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-rw-r--r--drivers/hid/Kconfig58
-rw-r--r--drivers/hid/Makefile1
-rw-r--r--drivers/hid/hid-core.c2
-rw-r--r--drivers/hid/hid-ids.h2
-rw-r--r--drivers/hid/hid-picolcd.c2562
-rw-r--r--drivers/hid/usbhid/hid-core.c1
6 files changed, 2626 insertions, 0 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 71d4c0703629..0e8aa63e3f55 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -262,6 +262,64 @@ config HID_PETALYNX
262 ---help--- 262 ---help---
263 Support for Petalynx Maxter remote control. 263 Support for Petalynx Maxter remote control.
264 264
265config HID_PICOLCD
266 tristate "PicoLCD (graphic version)"
267 depends on USB_HID
268 ---help---
269 This provides support for Minibox PicoLCD devices, currently
270 only the graphical ones are supported.
271
272 This includes support for the following device features:
273 - Keypad
274 - Switching between Firmware and Flash mode
275 - EEProm / Flash access (via debugfs)
276 Features selectively enabled:
277 - Framebuffer for monochrome 256x64 display
278 - Backlight control
279 - Contrast control
280 - General purpose outputs
281 Features that are not (yet) supported:
282 - IR
283
284config HID_PICOLCD_FB
285 bool "Framebuffer support" if EMBEDDED
286 default !EMBEDDED
287 depends on HID_PICOLCD
288 depends on HID_PICOLCD=FB || FB=y
289 select FB_DEFERRED_IO
290 select FB_SYS_FILLRECT
291 select FB_SYS_COPYAREA
292 select FB_SYS_IMAGEBLIT
293 select FB_SYS_FOPS
294 ---help---
295 Provide access to PicoLCD's 256x64 monochrome display via a
296 frambuffer device.
297
298config HID_PICOLCD_BACKLIGHT
299 bool "Backlight control" if EMBEDDED
300 default !EMBEDDED
301 depends on HID_PICOLCD
302 depends on HID_PICOLCD=BACKLIGHT_CLASS_DEVICE || BACKLIGHT_CLASS_DEVICE=y
303 ---help---
304 Provide access to PicoLCD's backlight control via backlight
305 class.
306
307config HID_PICOLCD_LCD
308 bool "Contrast control" if EMBEDDED
309 default !EMBEDDED
310 depends on HID_PICOLCD
311 depends on HID_PICOLCD=LCD_CLASS_DEVICE || LCD_CLASS_DEVICE=y
312 ---help---
313 Provide access to PicoLCD's LCD contrast via lcd class.
314
315config HID_PICOLCD_LEDS
316 bool "GPO via leds class" if EMBEDDED
317 default !EMBEDDED
318 depends on HID_PICOLCD
319 depends on HID_PICOLCD=LEDS_CLASS || LEDS_CLASS=y
320 ---help---
321 Provide access to PicoLCD's GPO pins via leds class.
322
265config HID_QUANTA 323config HID_QUANTA
266 tristate "Quanta Optical Touch" 324 tristate "Quanta Optical Touch"
267 depends on USB_HID 325 depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 0b2618f092ca..7fd1614e7e2c 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_HID_ORTEK) += hid-ortek.o
44obj-$(CONFIG_HID_QUANTA) += hid-quanta.o 44obj-$(CONFIG_HID_QUANTA) += hid-quanta.o
45obj-$(CONFIG_HID_PANTHERLORD) += hid-pl.o 45obj-$(CONFIG_HID_PANTHERLORD) += hid-pl.o
46obj-$(CONFIG_HID_PETALYNX) += hid-petalynx.o 46obj-$(CONFIG_HID_PETALYNX) += hid-petalynx.o
47obj-$(CONFIG_HID_PICOLCD) += hid-picolcd.o
47obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o 48obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o
48obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o 49obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o
49obj-$(CONFIG_HID_SONY) += hid-sony.o 50obj-$(CONFIG_HID_SONY) += hid-sony.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 2e2aa759d230..bb11fb460d55 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1335,6 +1335,8 @@ static const struct hid_device_id hid_blacklist[] = {
1335 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) }, 1335 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1336 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) }, 1336 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1337 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) }, 1337 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1338 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1339 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1338 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) }, 1340 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1339 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) }, 1341 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1340 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) }, 1342 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 797e06470356..783b41d8592e 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -341,6 +341,8 @@
341#define USB_VENDOR_ID_MICROCHIP 0x04d8 341#define USB_VENDOR_ID_MICROCHIP 0x04d8
342#define USB_DEVICE_ID_PICKIT1 0x0032 342#define USB_DEVICE_ID_PICKIT1 0x0032
343#define USB_DEVICE_ID_PICKIT2 0x0033 343#define USB_DEVICE_ID_PICKIT2 0x0033
344#define USB_DEVICE_ID_PICOLCD 0xc002
345#define USB_DEVICE_ID_PICOLCD_BOOTLOADER 0xf002
344 346
345#define USB_VENDOR_ID_MICROSOFT 0x045e 347#define USB_VENDOR_ID_MICROSOFT 0x045e
346#define USB_DEVICE_ID_SIDEWINDER_GV 0x003b 348#define USB_DEVICE_ID_SIDEWINDER_GV 0x003b
diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c
new file mode 100644
index 000000000000..aa6f2e18d4a6
--- /dev/null
+++ b/drivers/hid/hid-picolcd.c
@@ -0,0 +1,2562 @@
1/***************************************************************************
2 * Copyright (C) 2010 by Bruno Prémont <bonbons@linux-vserver.org> *
3 * *
4 * Based on Logitech G13 driver (v0.4) *
5 * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> *
6 * *
7 * This program is free software: you can redistribute it and/or modify *
8 * it under the terms of the GNU General Public License as published by *
9 * the Free Software Foundation, version 2 of the License. *
10 * *
11 * This driver is distributed in the hope that it will be useful, but *
12 * WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14 * General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this software. If not see <http://www.gnu.org/licenses/>. *
18 ***************************************************************************/
19
20#include <linux/hid.h>
21#include <linux/hid-debug.h>
22#include <linux/input.h>
23#include "hid-ids.h"
24#include "usbhid/usbhid.h"
25#include <linux/usb.h>
26
27#include <linux/fb.h>
28#include <linux/vmalloc.h>
29#include <linux/backlight.h>
30#include <linux/lcd.h>
31
32#include <linux/leds.h>
33
34#include <linux/seq_file.h>
35#include <linux/debugfs.h>
36
37#include <linux/completion.h>
38#include <linux/uaccess.h>
39
40#define PICOLCD_NAME "PicoLCD (graphic)"
41
42/* Report numbers */
43#define REPORT_ERROR_CODE 0x10 /* LCD: IN[16] */
44#define ERR_SUCCESS 0x00
45#define ERR_PARAMETER_MISSING 0x01
46#define ERR_DATA_MISSING 0x02
47#define ERR_BLOCK_READ_ONLY 0x03
48#define ERR_BLOCK_NOT_ERASABLE 0x04
49#define ERR_BLOCK_TOO_BIG 0x05
50#define ERR_SECTION_OVERFLOW 0x06
51#define ERR_INVALID_CMD_LEN 0x07
52#define ERR_INVALID_DATA_LEN 0x08
53#define REPORT_KEY_STATE 0x11 /* LCD: IN[2] */
54#define REPORT_IR_DATA 0x21 /* LCD: IN[63] */
55#define REPORT_EE_DATA 0x32 /* LCD: IN[63] */
56#define REPORT_MEMORY 0x41 /* LCD: IN[63] */
57#define REPORT_LED_STATE 0x81 /* LCD: OUT[1] */
58#define REPORT_BRIGHTNESS 0x91 /* LCD: OUT[1] */
59#define REPORT_CONTRAST 0x92 /* LCD: OUT[1] */
60#define REPORT_RESET 0x93 /* LCD: OUT[2] */
61#define REPORT_LCD_CMD 0x94 /* LCD: OUT[63] */
62#define REPORT_LCD_DATA 0x95 /* LCD: OUT[63] */
63#define REPORT_LCD_CMD_DATA 0x96 /* LCD: OUT[63] */
64#define REPORT_EE_READ 0xa3 /* LCD: OUT[63] */
65#define REPORT_EE_WRITE 0xa4 /* LCD: OUT[63] */
66#define REPORT_ERASE_MEMORY 0xb2 /* LCD: OUT[2] */
67#define REPORT_READ_MEMORY 0xb3 /* LCD: OUT[3] */
68#define REPORT_WRITE_MEMORY 0xb4 /* LCD: OUT[63] */
69#define REPORT_SPLASH_RESTART 0xc1 /* LCD: OUT[1] */
70#define REPORT_EXIT_KEYBOARD 0xef /* LCD: OUT[2] */
71#define REPORT_VERSION 0xf1 /* LCD: IN[2],OUT[1] Bootloader: IN[2],OUT[1] */
72#define REPORT_BL_ERASE_MEMORY 0xf2 /* Bootloader: IN[36],OUT[4] */
73#define REPORT_BL_READ_MEMORY 0xf3 /* Bootloader: IN[36],OUT[4] */
74#define REPORT_BL_WRITE_MEMORY 0xf4 /* Bootloader: IN[36],OUT[36] */
75#define REPORT_DEVID 0xf5 /* LCD: IN[5], OUT[1] Bootloader: IN[5],OUT[1] */
76#define REPORT_SPLASH_SIZE 0xf6 /* LCD: IN[4], OUT[1] */
77#define REPORT_HOOK_VERSION 0xf7 /* LCD: IN[2], OUT[1] */
78#define REPORT_EXIT_FLASHER 0xff /* Bootloader: OUT[2] */
79
80#ifdef CONFIG_HID_PICOLCD_FB
81/* Framebuffer
82 *
83 * The PicoLCD use a Topway LCD module of 256x64 pixel
84 * This display area is tiled over 4 controllers with 8 tiles
85 * each. Each tile has 8x64 pixel, each data byte representing
86 * a 1-bit wide vertical line of the tile.
87 *
88 * The display can be updated at a tile granularity.
89 *
90 * Chip 1 Chip 2 Chip 3 Chip 4
91 * +----------------+----------------+----------------+----------------+
92 * | Tile 1 | Tile 1 | Tile 1 | Tile 1 |
93 * +----------------+----------------+----------------+----------------+
94 * | Tile 2 | Tile 2 | Tile 2 | Tile 2 |
95 * +----------------+----------------+----------------+----------------+
96 * ...
97 * +----------------+----------------+----------------+----------------+
98 * | Tile 8 | Tile 8 | Tile 8 | Tile 8 |
99 * +----------------+----------------+----------------+----------------+
100 */
101#define PICOLCDFB_NAME "picolcdfb"
102#define PICOLCDFB_WIDTH (256)
103#define PICOLCDFB_HEIGHT (64)
104#define PICOLCDFB_SIZE (PICOLCDFB_WIDTH * PICOLCDFB_HEIGHT / 8)
105
106#define PICOLCDFB_UPDATE_RATE_LIMIT 10
107#define PICOLCDFB_UPDATE_RATE_DEFAULT 2
108
109/* Framebuffer visual structures */
110static const struct fb_fix_screeninfo picolcdfb_fix = {
111 .id = PICOLCDFB_NAME,
112 .type = FB_TYPE_PACKED_PIXELS,
113 .visual = FB_VISUAL_MONO01,
114 .xpanstep = 0,
115 .ypanstep = 0,
116 .ywrapstep = 0,
117 .line_length = PICOLCDFB_WIDTH / 8,
118 .accel = FB_ACCEL_NONE,
119};
120
121static const struct fb_var_screeninfo picolcdfb_var = {
122 .xres = PICOLCDFB_WIDTH,
123 .yres = PICOLCDFB_HEIGHT,
124 .xres_virtual = PICOLCDFB_WIDTH,
125 .yres_virtual = PICOLCDFB_HEIGHT,
126 .width = 103,
127 .height = 26,
128 .bits_per_pixel = 1,
129 .grayscale = 1,
130};
131#endif /* CONFIG_HID_PICOLCD_FB */
132
133/* Input device
134 *
135 * The PicoLCD has an IR receiver header, a built-in keypad with 5 keys
136 * and header for 4x4 key matrix. The built-in keys are part of the matrix.
