Merge "asoc: wcd939x: Add xtalk cancellation gain updates"
This commit is contained in:
qctecmdr
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Gerrit - the friendly Code Review server
Gerrit - the friendly Code Review server
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f481fa25f5
@@ -43,6 +43,12 @@ enum {
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TX_HDR_MAX,
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};
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enum xtalk_mode {
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XTALK_NONE = 0,
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XTALK_DIGITAL = 1,
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XTALK_ANALOG = 2
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};
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extern struct regmap_config wcd939x_regmap_config;
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struct comp_coeff_val {
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@@ -151,11 +157,36 @@ struct wcd939x_micbias_setting {
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u8 bias1_cfilt_sel;
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};
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struct wcd939x_xtalk_params {
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u32 r_gnd_int_fet_mohms;
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u32 r_gnd_par_route1_mohms;
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u32 r_gnd_par_route2_mohms;
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u32 r_gnd_ext_fet_mohms;
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u32 r_conn_par_load_neg_mohms;
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u32 r_aud_int_fet_l_mohms;
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u32 r_aud_int_fet_r_mohms;
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u32 r_aud_ext_fet_l_mohms;
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u32 r_aud_ext_fet_r_mohms;
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u32 r_conn_par_load_pos_l_mohms;
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u32 r_conn_par_load_pos_r_mohms;
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u32 r_gnd_res_tot_mohms;
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u32 r_aud_res_tot_l_mohms;
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u32 r_aud_res_tot_r_mohms;
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u32 zl;
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u32 zr;
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u8 scale_l;
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u8 alpha_l;
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u8 scale_r;
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u8 alpha_r;
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enum xtalk_mode xtalk_config;
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};
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struct wcd939x_pdata {
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struct device_node *rst_np;
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struct device_node *rx_slave;
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struct device_node *tx_slave;
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struct wcd939x_micbias_setting micbias;
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struct wcd939x_xtalk_params xtalk;
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struct cdc_regulator *regulator;
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int num_supplies;
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@@ -53,6 +53,15 @@
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#define COMP_MAX_COEFF 25
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#define HPH_MODE_MAX 4
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#define FLOAT_TO_FIXED (1 << 12)
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#define MAX_XTALK_SCALE 31
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#define MAX_XTALK_ALPHA 255
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#define MAX_RLOAD_OHMS 1000
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#define MAX_IMPEDANCE_MOHMS 20000
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#define OHMS_TO_MILLIOHMS 1000
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#define XTALK_L_CH_NUM 0
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#define XTALK_R_CH_NUM 1
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#define DAPM_MICBIAS1_STANDALONE "MIC BIAS1 Standalone"
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#define DAPM_MICBIAS2_STANDALONE "MIC BIAS2 Standalone"
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#define DAPM_MICBIAS3_STANDALONE "MIC BIAS3 Standalone"
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@@ -957,9 +966,177 @@ static int wcd939x_config_compander(struct snd_soc_component *component,
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return 0;
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}
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static u8 get_xtalk_scale(u32 gain)
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{
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u8 i;
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int target = FLOAT_TO_FIXED / ((int) gain);
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int residue = target;
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for (i = 0; i <= MAX_XTALK_SCALE; i++) {
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residue = target - (1 << ((int)((u32) i)));
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if (residue <= 0)
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return i;
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}
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return MAX_XTALK_SCALE;
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}
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static u8 get_xtalk_alpha(u32 gain, u8 scale)
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{
