467d652306
Add leds support to PicoLCD device to drive the GPO pins. GPO support depends on leds class and is only being compiled if leds class has been selected. Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2131 lines
61 KiB
C
2131 lines
61 KiB
C
/***************************************************************************
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* Copyright (C) 2010 by Bruno Prémont <bonbons@linux-vserver.org> *
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* *
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* Based on Logitech G13 driver (v0.4) *
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* Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> *
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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, version 2 of the License. *
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* *
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* This driver is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* 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 software. If not see <http://www.gnu.org/licenses/>. *
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***************************************************************************/
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#include <linux/hid.h>
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#include <linux/hid-debug.h>
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#include <linux/input.h>
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#include "hid-ids.h"
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#include "usbhid/usbhid.h"
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#include <linux/usb.h>
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#include <linux/fb.h>
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#include <linux/vmalloc.h>
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#include <linux/backlight.h>
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#include <linux/lcd.h>
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#include <linux/leds.h>
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#include <linux/seq_file.h>
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#include <linux/debugfs.h>
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#include <linux/completion.h>
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#define PICOLCD_NAME "PicoLCD (graphic)"
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/* Report numbers */
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#define REPORT_ERROR_CODE 0x10 /* LCD: IN[16] */
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#define ERR_SUCCESS 0x00
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#define ERR_PARAMETER_MISSING 0x01
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#define ERR_DATA_MISSING 0x02
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#define ERR_BLOCK_READ_ONLY 0x03
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#define ERR_BLOCK_NOT_ERASABLE 0x04
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#define ERR_BLOCK_TOO_BIG 0x05
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#define ERR_SECTION_OVERFLOW 0x06
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#define ERR_INVALID_CMD_LEN 0x07
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#define ERR_INVALID_DATA_LEN 0x08
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#define REPORT_KEY_STATE 0x11 /* LCD: IN[2] */
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#define REPORT_IR_DATA 0x21 /* LCD: IN[63] */
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#define REPORT_EE_DATA 0x32 /* LCD: IN[63] */
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#define REPORT_MEMORY 0x41 /* LCD: IN[63] */
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#define REPORT_LED_STATE 0x81 /* LCD: OUT[1] */
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#define REPORT_BRIGHTNESS 0x91 /* LCD: OUT[1] */
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#define REPORT_CONTRAST 0x92 /* LCD: OUT[1] */
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#define REPORT_RESET 0x93 /* LCD: OUT[2] */
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#define REPORT_LCD_CMD 0x94 /* LCD: OUT[63] */
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#define REPORT_LCD_DATA 0x95 /* LCD: OUT[63] */
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#define REPORT_LCD_CMD_DATA 0x96 /* LCD: OUT[63] */
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#define REPORT_EE_READ 0xa3 /* LCD: OUT[63] */
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#define REPORT_EE_WRITE 0xa4 /* LCD: OUT[63] */
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#define REPORT_ERASE_MEMORY 0xb2 /* LCD: OUT[2] */
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#define REPORT_READ_MEMORY 0xb3 /* LCD: OUT[3] */
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#define REPORT_WRITE_MEMORY 0xb4 /* LCD: OUT[63] */
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#define REPORT_SPLASH_RESTART 0xc1 /* LCD: OUT[1] */
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#define REPORT_EXIT_KEYBOARD 0xef /* LCD: OUT[2] */
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#define REPORT_VERSION 0xf1 /* LCD: IN[2],OUT[1] Bootloader: IN[2],OUT[1] */
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#define REPORT_BL_ERASE_MEMORY 0xf2 /* Bootloader: IN[36],OUT[4] */
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#define REPORT_BL_READ_MEMORY 0xf3 /* Bootloader: IN[36],OUT[4] */
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#define REPORT_BL_WRITE_MEMORY 0xf4 /* Bootloader: IN[36],OUT[36] */
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#define REPORT_DEVID 0xf5 /* LCD: IN[5], OUT[1] Bootloader: IN[5],OUT[1] */
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#define REPORT_SPLASH_SIZE 0xf6 /* LCD: IN[4], OUT[1] */
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#define REPORT_HOOK_VERSION 0xf7 /* LCD: IN[2], OUT[1] */
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#define REPORT_EXIT_FLASHER 0xff /* Bootloader: OUT[2] */
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#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
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/* Framebuffer
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*
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* The PicoLCD use a Topway LCD module of 256x64 pixel
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* This display area is tiled over 4 controllers with 8 tiles
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* each. Each tile has 8x64 pixel, each data byte representing
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* a 1-bit wide vertical line of the tile.
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*
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* The display can be updated at a tile granularity.
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*
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* Chip 1 Chip 2 Chip 3 Chip 4
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* +----------------+----------------+----------------+----------------+
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* | Tile 1 | Tile 1 | Tile 1 | Tile 1 |
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* +----------------+----------------+----------------+----------------+
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* | Tile 2 | Tile 2 | Tile 2 | Tile 2 |
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* +----------------+----------------+----------------+----------------+
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* ...
