From: Andrej Picej <andrej.picej@norik.com> To: haibo.chen@nxp.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org Cc: jic23@kernel.org, lars@metafoo.de, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, upstream@lists.phytec.de Subject: [PATCH 1/2] iio: adc: imx93: Make calibration properties configurable Date: Wed, 20 Mar 2024 11:04:05 +0100 [thread overview] Message-ID: <20240320100407.1639082-2-andrej.picej@norik.com> (raw) In-Reply-To: <20240320100407.1639082-1-andrej.picej@norik.com> Make calibration properties: - AVGEN: allow averaging of calibration time, - NRSMPL: select the number of averaging samples during calibration and - TSAMP: specifies the sample time of calibration conversions configurable with device tree properties: - nxp,calib-avg-en, - nxp,calib-nr-samples and - nxp,calib-t-samples. Signed-off-by: Andrej Picej <andrej.picej@norik.com> --- drivers/iio/adc/imx93_adc.c | 66 ++++++++++++++++++++++++++++++++++--- 1 file changed, 61 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/imx93_adc.c b/drivers/iio/adc/imx93_adc.c index 4ccf4819f1f1..ad24105761ab 100644 --- a/drivers/iio/adc/imx93_adc.c +++ b/drivers/iio/adc/imx93_adc.c @@ -18,6 +18,7 @@ #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> +#include <linux/property.h> #define IMX93_ADC_DRIVER_NAME "imx93-adc" @@ -43,6 +44,9 @@ #define IMX93_ADC_MCR_MODE_MASK BIT(29) #define IMX93_ADC_MCR_NSTART_MASK BIT(24) #define IMX93_ADC_MCR_CALSTART_MASK BIT(14) +#define IMX93_ADC_MCR_AVGEN_MASK BIT(13) +#define IMX93_ADC_MCR_NRSMPL_MASK GENMASK(12, 11) +#define IMX93_ADC_MCR_TSAMP_MASK GENMASK(10, 9) #define IMX93_ADC_MCR_ADCLKSE_MASK BIT(8) #define IMX93_ADC_MCR_PWDN_MASK BIT(0) #define IMX93_ADC_MSR_CALFAIL_MASK BIT(30) @@ -145,7 +149,7 @@ static void imx93_adc_config_ad_clk(struct imx93_adc *adc) static int imx93_adc_calibration(struct imx93_adc *adc) { - u32 mcr, msr; + u32 mcr, msr, value; int ret; /* make sure ADC in power down mode */ @@ -156,12 +160,64 @@ static int imx93_adc_calibration(struct imx93_adc *adc) mcr &= ~FIELD_PREP(IMX93_ADC_MCR_ADCLKSE_MASK, 1); writel(mcr, adc->regs + IMX93_ADC_MCR); - imx93_adc_power_up(adc); - /* - * TODO: we use the default TSAMP/NRSMPL/AVGEN in MCR, - * can add the setting of these bit if need in future. + * Set calibration settings: + * - AVGEN: allow averaging of calibration time, + * - NRSMPL: select the number of averaging samples during calibration, + * - TSAMP: specifies the sample time of calibration conversions. */ + if (!device_property_read_u32(adc->dev, "nxp,calib-avg-en", &value)) { + mcr &= ~IMX93_ADC_MCR_AVGEN_MASK; + mcr |= FIELD_PREP(IMX93_ADC_MCR_AVGEN_MASK, value); + } + + if (!device_property_read_u32(adc->dev, "nxp,calib-nr-samples", &value)) { + switch (value) { + case 16: + value = 0x0; + break; + case 32: + value = 0x1; + break; + case 128: + value = 0x2; + break; + case 512: + value = 0x3; + break; + default: + dev_warn(adc->dev, "NRSMPL: wrong value, using default: 512\n"); + value = 0x3; + } + mcr &= ~IMX93_ADC_MCR_NRSMPL_MASK; + mcr |= FIELD_PREP(IMX93_ADC_MCR_NRSMPL_MASK, value); + } + + if (!device_property_read_u32(adc->dev, "nxp,calib-t-samples", &value)) { + switch (value) { + case 8: + value = 0x1; + break; + case 16: + value = 0x2; + break; + case 22: + value = 0x0; + break; + case 32: + value = 0x3; + break; + default: + dev_warn(adc->dev, "TSAMP: wrong value, using default: 22\n"); + value = 0x0; + } + mcr &= ~IMX93_ADC_MCR_TSAMP_MASK; + mcr |= FIELD_PREP(IMX93_ADC_MCR_TSAMP_MASK, value); + } + + writel(mcr, adc->regs + IMX93_ADC_MCR); + + imx93_adc_power_up(adc); /* run calibration */ mcr = readl(adc->regs + IMX93_ADC_MCR); -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Andrej Picej <andrej.picej@norik.com> To: haibo.chen@nxp.