add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/gpio/gpio-mt7621.c
..
..
@@ -227,8 +227,8 @@
227
227
 	ctrl = mtk->base + GPIO_REG_DCLR + (rg->bank * GPIO_BANK_STRIDE);
228
228
 	diro = mtk->base + GPIO_REG_CTRL + (rg->bank * GPIO_BANK_STRIDE);
229
229
 
230
-	ret = bgpio_init(&rg->chip, dev, 4,
231
-			 dat, set, ctrl, diro, NULL, 0);
230
+	ret = bgpio_init(&rg->chip, dev, 4, dat, set, ctrl, diro, NULL,
231
+			 BGPIOF_NO_SET_ON_INPUT);
232
232
 	if (ret) {
233
233
 		dev_err(dev, "bgpio_init() failed\n");
234
234
 		return ret;
..
..
@@ -241,13 +241,6 @@
241
241
 	if (!rg->chip.label)
242
242
 		return -ENOMEM;
243
243
 
244
-	ret = devm_gpiochip_add_data(dev, &rg->chip, mtk);
245
-	if (ret < 0) {
246
-		dev_err(dev, "Could not register gpio %d, ret=%d\n",
247
-			rg->chip.ngpio, ret);
248
-		return ret;
249
-	}
250
-
251
244
 	rg->irq_chip.name = dev_name(dev);
252
245
 	rg->irq_chip.parent_device = dev;
253
246
 	rg->irq_chip.irq_unmask = mediatek_gpio_irq_unmask;
..
..
@@ -256,10 +249,11 @@
256
249
 	rg->irq_chip.irq_set_type = mediatek_gpio_irq_type;
257
250
 
258
251
 	if (mtk->gpio_irq) {
252
+		struct gpio_irq_chip *girq;
253
+
259
254
 		/*
260
-		 * Manually request the irq here instead of passing
261
-		 * a flow-handler to gpiochip_set_chained_irqchip,
262
-		 * because the irq is shared.
255
+		 * Directly request the irq here instead of passing
256
+		 * a flow-handler because the irq is shared.
263
257
 		 */
264
258
 		ret = devm_request_irq(dev, mtk->gpio_irq,
265
259
 				       mediatek_gpio_irq_handler, IRQF_SHARED,
..
..
@@ -271,15 +265,21 @@
271
265
 			return ret;
272
266
 		}
273
267
 
274
-		ret = gpiochip_irqchip_add(&rg->chip, &rg->irq_chip,
275
-					   0, handle_simple_irq, IRQ_TYPE_NONE);
276
-		if (ret) {
277
-			dev_err(dev, "failed to add gpiochip_irqchip\n");
278
-			return ret;
279
-		}
268
+		girq = &rg->chip.irq;
269
+		girq->chip = &rg->irq_chip;
270
+		/* This will let us handle the parent IRQ in the driver */
271
+		girq->parent_handler = NULL;
272
+		girq->num_parents = 0;
273
+		girq->parents = NULL;
274
+		girq->default_type = IRQ_TYPE_NONE;
275
+		girq->handler = handle_simple_irq;
276
+	}
280
277
 
281
-		gpiochip_set_chained_irqchip(&rg->chip, &rg->irq_chip,
282
-					     mtk->gpio_irq, NULL);
278
+	ret = devm_gpiochip_add_data(dev, &rg->chip, mtk);
279
+	if (ret < 0) {
280
+		dev_err(dev, "Could not register gpio %d, ret=%d\n",
281
+			rg->chip.ngpio, ret);
282
+		return ret;
283
283
 	}
284
284
 
285
285
 	/* set polarity to low for all gpios */
..
..
@@ -293,7 +293,6 @@
293
293
 static int
294
294
 mediatek_gpio_probe(struct platform_device *pdev)
295
295
 {
296
-	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
297
296
 	struct device *dev = &pdev->dev;
298
297
 	struct device_node *np = dev->of_node;
299
298
 	struct mtk *mtk;
..
..
@@ -304,7 +303,7 @@
304
303
 	if (!mtk)
305
304
 		return -ENOMEM;
306
305
 
307
-	mtk->base = devm_ioremap_resource(dev, res);
306
+	mtk->base = devm_platform_ioremap_resource(pdev, 0);
308
307
 	if (IS_ERR(mtk->base))
309
308
 		return PTR_ERR(mtk->base);
310
309