137 */
138static const unsigned short def_keymap[] = {
139 KEY_RESERVED, /* none */
140 KEY_BACK, /* col 4 + row 1 */
141 KEY_HOMEPAGE, /* col 3 + row 1 */
142 KEY_RESERVED, /* col 2 + row 1 */
143 KEY_RESERVED, /* col 1 + row 1 */
144 KEY_SCROLLUP, /* col 4 + row 2 */
145 KEY_OK, /* col 3 + row 2 */
146 KEY_SCROLLDOWN, /* col 2 + row 2 */
147 KEY_RESERVED, /* col 1 + row 2 */
148 KEY_RESERVED, /* col 4 + row 3 */
149 KEY_RESERVED, /* col 3 + row 3 */
150 KEY_RESERVED, /* col 2 + row 3 */
151 KEY_RESERVED, /* col 1 + row 3 */
152 KEY_RESERVED, /* col 4 + row 4 */
153 KEY_RESERVED, /* col 3 + row 4 */
154 KEY_RESERVED, /* col 2 + row 4 */
155 KEY_RESERVED, /* col 1 + row 4 */
156};
157#define PICOLCD_KEYS ARRAY_SIZE(def_keymap)
158
159/* Description of in-progress IO operation, used for operations
160 * that trigger response from device */
161struct picolcd_pending {
162 struct hid_report *out_report;
163 struct hid_report *in_report;
164 struct completion ready;
165 int raw_size;
166 u8 raw_data[64];
167};
168
169/* Per device data structure */
170struct picolcd_data {
171 struct hid_device *hdev;
172#ifdef CONFIG_DEBUG_FS
173 struct dentry *debug_reset;
174 struct dentry *debug_eeprom;
175 struct dentry *debug_flash;
176 struct mutex mutex_flash;
177 int addr_sz;
178#endif
179 u8 version[2];
180 unsigned short opmode_delay;
181 /* input stuff */
182 u8 pressed_keys[2];
183 struct input_dev *input_keys;
184 struct input_dev *input_cir;
185 unsigned short keycode[PICOLCD_KEYS];
186
187#ifdef CONFIG_HID_PICOLCD_FB
188 /* Framebuffer stuff */
189 u8 fb_update_rate;
190 u8 fb_bpp;
191 u8 *fb_vbitmap; /* local copy of what was sent to PicoLCD */
192 u8 *fb_bitmap; /* framebuffer */
193 struct fb_info *fb_info;
194 struct fb_deferred_io fb_defio;
195#endif /* CONFIG_HID_PICOLCD_FB */
196#ifdef CONFIG_HID_PICOLCD_LCD
197 struct lcd_device *lcd;
198 u8 lcd_contrast;
199#endif /* CONFIG_HID_PICOLCD_LCD */
200#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
201 struct backlight_device *backlight;
202 u8 lcd_brightness;
203 u8 lcd_power;
204#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
205#ifdef CONFIG_HID_PICOLCD_LEDS
206 /* LED stuff */
207 u8 led_state;
208 struct led_classdev *led[8];
209#endif /* CONFIG_HID_PICOLCD_LEDS */
210
211 /* Housekeeping stuff */
212 spinlock_t lock;
213 struct mutex mutex;
214 struct picolcd_pending *pending;
215 int status;
216#define PICOLCD_BOOTLOADER 1
217#define PICOLCD_FAILED 2
218#define PICOLCD_READY_FB 4
219};
220
221
222/* Find a given report */
223#define picolcd_in_report(id, dev) picolcd_report(id, dev, HID_INPUT_REPORT)
224#define picolcd_out_report(id, dev) picolcd_report(id, dev, HID_OUTPUT_REPORT)
225
226static struct hid_report *picolcd_report(int id, struct hid_device *hdev, int dir)
227{
228 struct list_head *feature_report_list = &hdev->report_enum[dir].report_list;
229 struct hid_report *report = NULL;
230
231 list_for_each_entry(report, feature_report_list, list) {
232 if (report->id == id)
233 return report;
234 }
235 dev_warn(&hdev->dev, "No report with id 0x%x found\n", id);
236 return NULL;
237}
238
239#ifdef CONFIG_DEBUG_FS
240static void picolcd_debug_out_report(struct picolcd_data *data,
241 struct hid_device *hdev, struct hid_report *report);
242#define usbhid_submit_report(a, b, c) \
243 do { \
244 picolcd_debug_out_report(hid_get_drvdata(a), a, b); \
245 usbhid_submit_report(a, b, c); \
246 } while (0)
247#endif
248
249/* Submit a report and wait for a reply from device - if device fades away
250 * or does not respond in time, return NULL */
251static struct picolcd_pending *picolcd_send_and_wait(struct hid_device *hdev,
252 int report_id, const u8 *raw_data, int size)
253{
254 struct picolcd_data *data = hid_get_drvdata(hdev);
255 struct picolcd_pending *work;
256 struct hid_report *report = picolcd_out_report(report_id, hdev);
257 unsigned long flags;
258 int i, j, k;
259
260 if (!report || !data)
261 return NULL;
262 if (data->status & PICOLCD_FAILED)
263 return NULL;
264 work = kzalloc(sizeof(*work), GFP_KERNEL);
265 if (!work)
266 return NULL;
267
268 init_completion(&work->ready);
269 work->out_report = report;
270 work->in_report = NULL;
271 work->raw_size = 0;
272
273 mutex_lock(&data->mutex);
274 spin_lock_irqsave(&data->lock, flags);
275 for (i = k = 0; i < report->maxfield; i++)
276 for (j = 0; j < report->field[i]->report_count; j++) {
277 hid_set_field(report->field[i], j, k < size ? raw_data[k] : 0);
278 k++;
279 }
280 data->pending = work;
281 usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
282 spin_unlock_irqrestore(&data->lock, flags);
283 wait_for_completion_interruptible_timeout(&work->ready, HZ*2);
284 spin_lock_irqsave(&data->lock, flags);
285 data->pending = NULL;
286 spin_unlock_irqrestore(&data->lock, flags);
287 mutex_unlock(&data->mutex);
288 return work;
289}
290
291#ifdef CONFIG_HID_PICOLCD_FB
292/* Send a given tile to PicoLCD */
293static int picolcd_fb_send_tile(struct hid_device *hdev, int chip, int tile)
294{
295 struct picolcd_data *data = hid_get_drvdata(hdev);
296 struct hid_report *report1 = picolcd_out_report(REPORT_LCD_CMD_DATA, hdev);
297 struct hid_report *report2 = picolcd_out_report(REPORT_LCD_DATA, hdev);
298 unsigned long flags;
299 u8 *tdata;
300 int i;
301
302 if (!report1 || report1->maxfield != 1 || !report2 || report2->maxfield != 1)
303 return -ENODEV;
304
305 spin_lock_irqsave(&data->lock, flags);
306 hid_set_field(report1->field[0], 0, chip << 2);
307 hid_set_field(report1->field[0], 1, 0x02);
308 hid_set_field(report1->field[0], 2, 0x00);
309 hid_set_field(report1->field[0], 3, 0x00);
310 hid_set_field(report1->field[0], 4, 0xb8 | tile);
311 hid_set_field(report1->field[0], 5, 0x00);
312 hid_set_field(report1->field[0], 6, 0x00);
313 hid_set_field(report1->field[0], 7, 0x40);
314 hid_set_field(report1->field[0], 8, 0x00);
315 hid_set_field(report1->field[0], 9, 0x00);
316 hid_set_field(report1->field[0], 10, 32);
317
318 hid_set_field(report2->field[0], 0, (chip << 2) | 0x01);
319 hid_set_field(report2->field[0], 1, 0x00);
320 hid_set_field(report2->field[0], 2, 0x00);
321 hid_set_field(report2->field[0], 3, 32);
322
323 tdata = data->fb_vbitmap + (tile * 4 + chip) * 64;
324 for (i = 0; i < 64; i++)
325 if (i < 32)
326 hid_set_field(report1->field[0], 11 + i, tdata[i]);
327 else
328 hid_set_field(report2->field[0], 4 + i - 32, tdata[i]);
329
330 usbhid_submit_report(data->hdev, report1, USB_DIR_OUT);
331 usbhid_submit_report(data->hdev, report2, USB_DIR_OUT);
332 spin_unlock_irqrestore(&data->lock, flags);
333 return 0;
334}
335
336/* Translate a single tile*/
337static int picolcd_fb_update_tile(u8 *vbitmap, const u8 *bitmap, int bpp,
338 int chip, int tile)
339{
340 int i, b, changed = 0;
341 u8 tdata[64];
342 u8 *vdata = vbitmap + (tile * 4 + chip) * 64;
343
344 if (bpp == 1) {
345 for (b = 7; b >= 0; b--) {
346 const u8 *bdata = bitmap + tile * 256 + chip * 8 + b * 32;
347 for (i = 0; i < 64; i++) {
348 tdata[i] <<= 1;
349 tdata[i] |= (bdata[i/8] >> (7 - i % 8)) & 0x01;
350 }
351 }
352 } else if (bpp == 8) {
353 for (b = 7; b >= 0; b--) {
354 const u8 *bdata = bitmap + (tile * 256 + chip * 8 + b * 32) * 8;
355 for (i = 0; i < 64; i++) {
356 tdata[i] <<= 1;
357 tdata[i] |= (bdata[i] & 0x80) ? 0x01 : 0x00;
358 }
359 }
360 } else {
361 /* Oops, we should never get here! */
362 WARN_ON(1);
363 return 0;
364 }
365
366 for (i = 0; i < 64; i++)
367 if (tdata[i] != vdata[i]) {
368 changed = 1;
369 vdata[i] = tdata[i];
370 }
371 return changed;
372}
373
374/* Reconfigure LCD display */
375static int picolcd_fb_reset(struct picolcd_data *data, int clear)
376{
377 struct hid_report *report = picolcd_out_report(REPORT_LCD_CMD, data->hdev);
378 int i, j;
379 unsigned long flags;
380 static const u8 mapcmd[8] = { 0x00, 0x02, 0x00, 0x64, 0x3f, 0x00, 0x64, 0xc0 };
381
382 if (!report || report->maxfield != 1)
383 return -ENODEV;
384
385 spin_lock_irqsave(&data->lock, flags);
386 for (i = 0; i < 4; i++) {
387 for (j = 0; j < report->field[0]->maxusage; j++)
388 if (j == 0)
389 hid_set_field(report->field[0], j, i << 2);
390 else if (j < sizeof(mapcmd))
391 hid_set_field(report->field[0], j, mapcmd[j]);
392 else
393 hid_set_field(report->field[0], j, 0);
394 usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
395 }
396
397 data->status |= PICOLCD_READY_FB;
398 spin_unlock_irqrestore(&data->lock, flags);
399
400 if (data->fb_bitmap) {
401 if (clear) {
402 memset(data->fb_vbitmap, 0xff, PICOLCDFB_SIZE);
403 memset(data->fb_bitmap, 0, PICOLCDFB_SIZE*data->fb_bpp);
404 } else {
405 /* invert 1 byte in each tile to force resend */
406 for (i = 0; i < PICOLCDFB_SIZE; i += 64)
407 data->fb_vbitmap[i] = ~data->fb_vbitmap[i];
408 }
409 }
410
411 /* schedule first output of framebuffer */
412 if (data->fb_info)
413 schedule_delayed_work(&data->fb_info->deferred_work, 0);
414
415 return 0;
416}
417
418/* Update fb_vbitmap from the screen_base and send changed tiles to device */
419static void picolcd_fb_update(struct picolcd_data *data)
420{
421 int chip, tile, n;
422 unsigned long flags;
423
424 spin_lock_irqsave(&data->lock, flags);
425 if (!(data->status & PICOLCD_READY_FB)) {
426 spin_unlock_irqrestore(&data->lock, flags);
427 picolcd_fb_reset(data, 0);
428 } else {
429 spin_unlock_irqrestore(&data->lock, flags);
430 }
431
432 /*
433 * Translate the framebuffer into the format needed by the PicoLCD.
434 * See display layout above.
435 * Do this one tile after the other and push those tiles that changed.
436 *
437 * Wait for our IO to complete as otherwise we might flood the queue!
