if (data->pressed_keys[j] == raw_data[i]) |
| goto key_already_down; |
| for (j = 0; j < sizeof(data->pressed_keys); j++) |
| if (data->pressed_keys[j] == 0) { |
| data->pressed_keys[j] = raw_data[i]; |
| break; |
| } |
| input_event(data->input_keys, EV_MSC, MSC_SCAN, raw_data[i]); |
| if (raw_data[i] < PICOLCD_KEYS) |
| key_code = data->keycode[raw_data[i]]; |
| else |
| key_code = KEY_UNKNOWN; |
| if (key_code != KEY_UNKNOWN) { |
| dbg_hid(PICOLCD_NAME " got key press for %u:%d", |
| raw_data[i], key_code); |
| input_report_key(data->input_keys, key_code, 1); |
| } |
| input_sync(data->input_keys); |
| key_already_down: |
| continue; |
| } |
| |
| /* determine newly released keys */ |
| for (j = 0; j < sizeof(data->pressed_keys); j++) { |
| unsigned int key_code; |
| if (data->pressed_keys[j] == 0) |
| continue; |
| for (i = 0; i < size; i++) |
| if (data->pressed_keys[j] == raw_data[i]) |
| goto key_still_down; |
| input_event(data->input_keys, EV_MSC, MSC_SCAN, data->pressed_keys[j]); |
| if (data->pressed_keys[j] < PICOLCD_KEYS) |
| key_code = data->keycode[data->pressed_keys[j]]; |
| else |
| key_code = KEY_UNKNOWN; |
| if (key_code != KEY_UNKNOWN) { |
| dbg_hid(PICOLCD_NAME " got key release for %u:%d", |
| data->pressed_keys[j], key_code); |
| input_report_key(data->input_keys, key_code, 0); |
| } |
| input_sync(data->input_keys); |
| data->pressed_keys[j] = 0; |
| key_still_down: |
| continue; |
| } |
| return 1; |
| } |
| |
| static int picolcd_raw_cir(struct picolcd_data *data, |
| struct hid_report *report, u8 *raw_data, int size) |
| { |
| /* Need understanding of CIR data format to implement ... */ |
| return 1; |
| } |
| |
| static int picolcd_check_version(struct hid_device *hdev) |
| { |
| struct picolcd_data *data = hid_get_drvdata(hdev); |
| struct picolcd_pending *verinfo; |
| int ret = 0; |
| |
| if (!data) |
| return -ENODEV; |
| |
| verinfo = picolcd_send_and_wait(hdev, REPORT_VERSION, NULL, 0); |
| if (!verinfo) { |
| dev_err(&hdev->dev, "no version response from PicoLCD"); |
| return -ENODEV; |
| } |
| |
| if (verinfo->raw_size == 2) { |
| if (data->status & PICOLCD_BOOTLOADER) { |
| dev_info(&hdev->dev, "PicoLCD, bootloader version %d.%d\n", |
| verinfo->raw_data[0], verinfo->raw_data[1]); |
| data->version[0] = verinfo->raw_data[0]; |
| data->version[1] = verinfo->raw_data[1]; |
| } else { |
| dev_info(&hdev->dev, "PicoLCD, firmware version %d.%d\n", |
| verinfo->raw_data[1], verinfo->raw_data[0]); |
| data->version[0] = verinfo->raw_data[1]; |
| data->version[1] = verinfo->raw_data[0]; |
| } |
| } else { |
| dev_err(&hdev->dev, "confused, got unexpected version response from PicoLCD\n"); |
| ret = -EINVAL; |
| } |
| kfree(verinfo); |
| return ret; |
| } |
| |
| /* |
| * Reset our device and wait for answer to VERSION request |
| */ |
| static int picolcd_reset(struct hid_device *hdev) |
| { |
| struct picolcd_data *data = hid_get_drvdata(hdev); |
| struct hid_report *report = picolcd_out_report(REPORT_RESET, hdev); |
| unsigned long flags; |
| |
| if (!data || !report || report->maxfield != 1) |
| return -ENODEV; |
| |
| spin_lock_irqsave(&data->lock, flags); |
| if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER) |
| data->status |= PICOLCD_BOOTLOADER; |
| |
| /* perform the reset */ |
| hid_set_field(report->field[0], 0, 1); |
| usbhid_submit_report(hdev, report, USB_DIR_OUT); |
| spin_unlock_irqrestore(&data->lock, flags); |
| |
| return picolcd_check_version(hdev); |
| } |
| |
| /* |
| * The "operation_mode" sysfs attribute |
| */ |
| static ssize_t picolcd_operation_mode_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct picolcd_data *data = dev_get_drvdata(dev); |
| |
| if (data->status & PICOLCD_BOOTLOADER) |
| return snprintf(buf, PAGE_SIZE, "[bootloader] lcd\n"); |
| else |
| return snprintf(buf, PAGE_SIZE, "bootloader [lcd]\n"); |
| } |
| |
| static ssize_t picolcd_operation_mode_store(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct picolcd_data *data = dev_get_drvdata(dev); |
| struct hid_report *report = NULL; |
