The ADF4382A is a high performance, ultralow jitter, Frac-N PLL
with integrated VCO ideally suited for LO generation for 5G applications
or data converter clock applications. The high performance
PLL has a figure of merit of -239 dBc/Hz, low 1/f Noise and
high PFD frequency of 625MHz in integer mode that can achieve
ultralow in-band noise and integrated jitter. The ADF4382A can
generate frequencies in a fundamental octave range of 11.5 GHz to
21 GHz, thereby eliminating the need for sub-harmonic filters. The
divide by 2 and 4 output dividers on the part allow frequencies to
be generated from 5.75GHz to 10.5GHz and 2.875GHz to 5.25GHz
respectively.
Signed-off-by: Ciprian Hegbeli <ciprian.hegbeli@analog.com>
---
drivers/iio/frequency/Kconfig | 11 +
drivers/iio/frequency/Makefile | 1 +
drivers/iio/frequency/adf4382.c | 1825 +++++++++++++++++++++++++++++++
3 files changed, 1837 insertions(+)
create mode 100644 drivers/iio/frequency/adf4382.c
diff --git a/drivers/iio/frequency/Kconfig b/drivers/iio/frequency/Kconfig
index 583cbdf4e8cd..c4cf1ed1bc05 100644
--- a/drivers/iio/frequency/Kconfig
+++ b/drivers/iio/frequency/Kconfig
@@ -61,6 +61,17 @@ config ADF4377
To compile this driver as a module, choose M here: the
module will be called adf4377.
+config ADF4382
+ tristate "Analog Devices ADF4382 Microwave Wideband Synthesizer"
+ depends on SPI && COMMON_CLK
+ select REGMAP_SPI
+ help
+ Say yes here to build support for Analog Devices ADF4382 Microwave
+ Wideband Synthesizer.
+
+ To compile this driver as a module, choose M here: the
+ module will be called adf4382.
+
config ADMFM2000
tristate "Analog Devices ADMFM2000 Dual Microwave Down Converter"
depends on GPIOLIB
diff --git a/drivers/iio/frequency/Makefile b/drivers/iio/frequency/Makefile
index 70d0e0b70e80..4852a8748ce4 100644
--- a/drivers/iio/frequency/Makefile
+++ b/drivers/iio/frequency/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_AD9523) += ad9523.o
obj-$(CONFIG_ADF4350) += adf4350.o
obj-$(CONFIG_ADF4371) += adf4371.o
obj-$(CONFIG_ADF4377) += adf4377.o
+obj-$(CONFIG_ADF4382) += adf4382.o
obj-$(CONFIG_ADMFM2000) += admfm2000.o
obj-$(CONFIG_ADMV1013) += admv1013.o
obj-$(CONFIG_ADMV1014) += admv1014.o
diff --git a/drivers/iio/frequency/adf4382.c b/drivers/iio/frequency/adf4382.c
new file mode 100644
index 000000000000..734b5c197328
--- /dev/null
+++ b/drivers/iio/frequency/adf4382.c
@@ -0,0 +1,1825 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ADF4382 Microwave Wideband Synthesizer with Integrated VCO
+ *
+ * Copyright 2022-2024 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/debugfs.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <linux/iio/iio.h>
+#include <linux/regmap.h>
+#include <linux/gcd.h>
+#include <linux/math64.h>
+#include <linux/units.h>
+#include <linux/util_macros.h>
+
+/* ADF4382 REG0000 Map */
+#define ADF4382_SOFT_RESET_R_MSK BIT(7)
+#define ADF4382_LSB_FIRST_R_MSK BIT(6)
+#define ADF4382_ADDRESS_ASC_R_MSK BIT(5)
+#define ADF4382_SDO_ACTIVE_R_MSK BIT(4)
+#define ADF4382_SDO_ACTIVE_MSK BIT(3)
+#define ADF4382_ADDRESS_ASC_MSK BIT(2)
+#define ADF4382_LSB_FIRST_MSK BIT(1)
+#define ADF4382_SOFT_RESET_MSK BIT(0)
+
+/* ADF4382_REG0 */
+#define ADF4382_ADDR_ASC_MSK BIT(2)
+#define ADF4382_ADDR_ASC_R_MSK BIT(5)
+#define ADF4382_SDO_ACT_MSK BIT(3)
+#define ADF4382_SDO_ACT_R_MSK BIT(4)
+#define ADF4382_RESET_CMD 0x81
+
+/* ADF4382 REG0000 Bit Definition */
+#define ADF4382_SDO_ACTIVE_SPI_3W 0x0
+#define ADF4382_SDO_ACTIVE_SPI_4W 0x1
+
+#define ADF4382_ADDR_ASC_AUTO_DECR 0x0
+#define ADF4382_ADDR_ASC_AUTO_INCR 0x1
+
+#define ADF4382_LSB_FIRST_MSB 0x0
+#define ADF4382_LSB_FIRST_LSB 0x1
+
+#define ADF4382_SOFT_RESET_N_OP 0x0
+#define ADF4382_SOFT_RESET_EN 0x1
+
+/* ADF4382 REG0001 Map */
+#define ADF4382_SINGLE_INSTR_MSK BIT(7)
+#define ADF4382_MASTER_RB_CTRL_MSK BIT(5)
+
+/* ADF4382 REG0001 Bit Definition */
+#define ADF4382_SPI_STREAM_EN 0x0
+#define ADF4382_SPI_STREAM_DIS 0x1
+
+#define ADF4382_RB_SLAVE_REG 0x0
+#define ADF4382_RB_MASTER_REG 0x1
+
+/* ADF4382 REG0003 Bit Definition */
+#define ADF4382_CHIP_TYPE 0x06
+
+/* ADF4382 REG0004 Bit Definition */
+#define ADF4382_PRODUCT_ID_LSB 0x0005
+
+/* ADF4382 REG0005 Bit Definition */
+#define ADF4382_PRODUCT_ID_MSB 0x0005
+
+/* ADF4382 REG000A Map */
+#define ADF4382_SCRATCHPAD_MSK GENMASK(7, 0)
+
+/* ADF4382 REG000C Bit Definition */
+#define ADF4382_VENDOR_ID_LSB 0x56
+
+/* ADF4382 REG000D Bit Definition */
+#define ADF4382_VENDOR_ID_MSB 0x04
+
+/* ADF4382 REG000F Bit Definition */
+#define ADF4382_M_S_TRANSF_BIT_MSK BIT(0)
+
+/* ADF4382 REG0010 Map*/
+#define ADF4382_N_INT_LSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0011 Map*/
+#define ADF4382_CLKOUT_DIV_MSK GENMASK(7, 5)
+#define ADF4382_INV_CLK_OUT_MSK BIT(4)
+#define ADF4382_N_INT_MSB_MSK GENMASK(3, 0)
+
+/* ADF4382 REG0015 Map */
+#define ADF4382_M_VCO_BAND_LSB_MSK BIT(7)
+#define ADF4382_M_VCO_CORE_MSK BIT(6)
+#define ADF4382_BIAS_DEC_MODE_MSK GENMASK(5, 3)
+#define ADF4382_INT_MODE_MSK BIT(2)
+#define ADF4382_PFD_POL_MSK BIT(1)
+#define ADF4382_FRAC1WORD_MSB BIT(0)
+
+/* ADF4382 REG0016 Map */
+#define ADF4382_M_VCO_BAND_MSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG001D Map */
+#define ADF4382_BLEED_I_LSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG001E Map */
+#define ADF4382_EN_PHASE_RESYNC_MSK BIT(7)
+#define ADF4382_EN_REF_RST_MSK BIT(6)
+#define ADF4382_TIMED_SYNC_MSK BIT(5)
+#define ADF4382_BLEED_I_MSB_MSK GENMASK(4, 0)
+
+/* ADF4382 REG001F Map */
+#define ADF4382_SW_SYNC_MSK BIT(7)
+#define ADF4382_SPARE_1F_MSK BIT(6)
+#define ADF4382_BLEED_POL_MSK BIT(5)
+#define ADF4382_EN_BLEED_MSK BIT(4)
+#define ADF4382_CP_I_MSK GENMASK(3, 0)
+
+/* ADF4382 REG0020 Map */
+#define ADF4382_EN_AUTOCAL_MSK BIT(7)
+#define ADF4382_EN_RDBLR_MSK BIT(6)
+#define ADF4382_R_DIV_MSK GENMASK(5, 0)
+
+/* ADF4382 REG0021 Map */
