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Message-ID: <202512171631.uKXlYwqu-lkp@intel.com>
Date: Wed, 17 Dec 2025 16:39:40 +0800
From: kernel test robot <lkp@...el.com>
To: Junjie Cao <caojunjie650@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Lee Jones <lee@...nel.org>, Pengyu Luo <mitltlatltl@...il.com>,
"Daniel Thompson (RISCstar)" <danielt@...nel.org>
Subject: drivers/video/backlight/aw99706.c:281:9: error: implicit declaration
of function 'gpiod_set_value_cansleep'; did you mean
'gpio_set_value_cansleep'?
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ea1013c1539270e372fc99854bc6e4d94eaeff66
commit: 147b38a5ad068c43d601addc668937af6b4fe533 backlight: aw99706: Add support for Awinic AW99706 backlight
date: 3 weeks ago
config: sh-randconfig-r061-20251216 (https://download.01.org/0day-ci/archive/20251217/202512171631.uKXlYwqu-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251217/202512171631.uKXlYwqu-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512171631.uKXlYwqu-lkp@intel.com/
All errors (new ones prefixed by >>):
drivers/video/backlight/aw99706.c: In function 'aw99706_hw_init':
>> drivers/video/backlight/aw99706.c:281:9: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Wimplicit-function-declaration]
281 | gpiod_set_value_cansleep(aw->hwen_gpio, 1);
| ^~~~~~~~~~~~~~~~~~~~~~~~
| gpio_set_value_cansleep
drivers/video/backlight/aw99706.c: In function 'aw99706_probe':
>> drivers/video/backlight/aw99706.c:394:25: error: implicit declaration of function 'devm_gpiod_get'; did you mean 'em_pd_get'? [-Wimplicit-function-declaration]
394 | aw->hwen_gpio = devm_gpiod_get(aw->dev, "enable", GPIOD_OUT_LOW);
| ^~~~~~~~~~~~~~
| em_pd_get
>> drivers/video/backlight/aw99706.c:394:59: error: 'GPIOD_OUT_LOW' undeclared (first use in this function); did you mean 'GPIOF_OUT_INIT_LOW'?
394 | aw->hwen_gpio = devm_gpiod_get(aw->dev, "enable", GPIOD_OUT_LOW);
| ^~~~~~~~~~~~~
| GPIOF_OUT_INIT_LOW
drivers/video/backlight/aw99706.c:394:59: note: each undeclared identifier is reported only once for each function it appears in
drivers/video/backlight/aw99706.c: At top level:
drivers/video/backlight/aw99706.c:436:12: warning: 'aw99706_resume' defined but not used [-Wunused-function]
436 | static int aw99706_resume(struct device *dev)
| ^~~~~~~~~~~~~~
drivers/video/backlight/aw99706.c:429:12: warning: 'aw99706_suspend' defined but not used [-Wunused-function]
429 | static int aw99706_suspend(struct device *dev)
| ^~~~~~~~~~~~~~~
vim +281 drivers/video/backlight/aw99706.c
276
277 static int aw99706_hw_init(struct aw99706_device *aw)
278 {
279 int ret, i;
280
> 281 gpiod_set_value_cansleep(aw->hwen_gpio, 1);
282
283 for (i = 0; i < ARRAY_SIZE(aw->init_tbl); i++) {
284 ret = aw99706_i2c_update_bits(aw, aw->init_tbl[i].reg,
285 aw->init_tbl[i].mask,
286 aw->init_tbl[i].val);
287 if (ret < 0) {
288 dev_err(aw->dev, "Failed to write init data %d\n", ret);
289 return ret;
290 }
291 }
292
293 return 0;
294 }
295
296 static int aw99706_bl_enable(struct aw99706_device *aw, bool en)
297 {
298 int ret;
299 u8 val;
300
301 val = FIELD_PREP(AW99706_BACKLIGHT_EN_MASK, en);