438 */
439 n = 0;
440 for (chip = 0; chip < 4; chip++)
441 for (tile = 0; tile < 8; tile++)
442 if (picolcd_fb_update_tile(data->fb_vbitmap,
443 data->fb_bitmap, data->fb_bpp, chip, tile)) {
444 n += 2;
445 if (n >= HID_OUTPUT_FIFO_SIZE / 2) {
446 usbhid_wait_io(data->hdev);
447 n = 0;
448 }
449 picolcd_fb_send_tile(data->hdev, chip, tile);
450 }
451 if (n)
452 usbhid_wait_io(data->hdev);
453}
454
455/* Stub to call the system default and update the image on the picoLCD */
456static void picolcd_fb_fillrect(struct fb_info *info,
457 const struct fb_fillrect *rect)
458{
459 if (!info->par)
460 return;
461 sys_fillrect(info, rect);
462
463 schedule_delayed_work(&info->deferred_work, 0);
464}
465
466/* Stub to call the system default and update the image on the picoLCD */
467static void picolcd_fb_copyarea(struct fb_info *info,
468 const struct fb_copyarea *area)
469{
470 if (!info->par)
471 return;
472 sys_copyarea(info, area);
473
474 schedule_delayed_work(&info->deferred_work, 0);
475}
476
477/* Stub to call the system default and update the image on the picoLCD */
478static void picolcd_fb_imageblit(struct fb_info *info, const struct fb_image *image)
479{
480 if (!info->par)
481 return;
482 sys_imageblit(info, image);
483
484 schedule_delayed_work(&info->deferred_work, 0);
485}
486
487/*
488 * this is the slow path from userspace. they can seek and write to
489 * the fb. it's inefficient to do anything less than a full screen draw
490 */
491static ssize_t picolcd_fb_write(struct fb_info *info, const char __user *buf,
492 size_t count, loff_t *ppos)
493{
494 ssize_t ret;
495 if (!info->par)
496 return -ENODEV;
497 ret = fb_sys_write(info, buf, count, ppos);
498 if (ret >= 0)
499 schedule_delayed_work(&info->deferred_work, 0);
500 return ret;
501}
502
503static int picolcd_fb_blank(int blank, struct fb_info *info)
504{
505 if (!info->par)
506 return -ENODEV;
507 /* We let fb notification do this for us via lcd/backlight device */
508 return 0;
509}
510
511static void picolcd_fb_destroy(struct fb_info *info)
512{
513 struct picolcd_data *data = info->par;
514 info->par = NULL;
515 if (data)
516 data->fb_info = NULL;
517 fb_deferred_io_cleanup(info);
518 framebuffer_release(info);
519}
520
521static int picolcd_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
522{
523 __u32 bpp = var->bits_per_pixel;
524 __u32 activate = var->activate;
525
526 /* only allow 1/8 bit depth (8-bit is grayscale) */
527 *var = picolcdfb_var;
528 var->activate = activate;
529 if (bpp >= 8)
530 var->bits_per_pixel = 8;
531 else
532 var->bits_per_pixel = 1;
533 return 0;
534}
535
536static int picolcd_set_par(struct fb_info *info)
537{
538 struct picolcd_data *data = info->par;
539 u8 *o_fb, *n_fb;
540 if (info->var.bits_per_pixel == data->fb_bpp)
541 return 0;
542 /* switch between 1/8 bit depths */
543 if (info->var.bits_per_pixel != 1 && info->var.bits_per_pixel != 8)
544 return -EINVAL;
545
546 o_fb = data->fb_bitmap;
547 n_fb = vmalloc(PICOLCDFB_SIZE*info->var.bits_per_pixel);
548 if (!n_fb)
549 return -ENOMEM;
550
551 fb_deferred_io_cleanup(info);
552 /* translate FB content to new bits-per-pixel */
553 if (info->var.bits_per_pixel == 1) {
554 int i, b;
555 for (i = 0; i < PICOLCDFB_SIZE; i++) {
556 u8 p = 0;
557 for (b = 0; b < 8; b++) {
558 p <<= 1;
559 p |= o_fb[i*8+b] ? 0x01 : 0x00;
560 }
561 }
562 info->fix.visual = FB_VISUAL_MONO01;
563 info->fix.line_length = PICOLCDFB_WIDTH / 8;
564 } else {
565 int i;
566 for (i = 0; i < PICOLCDFB_SIZE * 8; i++)
567 n_fb[i] = o_fb[i/8] & (0x01 << (7 - i % 8)) ? 0xff : 0x00;
568 info->fix.visual = FB_VISUAL_TRUECOLOR;
569 info->fix.line_length = PICOLCDFB_WIDTH;
570 }
571
572 data->fb_bitmap = n_fb;
573 data->fb_bpp = info->var.bits_per_pixel;
574 info->screen_base = (char __force __iomem *)n_fb;
575 info->fix.smem_start = (unsigned long)n_fb;
576 info->fix.smem_len = PICOLCDFB_SIZE*data->fb_bpp;
577 fb_deferred_io_init(info);
578 vfree(o_fb);
579 return 0;
580}
581
582/* Note this can't be const because of struct fb_info definition */
583static struct fb_ops picolcdfb_ops = {
584 .owner = THIS_MODULE,
585 .fb_destroy = picolcd_fb_destroy,
586 .fb_read = fb_sys_read,
587 .fb_write = picolcd_fb_write,
588 .fb_blank = picolcd_fb_blank,
589 .fb_fillrect = picolcd_fb_fillrect,
590 .fb_copyarea = picolcd_fb_copyarea,
591 .fb_imageblit = picolcd_fb_imageblit,
592 .fb_check_var = picolcd_fb_check_var,
593 .fb_set_par = picolcd_set_par,
594};
595
596
597/* Callback from deferred IO workqueue */
598static void picolcd_fb_deferred_io(struct fb_info *info, struct list_head *pagelist)
599{
600 picolcd_fb_update(info->par);
601}
602
603static const struct fb_deferred_io picolcd_fb_defio = {
604 .delay = HZ / PICOLCDFB_UPDATE_RATE_DEFAULT,
605 .deferred_io = picolcd_fb_deferred_io,
606};
607
608
609/*
610 * The "fb_update_rate" sysfs attribute
611 */
612static ssize_t picolcd_fb_update_rate_show(struct device *dev,
613 struct device_attribute *attr, char *buf)
614{
615 struct picolcd_data *data = dev_get_drvdata(dev);
616 unsigned i, fb_update_rate = data->fb_update_rate;
617 size_t ret = 0;
618
619 for (i = 1; i <= PICOLCDFB_UPDATE_RATE_LIMIT; i++)
620 if (ret >= PAGE_SIZE)
621 break;
622 else if (i == fb_update_rate)
623 ret += snprintf(buf+ret, PAGE_SIZE-ret, "[%u] ", i);
624 else
625 ret += snprintf(buf+ret, PAGE_SIZE-ret, "%u ", i);
626 if (ret > 0)
627 buf[min(ret, (size_t)PAGE_SIZE)-1] = '\n';
628 return ret;
629}
630
631static ssize_t picolcd_fb_update_rate_store(struct device *dev,
632 struct device_attribute *attr, const char *buf, size_t count)
633{
634 struct picolcd_data *data = dev_get_drvdata(dev);
635 int i;
636 unsigned u;
637
638 if (count < 1 || count > 10)
639 return -EINVAL;
640
641 i = sscanf(buf, "%u", &u);
642 if (i != 1)
643 return -EINVAL;
644
645 if (u > PICOLCDFB_UPDATE_RATE_LIMIT)
646 return -ERANGE;
647 else if (u == 0)
648 u = PICOLCDFB_UPDATE_RATE_DEFAULT;
649
650 data->fb_update_rate = u;
651 data->fb_defio.delay = HZ / data->fb_update_rate;
652 return count;
653}
654
655static DEVICE_ATTR(fb_update_rate, 0666, picolcd_fb_update_rate_show,
656 picolcd_fb_update_rate_store);
657
658/* initialize Framebuffer device */
659static int picolcd_init_framebuffer(struct picolcd_data *data)
660{
661 struct device *dev = &data->hdev->dev;
662 struct fb_info *info = NULL;
663 int error = -ENOMEM;
664 u8 *fb_vbitmap = NULL;
665 u8 *fb_bitmap = NULL;
666
667 fb_bitmap = vmalloc(PICOLCDFB_SIZE*picolcdfb_var.bits_per_pixel);
668 if (fb_bitmap == NULL) {
669 dev_err(dev, "can't get a free page for framebuffer\n");
670 goto err_nomem;
671 }
672
673 fb_vbitmap = kmalloc(PICOLCDFB_SIZE, GFP_KERNEL);
674 if (fb_vbitmap == NULL) {
675 dev_err(dev, "can't alloc vbitmap image buffer\n");
676 goto err_nomem;
677 }
678
679 data->fb_update_rate = PICOLCDFB_UPDATE_RATE_DEFAULT;
680 data->fb_defio = picolcd_fb_defio;
681 info = framebuffer_alloc(0, dev);
682 if (info == NULL) {
683 dev_err(dev, "failed to allocate a framebuffer\n");
684 goto err_nomem;
685 }
686
687 info->fbdefio = &data->fb_defio;
688 info->screen_base = (char __force __iomem *)fb_bitmap;
689 info->fbops = &picolcdfb_ops;
690 info->var = picolcdfb_var;
691 info->fix = picolcdfb_fix;
692 info->fix.smem_len = PICOLCDFB_SIZE;
693 info->fix.smem_start = (unsigned long)fb_bitmap;
694 info->par = data;
695 info->flags = FBINFO_FLAG_DEFAULT;
696
697 data->fb_vbitmap = fb_vbitmap;
698 data->fb_bitmap = fb_bitmap;
699 data->fb_bpp = picolcdfb_var.bits_per_pixel;
700 error = picolcd_fb_reset(data, 1);
701 if (error) {
702 dev_err(dev, "failed to configure display\n");
703 goto err_cleanup;
704 }
705 error = device_create_file(dev, &dev_attr_fb_update_rate);
706 if (error) {
707 dev_err(dev, "failed to create sysfs attributes\n");
708 goto err_cleanup;
709 }
710 data->fb_info = info;
711 error = register_framebuffer(info);
712 if (error) {
713 dev_err(dev, "failed to register framebuffer\n");
714 goto err_sysfs;
715 }
716 fb_deferred_io_init(info);
717 /* schedule first output of framebuffer */
718 schedule_delayed_work(&info->deferred_work, 0);
719 return 0;
720
721err_sysfs:
722 device_remove_file(dev, &dev_attr_fb_update_rate);
723err_cleanup:
724 data->fb_vbitmap = NULL;
725 data->fb_bitmap = NULL;
726 data->fb_bpp = 0;
727 data->fb_info = NULL;
728
729err_nomem:
730 framebuffer_release(info);
731 vfree(fb_bitmap);
732 kfree(fb_vbitmap);
733 return error;
734}
735
736static void picolcd_exit_framebuffer(struct picolcd_data *data)
737{
738 struct fb_info *info = data->fb_info;
739 u8 *fb_vbitmap = data->fb_vbitmap;
740 u8 *fb_bitmap = data->fb_bitmap;
741
742 if (!info)
743 return;
744
745 data->fb_vbitmap = NULL;
746 data->fb_bitmap = NULL;
747 data->fb_bpp = 0;
748 data->fb_info = NULL;
749 device_remove_file(&data->hdev->dev, &dev_attr_fb_update_rate);
750 fb_deferred_io_cleanup(info);
751 unregister_framebuffer(info);
752 vfree(fb_bitmap);
753 kfree(fb_vbitmap);
754}
755
756#define picolcd_fbinfo(d) ((d)->fb_info)
757#else
758static inline int picolcd_fb_reset(struct picolcd_data *data, int clear)
759{
760 return 0;
761}
762static inline int picolcd_init_framebuffer(struct picolcd_data *data)
763{
764 return 0;
765}
766static void picolcd_exit_framebuffer(struct picolcd_data *data)
767{
768}
769#define picolcd_fbinfo(d) NULL
770#endif /* CONFIG_HID_PICOLCD_FB */
771
772#ifdef CONFIG_HID_PICOLCD_BACKLIGHT
773/*
774 * backlight class device
775 */
776static int picolcd_get_brightness(struct backlight_device *bdev)
777{
778 struct picolcd_data *data = bl_get_data(bdev);
779 return data->lcd_brightness;
780}
781
782static int picolcd_set_brightness(struct backlight_device *bdev)
783{
784 struct picolcd_data *data = bl_get_data(bdev);
785 struct hid_report *report = picolcd_out_report(REPORT_BRIGHTNESS, data->hdev);
786 unsigned long flags;
787
788 if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
789 return -ENODEV;
790
791 data->lcd_brightness = bdev->props.brightness & 0x0ff;
792 data->lcd_power = bdev->props.power;
793 spin_lock_irqsave(&data->lock, flags);
794 hid_set_field(report->field[0], 0, data->lcd_power == FB_BLANK_UNBLANK ? data->lcd_brightness : 0);
795 usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
796 spin_unlock_irqrestore(&data->lock, flags);
797 return 0;
798}
799
800static int picolcd_check_bl_fb(struct backlight_device *bdev, struct fb_info *fb)
801{
802 return fb && fb == picolcd_fbinfo((struct picolcd_data *)bl_get_data(bdev));
803}
804
805static const struct backlight_ops picolcd_blops = {
806 .update_status = picolcd_set_brightness,
807 .get_brightness = picolcd_get_brightness,
808 .check_fb = picolcd_check_bl_fb,
809};
810
811static int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *report)
812{
813 struct device *dev = &data->hdev->dev;
814 struct backlight_device *bdev;
815 struct backlight_properties props;
816 if (!report)
817 return -ENODEV;
818 if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
819 report->field[0]->report_size != 8) {
820 dev_err(dev, "unsupported BRIGHTNESS report");
821 return -EINVAL;
822 }
823
824 memset(&props, 0, sizeof(props));
825 props.max_brightness = 0xff;
826 bdev = backlight_device_register(dev_name(dev), dev, data,
827 &picolcd_blops, &props);
828 if (IS_ERR(bdev)) {
829 dev_err(dev, "failed to register backlight\n");
830 return PTR_ERR(bdev);
831 }
832 bdev->props.brightness = 0xff;
833 data->lcd_brightness = 0xff;
834 data->backlight = bdev;
835 picolcd_set_brightness(bdev);
836 return 0;
837}
838
839static void picolcd_exit_backlight(struct picolcd_data *data)
840{
841 struct backlight_device *bdev = data->backlight;
842
843 data->backlight = NULL;
844 if (bdev)
845 backlight_device_unregister(bdev);
846}
847
848static inline int picolcd_resume_backlight(struct picolcd_data *data)