+#define ADF4382_PHASE_WORD_LSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0022 Map */
+#define ADF4382_PHASE_WORD_MID_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0023 Map */
+#define ADF4382_PHASE_WORD_MSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0024 Map */
+#define ADF4382_SPARE_24_MSK GENMASK(7, 5)
+#define ADF4382_DCLK_DIV_SEL_MSK BIT(4)
+#define ADF4382_DNCLK_DIV1_MSK GENMASK(3, 2)
+#define ADF4382_DCLK_DIV1_MSK GENMASK(1, 0)
+
+/* ADF4382 REG0025 Map */
+#define ADF4382_RESYNC_WAIT_LSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0026 Map */
+#define ADF4382_RESYNC_WAIT_MSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0027 Map */
+#define ADF4382_CAL_BLEED_FINE_MIN_MSK GENMASK(7, 4)
+#define ADF4382_BLEED_ADJ_SCALE_MSK GENMASK(3, 0)
+
+/* ADF4382 REG0028 Map */
+#define ADF4382_PH_RESYNC_RB_SEL_MSK BIT(7)
+#define ADF4382_LSB_P1_MSK BIT(6)
+#define ADF4382_VAR_MOD_EN_MSK BIT(5)
+#define ADF4382_DITHER1_SCALE_MSK GENMASK(4, 2)
+#define ADF4382_EN_DITHER2_MSK BIT(1)
+#define ADF4382_EN_DITHER1_MSK BIT(0)
+
+/* ADF4382 REG0029 Map */
+#define ADF4382_CLK2_OPWR_MSK GENMASK(7, 4)
+#define ADF4382_CLK1_OPWR_MSK GENMASK(3, 0)
+
+/* ADF4382 REG002A Map */
+#define ADF4382_FN_DBL_MSK BIT(7)
+#define ADF4382_PD_NDIV_TL_MSK BIT(6)
+#define ADF4382_CLKOUT_BST_MSK BIT(5)
+#define ADF4382_PD_SYNC_MSK BIT(4)
+#define ADF4382_PD_CLK_MSK BIT(3)
+#define ADF4382_PD_RDET_MSK BIT(2)
+#define ADF4382_PD_ADC_MSK BIT(1)
+#define ADF4382_PD_CALGEN_MSK BIT(0)
+
+/* ADF4382 REG002B Map */
+#define ADF4382_PD_ALL_MSK BIT(7)
+#define ADF4382_PD_RDIV_TL_MSK BIT(6)
+#define ADF4382_PD_NDIV_MSK BIT(5)
+#define ADF4382_PD_VCO_MSK BIT(4)
+#define ADF4382_PD_LD_MSK BIT(3)
+#define ADF4382_PD_PFDCP_MSK BIT(2)
+#define ADF4382_PD_CLKOUT1_MSK BIT(1)
+#define ADF4382_PD_CLKOUT2_MSK BIT(0)
+
+/* ADF4382 REG002C Map */
+#define ADF4382_LDWIN_PW_MSK GENMASK(7, 4)
+#define ADF4382_LD_COUNT_OPWR_MSK GENMASK(3, 0)
+
+/* ADF4382 REG002D Map */
+#define ADF4382_EN_DNCLK_MSK BIT(7)
+#define ADF4382_EN_DRCLK_MSK BIT(6)
+#define ADF4382_EN_LOL_MSK BIT(5)
+#define ADF4382_EN_LDWIN_MSK BIT(4)
+#define ADF4382_PDET_POL_MSK BIT(3)
+#define ADF4382_RST_LD_MSK BIT(2)
+#define ADF4382_LD_O_CTRL_MSK GENMASK(1, 0)
+
+/* ADF4382 REG002E Map */
+#define ADF4382_MUXOUT_MSK GENMASK(7, 4)
+#define ADF4382_ABPW_WD_MSK BIT(3)
+#define ADF4382_EN_CPTEST_MSK BIT(2)
+#define ADF4382_CP_DOWN_MSK BIT(1)
+#define ADF4382_CP_UP_MSK BIT(0)
+
+/* ADF4382 REG002F Map*/
+#define ADF4382_BST_REF_MSK BIT(7)
+#define ADF4382_FILT_REF_MSK BIT(6)
+#define ADF4382_RDBLR_DC_MSK GENMASK(5, 0)
+
+/* ADF4382 REG0030 Map */
+#define ADF4382_MUTE_NCLK_MSK BIT(7)
+#define ADF4382_MUTE_RCLK_MSK BIT(6)
+#define ADF4382_REF_SEL_MSK BIT(5)
+#define ADF4382_INV_RDBLR_MSK BIT(4)
+#define ADF4382_RDBLR_DEL_SEL_MSK GENMASK(3, 0)
+
+/* ADF4382 REG0031 Map */
+#define ADF4382_SYNC_DEL_MSK GENMASK(7, 5)
+#define ADF4382_RST_SYS_MSK BIT(4)
+#define ADF4382_EN_ADC_CLK_MSK BIT(3)
+#define ADF4382_EN_VCAL_MSK BIT(2)
+#define ADF4382_CAL_CT_SEL_MSK BIT(1)
+#define ADF4382_DCLK_MODE_MSK BIT(0)
+
+/* ADF4382 REG0032 Map */
+#define ADF4382_SPARE_32_MSK BIT(7)
+#define ADF4382_BLEED_ADJ_CAL_MSK BIT(6)
+#define ADF4382_DEL_MODE_MSK BIT(5)
+#define ADF4382_EN_AUTO_ALIGN_MSK BIT(4)
+#define ADF4382_PHASE_ADJ_POL_MSK BIT(3)
+#define ADF4382_EFM3_MODE_MSK GENMASK(2, 0)
+
+/* ADF4382 REG0033 Map */
+#define ADF4382_PHASE_ADJUST_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0034 Map */
+#define ADF4382_PHASE_ADJ_MSK BIT(7)
+#define ADF4382_DRCLK_DEL_MSK GENMASK(6, 4)
+#define ADF4382_DNCLK_DEL_MSK GENMASK(3, 1)
+#define ADF4382_RST_CNTR_MSK BIT(0)
+
+/* ADF4382 REG0035 Map */
+#define ADF4382_SPARE_35_MSK GENMASK(7, 6)
+#define ADF4382_M_VCO_BIAS_MSK GENMASK(5, 0)
+
+/* ADF4382 REG0036 Map */
+#define ADF4382_CLKODIV_DB_MSK BIT(7)
+#define ADF4382_DCLK_DIV_DB_MSK BIT(6)
+#define ADF4382_SPARE_36_MSK GENMASK(5, 2)
+#define ADF4382_EN_LUT_GEN_MSK BIT(1)
+#define ADF4382_EN_LUT_CAL_MSK BIT(0)
+
+/* ADF4382 REG0037 Map */
+#define ADF4382_CAL_COUNT_TO_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0038 Map */
+#define ADF4382_CAL_VTUNE_TO_LSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0039 Map */
+#define ADF4382_O_VCO_DB_MSK BIT(7)
+#define ADF4382_CAL_VTUNE_TO_MSB_MSK GENMASK(6, 0)
+
+/* ADF4382 REG003A Map */
+#define ADF4382_CAL_VCO_TO_LSB_MSK GENMASK(7, 0)
+
+/* ADF4382 REG003B Map */
+#define ADF4382_DEL_CTRL_DB_MSK BIT(7)
+#define ADF4382_CAL_VCO_TO_MSB_MSK GENMASK(6, 0)
+
+/* ADF4382 REG003C Map */
+#define ADF4382_CNTR_DIV_WORD_MSK GENMASK(7, 0)
+
+/* ADF4382 REG003D Map */
+#define ADF4382_SPARE_3D_MSK BIT(7)
+#define ADF4382_SYNC_SP_DB_MSK BIT(6)
+#define ADF4382_CMOS_OV_MSK BIT(5)
+#define ADF4382_READ_MODE_MSK BIT(4)
+#define ADF4382_CNTR_DIV_WORD_MSB_MSK GENMASK(3, 0)
+
+/* ADF4382 REG003E Map */
+#define ADF4382_ADC_CLK_DIV_MSK GENMASK(7, 0)
+
+/* ADF4382 REG003F Map */
+#define ADF4382_EN_ADC_CNV_MSK BIT(7)
+#define ADF4382_EN_ADC_VTEST_MSK BIT(6)
+#define ADF4382_ADC_VTEST_SEL_MSK BIT(5)
+#define ADF4382_ADC_MUX_SEL_MSK BIT(4)
+#define ADF4382_ADC_F_CONV_MSK BIT(3)
+#define ADF4382_ADC_C_CONV_MSK BIT(2)
+#define ADF4382_EN_ADC_MSK BIT(1)
+#define ADF4382_SPARE_3F_MSK BIT(0)
+
+/* ADF4382 REG0040 Map */
+#define ADF4382_EXT_DIV_DEC_SEL_MSK BIT(7)
+#define ADF4382_ADC_CLK_TEST_SEL_MSK BIT(6)
+#define ADF4382_MUTE_CLKOUT2_MSK GENMASK(5, 3)
+#define ADF4382_MUTE_CLKOUT1_MSK GENMASK(2, 0)
+
+/* ADF4382 REG0041 Map */
+#define ADF4382_EXT_DIV_MSK GENMASK(7, 5)
+#define ADF4382_EN_VCO_CAP_TEST_MSK BIT(4)
+#define ADF4382_EN_CALGEN_CAP_TEST_MSK BIT(3)
+#define ADF4382_EN_CP_CAP_TEST_MSK BIT(2)
+#define ADF4382_CAP_TEST_STATE_MSK BIT(1)
+#define ADF4382_TRANS_LOOP_SEL_MSK BIT(0)
+
+/* ADF4382 REG0042 Map */
+#define ADF4382_NDIV_PWRUP_TIMEOUT_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0043 Map */