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u32 two_exp_scale = 1 << ((u32) scale);
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u32 round_offset = FLOAT_TO_FIXED / 2;
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u32 alpha = (((gain * two_exp_scale - FLOAT_TO_FIXED) * 255) + round_offset)
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/ FLOAT_TO_FIXED;
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return (alpha <= MAX_XTALK_ALPHA) ? ((u8) alpha) : MAX_XTALK_ALPHA;
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}
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static u32 get_r_gnd_res_tot_mohms(u32 r_gnd_int_fet_mohms, u32 r_gnd_par_route1_mohms,
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u32 r_gnd_par_route2_mohms, u32 r_gnd_ext_fet_mohms,
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u32 r_conn_par_load_neg_mohms)
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{
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return r_gnd_int_fet_mohms + r_gnd_par_route1_mohms + r_gnd_par_route2_mohms +
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r_gnd_ext_fet_mohms + r_conn_par_load_neg_mohms;
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}
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static u32 get_r_aud_res_tot_mohms(u32 r_aud_int_fet_mohms, u32 r_aud_ext_fet_mohms,
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u32 r_conn_par_load_pos_mohms)
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{
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return r_aud_int_fet_mohms + r_aud_ext_fet_mohms + r_conn_par_load_pos_mohms;
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}
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static u32 get_v_common_gnd_factor(u32 r_gnd_res_tot_mohms, u32 r_load_mohms,
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u32 r_aud_res_tot_mohms)
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{
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return FLOAT_TO_FIXED * r_gnd_res_tot_mohms /
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(r_load_mohms + r_aud_res_tot_mohms + r_gnd_res_tot_mohms);
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}
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static u32 get_v_feedback_tap_factor(u32 r_gnd_int_fet_mohms, u32 r_gnd_par_route1_mohms,
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u32 r_load_mohms, u32 r_gnd_res_tot_mohms,
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u32 r_aud_res_tot_mohms)
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{
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return FLOAT_TO_FIXED * (r_gnd_int_fet_mohms + r_gnd_par_route1_mohms) /
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(r_load_mohms + r_gnd_res_tot_mohms + r_aud_res_tot_mohms);
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}
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static u32 get_v_feedback_tap_factor_analog(u32 r_conn_par_load_neg_mohms, u32 r_load_mohms,
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u32 r_gnd_res_tot_mohms, u32 r_aud_res_tot_mohms)
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{
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return FLOAT_TO_FIXED * (r_gnd_res_tot_mohms - r_conn_par_load_neg_mohms) /
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(r_load_mohms + r_gnd_res_tot_mohms + r_aud_res_tot_mohms);
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}
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static u32 get_xtalk_gain(u32 v_common_gnd_factor, u32 v_feedback_tap_factor)
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{
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return v_common_gnd_factor - v_feedback_tap_factor;
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}
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static void get_xtalk_scale_and_alpha(struct snd_soc_component *component, int xtalk_indx,
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u8 *scale, u8 *alpha)
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{
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u32 r_aud_int_fet_mohms = 0, r_aud_ext_fet_mohms = 0, r_conn_par_load_pos_mohms = 0,
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r_load_mohms = 32360, r_aud_res_tot_mohms = 0, v_common_gnd_factor = 0,
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v_feedback_tap_factor = 0, xtalk_gain = 0, zl = 0, zr = 0;
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struct wcd939x_priv *wcd939x = NULL;
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struct wcd939x_pdata *pdata = NULL;
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if ((xtalk_indx != XTALK_L_CH_NUM) && (xtalk_indx != XTALK_R_CH_NUM))
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goto err_data;
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wcd939x = snd_soc_component_get_drvdata(component);
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if (!wcd939x->dev)
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goto err_data;
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pdata = dev_get_platdata(wcd939x->dev);
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if (pdata->xtalk.xtalk_config == XTALK_NONE)
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goto err_data;
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/* Get headphone impedance for r_load */
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wcd939x_mbhc_get_impedance(wcd939x->mbhc, &zl, &zr);
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if (xtalk_indx == XTALK_L_CH_NUM) {
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if (zl > MAX_RLOAD_OHMS || zl == 0) {
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pdata->xtalk.scale_l = MAX_XTALK_SCALE;
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pdata->xtalk.alpha_l = MAX_XTALK_ALPHA;
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pdata->xtalk.zl = 0;
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goto err_data;
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}
