The ADMV1014 is a silicon germanium (SiGe), wideband,
microwave downconverter optimized for point to point microwave
radio designs operating in the 24 GHz to 44 GHz frequency range.
Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADMV1014.pdf
Signed-off-by: Antoniu Miclaus <[email protected]>
---
changes in v3:
- add line breaks where needed
- expose IIO channels/attributes based on the input mode
- remove comma after null terminator
- make VCC_X regulators optional and remove value checks
- use only unlocked versions of spi read/write inside init function
- move powerdown action to init function
drivers/iio/frequency/Kconfig | 10 +
drivers/iio/frequency/Makefile | 1 +
drivers/iio/frequency/admv1014.c | 950 +++++++++++++++++++++++++++++++
3 files changed, 961 insertions(+)
create mode 100644 drivers/iio/frequency/admv1014.c
diff --git a/drivers/iio/frequency/Kconfig b/drivers/iio/frequency/Kconfig
index 2c9e0559e8a4..493221f42077 100644
--- a/drivers/iio/frequency/Kconfig
+++ b/drivers/iio/frequency/Kconfig
@@ -50,6 +50,16 @@ config ADF4371
To compile this driver as a module, choose M here: the
module will be called adf4371.
+config ADMV1014
+ tristate "Analog Devices ADMV1014 Microwave Downconverter"
+ depends on SPI && COMMON_CLK && 64BIT
+ help
+ Say yes here to build support for Analog Devices ADMV1014
+ 24 GHz to 44 GHz, Wideband, Microwave Downconverter.
+
+ To compile this driver as a module, choose M here: the
+ module will be called admv1014.
+
config ADRF6780
tristate "Analog Devices ADRF6780 Microwave Upconverter"
depends on SPI
diff --git a/drivers/iio/frequency/Makefile b/drivers/iio/frequency/Makefile
index ae3136c79202..5f0348e5eb53 100644
--- a/drivers/iio/frequency/Makefile
+++ b/drivers/iio/frequency/Makefile
@@ -7,4 +7,5 @@
obj-$(CONFIG_AD9523) += ad9523.o
obj-$(CONFIG_ADF4350) += adf4350.o
obj-$(CONFIG_ADF4371) += adf4371.o
+obj-$(CONFIG_ADMV1014) += admv1014.o
obj-$(CONFIG_ADRF6780) += adrf6780.o
diff --git a/drivers/iio/frequency/admv1014.c b/drivers/iio/frequency/admv1014.c
new file mode 100644
index 000000000000..667e5fade425
--- /dev/null
+++ b/drivers/iio/frequency/admv1014.c
@@ -0,0 +1,950 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADMV1014 driver
+ *
+ * Copyright 2022 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/notifier.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+/* ADMV1014 Register Map */
+#define ADMV1014_REG_SPI_CONTROL 0x00
+#define ADMV1014_REG_ALARM 0x01
+#define ADMV1014_REG_ALARM_MASKS 0x02
+#define ADMV1014_REG_ENABLE 0x03
+#define ADMV1014_REG_QUAD 0x04
+#define ADMV1014_REG_LO_AMP_PHASE_ADJUST1 0x05
+#define ADMV1014_REG_MIXER 0x07
+#define ADMV1014_REG_IF_AMP 0x08
+#define ADMV1014_REG_IF_AMP_BB_AMP 0x09
+#define ADMV1014_REG_BB_AMP_AGC 0x0A
+#define ADMV1014_REG_VVA_TEMP_COMP 0x0B
+
+/* ADMV1014_REG_SPI_CONTROL Map */
+#define ADMV1014_PARITY_EN_MSK BIT(15)
+#define ADMV1014_SPI_SOFT_RESET_MSK BIT(14)
+#define ADMV1014_CHIP_ID_MSK GENMASK(11, 4)
+#define ADMV1014_CHIP_ID 0x9
+#define ADMV1014_REVISION_ID_MSK GENMASK(3, 0)
+
+/* ADMV1014_REG_ALARM Map */
+#define ADMV1014_PARITY_ERROR_MSK BIT(15)
+#define ADMV1014_TOO_FEW_ERRORS_MSK BIT(14)
+#define ADMV1014_TOO_MANY_ERRORS_MSK BIT(13)
+#define ADMV1014_ADDRESS_RANGE_ERROR_MSK BIT(12)
+
+/* ADMV1014_REG_ENABLE Map */
+#define ADMV1014_IBIAS_PD_MSK BIT(14)
+#define ADMV1014_P1DB_COMPENSATION_MSK GENMASK(13, 12)
+#define ADMV1014_IF_AMP_PD_MSK BIT(11)
+#define ADMV1014_QUAD_BG_PD_MSK BIT(9)
+#define ADMV1014_BB_AMP_PD_MSK BIT(8)
+#define ADMV1014_QUAD_IBIAS_PD_MSK BIT(7)
+#define ADMV1014_DET_EN_MSK BIT(6)
+#define ADMV1014_BG_PD_MSK BIT(5)
+
+/* ADMV1014_REG_QUAD Map */
+#define ADMV1014_QUAD_SE_MODE_MSK GENMASK(9, 6)
+#define ADMV1014_QUAD_FILTERS_MSK GENMASK(3, 0)
+
+/* ADMV1014_REG_LO_AMP_PHASE_ADJUST1 Map */
+#define ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK GENMASK(15, 9)
+#define ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK GENMASK(8, 2)
+
+/* ADMV1014_REG_MIXER Map */
+#define ADMV1014_MIXER_VGATE_MSK GENMASK(15, 9)
+#define ADMV1014_DET_PROG_MSK GENMASK(6, 0)
+
+/* ADMV1014_REG_IF_AMP Map */
+#define ADMV1014_IF_AMP_COARSE_GAIN_I_MSK GENMASK(11, 8)
+#define ADMV1014_IF_AMP_FINE_GAIN_Q_MSK GENMASK(7, 4)
+#define ADMV1014_IF_AMP_FINE_GAIN_I_MSK GENMASK(3, 0)
+
+/* ADMV1014_REG_IF_AMP_BB_AMP Map */
+#define ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK GENMASK(15, 12)
+#define ADMV1014_BB_AMP_OFFSET_Q_MSK GENMASK(9, 5)
+#define ADMV1014_BB_AMP_OFFSET_I_MSK GENMASK(4, 0)
+
+/* ADMV1014_REG_BB_AMP_AGC Map */
+#define ADMV1014_BB_AMP_REF_GEN_MSK GENMASK(6, 3)
