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path: root/drivers/staging/iio/dac/ad5791.c
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Diffstat (limited to 'drivers/staging/iio/dac/ad5791.c')
-rw-r--r--drivers/staging/iio/dac/ad5791.c54
1 files changed, 38 insertions, 16 deletions
diff --git a/drivers/staging/iio/dac/ad5791.c b/drivers/staging/iio/dac/ad5791.c
index c4a258d..acfd13b 100644
--- a/drivers/staging/iio/dac/ad5791.c
+++ b/drivers/staging/iio/dac/ad5791.c
@@ -1,5 +1,5 @@
/*
- * AD5791, AD5791 Voltage Output Digital to Analog Converter
+ * AD5760, AD5780, AD5781, AD5791 Voltage Output Digital to Analog Converter
*
* Copyright 2011 Analog Devices Inc.
*
@@ -242,17 +242,6 @@ static const struct attribute_group ad5791_attribute_group = {
.attrs = ad5791_attributes,
};
-static const struct ad5791_chip_info ad5791_chip_info_tbl[] = {
- [ID_AD5791] = {
- .bits = 20,
- .left_shift = 0,
- },
- [ID_AD5781] = {
- .bits = 18,
- .left_shift = 2,
- },
-};
-
static int ad5791_get_lin_comp(unsigned int span)
{
if (span <= 10000)
@@ -267,6 +256,37 @@ static int ad5791_get_lin_comp(unsigned int span)
return AD5791_LINCOMP_19_20;
}
+static int ad5780_get_lin_comp(unsigned int span)
+{
+ if (span <= 10000)
+ return AD5780_LINCOMP_0_10;
+ else
+ return AD5780_LINCOMP_10_20;
+}
+
+static const struct ad5791_chip_info ad5791_chip_info_tbl[] = {
+ [ID_AD5760] = {
+ .bits = 16,
+ .left_shift = 4,
+ .get_lin_comp = ad5780_get_lin_comp,
+ },
+ [ID_AD5780] = {
+ .bits = 18,
+ .left_shift = 2,
+ .get_lin_comp = ad5780_get_lin_comp,
+ },
+ [ID_AD5781] = {
+ .bits = 18,
+ .left_shift = 2,
+ .get_lin_comp = ad5791_get_lin_comp,
+ },
+ [ID_AD5791] = {
+ .bits = 20,
+ .left_shift = 0,
+ .get_lin_comp = ad5791_get_lin_comp,
+ },
+};
+
static int __devinit ad5791_probe(struct spi_device *spi)
{
struct ad5791_platform_data *pdata = spi->dev.platform_data;
@@ -314,8 +334,8 @@ static int __devinit ad5791_probe(struct spi_device *spi)
&ad5791_chip_info_tbl[spi_get_device_id(spi)->driver_data];
- st->ctrl = AD5761_CTRL_LINCOMP(ad5791_get_lin_comp(st->vref_mv)) |
- ((pdata && pdata->use_rbuf_gain2) ? 0 : AD5791_CTRL_RBUF) |
+ st->ctrl = AD5761_CTRL_LINCOMP(st->chip_info->get_lin_comp(st->vref_mv))
+ | ((pdata && pdata->use_rbuf_gain2) ? 0 : AD5791_CTRL_RBUF) |
AD5791_CTRL_BIN2SC;
ret = ad5791_spi_write(spi, AD5791_ADDR_CTRL, st->ctrl |
@@ -386,8 +406,10 @@ static int __devexit ad5791_remove(struct spi_device *spi)
}
static const struct spi_device_id ad5791_id[] = {
- {"ad5791", ID_AD5791},
+ {"ad5760", ID_AD5760},
+ {"ad5780", ID_AD5780},
{"ad5781", ID_AD5781},
+ {"ad5791", ID_AD5791},
{}
};
@@ -414,5 +436,5 @@ static __exit void ad5791_spi_exit(void)
module_exit(ad5791_spi_exit);
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Analog Devices AD5791/AD5781 DAC");
+MODULE_DESCRIPTION("Analog Devices AD5760/AD5780/AD5781/AD5791 DAC");
MODULE_LICENSE("GPL v2");