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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/staging/iio/frequency/ad9832.c
..
..
@@ -1,26 +1,28 @@
1
+// SPDX-License-Identifier: GPL-2.0
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2
 /*
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  * AD9832 SPI DDS driver
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  *
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  * Copyright 2011 Analog Devices Inc.
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- *
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- * Licensed under the GPL-2.
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6
  */
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7
 
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-#include <linux/device.h>
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-#include <linux/kernel.h>
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-#include <linux/slab.h>
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-#include <linux/sysfs.h>
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-#include <linux/spi/spi.h>
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-#include <linux/regulator/consumer.h>
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-#include <linux/err.h>
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-#include <linux/module.h>
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8
 #include <asm/div64.h>
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+
10
+#include <linux/clk.h>
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+#include <linux/device.h>
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+#include <linux/err.h>
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/regulator/consumer.h>
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+#include <linux/slab.h>
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+#include <linux/spi/spi.h>
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+#include <linux/sysfs.h>
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19
 
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 #include <linux/iio/iio.h>
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21
 #include <linux/iio/sysfs.h>
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-#include "dds.h"
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22
 
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 #include "ad9832.h"
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+
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+#include "dds.h"
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26
 
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 /* Registers */
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28
 
..
..
@@ -94,7 +96,7 @@
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96
 	struct spi_device		*spi;
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97
 	struct regulator		*avdd;
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98
 	struct regulator		*dvdd;
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-	unsigned long			mclk;
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+	struct clk			*mclk;
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100
 	unsigned short			ctrl_fp;
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 	unsigned short			ctrl_ss;
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 	unsigned short			ctrl_src;
..
..
@@ -129,10 +131,10 @@
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 {
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 	unsigned long regval;
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133
 
132
-	if (fout > (st->mclk / 2))
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+	if (fout > (clk_get_rate(st->mclk) / 2))
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135
 		return -EINVAL;
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136
 
135
-	regval = ad9832_calc_freqreg(st->mclk, fout);
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+	regval = ad9832_calc_freqreg(clk_get_rate(st->mclk), fout);
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138
 
137
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 	st->freq_data[0] = cpu_to_be16((AD9832_CMD_FRE8BITSW << CMD_SHIFT) |
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140
 					(addr << ADD_SHIFT) |
..
..
@@ -333,11 +335,19 @@
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 		goto error_disable_avdd;
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336
 	}
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337
 
336
-	st->mclk = pdata->mclk;
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+	st->mclk = devm_clk_get(&spi->dev, "mclk");
339
+	if (IS_ERR(st->mclk)) {
340
+		ret = PTR_ERR(st->mclk);
341
+		goto error_disable_dvdd;
342
+	}
343
+
344
+	ret = clk_prepare_enable(st->mclk);
345
+	if (ret < 0)
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+		goto error_disable_dvdd;
347
+
337
348
 	st->spi = spi;
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349
 	mutex_init(&st->lock);
339
350
 
340
-	indio_dev->dev.parent = &spi->dev;
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351
 	indio_dev->name = spi_get_device_id(spi)->name;
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352
 	indio_dev->info = &ad9832_info;
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353
 	indio_dev->modes = INDIO_DIRECT_MODE;
..
..
@@ -384,39 +394,41 @@
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 	ret = spi_sync(st->spi, &st->msg);
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395
 	if (ret) {
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 		dev_err(&spi->dev, "device init failed\n");
387
-		goto error_disable_dvdd;
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+		goto error_unprepare_mclk;
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398
 	}
389
399
 
390
400
 	ret = ad9832_write_frequency(st, AD9832_FREQ0HM, pdata->freq0);
391
401
 	if (ret)
392
-		goto error_disable_dvdd;
402
+		goto error_unprepare_mclk;
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403
 
394
404
 	ret = ad9832_write_frequency(st, AD9832_FREQ1HM, pdata->freq1);
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405
 	if (ret)
396
-		goto error_disable_dvdd;
406
+		goto error_unprepare_mclk;
397
407
 
398
408
 	ret = ad9832_write_phase(st, AD9832_PHASE0H, pdata->phase0);
399
409
 	if (ret)
400
-		goto error_disable_dvdd;
410
+		goto error_unprepare_mclk;
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411
 
402
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 	ret = ad9832_write_phase(st, AD9832_PHASE1H, pdata->phase1);
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413
 	if (ret)
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-		goto error_disable_dvdd;
414
+		goto error_unprepare_mclk;
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415
 
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416
 	ret = ad9832_write_phase(st, AD9832_PHASE2H, pdata->phase2);
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417
 	if (ret)
408
-		goto error_disable_dvdd;
418
+		goto error_unprepare_mclk;
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419
 
410
420
 	ret = ad9832_write_phase(st, AD9832_PHASE3H, pdata->phase3);
411
421
 	if (ret)
412
-		goto error_disable_dvdd;
422
+		goto error_unprepare_mclk;
413
423
 
414
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 	ret = iio_device_register(indio_dev);
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425
 	if (ret)
416
-		goto error_disable_dvdd;
426
+		goto error_unprepare_mclk;
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427
 
418
428
 	return 0;
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429
 
430
+error_unprepare_mclk:
431
+	clk_disable_unprepare(st->mclk);
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432
 error_disable_dvdd:
421
433
 	regulator_disable(st->dvdd);
422
434
 error_disable_avdd:
..
..
@@ -431,6 +443,7 @@
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443
 	struct ad9832_state *st = iio_priv(indio_dev);
432
444
 
433
445
 	iio_device_unregister(indio_dev);
446
+	clk_disable_unprepare(st->mclk);
434
447
 	regulator_disable(st->dvdd);
435
448
 	regulator_disable(st->avdd);
436
449
 
..
..
@@ -454,6 +467,6 @@
454
467
 };
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468
 module_spi_driver(ad9832_driver);
456
469
 
457
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
470
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
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471
 MODULE_DESCRIPTION("Analog Devices AD9832/AD9835 DDS");
459
472
 MODULE_LICENSE("GPL v2");