add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mfd/ti-lmu.c
..
..
@@ -1,18 +1,15 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * TI LMU (Lighting Management Unit) Core Driver
3
4
  *
4
5
  * Copyright 2017 Texas Instruments
5
6
  *
6
7
  * Author: Milo Kim <milo.kim@ti.com>
7
- *
8
- * This program is free software; you can redistribute it and/or modify
9
- * it under the terms of the GNU General Public License version 2 as
10
- * published by the Free Software Foundation.
11
8
  */
12
9
 
13
10
 #include <linux/delay.h>
14
11
 #include <linux/err.h>
15
-#include <linux/gpio.h>
12
+#include <linux/gpio/consumer.h>
16
13
 #include <linux/i2c.h>
17
14
 #include <linux/kernel.h>
18
15
 #include <linux/mfd/core.h>
..
..
@@ -21,28 +18,18 @@
21
18
 #include <linux/module.h>
22
19
 #include <linux/of.h>
23
20
 #include <linux/of_device.h>
24
-#include <linux/of_gpio.h>
25
21
 #include <linux/slab.h>
26
22
 
27
23
 struct ti_lmu_data {
28
-	struct mfd_cell *cells;
24
+	const struct mfd_cell *cells;
29
25
 	int num_cells;
30
26
 	unsigned int max_register;
31
27
 };
32
28
 
33
29
 static int ti_lmu_enable_hw(struct ti_lmu *lmu, enum ti_lmu_id id)
34
30
 {
35
-	int ret;
36
-
37
-	if (gpio_is_valid(lmu->en_gpio)) {
38
-		ret = devm_gpio_request_one(lmu->dev, lmu->en_gpio,
39
-					    GPIOF_OUT_INIT_HIGH, "lmu_hwen");
40
-		if (ret) {
41
-			dev_err(lmu->dev, "Can not request enable GPIO: %d\n",
42
-				ret);
43
-			return ret;
44
-		}
45
-	}
31
+	if (lmu->en_gpio)
32
+		gpiod_set_value(lmu->en_gpio, 1);
46
33
 
47
34
 	/* Delay about 1ms after HW enable pin control */
48
35
 	usleep_range(1000, 1500);
..
..
@@ -57,19 +44,12 @@
57
44
 	return 0;
58
45
 }
59
46
 
60
-static void ti_lmu_disable_hw(struct ti_lmu *lmu)
47
+static void ti_lmu_disable_hw(void *data)
61
48
 {
62
-	if (gpio_is_valid(lmu->en_gpio))
63
-		gpio_set_value(lmu->en_gpio, 0);
49
+	struct ti_lmu *lmu = data;
50
+	if (lmu->en_gpio)
51
+		gpiod_set_value(lmu->en_gpio, 0);
64
52
 }
65
-
66
-static struct mfd_cell lm3532_devices[] = {
67
-	{
68
-		.name          = "ti-lmu-backlight",
69
-		.id            = LM3532,
70
-		.of_compatible = "ti,lm3532-backlight",
71
-	},
72
-};
73
53
 
74
54
 #define LM363X_REGULATOR(_id)			\
75
55
 {						\
..
..
@@ -78,7 +58,7 @@
78
58
 	.of_compatible = "ti,lm363x-regulator",	\
79
59
 }						\
80
60
 
81
-static struct mfd_cell lm3631_devices[] = {
61
+static const struct mfd_cell lm3631_devices[] = {
82
62
 	LM363X_REGULATOR(LM3631_BOOST),
83
63
 	LM363X_REGULATOR(LM3631_LDO_CONT),
84
64
 	LM363X_REGULATOR(LM3631_LDO_OREF),
..
..
@@ -91,7 +71,7 @@
91
71
 	},
92
72
 };
93
73
 
94
-static struct mfd_cell lm3632_devices[] = {
74
+static const struct mfd_cell lm3632_devices[] = {
95
75
 	LM363X_REGULATOR(LM3632_BOOST),
96
76
 	LM363X_REGULATOR(LM3632_LDO_POS),
97
77
 	LM363X_REGULATOR(LM3632_LDO_NEG),
..
..
@@ -102,7 +82,7 @@
102
82
 	},
103
83
 };
104
84
 
105
-static struct mfd_cell lm3633_devices[] = {
85
+static const struct mfd_cell lm3633_devices[] = {
106
86
 	{
107
87
 		.name          = "ti-lmu-backlight",
108
88
 		.id            = LM3633,
..
..
@@ -120,7 +100,7 @@
120
100
 	},
121
101
 };
122
102
 
123
-static struct mfd_cell lm3695_devices[] = {
103
+static const struct mfd_cell lm3695_devices[] = {
124
104
 	{
125
105
 		.name          = "ti-lmu-backlight",
126
106
 		.id            = LM3695,
..
..
@@ -128,17 +108,14 @@
128
108
 	},
129
109
 };
130
110
 
131
-static struct mfd_cell lm3697_devices[] = {
111
+static const struct mfd_cell lm36274_devices[] = {
112
+	LM363X_REGULATOR(LM36274_BOOST),
113
+	LM363X_REGULATOR(LM36274_LDO_POS),
114
+	LM363X_REGULATOR(LM36274_LDO_NEG),
132
115
 	{
133
-		.name          = "ti-lmu-backlight",
134
-		.id            = LM3697,
135
-		.of_compatible = "ti,lm3697-backlight",
136
-	},
137
-	/* Monitoring driver for open/short circuit detection */
138
-	{
139
-		.name          = "ti-lmu-fault-monitor",
140
-		.id            = LM3697,
141
-		.of_compatible = "ti,lm3697-fault-monitor",
116
+		.name          = "lm36274-leds",
117
+		.id            = LM36274,
118
+		.of_compatible = "ti,lm36274-backlight",
142
119
 	},
143
120
 };
144
121
 