+#define ADF4382_CAL_BLEED_FINE_MAX_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0044 Map */
+#define ADF4382_VCAL_ZERO_MSK BIT(7)
+#define ADF4382_VPTAT_CALGEN_MSK GENMASK(6, 0)
+
+/* ADF4382 REG0045 Map */
+#define ADF4382_SPARE_45_MSK BIT(7)
+#define ADF4382_VCTAT_CALGEN_MSK GENMASK(6, 0)
+
+/* ADF4382 REG0046 Map */
+#define ADF4382_NVMDIN_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0047 Map */
+#define ADF4382_SPARE_47_MSK BIT(7)
+#define ADF4382_NVMADDR_MSK GENMASK(6, 3)
+#define ADF4382_NVMBIT_SEL GENMASK(2, 0)
+
+/* ADF4382 REG0048 Map */
+#define ADF4382_TRIM_LATCH_MSK BIT(7)
+#define ADF4382_NVMTEST_MSK BIT(6)
+#define ADF4382_NVMPROG_MSK BIT(5)
+#define ADF4382_NVMRD_MSK BIT(4)
+#define ADF4382_NVMSTART_MSK BIT(3)
+#define ADF4382_NVMON_MSK BIT(2)
+#define ADF4382_MARGIN_MSK GENMASK(1, 0)
+
+/* ADF4382 REG0049 Map */
+#define ADF4382_NVMDOUT_MSK GENMASK(7, 0)
+
+/* ADF4382 REG004A Map */
+#define ADF4382_SCAN_MODE_CODE_MSK GENMASK(7, 0)
+
+/* ADF4382 REG004B Map */
+#define ADF4382_TEMP_OFFSET_MSK GENMASK(7, 0)
+
+/* ADF4382 REG004C Map */
+#define ADF4382_SPARE_4C_MSK GENMASK(7, 6)
+#define ADF4382_TEMP_SLOPE_MSK GENMASK(5, 0)
+
+/* ADF4382 REG004D Map */
+#define ADF4382_VCO_FSM_TEST_MUX_MSK GENMASK(7, 5)
+#define ADF4382_SPARE_4D_MSK GENMASK(4, 3)
+#define ADF4382_O_VCO_BIAS_MSK BIT(2)
+#define ADF4382_O_VCO_BAND_MSK BIT(1)
+#define ADF4382_O_VCO_CORE_MSK BIT(0)
+
+/* ADF4382 REG004E Map */
+#define ADF4382_EN_TWO_PASS_CALL_MSK BIT(4)
+#define ADF4382_TWO_PASS_BAND_START_MSK GENMASK(3, 0)
+
+/* ADF4382 REG004F Map */
+#define ADF4382_LUT_SCALE_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0050 Map */
+#define ADF4382_SPARE0_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0051 Map */
+#define ADF4382_SPARE1_MSK GENMASK(7, 0)
+
+/* ADF4382 REG0052 Map */
+#define ADF4382_SYNC_REF_SPARE_MSK GENMASK(7, 4)
+#define ADF4382_SYNC_MON_DEL_MSK GENMASK(3, 0)
+
+/* ADF4382 REG0053 Map */
+#define ADF4382_PD_SYNC_MON_MSK BIT(6)
+#define ADF4382_SYNC_SEL_MSK BIT(5)
+#define ADF4382_RST_SYNC_MON_MSK BIT(4)
+#define ADF4382_SYNC_SH_DEL_MSK GENMASK(3, 0)
+
+/* ADF4382 REG0054 Map */
+#define ADF4382_ADC_ST_CNV_MSK BIT(0)
+
+/* ADF4382 REG0058 Map */
+#define ADF4382_PLL_LOCK_MSK BIT(0)
+
+#define ADF4382_MOD2WORD_LSB_MSK GENMASK(7, 0)
+#define ADF4382_MOD2WORD_MID_MSK GENMASK(15, 8)
+#define ADF4382_MOD2WORD_MSB_MSK GENMASK(23, 16)
+
+#define ADF4382_FRAC1WORD_LSB_MSK GENMASK(7, 0)
+#define ADF4382_FRAC1WORD_MID_MSK GENMASK(15, 8)
+#define ADF4382_FRAC1WORD_MSB_MSK GENMASK(23, 16)
+#define ADF4382_FRAC1WORD_MS_BIT_MSK BIT(24)
+
+#define ADF4382_FRAC2WORD_LSB_MSK GENMASK(7, 0)
+#define ADF4382_FRAC2WORD_MID_MSK GENMASK(15, 8)
+#define ADF4382_FRAC2WORD_MSB_MSK GENMASK(23, 16)
+
+#define ADF4382_DEL_CNT_LSB_MSK GENMASK(7, 0)
+#define ADF4382_DEL_CNT_MSB_MSK GENMASK(15, 8)
+
+#define ADF4382_DEL_CNT_FINE_MSK GENMASK(8, 0)
+#define ADF4382_DEL_CNT_COARSE_MSK GENMASK(12, 9)
+#define ADF4382_DEL_CNT_BLEED_POL_MSK BIT(15)
+
+#define ADF4382_REF_MIN 10000000ULL // 10MHz
+#define ADF4382_REF_MAX 5000000000ULL // 5GHz
+#define ADF4382_VCO_FREQ_MIN 11000000000ULL // 11GHz
+#define ADF4382_VCO_FREQ_MAX 22000000000ULL // 22GHz
+#define ADF4382A_VCO_FREQ_MIN 11500000000ULL // 11.5GHz
+#define ADF4382A_VCO_FREQ_MAX 21000000000ULL // 21GHz
+#define ADF4382_PFD_FREQ_MAX 625000000ULL // 625MHz
+#define ADF4382_PFD_FREQ_FRAC_MAX 250000000ULL // 250MHz
+#define ADF4382_PFD_FREQ_MIN 5400000ULL // 5.4MHz
+#define ADF4382_MOD1WORD 0x2000000ULL // 2^25
+#define ADF4382_MOD2WORD_MAX 0xFFFFFFU // 2^24 - 1
+#define ADF4382_PHASE_RESYNC_MOD2WORD_MAX 0x1FFFFU // 2^17 - 1
+#define ADF4382_CHANNEL_SPACING_MAX 78125U
+#define ADF4382_DCLK_DIV1_0_MAX 160000000ULL // 160MHz
+#define ADF4382_DCLK_DIV1_1_MAX 320000000ULL // 320MHz
+#define ADF4382_OUT_PWR_MAX 15
+#define ADF4382_CLKOUT_DIV_REG_VAL_MAX 4
+#define ADF4382A_CLKOUT_DIV_REG_VAL_MAX 2
+
+#define ADF4382_CP_I_DEFAULT 15
+#define ADF4382_OPOWER_DEFAULT 11
+#define ADF4382_REF_DIV_DEFAULT 1
+#define ADF4382_RFOUT_DEFAULT 2875000000ULL // 2.875GHz
+#define ADF4382_SCRATCHPAD_VAL 0xA5
+
+#define ADF4382_PHASE_BLEED_CNST_MUL 511
+#define ADF4382_PHASE_BLEED_CNST_DIV 285
+#define ADF4382_VCO_CAL_CNT 202
+#define ADF4382_VCO_CAL_VTUNE 124
+#define ADF4382_VCO_CAL_ALC 250
+
+#define FS_PER_NS MICRO
+#define NS_PER_MS MICRO
+#define MS_PER_NS MICRO
+#define NS_PER_FS MICRO
+#define PS_PER_NS 1000
+#define UA_PER_A 1000000
+
+#define PERIOD_IN_DEG 360
+#define PERIOD_IN_DEG_MS 360000
+
+#ifdef CONFIG_64BIT
+#define ADF4382_CLK_SCALE 1
+#else
+#define ADF4382_CLK_SCALE 10ULL
+#endif
+
+enum {
+ ADF4382_FREQ,
+ ADF4382_EN_AUTO_ALIGN,
+};
+
+enum {
+ ADF4382,
+ ADF4382A,
+};
+
+struct adf4382_state {
+ struct spi_device *spi;
+ struct regmap *regmap;
+ struct clk *clkin;
+ struct clk *clkout;
+ struct clk_hw clk_hw;
+ /* Protect against concurrent accesses to the device and data content */
+ struct mutex lock;
+ struct notifier_block nb;
+ unsigned int ref_freq_hz;
+ u8 cp_i;
+ u8 opwr_a;
+ u64 freq;
+ bool spi_3wire_en;
+ bool ref_doubler_en;
+ bool auto_align_en;
+ u8 ref_div;
+ u8 clkout_div_reg_val_max;
+ u16 bleed_word;
+ int phase;
+ bool cmos_3v3;
+ u64 vco_max;
+ u64 vco_min;
+};
+
+#define to_adf4382_state(_hw) container_of(_hw, struct adf4382_state, clk_hw)
+
+/* Charge pump current values expressed in uA */
+static const int adf4382_ci_ua[] = {
+ 790, 990, 1190, 1380, 1590, 1980, 2390, 2790, 3180, 3970, 4770, 5570,
+ 6330, 7910, 9510, 11100
+};
+
+static const struct reg_sequence adf4382_reg_default[] = {
+ { 0x00a, 0xA5 }, { 0x200, 0x00 }, { 0x201, 0x00 }, { 0x202, 0x00 },
+ { 0x203, 0x00 }, { 0x203, 0x00 }, { 0x203, 0x00 }, { 0x100, 0x25 },
+ { 0x101, 0x3F }, { 0x102, 0x3F }, { 0x103, 0x3F }, { 0x104, 0x3F },
+ { 0x105, 0x3F }, { 0x106, 0x3F }, { 0x107, 0x3F }, { 0x108, 0x3F },
