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Message-ID: <12a92b74-836d-f903-a231-3af8efc3c951@samsung.com>
Date: Fri, 6 Apr 2018 15:55:32 +0200
From: Andrzej Hajda <a.hajda@...sung.com>
To: Chanwoo Choi <cw00.choi@...sung.com>,
kbuild test robot <lkp@...el.com>,
Maciej Purski <m.purski@...sung.com>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: Re: drivers/gpu/drm/bridge/sil-sii8620.c:2405: undefined reference
to `extcon_unregister_notifier'
On 06.04.2018 12:34, Chanwoo Choi wrote:
> Hi Andrzej,
>
> On 2018년 04월 06일 19:14, Andrzej Hajda wrote:
>> Hi Chanwoo,
>>
>> It looks like something went wrong, sii8620 patch was merged without
>> extcon dependencies.
>> Could you look at it?
> If add the 'select EXTCON' to sii8620's Kconfig, it will be solved.
> Is there other solution?
I wonder if 'imply EXTCON' wouldn't be better, I will prepare patch for it.
Regards
Andrzej
>
>> Regards
>> Andrzej
>>
>> On 06.04.2018 11:52, kbuild test robot wrote:
>>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>>> head: 38c23685b273cfb4ccf31a199feccce3bdcb5d83
>>> commit: 688838442147d9dd94c2ef7c2c31a35cf150c5fa drm/bridge/sii8620: use micro-USB cable detection logic to detect MHL
>>> date: 4 weeks ago
>>> config: i386-randconfig-x0-04061534 (attached as .config)
>>> compiler: gcc-5 (Debian 5.5.0-3) 5.4.1 20171010
>>> reproduce:
>>> git checkout 688838442147d9dd94c2ef7c2c31a35cf150c5fa
>>> # save the attached .config to linux build tree
>>> make ARCH=i386
>>>
>>> All errors (new ones prefixed by >>):
>>>
>>> drivers/gpu/drm/bridge/sil-sii8620.o: In function `sii8620_remove':
>>>>> drivers/gpu/drm/bridge/sil-sii8620.c:2405: undefined reference to `extcon_unregister_notifier'
>>> drivers/gpu/drm/bridge/sil-sii8620.o: In function `sii8620_extcon_init':
>>>>> drivers/gpu/drm/bridge/sil-sii8620.c:2229: undefined reference to `extcon_find_edev_by_node'
>>>>> drivers/gpu/drm/bridge/sil-sii8620.c:2241: undefined reference to `extcon_register_notifier'
>>> drivers/gpu/drm/bridge/sil-sii8620.o: In function `sii8620_extcon_work':
>>>>> drivers/gpu/drm/bridge/sil-sii8620.c:2189: undefined reference to `extcon_get_state'
>>> vim +2405 drivers/gpu/drm/bridge/sil-sii8620.c
>>>
>>> 2212
>>> 2213 static int sii8620_extcon_init(struct sii8620 *ctx)
>>> 2214 {
>>> 2215 struct extcon_dev *edev;
>>> 2216 struct device_node *musb, *muic;
>>> 2217 int ret;
>>> 2218
>>> 2219 /* get micro-USB connector node */
>>> 2220 musb = of_graph_get_remote_node(ctx->dev->of_node, 1, -1);
>>> 2221 /* next get micro-USB Interface Controller node */
>>> 2222 muic = of_get_next_parent(musb);
>>> 2223
>>> 2224 if (!muic) {
>>> 2225 dev_info(ctx->dev, "no extcon found, switching to 'always on' mode\n");
>>> 2226 return 0;
>>> 2227 }
>>> 2228
>>>> 2229 edev = extcon_find_edev_by_node(muic);
>>> 2230 of_node_put(muic);
>>> 2231 if (IS_ERR(edev)) {
>>> 2232 if (PTR_ERR(edev) == -EPROBE_DEFER)
>>> 2233 return -EPROBE_DEFER;
>>> 2234 dev_err(ctx->dev, "Invalid or missing extcon\n");