849{
850 if (!data->backlight)
851 return 0;
852 return picolcd_set_brightness(data->backlight);
853}
854
855#else
856static inline int picolcd_init_backlight(struct picolcd_data *data,
857 struct hid_report *report)
858{
859 return 0;
860}
861static inline void picolcd_exit_backlight(struct picolcd_data *data)
862{
863}
864static inline int picolcd_resume_backlight(struct picolcd_data *data)
865{
866 return 0;
867}
868#endif /* CONFIG_HID_PICOLCD_BACKLIGHT */
869
870#ifdef CONFIG_HID_PICOLCD_LCD
871/*
872 * lcd class device
873 */
874static int picolcd_get_contrast(struct lcd_device *ldev)
875{
876 struct picolcd_data *data = lcd_get_data(ldev);
877 return data->lcd_contrast;
878}
879
880static int picolcd_set_contrast(struct lcd_device *ldev, int contrast)
881{
882 struct picolcd_data *data = lcd_get_data(ldev);
883 struct hid_report *report = picolcd_out_report(REPORT_CONTRAST, data->hdev);
884 unsigned long flags;
885
886 if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
887 return -ENODEV;
888
889 data->lcd_contrast = contrast & 0x0ff;
890 spin_lock_irqsave(&data->lock, flags);
891 hid_set_field(report->field[0], 0, data->lcd_contrast);
892 usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
893 spin_unlock_irqrestore(&data->lock, flags);
894 return 0;
895}
896
897static int picolcd_check_lcd_fb(struct lcd_device *ldev, struct fb_info *fb)
898{
899 return fb && fb == picolcd_fbinfo((struct picolcd_data *)lcd_get_data(ldev));
900}
901
902static struct lcd_ops picolcd_lcdops = {
903 .get_contrast = picolcd_get_contrast,
904 .set_contrast = picolcd_set_contrast,
905 .check_fb = picolcd_check_lcd_fb,
906};
907
908static int picolcd_init_lcd(struct picolcd_data *data, struct hid_report *report)
909{
910 struct device *dev = &data->hdev->dev;
911 struct lcd_device *ldev;
912
913 if (!report)
914 return -ENODEV;
915 if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
916 report->field[0]->report_size != 8) {
917 dev_err(dev, "unsupported CONTRAST report");
918 return -EINVAL;
919 }
920
921 ldev = lcd_device_register(dev_name(dev), dev, data, &picolcd_lcdops);
922 if (IS_ERR(ldev)) {
923 dev_err(dev, "failed to register LCD\n");
924 return PTR_ERR(ldev);
925 }
926 ldev->props.max_contrast = 0x0ff;
927 data->lcd_contrast = 0xe5;
928 data->lcd = ldev;
929 picolcd_set_contrast(ldev, 0xe5);
930 return 0;
931}
932
933static void picolcd_exit_lcd(struct picolcd_data *data)
934{
935 struct lcd_device *ldev = data->lcd;
936
937 data->lcd = NULL;
938 if (ldev)
939 lcd_device_unregister(ldev);
940}
941
942static inline int picolcd_resume_lcd(struct picolcd_data *data)
943{
944 if (!data->lcd)
945 return 0;
946 return picolcd_set_contrast(data->lcd, data->lcd_contrast);
947}
948#else
949static inline int picolcd_init_lcd(struct picolcd_data *data,
950 struct hid_report *report)
951{
952 return 0;
953}
954static inline void picolcd_exit_lcd(struct picolcd_data *data)
955{
956}
957static inline int picolcd_resume_lcd(struct picolcd_data *data)
958{
959 return 0;
960}
961#endif /* CONFIG_HID_PICOLCD_LCD */
962
963#ifdef CONFIG_HID_PICOLCD_LEDS
964/**
965 * LED class device
966 */
967static void picolcd_leds_set(struct picolcd_data *data)
968{
969 struct hid_report *report;
970 unsigned long flags;
971
972 if (!data->led[0])
973 return;
974 report = picolcd_out_report(REPORT_LED_STATE, data->hdev);
975 if (!report || report->maxfield != 1 || report->field[0]->report_count != 1)
976 return;
977
978 spin_lock_irqsave(&data->lock, flags);
979 hid_set_field(report->field[0], 0, data->led_state);
980 usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
981 spin_unlock_irqrestore(&data->lock, flags);
982}
983
984static void picolcd_led_set_brightness(struct led_classdev *led_cdev,
985 enum led_brightness value)
986{
987 struct device *dev;
988 struct hid_device *hdev;
989 struct picolcd_data *data;
990 int i, state = 0;
991
992 dev = led_cdev->dev->parent;
993 hdev = container_of(dev, struct hid_device, dev);
994 data = hid_get_drvdata(hdev);
995 for (i = 0; i < 8; i++) {
996 if (led_cdev != data->led[i])
997 continue;
998 state = (data->led_state >> i) & 1;
999 if (value == LED_OFF && state) {
1000 data->led_state &= ~(1 << i);
1001 picolcd_leds_set(data);
1002 } else if (value != LED_OFF && !state) {
1003 data->led_state |= 1 << i;
1004 picolcd_leds_set(data);
1005 }
1006 break;
1007 }
1008}
1009
1010static enum led_brightness picolcd_led_get_brightness(struct led_classdev *led_cdev)
1011{
1012 struct device *dev;
1013 struct hid_device *hdev;
1014 struct picolcd_data *data;
1015 int i, value = 0;
1016
1017 dev = led_cdev->dev->parent;
1018 hdev = container_of(dev, struct hid_device, dev);
1019 data = hid_get_drvdata(hdev);
1020 for (i = 0; i < 8; i++)
1021 if (led_cdev == data->led[i]) {
1022 value = (data->led_state >> i) & 1;
1023 break;
1024 }
1025 return value ? LED_FULL : LED_OFF;
1026}
1027
1028static int picolcd_init_leds(struct picolcd_data *data, struct hid_report *report)
1029{
1030 struct device *dev = &data->hdev->dev;
1031 struct led_classdev *led;
1032 size_t name_sz = strlen(dev_name(dev)) + 8;
1033 char *name;
1034 int i, ret = 0;
1035
1036 if (!report)
1037 return -ENODEV;
1038 if (report->maxfield != 1 || report->field[0]->report_count != 1 ||
1039 report->field[0]->report_size != 8) {
1040 dev_err(dev, "unsupported LED_STATE report");
1041 return -EINVAL;
1042 }
1043
1044 for (i = 0; i < 8; i++) {
1045 led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
1046 if (!led) {
1047 dev_err(dev, "can't allocate memory for LED %d\n", i);
1048 ret = -ENOMEM;
1049 goto err;
1050 }
1051 name = (void *)(&led[1]);
1052 snprintf(name, name_sz, "%s::GPO%d", dev_name(dev), i);
1053 led->name = name;
1054 led->brightness = 0;
1055 led->max_brightness = 1;
1056 led->brightness_get = picolcd_led_get_brightness;
1057 led->brightness_set = picolcd_led_set_brightness;
1058
1059 data->led[i] = led;
1060 ret = led_classdev_register(dev, data->led[i]);
1061 if (ret) {
1062 data->led[i] = NULL;
1063 kfree(led);
1064 dev_err(dev, "can't register LED %d\n", i);
1065 goto err;
1066 }
1067 }
1068 return 0;
1069err:
1070 for (i = 0; i < 8; i++)
1071 if (data->led[i]) {
1072 led = data->led[i];
1073 data->led[i] = NULL;
1074 led_classdev_unregister(led);
1075 kfree(led);
1076 }
1077 return ret;
1078}
1079
1080static void picolcd_exit_leds(struct picolcd_data *data)
1081{
1082 struct led_classdev *led;
1083 int i;
1084
1085 for (i = 0; i < 8; i++) {
1086 led = data->led[i];
1087 data->led[i] = NULL;
1088 if (!led)
1089 continue;
1090 led_classdev_unregister(led);
1091 kfree(led);
1092 }
1093}
1094
1095#else
1096static inline int picolcd_init_leds(struct picolcd_data *data,
1097 struct hid_report *report)
1098{
1099 return 0;
1100}
1101static void picolcd_exit_leds(struct picolcd_data *data)
1102{
1103}
1104static inline int picolcd_leds_set(struct picolcd_data *data)
1105{
1106 return 0;
1107}
1108#endif /* CONFIG_HID_PICOLCD_LEDS */
1109
1110/*
1111 * input class device
1112 */
1113static int picolcd_raw_keypad(struct picolcd_data *data,
1114 struct hid_report *report, u8 *raw_data, int size)
1115{
1116 /*
1117 * Keypad event
1118 * First and second data bytes list currently pressed keys,
1119 * 0x00 means no key and at most 2 keys may be pressed at same time
1120 */
1121 int i, j;
1122
1123 /* determine newly pressed keys */
1124 for (i = 0; i < size; i++) {
1125 unsigned int key_code;
1126 if (raw_data[i] == 0)
1127 continue;
1128 for (j = 0; j < sizeof(data->pressed_keys); j++)
1129 if (data->pressed_keys[j] == raw_data[i])
1130 goto key_already_down;
1131 for (j = 0; j < sizeof(data->pressed_keys); j++)
1132 if (data->pressed_keys[j] == 0) {
1133 data->pressed_keys[j] = raw_data[i];
1134 break;
1135 }
1136 input_event(data->input_keys, EV_MSC, MSC_SCAN, raw_data[i]);
1137 if (raw_data[i] < PICOLCD_KEYS)
1138 key_code = data->keycode[raw_data[i]];
1139 else
1140 key_code = KEY_UNKNOWN;
1141 if (key_code != KEY_UNKNOWN) {
1142 dbg_hid(PICOLCD_NAME " got key press for %u:%d",
1143 raw_data[i], key_code);
1144 input_report_key(data->input_keys, key_code, 1);
1145 }
1146 input_sync(data->input_keys);
1147key_already_down:
1148 continue;
1149 }
1150
1151 /* determine newly released keys */
1152 for (j = 0; j < sizeof(data->pressed_keys); j++) {
1153 unsigned int key_code;
1154 if (data->pressed_keys[j] == 0)
1155 continue;
1156 for (i = 0; i < size; i++)
1157 if (data->pressed_keys[j] == raw_data[i])
1158 goto key_still_down;
1159 input_event(data->input_keys, EV_MSC, MSC_SCAN, data->pressed_keys[j]);
1160 if (data->pressed_keys[j] < PICOLCD_KEYS)
1161 key_code = data->keycode[data->pressed_keys[j]];
1162 else
1163 key_code = KEY_UNKNOWN;
1164 if (key_code != KEY_UNKNOWN) {
1165 dbg_hid(PICOLCD_NAME " got key release for %u:%d",
1166 data->pressed_keys[j], key_code);
1167 input_report_key(data->input_keys, key_code, 0);
1168 }
1169 input_sync(data->input_keys);
1170 data->pressed_keys[j] = 0;
1171key_still_down:
1172 continue;
1173 }
1174 return 1;
1175}
1176
1177static int picolcd_raw_cir(struct picolcd_data *data,
1178 struct hid_report *report, u8 *raw_data, int size)
1179{
1180 /* Need understanding of CIR data format to implement ... */
1181 return 1;
1182}
1183
1184static int picolcd_check_version(struct hid_device *hdev)
1185{
1186 struct picolcd_data *data = hid_get_drvdata(hdev);
1187 struct picolcd_pending *verinfo;
1188 int ret = 0;
1189
1190 if (!data)
1191 return -ENODEV;
1192
1193 verinfo = picolcd_send_and_wait(hdev, REPORT_VERSION, NULL, 0);
1194 if (!verinfo) {
1195 dev_err(&hdev->dev, "no version response from PicoLCD");
1196 return -ENODEV;
1197 }
1198
1199 if (verinfo->raw_size == 2) {
1200 data->version[0] = verinfo->raw_data[1];
1201 data->version[1] = verinfo->raw_data[0];
1202 if (data->status & PICOLCD_BOOTLOADER) {
1203 dev_info(&hdev->dev, "PicoLCD, bootloader version %d.%d\n",
1204 verinfo->raw_data[1], verinfo->raw_data[0]);
1205 } else {
1206 dev_info(&hdev->dev, "PicoLCD, firmware version %d.%d\n",
1207 verinfo->raw_data[1], verinfo->raw_data[0]);
1208 }
1209 } else {
1210 dev_err(&hdev->dev, "confused, got unexpected version response from PicoLCD\n");
1211 ret = -EINVAL;
1212 }
1213 kfree(verinfo);
1214 return ret;
1215}
1216
1217/*
1218 * Reset our device and wait for answer to VERSION request
1219 */
1220static int picolcd_reset(struct hid_device *hdev)
1221{
1222 struct picolcd_data *data = hid_get_drvdata(hdev);
1223 struct hid_report *report = picolcd_out_report(REPORT_RESET, hdev);
1224 unsigned long flags;
1225 int error;
1226
1227 if (!data || !report || report->maxfield != 1)
1228 return -ENODEV;
1229
1230 spin_lock_irqsave(&data->lock, flags);
1231 if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER)
1232 data->status |= PICOLCD_BOOTLOADER;
1233
1234 /* perform the reset */
1235 hid_set_field(report->field[0], 0, 1);
1236 usbhid_submit_report(hdev, report, USB_DIR_OUT);
1237 spin_unlock_irqrestore(&data->lock, flags);
1238
1239 error = picolcd_check_version(hdev);
1240 if (error)
1241 return error;
1242
1243 picolcd_resume_lcd(data);
1244 picolcd_resume_backlight(data);
1245#ifdef CONFIG_HID_PICOLCD_FB
1246 if (data->fb_info)
1247 schedule_delayed_work(&data->fb_info->deferred_work, 0);
1248#endif /* CONFIG_HID_PICOLCD_FB */
1249
1250 picolcd_leds_set(data);
1251 return 0;
1252}
1253
1254/*
1255 * The "operation_mode" sysfs attribute
1256 */
1257static ssize_t picolcd_operation_mode_show(struct device *dev,
1258 struct device_attribute *attr, char *buf)
1259{
1260 struct picolcd_data *data = dev_get_drvdata(dev);
1261
1262 if (data->status & PICOLCD_BOOTLOADER)
1263 return snprintf(buf, PAGE_SIZE, "[bootloader] lcd\n");
1264 else
1265 return snprintf(buf, PAGE_SIZE, "bootloader [lcd]\n");
1266}