+ { 0x109, 0x25 }, { 0x10A, 0x25 }, { 0x10B, 0x3F }, { 0x10C, 0x3F },
+ { 0x10D, 0x3F }, { 0x10E, 0x3F }, { 0x10F, 0x3F }, { 0x110, 0x3F },
+ { 0x111, 0x3F }, { 0x054, 0x00 }, { 0x053, 0x45 }, { 0x052, 0x00 },
+ { 0x051, 0x00 }, { 0x050, 0x00 }, { 0x04f, 0x08 }, { 0x04e, 0x06 },
+ { 0x04d, 0x00 }, { 0x04c, 0x2B }, { 0x04b, 0x5D }, { 0x04a, 0x00 },
+ { 0x048, 0x00 }, { 0x047, 0x00 }, { 0x046, 0x00 }, { 0x045, 0x62 },
+ { 0x044, 0x3F }, { 0x043, 0xB8 }, { 0x042, 0x01 }, { 0x041, 0x00 },
+ { 0x040, 0x00 }, { 0x03f, 0x82 }, { 0x03e, 0x4E }, { 0x03c, 0x00 },
+ { 0x03b, 0x00 }, { 0x03a, 0xFA }, { 0x039, 0x00 }, { 0x038, 0x71 },
+ { 0x037, 0x82 }, { 0x036, 0xC0 }, { 0x035, 0x00 }, { 0x034, 0x36 },
+ { 0x033, 0x00 }, { 0x032, 0x40 }, { 0x031, 0x63 }, { 0x030, 0x0F },
+ { 0x02f, 0x3F }, { 0x02e, 0x00 }, { 0x02d, 0xF1 }, { 0x02c, 0x0E },
+ { 0x02b, 0x01 }, { 0x02a, 0x30 }, { 0x029, 0x09 }, { 0x028, 0x00 },
+ { 0x027, 0xF0 }, { 0x026, 0x00 }, { 0x025, 0x01 }, { 0x024, 0x01 },
+ { 0x023, 0x00 }, { 0x022, 0x00 }, { 0x021, 0x00 }, { 0x01e, 0x20 },
+ { 0x01d, 0x00 }, { 0x01c, 0x00 }, { 0x01b, 0x00 }, { 0x01a, 0x00 },
+ { 0x019, 0x00 }, { 0x018, 0x00 }, { 0x017, 0x00 }, { 0x016, 0x00 },
+ { 0x015, 0x06 }, { 0x014, 0x00 }, { 0x013, 0x00 }, { 0x012, 0x00 },
+ { 0x011, 0x00 }, { 0x010, 0x50 }
+};
+
+static const struct regmap_config adf4382_regmap_config = {
+ .reg_bits = 16,
+ .val_bits = 8,
+ .read_flag_mask = BIT(7),
+};
+
+static int adf4382_pfd_compute(struct adf4382_state *st, u64 *pfd_freq_hz)
+{
+ u64 tmp;
+
+ tmp = DIV_ROUND_CLOSEST(st->ref_freq_hz, st->ref_div);
+ if (st->ref_doubler_en)
+ tmp *= 2;
+
+ if (tmp < ADF4382_PFD_FREQ_MIN || tmp > ADF4382_PFD_FREQ_MAX)
+ return -EINVAL;
+
+ *pfd_freq_hz = tmp;
+
+ return 0;
+}
+
+static int adf4382_frac2_compute(struct adf4382_state *st, u64 res,
+ unsigned int pfd_freq_hz, u32 *frac2_word,
+ u32 *mod2_word)
+{
+ u32 channel_spacing;
+ u8 en_phase_resync;
+ u32 chsp_freq;
+ u32 mod2_tmp;
+ u32 mod2_max;
+ u32 mod2_wd;
+ u32 gcd_var;
+
+ channel_spacing = 1;
+ mod2_wd = 1;
+
+ en_phase_resync = regmap_test_bits(st->regmap, 0x1E,
+ ADF4382_EN_PHASE_RESYNC_MSK);
+ if (en_phase_resync < 0)
+ return en_phase_resync;
+
+ if (en_phase_resync)
+ mod2_max = ADF4382_PHASE_RESYNC_MOD2WORD_MAX;
+ else
+ mod2_max = ADF4382_MOD2WORD_MAX;
+
+ do {
+ chsp_freq = channel_spacing * ADF4382_MOD1WORD;
+ gcd_var = gcd(chsp_freq, pfd_freq_hz);
+ mod2_tmp = DIV_ROUND_UP(pfd_freq_hz, gcd_var);
+
+ if (mod2_tmp > mod2_max) {
+ channel_spacing *= 5;
+ } else {
+ mod2_wd = mod2_tmp;
+ break;
+ }
+
+ } while (channel_spacing < ADF4382_CHANNEL_SPACING_MAX);
+
+ if (!en_phase_resync)
+ mod2_wd *= DIV_ROUND_DOWN_ULL(mod2_max, mod2_wd);
+
+ *frac2_word = DIV_ROUND_CLOSEST_ULL(res * mod2_wd, pfd_freq_hz);
+ *mod2_word = mod2_wd;
+
+ return 0;
+}
+
+static int adf4382_pll_fract_n_compute(struct adf4382_state *st, unsigned int pfd_freq_hz,
+ u16 *n_int, u32 *frac1_word, u32 *frac2_word,
+ u32 *mod2_word)
+{
+ u64 rem;
+ u64 res;
+
+ *n_int = div64_u64_rem(st->freq, pfd_freq_hz, &rem);
+
+ res = rem * ADF4382_MOD1WORD;
+ *frac1_word = (u32)div64_u64_rem(res, pfd_freq_hz, &rem);
+
+ *frac2_word = 0;
+ *mod2_word = 0;
+
+ if (pfd_freq_hz > ADF4382_PFD_FREQ_FRAC_MAX) {
+ dev_warn(&st->spi->dev, "PFD frequency exceeds 250MHz.");
+ dev_warn(&st->spi->dev, "Only integer mode available.");
+ }
+
+ if (rem > 0)
+ return adf4382_frac2_compute(st, rem, pfd_freq_hz, frac2_word,
+ mod2_word);
+
+ return 0;
+}
+
+static int _adf4382_set_freq(struct adf4382_state *st)
+{
+ u32 frac2_word = 0;
+ u32 mod2_word = 0;
+ u64 pfd_freq_hz;
+ u32 frac1_word;
+ u8 clkout_div;
+ u32 read_val;
+ u8 dclk_div1;
+ u8 int_mode;
+ u8 en_bleed;
+ u8 ldwin_pw;
+ u16 n_int;
+ u8 div1;
+ u64 tmp;
+ u64 vco;
+ int ret;
+ u8 var;
+
+ ret = adf4382_pfd_compute(st, &pfd_freq_hz);
+ if (ret) {
+ dev_err(&st->spi->dev, "PFD frequency is out of range.\n");
+ return ret;
+ }
+
+ for (clkout_div = 0; clkout_div <= st->clkout_div_reg_val_max; clkout_div++) {
+ tmp = (1 << clkout_div) * st->freq;
+ if (tmp < st->vco_min || tmp > st->vco_max)
+ continue;
+
+ vco = tmp;
+ break;
+ }
+
+ if (vco == 0) {
+ dev_err(&st->spi->dev, "Output frequency is out of range.\n");
+ ret = -EINVAL;
+ return ret;
+ }
+
+ ret = adf4382_pll_fract_n_compute(st, pfd_freq_hz, &n_int, &frac1_word,
+ &frac2_word, &mod2_word);
+ if (ret)
+ return ret;
+
+ if (frac1_word || frac2_word) {
+ int_mode = 0;
+ en_bleed = 1;
+
+ if (pfd_freq_hz <= (40 * HZ_PER_MHZ)) {
+ ldwin_pw = 7;
+ } else if (pfd_freq_hz <= (50 * HZ_PER_MHZ)) {
+ ldwin_pw = 6;
+ } else if (pfd_freq_hz <= (100 * HZ_PER_MHZ)) {
+ ldwin_pw = 5;
+ } else if (pfd_freq_hz <= (200 * HZ_PER_MHZ)) {
+ ldwin_pw = 4;
+ } else if (pfd_freq_hz <= (250 * HZ_PER_MHZ)) {
+ if (st->freq >= (5000U * HZ_PER_MHZ) &&
+ st->freq < (6400U * HZ_PER_MHZ)) {
+ ldwin_pw = 3;
+ } else {
+ ldwin_pw = 2;
+ }
+ }
+ } else {
+ int_mode = 1;
+ en_bleed = 0;
+
+ tmp = DIV_ROUND_UP_ULL(pfd_freq_hz, UA_PER_A);
+ tmp *= adf4382_ci_ua[st->cp_i];
+ tmp = DIV_ROUND_UP_ULL(st->bleed_word, tmp);
+ if (tmp <= 85)
+ ldwin_pw = 0;
+ else
+ ldwin_pw = 1;
+ }
+
+ dev_dbg(&st->spi->dev,
+ "VCO=%llu PFD=%llu RFout_div=%u N=%u FRAC1=%u FRAC2=%u MOD2=%u\n",
+ vco, pfd_freq_hz, 1 << clkout_div, n_int,
+ frac1_word, frac2_word, mod2_word);
+
+ ret = regmap_update_bits(st->regmap, 0x28, ADF4382_VAR_MOD_EN_MSK,
+ frac2_word != 0 ? 0xff : 0);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x15, ADF4382_INT_MODE_MSK,
+ FIELD_PREP(ADF4382_INT_MODE_MSK, int_mode));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x1D,
+ FIELD_GET(ADF4382_BLEED_I_LSB_MSK, st->bleed_word));
+ if (ret)
+ return ret;
+
+ var = (st->bleed_word >> 8) & ADF4382_BLEED_I_MSB_MSK;
+ ret = regmap_update_bits(st->regmap, 0x1E, ADF4382_BLEED_I_MSB_MSK, var);
+ if (ret)
+ return ret;
+ ret = regmap_update_bits(st->regmap, 0x1F, ADF4382_EN_BLEED_MSK,