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* +----------------+----------------+----------------+----------------+
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* | Tile 8 | Tile 8 | Tile 8 | Tile 8 |
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* +----------------+----------------+----------------+----------------+
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*/
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#define PICOLCDFB_NAME "picolcdfb"
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#define PICOLCDFB_WIDTH (256)
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#define PICOLCDFB_HEIGHT (64)
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#define PICOLCDFB_SIZE (PICOLCDFB_WIDTH * PICOLCDFB_HEIGHT / 8)
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#define PICOLCDFB_UPDATE_RATE_LIMIT 10
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#define PICOLCDFB_UPDATE_RATE_DEFAULT 2
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/* Framebuffer visual structures */
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static const struct fb_fix_screeninfo picolcdfb_fix = {
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.id = PICOLCDFB_NAME,
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.type = FB_TYPE_PACKED_PIXELS,
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.visual = FB_VISUAL_MONO01,
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.xpanstep = 0,
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.ypanstep = 0,
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.ywrapstep = 0,
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.line_length = PICOLCDFB_WIDTH / 8,
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.accel = FB_ACCEL_NONE,
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};
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static const struct fb_var_screeninfo picolcdfb_var = {
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.xres = PICOLCDFB_WIDTH,
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.yres = PICOLCDFB_HEIGHT,
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.xres_virtual = PICOLCDFB_WIDTH,
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.yres_virtual = PICOLCDFB_HEIGHT,
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.width = 103,
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.height = 26,
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.bits_per_pixel = 1,
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.grayscale = 1,
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};
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#endif /* CONFIG_FB */
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/* Input device
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*
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* The PicoLCD has an IR receiver header, a built-in keypad with 5 keys
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* and header for 4x4 key matrix. The built-in keys are part of the matrix.
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*/
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static const unsigned short def_keymap[] = {
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KEY_RESERVED, /* none */
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KEY_BACK, /* col 4 + row 1 */
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KEY_HOMEPAGE, /* col 3 + row 1 */
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KEY_RESERVED, /* col 2 + row 1 */
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KEY_RESERVED, /* col 1 + row 1 */
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KEY_SCROLLUP, /* col 4 + row 2 */
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KEY_OK, /* col 3 + row 2 */
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KEY_SCROLLDOWN, /* col 2 + row 2 */
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KEY_RESERVED, /* col 1 + row 2 */
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KEY_RESERVED, /* col 4 + row 3 */
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KEY_RESERVED, /* col 3 + row 3 */
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KEY_RESERVED, /* col 2 + row 3 */
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KEY_RESERVED, /* col 1 + row 3 */
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KEY_RESERVED, /* col 4 + row 4 */
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KEY_RESERVED, /* col 3 + row 4 */
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KEY_RESERVED, /* col 2 + row 4 */
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KEY_RESERVED, /* col 1 + row 4 */
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};
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#define PICOLCD_KEYS ARRAY_SIZE(def_keymap)
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/* Description of in-progress IO operation, used for operations
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* that trigger response from device */
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struct picolcd_pending {
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struct hid_report *out_report;
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struct hid_report *in_report;
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struct completion ready;
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int raw_size;
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u8 raw_data[64];
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};
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/* Per device data structure */
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struct picolcd_data {
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struct hid_device *hdev;
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#ifdef CONFIG_DEBUG_FS
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int addr_sz;
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#endif
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u8 version[2];
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/* input stuff */
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u8 pressed_keys[2];
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struct input_dev *input_keys;
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struct input_dev *input_cir;
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unsigned short keycode[PICOLCD_KEYS];
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#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
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/* Framebuffer stuff */
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u8 fb_update_rate;
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u8 fb_bpp;
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u8 *fb_vbitmap; /* local copy of what was sent to PicoLCD */
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u8 *fb_bitmap; /* framebuffer */
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struct fb_info *fb_info;
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struct fb_deferred_io fb_defio;
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#endif /* CONFIG_FB */
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#if defined(CONFIG_LCD_CLASS_DEVICE) || defined(CONFIG_LCD_CLASS_DEVICE_MODULE)
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struct lcd_device *lcd;
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u8 lcd_contrast;
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#endif
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#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
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struct backlight_device *backlight;
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u8 lcd_brightness;
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u8 lcd_power;
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#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
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#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
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/* LED stuff */
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u8 led_state;
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struct led_classdev *led[8];
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#endif /* CONFIG_LEDS_CLASS */
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/* Housekeeping stuff */
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spinlock_t lock;
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struct mutex mutex;
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struct picolcd_pending *pending;
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int status;
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#define PICOLCD_BOOTLOADER 1
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#define PICOLCD_FAILED 2
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#define PICOLCD_READY_FB 4
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};
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/* Find a given report */
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#define picolcd_in_report(id, dev) picolcd_report(id, dev, HID_INPUT_REPORT)
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#define picolcd_out_report(id, dev) picolcd_report(id, dev, HID_OUTPUT_REPORT)
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static struct hid_report *picolcd_report(int id, struct hid_device *hdev, int dir)
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{
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struct list_head *feature_report_list = &hdev->report_enum[dir].report_list;
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struct hid_report *report = NULL;
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list_for_each_entry(report, feature_report_list, list) {
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if (report->id == id)
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return report;
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}
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dev_warn(&hdev->dev, "No report with id 0x%x found\n", id);
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return NULL;
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}
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#ifdef CONFIG_DEBUG_FS
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static void picolcd_debug_out_report(struct picolcd_data *data,
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struct hid_device *hdev, struct hid_report *report);
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#define usbhid_submit_report(a, b, c) \
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do { \
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picolcd_debug_out_report(hid_get_drvdata(a), a, b); \
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usbhid_submit_report(a, b, c); \
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} while (0)
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#endif
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/* Submit a report and wait for a reply from device - if device fades away
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* or does not respond in time, return NULL */
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static struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev,
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int report_id, const u8 *raw_data, int size)
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{
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struct picolcd_data *data = hid_get_drvdata(hdev);
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struct picolcd_pending *work;
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struct hid_report *report = picolcd_out_report(report_id, hdev);
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unsigned long flags;
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int i, j, k;
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if (!report || !data)
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return NULL;
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if (data->status & PICOLCD_FAILED)
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return NULL;
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work = kzalloc(sizeof(*work), GFP_KERNEL);
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if (!work)