+#define ADMV1014_BB_AMP_GAIN_CTRL_MSK GENMASK(2, 1)
+#define ADMV1014_BB_SWITCH_HIGH_LOW_CM_MSK BIT(0)
+
+/* ADMV1014_REG_VVA_TEMP_COMP Map */
+#define ADMV1014_VVA_TEMP_COMP_MSK GENMASK(15, 0)
+
+/* ADMV1014 Miscellaneous Defines */
+#define ADMV1014_READ BIT(7)
+#define ADMV1014_REG_ADDR_READ_MSK GENMASK(6, 1)
+#define ADMV1014_REG_ADDR_WRITE_MSK GENMASK(22, 17)
+#define ADMV1014_REG_DATA_MSK GENMASK(16, 1)
+
+enum {
+ ADMV1014_IQ_MODE,
+ ADMV1014_IF_MODE
+};
+
+enum {
+ ADMV1014_SE_MODE_POS = 6,
+ ADMV1014_SE_MODE_NEG = 9,
+ ADMV1014_SE_MODE_DIFF = 12
+};
+
+enum {
+ ADMV1014_CALIBSCALE_COARSE,
+ ADMV1014_CALIBSCALE_FINE,
+};
+
+static const int detector_table[] = {0, 1, 2, 4, 8, 16, 32, 64};
+
+struct admv1014_state {
+ struct spi_device *spi;
+ struct clk *clkin;
+ struct notifier_block nb;
+ /* Protect against concurrent accesses to the device and to data*/
+ struct mutex lock;
+ struct regulator *vcm_reg;
+ struct regulator *vcc_if_bb_reg;
+ struct regulator *vcc_vga_reg;
+ struct regulator *vcc_vva_reg;
+ struct regulator *vcc_lna_3p3_reg;
+ struct regulator *vcc_lna_1p5_reg;
+ struct regulator *vcc_bg_reg;
+ struct regulator *vcc_quad_reg;
+ struct regulator *vcc_mixer_reg;
+ unsigned int input_mode;
+ unsigned int quad_se_mode;
+ unsigned int p1db_comp;
+ bool det_en;
+ u8 data[3] ____cacheline_aligned;
+};
+
+static const int mixer_vgate_table[] = {106, 107, 108, 110, 111, 112, 113, 114,
+ 117, 118, 119, 120, 122, 123, 44, 45};
+
+static int __admv1014_spi_read(struct admv1014_state *st, unsigned int reg,
+ unsigned int *val)
+{
+ int ret;
+ struct spi_transfer t = {0};
+
+ st->data[0] = ADMV1014_READ | FIELD_PREP(ADMV1014_REG_ADDR_READ_MSK, reg);
+ st->data[1] = 0x0;
+ st->data[2] = 0x0;
+
+ t.rx_buf = &st->data[0];
+ t.tx_buf = &st->data[0];
+ t.len = 3;
+
+ ret = spi_sync_transfer(st->spi, &t, 1);
+ if (ret)
+ return ret;
+
+ *val = FIELD_GET(ADMV1014_REG_DATA_MSK, get_unaligned_be24(&st->data[0]));
+
+ return ret;
+}
+
+static int admv1014_spi_read(struct admv1014_state *st, unsigned int reg,
+ unsigned int *val)
+{
+ int ret;
+
+ mutex_lock(&st->lock);
+ ret = __admv1014_spi_read(st, reg, val);
+ mutex_unlock(&st->lock);
+
+ return ret;
+}
+
+static int __admv1014_spi_write(struct admv1014_state *st,
+ unsigned int reg,
+ unsigned int val)
+{
+ put_unaligned_be24(FIELD_PREP(ADMV1014_REG_DATA_MSK, val) |
+ FIELD_PREP(ADMV1014_REG_ADDR_WRITE_MSK, reg), &st->data[0]);
+
+ return spi_write(st->spi, &st->data[0], 3);
+}
+
+static int admv1014_spi_write(struct admv1014_state *st, unsigned int reg,
+ unsigned int val)
+{
+ int ret;
+
+ mutex_lock(&st->lock);
+ ret = __admv1014_spi_write(st, reg, val);
+ mutex_unlock(&st->lock);
+
+ return ret;
+}
+
+static int __admv1014_spi_update_bits(struct admv1014_state *st, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ int ret;
+ unsigned int data, temp;
+
+ ret = __admv1014_spi_read(st, reg, &data);
+ if (ret)
+ return ret;
+
+ temp = (data & ~mask) | (val & mask);
+
+ return __admv1014_spi_write(st, reg, temp);
+}
+
+static int admv1014_spi_update_bits(struct admv1014_state *st, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ int ret;
+
+ mutex_lock(&st->lock);
+ ret = __admv1014_spi_update_bits(st, reg, mask, val);
+ mutex_unlock(&st->lock);
+
+ return ret;
+}
+
+static int admv1014_update_quad_filters(struct admv1014_state *st)
+{
+ unsigned int filt_raw;
+ u64 rate = clk_get_rate(st->clkin);
+
+ if (rate >= (5400 * HZ_PER_MHZ) && rate <= (7000 * HZ_PER_MHZ))
+ filt_raw = 15;
+ else if (rate >= (5400 * HZ_PER_MHZ) && rate <= (8000 * HZ_PER_MHZ))
+ filt_raw = 10;
+ else if (rate >= (6600 * HZ_PER_MHZ) && rate <= (9200 * HZ_PER_MHZ))
+ filt_raw = 5;
+ else
+ filt_raw = 0;
+
+ return __admv1014_spi_update_bits(st, ADMV1014_REG_QUAD,
+ ADMV1014_QUAD_FILTERS_MSK,
+ FIELD_PREP(ADMV1014_QUAD_FILTERS_MSK, filt_raw));
+}
+
+static int admv1014_update_vcm_settings(struct admv1014_state *st)
+{
+ unsigned int i, vcm_mv, vcm_comp, bb_sw_hl_cm;
+ int ret;
+
+ vcm_mv = regulator_get_voltage(st->vcm_reg) / 1000;
+ for (i = 0; i < ARRAY_SIZE(mixer_vgate_table); i++) {
+ vcm_comp = 1050 + (i * 50) + (i / 8 * 50);
+ if (vcm_mv != vcm_comp)
+ continue;
+
+ ret = __admv1014_spi_update_bits(st, ADMV1014_REG_MIXER,
+ ADMV1014_MIXER_VGATE_MSK,
+ FIELD_PREP(ADMV1014_MIXER_VGATE_MSK,
+ mixer_vgate_table[i]));
+ if (ret)
+ return ret;
+
+ bb_sw_hl_cm = ~(i / 8);
+ bb_sw_hl_cm = FIELD_PREP(ADMV1014_BB_SWITCH_HIGH_LOW_CM_MSK, bb_sw_hl_cm);
+
+ return __admv1014_spi_update_bits(st, ADMV1014_REG_BB_AMP_AGC,
+ ADMV1014_BB_AMP_REF_GEN_MSK |