+ FIELD_PREP(ADF4382_EN_BLEED_MSK, en_bleed));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x1A,
+ FIELD_GET(ADF4382_MOD2WORD_LSB_MSK, mod2_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x1B,
+ FIELD_GET(ADF4382_MOD2WORD_MID_MSK, mod2_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x1C,
+ FIELD_GET(ADF4382_MOD2WORD_MSB_MSK, mod2_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x12,
+ FIELD_GET(ADF4382_FRAC1WORD_LSB_MSK, frac1_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x13,
+ FIELD_GET(ADF4382_FRAC1WORD_MID_MSK, frac1_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x14,
+ FIELD_GET(ADF4382_FRAC1WORD_MSB_MSK, frac1_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x15, ADF4382_FRAC1WORD_MSB,
+ FIELD_GET(ADF4382_FRAC1WORD_MS_BIT_MSK, frac1_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x17,
+ FIELD_GET(ADF4382_FRAC2WORD_LSB_MSK, frac2_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x18,
+ FIELD_GET(ADF4382_FRAC2WORD_MID_MSK, frac2_word));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x19,
+ FIELD_GET(ADF4382_FRAC2WORD_MSB_MSK, frac2_word));
+ if (ret)
+ return ret;
+
+ dclk_div1 = 2;
+ div1 = 8;
+ if (pfd_freq_hz <= ADF4382_DCLK_DIV1_0_MAX) {
+ dclk_div1 = 0;
+ div1 = 1;
+ } else if (pfd_freq_hz <= ADF4382_DCLK_DIV1_1_MAX) {
+ dclk_div1 = 1;
+ div1 = 2;
+ }
+
+ ret = regmap_update_bits(st->regmap, 0x24, ADF4382_DCLK_DIV1_MSK,
+ FIELD_PREP(ADF4382_DCLK_DIV1_MSK, dclk_div1));
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x31, ADF4382_DCLK_MODE_MSK, 0xff);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x31, ADF4382_CAL_CT_SEL_MSK, 0xff);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x38, ADF4382_VCO_CAL_VTUNE);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x3a, ADF4382_VCO_CAL_ALC);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x37, ADF4382_VCO_CAL_CNT);
+ if (ret)
+ return ret;
+
+ var = DIV_ROUND_UP(div_u64(pfd_freq_hz, div1 * 400000) - 2, 4);
+ var = clamp_t(u8, var, 0U, 255U);
+ ret = regmap_write(st->regmap, 0x3e, var);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x2c, ADF4382_LD_COUNT_OPWR_MSK,
+ 10);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x2c, ADF4382_LDWIN_PW_MSK,
+ FIELD_PREP(ADF4382_LDWIN_PW_MSK, ldwin_pw));
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x11, ADF4382_CLKOUT_DIV_MSK,
+ FIELD_PREP(ADF4382_CLKOUT_DIV_MSK, clkout_div));
+ if (ret)
+ return ret;
+
+ var = (n_int >> 8) & ADF4382_N_INT_MSB_MSK;
+ ret = regmap_update_bits(st->regmap, 0x11, ADF4382_N_INT_MSB_MSK, var);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x10,
+ FIELD_PREP(ADF4382_N_INT_LSB_MSK, n_int));
+ if (ret)
+ return ret;
+
+ mdelay(1);
+
+ ret = regmap_read(st->regmap, 0x58, &read_val);
+ if (ret)
+ return ret;
+
+ if (!FIELD_GET(ADF4382_PLL_LOCK_MSK, read_val)) {
+ dev_err(&st->spi->dev, "PLL is not locked.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int adf4382_set_freq(struct adf4382_state *st)
+{
+ int ret;
+
+ mutex_lock(&st->lock);
+ ret = _adf4382_set_freq(st);
+ mutex_unlock(&st->lock);
+
+ return ret;
+}
+
+static int adf4382_get_freq(struct adf4382_state *st, u64 *val)
+{
+ unsigned int tmp;
+ u32 frac1 = 0;
+ u32 frac2 = 0;
+ u32 mod2 = 0;
+ u64 freq;
+ u64 pfd;
+ u16 n;
+ int ret;
+
+ ret = adf4382_pfd_compute(st, &pfd);
+ if (ret)
+ return ret;
+
+ ret = regmap_read(st->regmap, 0x11, &tmp);
+ if (ret)
+ return ret;
+
+ n = FIELD_PREP(ADF4382_N_INT_MSB_MSK, tmp);
+ n = n << 8;
+
+ ret = regmap_read(st->regmap, 0x10, &tmp);
+ if (ret)
+ return ret;
+ n |= FIELD_PREP(ADF4382_N_INT_LSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x15, &tmp);
+ if (ret)
+ return ret;
+ frac1 |= FIELD_PREP(ADF4382_FRAC1WORD_MS_BIT_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x14, &tmp);
+ if (ret)
+ return ret;
+ frac1 |= FIELD_PREP(ADF4382_FRAC1WORD_MSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x13, &tmp);
+ if (ret)
+ return ret;
+ frac1 |= FIELD_PREP(ADF4382_FRAC1WORD_MID_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x12, &tmp);
+ if (ret)
+ return ret;
+ frac1 |= FIELD_PREP(ADF4382_FRAC1WORD_LSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x19, &tmp);
+ if (ret)
+ return ret;
+ frac2 |= FIELD_PREP(ADF4382_FRAC2WORD_MSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x18, &tmp);
+ if (ret)
+ return ret;
+ frac2 |= FIELD_PREP(ADF4382_FRAC2WORD_MID_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x17, &tmp);
+ if (ret)
+ return ret;
+ frac2 |= FIELD_PREP(ADF4382_FRAC2WORD_LSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x1c, &tmp);
+ if (ret)
+ return ret;
+ mod2 |= FIELD_PREP(ADF4382_MOD2WORD_MSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x1b, &tmp);
+ if (ret)
+ return ret;
+ mod2 |= FIELD_PREP(ADF4382_MOD2WORD_MID_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x1a, &tmp);
+ if (ret)
+ return ret;
+ mod2 |= FIELD_PREP(ADF4382_MOD2WORD_LSB_MSK, tmp);
+
+ if (mod2 == 0)
+ mod2 = 1;
+
+ freq = frac2 * pfd;
+ freq = div_u64(freq, mod2);
+ freq = freq + (frac1 * pfd);
+ freq = div_u64(freq, ADF4382_MOD1WORD);
+ freq = freq + (n * pfd);
+
+ *val = freq;
+ return 0;
+}
+
+static int adf4382_set_phase_adjust(struct adf4382_state *st, u32 phase_fs)
+{
+ u8 phase_reg_value;
+ u64 phase_deg_fs;
+ u64 phase_deg_ns;
+ u64 phase_deg_ms;
+ u64 phase_bleed;
+ u64 phase_value;
+ u64 pfd_freq_hz;
+ u64 phase_ci;
+ int ret;
+
+ ret = regmap_update_bits(st->regmap, 0x1E, ADF4382_EN_PHASE_RESYNC_MSK,
+ 0xff);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x1F, ADF4382_EN_BLEED_MSK, 0xff);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(st->regmap, 0x32, ADF4382_DEL_MODE_MSK, 0x0);
+ if (ret)
+ return ret;
+
+ ret = adf4382_pfd_compute(st, &pfd_freq_hz);
+ if (ret) {
+ dev_err(&st->spi->dev, "PFD frequency is out of range.\n");
+ return ret;
+ }
+
+ // Determine the phase adjustment in degrees relative the output freq.