..
..
@@ -150,41 +127,27 @@
150
127
 	.max_register = max_reg,		\
151
128
 }						\
152
129
 
153
-TI_LMU_DATA(lm3532, LM3532_MAX_REG);
154
130
 TI_LMU_DATA(lm3631, LM3631_MAX_REG);
155
131
 TI_LMU_DATA(lm3632, LM3632_MAX_REG);
156
132
 TI_LMU_DATA(lm3633, LM3633_MAX_REG);
157
133
 TI_LMU_DATA(lm3695, LM3695_MAX_REG);
158
-TI_LMU_DATA(lm3697, LM3697_MAX_REG);
159
-
160
-static const struct of_device_id ti_lmu_of_match[] = {
161
-	{ .compatible = "ti,lm3532", .data = &lm3532_data },
162
-	{ .compatible = "ti,lm3631", .data = &lm3631_data },
163
-	{ .compatible = "ti,lm3632", .data = &lm3632_data },
164
-	{ .compatible = "ti,lm3633", .data = &lm3633_data },
165
-	{ .compatible = "ti,lm3695", .data = &lm3695_data },
166
-	{ .compatible = "ti,lm3697", .data = &lm3697_data },
167
-	{ }
168
-};
169
-MODULE_DEVICE_TABLE(of, ti_lmu_of_match);
134
+TI_LMU_DATA(lm36274, LM36274_MAX_REG);
170
135
 
171
136
 static int ti_lmu_probe(struct i2c_client *cl, const struct i2c_device_id *id)
172
137
 {
173
138
 	struct device *dev = &cl->dev;
174
-	const struct of_device_id *match;
175
139
 	const struct ti_lmu_data *data;
176
140
 	struct regmap_config regmap_cfg;
177
141
 	struct ti_lmu *lmu;
178
142
 	int ret;
179
143
 
180
-	match = of_match_device(ti_lmu_of_match, dev);
181
-	if (!match)
182
-		return -ENODEV;
183
144
 	/*
184
145
 	 * Get device specific data from of_match table.
185
146
 	 * This data is defined by using TI_LMU_DATA() macro.
186
147
 	 */
187
-	data = (struct ti_lmu_data *)match->data;
148
+	data = of_device_get_match_data(dev);
149
+	if (!data)
150
+		return -ENODEV;
188
151
 
189
152
 	lmu = devm_kzalloc(dev, sizeof(*lmu), GFP_KERNEL);
190
153
 	if (!lmu)
..
..
@@ -204,8 +167,18 @@
204
167
 		return PTR_ERR(lmu->regmap);
205
168
 
206
169
 	/* HW enable pin control and additional power up sequence if required */
207
-	lmu->en_gpio = of_get_named_gpio(dev->of_node, "enable-gpios", 0);
170
+	lmu->en_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_HIGH);
171
+	if (IS_ERR(lmu->en_gpio)) {
172
+		ret = PTR_ERR(lmu->en_gpio);
173
+		dev_err(dev, "Can not request enable GPIO: %d\n", ret);
174
+		return ret;
175
+	}
176
+
208
177
 	ret = ti_lmu_enable_hw(lmu, id->driver_data);
178
+	if (ret)
179
+		return ret;
180
+
181
+	ret = devm_add_action_or_reset(dev, ti_lmu_disable_hw, lmu);
209
182
 	if (ret)
210
183
 		return ret;
211
184
 
..
..
@@ -218,33 +191,32 @@
218
191
 
219
192
 	i2c_set_clientdata(cl, lmu);
220
193
 
221
-	return mfd_add_devices(lmu->dev, 0, data->cells,
222
-			       data->num_cells, NULL, 0, NULL);
194
+	return devm_mfd_add_devices(lmu->dev, 0, data->cells,
195
+				    data->num_cells, NULL, 0, NULL);
223
196
 }
224
197
 
225
-static int ti_lmu_remove(struct i2c_client *cl)
226
-{
227
-	struct ti_lmu *lmu = i2c_get_clientdata(cl);
228
-
229
-	ti_lmu_disable_hw(lmu);
230
-	mfd_remove_devices(lmu->dev);
231
-	return 0;
232
-}
198
+static const struct of_device_id ti_lmu_of_match[] = {
199
+	{ .compatible = "ti,lm3631", .data = &lm3631_data },
200
+	{ .compatible = "ti,lm3632", .data = &lm3632_data },
201
+	{ .compatible = "ti,lm3633", .data = &lm3633_data },
202
+	{ .compatible = "ti,lm3695", .data = &lm3695_data },
203
+	{ .compatible = "ti,lm36274", .data = &lm36274_data },
204
+	{ }
205
+};
206
+MODULE_DEVICE_TABLE(of, ti_lmu_of_match);
233
207
 
234
208
 static const struct i2c_device_id ti_lmu_ids[] = {
235
-	{ "lm3532", LM3532 },
236
209
 	{ "lm3631", LM3631 },
237
210
 	{ "lm3632", LM3632 },
238
211
 	{ "lm3633", LM3633 },
239
212
 	{ "lm3695", LM3695 },
240
-	{ "lm3697", LM3697 },
213
+	{ "lm36274", LM36274 },
241
214
 	{ }
242
215
 };
243
216
 MODULE_DEVICE_TABLE(i2c, ti_lmu_ids);
244
217
 
245
218
 static struct i2c_driver ti_lmu_driver = {
246
219
 	.probe = ti_lmu_probe,
247
-	.remove = ti_lmu_remove,
248
220
 	.driver = {
249
221
 		.name = "ti-lmu",
250
222
 		.of_match_table = ti_lmu_of_match,