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return NULL;
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init_completion(&work->ready);
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work->out_report = report;
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work->in_report = NULL;
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work->raw_size = 0;
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mutex_lock(&data->mutex);
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spin_lock_irqsave(&data->lock, flags);
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for (i = k = 0; i < report->maxfield; i++)
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for (j = 0; j < report->field[i]->report_count; j++) {
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hid_set_field(report->field[i], j, k < size ? raw_data[k] : 0);
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k++;
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}
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data->pending = work;
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usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
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spin_unlock_irqrestore(&data->lock, flags);
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wait_for_completion_interruptible_timeout(&work->ready, HZ*2);
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spin_lock_irqsave(&data->lock, flags);
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data->pending = NULL;
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spin_unlock_irqrestore(&data->lock, flags);
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mutex_unlock(&data->mutex);
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return work;
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}
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#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
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/* Send a given tile to PicoLCD */
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static int picolcd_fb_send_tile(struct hid_device *hdev, int chip, int tile)
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{
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struct picolcd_data *data = hid_get_drvdata(hdev);
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struct hid_report *report1 = picolcd_out_report(REPORT_LCD_CMD_DATA, hdev);
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struct hid_report *report2 = picolcd_out_report(REPORT_LCD_DATA, hdev);
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unsigned long flags;
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u8 *tdata;
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int i;
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if (!report1 || report1->maxfield != 1 || !report2 || report2->maxfield != 1)
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return -ENODEV;
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spin_lock_irqsave(&data->lock, flags);
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hid_set_field(report1->field[0], 0, chip << 2);
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hid_set_field(report1->field[0], 1, 0x02);
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hid_set_field(report1->field[0], 2, 0x00);
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hid_set_field(report1->field[0], 3, 0x00);
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hid_set_field(report1->field[0], 4, 0xb8 | tile);
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hid_set_field(report1->field[0], 5, 0x00);
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hid_set_field(report1->field[0], 6, 0x00);
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hid_set_field(report1->field[0], 7, 0x40);
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hid_set_field(report1->field[0], 8, 0x00);
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hid_set_field(report1->field[0], 9, 0x00);
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hid_set_field(report1->field[0], 10, 32);
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hid_set_field(report2->field[0], 0, (chip << 2) | 0x01);
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hid_set_field(report2->field[0], 1, 0x00);
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hid_set_field(report2->field[0], 2, 0x00);
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hid_set_field(report2->field[0], 3, 32);
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tdata = data->fb_vbitmap + (tile * 4 + chip) * 64;
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for (i = 0; i < 64; i++)
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if (i < 32)
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hid_set_field(report1->field[0], 11 + i, tdata[i]);
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else
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hid_set_field(report2->field[0], 4 + i - 32, tdata[i]);
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usbhid_submit_report(data->hdev, report1, USB_DIR_OUT);
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usbhid_submit_report(data->hdev, report2, USB_DIR_OUT);
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spin_unlock_irqrestore(&data->lock, flags);
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return 0;
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}
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/* Translate a single tile*/
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static int picolcd_fb_update_tile(u8 *vbitmap, const u8 *bitmap, int bpp,
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int chip, int tile)
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{
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int i, b, changed = 0;
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u8 tdata[64];
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u8 *vdata = vbitmap + (tile * 4 + chip) * 64;
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if (bpp == 1) {
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for (b = 7; b >= 0; b--) {
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const u8 *bdata = bitmap + tile * 256 + chip * 8 + b * 32;
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for (i = 0; i < 64; i++) {
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tdata[i] <<= 1;
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tdata[i] |= (bdata[i/8] >> (7 - i % 8)) & 0x01;
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}
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}
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} else if (bpp == 8) {
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for (b = 7; b >= 0; b--) {
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const u8 *bdata = bitmap + (tile * 256 + chip * 8 + b * 32) * 8;
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for (i = 0; i < 64; i++) {
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tdata[i] <<= 1;
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tdata[i] |= (bdata[i] & 0x80) ? 0x01 : 0x00;
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}
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}
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} else {
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/* Oops, we should never get here! */
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WARN_ON(1);
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return 0;
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}
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for (i = 0; i < 64; i++)
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if (tdata[i] != vdata[i]) {
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changed = 1;
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vdata[i] = tdata[i];
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}
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return changed;
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}
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/* Reconfigure LCD display */
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static int picolcd_fb_reset(struct picolcd_data *data, int clear)
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{
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struct hid_report *report = picolcd_out_report(REPORT_LCD_CMD, data->hdev);
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int i, j;
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unsigned long flags;
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static const u8 mapcmd[8] = { 0x00, 0x02, 0x00, 0x64, 0x3f, 0x00, 0x64, 0xc0 };
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if (!report || report->maxfield != 1)
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return -ENODEV;
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spin_lock_irqsave(&data->lock, flags);
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for (i = 0; i < 4; i++) {
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for (j = 0; j < report->field[0]->maxusage; j++)
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if (j == 0)
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hid_set_field(report->field[0], j, i << 2);
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else if (j < sizeof(mapcmd))
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hid_set_field(report->field[0], j, mapcmd[j]);
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else
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hid_set_field(report->field[0], j, 0);
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usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
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}
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data->status |= PICOLCD_READY_FB;
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spin_unlock_irqrestore(&data->lock, flags);
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if (data->fb_bitmap) {
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if (clear) {
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memset(data->fb_vbitmap, 0xff, PICOLCDFB_SIZE);
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memset(data->fb_bitmap, 0, PICOLCDFB_SIZE*data->fb_bpp);
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} else {
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/* invert 1 byte in each tile to force resend */
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for (i = 0; i < PICOLCDFB_SIZE; i += 64)
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data->fb_vbitmap[i] = ~data->fb_vbitmap[i];
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}
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}
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/* schedule first output of framebuffer */
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if (data->fb_info)
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schedule_delayed_work(&data->fb_info->deferred_work, 0);
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return 0;
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}
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/* Update fb_vbitmap from the screen_base and send changed tiles to device */
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static void picolcd_fb_update(struct picolcd_data *data)
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{
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int chip, tile, n;
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unsigned long flags;
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spin_lock_irqsave(&data->lock, flags);
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if (!(data->status & PICOLCD_READY_FB)) {
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spin_unlock_irqrestore(&data->lock, flags);
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picolcd_fb_reset(data, 0);
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} else {
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spin_unlock_irqrestore(&data->lock, flags);
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}
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/*
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* Translate the framebuffer into the format needed by the PicoLCD.
