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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /include/linux/iio/frequency
Initial import
Diffstat (limited to 'include/linux/iio/frequency')
-rw-r--r--include/linux/iio/frequency/ad9523.h195
-rw-r--r--include/linux/iio/frequency/adf4350.h128
2 files changed, 323 insertions, 0 deletions
diff --git a/include/linux/iio/frequency/ad9523.h b/include/linux/iio/frequency/ad9523.h
new file mode 100644
index 000000000..12ce3ee42
--- /dev/null
+++ b/include/linux/iio/frequency/ad9523.h
@@ -0,0 +1,195 @@
+/*
+ * AD9523 SPI Low Jitter Clock Generator
+ *
+ * Copyright 2012 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef IIO_FREQUENCY_AD9523_H_
+#define IIO_FREQUENCY_AD9523_H_
+
+enum outp_drv_mode {
+ TRISTATE,
+ LVPECL_8mA,
+ LVDS_4mA,
+ LVDS_7mA,
+ HSTL0_16mA,
+ HSTL1_8mA,
+ CMOS_CONF1,
+ CMOS_CONF2,
+ CMOS_CONF3,
+ CMOS_CONF4,
+ CMOS_CONF5,
+ CMOS_CONF6,
+ CMOS_CONF7,
+ CMOS_CONF8,
+ CMOS_CONF9
+};
+
+enum ref_sel_mode {
+ NONEREVERTIVE_STAY_ON_REFB,
+ REVERT_TO_REFA,
+ SELECT_REFA,
+ SELECT_REFB,
+ EXT_REF_SEL
+};
+
+/**
+ * struct ad9523_channel_spec - Output channel configuration
+ *
+ * @channel_num: Output channel number.
+ * @divider_output_invert_en: Invert the polarity of the output clock.
+ * @sync_ignore_en: Ignore chip-level SYNC signal.
+ * @low_power_mode_en: Reduce power used in the differential output modes.
+ * @use_alt_clock_src: Channel divider uses alternative clk source.
+ * @output_dis: Disables, powers down the entire channel.
+ * @driver_mode: Output driver mode (logic level family).
+ * @divider_phase: Divider initial phase after a SYNC. Range 0..63
+ LSB = 1/2 of a period of the divider input clock.
+ * @channel_divider: 10-bit channel divider.
+ * @extended_name: Optional descriptive channel name.
+ */
+
+struct ad9523_channel_spec {
+ unsigned channel_num;
+ bool divider_output_invert_en;
+ bool sync_ignore_en;
+ bool low_power_mode_en;
+ /* CH0..CH3 VCXO, CH4..CH9 VCO2 */
+ bool use_alt_clock_src;
+ bool output_dis;
+ enum outp_drv_mode driver_mode;
+ unsigned char divider_phase;
+ unsigned short channel_divider;
+ char extended_name[16];
+};
+
+enum pll1_rzero_resistor {
+ RZERO_883_OHM,
+ RZERO_677_OHM,
+ RZERO_341_OHM,
+ RZERO_135_OHM,
+ RZERO_10_OHM,
+ RZERO_USE_EXT_RES = 8,
+};
+
+enum rpole2_resistor {
+ RPOLE2_900_OHM,
+ RPOLE2_450_OHM,
+ RPOLE2_300_OHM,
+ RPOLE2_225_OHM,
+};
+
+enum rzero_resistor {
+ RZERO_3250_OHM,
+ RZERO_2750_OHM,
+ RZERO_2250_OHM,
+ RZERO_2100_OHM,
+ RZERO_3000_OHM,
+ RZERO_2500_OHM,
+ RZERO_2000_OHM,
+ RZERO_1850_OHM,
+};
+
+enum cpole1_capacitor {
+ CPOLE1_0_PF,
+ CPOLE1_8_PF,
+ CPOLE1_16_PF,
+ CPOLE1_24_PF,
+ _CPOLE1_24_PF, /* place holder */
+ CPOLE1_32_PF,
+ CPOLE1_40_PF,
+ CPOLE1_48_PF,
+};
+
+/**
+ * struct ad9523_platform_data - platform specific information
+ *
+ * @vcxo_freq: External VCXO frequency in Hz
+ * @refa_diff_rcv_en: REFA differential/single-ended input selection.
