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path: root/drivers/staging/iio/frequency/ad9910.c
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Diffstat (limited to 'drivers/staging/iio/frequency/ad9910.c')
-rw-r--r--drivers/staging/iio/frequency/ad9910.c371
1 files changed, 0 insertions, 371 deletions
diff --git a/drivers/staging/iio/frequency/ad9910.c b/drivers/staging/iio/frequency/ad9910.c
deleted file mode 100644
index 755e0482681a..000000000000
--- a/drivers/staging/iio/frequency/ad9910.c
+++ /dev/null
@@ -1,371 +0,0 @@
-/*
- * Driver for ADI Direct Digital Synthesis ad9910
- *
- * Copyright (c) 2010 Analog Devices Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-#include <linux/types.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-
-#define DRV_NAME "ad9910"
-
-#define CFR1 0x0
-#define CFR2 0x1
-#define CFR3 0x2
-
-#define AUXDAC 0x3
-#define IOUPD 0x4
-#define FTW 0x7
-#define POW 0x8
-#define ASF 0x9
-#define MULTC 0x0A
-#define DIG_RAMPL 0x0B
-#define DIG_RAMPS 0x0C
-#define DIG_RAMPR 0x0D
-#define SIN_TONEP0 0x0E
-#define SIN_TONEP1 0x0F
-#define SIN_TONEP2 0x10
-#define SIN_TONEP3 0x11
-#define SIN_TONEP4 0x12
-#define SIN_TONEP5 0x13
-#define SIN_TONEP6 0x14
-#define SIN_TONEP7 0x15
-
-#define RAM_ENABLE (1 << 7)
-
-#define MANUAL_OSK (1 << 7)
-#define INVSIC (1 << 6)
-#define DDS_SINEOP (1)
-
-#define AUTO_OSK (1)
-#define OSKEN (1 << 1)
-#define LOAD_ARR (1 << 2)
-#define CLR_PHA (1 << 3)
-#define CLR_DIG (1 << 4)
-#define ACLR_PHA (1 << 5)
-#define ACLR_DIG (1 << 6)
-#define LOAD_LRR (1 << 7)
-
-#define LSB_FST (1)
-#define SDIO_IPT (1 << 1)
-#define EXT_PWD (1 << 3)
-#define ADAC_PWD (1 << 4)
-#define REFCLK_PWD (1 << 5)
-#define DAC_PWD (1 << 6)
-#define DIG_PWD (1 << 7)
-
-#define ENA_AMP (1)
-#define READ_FTW (1)
-#define DIGR_LOW (1 << 1)
-#define DIGR_HIGH (1 << 2)
-#define DIGR_ENA (1 << 3)
-#define SYNCCLK_ENA (1 << 6)
-#define ITER_IOUPD (1 << 7)
-
-#define TX_ENA (1 << 1)
-#define PDCLK_INV (1 << 2)
-#define PDCLK_ENB (1 << 3)
-
-#define PARA_ENA (1 << 4)
-#define SYNC_DIS (1 << 5)
-#define DATA_ASS (1 << 6)
-#define MATCH_ENA (1 << 7)
-
-#define PLL_ENA (1)
-#define PFD_RST (1 << 2)
-#define REFCLK_RST (1 << 6)
-#define REFCLK_BYP (1 << 7)
-
-/* Register format: 1 byte addr + value */
-struct ad9910_config {
- u8 auxdac[5];
- u8 ioupd[5];
- u8 ftw[5];
- u8 pow[3];
- u8 asf[5];
- u8 multc[5];
- u8 dig_rampl[9];
- u8 dig_ramps[9];
- u8 dig_rampr[5];
- u8 sin_tonep0[9];
- u8 sin_tonep1[9];
- u8 sin_tonep2[9];
- u8 sin_tonep3[9];
- u8 sin_tonep4[9];
- u8 sin_tonep5[9];
- u8 sin_tonep6[9];
- u8 sin_tonep7[9];
-};
-
-struct ad9910_state {
- struct mutex lock;
- struct spi_device *sdev;
-};
-
-static ssize_t ad9910_set_parameter(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct spi_transfer xfer;
- int ret;
- struct ad9910_config *config = (struct ad9910_config *)buf;
- struct iio_dev *idev = dev_to_iio_dev(dev);
- struct ad9910_state *st = iio_priv(idev);
-
- xfer.len = 5;
- xfer.tx_buf = &config->auxdac[0];
- mutex_lock(&st->lock);
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->ioupd[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->ftw[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 3;
