add lvds1024*800

hc

2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920

 kernel/drivers/i2c/busses/i2c-powermac.c
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..
@@ -1,18 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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     i2c Support for Apple SMU Controller
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     Copyright (c) 2005 Benjamin Herrenschmidt, IBM Corp.
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                        <benh@kernel.crashing.org>
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-    This program is free software; you can redistribute it and/or modify
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-    it under the terms of the GNU General Public License as published by
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-    the Free Software Foundation; either version 2 of the License, or
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-    (at your option) any later version.
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-
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-    This program is distributed in the hope that it will be useful,
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-    but WITHOUT ANY WARRANTY; without even the implied warranty of
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-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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-    GNU General Public License for more details.
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8
 
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 */
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10
 
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@@ -215,23 +207,23 @@
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 					   struct pmac_i2c_bus *bus,
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 					   struct device_node *node)
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 {
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-	const __be32 *prop;
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-	int len;
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+	u32 prop;
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+	int ret;
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 	/* First check for valid "reg" */
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-	prop = of_get_property(node, "reg", &len);
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-	if (prop && (len >= sizeof(int)))
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-		return (be32_to_cpup(prop) & 0xff) >> 1;
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+	ret = of_property_read_u32(node, "reg", &prop);
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+	if (ret == 0)
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+		return (prop & 0xff) >> 1;
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 	/* Then check old-style "i2c-address" */
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-	prop = of_get_property(node, "i2c-address", &len);
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-	if (prop && (len >= sizeof(int)))
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-		return (be32_to_cpup(prop) & 0xff) >> 1;
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+	ret = of_property_read_u32(node, "i2c-address", &prop);
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+	if (ret == 0)
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+		return (prop & 0xff) >> 1;
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222
 
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 	/* Now handle some devices with missing "reg" properties */
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-	if (!strcmp(node->name, "cereal"))
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+	if (of_node_name_eq(node, "cereal"))
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 		return 0x60;
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-	else if (!strcmp(node->name, "deq"))
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+	else if (of_node_name_eq(node, "deq"))
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 		return 0x34;
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228
 
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 	dev_warn(&adap->dev, "No i2c address for %pOF\n", node);
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@@ -248,8 +240,8 @@
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 	strncpy(info.type, type, sizeof(info.type));
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 	info.addr = addr;
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-	newdev = i2c_new_device(adap, &info);
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-	if (!newdev)
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+	newdev = i2c_new_client_device(adap, &info);
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+	if (IS_ERR(newdev))
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 		dev_err(&adap->dev,
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 			"i2c-powermac: Failure to register missing %s\n",
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 			type);
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@@ -287,14 +279,13 @@
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 {
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 	char tmp[16];
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-	/* Note: we to _NOT_ want the standard
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-	 * i2c drivers to match with any of our powermac stuff
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-	 * unless they have been specifically modified to handle
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-	 * it on a case by case basis. For example, for thermal
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-	 * control, things like lm75 etc... shall match with their
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-	 * corresponding windfarm drivers, _NOT_ the generic ones,
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-	 * so we force a prefix of AAPL, onto the modalias to
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-	 * make that happen
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+	/*
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+	 * Note: we do _NOT_ want the standard i2c drivers to match with any of
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+	 * our powermac stuff unless they have been specifically modified to
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+	 * handle it on a case by case basis. For example, for thermal control,
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+	 * things like lm75 etc... shall match with their corresponding
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+	 * windfarm drivers, _NOT_ the generic ones, so we force a prefix of
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+	 * 'MAC', onto the modalias to make that happen
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 	 */
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 	/* First try proper modalias */
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@@ -304,7 +295,7 @@
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 	}
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 	/* Now look for known workarounds */
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-	if (!strcmp(node->name, "deq")) {
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+	if (of_node_name_eq(node, "deq")) {
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 		/* Apple uses address 0x34 for TAS3001 and 0x35 for TAS3004 */
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 		if (addr == 0x34) {
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 			snprintf(type, type_size, "MAC,tas3001");
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@@ -324,14 +315,14 @@
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 {
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 	struct i2c_client *newdev;
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 	struct device_node *node;
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-	bool found_onyx = 0;
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+	bool found_onyx = false;
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 	/*
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 	 * In some cases we end up with the via-pmu node itself, in this
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 	 * case we skip this function completely as the device-tree will
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 	 * not contain anything useful.
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 	 */
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-	if (!strcmp(adap->dev.of_node->name, "via-pmu"))
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+	if (of_node_name_eq(adap->dev.of_node, "via-pmu"))
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 		return;
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327
 
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 	for_each_child_of_node(adap->dev.of_node, node) {
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@@ -367,8 +358,8 @@
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 		info.irq = irq_of_parse_and_map(node, 0);
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 		info.of_node = of_node_get(node);
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-		newdev = i2c_new_device(adap, &info);
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-		if (!newdev) {
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+		newdev = i2c_new_client_device(adap, &info);
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+		if (IS_ERR(newdev)) {
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 			dev_err(&adap->dev, "i2c-powermac: Failure to register"
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 				" %pOF\n", node);
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 			of_node_put(node);
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@@ -388,9 +379,8 @@
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 static int i2c_powermac_probe(struct platform_device *dev)
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 {
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 	struct pmac_i2c_bus *bus = dev_get_platdata(&dev->dev);
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-	struct device_node *parent = NULL;
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+	struct device_node *parent;
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 	struct i2c_adapter *adapter;
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-	const char *basename;
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 	int rc;
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 	if (bus == NULL)
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@@ -407,23 +397,25 @@
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 		parent = of_get_parent(pmac_i2c_get_controller(bus));
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 		if (parent == NULL)
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 			return -EINVAL;
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-		basename = parent->name;
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+		snprintf(adapter->name, sizeof(adapter->name), "%pOFn %d",
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+			 parent,
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+			 pmac_i2c_get_channel(bus));
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+		of_node_put(parent);
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 		break;
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 	case pmac_i2c_bus_pmu:
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-		basename = "pmu";
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+		snprintf(adapter->name, sizeof(adapter->name), "pmu %d",
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+			 pmac_i2c_get_channel(bus));
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 		break;
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 	case pmac_i2c_bus_smu:
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 		/* This is not what we used to do but I'm fixing drivers at
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 		 * the same time as this change
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 		 */
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-		basename = "smu";
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+		snprintf(adapter->name, sizeof(adapter->name), "smu %d",
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+			 pmac_i2c_get_channel(bus));
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 		break;
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 	default:
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 		return -EINVAL;
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 	}
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-	snprintf(adapter->name, sizeof(adapter->name), "%s %d", basename,
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-		 pmac_i2c_get_channel(bus));
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-	of_node_put(parent);
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 	platform_set_drvdata(dev, adapter);
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 	adapter->algo = &i2c_powermac_algorithm;