+ ADMV1014_BB_SWITCH_HIGH_LOW_CM_MSK,
+ FIELD_PREP(ADMV1014_BB_AMP_REF_GEN_MSK, i) |
+ bb_sw_hl_cm);
+ }
+
+ return -EINVAL;
+}
+
+static int admv1014_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long info)
+{
+ struct admv1014_state *st = iio_priv(indio_dev);
+ unsigned int data;
+ int ret;
+
+ switch (info) {
+ case IIO_CHAN_INFO_OFFSET:
+ ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP_BB_AMP, &data);
+ if (ret)
+ return ret;
+
+ if (chan->channel2 == IIO_MOD_I)
+ *val = FIELD_GET(ADMV1014_BB_AMP_OFFSET_I_MSK, data);
+ else
+ *val = FIELD_GET(ADMV1014_BB_AMP_OFFSET_Q_MSK, data);
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_PHASE:
+ ret = admv1014_spi_read(st, ADMV1014_REG_LO_AMP_PHASE_ADJUST1, &data);
+ if (ret)
+ return ret;
+
+ if (chan->channel2 == IIO_MOD_I)
+ *val = FIELD_GET(ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK, data);
+ else
+ *val = FIELD_GET(ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK, data);
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SCALE:
+ ret = admv1014_spi_read(st, ADMV1014_REG_MIXER, &data);
+ if (ret)
+ return ret;
+
+ *val = FIELD_GET(ADMV1014_DET_PROG_MSK, data);
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_CALIBSCALE:
+ ret = admv1014_spi_read(st, ADMV1014_REG_BB_AMP_AGC, &data);
+ if (ret)
+ return ret;
+
+ *val = FIELD_GET(ADMV1014_BB_AMP_GAIN_CTRL_MSK, data);
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int admv1014_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long info)
+{
+ int data;
+ unsigned int msk;
+ struct admv1014_state *st = iio_priv(indio_dev);
+
+ switch (info) {
+ case IIO_CHAN_INFO_OFFSET:
+ if (chan->channel2 == IIO_MOD_I) {
+ msk = ADMV1014_BB_AMP_OFFSET_I_MSK;
+ data = FIELD_PREP(ADMV1014_BB_AMP_OFFSET_I_MSK, val);
+ } else {
+ msk = ADMV1014_BB_AMP_OFFSET_Q_MSK;
+ data = FIELD_PREP(ADMV1014_BB_AMP_OFFSET_Q_MSK, val);
+ }
+
+ return admv1014_spi_update_bits(st, ADMV1014_REG_IF_AMP_BB_AMP, msk, data);
+ case IIO_CHAN_INFO_PHASE:
+ if (chan->channel2 == IIO_MOD_I) {
+ msk = ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK;
+ data = FIELD_PREP(ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK, val);
+ } else {
+ msk = ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK;
+ data = FIELD_PREP(ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK, val);
+ }
+
+ return admv1014_spi_update_bits(st, ADMV1014_REG_LO_AMP_PHASE_ADJUST1, msk, data);
+ case IIO_CHAN_INFO_SCALE:
+ return admv1014_spi_update_bits(st, ADMV1014_REG_MIXER,
+ ADMV1014_DET_PROG_MSK,
+ FIELD_PREP(ADMV1014_DET_PROG_MSK, val));
+ case IIO_CHAN_INFO_CALIBSCALE:
+ return admv1014_spi_update_bits(st, ADMV1014_REG_BB_AMP_AGC,
+ ADMV1014_BB_AMP_GAIN_CTRL_MSK,
+ FIELD_PREP(ADMV1014_BB_AMP_GAIN_CTRL_MSK, val));
+ default:
+ return -EINVAL;
+ }
+}
+
+static ssize_t admv1014_read(struct iio_dev *indio_dev,
+ uintptr_t private,
+ const struct iio_chan_spec *chan,
+ char *buf)
+{
+ struct admv1014_state *st = iio_priv(indio_dev);
+ unsigned int data;
+ int ret;
+
+ switch ((u32)private) {
+ case ADMV1014_CALIBSCALE_COARSE:
+ if (chan->channel2 == IIO_MOD_I) {
+ ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP, &data);
+ if (ret)
+ return ret;
+
+ data = FIELD_GET(ADMV1014_IF_AMP_COARSE_GAIN_I_MSK, data);
+ } else {
+ ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP_BB_AMP, &data);
+ if (ret)
+ return ret;
+
+ data = FIELD_GET(ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK, data);
+ }
+ break;
+ case ADMV1014_CALIBSCALE_FINE:
+ ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP, &data);
+ if (ret)
+ return ret;
+
+ if (chan->channel2 == IIO_MOD_I)
+ data = FIELD_GET(ADMV1014_IF_AMP_FINE_GAIN_I_MSK, data);
+ else
+ data = FIELD_GET(ADMV1014_IF_AMP_FINE_GAIN_Q_MSK, data);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return sysfs_emit(buf, "%u\n", data);
+}
+
+static ssize_t admv1014_write(struct iio_dev *indio_dev,
+ uintptr_t private,
+ const struct iio_chan_spec *chan,
+ const char *buf, size_t len)
+{
+ struct admv1014_state *st = iio_priv(indio_dev);
+ unsigned int data, addr, msk;
+ int ret;
+
+ ret = kstrtou32(buf, 10, &data);
+ if (ret)
+ return ret;
+
+ switch ((u32)private) {
+ case ADMV1014_CALIBSCALE_COARSE:
+ if (chan->channel2 == IIO_MOD_I) {
+ addr = ADMV1014_REG_IF_AMP;
+ msk = ADMV1014_IF_AMP_COARSE_GAIN_I_MSK;
+ data = FIELD_PREP(ADMV1014_IF_AMP_COARSE_GAIN_I_MSK, data);
+ } else {
+ addr = ADMV1014_REG_IF_AMP_BB_AMP;
+ msk = ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK;
+ data = FIELD_PREP(ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK, data);