>>> 2235 return PTR_ERR(edev);
>>> 2236 }
>>> 2237
>>> 2238 ctx->extcon = edev;
>>> 2239 ctx->extcon_nb.notifier_call = sii8620_extcon_notifier;
>>> 2240 INIT_WORK(&ctx->extcon_wq, sii8620_extcon_work);
>>>> 2241 ret = extcon_register_notifier(edev, EXTCON_DISP_MHL, &ctx->extcon_nb);
>>> 2242 if (ret) {
>>> 2243 dev_err(ctx->dev, "failed to register notifier for MHL\n");
>>> 2244 return ret;
>>> 2245 }
>>> 2246
>>> 2247 return 0;
>>> 2248 }
>>> 2249
>>> 2250 static inline struct sii8620 *bridge_to_sii8620(struct drm_bridge *bridge)
>>> 2251 {
>>> 2252 return container_of(bridge, struct sii8620, bridge);
>>> 2253 }
>>> 2254
>>> 2255 static int sii8620_attach(struct drm_bridge *bridge)
>>> 2256 {
>>> 2257 struct sii8620 *ctx = bridge_to_sii8620(bridge);
>>> 2258
>>> 2259 sii8620_init_rcp_input_dev(ctx);
>>> 2260
>>> 2261 return sii8620_clear_error(ctx);
>>> 2262 }
>>> 2263
>>> 2264 static void sii8620_detach(struct drm_bridge *bridge)
>>> 2265 {
>>> 2266 struct sii8620 *ctx = bridge_to_sii8620(bridge);
>>> 2267
>>> 2268 rc_unregister_device(ctx->rc_dev);
>>> 2269 }
>>> 2270
>>> 2271 static enum drm_mode_status sii8620_mode_valid(struct drm_bridge *bridge,
>>> 2272 const struct drm_display_mode *mode)
>>> 2273 {
>>> 2274 struct sii8620 *ctx = bridge_to_sii8620(bridge);
>>> 2275 bool can_pack = ctx->devcap[MHL_DCAP_VID_LINK_MODE] &
>>> 2276 MHL_DCAP_VID_LINK_PPIXEL;
>>> 2277 unsigned int max_pclk = sii8620_is_mhl3(ctx) ? MHL3_MAX_LCLK :
>>> 2278 MHL1_MAX_LCLK;
>>> 2279 max_pclk /= can_pack ? 2 : 3;
>>> 2280
>>> 2281 return (mode->clock > max_pclk) ? MODE_CLOCK_HIGH : MODE_OK;
>>> 2282 }
>>> 2283
>>> 2284 static bool sii8620_mode_fixup(struct drm_bridge *bridge,
>>> 2285 const struct drm_display_mode *mode,
>>> 2286 struct drm_display_mode *adjusted_mode)
>>> 2287 {
>>> 2288 struct sii8620 *ctx = bridge_to_sii8620(bridge);
>>> 2289 int max_lclk;
>>> 2290 bool ret = true;
>>> 2291
>>> 2292 mutex_lock(&ctx->lock);
>>> 2293
>>> 2294 max_lclk = sii8620_is_mhl3(ctx) ? MHL3_MAX_LCLK : MHL1_MAX_LCLK;
>>> 2295 if (max_lclk > 3 * adjusted_mode->clock) {
>>> 2296 ctx->use_packed_pixel = 0;
>>> 2297 goto end;
>>> 2298 }
>>> 2299 if ((ctx->devcap[MHL_DCAP_VID_LINK_MODE] & MHL_DCAP_VID_LINK_PPIXEL) &&
>>> 2300 max_lclk > 2 * adjusted_mode->clock) {
>>> 2301 ctx->use_packed_pixel = 1;
>>> 2302 goto end;
>>> 2303 }
>>> 2304 ret = false;
>>> 2305 end:
>>> 2306 if (ret) {
>>> 2307 u8 vic = drm_match_cea_mode(adjusted_mode);
>>> 2308
>>> 2309 if (!vic) {
>>> 2310 union hdmi_infoframe frm;
>>> 2311 u8 mhl_vic[] = { 0, 95, 94, 93, 98 };
>>> 2312
>>> 2313 /* FIXME: We need the connector here */
>>> 2314 drm_hdmi_vendor_infoframe_from_display_mode(
>>> 2315 &frm.vendor.hdmi, NULL, adjusted_mode);
>>> 2316 vic = frm.vendor.hdmi.vic;
>>> 2317 if (vic >= ARRAY_SIZE(mhl_vic))
>>> 2318 vic = 0;
>>> 2319 vic = mhl_vic[vic];
>>> 2320 }
>>> 2321 ctx->video_code = vic;
>>> 2322 ctx->pixel_clock = adjusted_mode->clock;
>>> 2323 }
>>> 2324 mutex_unlock(&ctx->lock);
>>> 2325 return ret;
>>> 2326 }
