iio: adc: ad9361: Add dts attribute adi,agc-dig-sat-ovrg-enable

Applies to the fast AGC and full gain table. When clear (default), digital saturation does not cause a gain decrease. When set, digital saturation will cause a gain decrease. Signed-off-by: Michael Hennerich <[email protected]>
analogdevicesinc · Jan 10, 2024 · 3031a06 · 3031a06
1 parent 8d3d007
commit 3031a06
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/drivers/iio/adc/ad9361.c b/drivers/iio/adc/ad9361.c
@@ -3374,9 +3374,8 @@ static int ad9361_gc_setup(struct ad9361_rf_phy *phy, struct gain_control *ctrl)
 	/* AGC */
 
 	tmp1 = reg = clamp_t(u8, ctrl->agc_inner_thresh_high, 0U, 127U);
-	ad9361_spi_writef(spi, REG_AGC_LOCK_LEVEL,
-			  AGC_LOCK_LEVEL_FAST_AGC_INNER_HIGH_THRESH_SLOW(~0),
-			  reg);
+	ad9361_spi_write(spi, REG_AGC_LOCK_LEVEL,
+			 reg | ((ctrl->agc_dig_sat_ovrg_en << 7) & ENABLE_DIG_SAT_OVRG));
 
 	tmp2 = reg = clamp_t(u8, ctrl->agc_inner_thresh_low, 0U, 127U);
 	reg |= (ctrl->adc_lmt_small_overload_prevent_gain_inc ?
@@ -8857,6 +8856,8 @@ static struct ad9361_phy_platform_data
 			  &pdata->gain_ctrl.agc_outer_thresh_low);
 	ad9361_of_get_u32(iodev, np, "adi,agc-outer-thresh-low-inc-steps", 2,
 			  &pdata->gain_ctrl.agc_outer_thresh_low_inc_steps);
+	ad9361_of_get_bool(iodev, np, "adi,agc-dig-sat-ovrg-enable",
+			   &pdata->gain_ctrl.agc_dig_sat_ovrg_en);
 	ad9361_of_get_u32(iodev, np, "adi,agc-adc-small-overload-exceed-counter", 10,
 			  &pdata->gain_ctrl.adc_small_overload_exceed_counter);
 	ad9361_of_get_u32(iodev, np, "adi,agc-adc-large-overload-exceed-counter", 10,

diff --git a/drivers/iio/adc/ad9361_private.h b/drivers/iio/adc/ad9361_private.h
@@ -103,6 +103,7 @@ struct gain_control {
 	u8 adc_large_overload_inc_steps; /* 0..15, 0x106 */
 
 	bool adc_lmt_small_overload_prevent_gain_inc; /* 0x120 */
+	bool agc_dig_sat_ovrg_en;  /* 0x101:7 */
 
 	u8 lmt_overload_large_exceed_counter; /* 0..15, 0x121 */
 	u8 lmt_overload_small_exceed_counter; /* 0..15, 0x121 */