+ * @refb_diff_rcv_en: REFB differential/single-ended input selection.
+ * @zd_in_diff_en: Zero Delay differential/single-ended input selection.
+ * @osc_in_diff_en: OSC differential/ single-ended input selection.
+ * @refa_cmos_neg_inp_en: REFA single-ended neg./pos. input enable.
+ * @refb_cmos_neg_inp_en: REFB single-ended neg./pos. input enable.
+ * @zd_in_cmos_neg_inp_en: Zero Delay single-ended neg./pos. input enable.
+ * @osc_in_cmos_neg_inp_en: OSC single-ended neg./pos. input enable.
+ * @refa_r_div: PLL1 10-bit REFA R divider.
+ * @refb_r_div: PLL1 10-bit REFB R divider.
+ * @pll1_feedback_div: PLL1 10-bit Feedback N divider.
+ * @pll1_charge_pump_current_nA: Magnitude of PLL1 charge pump current (nA).
+ * @zero_delay_mode_internal_en: Internal, external Zero Delay mode selection.
+ * @osc_in_feedback_en: PLL1 feedback path, local feedback from
+ * the OSC_IN receiver or zero delay mode
+ * @pll1_loop_filter_rzero: PLL1 Loop Filter Zero Resistor selection.
+ * @ref_mode: Reference selection mode.
+ * @pll2_charge_pump_current_nA: Magnitude of PLL2 charge pump current (nA).
+ * @pll2_ndiv_a_cnt: PLL2 Feedback N-divider, A Counter, range 0..4.
+ * @pll2_ndiv_b_cnt: PLL2 Feedback N-divider, B Counter, range 0..63.
+ * @pll2_freq_doubler_en: PLL2 frequency doubler enable.
+ * @pll2_r2_div: PLL2 R2 divider, range 0..31.
+ * @pll2_vco_diff_m1: VCO1 divider, range 3..5.
+ * @pll2_vco_diff_m2: VCO2 divider, range 3..5.
+ * @rpole2: PLL2 loop filter Rpole resistor value.
+ * @rzero: PLL2 loop filter Rzero resistor value.
+ * @cpole1: PLL2 loop filter Cpole capacitor value.
+ * @rzero_bypass_en: PLL2 loop filter Rzero bypass enable.
+ * @num_channels: Array size of struct ad9523_channel_spec.
+ * @channels: Pointer to channel array.
+ * @name: Optional alternative iio device name.
+ */
+
+struct ad9523_platform_data {
+ unsigned long vcxo_freq;
+
+ /* Differential/ Single-Ended Input Configuration */
+ bool refa_diff_rcv_en;
+ bool refb_diff_rcv_en;
+ bool zd_in_diff_en;
+ bool osc_in_diff_en;
+
+ /*
+ * Valid if differential input disabled
+ * if false defaults to pos input
+ */
+ bool refa_cmos_neg_inp_en;
+ bool refb_cmos_neg_inp_en;
+ bool zd_in_cmos_neg_inp_en;
+ bool osc_in_cmos_neg_inp_en;
+
+ /* PLL1 Setting */
+ unsigned short refa_r_div;
+ unsigned short refb_r_div;
+ unsigned short pll1_feedback_div;
+ unsigned short pll1_charge_pump_current_nA;
+ bool zero_delay_mode_internal_en;
+ bool osc_in_feedback_en;
+ enum pll1_rzero_resistor pll1_loop_filter_rzero;
+
+ /* Reference */
+ enum ref_sel_mode ref_mode;
+
+ /* PLL2 Setting */
+ unsigned int pll2_charge_pump_current_nA;