+ phase_deg_fs = phase_fs * st->freq;
+ phase_deg_ns = div_u64(phase_deg_fs, FS_PER_NS);
+ phase_deg_ns = PERIOD_IN_DEG * phase_deg_ns;
+ phase_deg_ms = div_u64(phase_deg_ns, NS_PER_MS);
+
+ if (phase_deg_ms > PERIOD_IN_DEG_MS) {
+ dev_err(&st->spi->dev, "Phase adjustment is out of range.\n");
+ return -EINVAL;
+ }
+
+ /*
+ * The charge pump current will also need to be taken in to account
+ * as well as the Bleed constant
+ */
+ phase_ci = phase_deg_ms * adf4382_ci_ua[st->cp_i];
+ phase_bleed = phase_ci * ADF4382_PHASE_BLEED_CNST_MUL;
+ phase_bleed = div_u64(phase_bleed, ADF4382_PHASE_BLEED_CNST_DIV);
+
+ // Computation of the register value for the phase adjust
+ phase_value = phase_bleed * pfd_freq_hz;
+ phase_value = div64_u64(phase_value, st->freq);
+ phase_value = div_u64(phase_value, PERIOD_IN_DEG);
+ phase_value = DIV_ROUND_CLOSEST_ULL(phase_value, MILLI);
+
+ // Mask the value to 8 bits
+ phase_reg_value = phase_value & 0xff;
+
+ ret = regmap_write(st->regmap, 0x33, phase_reg_value);
+ if (ret)
+ return ret;
+
+ if (st->auto_align_en)
+ return regmap_update_bits(st->regmap, 0x32,
+ ADF4382_EN_AUTO_ALIGN_MSK, 0xff);
+
+ ret = regmap_update_bits(st->regmap, 0x32, ADF4382_EN_AUTO_ALIGN_MSK, 0x0);
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(st->regmap, 0x34, ADF4382_PHASE_ADJ_MSK, 0xff);
+}
+
+static int adf4382_get_phase_adjust(struct adf4382_state *st, u32 *val)
+{
+ unsigned int tmp;
+ u8 phase_reg_value;
+ u64 phase_value;
+ u64 pfd_freq_hz;
+ int ret;
+
+ ret = regmap_read(st->regmap, 0x33, &tmp);
+ if (ret)
+ return ret;
+
+ phase_reg_value = tmp;
+
+ ret = adf4382_pfd_compute(st, &pfd_freq_hz);
+ if (ret) {
+ dev_err(&st->spi->dev, "PFD frequency is out of range.\n");
+ return ret;
+ }
+
+ phase_value = phase_reg_value * PERIOD_IN_DEG;
+ phase_value = phase_value * st->freq;
+ phase_value = div64_u64(phase_value, pfd_freq_hz);
+
+ phase_value = phase_value * ADF4382_PHASE_BLEED_CNST_DIV;
+ phase_value = phase_value * MS_PER_NS;
+ phase_value = div_u64(phase_value, ADF4382_PHASE_BLEED_CNST_MUL);
+ phase_value = phase_value * MILLI;
+ phase_value = div_u64(phase_value, adf4382_ci_ua[st->cp_i]);
+
+ phase_value = phase_value * NS_PER_FS;
+ phase_value = div_u64(phase_value, PERIOD_IN_DEG);
+ phase_value = div64_u64(phase_value, st->freq);
+
+ *val = (u32)phase_value;
+
+ return 0;
+}
+
+static int adf4382_set_phase_pol(struct adf4382_state *st, bool ph_pol)
+{
+ return regmap_update_bits(st->regmap, 0x32, ADF4382_PHASE_ADJ_POL_MSK,
+ FIELD_PREP(ADF4382_PHASE_ADJ_POL_MSK, ph_pol));
+}
+
+static int adf4382_get_phase_pol(struct adf4382_state *st, bool *ph_pol)
+{
+ unsigned int tmp;
+ int ret;
+
+ ret = regmap_read(st->regmap, 0x32, &tmp);
+ if (ret)
+ return ret;
+
+ *ph_pol = FIELD_GET(ADF4382_PHASE_ADJ_POL_MSK, tmp);
+
+ return 0;
+}
+
+static int adf4382_set_out_power(struct adf4382_state *st, int ch, int pwr)
+{
+ if (pwr > ADF4382_OUT_PWR_MAX)
+ pwr = ADF4382_OUT_PWR_MAX;
+
+ if (!ch) {
+ return regmap_update_bits(st->regmap, 0x29, ADF4382_CLK1_OPWR_MSK,
+ FIELD_PREP(ADF4382_CLK1_OPWR_MSK, pwr));
+ }
+
+ return regmap_update_bits(st->regmap, 0x29, ADF4382_CLK2_OPWR_MSK,
+ FIELD_PREP(ADF4382_CLK2_OPWR_MSK, pwr));
+
+};
+
+static int adf4382_get_out_power(struct adf4382_state *st, int ch, int *pwr)
+{
+ unsigned int tmp;
+ int ret;
+
+ ret = regmap_read(st->regmap, 0x29, &tmp);
+ if (ret)
+ return ret;
+
+ if (!ch)
+ *pwr = FIELD_GET(ADF4382_CLK1_OPWR_MSK, tmp);
+ else
+ *pwr = FIELD_GET(ADF4382_CLK2_OPWR_MSK, tmp);
+
+ return 0;
+}
+
+static int adf4382_set_en_chan(struct adf4382_state *st, int ch, int en)
+{
+ if (!ch) {
+ return regmap_update_bits(st->regmap, 0x2B,
+ ADF4382_PD_CLKOUT1_MSK,
+ FIELD_PREP(ADF4382_PD_CLKOUT1_MSK, !en));
+ }
+
+ return regmap_update_bits(st->regmap, 0x2B, ADF4382_PD_CLKOUT2_MSK,
+ FIELD_PREP(ADF4382_PD_CLKOUT2_MSK, !en));
+}
+
+static int adf4382_get_en_chan(struct adf4382_state *st, int ch, int *en)
+{
+ int enable;
+
+ if (!ch)
+ enable = regmap_test_bits(st->regmap, 0x2B,
+ ADF4382_PD_CLKOUT1_MSK);
+ else
+ enable = regmap_test_bits(st->regmap, 0x2B,
+ ADF4382_PD_CLKOUT2_MSK);
+ if (enable < 0)
+ return enable;
+
+ *en = !enable;
+ return 0;
+}
+
+static ssize_t adf4382_write(struct iio_dev *indio_dev, uintptr_t private,
+ const struct iio_chan_spec *chan, const char *buf,
+ size_t len)
+{
+ struct adf4382_state *st = iio_priv(indio_dev);
+ unsigned long long val;
+ int ret;
+
+ ret = kstrtoull(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ switch ((u32)private) {
+ case ADF4382_FREQ:
+ st->freq = val;
+ ret = adf4382_set_freq(st);
+ break;
+ case ADF4382_EN_AUTO_ALIGN:
+ st->auto_align_en = !!val;
+ ret = adf4382_set_phase_adjust(st, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret ? ret : len;
+}
+
+static ssize_t adf4382_read(struct iio_dev *indio_dev, uintptr_t private,
+ const struct iio_chan_spec *chan, char *buf)
+{
+ struct adf4382_state *st = iio_priv(indio_dev);
+ unsigned int val = 0;
+ u64 val_u64 = 0;
+ int ret;
+
+ switch ((u32)private) {
+ case ADF4382_FREQ:
+ ret = adf4382_get_freq(st, &val_u64);
+ if (ret)
+ return ret;
+ return sysfs_emit(buf, "%llu\n", val_u64);
+ case ADF4382_EN_AUTO_ALIGN:
+ ret = regmap_read(st->regmap, 0x32, &val);
+ if (ret)
+ return ret;
+ return sysfs_emit(buf, "%lu\n",
+ FIELD_GET(ADF4382_EN_AUTO_ALIGN_MSK, val));
+ default:
+ return -EINVAL;
+ }
+}
+
+#define _ADF4382_EXT_INFO(_name, _shared, _ident) { \
+ .name = _name, \
+ .read = adf4382_read, \
+ .write = adf4382_write, \
+ .private = _ident, \
+ .shared = _shared, \
+}
+
+static const struct iio_chan_spec_ext_info adf4382_ext_info[] = {
+ /*
+ * Usually we use IIO_CHAN_INFO_FREQUENCY, but there are
+ * values > 2^32 in order to support the entire frequency range
+ * in Hz.
