From patchwork Tue Jan 9 09:33:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 123830 Delivered-To: patch@linaro.org Received: by 10.140.22.227 with SMTP id 90csp3804586qgn; Tue, 9 Jan 2018 01:38:04 -0800 (PST) X-Google-Smtp-Source: ACJfBotU2QfnKOVXm8IdDZBumvo47YuAh8R515iGfwR7cl86Tr9wMjTyxruBFF6nseHFUfSYkm5a X-Received: by 10.84.138.1 with SMTP id 1mr4839787plo.141.1515490684692; Tue, 09 Jan 2018 01:38:04 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1515490684; cv=none; d=google.com; s=arc-20160816; b=IU4ydBfxKyjn+f0qkQ7gLXaGao3uaEsd6TIJKptamiTkkfcZf0kiDZZtklfbkvrryZ ZuiUjQHzSPviw0/SPyMpDIjYaGAjfWOcBzxaRD/NWLQYFiAXvFT6UN+Et9B/3OtribVf 4MPkIwYVyBm35jJN+Q+maHMx5ilOMl53zh7KaMkrS9ZyHgrn0PTO+Qf7FXRB5wkwrsJ0 MoBtePbVHitulkIN/hiLjQY/08lF52l4qrh3NXNENOvLgwRyPCLF6jSaNClnUxCYTBLe Ucn0MLDwsNay1Lu9lhC9xqHkgtlIEsgIbux5Ntt2PpozKMWd4YSAjHzQP+ji3sW6RZYF lCsg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:references :in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=KWVx8/mXAEOoL02qB1nB1HH135FlN+J+EHBz7gI9wII=; b=WyqRNFTNYCg1YsynoZurRZIQeQMBwSLzwzKl4MnAnGWtLR/zhR7Jrrw7hXGRUVo8FA Lm/B7/yw/6EuklHjq7mm46e3XAFNu12UxV0h2QkvBsPvXty3aaoz8HnwmyMWSqyQgq0t mDzcooG29E5BAIDaLeqPNyoGTkISd34Bk/Z+lJ1j6GHKmZkfXENTaLLejyT/or36lSOn D1zpZD4eHfg+nfJ96QXO+GWMajSe5dUhhth3EsRiM5dFicX+GImXh12ZXDUSew99oDFy eROBEskuzUAo9sc7G1BiBCmEDsWnr0fyUav+nswvUIQshTu3h1GrHvwg+vnlbdclve+8 oUQA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o3si10005783pld.358.2018.01.09.01.38.04; Tue, 09 Jan 2018 01:38:04 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752891AbeAIJfW (ORCPT + 28 others); Tue, 9 Jan 2018 04:35:22 -0500 Received: from mail.free-electrons.com ([62.4.15.54]:45782 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752749AbeAIJfL (ORCPT ); Tue, 9 Jan 2018 04:35:11 -0500 Received: by mail.free-electrons.com (Postfix, from userid 110) id 525122081A; Tue, 9 Jan 2018 10:35:09 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT, URIBL_BLOCKED shortcircuit=ham autolearn=disabled version=3.4.0 Received: from localhost.localdomain (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id 8BF13207F3; Tue, 9 Jan 2018 10:34:51 +0100 (CET) From: Quentin Schulz To: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, robh+dt@kernel.org, mark.rutland@arm.com, wens@csie.org, sre@kernel.org, linux@armlinux.org.uk, maxime.ripard@free-electrons.com, lee.jones@linaro.org Cc: linux-iio@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, thomas.petazzoni@free-electrons.com, linux-sunxi@googlegroups.com, Quentin Schulz Subject: [PATCH v2 08/16] iio: adc: axp20x_adc: add support for AXP813 ADC Date: Tue, 9 Jan 2018 10:33:39 +0100 Message-Id: X-Mailer: git-send-email 2.14.