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* See display layout above.
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* Do this one tile after the other and push those tiles that changed.
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*
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* Wait for our IO to complete as otherwise we might flood the queue!
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*/
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n = 0;
|
|
for (chip = 0; chip < 4; chip++)
|
|
for (tile = 0; tile < 8; tile++)
|
|
if (picolcd_fb_update_tile(data->fb_vbitmap,
|
|
data->fb_bitmap, data->fb_bpp, chip, tile)) {
|
|
n += 2;
|
|
if (n >= HID_OUTPUT_FIFO_SIZE / 2) {
|
|
usbhid_wait_io(data->hdev);
|
|
n = 0;
|
|
}
|
|
picolcd_fb_send_tile(data->hdev, chip, tile);
|
|
}
|
|
if (n)
|
|
usbhid_wait_io(data->hdev);
|
|
}
|
|
|
|
/* Stub to call the system default and update the image on the picoLCD */
|
|
static void picolcd_fb_fillrect(struct fb_info *info,
|
|
const struct fb_fillrect *rect)
|
|
{
|
|
if (!info->par)
|
|
return;
|
|
sys_fillrect(info, rect);
|
|
|
|
schedule_delayed_work(&info->deferred_work, 0);
|
|
}
|
|
|
|
/* Stub to call the system default and update the image on the picoLCD */
|
|
static void picolcd_fb_copyarea(struct fb_info *info,
|
|
const struct fb_copyarea *area)
|
|
{
|
|
if (!info->par)
|
|
return;
|
|
sys_copyarea(info, area);
|
|
|
|
schedule_delayed_work(&info->deferred_work, 0);
|
|
}
|
|
|
|
/* Stub to call the system default and update the image on the picoLCD */
|
|
static void picolcd_fb_imageblit(struct fb_info *info, const struct fb_image *image)
|
|
{
|
|
if (!info->par)
|
|
return;
|
|
sys_imageblit(info, image);
|
|
|
|
schedule_delayed_work(&info->deferred_work, 0);
|
|
}
|
|
|
|
/*
|
|
* this is the slow path from userspace. they can seek and write to
|
|
* the fb. it's inefficient to do anything less than a full screen draw
|
|
*/
|
|
static ssize_t picolcd_fb_write(struct fb_info *info, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
ssize_t ret;
|
|
if (!info->par)
|
|
return -ENODEV;
|
|
ret = fb_sys_write(info, buf, count, ppos);
|
|
if (ret >= 0)
|
|
schedule_delayed_work(&info->deferred_work, 0);
|
|
return ret;
|
|
}
|
|
|
|
static int picolcd_fb_blank(int blank, struct fb_info *info)
|
|
{
|
|
if (!info->par)
|
|
return -ENODEV;
|
|
/* We let fb notification do this for us via lcd/backlight device */
|
|
return 0;
|
|
}
|
|
|
|
static void picolcd_fb_destroy(struct fb_info *info)
|
|
{
|
|
struct picolcd_data *data = info->par;
|
|
info->par = NULL;
|
|
if (data)
|
|
data->fb_info = NULL;
|
|
fb_deferred_io_cleanup(info);
|
|
framebuffer_release(info);
|
|
}
|
|
|
|
static int picolcd_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
|
|
{
|
|
__u32 bpp = var->bits_per_pixel;
|
|
__u32 activate = var->activate;
|
|
|
|
/* only allow 1/8 bit depth (8-bit is grayscale) */
|
|
*var = picolcdfb_var;
|
|
var->activate = activate;
|
|
if (bpp >= 8)
|
|
var->bits_per_pixel = 8;
|
|
else
|
|
var->bits_per_pixel = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int picolcd_set_par(struct fb_info *info)
|
|
{
|
|
struct picolcd_data *data = info->par;
|
|
u8 *o_fb, *n_fb;
|
|
if (info->var.bits_per_pixel == data->fb_bpp)
|
|
return 0;
|
|
/* switch between 1/8 bit depths */
|
|
if (info->var.bits_per_pixel != 1 && info->var.bits_per_pixel != 8)
|
|
return -EINVAL;
|
|
|
|
o_fb = data->fb_bitmap;
|
|
n_fb = vmalloc(PICOLCDFB_SIZE*info->var.bits_per_pixel);
|
|
if (!n_fb)
|
|
return -ENOMEM;
|
|
|
|
fb_deferred_io_cleanup(info);
|
|
/* translate FB content to new bits-per-pixel */
|
|
if (info->var.bits_per_pixel == 1) {
|
|
int i, b;
|
|
for (i = 0; i < PICOLCDFB_SIZE; i++) {
|
|
u8 p = 0;
|
|
for (b = 0; b < 8; b++) {
|
|
p <<= 1;
|
|
p |= o_fb[i*8+b] ? 0x01 : 0x00;
|
|
}
|
|
}
|
|
info->fix.visual = FB_VISUAL_MONO01;
|
|
info->fix.line_length = PICOLCDFB_WIDTH / 8;
|
|
} else {
|
|
int i;
|
|
for (i = 0; i < PICOLCDFB_SIZE * 8; i++)
|
|
n_fb[i] = o_fb[i/8] & (0x01 << (7 - i % 8)) ? 0xff : 0x00;
|
|
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
info->fix.line_length = PICOLCDFB_WIDTH;