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/* Use cached alpha and scale for the same headphone load */
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if (zl == pdata->xtalk.zl) {
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*alpha = pdata->xtalk.alpha_l;
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*scale = pdata->xtalk.scale_l;
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return;
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}
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pdata->xtalk.zl = zl;
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} else {
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if (zr > MAX_RLOAD_OHMS || zr == 0) {
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pdata->xtalk.scale_r = MAX_XTALK_SCALE;
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pdata->xtalk.alpha_r = MAX_XTALK_ALPHA;
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pdata->xtalk.zr = 0;
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goto err_data;
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}
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/* Use cached alpha and scale for the same headphone load */
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if (zr == pdata->xtalk.zr) {
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*alpha = pdata->xtalk.alpha_r;
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*scale = pdata->xtalk.scale_r;
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return;
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}
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pdata->xtalk.zr = zr;
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}
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/* Channel-dependent impedance parameters */
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if (xtalk_indx == XTALK_L_CH_NUM) {
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r_aud_int_fet_mohms = pdata->xtalk.r_aud_int_fet_l_mohms;
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r_aud_ext_fet_mohms = pdata->xtalk.r_aud_ext_fet_l_mohms;
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r_conn_par_load_pos_mohms = pdata->xtalk.r_conn_par_load_pos_l_mohms;
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r_aud_res_tot_mohms = pdata->xtalk.r_aud_res_tot_l_mohms;
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r_load_mohms = pdata->xtalk.zl * OHMS_TO_MILLIOHMS;
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} else {
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r_aud_int_fet_mohms = pdata->xtalk.r_aud_int_fet_r_mohms;
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r_aud_ext_fet_mohms = pdata->xtalk.r_aud_ext_fet_r_mohms;
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r_conn_par_load_pos_mohms = pdata->xtalk.r_conn_par_load_pos_r_mohms;
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r_aud_res_tot_mohms = pdata->xtalk.r_aud_res_tot_r_mohms;
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r_load_mohms = pdata->xtalk.zr * OHMS_TO_MILLIOHMS;
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}
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/* Xtalk gain calculation */
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v_common_gnd_factor = get_v_common_gnd_factor(pdata->xtalk.r_gnd_res_tot_mohms,
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r_load_mohms,
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r_aud_res_tot_mohms);
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if (pdata->xtalk.xtalk_config == XTALK_ANALOG) {
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v_feedback_tap_factor = get_v_feedback_tap_factor_analog(
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pdata->xtalk.r_conn_par_load_neg_mohms,
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r_load_mohms,
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pdata->xtalk.r_gnd_res_tot_mohms,
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r_aud_res_tot_mohms);
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} else {
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v_feedback_tap_factor = get_v_feedback_tap_factor(
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pdata->xtalk.r_gnd_int_fet_mohms,
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pdata->xtalk.r_gnd_par_route1_mohms,
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r_load_mohms,
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pdata->xtalk.r_gnd_res_tot_mohms,
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r_aud_res_tot_mohms);
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}
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xtalk_gain = get_xtalk_gain(v_common_gnd_factor, v_feedback_tap_factor);
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/* Store scale and alpha values */
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*scale = get_xtalk_scale(xtalk_gain);
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*alpha = get_xtalk_alpha(xtalk_gain, *scale);
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if (xtalk_indx == XTALK_L_CH_NUM) {
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pdata->xtalk.scale_l = *scale;
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pdata->xtalk.alpha_l = *alpha;
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} else {
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pdata->xtalk.scale_r = *scale;
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pdata->xtalk.alpha_r = *alpha;
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}
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return;
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err_data:
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*scale = MAX_XTALK_SCALE;
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*alpha = MAX_XTALK_ALPHA;
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}
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static int wcd939x_config_xtalk(struct snd_soc_component *component,
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int event, int xtalk_indx)