| size_t cnt = count; |
| int timeout = 5000; |
| unsigned u; |
| unsigned long flags; |
| |
| if (cnt >= 3 && strncmp("lcd", buf, 3) == 0) { |
| if (data->status & PICOLCD_BOOTLOADER) |
| report = picolcd_out_report(REPORT_EXIT_FLASHER, data->hdev); |
| buf += 3; |
| cnt -= 3; |
| } else if (cnt >= 10 && strncmp("bootloader", buf, 10) == 0) { |
| if (!(data->status & PICOLCD_BOOTLOADER)) |
| report = picolcd_out_report(REPORT_EXIT_KEYBOARD, data->hdev); |
| buf += 10; |
| cnt -= 10; |
| } |
| if (!report) |
| return -EINVAL; |
| |
| while (cnt > 0 && (*buf == ' ' || *buf == '\t')) { |
| buf++; |
| cnt--; |
| } |
| while (cnt > 0 && (buf[cnt-1] == '\n' || buf[cnt-1] == '\r')) |
| cnt--; |
| if (cnt > 0) { |
| if (sscanf(buf, "%u", &u) != 1) |
| return -EINVAL; |
| if (u > 30000) |
| return -EINVAL; |
| else |
| timeout = u; |
| } |
| |
| spin_lock_irqsave(&data->lock, flags); |
| hid_set_field(report->field[0], 0, timeout & 0xff); |
| hid_set_field(report->field[0], 1, (timeout >> 8) & 0xff); |
| usbhid_submit_report(data->hdev, report, USB_DIR_OUT); |
| spin_unlock_irqrestore(&data->lock, flags); |
| return count; |
| } |
| |
| static DEVICE_ATTR(operation_mode, 0644, picolcd_operation_mode_show, |
| picolcd_operation_mode_store); |
| |
| |
| #ifdef CONFIG_DEBUG_FS |
| /* |
| * Helper code for HID report level dumping/debugging |
| */ |
| static const char *error_codes[] = { |
| "success", "parameter missing", "data_missing", "block readonly", |
| "block not erasable", "block too big", "section overflow", |
| "invalid command length", "invalid data length", |
| }; |
| |
| static void dump_buff_as_hex(char *dst, size_t dst_sz, const u8 *data, |
| const size_t data_len) |
| { |
| int i, j; |
| for (i = j = 0; i < data_len && j + 3 < dst_sz; i++) { |
| dst[j++] = hex_asc[(data[i] >> 4) & 0x0f]; |
| dst[j++] = hex_asc[data[i] & 0x0f]; |
| dst[j++] = ' '; |
| } |
| if (j < dst_sz) { |
| dst[j--] = '\0'; |
| dst[j] = '\n'; |
| } else |
| dst[j] = '\0'; |
| } |
| |
| static void picolcd_debug_out_report(struct picolcd_data *data, |
| struct hid_device *hdev, struct hid_report *report) |
| { |
| u8 raw_data[70]; |
| int raw_size = (report->size >> 3) + 1; |
| char *buff; |
| #define BUFF_SZ 256 |
| |
| /* Avoid unnecessary overhead if debugfs is disabled */ |
| if (!hdev->debug_events) |
| return; |
| |
| buff = kmalloc(BUFF_SZ, GFP_ATOMIC); |
| if (!buff) |
| return; |
| |
| snprintf(buff, BUFF_SZ, "\nout report %d (size %d) = ", |
| report->id, raw_size); |
| hid_debug_event(hdev, buff); |
| if (raw_size + 5 > sizeof(raw_data)) { |
| hid_debug_event(hdev, " TOO BIG\n"); |
| return; |
| } else { |
| raw_data[0] = report->id; |
| hid_output_report(report, raw_data); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data, raw_size); |
| hid_debug_event(hdev, buff); |
| } |
| |
| switch (report->id) { |
| case REPORT_LED_STATE: |
| /* 1 data byte with GPO state */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_LED_STATE", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tGPO state: 0x%02x\n", raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_BRIGHTNESS: |
| /* 1 data byte with brightness */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_BRIGHTNESS", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tBrightness: 0x%02x\n", raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_CONTRAST: |
| /* 1 data byte with contrast */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_CONTRAST", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tContrast: 0x%02x\n", raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_RESET: |
| /* 2 data bytes with reset duration in ms */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_RESET", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tDuration: 0x%02x%02x (%dms)\n", |
| raw_data[2], raw_data[1], raw_data[2] << 8 | raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_LCD_CMD: |
| /* 63 data bytes with LCD commands */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_LCD_CMD", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| /* TODO: format decoding */ |
