* Tony Lindgren <tony@xxxxxxxxxxx> [170322 16:39]:
> +/**
> + * enum cpcap_adc_type - cpcap adc types
> + *
> + * Two banks of channels with eight channels in each. The first two channels
> + * in bank0 can be muxed for other functionality with CPCAP_ADC_TYPE_BATT_PI.
> + */
> +enum cpcap_adc_type {
> + CPCAP_ADC_TYPE_BANK_0,
> + CPCAP_ADC_TYPE_BANK_1,
> + CPCAP_ADC_TYPE_BATT_PI,
> +};
Hmm looks like I only got half done yesterday.. I can now get
rid of the above in favor of using just channels.
> +static void cpcap_adc_phase(struct cpcap_adc_request *req, int index)
> +{
> + const struct cpcap_adc_conversion_tbl *conv_tbl;
> + const struct cpcap_adc_phasing_tbl *phase_tbl;
> + int tbl_index;
> +
> + switch (req->type) {
> + case CPCAP_ADC_TYPE_BANK_0:
> + conv_tbl = bank0_conversion;
> + phase_tbl = bank0_phasing;
> + tbl_index = index;
> + break;
> + case CPCAP_ADC_TYPE_BANK_1:
> + conv_tbl = bank1_conversion;
> + phase_tbl = bank1_phasing;
> + tbl_index = index;
> + break;
> + case CPCAP_ADC_TYPE_BATT_PI:
> + conv_tbl = bank0_conversion;
> + phase_tbl = bank0_phasing;
> + tbl_index = (index % 2) ? CPCAP_ADC_BATTI :
> + CPCAP_ADC_BATTP;
> + break;
> + default:
> + return;
> + }
And then the above switch will go away.
> +static void cpcap_adc_convert(struct cpcap_adc_request *req, int index)
> +{
> + const struct cpcap_adc_conversion_tbl *conv_tbl;
> + int tbl_index;
> +
> + switch (req->type) {
> + case CPCAP_ADC_TYPE_BANK_0:
> + conv_tbl = bank0_conversion;
> + tbl_index = index;
> + break;
> + case CPCAP_ADC_TYPE_BANK_1:
> + conv_tbl = bank1_conversion;
> + tbl_index = index;
> + break;
> + case CPCAP_ADC_TYPE_BATT_PI:
> + conv_tbl = bank0_conversion;
> + tbl_index = (index % 2) ?
> + CPCAP_ADC_BATTI : CPCAP_ADC_BATTP;
> + break;
> + default:
> + return;
> + }
And here too.
> +static int cpcap_adc_init_request(struct cpcap_adc_request *req,
> + int channel)
> +{
> + switch (channel) {
> + case 0 ... 7:
> + req->bank_index = channel;
> + req->type = CPCAP_ADC_TYPE_BANK_0;
> + break;
> + case 8 ... 15:
> + req->bank_index = channel - 8;
> + req->type = CPCAP_ADC_TYPE_BANK_1;
> + break;
> + case 16 ... 17:
> + req->bank_index = channel - 16;
> + req->type = CPCAP_ADC_TYPE_BATT_PI;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
And this can be done by indexing everything with just the
channels. So I'll be posting v3 of this patch at some point
hopefully later on today.
Regards,
Tony
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