+ unsigned char pll2_ndiv_a_cnt;
+ unsigned char pll2_ndiv_b_cnt;
+ bool pll2_freq_doubler_en;
+ unsigned char pll2_r2_div;
+ unsigned char pll2_vco_diff_m1; /* 3..5 */
+ unsigned char pll2_vco_diff_m2; /* 3..5 */
+
+ /* Loop Filter PLL2 */
+ enum rpole2_resistor rpole2;
+ enum rzero_resistor rzero;
+ enum cpole1_capacitor cpole1;
+ bool rzero_bypass_en;
+
+ /* Output Channel Configuration */
+ int num_channels;
+ struct ad9523_channel_spec *channels;
+
+ char name[SPI_NAME_SIZE];
+};
+
+#endif /* IIO_FREQUENCY_AD9523_H_ */
diff --git a/include/linux/iio/frequency/adf4350.h b/include/linux/iio/frequency/adf4350.h
new file mode 100644
index 000000000..ffd8c8f90
--- /dev/null
+++ b/include/linux/iio/frequency/adf4350.h
@@ -0,0 +1,128 @@
+/*
+ * ADF4350/ADF4351 SPI PLL driver
+ *
+ * Copyright 2012-2013 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef IIO_PLL_ADF4350_H_
+#define IIO_PLL_ADF4350_H_
+
+/* Registers */
+#define ADF4350_REG0 0
+#define ADF4350_REG1 1
+#define ADF4350_REG2 2
+#define ADF4350_REG3 3
+#define ADF4350_REG4 4
+#define ADF4350_REG5 5
+
+/* REG0 Bit Definitions */
+#define ADF4350_REG0_FRACT(x) (((x) & 0xFFF) << 3)
+#define ADF4350_REG0_INT(x) (((x) & 0xFFFF) << 15)
+
+/* REG1 Bit Definitions */
+#define ADF4350_REG1_MOD(x) (((x) & 0xFFF) << 3)
+#define ADF4350_REG1_PHASE(x) (((x) & 0xFFF) << 15)
+#define ADF4350_REG1_PRESCALER (1 << 27)
+
+/* REG2 Bit Definitions */
+#define ADF4350_REG2_COUNTER_RESET_EN (1 << 3)
+#define ADF4350_REG2_CP_THREESTATE_EN (1 << 4)
+#define ADF4350_REG2_POWER_DOWN_EN (1 << 5)
+#define ADF4350_REG2_PD_POLARITY_POS (1 << 6)
+#define ADF4350_REG2_LDP_6ns (1 << 7)
+#define ADF4350_REG2_LDP_10ns (0 << 7)
+#define ADF4350_REG2_LDF_FRACT_N (0 << 8)
+#define ADF4350_REG2_LDF_INT_N (1 << 8)
+#define ADF4350_REG2_CHARGE_PUMP_CURR_uA(x) (((((x)-312) / 312) & 0xF) << 9)
+#define ADF4350_REG2_DOUBLE_BUFF_EN (1 << 13)
+#define ADF4350_REG2_10BIT_R_CNT(x) ((x) << 14)
+#define ADF4350_REG2_RDIV2_EN (1 << 24)
+#define ADF4350_REG2_RMULT2_EN (1 << 25)
+#define ADF4350_REG2_MUXOUT(x) ((x) << 26)
+#define ADF4350_REG2_NOISE_MODE(x) (((unsigned)(x)) << 29)
+#define ADF4350_MUXOUT_THREESTATE 0
+#define ADF4350_MUXOUT_DVDD 1
+#define ADF4350_MUXOUT_GND 2
+#define ADF4350_MUXOUT_R_DIV_OUT 3
+#define ADF4350_MUXOUT_N_DIV_OUT 4
+#define ADF4350_MUXOUT_ANALOG_LOCK_DETECT 5
+#define ADF4350_MUXOUT_DIGITAL_LOCK_DETECT 6
+
+/* REG3 Bit Definitions */
+#define ADF4350_REG3_12BIT_CLKDIV(x) ((x) << 3)
+#define ADF4350_REG3_12BIT_CLKDIV_MODE(x) ((x) << 16)
+#define ADF4350_REG3_12BIT_CSR_EN (1 << 18)
+#define ADF4351_REG3_CHARGE_CANCELLATION_EN (1 << 21)