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{
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u8 scale = MAX_XTALK_SCALE, alpha = MAX_XTALK_ALPHA;
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u16 xtalk_sec0 = 0, xtalk_sec1 = 0, xtalk_sec2 = 0, xtalk_sec3 = 0;
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struct wcd939x_priv *wcd939x = NULL;
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@@ -968,7 +1145,7 @@ static int wcd939x_config_xtalk(struct snd_soc_component *component,
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return -EINVAL;
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}
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wcd939x = snd_soc_component_get_drvdata(component);
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wcd939x = snd_soc_component_get_drvdata(component);
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if (!wcd939x->xtalk_enabled[xtalk_indx])
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return 0;
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@@ -979,14 +1156,16 @@ static int wcd939x_config_xtalk(struct snd_soc_component *component,
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switch(event) {
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case SND_SOC_DAPM_PRE_PMU:
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xtalk_sec0 = WCD939X_HPHL_RX_PATH_SEC0 + (xtalk_indx * WCD939X_XTALK_OFFSET);
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xtalk_sec1 = WCD939X_HPHL_RX_PATH_SEC1 + (xtalk_indx * WCD939X_XTALK_OFFSET);
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xtalk_sec2 = WCD939X_HPHL_RX_PATH_SEC2 + (xtalk_indx * WCD939X_XTALK_OFFSET);
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xtalk_sec3 = WCD939X_HPHL_RX_PATH_SEC3 + (xtalk_indx * WCD939X_XTALK_OFFSET);
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snd_soc_component_update_bits(component, xtalk_sec1, 0xFF, 0xFE);
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snd_soc_component_update_bits(component, xtalk_sec0, 0x1F, 0x06);
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/* Determine scale and alpha */
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get_xtalk_scale_and_alpha(component, xtalk_indx, &scale, &alpha);
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snd_soc_component_update_bits(component, xtalk_sec1, 0xFF, alpha);
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snd_soc_component_update_bits(component, xtalk_sec0, 0x1F, scale);
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snd_soc_component_update_bits(component, xtalk_sec3, 0xFF, 0x4F);
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snd_soc_component_update_bits(component, xtalk_sec2, 0x1F, 0x11);
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@@ -4606,6 +4785,129 @@ static void wcd939x_dt_parse_micbias_info(struct device *dev,
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}
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}
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static void init_xtalk_params(struct wcd939x_xtalk_params *xtalk)
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{
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xtalk->r_gnd_int_fet_mohms = 200;
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xtalk->r_gnd_par_route1_mohms = 50;
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xtalk->r_gnd_par_route2_mohms = 50;
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xtalk->r_gnd_ext_fet_mohms = 650;
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xtalk->r_conn_par_load_neg_mohms = 125;
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xtalk->r_aud_int_fet_l_mohms = 200;
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xtalk->r_aud_int_fet_r_mohms = 200;
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xtalk->r_aud_ext_fet_l_mohms = 650;
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xtalk->r_aud_ext_fet_r_mohms = 650;
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xtalk->r_conn_par_load_pos_l_mohms = 7550;
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xtalk->r_conn_par_load_pos_r_mohms = 7550;
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xtalk->zl = 0;
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xtalk->zr = 0;
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xtalk->scale_l = MAX_XTALK_SCALE;
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xtalk->alpha_l = MAX_XTALK_ALPHA;
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xtalk->scale_r = MAX_XTALK_SCALE;
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xtalk->alpha_r = MAX_XTALK_ALPHA;
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xtalk->xtalk_config = XTALK_ANALOG;
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}
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static void parse_xtalk_param(struct device *dev, u32 default_val, u32 *prop_val_p,
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char *prop)
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{
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int rc = 0;
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if (of_find_property(dev->of_node, prop, NULL)) {
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rc = wcd939x_read_of_property_u32(dev, prop, prop_val_p);
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if ((!rc) && (*prop_val_p <= MAX_IMPEDANCE_MOHMS) && (*prop_val_p > 0))
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return;
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*prop_val_p = default_val;
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dev_dbg(dev, "%s: %s OOB. Default value of %d will be used.\n", __func__, prop,
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default_val);
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} else {
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*prop_val_p = default_val;
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dev_dbg(dev, "%s: %s property not found. Default value of %d will be used.\n",
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__func__, prop, default_val);