+ }
+ break;
+ case ADMV1014_CALIBSCALE_FINE:
+ addr = ADMV1014_REG_IF_AMP;
+
+ if (chan->channel2 == IIO_MOD_I) {
+ msk = ADMV1014_IF_AMP_FINE_GAIN_I_MSK;
+ data = FIELD_PREP(ADMV1014_IF_AMP_FINE_GAIN_I_MSK, data);
+ } else {
+ msk = ADMV1014_IF_AMP_FINE_GAIN_Q_MSK;
+ data = FIELD_PREP(ADMV1014_IF_AMP_FINE_GAIN_Q_MSK, data);
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = admv1014_spi_update_bits(st, addr, msk, data);
+
+ return ret ? ret : len;
+}
+
+static int admv1014_read_avail(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length,
+ long info)
+{
+ switch (info) {
+ case IIO_CHAN_INFO_SCALE:
+ *vals = detector_table;
+ *type = IIO_VAL_INT;
+ *length = ARRAY_SIZE(detector_table);
+
+ return IIO_AVAIL_LIST;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int admv1014_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg,
+ unsigned int write_val,
+ unsigned int *read_val)
+{
+ struct admv1014_state *st = iio_priv(indio_dev);
+
+ if (read_val)
+ return admv1014_spi_read(st, reg, read_val);
+ else
+ return admv1014_spi_write(st, reg, write_val);
+}
+
+static const struct iio_info admv1014_info = {
+ .read_raw = admv1014_read_raw,
+ .write_raw = admv1014_write_raw,
+ .read_avail = &admv1014_read_avail,
+ .debugfs_reg_access = &admv1014_reg_access,
+};
+
+static int admv1014_freq_change(struct notifier_block *nb, unsigned long action, void *data)
+{
+ struct admv1014_state *st = container_of(nb, struct admv1014_state, nb);
+ int ret;
+
+ if (action == POST_RATE_CHANGE) {
+ mutex_lock(&st->lock);
+ ret = notifier_from_errno(admv1014_update_quad_filters(st));
+ mutex_unlock(&st->lock);
+ return ret;
+ }
+
+ return NOTIFY_OK;
+}
+
+#define _ADMV1014_EXT_INFO(_name, _shared, _ident) { \
+ .name = _name, \
+ .read = admv1014_read, \
+ .write = admv1014_write, \
+ .private = _ident, \
+ .shared = _shared, \
+}
+
+static const struct iio_chan_spec_ext_info admv1014_ext_info[] = {
+ _ADMV1014_EXT_INFO("calibscale_coarse", IIO_SEPARATE, ADMV1014_CALIBSCALE_COARSE),
+ _ADMV1014_EXT_INFO("calibscale_fine", IIO_SEPARATE, ADMV1014_CALIBSCALE_FINE),
+ { }
+};
+
+#define ADMV1014_CHAN_IQ(_channel, rf_comp) { \
+ .type = IIO_ALTVOLTAGE, \
+ .modified = 1, \
+ .output = 0, \
+ .indexed = 1, \
+ .channel2 = IIO_MOD_##rf_comp, \
+ .channel = _channel, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PHASE) | \
+ BIT(IIO_CHAN_INFO_OFFSET), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBSCALE) \
+ }
+
+#define ADMV1014_CHAN_IF(_channel, rf_comp) { \
+ .type = IIO_ALTVOLTAGE, \
+ .modified = 1, \
+ .output = 0, \
+ .indexed = 1, \
+ .channel2 = IIO_MOD_##rf_comp, \
+ .channel = _channel, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PHASE) | \
+ BIT(IIO_CHAN_INFO_OFFSET) \
+ }
+
+#define ADMV1014_CHAN_POWER(_channel) { \
+ .type = IIO_POWER, \
+ .output = 0, \
+ .indexed = 1, \
+ .channel = _channel, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_SCALE), \
+ .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE) \
+ }
+
+#define ADMV1014_CHAN_CALIBSCALE(_channel, rf_comp, _admv1014_ext_info) { \
+ .type = IIO_ALTVOLTAGE, \
+ .modified = 1, \
+ .output = 0, \
+ .indexed = 1, \
+ .channel2 = IIO_MOD_##rf_comp, \
+ .channel = _channel, \
+ .ext_info = _admv1014_ext_info \
+ }
+
+static const struct iio_chan_spec admv1014_channels_iq[] = {
+ ADMV1014_CHAN_IQ(0, I),
+ ADMV1014_CHAN_IQ(0, Q),
+ ADMV1014_CHAN_POWER(0)
+};
+
+static const struct iio_chan_spec admv1014_channels_if[] = {
+ ADMV1014_CHAN_IF(0, I),
+ ADMV1014_CHAN_IF(0, Q),
+ ADMV1014_CHAN_CALIBSCALE(0, I, admv1014_ext_info),
+ ADMV1014_CHAN_CALIBSCALE(0, Q, admv1014_ext_info),
+ ADMV1014_CHAN_POWER(0)
+};
+
+static void admv1014_clk_disable(void *data)
+{
+ clk_disable_unprepare(data);
+}
+
+static void admv1014_reg_disable(void *data)
+{
+ regulator_disable(data);
+}
+
+static void admv1014_powerdown(void *data)
+{
+ unsigned int enable_reg, enable_reg_msk;
+
+ /* Disable all components in the Enable Register */
+ enable_reg_msk = ADMV1014_IBIAS_PD_MSK |
+ ADMV1014_IF_AMP_PD_MSK |
+ ADMV1014_QUAD_BG_PD_MSK |
+ ADMV1014_BB_AMP_PD_MSK |
+ ADMV1014_QUAD_IBIAS_PD_MSK |
+ ADMV1014_BG_PD_MSK;
+
+ enable_reg = FIELD_PREP(ADMV1014_IBIAS_PD_MSK, 1) |
+ FIELD_PREP(ADMV1014_IF_AMP_PD_MSK, 1) |
+ FIELD_PREP(ADMV1014_QUAD_BG_PD_MSK, 1) |
+ FIELD_PREP(ADMV1014_BB_AMP_PD_MSK, 1) |
+ FIELD_PREP(ADMV1014_QUAD_IBIAS_PD_MSK, 1) |
+ FIELD_PREP(ADMV1014_BG_PD_MSK, 1);
+
+ admv1014_spi_update_bits(data, ADMV1014_REG_ENABLE,
+ enable_reg_msk, enable_reg);
+}
+
+static int admv1014_init(struct admv1014_state *st)
+{
+ int ret;