|
|
}
|
|
|
|
data->fb_bitmap = n_fb;
|
|
data->fb_bpp = info->var.bits_per_pixel;
|
|
info->screen_base = (char __force __iomem *)n_fb;
|
|
info->fix.smem_start = (unsigned long)n_fb;
|
|
info->fix.smem_len = PICOLCDFB_SIZE*data->fb_bpp;
|
|
fb_deferred_io_init(info);
|
|
vfree(o_fb);
|
|
return 0;
|
|
}
|
|
|
|
/* Note this can't be const because of struct fb_info definition */
|
|
static struct fb_ops picolcdfb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_destroy = picolcd_fb_destroy,
|
|
.fb_read = fb_sys_read,
|
|
.fb_write = picolcd_fb_write,
|
|
.fb_blank = picolcd_fb_blank,
|
|
.fb_fillrect = picolcd_fb_fillrect,
|
|
.fb_copyarea = picolcd_fb_copyarea,
|
|
.fb_imageblit = picolcd_fb_imageblit,
|
|
.fb_check_var = picolcd_fb_check_var,
|
|
.fb_set_par = picolcd_set_par,
|
|
};
|
|
|
|
|
|
/* Callback from deferred IO workqueue */
|
|
static void picolcd_fb_deferred_io(struct fb_info *info, struct list_head *pagelist)
|
|
{
|
|
picolcd_fb_update(info->par);
|
|
}
|
|
|
|
static const struct fb_deferred_io picolcd_fb_defio = {
|
|
.delay = HZ / PICOLCDFB_UPDATE_RATE_DEFAULT,
|
|
.deferred_io = picolcd_fb_deferred_io,
|
|
};
|
|
|
|
|
|
/*
|
|
* The "fb_update_rate" sysfs attribute
|
|
*/
|
|
static ssize_t picolcd_fb_update_rate_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct picolcd_data *data = dev_get_drvdata(dev);
|
|
unsigned i, fb_update_rate = data->fb_update_rate;
|
|
size_t ret = 0;
|
|
|
|
for (i = 1; i <= PICOLCDFB_UPDATE_RATE_LIMIT; i++)
|
|
if (ret >= PAGE_SIZE)
|
|
break;
|
|
else if (i == fb_update_rate)
|
|
ret += snprintf(buf+ret, PAGE_SIZE-ret, "[%u] ", i);
|
|
else
|
|
ret += snprintf(buf+ret, PAGE_SIZE-ret, "%u ", i);
|
|
if (ret > 0)
|
|
buf[min(ret, (size_t)PAGE_SIZE)-1] = '\n';
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t picolcd_fb_update_rate_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct picolcd_data *data = dev_get_drvdata(dev);
|
|
int i;
|
|
unsigned u;
|
|
|
|
if (count < 1 || count > 10)
|
|
return -EINVAL;
|
|
|
|
i = sscanf(buf, "%u", &u);
|
|
if (i != 1)
|
|
return -EINVAL;
|
|
|
|
if (u > PICOLCDFB_UPDATE_RATE_LIMIT)
|
|
return -ERANGE;
|
|
else if (u == 0)
|
|
u = PICOLCDFB_UPDATE_RATE_DEFAULT;
|
|
|
|
data->fb_update_rate = u;
|
|
data->fb_defio.delay = HZ / data->fb_update_rate;
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(fb_update_rate, 0666, picolcd_fb_update_rate_show,
|
|
picolcd_fb_update_rate_store);
|
|
|
|
/* initialize Framebuffer device */
|
|
static int picolcd_init_framebuffer(struct picolcd_data *data)
|
|
{
|
|
struct device *dev = &data->hdev->dev;
|
|
struct fb_info *info = NULL;
|
|
int error = -ENOMEM;
|
|
u8 *fb_vbitmap = NULL;
|
|
u8 *fb_bitmap = NULL;
|
|
|
|
fb_bitmap = vmalloc(PICOLCDFB_SIZE*picolcdfb_var.bits_per_pixel);
|
|
if (fb_bitmap == NULL) {
|
|
dev_err(dev, "can't get a free page for framebuffer\n");
|
|
goto err_nomem;
|
|
}
|
|
|
|
fb_vbitmap = kmalloc(PICOLCDFB_SIZE, GFP_KERNEL);
|
|
if (fb_vbitmap == NULL) {
|
|
dev_err(dev, "can't alloc vbitmap image buffer\n");
|
|
goto err_nomem;
|
|
}
|
|
|
|
data->fb_update_rate = PICOLCDFB_UPDATE_RATE_DEFAULT;
|
|
data->fb_defio = picolcd_fb_defio;
|
|
info = framebuffer_alloc(0, dev);
|
|
if (info == NULL) {
|
|
dev_err(dev, "failed to allocate a framebuffer\n");
|
|
goto err_nomem;
|
|
}
|
|
|
|
info->fbdefio = &data->fb_defio;
|
|
info->screen_base = (char __force __iomem *)fb_bitmap;
|
|
info->fbops = &picolcdfb_ops;
|
|
info->var = picolcdfb_var;
|
|
info->fix = picolcdfb_fix;
|
|
info->fix.smem_len = PICOLCDFB_SIZE;
|
|
info->fix.smem_start = (unsigned long)fb_bitmap;
|
|
info->par = data;
|
|
info->flags = FBINFO_FLAG_DEFAULT;
|
|
|
|
data->fb_vbitmap = fb_vbitmap;
|
|
data->fb_bitmap = fb_bitmap;
|
|
data->fb_bpp = picolcdfb_var.bits_per_pixel;
|
|
error = picolcd_fb_reset(data, 1);
|
|
if (error) {
|
|
dev_err(dev, "failed to configure display\n");
|
|
goto err_cleanup;
|
|
}
|
|
error = device_create_file(dev, &dev_attr_fb_update_rate);
|
|
if (error) {
|
|
dev_err(dev, "failed to create sysfs attributes\n");
|
|
goto err_cleanup;
|
|
}
|
|
data->fb_info = info;
|
|
error = register_framebuffer(info);
