Re: drivers/gpu/drm/bridge/sil-sii8620.c:2405: undefined reference to `extcon_unregister_notifier'
From: Chanwoo Choi
Date: Fri Apr 06 2018 - 06:34:56 EST
Hi Andrzej,
On 2018ë 04ì 06ì 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?
>
> 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
>
>
>
>
--
Best Regards,
Chanwoo Choi
Samsung Electronics