| break; |
| case REPORT_LCD_DATA: |
| /* 63 data bytes with LCD data */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_LCD_CMD", report->id, raw_size-1); |
| /* TODO: format decoding */ |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_LCD_CMD_DATA: |
| /* 63 data bytes with LCD commands and data */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_LCD_CMD", report->id, raw_size-1); |
| /* TODO: format decoding */ |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_EE_READ: |
| /* 3 data bytes with read area description */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_EE_READ", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_EE_WRITE: |
| /* 3+1..20 data bytes with write area description */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_EE_WRITE", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); |
| hid_debug_event(hdev, buff); |
| if (raw_data[3] == 0) { |
| snprintf(buff, BUFF_SZ, "\tNo data\n"); |
| } else if (raw_data[3] + 4 <= raw_size) { |
| snprintf(buff, BUFF_SZ, "\tData: "); |
| hid_debug_event(hdev, buff); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); |
| } else { |
| snprintf(buff, BUFF_SZ, "\tData overflowed\n"); |
| } |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_ERASE_MEMORY: |
| case REPORT_BL_ERASE_MEMORY: |
| /* 3 data bytes with pointer inside erase block */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_ERASE_MEMORY", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| switch (data->addr_sz) { |
| case 2: |
| snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x\n", |
| raw_data[2], raw_data[1]); |
| break; |
| case 3: |
| snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x%02x\n", |
| raw_data[3], raw_data[2], raw_data[1]); |
| break; |
| default: |
| snprintf(buff, BUFF_SZ, "\tNot supported\n"); |
| } |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_READ_MEMORY: |
| case REPORT_BL_READ_MEMORY: |
| /* 4 data bytes with read area description */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_READ_MEMORY", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| switch (data->addr_sz) { |
| case 2: |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); |
| break; |
| case 3: |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n", |
| raw_data[3], raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]); |
| break; |
| default: |
| snprintf(buff, BUFF_SZ, "\tNot supported\n"); |
| } |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_WRITE_MEMORY: |
| case REPORT_BL_WRITE_MEMORY: |
| /* 4+1..32 data bytes with write adrea description */ |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_WRITE_MEMORY", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| switch (data->addr_sz) { |
| case 2: |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); |
| hid_debug_event(hdev, buff); |
| if (raw_data[3] == 0) { |
| snprintf(buff, BUFF_SZ, "\tNo data\n"); |
| } else if (raw_data[3] + 4 <= raw_size) { |
| snprintf(buff, BUFF_SZ, "\tData: "); |
| hid_debug_event(hdev, buff); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); |
| } else { |
| snprintf(buff, BUFF_SZ, "\tData overflowed\n"); |
| } |
| break; |
| case 3: |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n", |
| raw_data[3], raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]); |
| hid_debug_event(hdev, buff); |
| if (raw_data[4] == 0) { |
| snprintf(buff, BUFF_SZ, "\tNo data\n"); |
| } else if (raw_data[4] + 5 <= raw_size) { |
| snprintf(buff, BUFF_SZ, "\tData: "); |
| hid_debug_event(hdev, buff); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]); |
| } else { |
| snprintf(buff, BUFF_SZ, "\tData overflowed\n"); |
| } |
| break; |
| default: |
| snprintf(buff, BUFF_SZ, "\tNot supported\n"); |
| } |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_SPLASH_RESTART: |
| /* TODO */ |
| break; |
| case REPORT_EXIT_KEYBOARD: |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_EXIT_KEYBOARD", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n", |