|
|
if (error) {
|
|
dev_err(dev, "failed to register framebuffer\n");
|
|
goto err_sysfs;
|
|
}
|
|
fb_deferred_io_init(info);
|
|
/* schedule first output of framebuffer */
|
|
schedule_delayed_work(&info->deferred_work, 0);
|
|
return 0;
|
|
|
|
err_sysfs:
|
|
device_remove_file(dev, &dev_attr_fb_update_rate);
|
|
err_cleanup:
|
|
data->fb_vbitmap = NULL;
|
|
data->fb_bitmap = NULL;
|
|
data->fb_bpp = 0;
|
|
data->fb_info = NULL;
|
|
|
|
err_nomem:
|
|
framebuffer_release(info);
|
|
vfree(fb_bitmap);
|
|
kfree(fb_vbitmap);
|
|
return error;
|
|
}
|
|
|
|
static void picolcd_exit_framebuffer(struct picolcd_data *data)
|
|
{
|
|
struct fb_info *info = data->fb_info;
|
|
u8 *fb_vbitmap = data->fb_vbitmap;
|
|
u8 *fb_bitmap = data->fb_bitmap;
|
|
|
|
if (!info)
|
|
return;
|
|
|
|
data->fb_vbitmap = NULL;
|
|
data->fb_bitmap = NULL;
|
|
data->fb_bpp = 0;
|
|
data->fb_info = NULL;
|
|
device_remove_file(&data->hdev->dev, &dev_attr_fb_update_rate);
|
|
fb_deferred_io_cleanup(info);
|
|
unregister_framebuffer(info);
|
|
vfree(fb_bitmap);
|
|
kfree(fb_vbitmap);
|
|
}
|
|
|
|
#define picolcd_fbinfo(d) ((d)->fb_info)
|
|
#else
|
|
static inline int picolcd_fb_reset(struct picolcd_data *data, int clear)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int picolcd_init_framebuffer(struct picolcd_data *data)
|
|
{
|
|
return 0;
|
|
}
|
|
static void picolcd_exit_framebuffer(struct picolcd_data *data)
|
|
{
|
|
}
|
|
#define picolcd_fbinfo(d) NULL
|
|
#endif /* CONFIG_FB */
|
|
|
|
#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
|
|
/*
|
|
* backlight class device
|
|
*/
|
|
static int picolcd_get_brightness(struct backlight_device *bdev)
|
|
{
|
|
struct picolcd_data *data = bl_get_data(bdev);
|
|
return data->lcd_brightness;
|
|
}
|
|
|
|
static int picolcd_set_brightness(struct backlight_device *bdev)
|
|
{
|
|
struct picolcd_data *data = bl_get_data(bdev);
|
|
struct hid_report *report = picolcd_out_report(REPORT_BRIGHTNESS, data->hdev);
|
|
unsigned long flags;
|
|
|
|
if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
|
|
return -ENODEV;
|
|
|
|
data->lcd_brightness = bdev->props.brightness & 0x0ff;
|
|
data->lcd_power = bdev->props.power;
|
|
spin_lock_irqsave(&data->lock, flags);
|
|
hid_set_field(report->field[0], 0, data->lcd_power == FB_BLANK_UNBLANK ? data->lcd_brightness : 0);
|
|
usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
|
|
spin_unlock_irqrestore(&data->lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int picolcd_check_bl_fb(struct backlight_device *bdev, struct fb_info *fb)
|
|
{
|
|
return fb && fb == picolcd_fbinfo((struct picolcd_data *)bl_get_data(bdev));
|
|
}
|
|
|
|
static const struct backlight_ops picolcd_blops = {
|
|
.update_status = picolcd_set_brightness,
|
|
.get_brightness = picolcd_get_brightness,
|
|
.check_fb = picolcd_check_bl_fb,
|
|
};
|
|
|
|
static int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *report)
|
|
{
|
|
struct device *dev = &data->hdev->dev;
|
|
struct backlight_device *bdev;
|
|
struct backlight_properties props;
|
|
if (!report)
|
|
return -ENODEV;
|
|
if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
|
|
report->field[0]->report_size != 8) {
|
|
dev_err(dev, "unsupported BRIGHTNESS report");
|
|
return -EINVAL;
|
|
}
|
|
|
|
memset(&props, 0, sizeof(props));
|
|
props.max_brightness = 0xff;
|
|
bdev = backlight_device_register(dev_name(dev), dev, data,
|
|
&picolcd_blops, &props);
|
|
if (IS_ERR(bdev)) {
|
|
dev_err(dev, "failed to register backlight\n");
|
|
return PTR_ERR(bdev);
|
|
}
|
|
bdev->props.brightness = 0xff;
|
|
data->lcd_brightness = 0xff;
|
|
data->backlight = bdev;
|
|
picolcd_set_brightness(bdev);
|
|
return 0;
|
|
}
|
|
|
|
static void picolcd_exit_backlight(struct picolcd_data *data)
|
|
{
|
|
struct backlight_device *bdev = data->backlight;
|
|
|
|
data->backlight = NULL;
|
|
if (bdev)
|
|
backlight_device_unregister(bdev);
|
|
}
|
|
|
|
static inline int picolcd_resume_backlight(struct picolcd_data *data)
|
|
{
|
|
if (!data->backlight)
|
|
return 0;
|
|
return picolcd_set_brightness(data->backlight);
|
|
}
|
|
|
|
#else
|
|
static inline int picolcd_init_backlight(struct picolcd_data *data,
