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[2620:137:e000::1:20]) by mx.google.com with ESMTP id m16-20020a17090679d000b00992fef51a60si10098973ejo.525.2023.07.15.06.12.57; Sat, 15 Jul 2023 06:13:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@sberdevices.ru header.s=mail header.b=fxK9S0yG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=sberdevices.ru Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229639AbjGOLHP (ORCPT + 99 others); Sat, 15 Jul 2023 07:07:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229919AbjGOLHK (ORCPT ); Sat, 15 Jul 2023 07:07:10 -0400 Received: from mx1.sberdevices.ru (mx1.sberdevices.ru [37.18.73.165]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF1852702; Sat, 15 Jul 2023 04:07:06 -0700 (PDT) Received: from p-infra-ksmg-sc-msk01 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id 6E90310000A; Sat, 15 Jul 2023 14:07:03 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru 6E90310000A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1689419223; bh=3mmX30I0FwXOJ51SYCtTE0imFkDvARZbsiRbScj96a4=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=fxK9S0yGCJ66oe6he9tWrrxdTp0sj5iR3ghXAL1UZDufz/Yo53ZQjCXs8OhlV7ctF +qFtfma4MKpl5o7El7xbt5Y7mjPIuxivPTgJ+gXcrxJWA3L482Vaa2a/N6JV+kONXY n2/NXM4XTQD+fyeMZPuwD1t6DcBY4/3nARfYxG2hmvBa8ImcagiK8GEuRKLi7X89oM /UuP8+kbmGI48eTwalZsXh3wxduRQny8vMAOo6KvVuwASEow55LbXJ2INyzEyM4VRQ 7QgPv7XQFQ8xZLBsXtiXHY9WVmQk7dUOPIAWL9rLC2FlvB69yFiX2mZRla+Ma3uy8x Wzziy6SvKSLdw== Received: from p-i-exch-sc-m01.sberdevices.ru (p-i-exch-sc-m01.sberdevices.ru [172.16.192.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Sat, 15 Jul 2023 14:07:03 +0300 (MSK) Received: from localhost.localdomain (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Sat, 15 Jul 2023 14:06:23 +0300 From: George Stark To: , , , , , , , , CC: , , , , Subject: [PATCH v1 3/3] iio: adc: meson: init voltage control bits Date: Sat, 15 Jul 2023 14:06:00 +0300 Message-ID: <20230715110654.6035-4-gnstark@sberdevices.ru> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230715110654.6035-1-gnstark@sberdevices.ru> References: <20230715110654.6035-1-gnstark@sberdevices.ru> MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 178635 [Jul 15 2023] X-KSMG-AntiSpam-Version: 5.9.59.0 X-KSMG-AntiSpam-Envelope-From: GNStark@sberdevices.ru X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 523 523 523027ce26ed1d9067f7a52a4756a876e54db27c, {Tracking_from_domain_doesnt_match_to}, sberdevices.ru:5.0.1,7.1.1;100.64.160.123:7.1.2;127.0.0.199:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;p-i-exch-sc-m01.sberdevices.ru:5.0.1,7.1.1, FromAlignment: s, {Tracking_white_helo}, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2023/07/15 07:52:00 #21618415 X-KSMG-AntiVirus-Status: Clean, skipped X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1771492423319761223 X-GMAIL-MSGID: 1771492423319761223 Define and init voltage configuration bits. Those bits are inited in vendor boot code (bl2, bl33) already so do it in the driver to not depend on other code. Introduced bits: REG11[0] - selects Vref. 0 - calibration voltage, 1 - VDDA. txlx and later SoCs support VDDA or calibration voltage as Vref, but others support only calibration voltage. For newer platforms vendor uses VDDA as default. REG11[1] - reserved bit. g12a and later SoCs must write 1, others SoCs write 0. REG11[5] - Vref voltage. 