- xfer.tx_buf = &config->pow[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->asf[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->multc[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->dig_rampl[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->dig_ramps[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->dig_rampr[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep0[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep1[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep2[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep3[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep4[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep5[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep6[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep7[0];
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-error_ret:
- mutex_unlock(&st->lock);
-
- return ret ? ret : len;
-}
-
-static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9910_set_parameter, 0);
-
-static void ad9910_init(struct ad9910_state *st)
-{
- struct spi_transfer xfer;
- int ret;
- u8 cfr[5];
-
- cfr[0] = CFR1;
- cfr[1] = 0;
- cfr[2] = MANUAL_OSK | INVSIC | DDS_SINEOP;
- cfr[3] = AUTO_OSK | OSKEN | ACLR_PHA | ACLR_DIG | LOAD_LRR;
- cfr[4] = 0;
-
- mutex_lock(&st->lock);
-
- xfer.len = 5;
- xfer.tx_buf = &cfr;
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- cfr[0] = CFR2;
- cfr[1] = ENA_AMP;
- cfr[2] = READ_FTW | DIGR_ENA | ITER_IOUPD;
- cfr[3] = TX_ENA | PDCLK_INV | PDCLK_ENB;
- cfr[4] = PARA_ENA;
-
- xfer.len = 5;
- xfer.tx_buf = &cfr;
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
- cfr[0] = CFR3;
- cfr[1] = PLL_ENA;
- cfr[2] = 0;
- cfr[3] = REFCLK_RST | REFCLK_BYP;
- cfr[4] = 0;
-
- xfer.len = 5;
- xfer.tx_buf = &cfr;
-
- ret = spi_sync_transfer(st->sdev, &xfer, 1);
- if (ret)
- goto error_ret;
-
-error_ret:
- mutex_unlock(&st->lock);
-
-
-
-}
-
-static struct attribute *ad9910_attributes[] = {
- &iio_dev_attr_dds.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad9910_attribute_group = {
- .attrs = ad9910_attributes,
-};
-
-static const struct iio_info ad9910_info = {
- .attrs = &ad9910_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int ad9910_probe(struct spi_device *spi)
-{
- struct ad9910_state *st;
- struct iio_dev *idev;
- int ret = 0;
-
- idev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
- if (!idev)
- return -ENOMEM;
- spi_set_drvdata(spi, idev);
- st = iio_priv(idev);
- mutex_init(&st->lock);
- st->sdev = spi;
-
- idev->dev.parent = &spi->dev;
- idev->info = &ad9910_info;
- idev->modes = INDIO_DIRECT_MODE;
-
- ret = iio_device_register(idev);
- if (ret)
- return ret;
- spi->max_speed_hz = 2000000;
- spi->mode = SPI_MODE_3;
- spi->bits_per_word = 8;
- spi_setup(spi);
- ad9910_init(st);
- return 0;
-}
-
-static int ad9910_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
-
- return 0;
-}
-
-static struct spi_driver ad9910_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
- .probe = ad9910_probe,
- .remove = ad9910_remove,
-};
-module_spi_driver(ad9910_driver);
-
-MODULE_AUTHOR("Cliff Cai");
-MODULE_DESCRIPTION("Analog Devices ad9910 driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:" DRV_NAME);
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-12 02:11:34 +0000