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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/leds/leds-pca955x.c
....@@ -1,11 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Copyright 2007-2008 Extreme Engineering Solutions, Inc.
34  *
45  * Author: Nate Case <ncase@xes-inc.com>
5
- *
6
- * This file is subject to the terms and conditions of version 2 of
7
- * the GNU General Public License.  See the file COPYING in the main
8
- * directory of this archive for more details.
96  *
107  * LED driver for various PCA955x I2C LED drivers
118  *
....@@ -40,16 +37,15 @@
4037  *  bits the chip supports.
4138  */
4239 
43
-#include <linux/acpi.h>
4440 #include <linux/ctype.h>
4541 #include <linux/delay.h>
4642 #include <linux/err.h>
47
-#include <linux/gpio.h>
43
+#include <linux/gpio/driver.h>
4844 #include <linux/i2c.h>
4945 #include <linux/leds.h>
5046 #include <linux/module.h>
51
-#include <linux/of_device.h>
5247 #include <linux/of.h>
48
+#include <linux/property.h>
5349 #include <linux/slab.h>
5450 #include <linux/string.h>
5551 
....@@ -69,6 +65,7 @@
6965 	pca9550,
7066 	pca9551,
7167 	pca9552,
68
+	ibm_pca9552,
7269 	pca9553,
7370 };
7471 
....@@ -94,6 +91,11 @@
9491 		.slv_addr	= /* 1100xxx */ 0x60,
9592 		.slv_addr_shift	= 3,
9693 	},
94
+	[ibm_pca9552] = {
95
+		.bits		= 16,
96
+		.slv_addr	= /* 0110xxx */ 0x30,
97
+		.slv_addr_shift	= 3,
98
+	},
9799 	[pca9553] = {
98100 		.bits		= 4,
99101 		.slv_addr	= /* 110001x */ 0x62,
....@@ -105,19 +107,11 @@
105107 	{ "pca9550", pca9550 },
106108 	{ "pca9551", pca9551 },
107109 	{ "pca9552", pca9552 },
110
+	{ "ibm-pca9552", ibm_pca9552 },
108111 	{ "pca9553", pca9553 },
109112 	{ }
110113 };
111114 MODULE_DEVICE_TABLE(i2c, pca955x_id);
112
-
113
-static const struct acpi_device_id pca955x_acpi_ids[] = {
114
-	{ "PCA9550",  pca9550 },
115
-	{ "PCA9551",  pca9551 },
116
-	{ "PCA9552",  pca9552 },
117
-	{ "PCA9553",  pca9553 },
118
-	{ }
119
-};
120
-MODULE_DEVICE_TABLE(acpi, pca955x_acpi_ids);
121115 
122116 struct pca955x {
123117 	struct mutex lock;
....@@ -373,16 +367,14 @@
373367 }
374368 #endif /* CONFIG_LEDS_PCA955X_GPIO */
375369 
376
-#if IS_ENABLED(CONFIG_OF)
377370 static struct pca955x_platform_data *
378
-pca955x_pdata_of_init(struct i2c_client *client, struct pca955x_chipdef *chip)
371
+pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
379372 {
380
-	struct device_node *np = client->dev.of_node;
381
-	struct device_node *child;
382373 	struct pca955x_platform_data *pdata;
374
+	struct fwnode_handle *child;
383375 	int count;
384376 
385
-	count = of_get_child_count(np);
377
+	count = device_get_child_node_count(&client->dev);
386378 	if (!count || count > chip->bits)
387379 		return ERR_PTR(-ENODEV);
388380 
....@@ -396,24 +388,25 @@
396388 	if (!pdata->leds)
397389 		return ERR_PTR(-ENOMEM);
398390 
399
-	for_each_child_of_node(np, child) {
391
+	device_for_each_child_node(&client->dev, child) {
400392 		const char *name;
401393 		u32 reg;
402394 		int res;
403395 
404
-		res = of_property_read_u32(child, "reg", &reg);
396
+		res = fwnode_property_read_u32(child, "reg", &reg);
405397 		if ((res != 0) || (reg >= chip->bits))
406398 			continue;
407399 
408
-		if (of_property_read_string(child, "label", &name))
409
-			name = child->name;
400
+		res = fwnode_property_read_string(child, "label", &name);
401
+		if ((res != 0) && is_of_node(child))
402
+			name = to_of_node(child)->name;
410403 
411404 		snprintf(pdata->leds[reg].name, sizeof(pdata->leds[reg].name),
412405 			 "%s", name);
413406 
414407 		pdata->leds[reg].type = PCA955X_TYPE_LED;
415
-		of_property_read_u32(child, "type", &pdata->leds[reg].type);
416
-		of_property_read_string(child, "linux,default-trigger",
408
+		fwnode_property_read_u32(child, "type", &pdata->leds[reg].type);
409
+		fwnode_property_read_string(child, "linux,default-trigger",
417410 					&pdata->leds[reg].default_trigger);
418411 	}
419412 
....@@ -426,18 +419,11 @@
426419 	{ .compatible = "nxp,pca9550", .data = (void *)pca9550 },
427420 	{ .compatible = "nxp,pca9551", .data = (void *)pca9551 },
428421 	{ .compatible = "nxp,pca9552", .data = (void *)pca9552 },
422
+	{ .compatible = "ibm,pca9552", .data = (void *)ibm_pca9552 },
429423 	{ .compatible = "nxp,pca9553", .data = (void *)pca9553 },
430424 	{},
431425 };
432
-
433426 MODULE_DEVICE_TABLE(of, of_pca955x_match);
434
-#else
435
-static struct pca955x_platform_data *
436
-pca955x_pdata_of_init(struct i2c_client *client, struct pca955x_chipdef *chip)
437
-{
438
-	return ERR_PTR(-ENODEV);
439
-}
440
-#endif
441427 
442428 static int pca955x_probe(struct i2c_client *client,
443429 					const struct i2c_device_id *id)
....@@ -450,20 +436,11 @@
450436 	struct pca955x_platform_data *pdata;
451437 	int ngpios = 0;
452438 
453
-	if (id) {
454
-		chip = &pca955x_chipdefs[id->driver_data];
455
-	} else {
456
-		const struct acpi_device_id *acpi_id;
457
-
458
-		acpi_id = acpi_match_device(pca955x_acpi_ids, &client->dev);
459
-		if (!acpi_id)
460
-			return -ENODEV;
461
-		chip = &pca955x_chipdefs[acpi_id->driver_data];
462
-	}
463
-	adapter = to_i2c_adapter(client->dev.parent);
439
+	chip = &pca955x_chipdefs[id->driver_data];
440
+	adapter = client->adapter;
464441 	pdata = dev_get_platdata(&client->dev);
465442 	if (!pdata) {
466
-		pdata =	pca955x_pdata_of_init(client, chip);
443
+		pdata =	pca955x_get_pdata(client, chip);
467444 		if (IS_ERR(pdata))
468445 			return PTR_ERR(pdata);
469446 	}
....@@ -602,8 +579,7 @@
602579 static struct i2c_driver pca955x_driver = {
603580 	.driver = {
604581 		.name	= "leds-pca955x",
605
-		.acpi_match_table = ACPI_PTR(pca955x_acpi_ids),
606
-		.of_match_table = of_match_ptr(of_pca955x_match),
582
+		.of_match_table = of_pca955x_match,
607583 	},
608584 	.probe	= pca955x_probe,
609585 	.id_table = pca955x_id,