| raw_data[1] | (raw_data[2] << 8), |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_VERSION: |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_VERSION", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_DEVID: |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_DEVID", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_SPLASH_SIZE: |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_SPLASH_SIZE", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_HOOK_VERSION: |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_HOOK_VERSION", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_EXIT_FLASHER: |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "REPORT_VERSION", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n", |
| raw_data[1] | (raw_data[2] << 8), |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| default: |
| snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n", |
| "<unknown>", report->id, raw_size-1); |
| hid_debug_event(hdev, buff); |
| break; |
| } |
| wake_up_interruptible(&hdev->debug_wait); |
| kfree(buff); |
| } |
| |
| static void picolcd_debug_raw_event(struct picolcd_data *data, |
| struct hid_device *hdev, struct hid_report *report, |
| u8 *raw_data, int size) |
| { |
| char *buff; |
| |
| #define BUFF_SZ 256 |
| /* Avoid unnecessary overhead if debugfs is disabled */ |
| if (!hdev->debug_events) |
| return; |
| |
| buff = kmalloc(BUFF_SZ, GFP_ATOMIC); |
| if (!buff) |
| return; |
| |
| switch (report->id) { |
| case REPORT_ERROR_CODE: |
| /* 2 data bytes with affected report and error code */ |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_ERROR_CODE", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| if (raw_data[2] < ARRAY_SIZE(error_codes)) |
| snprintf(buff, BUFF_SZ, "\tError code 0x%02x (%s) in reply to report 0x%02x\n", |
| raw_data[2], error_codes[raw_data[2]], raw_data[1]); |
| else |
| snprintf(buff, BUFF_SZ, "\tError code 0x%02x in reply to report 0x%02x\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_KEY_STATE: |
| /* 2 data bytes with key state */ |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_KEY_STATE", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| if (raw_data[1] == 0) |
| snprintf(buff, BUFF_SZ, "\tNo key pressed\n"); |
| else if (raw_data[2] == 0) |
| snprintf(buff, BUFF_SZ, "\tOne key pressed: 0x%02x (%d)\n", |
| raw_data[1], raw_data[1]); |
| else |
| snprintf(buff, BUFF_SZ, "\tTwo keys pressed: 0x%02x (%d), 0x%02x (%d)\n", |
| raw_data[1], raw_data[1], raw_data[2], raw_data[2]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_IR_DATA: |
| /* Up to 20 byes of IR scancode data */ |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_IR_DATA", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| if (raw_data[1] == 0) { |
| snprintf(buff, BUFF_SZ, "\tUnexpectedly 0 data length\n"); |
| hid_debug_event(hdev, buff); |
| } else if (raw_data[1] + 1 <= size) { |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n\tIR Data: ", |
| raw_data[1]-1); |
| hid_debug_event(hdev, buff); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data+2, raw_data[1]-1); |
| hid_debug_event(hdev, buff); |
| } else { |
| snprintf(buff, BUFF_SZ, "\tOverflowing data length: %d\n", |
| raw_data[1]-1); |
| hid_debug_event(hdev, buff); |
| } |
| break; |
| case REPORT_EE_DATA: |
| /* Data buffer in response to REPORT_EE_READ or REPORT_EE_WRITE */ |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_EE_DATA", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); |
| hid_debug_event(hdev, buff); |
| if (raw_data[3] == 0) { |
| snprintf(buff, BUFF_SZ, "\tNo data\n"); |
| hid_debug_event(hdev, buff); |
| } else if (raw_data[3] + 4 <= size) { |
| snprintf(buff, BUFF_SZ, "\tData: "); |
| hid_debug_event(hdev, buff); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); |
| hid_debug_event(hdev, buff); |
| } else { |
| snprintf(buff, BUFF_SZ, "\tData overflowed\n"); |
| hid_debug_event(hdev, buff); |
| } |
| break; |
| case REPORT_MEMORY: |