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The X-Powers AXP813 PMIC is really close to what is already done for AXP20X/AXP22X. There are two pairs of bits to set the rate (one for Voltage and Current measurements and one for TS/GPIO0 voltage measurements) instead of one. The register to set the ADC rates is different from the one for AXP20X/AXP22X. GPIO0 can be used as an ADC (measuring Volts) unlike for AXP22X. The scales to apply to the different inputs are unlike the ones from AXP20X and AXP22X. Signed-off-by: Quentin Schulz --- drivers/iio/adc/axp20x_adc.c | 123 ++++++++++++++++++++++++++++++++++++- include/linux/mfd/axp20x.h | 2 +- 2 files changed, 125 insertions(+) -- git-series 0.9.1 diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c index f8c4c62..df50a1d 100644 --- a/drivers/iio/adc/axp20x_adc.c +++ b/drivers/iio/adc/axp20x_adc.c @@ -35,8 +35,13 @@ #define AXP20X_GPIO10_IN_RANGE_GPIO1_VAL(x) (((x) & BIT(0)) << 1) #define AXP20X_ADC_RATE_MASK GENMASK(7, 6) +#define AXP813_V_I_ADC_RATE_MASK GENMASK(5, 4) +#define AXP813_ADC_RATE_MASK (AXP20X_ADC_RATE_MASK | AXP813_V_I_ADC_RATE_MASK) #define AXP20X_ADC_RATE_HZ(x) ((ilog2((x) / 25) << 6) & AXP20X_ADC_RATE_MASK) #define AXP22X_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 6) & AXP20X_ADC_RATE_MASK) +#define AXP813_TS_GPIO0_ADC_RATE_HZ(x) AXP20X_ADC_RATE_HZ(x) +#define AXP813_V_I_ADC_RATE_HZ(x) ((ilog2((x) / 100) << 4) & AXP813_V_I_ADC_RATE_MASK) +#define AXP813_ADC_RATE_HZ(x) (AXP20X_ADC_RATE_HZ(x) | AXP813_V_I_ADC_RATE_HZ(x)) #define AXP20X_ADC_CHANNEL(_channel, _name, _type, _reg) \ { \ @@ -95,6 +100,12 @@ enum axp22x_adc_channel_i { AXP22X_BATT_DISCHRG_I, }; +enum axp813_adc_channel_v { + AXP813_TS_IN = 0, + AXP813_GPIO0_V, + AXP813_BATT_V, +}; + static struct iio_map axp20x_maps[] = { { .consumer_dev_name = "axp20x-usb-power-supply", @@ -197,6 +208,25 @@ static const struct iio_chan_spec axp22x_adc_channels[] = { AXP20X_BATT_DISCHRG_I_H), }; +static const struct iio_chan_spec axp813_adc_channels[] = { + { + .type = IIO_TEMP, + .address = AXP22X_PMIC_TEMP_H, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_OFFSET), + .datasheet_name = "pmic_temp", + }, + AXP20X_ADC_CHANNEL(AXP813_GPIO0_V, "gpio0_v", IIO_VOLTAGE, + AXP288_GP_ADC_H), + AXP20X_ADC_CHANNEL(AXP813_BATT_V, "batt_v", IIO_VOLTAGE, + AXP20X_BATT_V_H), + AXP20X_ADC_CHANNEL(AXP22X_BATT_CHRG_I, "batt_chrg_i", IIO_CURRENT, + AXP20X_BATT_CHRG_I_H), + AXP20X_ADC_CHANNEL(AXP22X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT, + AXP20X_BATT_DISCHRG_I_H), +}; + static int axp20x_adc_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val) { @@ -243,6 +273,18 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; } +static int axp813_adc_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val) +{ + struct axp20x_adc_iio *info = iio_priv(indio_dev); + + *val = axp20x_read_variable_width(info->regmap, chan->address, 12); + if (*val < 0) + return *val; + + return IIO_VAL_INT; +} + static int axp20x_adc_scale_voltage(int channel, int *val, int *val2) { switch (channel) { @@ -273,6 +315,24 @@ static int axp20x_adc_scale_voltage(int channel, int *val, int *val2) } } +static int axp813_adc_scale_voltage(int channel, int *val, int *val2) +{ + switch (channel) { + case AXP813_GPIO0_V: + *val = 0; + *val2 = 800000; + return IIO_VAL_INT_PLUS_MICRO; + + case AXP813_BATT_V: + *val = 1; + *val2 = 100000; + return IIO_VAL_INT_PLUS_MICRO; + + default: + return -EINVAL; + } +} + static int axp20x_adc_scale_current(int channel, int *val, int *val2) { switch (channel) { @@ -342,6 +402,26 @@ static int axp22x_adc_scale(struct iio_chan_spec const *chan, int *val, } } +static int axp813_adc_scale(struct iio_chan_spec const *chan, int *val, + int *val2) +{ + switch (chan->type) { + case IIO_VOLTAGE: + return axp813_adc_scale_voltage(chan->channel, val, val2); + + case IIO_CURRENT: + *val = 1; + return IIO_VAL_INT; + + case IIO_TEMP: + *val = 100; + return IIO_VAL_INT; + + default: + return -EINVAL; + } +} + static int axp20x_adc_offset_voltage(struct iio_dev *indio_dev, int channel, int *val) { @@ -425,6 +505,26 @@ static int axp22x_read_raw(struct iio_dev *indio_dev, } } +static int axp813_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_OFFSET: + *val = -2667; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + return axp813_adc_scale(chan, val, val2); + + case IIO_CHAN_INFO_RAW: + return axp813_adc_raw(indio_dev, chan, val); + + default: + return -EINVAL; + } +} + static int axp20x_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) @@ -470,6 +570,10 @@ static const struct iio_info axp22x_adc_iio_info = { .read_raw = axp22x_read_raw, }; +static const struct iio_info axp813_adc_iio_info = { + .read_raw = axp813_read_raw, +}; + static int axp20x_adc_rate(struct axp20x_adc_iio *info, int rate) { return regmap_update_bits(info->regmap, AXP20X_ADC_RATE, @@ -484,6 +588,13 @@ static int axp22x_adc_rate(struct axp20x_adc_iio *info, int rate) AXP22X_ADC_RATE_HZ(rate)); } +static int axp813_adc_rate(struct axp20x_adc_iio *info, int rate) +{ + return regmap_update_bits(info->regmap, AXP813_ADC_RATE, + AXP813_ADC_RATE_MASK, + AXP813_ADC_RATE_HZ(rate)); +} + struct axp_data { const struct iio_info *iio_info; int num_channels; @@ -515,9 +626,20 @@ static const struct axp_data axp22x_data = { .maps = axp22x_maps, }; +static const struct axp_data axp813_data = { + .iio_info = &axp813_adc_iio_info, + .num_channels = ARRAY_SIZE(axp813_adc_channels), + .channels = axp813_adc_channels, + .adc_en1_mask = AXP22X_ADC_EN1_MASK, + .adc_rate = axp813_adc_rate, + .adc_en2 = false, + .maps = axp22x_maps, +}; + static const struct of_device_id axp20x_adc_of_match[] = { { .compatible = "x-powers,axp20x-adc", .data = (void *)&axp20x_data, }, { .compatible = "x-powers,axp22x-adc", .data = (void *)&axp22x_data, }, + { .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, axp20x_adc_of_match); @@ -525,6 +647,7 @@ MODULE_DEVICE_TABLE(of, axp20x_adc_of_match); static const struct platform_device_id axp20x_adc_id_match[] = { { .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, }, { .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, }, + { .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(platform, axp20x_adc_id_match); diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h index 080798f..82bf774 100644 --- a/include/linux/mfd/axp20x.h +++ b/include/linux/mfd/axp20x.h @@ -266,6 +266,8 @@ enum axp20x_variants { #define AXP288_RT_BATT_V_H 0xa0 #define AXP288_RT_BATT_V_L 0xa1 +#define AXP813_ADC_RATE 0x85 + /* Fuel Gauge */ #define AXP288_FG_RDC1_REG 0xba #define AXP288_FG_RDC0_REG 0xbb