qcacmn: Add definitions for Spectral linear bin scaling
Add definitions for Spectral linear bin scaling, including conversion functions, RF parameter definitions, and hardware generation specifiers. CRs-Fixed: 2294176 Change-Id: I6e1eb2ce3ec19d8734facb88c6329fe0026ecce0
Esse commit está contido em:
Krishna Rao
@@ -85,13 +85,26 @@ struct spectral_ioctl_params {
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uint16_t spectral_pri;
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};
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/**
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* spectral_cap_hw_gen: Definitions for the Spectral hardware generation.
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* This corresponds to definitions in qca_wlan_vendor_spectral_scan_cap_hw_gen.
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* @SPECTRAL_CAP_HW_GEN_1: Generation 1
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* @SPECTRAL_CAP_HW_GEN_2: Generation 2
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* @SPECTRAL_CAP_HW_GEN_3: Generation 3
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*/
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enum spectral_cap_hw_gen {
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SPECTRAL_CAP_HW_GEN_1 = 0,
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SPECTRAL_CAP_HW_GEN_2 = 1,
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SPECTRAL_CAP_HW_GEN_3 = 2,
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};
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/**
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* struct spectral_caps - Spectral capabilities structure
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* @phydiag_cap: Phydiag capability
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* @radar_cap: Radar detection capability
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* @spectral_cap: Spectral capability
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* @advncd_spectral_cap: Advanced spectral capability
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* @hw_gen: Spectral hw generation
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* @hw_gen: Spectral hw generation as defined in spectral_cap_hw_gen
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*/
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struct spectral_caps {
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uint8_t phydiag_cap;
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@@ -21,6 +21,10 @@
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#include "wlan_dfs_ioctl.h"
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#include <spectral_ioctl.h>
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#ifndef __KERNEL__
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#include <math.h>
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#endif /* __KERNEL__ */
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#ifndef _WLAN_SPECTRAL_PUBLIC_STRUCTS_H_
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#define _WLAN_SPECTRAL_PUBLIC_STRUCTS_H_
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@@ -103,6 +107,44 @@
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#define SPECTRAL_SCAN_SHORT_REPORT_DEFAULT (1)
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#define SPECTRAL_SCAN_FFT_PERIOD_DEFAULT (1)
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/*
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* Definitions to help in scaling of gen3 linear format Spectral bins to values
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* similar to those from gen2 chipsets.
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*/
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/*
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* Max gain for QCA9984. Since this chipset is a prime representative of gen2
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* chipsets, it is chosen for this value.
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*/
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#define SPECTRAL_QCA9984_MAX_GAIN (78)
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/* Temporary section for hard-coded values. These need to come from FW. */
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/* Max gain for IPQ8074 */
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#define SPECTRAL_IPQ8074_DEFAULT_MAX_GAIN_HARDCODE (62)
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/*
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* Section for values needing tuning per customer platform. These too may need
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* to come from FW. To be considered as hard-coded for now.
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*/
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/*
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* If customers have a different gain line up than QCA reference designs for
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* IPQ8074 and/or QCA9984, they may have to tune the low level threshold and
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* the RSSI threshold.
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*/
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#define SPECTRAL_SCALING_LOW_LEVEL_OFFSET (7)
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#define SPECTRAL_SCALING_RSSI_THRESH (5)
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/*
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* If customers set the AGC backoff differently, they may have to tune the high
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* level threshold.