|
|
struct hid_report *report)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void picolcd_exit_backlight(struct picolcd_data *data)
|
|
{
|
|
}
|
|
static inline int picolcd_resume_backlight(struct picolcd_data *data)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
|
|
|
|
#if defined(CONFIG_LCD_CLASS_DEVICE) || defined(CONFIG_LCD_CLASS_DEVICE_MODULE)
|
|
/*
|
|
* lcd class device
|
|
*/
|
|
static int picolcd_get_contrast(struct lcd_device *ldev)
|
|
{
|
|
struct picolcd_data *data = lcd_get_data(ldev);
|
|
return data->lcd_contrast;
|
|
}
|
|
|
|
static int picolcd_set_contrast(struct lcd_device *ldev, int contrast)
|
|
{
|
|
struct picolcd_data *data = lcd_get_data(ldev);
|
|
struct hid_report *report = picolcd_out_report(REPORT_CONTRAST, data->hdev);
|
|
unsigned long flags;
|
|
|
|
if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
|
|
return -ENODEV;
|
|
|
|
data->lcd_contrast = contrast & 0x0ff;
|
|
spin_lock_irqsave(&data->lock, flags);
|
|
hid_set_field(report->field[0], 0, data->lcd_contrast);
|
|
usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
|
|
spin_unlock_irqrestore(&data->lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int picolcd_check_lcd_fb(struct lcd_device *ldev, struct fb_info *fb)
|
|
{
|
|
return fb && fb == picolcd_fbinfo((struct picolcd_data *)lcd_get_data(ldev));
|
|
}
|
|
|
|
static struct lcd_ops picolcd_lcdops = {
|
|
.get_contrast = picolcd_get_contrast,
|
|
.set_contrast = picolcd_set_contrast,
|
|
.check_fb = picolcd_check_lcd_fb,
|
|
};
|
|
|
|
static int picolcd_init_lcd(struct picolcd_data *data, struct hid_report *report)
|
|
{
|
|
struct device *dev = &data->hdev->dev;
|
|
struct lcd_device *ldev;
|
|
|
|
if (!report)
|
|
return -ENODEV;
|
|
if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
|
|
report->field[0]->report_size != 8) {
|
|
dev_err(dev, "unsupported CONTRAST report");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ldev = lcd_device_register(dev_name(dev), dev, data, &picolcd_lcdops);
|
|
if (IS_ERR(ldev)) {
|
|
dev_err(dev, "failed to register LCD\n");
|
|
return PTR_ERR(ldev);
|
|
}
|
|
ldev->props.max_contrast = 0x0ff;
|
|
data->lcd_contrast = 0xe5;
|
|
data->lcd = ldev;
|
|
picolcd_set_contrast(ldev, 0xe5);
|
|
return 0;
|
|
}
|
|
|
|
static void picolcd_exit_lcd(struct picolcd_data *data)
|
|
{
|
|
struct lcd_device *ldev = data->lcd;
|
|
|
|
data->lcd = NULL;
|
|
if (ldev)
|
|
lcd_device_unregister(ldev);
|
|
}
|
|
|
|
static inline int picolcd_resume_lcd(struct picolcd_data *data)
|
|
{
|
|
if (!data->lcd)
|
|
return 0;
|
|
return picolcd_set_contrast(data->lcd, data->lcd_contrast);
|
|
}
|
|
#else
|
|
static inline int picolcd_init_lcd(struct picolcd_data *data,
|
|
struct hid_report *report)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void picolcd_exit_lcd(struct picolcd_data *data)
|
|
{
|
|
}
|
|
static inline int picolcd_resume_lcd(struct picolcd_data *data)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_LCD_CLASS_DEVICE */
|
|
|
|
#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
|
|
/**
|
|
* LED class device
|
|
*/
|
|
static void picolcd_leds_set(struct picolcd_data *data)
|
|
{
|
|
struct hid_report *report;
|
|
unsigned long flags;
|
|
|
|
if (!data->led[0])
|
|
return;
|
|
report = picolcd_out_report(REPORT_LED_STATE, data->hdev);
|
|
if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
|
|
return;
|
|
|
|
spin_lock_irqsave(&data->lock, flags);
|
|
hid_set_field(report->field[0], 0, data->led_state);
|
|
usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
|
|
spin_unlock_irqrestore(&data->lock, flags);
|
|
}
|
|
|
|
static void picolcd_led_set_brightness(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
struct device *dev;
|
|
struct hid_device *hdev;
|
|
struct picolcd_data *data;
|
|
int i, state = 0;
|
|
|
|
dev = led_cdev->dev->parent;
|
|
hdev = container_of(dev, struct hid_device, dev);
|
|
data = hid_get_drvdata(hdev);
|
|
for (i = 0; i < 8; i++) {
|
|
if (led_cdev != data->led[i])
|
|
continue;
|
|
state = (data->led_state >> i) & 1;
|
|
if (value == LED_OFF && state) {
|
|
data->led_state &= ~(1 << i);
|
|