1267
1268static ssize_t picolcd_operation_mode_store(struct device *dev,
1269 struct device_attribute *attr, const char *buf, size_t count)
1270{
1271 struct picolcd_data *data = dev_get_drvdata(dev);
1272 struct hid_report *report = NULL;
1273 size_t cnt = count;
1274 int timeout = data->opmode_delay;
1275 unsigned long flags;
1276
1277 if (cnt >= 3 && strncmp("lcd", buf, 3) == 0) {
1278 if (data->status & PICOLCD_BOOTLOADER)
1279 report = picolcd_out_report(REPORT_EXIT_FLASHER, data->hdev);
1280 buf += 3;
1281 cnt -= 3;
1282 } else if (cnt >= 10 && strncmp("bootloader", buf, 10) == 0) {
1283 if (!(data->status & PICOLCD_BOOTLOADER))
1284 report = picolcd_out_report(REPORT_EXIT_KEYBOARD, data->hdev);
1285 buf += 10;
1286 cnt -= 10;
1287 }
1288 if (!report)
1289 return -EINVAL;
1290
1291 while (cnt > 0 && (buf[cnt-1] == '\n' || buf[cnt-1] == '\r'))
1292 cnt--;
1293 if (cnt != 0)
1294 return -EINVAL;
1295
1296 spin_lock_irqsave(&data->lock, flags);
1297 hid_set_field(report->field[0], 0, timeout & 0xff);
1298 hid_set_field(report->field[0], 1, (timeout >> 8) & 0xff);
1299 usbhid_submit_report(data->hdev, report, USB_DIR_OUT);
1300 spin_unlock_irqrestore(&data->lock, flags);
1301 return count;
1302}
1303
1304static DEVICE_ATTR(operation_mode, 0644, picolcd_operation_mode_show,
1305 picolcd_operation_mode_store);
1306
1307/*
1308 * The "operation_mode_delay" sysfs attribute
1309 */
1310static ssize_t picolcd_operation_mode_delay_show(struct device *dev,
1311 struct device_attribute *attr, char *buf)
1312{
1313 struct picolcd_data *data = dev_get_drvdata(dev);
1314
1315 return snprintf(buf, PAGE_SIZE, "%hu\n", data->opmode_delay);
1316}
1317
1318static ssize_t picolcd_operation_mode_delay_store(struct device *dev,
1319 struct device_attribute *attr, const char *buf, size_t count)
1320{
1321 struct picolcd_data *data = dev_get_drvdata(dev);
1322 unsigned u;
1323 if (sscanf(buf, "%u", &u) != 1)
1324 return -EINVAL;
1325 if (u > 30000)
1326 return -EINVAL;
1327 else
1328 data->opmode_delay = u;
1329 return count;
1330}
1331
1332static DEVICE_ATTR(operation_mode_delay, 0644, picolcd_operation_mode_delay_show,
1333 picolcd_operation_mode_delay_store);
1334
1335
1336#ifdef CONFIG_DEBUG_FS
1337/*
1338 * The "reset" file
1339 */
1340static int picolcd_debug_reset_show(struct seq_file *f, void *p)
1341{
1342 if (picolcd_fbinfo((struct picolcd_data *)f->private))
1343 seq_printf(f, "all fb\n");
1344 else
1345 seq_printf(f, "all\n");
1346 return 0;
1347}
1348
1349static int picolcd_debug_reset_open(struct inode *inode, struct file *f)
1350{
1351 return single_open(f, picolcd_debug_reset_show, inode->i_private);
1352}
1353
1354static ssize_t picolcd_debug_reset_write(struct file *f, const char __user *user_buf,
1355 size_t count, loff_t *ppos)
1356{
1357 struct picolcd_data *data = ((struct seq_file *)f->private_data)->private;
1358 char buf[32];
1359 size_t cnt = min(count, sizeof(buf)-1);
1360 if (copy_from_user(buf, user_buf, cnt))
1361 return -EFAULT;
1362
1363 while (cnt > 0 && (buf[cnt-1] == ' ' || buf[cnt-1] == '\n'))
1364 cnt--;
1365 buf[cnt] = '\0';
1366 if (strcmp(buf, "all") == 0) {
1367 picolcd_reset(data->hdev);
1368 picolcd_fb_reset(data, 1);
1369 } else if (strcmp(buf, "fb") == 0) {
1370 picolcd_fb_reset(data, 1);
1371 } else {
1372 return -EINVAL;
1373 }
1374 return count;
1375}
1376
1377static const struct file_operations picolcd_debug_reset_fops = {
1378 .owner = THIS_MODULE,
1379 .open = picolcd_debug_reset_open,
1380 .read = seq_read,
1381 .llseek = seq_lseek,
1382 .write = picolcd_debug_reset_write,
1383 .release = single_release,
1384};
1385
1386/*
1387 * The "eeprom" file
1388 */
1389static int picolcd_debug_eeprom_open(struct inode *i, struct file *f)
1390{
1391 f->private_data = i->i_private;
1392 return 0;
1393}
1394
1395static ssize_t picolcd_debug_eeprom_read(struct file *f, char __user *u,
1396 size_t s, loff_t *off)
1397{
1398 struct picolcd_data *data = f->private_data;
1399 struct picolcd_pending *resp;
1400 u8 raw_data[3];
1401 ssize_t ret = -EIO;
1402
1403 if (s == 0)
1404 return -EINVAL;
1405 if (*off > 0x0ff)
1406 return 0;
1407
1408 /* prepare buffer with info about what we want to read (addr & len) */
1409 raw_data[0] = *off & 0xff;
1410 raw_data[1] = (*off >> 8) && 0xff;
1411 raw_data[2] = s < 20 ? s : 20;
1412 if (*off + raw_data[2] > 0xff)
1413 raw_data[2] = 0x100 - *off;
1414 resp = picolcd_send_and_wait(data->hdev, REPORT_EE_READ, raw_data,
1415 sizeof(raw_data));
1416 if (!resp)
1417 return -EIO;
1418
1419 if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) {
1420 /* successful read :) */
1421 ret = resp->raw_data[2];
1422 if (ret > s)
1423 ret = s;
1424 if (copy_to_user(u, resp->raw_data+3, ret))
1425 ret = -EFAULT;
1426 else
1427 *off += ret;
1428 } /* anything else is some kind of IO error */
1429
1430 kfree(resp);
1431 return ret;
1432}
1433
1434static ssize_t picolcd_debug_eeprom_write(struct file *f, const char __user *u,
1435 size_t s, loff_t *off)
1436{
1437 struct picolcd_data *data = f->private_data;
1438 struct picolcd_pending *resp;
1439 ssize_t ret = -EIO;
1440 u8 raw_data[23];
1441
1442 if (s == 0)
1443 return -EINVAL;
1444 if (*off > 0x0ff)
1445 return -ENOSPC;
1446
1447 memset(raw_data, 0, sizeof(raw_data));
1448 raw_data[0] = *off & 0xff;
1449 raw_data[1] = (*off >> 8) && 0xff;
1450 raw_data[2] = s < 20 ? s : 20;
1451 if (*off + raw_data[2] > 0xff)
1452 raw_data[2] = 0x100 - *off;
1453
1454 if (copy_from_user(raw_data+3, u, raw_data[2]))
1455 return -EFAULT;
1456 resp = picolcd_send_and_wait(data->hdev, REPORT_EE_WRITE, raw_data,
1457 sizeof(raw_data));
1458
1459 if (!resp)
1460 return -EIO;
1461
1462 if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) {
1463 /* check if written data matches */
1464 if (memcmp(raw_data, resp->raw_data, 3+raw_data[2]) == 0) {
1465 *off += raw_data[2];
1466 ret = raw_data[2];
1467 }
1468 }
1469 kfree(resp);
1470 return ret;
1471}
1472
1473/*
1474 * Notes:
1475 * - read/write happens in chunks of at most 20 bytes, it's up to userspace
1476 * to loop in order to get more data.
1477 * - on write errors on otherwise correct write request the bytes
1478 * that should have been written are in undefined state.
1479 */
1480static const struct file_operations picolcd_debug_eeprom_fops = {
1481 .owner = THIS_MODULE,
1482 .open = picolcd_debug_eeprom_open,
1483 .read = picolcd_debug_eeprom_read,
1484 .write = picolcd_debug_eeprom_write,
1485 .llseek = generic_file_llseek,
1486};
1487
1488/*
1489 * The "flash" file
1490 */
1491static int picolcd_debug_flash_open(struct inode *i, struct file *f)
1492{
1493 f->private_data = i->i_private;
1494 return 0;
1495}
1496
1497/* record a flash address to buf (bounds check to be done by caller) */
1498static int _picolcd_flash_setaddr(struct picolcd_data *data, u8 *buf, long off)
1499{
1500 buf[0] = off & 0xff;
1501 buf[1] = (off >> 8) & 0xff;
1502 if (data->addr_sz == 3)
1503 buf[2] = (off >> 16) & 0xff;
1504 return data->addr_sz == 2 ? 2 : 3;
1505}
1506
1507/* read a given size of data (bounds check to be done by caller) */
1508static ssize_t _picolcd_flash_read(struct picolcd_data *data, int report_id,
1509 char __user *u, size_t s, loff_t *off)
1510{
1511 struct picolcd_pending *resp;
1512 u8 raw_data[4];
1513 ssize_t ret = 0;
1514 int len_off, err = -EIO;
1515
1516 while (s > 0) {
1517 err = -EIO;
1518 len_off = _picolcd_flash_setaddr(data, raw_data, *off);
1519 raw_data[len_off] = s > 32 ? 32 : s;
1520 resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off+1);
1521 if (!resp || !resp->in_report)
1522 goto skip;
1523 if (resp->in_report->id == REPORT_MEMORY ||
1524 resp->in_report->id == REPORT_BL_READ_MEMORY) {
1525 if (memcmp(raw_data, resp->raw_data, len_off+1) != 0)
1526 goto skip;
1527 if (copy_to_user(u+ret, resp->raw_data+len_off+1, raw_data[len_off])) {
1528 err = -EFAULT;
1529 goto skip;
1530 }
1531 *off += raw_data[len_off];
1532 s -= raw_data[len_off];
1533 ret += raw_data[len_off];
1534 err = 0;
1535 }
1536skip:
1537 kfree(resp);
1538 if (err)
1539 return ret > 0 ? ret : err;
1540 }
1541 return ret;
1542}
1543
1544static ssize_t picolcd_debug_flash_read(struct file *f, char __user *u,
1545 size_t s, loff_t *off)
1546{
1547 struct picolcd_data *data = f->private_data;
1548
1549 if (s == 0)
1550 return -EINVAL;
1551 if (*off > 0x05fff)
1552 return 0;
1553 if (*off + s > 0x05fff)
1554 s = 0x06000 - *off;
1555
1556 if (data->status & PICOLCD_BOOTLOADER)
1557 return _picolcd_flash_read(data, REPORT_BL_READ_MEMORY, u, s, off);
1558 else
1559 return _picolcd_flash_read(data, REPORT_READ_MEMORY, u, s, off);
1560}
1561
1562/* erase block aligned to 64bytes boundary */
1563static ssize_t _picolcd_flash_erase64(struct picolcd_data *data, int report_id,
1564 loff_t *off)
1565{
1566 struct picolcd_pending *resp;
1567 u8 raw_data[3];
1568 int len_off;
1569 ssize_t ret = -EIO;
1570
1571 if (*off & 0x3f)
1572 return -EINVAL;
1573
1574 len_off = _picolcd_flash_setaddr(data, raw_data, *off);
1575 resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off);
1576 if (!resp || !resp->in_report)
1577 goto skip;
1578 if (resp->in_report->id == REPORT_MEMORY ||
1579 resp->in_report->id == REPORT_BL_ERASE_MEMORY) {
1580 if (memcmp(raw_data, resp->raw_data, len_off) != 0)
1581 goto skip;
1582 ret = 0;
1583 }
1584skip:
1585 kfree(resp);
1586 return ret;
1587}
1588
1589/* write a given size of data (bounds check to be done by caller) */
1590static ssize_t _picolcd_flash_write(struct picolcd_data *data, int report_id,
1591 const char __user *u, size_t s, loff_t *off)
1592{
1593 struct picolcd_pending *resp;
1594 u8 raw_data[36];
1595 ssize_t ret = 0;
1596 int len_off, err = -EIO;
1597
1598 while (s > 0) {
1599 err = -EIO;
1600 len_off = _picolcd_flash_setaddr(data, raw_data, *off);
1601 raw_data[len_off] = s > 32 ? 32 : s;
1602 if (copy_from_user(raw_data+len_off+1, u, raw_data[len_off])) {
1603 err = -EFAULT;
1604 goto skip;
1605 }
1606 resp = picolcd_send_and_wait(data->hdev, report_id, raw_data,
1607 len_off+1+raw_data[len_off]);
1608 if (!resp || !resp->in_report)
1609 goto skip;
1610 if (resp->in_report->id == REPORT_MEMORY ||
1611 resp->in_report->id == REPORT_BL_WRITE_MEMORY) {
1612 if (memcmp(raw_data, resp->raw_data, len_off+1+raw_data[len_off]) != 0)
1613 goto skip;
1614 *off += raw_data[len_off];
1615 s -= raw_data[len_off];
1616 ret += raw_data[len_off];
1617 err = 0;
1618 }
1619skip:
1620 kfree(resp);
1621 if (err)
1622 break;
1623 }
1624 return ret > 0 ? ret : err;
1625}
1626
1627static ssize_t picolcd_debug_flash_write(struct file *f, const char __user *u,
1628 size_t s, loff_t *off)
1629{
1630 struct picolcd_data *data = f->private_data;
1631 ssize_t err, ret = 0;
1632 int report_erase, report_write;
1633
1634 if (s == 0)
1635 return -EINVAL;
1636 if (*off > 0x5fff)
1637 return -ENOSPC;
1638 if (s & 0x3f)
1639 return -EINVAL;
1640 if (*off & 0x3f)
1641 return -EINVAL;
1642
1643 if (data->status & PICOLCD_BOOTLOADER) {
1644 report_erase = REPORT_BL_ERASE_MEMORY;
1645 report_write = REPORT_BL_WRITE_MEMORY;
1646 } else {
1647 report_erase = REPORT_ERASE_MEMORY;
1648 report_write = REPORT_WRITE_MEMORY;
1649 }
1650 mutex_lock(&data->mutex_flash);
1651 while (s > 0) {
1652 err = _picolcd_flash_erase64(data, report_erase, off);
1653 if (err)
1654 break;
1655 err = _picolcd_flash_write(data, report_write, u, 64, off);
1656 if (err < 0)
1657 break;
1658 ret += err;
1659 *off += err;
1660 s -= err;
1661 if (err != 64)
1662 break;
1663 }
1664 mutex_unlock(&data->mutex_flash);
1665 return ret > 0 ? ret : err;
1666}
1667
1668/*
1669 * Notes:
1670 * - concurrent writing is prevented by mutex and all writes must be
1671 * n*64 bytes and 64-byte aligned, each write being preceeded by an
1672 * ERASE which erases a 64byte block.
