diff options
Diffstat (limited to 'drivers/staging/iio/dds/ad9910.c')
-rw-r--r-- | drivers/staging/iio/dds/ad9910.c | 421 |
1 files changed, 0 insertions, 421 deletions
diff --git a/drivers/staging/iio/dds/ad9910.c b/drivers/staging/iio/dds/ad9910.c deleted file mode 100644 index 6e7a97e..0000000 --- a/drivers/staging/iio/dds/ad9910.c +++ /dev/null @@ -1,421 +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_message msg; - struct spi_transfer xfer; - int ret; - struct ad9910_config *config = (struct ad9910_config *)buf; - struct iio_dev *idev = dev_get_drvdata(dev); - struct ad9910_state *st = iio_priv(idev); - - xfer.len = 5; - xfer.tx_buf = &config->auxdac[0]; - mutex_lock(&st->lock); - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 5; - xfer.tx_buf = &config->ioupd[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 5; - xfer.tx_buf = &config->ftw[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 3; - xfer.tx_buf = &config->pow[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 5; - xfer.tx_buf = &config->asf[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 5; - xfer.tx_buf = &config->multc[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->dig_rampl[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->dig_ramps[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 5; - xfer.tx_buf = &config->dig_rampr[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep0[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep1[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep2[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep3[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep4[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep5[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep6[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - if (ret) - goto error_ret; - - xfer.len = 9; - xfer.tx_buf = &config->sin_tonep7[0]; - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - 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_message msg; - 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 = 𝔠 - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - 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 = 𝔠 - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - 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 = 𝔠 - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - ret = spi_sync(st->sdev, &msg); - 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 __devinit ad9910_probe(struct spi_device *spi) -{ - struct ad9910_state *st; - struct iio_dev *idev; - int ret = 0; - - idev = iio_device_alloc(sizeof(*st)); - if (idev == NULL) { - ret = -ENOMEM; - goto error_ret; - } - 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) - goto error_free_dev; - spi->max_speed_hz = 2000000; - spi->mode = SPI_MODE_3; - spi->bits_per_word = 8; - spi_setup(spi); - ad9910_init(st); - return 0; - -error_free_dev: - iio_device_free(idev); -error_ret: - return ret; -} - -static int __devexit ad9910_remove(struct spi_device *spi) -{ - iio_device_unregister(spi_get_drvdata(spi)); - iio_device_free(spi_get_drvdata(spi)); - - return 0; -} - -static struct spi_driver ad9910_driver = { - .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, - }, - .probe = ad9910_probe, - .remove = __devexit_p(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); |