| /* Data buffer in response to REPORT_READ_MEMORY or REPORT_WRTIE_MEMORY */ |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_MEMORY", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| switch (data->addr_sz) { |
| case 2: |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]); |
| hid_debug_event(hdev, buff); |
| if (raw_data[3] == 0) { |
| snprintf(buff, BUFF_SZ, "\tNo data\n"); |
| } else if (raw_data[3] + 4 <= size) { |
| snprintf(buff, BUFF_SZ, "\tData: "); |
| hid_debug_event(hdev, buff); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]); |
| } else { |
| snprintf(buff, BUFF_SZ, "\tData overflowed\n"); |
| } |
| break; |
| case 3: |
| snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n", |
| raw_data[3], raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]); |
| hid_debug_event(hdev, buff); |
| if (raw_data[4] == 0) { |
| snprintf(buff, BUFF_SZ, "\tNo data\n"); |
| } else if (raw_data[4] + 5 <= size) { |
| snprintf(buff, BUFF_SZ, "\tData: "); |
| hid_debug_event(hdev, buff); |
| dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]); |
| } else { |
| snprintf(buff, BUFF_SZ, "\tData overflowed\n"); |
| } |
| break; |
| default: |
| snprintf(buff, BUFF_SZ, "\tNot supported\n"); |
| } |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_VERSION: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_VERSION", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n", |
| raw_data[2], raw_data[1]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_BL_ERASE_MEMORY: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_BL_ERASE_MEMORY", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| /* TODO */ |
| break; |
| case REPORT_BL_READ_MEMORY: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_BL_READ_MEMORY", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| /* TODO */ |
| break; |
| case REPORT_BL_WRITE_MEMORY: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_BL_WRITE_MEMORY", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| /* TODO */ |
| break; |
| case REPORT_DEVID: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_DEVID", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tSerial: 0x%02x%02x%02x%02x\n", |
| raw_data[1], raw_data[2], raw_data[3], raw_data[4]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tType: 0x%02x\n", |
| raw_data[5]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_SPLASH_SIZE: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_SPLASH_SIZE", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tTotal splash space: %d\n", |
| (raw_data[2] << 8) | raw_data[1]); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tUsed splash space: %d\n", |
| (raw_data[4] << 8) | raw_data[3]); |
| hid_debug_event(hdev, buff); |
| break; |
| case REPORT_HOOK_VERSION: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "REPORT_HOOK_VERSION", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n", |
| raw_data[1], raw_data[2]); |
| hid_debug_event(hdev, buff); |
| break; |
| default: |
| snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n", |
| "<unknown>", report->id, size-1); |
| hid_debug_event(hdev, buff); |
| break; |
| } |
| wake_up_interruptible(&hdev->debug_wait); |
| kfree(buff); |
| } |
| #else |
| #define picolcd_debug_raw_event(data, hdev, report, raw_data, size) |
| #endif |
| |
| /* |
| * Handle raw report as sent by device |
| */ |
| static int picolcd_raw_event(struct hid_device *hdev, |
| struct hid_report *report, u8 *raw_data, int size) |
| { |
| struct picolcd_data *data = hid_get_drvdata(hdev); |
| unsigned long flags; |
| int ret = 0; |
| |
| if (!data) |
| return 1; |
| |
| if (report->id == REPORT_KEY_STATE) { |
| if (data->input_keys) |
| ret = picolcd_raw_keypad(data, report, raw_data+1, size-1); |
| } else if (report->id == REPORT_IR_DATA) { |
| if (data->input_cir) |
| ret = picolcd_raw_cir(data, report, raw_data+1, size-1); |
| } else { |
| spin_lock_irqsave(&data->lock, flags); |
| /* |
| * We let the caller of picolcd_send_and_wait() check if the |
| * report we got is one of the expected ones or not. |
| */ |
| if (data->pending) { |