1673 * If less than requested was written or an error is returned for an
1674 * otherwise correct write request the next 64-byte block which should
1675 * have been written is in undefined state (mostly: original, erased,
1676 * (half-)written with write error)
1677 * - reading can happend without special restriction
1678 */
1679static const struct file_operations picolcd_debug_flash_fops = {
1680 .owner = THIS_MODULE,
1681 .open = picolcd_debug_flash_open,
1682 .read = picolcd_debug_flash_read,
1683 .write = picolcd_debug_flash_write,
1684 .llseek = generic_file_llseek,
1685};
1686
1687
1688/*
1689 * Helper code for HID report level dumping/debugging
1690 */
1691static const char *error_codes[] = {
1692 "success", "parameter missing", "data_missing", "block readonly",
1693 "block not erasable", "block too big", "section overflow",
1694 "invalid command length", "invalid data length",
1695};
1696
1697static void dump_buff_as_hex(char *dst, size_t dst_sz, const u8 *data,
1698 const size_t data_len)
1699{
1700 int i, j;
1701 for (i = j = 0; i < data_len && j + 3 < dst_sz; i++) {
1702 dst[j++] = hex_asc[(data[i] >> 4) & 0x0f];
1703 dst[j++] = hex_asc[data[i] & 0x0f];
1704 dst[j++] = ' ';
1705 }
1706 if (j < dst_sz) {
1707 dst[j--] = '\0';
1708 dst[j] = '\n';
1709 } else
1710 dst[j] = '\0';
1711}
1712
1713static void picolcd_debug_out_report(struct picolcd_data *data,
1714 struct hid_device *hdev, struct hid_report *report)
1715{
1716 u8 raw_data[70];
1717 int raw_size = (report->size >> 3) + 1;
1718 char *buff;
1719#define BUFF_SZ 256
1720
1721 /* Avoid unnecessary overhead if debugfs is disabled */
1722 if (!hdev->debug_events)
1723 return;
1724
1725 buff = kmalloc(BUFF_SZ, GFP_ATOMIC);
1726 if (!buff)
1727 return;
1728
1729 snprintf(buff, BUFF_SZ, "\nout report %d (size %d) = ",
1730 report->id, raw_size);
1731 hid_debug_event(hdev, buff);
1732 if (raw_size + 5 > sizeof(raw_data)) {
1733 hid_debug_event(hdev, " TOO BIG\n");
1734 return;
1735 } else {
1736 raw_data[0] = report->id;
1737 hid_output_report(report, raw_data);
1738 dump_buff_as_hex(buff, BUFF_SZ, raw_data, raw_size);
1739 hid_debug_event(hdev, buff);
1740 }
1741
1742 switch (report->id) {
1743 case REPORT_LED_STATE:
1744 /* 1 data byte with GPO state */
1745 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1746 "REPORT_LED_STATE", report->id, raw_size-1);
1747 hid_debug_event(hdev, buff);
1748 snprintf(buff, BUFF_SZ, "\tGPO state: 0x%02x\n", raw_data[1]);
1749 hid_debug_event(hdev, buff);
1750 break;
1751 case REPORT_BRIGHTNESS:
1752 /* 1 data byte with brightness */
1753 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1754 "REPORT_BRIGHTNESS", report->id, raw_size-1);
1755 hid_debug_event(hdev, buff);
1756 snprintf(buff, BUFF_SZ, "\tBrightness: 0x%02x\n", raw_data[1]);
1757 hid_debug_event(hdev, buff);
1758 break;
1759 case REPORT_CONTRAST:
1760 /* 1 data byte with contrast */
1761 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1762 "REPORT_CONTRAST", report->id, raw_size-1);
1763 hid_debug_event(hdev, buff);
1764 snprintf(buff, BUFF_SZ, "\tContrast: 0x%02x\n", raw_data[1]);
1765 hid_debug_event(hdev, buff);
1766 break;
1767 case REPORT_RESET:
1768 /* 2 data bytes with reset duration in ms */
1769 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1770 "REPORT_RESET", report->id, raw_size-1);
1771 hid_debug_event(hdev, buff);
1772 snprintf(buff, BUFF_SZ, "\tDuration: 0x%02x%02x (%dms)\n",
1773 raw_data[2], raw_data[1], raw_data[2] << 8 | raw_data[1]);
1774 hid_debug_event(hdev, buff);
1775 break;
1776 case REPORT_LCD_CMD:
1777 /* 63 data bytes with LCD commands */
1778 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1779 "REPORT_LCD_CMD", report->id, raw_size-1);
1780 hid_debug_event(hdev, buff);
1781 /* TODO: format decoding */
1782 break;
1783 case REPORT_LCD_DATA:
1784 /* 63 data bytes with LCD data */
1785 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1786 "REPORT_LCD_CMD", report->id, raw_size-1);
1787 /* TODO: format decoding */
1788 hid_debug_event(hdev, buff);
1789 break;
1790 case REPORT_LCD_CMD_DATA:
1791 /* 63 data bytes with LCD commands and data */
1792 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1793 "REPORT_LCD_CMD", report->id, raw_size-1);
1794 /* TODO: format decoding */
1795 hid_debug_event(hdev, buff);
1796 break;
1797 case REPORT_EE_READ:
1798 /* 3 data bytes with read area description */
1799 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1800 "REPORT_EE_READ", report->id, raw_size-1);
1801 hid_debug_event(hdev, buff);
1802 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
1803 raw_data[2], raw_data[1]);
1804 hid_debug_event(hdev, buff);
1805 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
1806 hid_debug_event(hdev, buff);
1807 break;
1808 case REPORT_EE_WRITE:
1809 /* 3+1..20 data bytes with write area description */
1810 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1811 "REPORT_EE_WRITE", report->id, raw_size-1);
1812 hid_debug_event(hdev, buff);
1813 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
1814 raw_data[2], raw_data[1]);
1815 hid_debug_event(hdev, buff);
1816 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
1817 hid_debug_event(hdev, buff);
1818 if (raw_data[3] == 0) {
1819 snprintf(buff, BUFF_SZ, "\tNo data\n");
1820 } else if (raw_data[3] + 4 <= raw_size) {
1821 snprintf(buff, BUFF_SZ, "\tData: ");
1822 hid_debug_event(hdev, buff);
1823 dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
1824 } else {
1825 snprintf(buff, BUFF_SZ, "\tData overflowed\n");
1826 }
1827 hid_debug_event(hdev, buff);
1828 break;
1829 case REPORT_ERASE_MEMORY:
1830 case REPORT_BL_ERASE_MEMORY:
1831 /* 3 data bytes with pointer inside erase block */
1832 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1833 "REPORT_ERASE_MEMORY", report->id, raw_size-1);
1834 hid_debug_event(hdev, buff);
1835 switch (data->addr_sz) {
1836 case 2:
1837 snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x\n",
1838 raw_data[2], raw_data[1]);
1839 break;
1840 case 3:
1841 snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x%02x\n",
1842 raw_data[3], raw_data[2], raw_data[1]);
1843 break;
1844 default:
1845 snprintf(buff, BUFF_SZ, "\tNot supported\n");
1846 }
1847 hid_debug_event(hdev, buff);
1848 break;
1849 case REPORT_READ_MEMORY:
1850 case REPORT_BL_READ_MEMORY:
1851 /* 4 data bytes with read area description */
1852 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1853 "REPORT_READ_MEMORY", report->id, raw_size-1);
1854 hid_debug_event(hdev, buff);
1855 switch (data->addr_sz) {
1856 case 2:
1857 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
1858 raw_data[2], raw_data[1]);
1859 hid_debug_event(hdev, buff);
1860 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
1861 break;
1862 case 3:
1863 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n",
1864 raw_data[3], raw_data[2], raw_data[1]);
1865 hid_debug_event(hdev, buff);
1866 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]);
1867 break;
1868 default:
1869 snprintf(buff, BUFF_SZ, "\tNot supported\n");
1870 }
1871 hid_debug_event(hdev, buff);
1872 break;
1873 case REPORT_WRITE_MEMORY:
1874 case REPORT_BL_WRITE_MEMORY:
1875 /* 4+1..32 data bytes with write adrea description */
1876 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1877 "REPORT_WRITE_MEMORY", report->id, raw_size-1);
1878 hid_debug_event(hdev, buff);
1879 switch (data->addr_sz) {
1880 case 2:
1881 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
1882 raw_data[2], raw_data[1]);
1883 hid_debug_event(hdev, buff);
1884 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
1885 hid_debug_event(hdev, buff);
1886 if (raw_data[3] == 0) {
1887 snprintf(buff, BUFF_SZ, "\tNo data\n");
1888 } else if (raw_data[3] + 4 <= raw_size) {
1889 snprintf(buff, BUFF_SZ, "\tData: ");
1890 hid_debug_event(hdev, buff);
1891 dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
1892 } else {
1893 snprintf(buff, BUFF_SZ, "\tData overflowed\n");
1894 }
1895 break;
1896 case 3:
1897 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n",
1898 raw_data[3], raw_data[2], raw_data[1]);
1899 hid_debug_event(hdev, buff);
1900 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]);
1901 hid_debug_event(hdev, buff);
1902 if (raw_data[4] == 0) {
1903 snprintf(buff, BUFF_SZ, "\tNo data\n");
1904 } else if (raw_data[4] + 5 <= raw_size) {
1905 snprintf(buff, BUFF_SZ, "\tData: ");
1906 hid_debug_event(hdev, buff);
1907 dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]);
1908 } else {
1909 snprintf(buff, BUFF_SZ, "\tData overflowed\n");
1910 }
1911 break;
1912 default:
1913 snprintf(buff, BUFF_SZ, "\tNot supported\n");
1914 }
1915 hid_debug_event(hdev, buff);
1916 break;
1917 case REPORT_SPLASH_RESTART:
1918 /* TODO */
1919 break;
1920 case REPORT_EXIT_KEYBOARD:
1921 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1922 "REPORT_EXIT_KEYBOARD", report->id, raw_size-1);
1923 hid_debug_event(hdev, buff);
1924 snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n",
1925 raw_data[1] | (raw_data[2] << 8),
1926 raw_data[2], raw_data[1]);
1927 hid_debug_event(hdev, buff);
1928 break;
1929 case REPORT_VERSION:
1930 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1931 "REPORT_VERSION", report->id, raw_size-1);
1932 hid_debug_event(hdev, buff);
1933 break;
1934 case REPORT_DEVID:
1935 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1936 "REPORT_DEVID", report->id, raw_size-1);
1937 hid_debug_event(hdev, buff);
1938 break;
1939 case REPORT_SPLASH_SIZE:
1940 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1941 "REPORT_SPLASH_SIZE", report->id, raw_size-1);
1942 hid_debug_event(hdev, buff);
1943 break;
1944 case REPORT_HOOK_VERSION:
1945 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1946 "REPORT_HOOK_VERSION", report->id, raw_size-1);
1947 hid_debug_event(hdev, buff);
1948 break;
1949 case REPORT_EXIT_FLASHER:
1950 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1951 "REPORT_VERSION", report->id, raw_size-1);
1952 hid_debug_event(hdev, buff);
1953 snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n",
1954 raw_data[1] | (raw_data[2] << 8),
1955 raw_data[2], raw_data[1]);
1956 hid_debug_event(hdev, buff);