+ unsigned int chip_id, enable_reg, enable_reg_msk;
+ struct spi_device *spi = st->spi;
+
+ ret = regulator_enable(st->vcm_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable Common-Mode Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcm_reg);
+ if (ret)
+ return ret;
+
+ if (st->vcc_if_bb_reg) {
+ ret = regulator_enable(st->vcc_if_bb_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable BB and IF Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_if_bb_reg);
+ if (ret)
+ return ret;
+ }
+
+ if (st->vcc_vga_reg) {
+ ret = regulator_enable(st->vcc_vga_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable RF Amplifier Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_vga_reg);
+ if (ret)
+ return ret;
+ }
+
+ if (st->vcc_vva_reg) {
+ ret = regulator_enable(st->vcc_vva_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable VVA Control Circuit Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_vva_reg);
+ if (ret)
+ return ret;
+ }
+
+ if (st->vcc_lna_3p3_reg) {
+ ret = regulator_enable(st->vcc_lna_3p3_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable Low Noise Amplifier 3.3V Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_lna_3p3_reg);
+ if (ret)
+ return ret;
+ }
+
+ if (st->vcc_lna_1p5_reg) {
+ ret = regulator_enable(st->vcc_lna_1p5_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable Low Noise Amplifier 1.5V Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_lna_1p5_reg);
+ if (ret)
+ return ret;
+ }
+
+ if (st->vcc_bg_reg) {
+ ret = regulator_enable(st->vcc_bg_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable Band Gap Circuit Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_bg_reg);
+ if (ret)
+ return ret;
+ }
+
+ if (st->vcc_quad_reg) {
+ ret = regulator_enable(st->vcc_quad_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable Quadruple Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_quad_reg);
+ if (ret)
+ return ret;
+ }
+
+ if (st->vcc_mixer_reg) {
+ ret = regulator_enable(st->vcc_mixer_reg);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable Mixer Voltage!\n");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_mixer_reg);
+ if (ret)
+ return ret;
+ }
+
+ ret = clk_prepare_enable(st->clkin);
+ if (ret)
+ return ret;
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_clk_disable, st->clkin);
+ if (ret)
+ return ret;
+
+ st->nb.notifier_call = admv1014_freq_change;
+ ret = devm_clk_notifier_register(&spi->dev, st->clkin, &st->nb);
+ if (ret)
+ return ret;
+
+ ret = devm_add_action_or_reset(&spi->dev, admv1014_powerdown, st);
+ if (ret)
+ return ret;
+
+ /* Perform a software reset */
+ ret = __admv1014_spi_update_bits(st, ADMV1014_REG_SPI_CONTROL,
+ ADMV1014_SPI_SOFT_RESET_MSK,
+ FIELD_PREP(ADMV1014_SPI_SOFT_RESET_MSK, 1));
+ if (ret) {
+ dev_err(&spi->dev, "ADMV1014 SPI software reset failed.\n");
+ return ret;
+ }
+
+ ret = __admv1014_spi_update_bits(st, ADMV1014_REG_SPI_CONTROL,
+ ADMV1014_SPI_SOFT_RESET_MSK,
+ FIELD_PREP(ADMV1014_SPI_SOFT_RESET_MSK, 0));
+ if (ret) {
+ dev_err(&spi->dev, "ADMV1014 SPI software reset disable failed.\n");
+ return ret;
+ }
+
+ ret = __admv1014_spi_write(st, ADMV1014_REG_VVA_TEMP_COMP, 0x727C);
+ if (ret) {
+ dev_err(&spi->dev, "Writing default Temperature Compensation value failed.\n");
+ return ret;
+ }
+
+ ret = __admv1014_spi_read(st, ADMV1014_REG_SPI_CONTROL, &chip_id);
+ if (ret)
+ return ret;
+
+ chip_id = (chip_id & ADMV1014_CHIP_ID_MSK) >> 4;
+ if (chip_id != ADMV1014_CHIP_ID) {
+ dev_err(&spi->dev, "Invalid Chip ID.\n");
+ return -EINVAL;
+ }
+
+ ret = __admv1014_spi_update_bits(st, ADMV1014_REG_QUAD,
+ ADMV1014_QUAD_SE_MODE_MSK,
+ FIELD_PREP(ADMV1014_QUAD_SE_MODE_MSK,
+ st->quad_se_mode));
+ if (ret) {
+ dev_err(&spi->dev, "Writing Quad SE Mode failed.\n");
+ return ret;
+ }
+
+ ret = admv1014_update_quad_filters(st);
+ if (ret) {
+ dev_err(&spi->dev, "Update Quad Filters failed.\n");
+ return ret;
+ }
+
+ ret = admv1014_update_vcm_settings(st);
+ if (ret) {
+ dev_err(&spi->dev, "Update VCM Settings failed.\n");
+ return ret;
+ }
+
+ enable_reg_msk = ADMV1014_P1DB_COMPENSATION_MSK |
+ ADMV1014_IF_AMP_PD_MSK |
+ ADMV1014_BB_AMP_PD_MSK |
+ ADMV1014_DET_EN_MSK;
+
+ enable_reg = FIELD_PREP(ADMV1014_P1DB_COMPENSATION_MSK, st->p1db_comp ? 3 : 0) |
+ FIELD_PREP(ADMV1014_IF_AMP_PD_MSK, !(st->input_mode)) |
+ FIELD_PREP(ADMV1014_BB_AMP_PD_MSK, st->input_mode) |
+ FIELD_PREP(ADMV1014_DET_EN_MSK, st->det_en);
+
+ return __admv1014_spi_update_bits(st, ADMV1014_REG_ENABLE, enable_reg_msk, enable_reg);
+}
+
+static int admv1014_properties_parse(struct admv1014_state *st)
+{
+ const char *str;
