modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/drivers/iio/adc/ad7887.c
..
..
@@ -1,9 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * AD7887 SPI ADC driver
3
4
  *
4
5
  * Copyright 2010-2011 Analog Devices Inc.
5
- *
6
- * Licensed under the GPL-2.
7
6
  */
8
7
 
9
8
 #include <linux/device.h>
..
..
@@ -44,11 +43,17 @@
44
43
 /**
45
44
  * struct ad7887_chip_info - chip specifc information
46
45
  * @int_vref_mv:	the internal reference voltage
47
- * @channel:		channel specification
46
+ * @channels:		channels specification
47
+ * @num_channels:	number of channels
48
+ * @dual_channels:	channels specification in dual mode
49
+ * @num_dual_channels:	number of channels in dual mode
48
50
  */
49
51
 struct ad7887_chip_info {
50
52
 	u16				int_vref_mv;
51
-	struct iio_chan_spec		channel[3];
53
+	const struct iio_chan_spec	*channels;
54
+	unsigned int			num_channels;
55
+	const struct iio_chan_spec	*dual_channels;
56
+	unsigned int			num_dual_channels;
52
57
 };
53
58
 
54
59
 struct ad7887_state {
..
..
@@ -104,7 +109,7 @@
104
109
 	return spi_sync(st->spi, &st->msg[AD7887_CH0]);
105
110
 }
106
111
 
107
-/**
112
+/*
108
113
  * ad7887_trigger_handler() bh of trigger launched polling to ring buffer
109
114
  *
110
115
  * Currently there is no option in this driver to disable the saving of
..
..
@@ -131,8 +136,6 @@
131
136
 
132
137
 static const struct iio_buffer_setup_ops ad7887_ring_setup_ops = {
133
138
 	.preenable = &ad7887_ring_preenable,
134
-	.postenable = &iio_triggered_buffer_postenable,
135
-	.predisable = &iio_triggered_buffer_predisable,
136
139
 	.postdisable = &ad7887_ring_postdisable,
137
140
 };
138
141
 
..
..
@@ -184,45 +187,43 @@
184
187
 	return -EINVAL;
185
188
 }
186
189
 
190
+#define AD7887_CHANNEL(x) { \
191
+	.type = IIO_VOLTAGE, \
192
+	.indexed = 1, \
193
+	.channel = (x), \
194
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
195
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
196
+	.address = (x), \
197
+	.scan_index = (x), \
198
+	.scan_type = { \
199
+		.sign = 'u', \
200
+		.realbits = 12, \
201
+		.storagebits = 16, \
202
+		.shift = 0, \
203
+		.endianness = IIO_BE, \
204
+	}, \
205
+}
206
+
207
+static const struct iio_chan_spec ad7887_channels[] = {
208
+	AD7887_CHANNEL(0),
209
+	IIO_CHAN_SOFT_TIMESTAMP(1),
210
+};
211
+
212
+static const struct iio_chan_spec ad7887_dual_channels[] = {
213
+	AD7887_CHANNEL(0),
214
+	AD7887_CHANNEL(1),
215
+	IIO_CHAN_SOFT_TIMESTAMP(2),
216
+};
187
217
 
188
218
 static const struct ad7887_chip_info ad7887_chip_info_tbl[] = {
189
219
 	/*
190
220
 	 * More devices added in future
191
221
 	 */
192
222
 	[ID_AD7887] = {
193
-		.channel[0] = {
194
-			.type = IIO_VOLTAGE,
195
-			.indexed = 1,
196
-			.channel = 1,
197
-			.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
198
-			.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
199
-			.address = 1,
200
-			.scan_index = 1,
201
-			.scan_type = {
202
-				.sign = 'u',
203
-				.realbits = 12,
204
-				.storagebits = 16,
205
-				.shift = 0,
206
-				.endianness = IIO_BE,
207
-			},
208
-		},
209
-		.channel[1] = {
210
-			.type = IIO_VOLTAGE,
211
-			.indexed = 1,
212
-			.channel = 0,
213
-			.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
214
-			.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
215
-			.address = 0,
216
-			.scan_index = 0,
217
-			.scan_type = {
218
-				.sign = 'u',
219
-				.realbits = 12,
220
-				.storagebits = 16,
221
-				.shift = 0,
222
-				.endianness = IIO_BE,
223
-			},
224
-		},
225
-		.channel[2] = IIO_CHAN_SOFT_TIMESTAMP(2),
223
+		.channels = ad7887_channels,
224
+		.num_channels = ARRAY_SIZE(ad7887_channels),
225
+		.dual_channels = ad7887_dual_channels,
226
+		.num_dual_channels = ARRAY_SIZE(ad7887_dual_channels),
226
227
 		.int_vref_mv = 2500,
227
228
 	},
228
229
 };
..
..
@@ -261,9 +262,6 @@
261
262
 	spi_set_drvdata(spi, indio_dev);
262
263
 	st->spi = spi;
263
264
 
264
-	/* Estabilish that the iio_dev is a child of the spi device */
265
-	indio_dev->dev.parent = &spi->dev;
266
-	indio_dev->dev.of_node = spi->dev.of_node;
267
265
 	indio_dev->name = spi_get_device_id(spi)->name;
268
266
 	indio_dev->info = &ad7887_info;
269
267
 	indio_dev->modes = INDIO_DIRECT_MODE;
..
..
@@ -307,11 +305,11 @@
307
305
 		spi_message_init(&st->msg[AD7887_CH1]);
308
306
 		spi_message_add_tail(&st->xfer[3], &st->msg[AD7887_CH1]);
309
307
 
310
-		indio_dev->channels = st->chip_info->channel;
311
-		indio_dev->num_channels = 3;
308
+		indio_dev->channels = st->chip_info->dual_channels;
309
+		indio_dev->num_channels = st->chip_info->num_dual_channels;
312
310
 	} else {
313
-		indio_dev->channels = &st->chip_info->channel[1];
314
-		indio_dev->num_channels = 2;
311
+		indio_dev->channels = st->chip_info->channels;
312
+		indio_dev->num_channels = st->chip_info->num_channels;
315
313
 	}
316
314
 
317
315
 	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
..
..
@@ -362,6 +360,6 @@
362
360
 };
363
361
 module_spi_driver(ad7887_driver);
364
362
 
365
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
363
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
366
364
 MODULE_DESCRIPTION("Analog Devices AD7887 ADC");
367
365
 MODULE_LICENSE("GPL v2");