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}
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}
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static void wcd939x_dt_parse_xtalk_info(struct device *dev, struct wcd939x_xtalk_params *xtalk)
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{
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u32 prop_val = 0;
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int rc = 0;
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init_xtalk_params(xtalk);
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/* xtalk_config: Determine type of crosstalk: none (0), digital (1), or analog (2) */
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if (of_find_property(dev->of_node, "qcom,xtalk-config", NULL)) {
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rc = wcd939x_read_of_property_u32(dev, "qcom,xtalk-config", &prop_val);
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if ((!rc) && (prop_val == XTALK_NONE || prop_val == XTALK_DIGITAL
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|| prop_val == XTALK_ANALOG)) {
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xtalk->xtalk_config = (enum xtalk_mode) prop_val;
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} else
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dev_dbg(dev, "%s: qcom,xtalk-config OOB. Default value of %s used.\n",
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__func__, "XTALK_NONE");
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} else
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dev_dbg(dev,
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"%s: qcom,xtalk-config property not found. Default value of %s used.\n",
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__func__, "XTALK_NONE");
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if (xtalk->xtalk_config == XTALK_NONE)
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goto post_get_params;
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/* r_gnd_int_fet_mohms */
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parse_xtalk_param(dev, xtalk->r_gnd_int_fet_mohms, &prop_val,
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"qcom,xtalk-r-gnd-int-fet-mohms");
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xtalk->r_gnd_int_fet_mohms = prop_val;
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/* r_gnd_par_route1_mohms */
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parse_xtalk_param(dev, xtalk->r_gnd_par_route1_mohms, &prop_val,
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"qcom,xtalk-r-gnd-par-route1-mohms");
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xtalk->r_gnd_par_route1_mohms = prop_val;
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/* r_gnd_par_route2_mohms */
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parse_xtalk_param(dev, xtalk->r_gnd_par_route2_mohms, &prop_val,
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"qcom,xtalk-r-gnd-par-route2-mohms");
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xtalk->r_gnd_par_route2_mohms = prop_val;
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/* r_gnd_ext_fet_mohms */
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parse_xtalk_param(dev, xtalk->r_gnd_ext_fet_mohms, &prop_val,
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"qcom,xtalk-r-gnd-ext-fet-mohms");
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xtalk->r_gnd_ext_fet_mohms = prop_val;
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/* r_conn_par_load_neg_mohms */
|
||||
parse_xtalk_param(dev, xtalk->r_conn_par_load_neg_mohms, &prop_val,
|
||||
"qcom,xtalk-r-conn-par-load-neg-mohms");
|
||||
xtalk->r_conn_par_load_neg_mohms = prop_val;
|
||||
/* r_aud_int_fet_l_mohms */
|
||||
parse_xtalk_param(dev, xtalk->r_aud_int_fet_l_mohms, &prop_val,
|
||||
"qcom,xtalk-r-aud-int-fet-l-mohms");
|
||||
xtalk->r_aud_int_fet_l_mohms = prop_val;
|
||||
/* r_aud_int_fet_r_mohms */
|
||||
parse_xtalk_param(dev, xtalk->r_aud_int_fet_r_mohms, &prop_val,
|
||||
"qcom,xtalk-r-aud-int-fet-r-mohms");
|
||||
xtalk->r_aud_int_fet_r_mohms = prop_val;
|
||||
/* r_aud_ext_fet_l_mohms */
|
||||
parse_xtalk_param(dev, xtalk->r_aud_ext_fet_l_mohms, &prop_val,
|
||||
"qcom,xtalk-r-aud-ext-fet-l-mohms");
|
||||
xtalk->r_aud_ext_fet_l_mohms = prop_val;
|
||||
/* r_aud_ext_fet_r_mohms */
|
||||
parse_xtalk_param(dev, xtalk->r_aud_ext_fet_r_mohms, &prop_val,
|
||||
"qcom,xtalk-r-aud-ext-fet-r-mohms");
|
||||
xtalk->r_aud_ext_fet_r_mohms = prop_val;
|
||||
/* r_conn_par_load_pos_l_mohms */
|
||||
parse_xtalk_param(dev, xtalk->r_conn_par_load_pos_l_mohms, &prop_val,
|
||||
"qcom,xtalk-r-conn-par-load-pos-l-mohms");
|
||||
xtalk->r_conn_par_load_pos_l_mohms = prop_val;
|
||||
/* r_conn_par_load_pos_r_mohms */
|
||||
parse_xtalk_param(dev, xtalk->r_conn_par_load_pos_r_mohms, &prop_val,
|
||||
"qcom,xtalk-r-conn-par-load-pos-r-mohms");
|
||||
xtalk->r_conn_par_load_pos_r_mohms = prop_val;
|
||||
|
||||
post_get_params:
|
||||
xtalk->r_gnd_res_tot_mohms = get_r_gnd_res_tot_mohms(xtalk->r_gnd_int_fet_mohms,
|
||||
xtalk->r_gnd_par_route1_mohms,
|
||||
xtalk->r_gnd_par_route2_mohms,
|
||||
xtalk->r_gnd_ext_fet_mohms,
|
||||
xtalk->r_conn_par_load_neg_mohms);
|
||||
xtalk->r_aud_res_tot_l_mohms = get_r_aud_res_tot_mohms(xtalk->r_aud_int_fet_l_mohms,
|
||||
xtalk->r_aud_ext_fet_l_mohms,
|
||||
xtalk->r_conn_par_load_pos_l_mohms);
|
||||
xtalk->r_aud_res_tot_r_mohms = get_r_aud_res_tot_mohms(xtalk->r_aud_int_fet_r_mohms,
|
||||
xtalk->r_aud_ext_fet_r_mohms,
|
||||
xtalk->r_conn_par_load_pos_r_mohms);
|
||||
}
|
||||
|
||||
static int wcd939x_reset_low(struct device *dev)
|
||||
{
|
||||
struct wcd939x_priv *wcd939x = NULL;
|
||||
@@ -4668,6 +4970,7 @@ struct wcd939x_pdata *wcd939x_populate_dt_data(struct device *dev)
|
||||
pdata->tx_slave = of_parse_phandle(dev->of_node, "qcom,tx-slave", 0);
|
||||
|
||||
wcd939x_dt_parse_micbias_info(dev, &pdata->micbias);
|
||||
wcd939x_dt_parse_xtalk_info(dev, &pdata->xtalk);
|
||||
|
||||
return pdata;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user