+#define ADF4351_REG3_ANTI_BACKLASH_3ns_EN (1 << 22)
+#define ADF4351_REG3_BAND_SEL_CLOCK_MODE_HIGH (1 << 23)
+
+/* REG4 Bit Definitions */
+#define ADF4350_REG4_OUTPUT_PWR(x) ((x) << 3)
+#define ADF4350_REG4_RF_OUT_EN (1 << 5)
+#define ADF4350_REG4_AUX_OUTPUT_PWR(x) ((x) << 6)
+#define ADF4350_REG4_AUX_OUTPUT_EN (1 << 8)
+#define ADF4350_REG4_AUX_OUTPUT_FUND (1 << 9)
+#define ADF4350_REG4_AUX_OUTPUT_DIV (0 << 9)
+#define ADF4350_REG4_MUTE_TILL_LOCK_EN (1 << 10)
+#define ADF4350_REG4_VCO_PWRDOWN_EN (1 << 11)
+#define ADF4350_REG4_8BIT_BAND_SEL_CLKDIV(x) ((x) << 12)
+#define ADF4350_REG4_RF_DIV_SEL(x) ((x) << 20)
+#define ADF4350_REG4_FEEDBACK_DIVIDED (0 << 23)
+#define ADF4350_REG4_FEEDBACK_FUND (1 << 23)
+
+/* REG5 Bit Definitions */
+#define ADF4350_REG5_LD_PIN_MODE_LOW (0 << 22)
+#define ADF4350_REG5_LD_PIN_MODE_DIGITAL (1 << 22)
+#define ADF4350_REG5_LD_PIN_MODE_HIGH (3 << 22)
+
+/* Specifications */
+#define ADF4350_MAX_OUT_FREQ 4400000000ULL /* Hz */
+#define ADF4350_MIN_OUT_FREQ 137500000 /* Hz */
+#define ADF4351_MIN_OUT_FREQ 34375000 /* Hz */
+#define ADF4350_MIN_VCO_FREQ 2200000000ULL /* Hz */
+#define ADF4350_MAX_FREQ_45_PRESC 3000000000ULL /* Hz */
+#define ADF4350_MAX_FREQ_PFD 32000000 /* Hz */
+#define ADF4350_MAX_BANDSEL_CLK 125000 /* Hz */
+#define ADF4350_MAX_FREQ_REFIN 250000000 /* Hz */
+#define ADF4350_MAX_MODULUS 4095
+#define ADF4350_MAX_R_CNT 1023
+
+
+/**
+ * struct adf4350_platform_data - platform specific information
+ * @name: Optional device name.
+ * @clkin: REFin frequency in Hz.
+ * @channel_spacing: Channel spacing in Hz (influences MODULUS).
+ * @power_up_frequency: Optional, If set in Hz the PLL tunes to the desired
+ * frequency on probe.
+ * @ref_div_factor: Optional, if set the driver skips dynamic calculation
+ * and uses this default value instead.
+ * @ref_doubler_en: Enables reference doubler.
+ * @ref_div2_en: Enables reference divider.
+ * @r2_user_settings: User defined settings for ADF4350/1 REGISTER_2.
+ * @r3_user_settings: User defined settings for ADF4350/1 REGISTER_3.
+ * @r4_user_settings: User defined settings for ADF4350/1 REGISTER_4.
+ * @gpio_lock_detect: Optional, if set with a valid GPIO number,
+ * pll lock state is tested upon read.
+ * If not used - set to -1.
+ */
+
+struct adf4350_platform_data {
+ char name[32];
+ unsigned long clkin;
+ unsigned long channel_spacing;
+ unsigned long long power_up_frequency;
+
+ unsigned short ref_div_factor; /* 10-bit R counter */
+ bool ref_doubler_en;
+ bool ref_div2_en;
+
+ unsigned r2_user_settings;
+ unsigned r3_user_settings;
+ unsigned r4_user_settings;
+ int gpio_lock_detect;
+};
+
+#endif /* IIO_PLL_ADF4350_H_ */