+ */
+ _ADF4382_EXT_INFO("frequency", IIO_SHARED_BY_TYPE, ADF4382_FREQ),
+ _ADF4382_EXT_INFO("en_auto_align", IIO_SHARED_BY_TYPE, ADF4382_EN_AUTO_ALIGN),
+ { },
+};
+
+static int adf4382_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val,
+ int *val2,
+ long mask)
+{
+ struct adf4382_state *st = iio_priv(indio_dev);
+ bool pol;
+ u32 tmp;
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_HARDWAREGAIN:
+ ret = adf4382_get_out_power(st, chan->channel, val);
+ if (ret)
+ return ret;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_ENABLE:
+ ret = adf4382_get_en_chan(st, chan->channel, val);
+ if (ret)
+ return ret;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_PHASE:
+ ret = adf4382_get_phase_adjust(st, &tmp);
+ if (ret)
+ return ret;
+ *val = tmp;
+
+ ret = adf4382_get_phase_pol(st, &pol);
+ if (ret)
+ return ret;
+
+ if (pol)
+ *val *= -1;
+
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int adf4382_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val,
+ int val2,
+ long mask)
+{
+ struct adf4382_state *st = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_HARDWAREGAIN:
+ return adf4382_set_out_power(st, chan->channel, val);
+ case IIO_CHAN_INFO_ENABLE:
+ return adf4382_set_en_chan(st, chan->channel, val);
+ case IIO_CHAN_INFO_PHASE:
+ st->phase = val;
+
+ if (val < 0)
+ ret = adf4382_set_phase_pol(st, true);
+ else
+ ret = adf4382_set_phase_pol(st, false);
+ if (ret)
+ return ret;
+
+ return adf4382_set_phase_adjust(st, abs(val));
+ default:
+ return -EINVAL;
+ }
+}
+
+static int adf4382_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg,
+ unsigned int write_val,
+ unsigned int *read_val)
+{
+ struct adf4382_state *st = iio_priv(indio_dev);
+
+ if (read_val)
+ return regmap_read(st->regmap, reg, read_val);
+
+ return regmap_write(st->regmap, reg, write_val);
+}
+
+static const struct iio_info adf4382_info = {
+ .read_raw = &adf4382_read_raw,
+ .write_raw = &adf4382_write_raw,
+ .debugfs_reg_access = &adf4382_reg_access,
+};
+
+static const struct iio_chan_spec adf4382_channels[] = {
+ {
+ .type = IIO_ALTVOLTAGE,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_ENABLE) |
+ BIT(IIO_CHAN_INFO_HARDWAREGAIN),
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PHASE),
+ .indexed = 1,
+ .output = 1,
+ .channel = 0,
+ .ext_info = adf4382_ext_info,
+ },
+ {
+ .type = IIO_ALTVOLTAGE,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_ENABLE) |
+ BIT(IIO_CHAN_INFO_HARDWAREGAIN),
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PHASE),
+ .indexed = 1,
+ .output = 1,
+ .channel = 1,
+ .ext_info = adf4382_ext_info,
+ },
+};
+
+#ifdef CONFIG_DEBUG_FS
+static int adf4382_show_del_cnt_raw(void *arg, u64 *val)
+{
+ struct iio_dev *indio_dev = arg;
+ struct adf4382_state *st = iio_priv(indio_dev);
+ unsigned int tmp;
+ u16 del_cnt = 0;
+ int ret;
+
+ ret = regmap_read(st->regmap, 0x64, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_LSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x65, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_MSB_MSK, tmp);
+
+ *val = del_cnt;
+
+ return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adf4382_del_cnt_raw_fops,
+ adf4382_show_del_cnt_raw, NULL, "%llu\n");
+
+static int adf4382_show_bleed_pol(void *arg, u64 *val)
+{
+ struct iio_dev *indio_dev = arg;
+ struct adf4382_state *st = iio_priv(indio_dev);
+ unsigned int tmp;
+ u16 del_cnt = 0;
+ u8 bleed_pol = 0;
+ int ret;
+
+ ret = regmap_read(st->regmap, 0x64, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_LSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x65, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_MSB_MSK, tmp);
+
+ bleed_pol = FIELD_GET(ADF4382_DEL_CNT_BLEED_POL_MSK, del_cnt);
+
+ *val = bleed_pol;
+
+ return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adf4382_bleed_pol_fops,
+ adf4382_show_bleed_pol, NULL, "%llu\n");
+
+static int adf4382_show_fine_current(void *arg, u64 *val)
+{
+ struct iio_dev *indio_dev = arg;
+ struct adf4382_state *st = iio_priv(indio_dev);
+ u8 fine_current = 0;
+ unsigned int tmp;
+ u16 del_cnt = 0;
+ int ret;
+
+ ret = regmap_read(st->regmap, 0x64, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_LSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x65, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_MSB_MSK, tmp);
+
+ fine_current = FIELD_GET(ADF4382_DEL_CNT_FINE_MSK, del_cnt);
+
+ *val = fine_current;
+
+ return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adf4382_fine_current_fops,
+ adf4382_show_fine_current, NULL, "%llu\n");
+
+static int adf4382_show_coarse_current(void *arg, u64 *val)
+{
+ struct iio_dev *indio_dev = arg;
+ struct adf4382_state *st = iio_priv(indio_dev);
+ u8 coarse_current = 0;
+ unsigned int tmp;
+ u16 del_cnt = 0;
+ int ret;
+
+ ret = regmap_read(st->regmap, 0x64, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_LSB_MSK, tmp);
+
+ ret = regmap_read(st->regmap, 0x65, &tmp);
+ if (ret)
+ return ret;
+ del_cnt |= FIELD_PREP(ADF4382_DEL_CNT_MSB_MSK, tmp);
+
+ coarse_current = FIELD_GET(ADF4382_DEL_CNT_COARSE_MSK, del_cnt);
+
+ *val = coarse_current;
+
+ return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adf4382_coarse_current_fops,
+ adf4382_show_coarse_current, NULL, "%llu\n");
+
+static void adf4382_debugfs_init(struct iio_dev *indio_dev)
+{
+ struct dentry *d = iio_get_debugfs_dentry(indio_dev);
+
+ debugfs_create_file_unsafe("del_cnt_raw", 0400, d,
+ indio_dev, &adf4382_del_cnt_raw_fops);
+
+ debugfs_create_file_unsafe("bleed_pol", 0400, d,
+ indio_dev, &adf4382_bleed_pol_fops);
+
+ debugfs_create_file_unsafe("fine_current", 0400, d,
+ indio_dev, &adf4382_fine_current_fops);
+
+ debugfs_create_file_unsafe("coarse_current", 0400, d,
+ indio_dev, &adf4382_coarse_current_fops);
+}
+#else
+static void adf4382_debugfs_init(struct iio_dev *indio_dev)
+{
+}
+#endif
+
+static int adf4382_parse_device(struct adf4382_state *st)
+{
+ u32 tmp;
+ int ret;
+ int i;
+
+ ret = device_property_read_u64(&st->spi->dev, "adi,power-up-frequency",
+ &st->freq);
+ if (ret)
+ st->freq = ADF4382_RFOUT_DEFAULT;
+
+ ret = device_property_read_u32(&st->spi->dev, "adi,bleed-word",
+ &tmp);
+ if (ret)
+ st->bleed_word = 0;
+ else
+ st->bleed_word = (u16)tmp;
+
+ ret = device_property_read_u32(&st->spi->dev, "adi,charge-pump-microamp",
+ &tmp);
+ if (ret) {
+ st->cp_i = ADF4382_CP_I_DEFAULT;
+ } else {
+ i = find_closest(tmp, adf4382_ci_ua, ARRAY_SIZE(adf4382_ci_ua));
+ st->cp_i = (u8)i;
+ }
+
+ ret = device_property_read_u32(&st->spi->dev, "adi,output-power-value",
+ &tmp);
+ if (ret)
+ st->opwr_a = ADF4382_OPOWER_DEFAULT;
+ else
+ st->opwr_a = clamp_t(u8, tmp, 0, 15);
+
+ ret = device_property_read_u32(&st->spi->dev, "adi,ref-divider",
+ &tmp);
+ if (ret || !tmp)
+ st->ref_div = ADF4382_REF_DIV_DEFAULT;
+ else
+ st->ref_div = (u8)tmp;
+
+ st->spi_3wire_en = device_property_read_bool(&st->spi->dev,
+ "adi,spi-3wire-enable");
+ st->ref_doubler_en = device_property_read_bool(&st->spi->dev,
+ "adi,ref-doubler-enable");
+ st->cmos_3v3 = device_property_read_bool(&st->spi->dev, "adi,cmos-3v3");
+
+ st->clkin = devm_clk_get_enabled(&st->spi->dev, "ref_clk");
+
+ return PTR_ERR_OR_ZERO(st->clkin);
+}
+
+static int adf4382_scratchpad_check(struct adf4382_state *st)
+{
+ unsigned int val;
+ int ret;
+
+ ret = regmap_write(st->regmap, 0x0A, ADF4382_SCRATCHPAD_VAL);
+ if (ret)
+ return ret;
+
+ ret = regmap_read(st->regmap, 0x0A, &val);
+ if (ret)
+ return ret;
+
+ if (val != ADF4382_SCRATCHPAD_VAL)
+ return dev_err_probe(&st->spi->dev, -EINVAL,
+ "Scratch pad test failed please check SPI connection");
+
+ return 0;
+}
+
+static int adf4382_init(struct adf4382_state *st)
+{
+ int ret;
+ bool en = true;
+
+ ret = regmap_write(st->regmap, 0x00, ADF4382_RESET_CMD);
+ if (ret)
+ return ret;
+
+ if (st->spi->mode & SPI_3WIRE || st->spi_3wire_en)
+ en = false;
+
+ ret = regmap_write(st->regmap, 0x00,
+ FIELD_PREP(ADF4382_SDO_ACT_MSK, en) |
+ FIELD_PREP(ADF4382_SDO_ACT_R_MSK, en));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x3D,
+ FIELD_PREP(ADF4382_CMOS_OV_MSK, st->cmos_3v3));
+ if (ret)
+ return ret;
+
+ ret = adf4382_scratchpad_check(st);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x20,
+ ADF4382_EN_AUTOCAL_MSK |
+ FIELD_PREP(ADF4382_EN_RDBLR_MSK, st->ref_doubler_en) |