1957 break;
1958 default:
1959 snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
1960 "<unknown>", report->id, raw_size-1);
1961 hid_debug_event(hdev, buff);
1962 break;
1963 }
1964 wake_up_interruptible(&hdev->debug_wait);
1965 kfree(buff);
1966}
1967
1968static void picolcd_debug_raw_event(struct picolcd_data *data,
1969 struct hid_device *hdev, struct hid_report *report,
1970 u8 *raw_data, int size)
1971{
1972 char *buff;
1973
1974#define BUFF_SZ 256
1975 /* Avoid unnecessary overhead if debugfs is disabled */
1976 if (!hdev->debug_events)
1977 return;
1978
1979 buff = kmalloc(BUFF_SZ, GFP_ATOMIC);
1980 if (!buff)
1981 return;
1982
1983 switch (report->id) {
1984 case REPORT_ERROR_CODE:
1985 /* 2 data bytes with affected report and error code */
1986 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
1987 "REPORT_ERROR_CODE", report->id, size-1);
1988 hid_debug_event(hdev, buff);
1989 if (raw_data[2] < ARRAY_SIZE(error_codes))
1990 snprintf(buff, BUFF_SZ, "\tError code 0x%02x (%s) in reply to report 0x%02x\n",
1991 raw_data[2], error_codes[raw_data[2]], raw_data[1]);
1992 else
1993 snprintf(buff, BUFF_SZ, "\tError code 0x%02x in reply to report 0x%02x\n",
1994 raw_data[2], raw_data[1]);
1995 hid_debug_event(hdev, buff);
1996 break;
1997 case REPORT_KEY_STATE:
1998 /* 2 data bytes with key state */
1999 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2000 "REPORT_KEY_STATE", report->id, size-1);
2001 hid_debug_event(hdev, buff);
2002 if (raw_data[1] == 0)
2003 snprintf(buff, BUFF_SZ, "\tNo key pressed\n");
2004 else if (raw_data[2] == 0)
2005 snprintf(buff, BUFF_SZ, "\tOne key pressed: 0x%02x (%d)\n",
2006 raw_data[1], raw_data[1]);
2007 else
2008 snprintf(buff, BUFF_SZ, "\tTwo keys pressed: 0x%02x (%d), 0x%02x (%d)\n",
2009 raw_data[1], raw_data[1], raw_data[2], raw_data[2]);
2010 hid_debug_event(hdev, buff);
2011 break;
2012 case REPORT_IR_DATA:
2013 /* Up to 20 byes of IR scancode data */
2014 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2015 "REPORT_IR_DATA", report->id, size-1);
2016 hid_debug_event(hdev, buff);
2017 if (raw_data[1] == 0) {
2018 snprintf(buff, BUFF_SZ, "\tUnexpectedly 0 data length\n");
2019 hid_debug_event(hdev, buff);
2020 } else if (raw_data[1] + 1 <= size) {
2021 snprintf(buff, BUFF_SZ, "\tData length: %d\n\tIR Data: ",
2022 raw_data[1]-1);
2023 hid_debug_event(hdev, buff);
2024 dump_buff_as_hex(buff, BUFF_SZ, raw_data+2, raw_data[1]-1);
2025 hid_debug_event(hdev, buff);
2026 } else {
2027 snprintf(buff, BUFF_SZ, "\tOverflowing data length: %d\n",
2028 raw_data[1]-1);
2029 hid_debug_event(hdev, buff);
2030 }
2031 break;
2032 case REPORT_EE_DATA:
2033 /* Data buffer in response to REPORT_EE_READ or REPORT_EE_WRITE */
2034 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2035 "REPORT_EE_DATA", report->id, size-1);
2036 hid_debug_event(hdev, buff);
2037 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
2038 raw_data[2], raw_data[1]);
2039 hid_debug_event(hdev, buff);
2040 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
2041 hid_debug_event(hdev, buff);
2042 if (raw_data[3] == 0) {
2043 snprintf(buff, BUFF_SZ, "\tNo data\n");
2044 hid_debug_event(hdev, buff);
2045 } else if (raw_data[3] + 4 <= size) {
2046 snprintf(buff, BUFF_SZ, "\tData: ");
2047 hid_debug_event(hdev, buff);
2048 dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
2049 hid_debug_event(hdev, buff);
2050 } else {
2051 snprintf(buff, BUFF_SZ, "\tData overflowed\n");
2052 hid_debug_event(hdev, buff);
2053 }
2054 break;
2055 case REPORT_MEMORY:
2056 /* Data buffer in response to REPORT_READ_MEMORY or REPORT_WRTIE_MEMORY */
2057 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2058 "REPORT_MEMORY", report->id, size-1);
2059 hid_debug_event(hdev, buff);
2060 switch (data->addr_sz) {
2061 case 2:
2062 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
2063 raw_data[2], raw_data[1]);
2064 hid_debug_event(hdev, buff);
2065 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
2066 hid_debug_event(hdev, buff);
2067 if (raw_data[3] == 0) {
2068 snprintf(buff, BUFF_SZ, "\tNo data\n");
2069 } else if (raw_data[3] + 4 <= size) {
2070 snprintf(buff, BUFF_SZ, "\tData: ");
2071 hid_debug_event(hdev, buff);
2072 dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
2073 } else {
2074 snprintf(buff, BUFF_SZ, "\tData overflowed\n");
2075 }
2076 break;
2077 case 3:
2078 snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n",
2079 raw_data[3], raw_data[2], raw_data[1]);
2080 hid_debug_event(hdev, buff);
2081 snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]);
2082 hid_debug_event(hdev, buff);
2083 if (raw_data[4] == 0) {
2084 snprintf(buff, BUFF_SZ, "\tNo data\n");
2085 } else if (raw_data[4] + 5 <= size) {
2086 snprintf(buff, BUFF_SZ, "\tData: ");
2087 hid_debug_event(hdev, buff);
2088 dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]);
2089 } else {
2090 snprintf(buff, BUFF_SZ, "\tData overflowed\n");
2091 }
2092 break;
2093 default:
2094 snprintf(buff, BUFF_SZ, "\tNot supported\n");
2095 }
2096 hid_debug_event(hdev, buff);
2097 break;
2098 case REPORT_VERSION:
2099 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2100 "REPORT_VERSION", report->id, size-1);
2101 hid_debug_event(hdev, buff);
2102 snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n",
2103 raw_data[2], raw_data[1]);
2104 hid_debug_event(hdev, buff);
2105 break;
2106 case REPORT_BL_ERASE_MEMORY:
2107 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2108 "REPORT_BL_ERASE_MEMORY", report->id, size-1);
2109 hid_debug_event(hdev, buff);
2110 /* TODO */
2111 break;
2112 case REPORT_BL_READ_MEMORY:
2113 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2114 "REPORT_BL_READ_MEMORY", report->id, size-1);
2115 hid_debug_event(hdev, buff);
2116 /* TODO */
2117 break;
2118 case REPORT_BL_WRITE_MEMORY:
2119 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2120 "REPORT_BL_WRITE_MEMORY", report->id, size-1);
2121 hid_debug_event(hdev, buff);
2122 /* TODO */
2123 break;
2124 case REPORT_DEVID:
2125 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2126 "REPORT_DEVID", report->id, size-1);
2127 hid_debug_event(hdev, buff);
2128 snprintf(buff, BUFF_SZ, "\tSerial: 0x%02x%02x%02x%02x\n",
2129 raw_data[1], raw_data[2], raw_data[3], raw_data[4]);
2130 hid_debug_event(hdev, buff);
2131 snprintf(buff, BUFF_SZ, "\tType: 0x%02x\n",
2132 raw_data[5]);
2133 hid_debug_event(hdev, buff);
2134 break;
2135 case REPORT_SPLASH_SIZE:
2136 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2137 "REPORT_SPLASH_SIZE", report->id, size-1);
2138 hid_debug_event(hdev, buff);
2139 snprintf(buff, BUFF_SZ, "\tTotal splash space: %d\n",
2140 (raw_data[2] << 8) | raw_data[1]);
2141 hid_debug_event(hdev, buff);
2142 snprintf(buff, BUFF_SZ, "\tUsed splash space: %d\n",
2143 (raw_data[4] << 8) | raw_data[3]);
2144 hid_debug_event(hdev, buff);
2145 break;
2146 case REPORT_HOOK_VERSION:
2147 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2148 "REPORT_HOOK_VERSION", report->id, size-1);
2149 hid_debug_event(hdev, buff);
2150 snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n",
2151 raw_data[1], raw_data[2]);
2152 hid_debug_event(hdev, buff);
2153 break;
2154 default:
2155 snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
2156 "<unknown>", report->id, size-1);
2157 hid_debug_event(hdev, buff);
2158 break;
2159 }
2160 wake_up_interruptible(&hdev->debug_wait);
2161 kfree(buff);
2162}
2163
2164static void picolcd_init_devfs(struct picolcd_data *data,
2165 struct hid_report *eeprom_r, struct hid_report *eeprom_w,
2166 struct hid_report *flash_r, struct hid_report *flash_w,
2167 struct hid_report *reset)
2168{
2169 struct hid_device *hdev = data->hdev;
2170
2171 mutex_init(&data->mutex_flash);
2172
2173 /* reset */
2174 if (reset)
2175 data->debug_reset = debugfs_create_file("reset", 0600,
2176 hdev->debug_dir, data, &picolcd_debug_reset_fops);
2177
2178 /* eeprom */
2179 if (eeprom_r || eeprom_w)
2180 data->debug_eeprom = debugfs_create_file("eeprom",
2181 (eeprom_w ? S_IWUSR : 0) | (eeprom_r ? S_IRUSR : 0),
2182 hdev->debug_dir, data, &picolcd_debug_eeprom_fops);
2183
2184 /* flash */
2185 if (flash_r && flash_r->maxfield == 1 && flash_r->field[0]->report_size == 8)
2186 data->addr_sz = flash_r->field[0]->report_count - 1;
2187 else
2188 data->addr_sz = -1;
2189 if (data->addr_sz == 2 || data->addr_sz == 3) {
2190 data->debug_flash = debugfs_create_file("flash",
2191 (flash_w ? S_IWUSR : 0) | (flash_r ? S_IRUSR : 0),
2192 hdev->debug_dir, data, &picolcd_debug_flash_fops);
2193 } else if (flash_r || flash_w)
2194 dev_warn(&hdev->dev, "Unexpected FLASH access reports, "
2195 "please submit rdesc for review\n");
2196}
2197
2198static void picolcd_exit_devfs(struct picolcd_data *data)
2199{
2200 struct dentry *dent;
2201
2202 dent = data->debug_reset;
2203 data->debug_reset = NULL;
2204 if (dent)
2205 debugfs_remove(dent);
2206 dent = data->debug_eeprom;
2207 data->debug_eeprom = NULL;
2208 if (dent)
2209 debugfs_remove(dent);
2210 dent = data->debug_flash;
2211 data->debug_flash = NULL;
2212 if (dent)
2213 debugfs_remove(dent);
2214 mutex_destroy(&data->mutex_flash);
2215}
2216#else
2217#define picolcd_debug_raw_event(data, hdev, report, raw_data, size)
2218#define picolcd_init_devfs(data, eeprom_r, eeprom_w, flash_r, flash_w, reset)
2219static void picolcd_exit_devfs(struct picolcd_data *data)
2220{
2221}
2222#endif /* CONFIG_DEBUG_FS */
2223
2224/*
2225 * Handle raw report as sent by device
2226 */
2227static int picolcd_raw_event(struct hid_device *hdev,
2228 struct hid_report *report, u8 *raw_data, int size)
2229{
2230 struct picolcd_data *data = hid_get_drvdata(hdev);
2231 unsigned long flags;
2232 int ret = 0;
2233
2234 if (!data)
2235 return 1;
2236
2237 if (report->id == REPORT_KEY_STATE) {
2238 if (data->input_keys)
2239 ret = picolcd_raw_keypad(data, report, raw_data+1, size-1);
2240 } else if (report->id == REPORT_IR_DATA) {
2241 if (data->input_cir)
2242 ret = picolcd_raw_cir(data, report, raw_data+1, size-1);
2243 } else {
2244 spin_lock_irqsave(&data->lock, flags);
2245 /*
2246 * We let the caller of picolcd_send_and_wait() check if the
2247 * report we got is one of the expected ones or not.