+ struct spi_device *spi = st->spi;
+
+ st->det_en = device_property_read_bool(&spi->dev, "adi,detector-enable");
+
+ st->p1db_comp = device_property_read_bool(&spi->dev, "adi,p1db-compensation-enable");
+
+ str = "iq";
+ device_property_read_string(&spi->dev, "adi,input-mode", &str);
+
+ if (!strcmp(str, "iq"))
+ st->input_mode = ADMV1014_IQ_MODE;
+ else if (!strcmp(str, "if"))
+ st->input_mode = ADMV1014_IF_MODE;
+ else
+ return -EINVAL;
+
+ str = "diff";
+ device_property_read_string(&spi->dev, "adi,quad-se-mode", &str);
+
+ if (!strcmp(str, "diff"))
+ st->quad_se_mode = ADMV1014_SE_MODE_DIFF;
+ else if (!strcmp(str, "se-pos"))
+ st->quad_se_mode = ADMV1014_SE_MODE_POS;
+ else if (!strcmp(str, "se-neg"))
+ st->quad_se_mode = ADMV1014_SE_MODE_NEG;
+ else
+ return -EINVAL;
+
+ st->vcm_reg = devm_regulator_get(&spi->dev, "vcm");
+ if (IS_ERR(st->vcm_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcm_reg),
+ "failed to get the common-mode voltage\n");
+
+ st->vcc_if_bb_reg = devm_regulator_get_optional(&spi->dev, "vcc-if-bb");
+ if (IS_ERR(st->vcc_if_bb_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_if_bb_reg),
+ "failed to get the BB and IF supply\n");
+
+ st->vcc_vga_reg = devm_regulator_get_optional(&spi->dev, "vcc-vga");
+ if (IS_ERR(st->vcc_vga_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_vga_reg),
+ "failed to get the RF Amplifier supply\n");
+
+ st->vcc_vva_reg = devm_regulator_get_optional(&spi->dev, "vcc-vva");
+ if (IS_ERR(st->vcc_vva_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_vva_reg),
+ "failed to get the VVA Control Circuit supply\n");
+
+ st->vcc_lna_3p3_reg = devm_regulator_get_optional(&spi->dev, "vcc-lna-3p3");
+ if (IS_ERR(st->vcc_lna_3p3_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_lna_3p3_reg),
+ "failed to get the Low Noise Amplifier 3.3V supply\n");
+
+ st->vcc_lna_1p5_reg = devm_regulator_get_optional(&spi->dev, "vcc-lna-1p5");
+ if (IS_ERR(st->vcc_lna_1p5_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_lna_1p5_reg),
+ "failed to get the Low Noise Amplifier 1.5V supply\n");
+
+ st->vcc_bg_reg = devm_regulator_get_optional(&spi->dev, "vcc-bg");
+ if (IS_ERR(st->vcc_lna_1p5_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_bg_reg),
+ "failed to get the Band Gap Circuit supply\n");
+
+ st->vcc_quad_reg = devm_regulator_get_optional(&spi->dev, "vcc-quad");
+ if (IS_ERR(st->vcc_quad_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_quad_reg),
+ "failed to get the Quadruple supply\n");
+
+ st->vcc_mixer_reg = devm_regulator_get_optional(&spi->dev, "vcc-mixer");
+ if (IS_ERR(st->vcc_quad_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_mixer_reg),
+ "failed to get the Mixer supply\n");
+
+ st->clkin = devm_clk_get(&spi->dev, "lo_in");
+ if (IS_ERR(st->clkin))
+ return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
+ "failed to get the LO input clock\n");
+
+ return 0;
+}
+
+static int admv1014_probe(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev;
+ struct admv1014_state *st;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ st = iio_priv(indio_dev);
+
+ ret = admv1014_properties_parse(st);
+ if (ret)
+ return ret;
+
+ indio_dev->info = &admv1014_info;
+ indio_dev->name = "admv1014";
+
+ if (st->input_mode == ADMV1014_IQ_MODE) {
+ indio_dev->channels = admv1014_channels_iq;
+ indio_dev->num_channels = ARRAY_SIZE(admv1014_channels_iq);
+ } else {
+ indio_dev->channels = admv1014_channels_if;
+ indio_dev->num_channels = ARRAY_SIZE(admv1014_channels_if);
+ }
+
+ st->spi = spi;
+
+ mutex_init(&st->lock);
+
+ ret = admv1014_init(st);
+ if (ret)
+ return ret;
+
+ return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id admv1014_id[] = {
+ { "admv1014", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(spi, admv1014_id);
+
+static const struct of_device_id admv1014_of_match[] = {
+ { .compatible = "adi,admv1014" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, admv1014_of_match);
+
+static struct spi_driver admv1014_driver = {
+ .driver = {
+ .name = "admv1014",
+ .of_match_table = admv1014_of_match,
+ },
+ .probe = admv1014_probe,
+ .id_table = admv1014_id,
+};
+module_spi_driver(admv1014_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <[email protected]");
+MODULE_DESCRIPTION("Analog Devices ADMV1014");
+MODULE_LICENSE("GPL v2");
--
2.34.1
On Wed, 19 Jan 2022 10:18:35 +0200
Antoniu Miclaus <[email protected]> wrote:
> The ADMV1014 is a silicon germanium (SiGe), wideband,
> microwave downconverter optimized for point to point microwave
> radio designs operating in the 24 GHz to 44 GHz frequency range.