302 ret = aw99706_i2c_update_bits(aw, AW99706_CFGD_REG,
303 AW99706_BACKLIGHT_EN_MASK, val);
304 if (ret)
305 dev_err(aw->dev, "Failed to enable backlight!\n");
306
307 return ret;
308 }
309
310 static int aw99706_update_brightness(struct aw99706_device *aw, u32 brt_lvl)
311 {
312 bool bl_enable_now = !!brt_lvl;
313 int ret;
314
315 ret = aw99706_i2c_write(aw, AW99706_CFG4_REG,
316 (brt_lvl >> 8) & AW99706_BRT_MSB_MASK);
317 if (ret < 0)
318 return ret;
319
320 ret = aw99706_i2c_write(aw, AW99706_CFG5_REG,
321 brt_lvl & AW99706_BRT_LSB_MASK);
322 if (ret < 0)
323 return ret;
324
325 if (aw->bl_enable != bl_enable_now) {
326 ret = aw99706_bl_enable(aw, bl_enable_now);
327 if (!ret)
328 aw->bl_enable = bl_enable_now;
329 }
330
331 return ret;
332 }
333
334 static int aw99706_bl_update_status(struct backlight_device *bl)
335 {
336 struct aw99706_device *aw = bl_get_data(bl);
337
338 return aw99706_update_brightness(aw, bl->props.brightness);
339 }
340
341 static const struct backlight_ops aw99706_bl_ops = {
342 .options = BL_CORE_SUSPENDRESUME,
343 .update_status = aw99706_bl_update_status,
344 };
345
346 static const struct regmap_config aw99706_regmap_config = {
347 .reg_bits = 8,
348 .val_bits = 8,
349 .max_register = AW99706_REG_MAX,
350 .writeable_reg = aw99706_writeable_reg,
351 .readable_reg = aw99706_readable_reg,
352 };
353
354 static int aw99706_chip_id_read(struct aw99706_device *aw)
355 {
356 int ret;
357 unsigned int val;
358
359 ret = aw99706_i2c_read(aw, AW99706_CHIPID_REG, &val);
360 if (ret < 0)
361 return ret;
362
363 return val;
364 }
365
366 static int aw99706_probe(struct i2c_client *client)
367 {
368 struct device *dev = &client->dev;
369 struct aw99706_device *aw;
370 struct backlight_device *bl_dev;
371 struct backlight_properties props = {};
372 int ret = 0;
373
374 aw = devm_kzalloc(dev, sizeof(*aw), GFP_KERNEL);
375 if (!aw)
376 return -ENOMEM;
377
378 aw->client = client;
379 aw->dev = dev;
380 i2c_set_clientdata(client, aw);
381
382 aw->regmap = devm_regmap_init_i2c(client, &aw99706_regmap_config);
383 if (IS_ERR(aw->regmap))
384 return dev_err_probe(dev, PTR_ERR(aw->regmap),
385 "Failed to init regmap\n");
386
387 ret = aw99706_chip_id_read(aw);
388 if (ret != AW99706_ID)
389 return dev_err_probe(dev, -ENODEV,
390 "Unknown chip id 0x%02x\n", ret);
391
392 aw99706_dt_parse(aw, &props);
393
> 394 aw->hwen_gpio = devm_gpiod_get(aw->dev, "enable", GPIOD_OUT_LOW);
395 if (IS_ERR(aw->hwen_gpio))
396 return dev_err_probe(dev, PTR_ERR(aw->hwen_gpio),
397 "Failed to get enable gpio\n");
398
399 ret = aw99706_hw_init(aw);
400 if (ret < 0)
401 return dev_err_probe(dev, ret,
402 "Failed to initialize the chip\n");
403
404 props.type = BACKLIGHT_RAW;
405 props.scale = BACKLIGHT_SCALE_LINEAR;
406
407 bl_dev = devm_backlight_device_register(dev, "aw99706-backlight", dev,
408 aw, &aw99706_bl_ops, &props);
409 if (IS_ERR(bl_dev))
410 return dev_err_probe(dev, PTR_ERR(bl_dev),
411 "Failed to register backlight!\n");
412
413 aw->bl_dev = bl_dev;
414
415 return 0;
416 }
417
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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