2248 */
2249 if (data->pending) {
2250 memcpy(data->pending->raw_data, raw_data+1, size-1);
2251 data->pending->raw_size = size-1;
2252 data->pending->in_report = report;
2253 complete(&data->pending->ready);
2254 }
2255 spin_unlock_irqrestore(&data->lock, flags);
2256 }
2257
2258 picolcd_debug_raw_event(data, hdev, report, raw_data, size);
2259 return 1;
2260}
2261
2262/* initialize keypad input device */
2263static int picolcd_init_keys(struct picolcd_data *data,
2264 struct hid_report *report)
2265{
2266 struct hid_device *hdev = data->hdev;
2267 struct input_dev *idev;
2268 int error, i;
2269
2270 if (!report)
2271 return -ENODEV;
2272 if (report->maxfield != 1 || report->field[0]->report_count != 2 ||
2273 report->field[0]->report_size != 8) {
2274 dev_err(&hdev->dev, "unsupported KEY_STATE report");
2275 return -EINVAL;
2276 }
2277
2278 idev = input_allocate_device();
2279 if (idev == NULL) {
2280 dev_err(&hdev->dev, "failed to allocate input device");
2281 return -ENOMEM;
2282 }
2283 input_set_drvdata(idev, hdev);
2284 memcpy(data->keycode, def_keymap, sizeof(def_keymap));
2285 idev->name = hdev->name;
2286 idev->phys = hdev->phys;
2287 idev->uniq = hdev->uniq;
2288 idev->id.bustype = hdev->bus;
2289 idev->id.vendor = hdev->vendor;
2290 idev->id.product = hdev->product;
2291 idev->id.version = hdev->version;
2292 idev->dev.parent = hdev->dev.parent;
2293 idev->keycode = &data->keycode;
2294 idev->keycodemax = PICOLCD_KEYS;
2295 idev->keycodesize = sizeof(data->keycode[0]);
2296 input_set_capability(idev, EV_MSC, MSC_SCAN);
2297 set_bit(EV_REP, idev->evbit);
2298 for (i = 0; i < PICOLCD_KEYS; i++)
2299 input_set_capability(idev, EV_KEY, data->keycode[i]);
2300 error = input_register_device(idev);
2301 if (error) {
2302 dev_err(&hdev->dev, "error registering the input device");
2303 input_free_device(idev);
2304 return error;
2305 }
2306 data->input_keys = idev;
2307 return 0;
2308}
2309
2310static void picolcd_exit_keys(struct picolcd_data *data)
2311{
2312 struct input_dev *idev = data->input_keys;
2313
2314 data->input_keys = NULL;
2315 if (idev)
2316 input_unregister_device(idev);
2317}
2318
2319/* initialize CIR input device */
2320static inline int picolcd_init_cir(struct picolcd_data *data, struct hid_report *report)
2321{
2322 /* support not implemented yet */
2323 return 0;
2324}
2325
2326static inline void picolcd_exit_cir(struct picolcd_data *data)
2327{
2328}
2329
2330static int picolcd_probe_lcd(struct hid_device *hdev, struct picolcd_data *data)
2331{
2332 int error;
2333
2334 error = picolcd_check_version(hdev);
2335 if (error)
2336 return error;
2337
2338 if (data->version[0] != 0 && data->version[1] != 3)
2339 dev_info(&hdev->dev, "Device with untested firmware revision, "
2340 "please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n",
2341 dev_name(&hdev->dev));
2342
2343 /* Setup keypad input device */
2344 error = picolcd_init_keys(data, picolcd_in_report(REPORT_KEY_STATE, hdev));
2345 if (error)
2346 goto err;
2347
2348 /* Setup CIR input device */
2349 error = picolcd_init_cir(data, picolcd_in_report(REPORT_IR_DATA, hdev));
2350 if (error)
2351 goto err;
2352
2353 /* Set up the framebuffer device */
2354 error = picolcd_init_framebuffer(data);
2355 if (error)
2356 goto err;
2357
2358 /* Setup lcd class device */
2359 error = picolcd_init_lcd(data, picolcd_out_report(REPORT_CONTRAST, hdev));
2360 if (error)
2361 goto err;
2362
2363 /* Setup backlight class device */
2364 error = picolcd_init_backlight(data, picolcd_out_report(REPORT_BRIGHTNESS, hdev));
2365 if (error)
2366 goto err;
2367
2368 /* Setup the LED class devices */
2369 error = picolcd_init_leds(data, picolcd_out_report(REPORT_LED_STATE, hdev));
2370 if (error)
2371 goto err;
2372
2373 picolcd_init_devfs(data, picolcd_out_report(REPORT_EE_READ, hdev),
2374 picolcd_out_report(REPORT_EE_WRITE, hdev),
2375 picolcd_out_report(REPORT_READ_MEMORY, hdev),
2376 picolcd_out_report(REPORT_WRITE_MEMORY, hdev),
2377 picolcd_out_report(REPORT_RESET, hdev));
2378 return 0;
2379err:
2380 picolcd_exit_leds(data);
2381 picolcd_exit_backlight(data);
2382 picolcd_exit_lcd(data);
2383 picolcd_exit_framebuffer(data);
2384 picolcd_exit_cir(data);
2385 picolcd_exit_keys(data);
2386 return error;
2387}
2388
2389static int picolcd_probe_bootloader(struct hid_device *hdev, struct picolcd_data *data)
2390{
2391 int error;
2392
2393 error = picolcd_check_version(hdev);
2394 if (error)
2395 return error;
2396
2397 if (data->version[0] != 1 && data->version[1] != 0)
2398 dev_info(&hdev->dev, "Device with untested bootloader revision, "
2399 "please submit /sys/kernel/debug/hid/%s/rdesc for this device.\n",
2400 dev_name(&hdev->dev));
2401
2402 picolcd_init_devfs(data, NULL, NULL,
2403 picolcd_out_report(REPORT_BL_READ_MEMORY, hdev),
2404 picolcd_out_report(REPORT_BL_WRITE_MEMORY, hdev), NULL);
2405 return 0;
2406}
2407
2408static int picolcd_probe(struct hid_device *hdev,
2409 const struct hid_device_id *id)
2410{
2411 struct picolcd_data *data;
2412 int error = -ENOMEM;
2413
2414 dbg_hid(PICOLCD_NAME " hardware probe...\n");
2415
2416 /*
2417 * Let's allocate the picolcd data structure, set some reasonable
2418 * defaults, and associate it with the device
2419 */
2420 data = kzalloc(sizeof(struct picolcd_data), GFP_KERNEL);
2421 if (data == NULL) {
2422 dev_err(&hdev->dev, "can't allocate space for Minibox PicoLCD device data\n");
2423 error = -ENOMEM;
2424 goto err_no_cleanup;
2425 }
2426
2427 spin_lock_init(&data->lock);
2428 mutex_init(&data->mutex);
2429 data->hdev = hdev;
2430 data->opmode_delay = 5000;
2431 if (hdev->product == USB_DEVICE_ID_PICOLCD_BOOTLOADER)
2432 data->status |= PICOLCD_BOOTLOADER;
2433 hid_set_drvdata(hdev, data);
2434
2435 /* Parse the device reports and start it up */
2436 error = hid_parse(hdev);
2437 if (error) {
2438 dev_err(&hdev->dev, "device report parse failed\n");
2439 goto err_cleanup_data;
2440 }
2441
2442 /* We don't use hidinput but hid_hw_start() fails if nothing is
2443 * claimed. So spoof claimed input. */
2444 hdev->claimed = HID_CLAIMED_INPUT;
2445 error = hid_hw_start(hdev, 0);
2446 hdev->claimed = 0;
2447 if (error) {
2448 dev_err(&hdev->dev, "hardware start failed\n");
2449 goto err_cleanup_data;
2450 }
2451
2452 error = hdev->ll_driver->open(hdev);
2453 if (error) {
2454 dev_err(&hdev->dev, "failed to open input interrupt pipe for key and IR events\n");
2455 goto err_cleanup_hid_hw;
2456 }
2457
2458 error = device_create_file(&hdev->dev, &dev_attr_operation_mode_delay);
2459 if (error) {
2460 dev_err(&hdev->dev, "failed to create sysfs attributes\n");
2461 goto err_cleanup_hid_ll;
2462 }
2463
2464 error = device_create_file(&hdev->dev, &dev_attr_operation_mode);
2465 if (error) {
2466 dev_err(&hdev->dev, "failed to create sysfs attributes\n");
2467 goto err_cleanup_sysfs1;
2468 }
2469
2470 if (data->status & PICOLCD_BOOTLOADER)
2471 error = picolcd_probe_bootloader(hdev, data);
2472 else
2473 error = picolcd_probe_lcd(hdev, data);
2474 if (error)
2475 goto err_cleanup_sysfs2;
2476
2477 dbg_hid(PICOLCD_NAME " activated and initialized\n");
2478 return 0;
2479
2480err_cleanup_sysfs2:
2481 device_remove_file(&hdev->dev, &dev_attr_operation_mode);
2482err_cleanup_sysfs1:
2483 device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay);
2484err_cleanup_hid_ll:
2485 hdev->ll_driver->close(hdev);
2486err_cleanup_hid_hw:
2487 hid_hw_stop(hdev);
2488err_cleanup_data:
2489 kfree(data);
2490err_no_cleanup:
2491 hid_set_drvdata(hdev, NULL);
2492
2493 return error;
2494}
2495
2496static void picolcd_remove(struct hid_device *hdev)
2497{
2498 struct picolcd_data *data = hid_get_drvdata(hdev);
2499 unsigned long flags;
2500
2501 dbg_hid(PICOLCD_NAME " hardware remove...\n");
2502 spin_lock_irqsave(&data->lock, flags);
2503 data->status |= PICOLCD_FAILED;
2504 spin_unlock_irqrestore(&data->lock, flags);
2505
2506 picolcd_exit_devfs(data);
2507 device_remove_file(&hdev->dev, &dev_attr_operation_mode);
2508 device_remove_file(&hdev->dev, &dev_attr_operation_mode_delay);
2509 hdev->ll_driver->close(hdev);
2510 hid_hw_stop(hdev);
2511 hid_set_drvdata(hdev, NULL);
2512
2513 /* Shortcut potential pending reply that will never arrive */
2514 spin_lock_irqsave(&data->lock, flags);
2515 if (data->pending)
2516 complete(&data->pending->ready);
2517 spin_unlock_irqrestore(&data->lock, flags);
2518
2519 /* Cleanup LED */
2520 picolcd_exit_leds(data);
2521 /* Clean up the framebuffer */
2522 picolcd_exit_backlight(data);
2523 picolcd_exit_lcd(data);
2524 picolcd_exit_framebuffer(data);
2525 /* Cleanup input */
2526 picolcd_exit_cir(data);
2527 picolcd_exit_keys(data);
2528
2529 mutex_destroy(&data->mutex);
2530 /* Finally, clean up the picolcd data itself */
2531 kfree(data);
2532}
2533
2534static const struct hid_device_id picolcd_devices[] = {
2535 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
2536 { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
2537 { }
2538};
2539MODULE_DEVICE_TABLE(hid, picolcd_devices);
2540
2541static struct hid_driver picolcd_driver = {
2542 .name = "hid-picolcd",
2543 .id_table = picolcd_devices,
2544 .probe = picolcd_probe,
2545 .remove = picolcd_remove,
2546 .raw_event = picolcd_raw_event,
2547};
2548
2549static int __init picolcd_init(void)
2550{
2551 return hid_register_driver(&picolcd_driver);
2552}
2553
2554static void __exit picolcd_exit(void)
2555{
2556 hid_unregister_driver(&picolcd_driver);
2557}
2558
2559module_init(picolcd_init);
2560module_exit(picolcd_exit);
2561MODULE_DESCRIPTION("Minibox graphics PicoLCD Driver");
2562MODULE_LICENSE("GPL v2");
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 14a67fba590e..17eb3ec3fbb8 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -623,6 +623,7 @@ int usbhid_wait_io(struct hid_device *hid)
623 623
624 return 0; 624 return 0;
625} 625}
626EXPORT_SYMBOL_GPL(usbhid_wait_io);
626 627
627static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle) 628static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
628{ 629{
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 22:16:42 -0500