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*/
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#define SPECTRAL_SCALING_HIGH_LEVEL_OFFSET (5)
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/* End of section for values needing fine tuning. */
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/* End of temporary section for hard-coded values */
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/**
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* enum wlan_cfg80211_spectral_vendorcmd_handler_idx - Indices to cfg80211
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* spectral vendor command handlers
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@@ -484,6 +526,90 @@ struct spectral_nl_cb {
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int (*send_nl_bcast)(struct wlan_objmgr_pdev *pdev);
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int (*send_nl_unicast)(struct wlan_objmgr_pdev *pdev);
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};
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#ifndef __KERNEL__
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static inline int16_t
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spectral_pwfactor_max(int16_t pwfactor1,
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int16_t pwfactor2)
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{
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return ((pwfactor1 > pwfactor2) ? pwfactor1 : pwfactor2);
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}
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/**
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* get_spectral_scale_rssi_corr() - Compute RSSI correction factor for scaling
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* @agc_total_gain_db: AGC total gain in dB steps
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* @gen3_defmaxgain: Default max gain value of the gen III chipset
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* @gen2_maxgain: Max gain value used by the reference gen II chipset
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* @lowlevel_offset: Low level offset for scaling
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* @inband_pwr: In band power in dB steps
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* @rssi_thr: RSSI threshold for scaling
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*
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* Helper function to compute RSSI correction factor for Gen III linear format
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* Spectral scaling. It is the responsibility of the caller to ensure that
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* correct values are passed.
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*
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* Return: RSSI correction factor
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*/
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static inline int16_t
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get_spectral_scale_rssi_corr(u_int8_t agc_total_gain_db,
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u_int8_t gen3_defmaxgain, u_int8_t gen2_maxgain,
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int16_t lowlevel_offset, int16_t inband_pwr,
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int16_t rssi_thr)
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{
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return ((agc_total_gain_db < gen3_defmaxgain) ?
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(gen2_maxgain - gen3_defmaxgain + lowlevel_offset) :
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spectral_pwfactor_max((inband_pwr - rssi_thr), 0));
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}
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/**
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* spectral_scale_linear_to_gen2() - Scale linear bin value to gen II equivalent
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* @gen3_binmag: Captured FFT bin value from the Spectral Search FFT report
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* generated by the Gen III chipset
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* @gen2_maxgain: Max gain value used by the reference gen II chipset
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* @gen3_defmaxgain: Default max gain value of the gen III chipset
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* @lowlevel_offset: Low level offset for scaling
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* @inband_pwr: In band power in dB steps
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* @rssi_thr: RSSI threshold for scaling
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* @agc_total_gain_db: AGC total gain in dB steps
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* @highlevel_offset: High level offset for scaling
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* @gen2_bin_scale: Bin scale value used on reference gen II chipset
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* @gen3_bin_scale: Bin scale value used on gen III chipset
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*
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* Helper function to scale a given gen III linear format bin value into an
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* approximately equivalent gen II value. The scaled value can possibly be
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* higher than 8 bits. If the caller is incapable of handling values larger
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* than 8 bits, the caller can saturate the value at 255. This function does not
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* carry out this saturation for the sake of flexibility so that callers
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* interested in the larger values can avail of this. Also note it is the
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* responsibility of the caller to ensure that correct values are passed.
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*
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* Return: Scaled bin value
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*/
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static inline u_int32_t
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spectral_scale_linear_to_gen2(u_int8_t gen3_binmag,
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u_int8_t gen2_maxgain, u_int8_t gen3_defmaxgain,
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int16_t lowlevel_offset, int16_t inband_pwr,
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int16_t rssi_thr, u_int8_t agc_total_gain_db,
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int16_t highlevel_offset, u_int8_t gen2_bin_scale,
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u_int8_t gen3_bin_scale)
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{
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return (gen3_binmag *
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sqrt(pow(10, (((double)spectral_pwfactor_max(gen2_maxgain -
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gen3_defmaxgain + lowlevel_offset -
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get_spectral_scale_rssi_corr(agc_total_gain_db,
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gen3_defmaxgain,
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gen2_maxgain,
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lowlevel_offset,
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inband_pwr,
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rssi_thr),
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(agc_total_gain_db < gen3_defmaxgain) *
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highlevel_offset)) / 10))) *
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pow(2, (gen3_bin_scale - gen2_bin_scale)));
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}
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#endif /* __KERNEL__ */
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#ifdef WIN32
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#pragma pack(pop, spectral)
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#endif
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