>>> 2327
>>> 2328 static const struct drm_bridge_funcs sii8620_bridge_funcs = {
>>> 2329 .attach = sii8620_attach,
>>> 2330 .detach = sii8620_detach,
>>> 2331 .mode_fixup = sii8620_mode_fixup,
>>> 2332 .mode_valid = sii8620_mode_valid,
>>> 2333 };
>>> 2334
>>> 2335 static int sii8620_probe(struct i2c_client *client,
>>> 2336 const struct i2c_device_id *id)
>>> 2337 {
>>> 2338 struct device *dev = &client->dev;
>>> 2339 struct sii8620 *ctx;
>>> 2340 int ret;
>>> 2341
>>> 2342 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
>>> 2343 if (!ctx)
>>> 2344 return -ENOMEM;
>>> 2345
>>> 2346 ctx->dev = dev;
>>> 2347 mutex_init(&ctx->lock);
>>> 2348 INIT_LIST_HEAD(&ctx->mt_queue);
>>> 2349
>>> 2350 ctx->clk_xtal = devm_clk_get(dev, "xtal");
>>> 2351 if (IS_ERR(ctx->clk_xtal)) {
>>> 2352 dev_err(dev, "failed to get xtal clock from DT\n");
>>> 2353 return PTR_ERR(ctx->clk_xtal);
>>> 2354 }
>>> 2355
>>> 2356 if (!client->irq) {
>>> 2357 dev_err(dev, "no irq provided\n");
>>> 2358 return -EINVAL;
>>> 2359 }
>>> 2360 irq_set_status_flags(client->irq, IRQ_NOAUTOEN);
>>> 2361 ret = devm_request_threaded_irq(dev, client->irq, NULL,
>>> 2362 sii8620_irq_thread,
>>> 2363 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
>>> 2364 "sii8620", ctx);
>>> 2365 if (ret < 0) {
>>> 2366 dev_err(dev, "failed to install IRQ handler\n");
>>> 2367 return ret;
>>> 2368 }
>>> 2369
>>> 2370 ctx->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
>>> 2371 if (IS_ERR(ctx->gpio_reset)) {
>>> 2372 dev_err(dev, "failed to get reset gpio from DT\n");
>>> 2373 return PTR_ERR(ctx->gpio_reset);
>>> 2374 }
>>> 2375
>>> 2376 ctx->supplies[0].supply = "cvcc10";
>>> 2377 ctx->supplies[1].supply = "iovcc18";
>>> 2378 ret = devm_regulator_bulk_get(dev, 2, ctx->supplies);
>>> 2379 if (ret)
>>> 2380 return ret;
>>> 2381
>>> 2382 ret = sii8620_extcon_init(ctx);
>>> 2383 if (ret < 0) {
>>> 2384 dev_err(ctx->dev, "failed to initialize EXTCON\n");
>>> 2385 return ret;
>>> 2386 }
>>> 2387
>>> 2388 i2c_set_clientdata(client, ctx);
>>> 2389
>>> 2390 ctx->bridge.funcs = &sii8620_bridge_funcs;
>>> 2391 ctx->bridge.of_node = dev->of_node;
>>> 2392 drm_bridge_add(&ctx->bridge);
>>> 2393
>>> 2394 if (!ctx->extcon)
>>> 2395 sii8620_cable_in(ctx);
>>> 2396
>>> 2397 return 0;
>>> 2398 }
>>> 2399
>>> 2400 static int sii8620_remove(struct i2c_client *client)
>>> 2401 {
>>> 2402 struct sii8620 *ctx = i2c_get_clientdata(client);
>>> 2403
>>> 2404 if (ctx->extcon) {
>>>> 2405 extcon_unregister_notifier(ctx->extcon, EXTCON_DISP_MHL,
>>> 2406 &ctx->extcon_nb);
>>> 2407 flush_work(&ctx->extcon_wq);
>>> 2408 if (ctx->cable_state > 0)
>>> 2409 sii8620_cable_out(ctx);
>>> 2410 } else {
>>> 2411 sii8620_cable_out(ctx);
>>> 2412 }
>>> 2413 drm_bridge_remove(&ctx->bridge);
>>> 2414
>>> 2415 return 0;
>>> 2416 }
>>> 2417
>>>
>>> ---
>>> 0-DAY kernel test infrastructure Open Source Technology Center
>>> https://lists.01.org/pipermail/kbuild-all Intel Corporation
>>
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