picolcd_leds_set(data);
|
|
} else if (value != LED_OFF && !state) {
|
|
data->led_state |= 1 << i;
|
|
picolcd_leds_set(data);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static enum led_brightness picolcd_led_get_brightness(struct led_classdev *led_cdev)
|
|
{
|
|
struct device *dev;
|
|
struct hid_device *hdev;
|
|
struct picolcd_data *data;
|
|
int i, value = 0;
|
|
|
|
dev = led_cdev->dev->parent;
|
|
hdev = container_of(dev, struct hid_device, dev);
|
|
data = hid_get_drvdata(hdev);
|
|
for (i = 0; i < 8; i++)
|
|
if (led_cdev == data->led[i]) {
|
|
value = (data->led_state >> i) & 1;
|
|
break;
|
|
}
|
|
return value ? LED_FULL : LED_OFF;
|
|
}
|
|
|
|
static int picolcd_init_leds(struct picolcd_data *data, struct hid_report *report)
|
|
{
|
|
struct device *dev = &data->hdev->dev;
|
|
struct led_classdev *led;
|
|
size_t name_sz = strlen(dev_name(dev)) + 8;
|
|
char *name;
|
|
int i, ret = 0;
|
|
|
|
if (!report)
|
|
return -ENODEV;
|
|
if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
|
|
report->field[0]->report_size != 8) {
|
|
dev_err(dev, "unsupported LED_STATE report");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
|
|
if (!led) {
|
|
dev_err(dev, "can't allocate memory for LED %d\n", i);
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
name = (void *)(&led[1]);
|
|
snprintf(name, name_sz, "%s::GPO%d", dev_name(dev), i);
|
|
led->name = name;
|
|
led->brightness = 0;
|
|
led->max_brightness = 1;
|
|
led->brightness_get = picolcd_led_get_brightness;
|
|
led->brightness_set = picolcd_led_set_brightness;
|
|
|
|
data->led[i] = led;
|
|
ret = led_classdev_register(dev, data->led[i]);
|
|
if (ret) {
|
|
data->led[i] = NULL;
|
|
kfree(led);
|
|
dev_err(dev, "can't register LED %d\n", i);
|
|
goto err;
|
|
}
|
|
}
|
|
return 0;
|
|
err:
|
|
for (i = 0; i < 8; i++)
|
|
if (data->led[i]) {
|
|
led = data->led[i];
|
|
data->led[i] = NULL;
|
|
led_classdev_unregister(led);
|
|
kfree(led);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void picolcd_exit_leds(struct picolcd_data *data)
|
|
{
|
|
struct led_classdev *led;
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
led = data->led[i];
|
|
data->led[i] = NULL;
|
|
if (!led)
|
|
continue;
|
|
led_classdev_unregister(led);
|
|
kfree(led);
|
|
}
|
|
}
|
|
|
|
#else
|
|
static inline int picolcd_init_leds(struct picolcd_data *data,
|
|
struct hid_report *report)
|
|
{
|
|
return 0;
|
|
}
|
|
static void picolcd_exit_leds(struct picolcd_data *data)
|
|
{
|
|
}
|
|
static inline int picolcd_leds_set(struct picolcd_data *data)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_LEDS_CLASS */
|
|
|
|
/*
|
|
* 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;
|
|
int error;
|
|
|
|
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);
|
|
|
|
error = picolcd_check_version(hdev);
|
|
if (error)
|
|
return error;
|
|
|
|
picolcd_resume_lcd(data);
|
|
picolcd_resume_backlight(data);
|
|
#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
|
|
if (data->fb_info)
|
|
schedule_delayed_work(&data->fb_info->deferred_work, 0);
|
|
#endif /* CONFIG_FB */
|
|
|
|
picolcd_leds_set(data);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
/* Set up the framebuffer device */
|
|
error = picolcd_init_framebuffer(data);
|
|
if (error)
|
|
goto err;
|
|
|
|
/* Setup lcd class device */
|
|
error = picolcd_init_lcd(data, picolcd_out_report(REPORT_CONTRAST, hdev));
|
|
if (error)
|
|
goto err;
|
|
|
|
/* Setup backlight class device */
|
|
error = picolcd_init_backlight(data, picolcd_out_report(REPORT_BRIGHTNESS, hdev));
|
|
if (error)
|
|
goto err;
|
|
|
|
/* Setup the LED class devices */
|
|
error = picolcd_init_leds(data, picolcd_out_report(REPORT_LED_STATE, 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_leds(data);
|
|
picolcd_exit_backlight(data);
|
|
picolcd_exit_lcd(data);
|
|
picolcd_exit_framebuffer(data);
|
|
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 LED */
|
|
picolcd_exit_leds(data);
|
|
/* Clean up the framebuffer */
|
|
picolcd_exit_backlight(data);
|
|
picolcd_exit_lcd(data);
|
|
picolcd_exit_framebuffer(data);
|
|
/* 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");
|