+ FIELD_PREP(ADF4382_R_DIV_MSK, st->ref_div));
+ if (ret)
+ return ret;
+
+ ret = regmap_write(st->regmap, 0x1f, st->cp_i);
+ if (ret)
+ return ret;
+
+ ret = regmap_multi_reg_write(st->regmap, adf4382_reg_default,
+ ARRAY_SIZE(adf4382_reg_default));
+ if (ret)
+ return ret;
+
+ st->ref_freq_hz = clk_get_rate(st->clkin);
+
+ ret = adf4382_set_out_power(st, 0, st->opwr_a);
+ if (ret)
+ return ret;
+
+ ret = adf4382_set_out_power(st, 1, st->opwr_a);
+ if (ret)
+ return ret;
+
+ return _adf4382_set_freq(st);
+}
+
+static int adf4382_freq_change(struct notifier_block *nb, unsigned long action,
+ void *data)
+{
+ struct adf4382_state *st = container_of(nb, struct adf4382_state, nb);
+ int ret;
+
+ if (action == POST_RATE_CHANGE) {
+ mutex_lock(&st->lock);
+ ret = notifier_from_errno(adf4382_init(st));
+ mutex_unlock(&st->lock);
+ return ret;
+ }
+
+ return NOTIFY_OK;
+}
+
+static int adf4382_clock_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct adf4382_state *st = to_adf4382_state(hw);
+
+ st->ref_freq_hz = parent_rate;
+ st->freq = rate * ADF4382_CLK_SCALE;
+
+ return adf4382_set_freq(st);
+}
+
+static void adf4382_clk_notifier_unreg(void *data)
+{
+ struct adf4382_state *st = data;
+
+ clk_notifier_unregister(st->clkin, &st->nb);
+}
+
+static unsigned long adf4382_clock_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct adf4382_state *st = to_adf4382_state(hw);
+ u64 freq = 0;
+ unsigned long rate;
+
+ adf4382_get_freq(st, &freq);
+ rate = DIV_ROUND_CLOSEST_ULL(freq, ADF4382_CLK_SCALE);
+
+ return rate;
+}
+
+static int adf4382_clock_enable(struct clk_hw *hw)
+{
+ struct adf4382_state *st = to_adf4382_state(hw);
+
+ return regmap_update_bits(st->regmap, 0x2B,
+ ADF4382_PD_CLKOUT1_MSK | ADF4382_PD_CLKOUT2_MSK,
+ 0x00);
+}
+
+static void adf4382_clock_disable(struct clk_hw *hw)
+{
+ struct adf4382_state *st = to_adf4382_state(hw);
+
+ regmap_update_bits(st->regmap, 0x2B,
+ ADF4382_PD_CLKOUT1_MSK | ADF4382_PD_CLKOUT2_MSK,
+ 0xff);
+}
+
+static long adf4382_clock_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct adf4382_state *st = to_adf4382_state(hw);
+ u64 freq = rate * ADF4382_CLK_SCALE;
+ u8 div_rate;
+ u64 tmp;
+
+ for (div_rate = 0; div_rate <= st->clkout_div_reg_val_max; div_rate++) {
+ tmp = (1 << div_rate) * freq;
+ if (tmp >= st->vco_min)
+ break;
+ }
+ div_rate = clamp_t(u8, div_rate, 0U, st->clkout_div_reg_val_max);
+ freq = clamp_t(u64, tmp, st->vco_min, st->vco_max);
+ freq = div_u64(freq, 1 << div_rate);
+
+ rate = DIV_ROUND_CLOSEST_ULL(freq, ADF4382_CLK_SCALE);
+ return rate;
+}
+
+static const struct clk_ops adf4382_clock_ops = {
+ .set_rate = adf4382_clock_set_rate,
+ .recalc_rate = adf4382_clock_recalc_rate,
+ .round_rate = adf4382_clock_round_rate,
+ .enable = adf4382_clock_enable,
+ .disable = adf4382_clock_disable,
+};
+
+static int adf4382_setup_clk(struct adf4382_state *st)
+{
+ struct device *dev = &st->spi->dev;
+ struct clk_init_data init;
+ struct clk *clk;
+ const char *parent_name;
+
+ if (!device_property_present(dev, "#clock-cells"))
+ return 0;
+
+ if (device_property_read_string(dev, "clock-output-names", &init.name)) {
+ init.name = devm_kasprintf(dev, GFP_KERNEL, "%s-clk",
+ fwnode_get_name(dev_fwnode(dev)));
+ if (!init.name)
+ return -ENOMEM;
+ }
+
+ parent_name = of_clk_get_parent_name(dev->of_node, 0);
+ if (!parent_name)
+ return -EINVAL;
+
+ init.ops = &adf4382_clock_ops;
+ init.parent_names = (parent_name ? &parent_name : NULL);
+ init.num_parents = (parent_name ? 1 : 0);
+
+ st->clk_hw.init = &init;
+ clk = devm_clk_register(dev, &st->clk_hw);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ st->clkout = clk;
+
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, clk);
+}
+
+static int adf4382_probe(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev;
+ struct regmap *regmap;
+ struct adf4382_state *st;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ regmap = devm_regmap_init_spi(spi, &adf4382_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ st = iio_priv(indio_dev);
+
+ indio_dev->info = &adf4382_info;
+ indio_dev->name = "adf4382";
+
+ st->regmap = regmap;
+ st->spi = spi;
+ st->phase = 0;
+
+ st->vco_max = ADF4382_VCO_FREQ_MAX;
+ st->vco_min = ADF4382_VCO_FREQ_MIN;
+ st->clkout_div_reg_val_max = ADF4382_CLKOUT_DIV_REG_VAL_MAX;
+ if (spi_get_device_id(spi)->driver_data == ADF4382A) {
+ indio_dev->name = "adf4382a";
+ st->vco_max = ADF4382A_VCO_FREQ_MAX;
+ st->vco_min = ADF4382A_VCO_FREQ_MIN;
+ st->clkout_div_reg_val_max = ADF4382A_CLKOUT_DIV_REG_VAL_MAX;
+ }
+
+ mutex_init(&st->lock);
+
+ ret = adf4382_parse_device(st);
+ if (ret)
+ return ret;
+
+ st->nb.notifier_call = adf4382_freq_change;
+ ret = clk_notifier_register(st->clkin, &st->nb);
+ if (ret)
+ return ret;
+
+ ret = devm_add_action_or_reset(&spi->dev, adf4382_clk_notifier_unreg, st);
+ if (ret)
+ return ret;
+
+ ret = adf4382_init(st);
+ if (ret)
+ return dev_err_probe(&spi->dev, ret, "adf4382 init failed\n");
+
+ ret = adf4382_setup_clk(st);
+ if (ret)
+ return ret;
+
+ if (!st->clkout) {
+ indio_dev->channels = adf4382_channels;
+ indio_dev->num_channels = ARRAY_SIZE(adf4382_channels);
+ }
+
+ ret = devm_iio_device_register(&spi->dev, indio_dev);
+ if (ret)
+ return ret;
+
+ if (IS_ENABLED(CONFIG_DEBUG_FS))
+ adf4382_debugfs_init(indio_dev);
+
+ return 0;
+}
+
+static const struct spi_device_id adf4382_id[] = {
+ { "adf4382", ADF4382 },
+ { "adf4382a", ADF4382A },
+ {},
+};
+MODULE_DEVICE_TABLE(spi, adf4382_id);
+
+static const struct of_device_id adf4382_of_match[] = {
+ { .compatible = "adi,adf4382" },
+ { .compatible = "adi,adf4382a" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, adf4382_of_match);
+
+static struct spi_driver adf4382_driver = {
+ .driver = {
+ .name = "adf4382",
+ .of_match_table = adf4382_of_match,
+ },
+ .probe = adf4382_probe,
+ .id_table = adf4382_id,
+};
+module_spi_driver(adf4382_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com>");
+MODULE_AUTHOR("Ciprian Hegbeli <ciprian.hegbeli@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADF4382");
+MODULE_LICENSE("GPL");
--
2.43.0On 14/11/2024 14:03, Ciprian Hegbeli wrote:
> The ADF4382A is a high performance, ultralow jitter, Frac-N PLL
> with integrated VCO ideally suited for LO generation for 5G applications
> or data converter clock applications. The high performance
> PLL has a figure of merit of -239 dBc/Hz, low 1/f Noise and
> high PFD frequency of 625MHz in integer mode that can achieve
> ultralow in-band noise and integrated jitter. The ADF4382A can
> generate frequencies in a fundamental octave range of 11.5 GHz to
> 21 GHz, thereby eliminating the need for sub-harmonic filters. The
> divide by 2 and 4 output dividers on the part allow frequencies to
> be generated from 5.75GHz to 10.5GHz and 2.875GHz to 5.25GHz
> respectively.
>
> Signed-off-by: Ciprian Hegbeli <ciprian.hegbeli@analog.com>
> ---
> drivers/iio/frequency/Kconfig | 11 +
> drivers/iio/frequency/Makefile | 1 +
> drivers/iio/frequency/adf4382.c | 1825 +++++++++++++++++++++++++++++++
> 3 files changed, 1837 insertions(+)
> create mode 100644 drivers/iio/frequency/adf4382.c
...
> +static int _adf4382_set_freq(struct adf4382_state *st)
> +{
> + u32 frac2_word = 0;
> + u32 mod2_word = 0;
> + u64 pfd_freq_hz;
> + u32 frac1_word;
> + u8 clkout_div;
> + u32 read_val;
> + u8 dclk_div1;
> + u8 int_mode;
> + u8 en_bleed;
> + u8 ldwin_pw;
> + u16 n_int;
> + u8 div1;
> + u64 tmp;
> + u64 vco;
> + int ret;
> + u8 var;
> +
> + ret = adf4382_pfd_compute(st, &pfd_freq_hz);
> + if (ret) {
> + dev_err(&st->spi->dev, "PFD frequency is out of range.\n");
> + return ret;
> + }
> +
> + for (clkout_div = 0; clkout_div <= st->clkout_div_reg_val_max; clkout_div++) {
> + tmp = (1 << clkout_div) * st->freq;
> + if (tmp < st->vco_min || tmp > st->vco_max)
> + continue;
> +
> + vco = tmp;
> + break;
> + }
> +
(At least) LLVM/Clang complains about vco for a good reason: you may use
it without proper initialization if the for loop does not assign any
value. I guess you meant it to be initialized to zero in the declaration.
> + if (vco == 0) {
> + dev_err(&st->spi->dev, "Output frequency is out of range.\n");
> + ret = -EINVAL;
> + return ret;
> + }
> +
Best regards,
Javier Carrasco
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