0 - 0.9v, 1 - 1.8v. g12a and later SoCs must write 0, others SoCs write 1. REG11[6] - selects common-mode voltage, 0: from AVDD, 1: from Vref. g12a and later SoCs must write 0, others SoCs write 1. Signed-off-by: George Stark --- drivers/iio/adc/meson_saradc.c | 48 ++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 806ba7cd7320..05fb30b81b8d 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -156,6 +156,10 @@ */ #define MESON_SAR_ADC_REG11 0x2c #define MESON_SAR_ADC_REG11_BANDGAP_EN BIT(13) + #define MESON_SAR_ADC_REG11_CMV_SEL BIT(6) + #define MESON_SAR_ADC_REG11_VREF_VOLTAGE BIT(5) + #define MESON_SAR_ADC_REG11_EOC BIT(1) + #define MESON_SAR_ADC_REG11_VREF_SEL BIT(0) #define MESON_SAR_ADC_REG13 0x34 #define MESON_SAR_ADC_REG13_12BIT_CALIBRATION_MASK GENMASK(13, 8) @@ -216,6 +220,11 @@ .datasheet_name = "SAR_ADC_MUX_"#_sel, \ } +enum meson_sar_adc_vref_sel { + VREF_CALIBATION_VOLTAGE = 0, + VREF_VDDA = 1, +}; + enum meson_sar_adc_avg_mode { NO_AVERAGING = 0x0, MEAN_AVERAGING = 0x1, @@ -314,6 +323,12 @@ struct meson_sar_adc_param { unsigned int temperature_multiplier; unsigned int temperature_divider; u8 disable_ring_counter; + bool has_reg11; + bool has_vref_select; + u8 vref_select; + u8 cmv_select; + u8 adc_eoc; + enum meson_sar_adc_vref_sel vref_volatge; }; struct meson_sar_adc_data { @@ -974,6 +989,29 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev) MESON_SAR_ADC_REG3_CTRL_CONT_RING_COUNTER_EN, regval); + if (priv->param->has_reg11) { + regval = FIELD_PREP(MESON_SAR_ADC_REG11_EOC, priv->param->adc_eoc); + regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG11, + MESON_SAR_ADC_REG11_EOC, regval); + + if (priv->param->has_vref_select) { + regval = FIELD_PREP(MESON_SAR_ADC_REG11_VREF_SEL, + priv->param->vref_select); + regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG11, + MESON_SAR_ADC_REG11_VREF_SEL, regval); + } + + regval = FIELD_PREP(MESON_SAR_ADC_REG11_VREF_VOLTAGE, + priv->param->vref_volatge); + regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG11, + MESON_SAR_ADC_REG11_VREF_VOLTAGE, regval); + + regval = FIELD_PREP(MESON_SAR_ADC_REG11_CMV_SEL, + priv->param->cmv_select); + regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG11, + MESON_SAR_ADC_REG11_CMV_SEL, regval); + } + ret = clk_set_parent(priv->adc_sel_clk, priv->clkin); if (ret) return dev_err_probe(dev, ret, "failed to set adc parent to clkin\n"); @@ -1195,6 +1233,9 @@ static const struct meson_sar_adc_param meson_sar_adc_gxbb_param = { .bandgap_reg = MESON_SAR_ADC_REG11, .regmap_config = &meson_sar_adc_regmap_config_gxbb, .resolution = 10, + .has_reg11 = true, + .vref_volatge = 1, + .cmv_select = 1, }; static const struct meson_sar_adc_param meson_sar_adc_gxl_param = { @@ -1204,6 +1245,9 @@ static const struct meson_sar_adc_param meson_sar_adc_gxl_param = { .regmap_config = &meson_sar_adc_regmap_config_gxbb, .resolution = 12, .disable_ring_counter = 1, + .has_reg11 = true, + .vref_volatge = 1, + .cmv_select = 1, }; static const struct meson_sar_adc_param meson_sar_adc_g12a_param = { @@ -1213,6 +1257,10 @@ static const struct meson_sar_adc_param meson_sar_adc_g12a_param = { .regmap_config = &meson_sar_adc_regmap_config_gxbb, .resolution = 12, .disable_ring_counter = 1, + .has_reg11 = true, + .adc_eoc = 1, + .has_vref_select = true, + .vref_select = VREF_VDDA, }; static const struct meson_sar_adc_data meson_sar_adc_meson8_data = {