| memcpy(data->pending->raw_data, raw_data+1, size-1); |
| data->pending->raw_size = size-1; |
| data->pending->in_report = report; |
| complete(&data->pending->ready); |
| } |
| spin_unlock_irqrestore(&data->lock, flags); |
| } |
| |
| picolcd_debug_raw_event(data, hdev, report, raw_data, size); |
| return 1; |
| } |
| |
| /* initialize keypad input device */ |
| static int picolcd_init_keys(struct picolcd_data *data, |
| struct hid_report *report) |
| { |
| struct hid_device *hdev = data->hdev; |
| struct input_dev *idev; |
| int error, i; |
| |
| if (!report) |
| return -ENODEV; |
| if (report->maxfield != 1 || report->field[0]->report_count != 2 || |
| report->field[0]->report_size != 8) { |
| dev_err(&hdev->dev, "unsupported KEY_STATE report"); |
| return -EINVAL; |
| } |
| |
| idev = input_allocate_device(); |
| if (idev == NULL) { |
| dev_err(&hdev->dev, "failed to allocate input device"); |
| return -ENOMEM; |
| } |
| input_set_drvdata(idev, hdev); |
| memcpy(data->keycode, def_keymap, sizeof(def_keymap)); |
| idev->name = hdev->name; |
| idev->phys = hdev->phys; |
| idev->uniq = hdev->uniq; |
| idev->id.bustype = hdev->bus; |
| idev->id.vendor = hdev->vendor; |
| idev->id.product = hdev->product; |
| idev->id.version = hdev->version; |
| idev->dev.parent = hdev->dev.parent; |
| idev->keycode = &data->keycode; |
| idev->keycodemax = PICOLCD_KEYS; |
| idev->keycodesize = sizeof(data->keycode[0]); |
| input_set_capability(idev, EV_MSC, MSC_SCAN); |
| set_bit(EV_REP, idev->evbit); |
| for (i = 0; i < PICOLCD_KEYS; i++) |
| input_set_capability(idev, EV_KEY, data->keycode[i]); |
| error = input_register_device(idev); |
| if (error) { |
| dev_err(&hdev->dev, "error registering the input device"); |
| input_free_device(idev); |
| return error; |
| } |
| data->input_keys = idev; |
| return 0; |
| } |
| |
| static void picolcd_exit_keys(struct picolcd_data *data) |
| { |
| struct input_dev *idev = data->input_keys; |
| |
| data->input_keys = NULL; |
| if (idev) |
| input_unregister_device(idev); |
| } |
| |
| /* initialize CIR input device */ |
| static inline int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report) |
| { |
| /* support not implemented yet */ |
| return 0; |
| } |
| |
| static inline void picolcd_exit_cir(struct picolcd_data *data) |
| { |
| } |
| |
| static int picolcd_probe_lcd(struct hid_device *hdev, struct picolcd_data *data) |
| { |
| struct hid_report *report; |
| int error; |
| |
| error = picolcd_check_version(hdev); |
| if (error) |
| return error; |
| |
| if (data->version[0] != 0 && data->version[1] != 3) |
| dev_info(&hdev->dev, "Device with untested firmware revision, " |
| "please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n", |
| dev_name(&hdev->dev)); |
| |
| /* Setup keypad input device */ |
| error = picolcd_init_keys(data, picolcd_in_report(REPORT_KEY_STATE, hdev)); |
| if (error) |
| goto err; |
| |
| /* Setup CIR input device */ |
| error = picolcd_init_cir(data, picolcd_in_report(REPORT_IR_DATA, hdev)); |
| if (error) |
| goto err; |
| |
| #ifdef CONFIG_DEBUG_FS |
| report = picolcd_out_report(REPORT_READ_MEMORY, hdev); |
| if (report && report->maxfield == 1 && report->field[0]->report_size == 8) |
| data->addr_sz = report->field[0]->report_count - 1; |
| else |
| data->addr_sz = -1; |
| #endif |
| return 0; |
| err: |
| picolcd_exit_cir(data); |
| picolcd_exit_keys(data); |
| return error; |
| } |
| |
| static int picolcd_probe_bootloader(struct hid_device *hdev, struct picolcd_data *data) |
| { |
| struct hid_report *report; |
| int error; |
| |
| error = picolcd_check_version(hdev); |
| if (error) |
| return error; |
| |
| if (data->version[0] != 1 && data->version[1] != 0) |
| dev_info(&hdev->dev, "Device with untested bootloader revision, " |
| "please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n", |
| dev_name(&hdev->dev)); |
| |
| #ifdef CONFIG_DEBUG_FS |
| report = picolcd_out_report(REPORT_BL_READ_MEMORY, hdev); |
| if (report && report->maxfield == 1 && report->field[0]->report_size == 8) |