>
> Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADMV1014.pdf
> Signed-off-by: Antoniu Miclaus <[email protected]>
Hi Antoniu,
This looks mostly fine to me, but I think you haven't quite understood
the difference between a required regulator and an optional one.
It's about whether there is power needed on the pin. E.g. sometimes for things
like reference voltages we can use either an external voltage or an
internally generated reference, thus making vref-supply optional.
It's not about whether they 'need' to be specified in DT. The regulator
core has a concept of a dummy regulator which is provided in some
cases when we request a regulator and one is not specified. This
is a simplification to allow for always on supplies without fully describing
them. That fallback is what should be relied on, not optional regulators
unless they really are.
Once you've made most (maybe all?) of the regulators in here non optional
you can use the bulk get / enable regulator calls to cut down on repetition.
Thanks,
Jonathan
...
> +static int admv1014_init(struct admv1014_state *st)
> +{
> + int ret;
> + unsigned int chip_id, enable_reg, enable_reg_msk;
> + struct spi_device *spi = st->spi;
> +
> + ret = regulator_enable(st->vcm_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable Common-Mode Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcm_reg);
> + if (ret)
> + return ret;
> +
> + if (st->vcc_if_bb_reg) {
> + ret = regulator_enable(st->vcc_if_bb_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable BB and IF Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_if_bb_reg);
> + if (ret)
> + return ret;
> + }
> +
> + if (st->vcc_vga_reg) {
I'm fairly sure these should not be optional regs (they may be dummy ones provided by
the regulator subsystem) so we should always enable them.
As below, you should be able to use bulk regulator handling for all of these.
> + ret = regulator_enable(st->vcc_vga_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable RF Amplifier Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_vga_reg);
> + if (ret)
> + return ret;
> + }
> +
> + if (st->vcc_vva_reg) {
> + ret = regulator_enable(st->vcc_vva_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable VVA Control Circuit Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_vva_reg);
> + if (ret)
> + return ret;
> + }
> +
> + if (st->vcc_lna_3p3_reg) {
> + ret = regulator_enable(st->vcc_lna_3p3_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable Low Noise Amplifier 3.3V Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_lna_3p3_reg);
> + if (ret)
> + return ret;
> + }
> +
> + if (st->vcc_lna_1p5_reg) {
> + ret = regulator_enable(st->vcc_lna_1p5_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable Low Noise Amplifier 1.5V Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_lna_1p5_reg);
> + if (ret)
> + return ret;
> + }
> +
> + if (st->vcc_bg_reg) {
> + ret = regulator_enable(st->vcc_bg_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable Band Gap Circuit Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_bg_reg);
> + if (ret)
> + return ret;
> + }
> +
> + if (st->vcc_quad_reg) {
> + ret = regulator_enable(st->vcc_quad_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable Quadruple Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_quad_reg);
> + if (ret)
> + return ret;
> + }
> +
> + if (st->vcc_mixer_reg) {
> + ret = regulator_enable(st->vcc_mixer_reg);
> + if (ret) {
> + dev_err(&spi->dev, "Failed to enable Mixer Voltage!\n");
> + return ret;
> + }
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->vcc_mixer_reg);
> + if (ret)
> + return ret;
> + }
> +
> + ret = clk_prepare_enable(st->clkin);
> + if (ret)
> + return ret;
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_clk_disable, st->clkin);
> + if (ret)
> + return ret;
> +
> + st->nb.notifier_call = admv1014_freq_change;
> + ret = devm_clk_notifier_register(&spi->dev, st->clkin, &st->nb);
> + if (ret)
> + return ret;
> +
> + ret = devm_add_action_or_reset(&spi->dev, admv1014_powerdown, st);
> + if (ret)
> + return ret;
> +
> + /* Perform a software reset */
> + ret = __admv1014_spi_update_bits(st, ADMV1014_REG_SPI_CONTROL,
> + ADMV1014_SPI_SOFT_RESET_MSK,
> + FIELD_PREP(ADMV1014_SPI_SOFT_RESET_MSK, 1));
> + if (ret) {
> + dev_err(&spi->dev, "ADMV1014 SPI software reset failed.\n");
> + return ret;
> + }
> +
> + ret = __admv1014_spi_update_bits(st, ADMV1014_REG_SPI_CONTROL,
> + ADMV1014_SPI_SOFT_RESET_MSK,
> + FIELD_PREP(ADMV1014_SPI_SOFT_RESET_MSK, 0));
> + if (ret) {
> + dev_err(&spi->dev, "ADMV1014 SPI software reset disable failed.\n");
> + return ret;
> + }
> +
> + ret = __admv1014_spi_write(st, ADMV1014_REG_VVA_TEMP_COMP, 0x727C);
> + if (ret) {
> + dev_err(&spi->dev, "Writing default Temperature Compensation value failed.\n");
> + return ret;
> + }
> +
> + ret = __admv1014_spi_read(st, ADMV1014_REG_SPI_CONTROL, &chip_id);
