From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5509DC4741F for ; Wed, 30 Sep 2020 07:57:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 180AC2075F for ; Wed, 30 Sep 2020 07:57:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="fHoXBFJz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728458AbgI3H5q (ORCPT ); Wed, 30 Sep 2020 03:57:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728126AbgI3H5h (ORCPT ); Wed, 30 Sep 2020 03:57:37 -0400 Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EABEFC0613D4 for ; Wed, 30 Sep 2020 00:57:34 -0700 (PDT) Received: by mail-pf1-x442.google.com with SMTP id w7so633428pfi.4 for ; Wed, 30 Sep 2020 00:57:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Gw1RFzK+yqUfrbLUb2+nTAxxqoc8k7XTSgedNtFofyE=; b=fHoXBFJzW9q1lKzLZ8paOVu1Kp7m4wRQ6AfsR1yl3WZJgS+22rJrctdrcivzvQDUOg n5McLJgP2Qd/7LnQZlRmu7tpRXyuyB8et3tsVmRoKenMDmOx+yXJDQ3LgxPZi3ATwet3 B422ar3HwfHshIWuY8SehOyWkd78+51GnyvqQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Gw1RFzK+yqUfrbLUb2+nTAxxqoc8k7XTSgedNtFofyE=; b=GwXz1iexw9zcnD67F8A1+95OfUaKaRdP5oE1tKckr243AoiqO1DPCmREOv/Fu46Ffo Kwe3/RVOP1CDWeLwA0FpOzyUDLMBu9+v2nUHjuNA6Q6r0taT6t0OFLrhhxYwLKhbs666 trsYWvyRuUQdo54i/FjFPIyS08UX8R1phTMr75RVw9IrVnJ1bakAsaNyv48L3374P9Lt Tj5XzQOVkOaReO+gh0oIdqc4pEuvngASxFmOZlK5JTtpvUkmJ2am4nomkF1jV5r8cuzj Rt2IKoUj3RnMdz0IZIoUvMUSqN4PRS+ZlTwEch6rL9bB3oyQfaIN2vIZSGdsqpiLUiog 3NTg== X-Gm-Message-State: AOAM531/tIJViEERSBgoh2h+FrjY8p/rdyLnMfHGrP1eDaz4+BCliQXe wvNaSP+VCZuCVfIxpEc+zI922g== X-Google-Smtp-Source: ABdhPJw1GlABTjohd8iR+8sFFzcQQOx9J4YlvXW46Cw3p7uoZOHsaGriT8XOILLMhjghBLYAOx08HA== X-Received: by 2002:a05:6a00:2db:b029:142:2501:34ed with SMTP id b27-20020a056a0002dbb0290142250134edmr1204975pft.70.1601452654504; Wed, 30 Sep 2020 00:57:34 -0700 (PDT) Received: from smtp.gmail.com ([2620:15c:202:1:3e52:82ff:fe6c:83ab]) by smtp.gmail.com with ESMTPSA id l21sm1272131pjq.54.2020.09.30.00.57.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Sep 2020 00:57:34 -0700 (PDT) From: Stephen Boyd To: Jonathan Cameron Cc: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, Daniel Campello , Lars-Peter Clausen , Peter Meerwald-Stadler , Douglas Anderson , Gwendal Grignou , Evan Green Subject: [PATCH v2 4/6] iio: sx9310: Support setting debounce values Date: Wed, 30 Sep 2020 00:57:26 -0700 Message-Id: <20200930075728.2410327-5-swboyd@chromium.org> X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog In-Reply-To: <20200930075728.2410327-1-swboyd@chromium.org> References: <20200930075728.2410327-1-swboyd@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The rising and falling directions can be debounced in the hardware as "close" and "far" debounce settings. Add support for these as rising and falling debounce settings. Cc: Daniel Campello Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Cc: Douglas Anderson Cc: Gwendal Grignou Cc: Evan Green Signed-off-by: Stephen Boyd --- drivers/iio/proximity/sx9310.c | 100 +++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index 9eb10e8263e7..3f909177eca9 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -77,6 +77,8 @@ #define SX9310_REG_PROX_CTRL10 0x1a #define SX9310_REG_PROX_CTRL10_HYST_MASK GENMASK(5, 4) #define SX9310_REG_PROX_CTRL10_HYST_6PCT (0x01 << 4) +#define SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK GENMASK(3, 2) +#define SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK GENMASK(1, 0) #define SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_2 0x01 #define SX9310_REG_PROX_CTRL11 0x1b #define SX9310_REG_PROX_CTRL12 0x1c @@ -147,6 +149,16 @@ struct sx9310_data { }; static const struct iio_event_spec sx9310_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD), + }, { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_EITHER, @@ -601,6 +613,42 @@ static int sx9310_read_hysteresis(struct sx9310_data *data, return IIO_VAL_INT; } +static int sx9310_read_far_debounce(struct sx9310_data *data, int *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, ®val); + if (ret) + return ret; + + regval = FIELD_GET(SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, regval); + if (regval) + *val = 1 << regval; + else + *val = 0; + + return IIO_VAL_INT; +} + +static int sx9310_read_close_debounce(struct sx9310_data *data, int *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, ®val); + if (ret) + return ret; + + regval = FIELD_GET(SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, regval); + if (regval) + *val = 1 << regval; + else + *val = 0; + + return IIO_VAL_INT; +} + static int sx9310_read_event_val(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, @@ -615,6 +663,15 @@ static int sx9310_read_event_val(struct iio_dev *indio_dev, switch (info) { case IIO_EV_INFO_VALUE: return sx9310_read_thresh(data, chan, val); + case IIO_EV_INFO_PERIOD: + switch (dir) { + case IIO_EV_DIR_RISING: + return sx9310_read_far_debounce(data, val); + case IIO_EV_DIR_FALLING: + return sx9310_read_close_debounce(data, val); + default: + return -EINVAL; + } case IIO_EV_INFO_HYSTERESIS: return sx9310_read_hysteresis(data, chan, val); default: @@ -682,6 +739,40 @@ static int sx9310_write_hysteresis(struct sx9310_data *data, return ret; } +static int sx9310_write_far_debounce(struct sx9310_data *data, int val) +{ + int ret; + unsigned int regval; + + val = ilog2(val); + regval = FIELD_PREP(SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, val); + + mutex_lock(&data->mutex); + ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10, + SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, + regval); + mutex_unlock(&data->mutex); + + return ret; +} + +static int sx9310_write_close_debounce(struct sx9310_data *data, int val) +{ + int ret; + unsigned int regval; + + val = ilog2(val); + regval = FIELD_PREP(SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, val); + + mutex_lock(&data->mutex); + ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10, + SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, + regval); + mutex_unlock(&data->mutex); + + return ret; +} + static int sx9310_write_event_val(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, @@ -696,6 +787,15 @@ static int sx9310_write_event_val(struct iio_dev *indio_dev, switch (info) { case IIO_EV_INFO_VALUE: return sx9310_write_thresh(data, chan, val); + case IIO_EV_INFO_PERIOD: + switch (dir) { + case IIO_EV_DIR_RISING: + return sx9310_write_far_debounce(data, val); + case IIO_EV_DIR_FALLING: + return sx9310_write_close_debounce(data, val); + default: + return -EINVAL; + } case IIO_EV_INFO_HYSTERESIS: return sx9310_write_hysteresis(data, chan, val); default: -- Sent by a computer, using git, on the internet