| data->addr_sz = report->field[0]->report_count - 1; |
| else |
| data->addr_sz = -1; |
| #endif |
| return 0; |
| } |
| |
| static int picolcd_probe(struct hid_device *hdev, |
| const struct hid_device_id *id) |
| { |
| struct picolcd_data *data; |
| int error = -ENOMEM; |
| |
| dbg_hid(PICOLCD_NAME " hardware probe...\n"); |
| |
| /* |
| * Let's allocate the picolcd data structure, set some reasonable |
| * defaults, and associate it with the device |
| */ |
| data = kzalloc(sizeof(struct picolcd_data), GFP_KERNEL); |
| if (data == NULL) { |
| dev_err(&hdev->dev, "can't allocate space for Minibox PicoLCD device data\n"); |
| error = -ENOMEM; |
| goto err_no_cleanup; |
| } |
| |
| spin_lock_init(&data->lock); |
| mutex_init(&data->mutex); |
| data->hdev = hdev; |
| if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER) |
| data->status |= PICOLCD_BOOTLOADER; |
| hid_set_drvdata(hdev, data); |
| |
| /* Parse the device reports and start it up */ |
| error = hid_parse(hdev); |
| if (error) { |
| dev_err(&hdev->dev, "device report parse failed\n"); |
| goto err_cleanup_data; |
| } |
| |
| /* We don't use hidinput but hid_hw_start() fails if nothing is |
| * claimed. So spoof claimed input. */ |
| hdev->claimed = HID_CLAIMED_INPUT; |
| error = hid_hw_start(hdev, 0); |
| hdev->claimed = 0; |
| if (error) { |
| dev_err(&hdev->dev, "hardware start failed\n"); |
| goto err_cleanup_data; |
| } |
| |
| error = hdev->ll_driver->open(hdev); |
| if (error) { |
| dev_err(&hdev->dev, "failed to open input interrupt pipe for key and IR events\n"); |
| goto err_cleanup_hid_hw; |
| } |
| |
| error = device_create_file(&hdev->dev, &dev_attr_operation_mode); |
| if (error) { |
| dev_err(&hdev->dev, "failed to create sysfs attributes\n"); |
| goto err_cleanup_hid_ll; |
| } |
| |
| if (data->status & PICOLCD_BOOTLOADER) |
| error = picolcd_probe_bootloader(hdev, data); |
| else |
| error = picolcd_probe_lcd(hdev, data); |
| if (error) |
| goto err_cleanup_sysfs; |
| |
| dbg_hid(PICOLCD_NAME " activated and initialized\n"); |
| return 0; |
| |
| err_cleanup_sysfs: |
| device_remove_file(&hdev->dev, &dev_attr_operation_mode); |
| err_cleanup_hid_ll: |
| hdev->ll_driver->close(hdev); |
| err_cleanup_hid_hw: |
| hid_hw_stop(hdev); |
| err_cleanup_data: |
| kfree(data); |
| err_no_cleanup: |
| hid_set_drvdata(hdev, NULL); |
| |
| return error; |
| } |
| |
| static void picolcd_remove(struct hid_device *hdev) |
| { |
| struct picolcd_data *data = hid_get_drvdata(hdev); |
| unsigned long flags; |
| |
| dbg_hid(PICOLCD_NAME " hardware remove...\n"); |
| spin_lock_irqsave(&data->lock, flags); |
| data->status |= PICOLCD_FAILED; |
| spin_unlock_irqrestore(&data->lock, flags); |
| |
| device_remove_file(&hdev->dev, &dev_attr_operation_mode); |
| hdev->ll_driver->close(hdev); |
| hid_hw_stop(hdev); |
| hid_set_drvdata(hdev, NULL); |
| |
| /* Shortcut potential pending reply that will never arrive */ |
| spin_lock_irqsave(&data->lock, flags); |
| if (data->pending) |
| complete(&data->pending->ready); |
| spin_unlock_irqrestore(&data->lock, flags); |
| |
| /* Cleanup input */ |
| picolcd_exit_cir(data); |
| picolcd_exit_keys(data); |
| |
| mutex_destroy(&data->mutex); |
| /* Finally, clean up the picolcd data itself */ |
| kfree(data); |
| } |
| |
| static const struct hid_device_id picolcd_devices[] = { |
| { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) }, |
| { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(hid, picolcd_devices); |
| |
| static struct hid_driver picolcd_driver = { |
| .name = "hid-picolcd", |
| .id_table = picolcd_devices, |
| .probe = picolcd_probe, |
| .remove = picolcd_remove, |
| .raw_event = picolcd_raw_event, |
| }; |
| |
| static int __init picolcd_init(void) |
| { |
| return hid_register_driver(&picolcd_driver); |
| } |
| |
| static void __exit picolcd_exit(void) |
| { |
| hid_unregister_driver(&picolcd_driver); |
| } |
| |
| module_init(picolcd_init); |
| module_exit(picolcd_exit); |
| MODULE_DESCRIPTION("Minibox graphics PicoLCD Driver"); |
| MODULE_LICENSE("GPL v2"); |