> + if (ret)
> + return ret;
> +
> + chip_id = (chip_id & ADMV1014_CHIP_ID_MSK) >> 4;
> + if (chip_id != ADMV1014_CHIP_ID) {
> + dev_err(&spi->dev, "Invalid Chip ID.\n");
> + return -EINVAL;
> + }
> +
> + ret = __admv1014_spi_update_bits(st, ADMV1014_REG_QUAD,
> + ADMV1014_QUAD_SE_MODE_MSK,
> + FIELD_PREP(ADMV1014_QUAD_SE_MODE_MSK,
> + st->quad_se_mode));
> + if (ret) {
> + dev_err(&spi->dev, "Writing Quad SE Mode failed.\n");
> + return ret;
> + }
> +
> + ret = admv1014_update_quad_filters(st);
> + if (ret) {
> + dev_err(&spi->dev, "Update Quad Filters failed.\n");
> + return ret;
> + }
> +
> + ret = admv1014_update_vcm_settings(st);
> + if (ret) {
> + dev_err(&spi->dev, "Update VCM Settings failed.\n");
> + return ret;
> + }
> +
> + enable_reg_msk = ADMV1014_P1DB_COMPENSATION_MSK |
> + ADMV1014_IF_AMP_PD_MSK |
> + ADMV1014_BB_AMP_PD_MSK |
> + ADMV1014_DET_EN_MSK;
> +
> + enable_reg = FIELD_PREP(ADMV1014_P1DB_COMPENSATION_MSK, st->p1db_comp ? 3 : 0) |
> + FIELD_PREP(ADMV1014_IF_AMP_PD_MSK, !(st->input_mode)) |
> + FIELD_PREP(ADMV1014_BB_AMP_PD_MSK, st->input_mode) |
> + FIELD_PREP(ADMV1014_DET_EN_MSK, st->det_en);
> +
> + return __admv1014_spi_update_bits(st, ADMV1014_REG_ENABLE, enable_reg_msk, enable_reg);
> +}
> +
> +static int admv1014_properties_parse(struct admv1014_state *st)
> +{
> + const char *str;
> + struct spi_device *spi = st->spi;
> +
> + st->det_en = device_property_read_bool(&spi->dev, "adi,detector-enable");
> +
> + st->p1db_comp = device_property_read_bool(&spi->dev, "adi,p1db-compensation-enable");
> +
> + str = "iq";
> + device_property_read_string(&spi->dev, "adi,input-mode", &str);
> +
> + if (!strcmp(str, "iq"))
> + st->input_mode = ADMV1014_IQ_MODE;
> + else if (!strcmp(str, "if"))
> + st->input_mode = ADMV1014_IF_MODE;
> + else
> + return -EINVAL;
> +
> + str = "diff";
> + device_property_read_string(&spi->dev, "adi,quad-se-mode", &str);
> +
> + if (!strcmp(str, "diff"))
> + st->quad_se_mode = ADMV1014_SE_MODE_DIFF;
> + else if (!strcmp(str, "se-pos"))
> + st->quad_se_mode = ADMV1014_SE_MODE_POS;
> + else if (!strcmp(str, "se-neg"))
> + st->quad_se_mode = ADMV1014_SE_MODE_NEG;
> + else
> + return -EINVAL;
> +
> + st->vcm_reg = devm_regulator_get(&spi->dev, "vcm");
> + if (IS_ERR(st->vcm_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcm_reg),
> + "failed to get the common-mode voltage\n");
> +
> + st->vcc_if_bb_reg = devm_regulator_get_optional(&spi->dev, "vcc-if-bb");
Are these actually optional? That means we can operate the device in a mode where
it doesn't matter if there is power on this pin... It doesn't mean we have
to specify them in DT, because they may be always on supplies in which case
a dummy regulator is fine (which is what you get from devm_regulator_get()
under some circumstances when one isn't specified).
Having made those that aren't actually optional, non optional you can probably
use the bulk regulator controls to avoid lots of identical calls.
> + if (IS_ERR(st->vcc_if_bb_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_if_bb_reg),
> + "failed to get the BB and IF supply\n");
> +
> + st->vcc_vga_reg = devm_regulator_get_optional(&spi->dev, "vcc-vga");
> + if (IS_ERR(st->vcc_vga_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_vga_reg),
> + "failed to get the RF Amplifier supply\n");
> +
> + st->vcc_vva_reg = devm_regulator_get_optional(&spi->dev, "vcc-vva");
> + if (IS_ERR(st->vcc_vva_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_vva_reg),
> + "failed to get the VVA Control Circuit supply\n");
> +
> + st->vcc_lna_3p3_reg = devm_regulator_get_optional(&spi->dev, "vcc-lna-3p3");
> + if (IS_ERR(st->vcc_lna_3p3_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_lna_3p3_reg),
> + "failed to get the Low Noise Amplifier 3.3V supply\n");
> +
> + st->vcc_lna_1p5_reg = devm_regulator_get_optional(&spi->dev, "vcc-lna-1p5");
> + if (IS_ERR(st->vcc_lna_1p5_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_lna_1p5_reg),
> + "failed to get the Low Noise Amplifier 1.5V supply\n");
> +
> + st->vcc_bg_reg = devm_regulator_get_optional(&spi->dev, "vcc-bg");
> + if (IS_ERR(st->vcc_lna_1p5_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_bg_reg),
> + "failed to get the Band Gap Circuit supply\n");
> +
> + st->vcc_quad_reg = devm_regulator_get_optional(&spi->dev, "vcc-quad");
> + if (IS_ERR(st->vcc_quad_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_quad_reg),
> + "failed to get the Quadruple supply\n");
> +
> + st->vcc_mixer_reg = devm_regulator_get_optional(&spi->dev, "vcc-mixer");
> + if (IS_ERR(st->vcc_quad_reg))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->vcc_mixer_reg),
> + "failed to get the Mixer supply\n");
> +
> + st->clkin = devm_clk_get(&spi->dev, "lo_in");
> + if (IS_ERR(st->clkin))
> + return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
> + "failed to get the LO input clock\n");
> +
> + return 0;
> +}
> +