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org Cc: jic23@kernel.org, lars@metafoo.de, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, upstream@lists.phytec.de Subject: [PATCH 1/2] iio: adc: imx93: Make calibration properties configurable Date: Wed, 20 Mar 2024 11:04:05 +0100 [thread overview] Message-ID: <20240320100407.1639082-2-andrej.picej@norik.com> (raw) In-Reply-To: <20240320100407.1639082-1-andrej.picej@norik.com> Make calibration properties: - AVGEN: allow averaging of calibration time, - NRSMPL: select the number of averaging samples during calibration and - TSAMP: specifies the sample time of calibration conversions configurable with device tree properties: - nxp,calib-avg-en, - nxp,calib-nr-samples and - nxp,calib-t-samples. Signed-off-by: Andrej Picej <andrej.picej@norik.com> --- drivers/iio/adc/imx93_adc.c | 66 ++++++++++++++++++++++++++++++++++--- 1 file changed, 61 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/imx93_adc.c b/drivers/iio/adc/imx93_adc.c index 4ccf4819f1f1..ad24105761ab 100644 --- a/drivers/iio/adc/imx93_adc.c +++ b/drivers/iio/adc/imx93_adc.c @@ -18,6 +18,7 @@ #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> +#include <linux/property.h> #define IMX93_ADC_DRIVER_NAME "imx93-adc" @@ -43,6 +44,9 @@ #define IMX93_ADC_MCR_MODE_MASK BIT(29) #define IMX93_ADC_MCR_NSTART_MASK BIT(24) #define IMX93_ADC_MCR_CALSTART_MASK BIT(14) +#define IMX93_ADC_MCR_AVGEN_MASK BIT(13) +#define IMX93_ADC_MCR_NRSMPL_MASK GENMASK(12, 11) +#define IMX93_ADC_MCR_TSAMP_MASK GENMASK(10, 9) #define IMX93_ADC_MCR_ADCLKSE_MASK BIT(8) #define IMX93_ADC_MCR_PWDN_MASK BIT(0) #define IMX93_ADC_MSR_CALFAIL_MASK BIT(30) @@ -145,7 +149,7 @@ static void imx93_adc_config_ad_clk(struct imx93_adc *adc) static int imx93_adc_calibration(struct imx93_adc *adc) { - u32 mcr, msr; + u32 mcr, msr, value; int ret; /* make sure ADC in power down mode */ @@ -156,12 +160,64 @@ static int imx93_adc_calibration(struct imx93_adc *adc) mcr &= ~FIELD_PREP(IMX93_ADC_MCR_ADCLKSE_MASK, 1); writel(mcr, adc->regs + IMX93_ADC_MCR); - imx93_adc_power_up(adc); - /* - * TODO: we use the default TSAMP/NRSMPL/AVGEN in MCR, - * can add the setting of these bit if need in future. + * Set calibration settings: + * - AVGEN: allow averaging of calibration time, + * - NRSMPL: select the number of averaging samples during calibration, + * - TSAMP: specifies the sample time of calibration conversions. */ + if (!device_property_read_u32(adc->dev, "nxp,calib-avg-en", &value)) { + mcr &= ~IMX93_ADC_MCR_AVGEN_MASK; + mcr |= FIELD_PREP(IMX93_ADC_MCR_AVGEN_MASK, value); + } + + if (!device_property_read_u32(adc->dev, "nxp,calib-nr-samples", &value)) { + switch (value) { + case 16: + value = 0x0; + break; + case 32: + value = 0x1; + break; + case 128: + value = 0x2; + break; + case 512: + value = 0x3; + break; + default: + dev_warn(adc->dev, "NRSMPL: wrong value, using default: 512\n"); + value = 0x3; + } + mcr &= ~IMX93_ADC_MCR_NRSMPL_MASK; + mcr |= FIELD_PREP(IMX93_ADC_MCR_NRSMPL_MASK, value); + } + + if (!device_property_read_u32(adc->dev, "nxp,calib-t-samples", &value)) { + switch (value) { + case 8: + value = 0x1; + break; + case 16: + value = 0x2; + break; + case 22: + value = 0x0; + break; + case 32: + value = 0x3; + break; + default: + dev_warn(adc->dev, "TSAMP: wrong value, using default: 22\n"); + value = 0x0; + } + mcr &= ~IMX93_ADC_MCR_TSAMP_MASK; + mcr |= FIELD_PREP(IMX93_ADC_MCR_TSAMP_MASK, value); + } + + writel(mcr, adc->regs + IMX93_ADC_MCR); + + imx93_adc_power_up(adc); /* run calibration */ mcr = readl(adc->regs + IMX93_ADC_MCR); -- 2.25.1
next prev parent reply other threads:[~2024-03-20 10:04 UTC|newest] Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-03-20 10:04 [PATCH 0/2] i.MX93 ADC calibration settings Andrej Picej 2024-03-20 10:04 ` Andrej Picej 2024-03-20 10:04 ` Andrej Picej [this message] 2024-03-20 10:04 ` [PATCH 1/2] iio: adc: imx93: Make calibration properties configurable Andrej Picej 2024-03-24 14:02 ` Jonathan Cameron 2024-03-24 14:02 ` Jonathan Cameron 2024-03-20 10:04 ` [PATCH 2/2] dt-bindings: iio: adc: nxp,imx93-adc.yaml: Add calibration properties Andrej Picej 2024-03-20 10:04 ` Andrej Picej 2024-03-20 10:26 ` Krzysztof Kozlowski 2024-03-20 10:26 ` Krzysztof Kozlowski 2024-03-20 12:05 ` Andrej Picej 2024-03-20 12:05 ` Andrej Picej 2024-03-20 12:15 ` Krzysztof Kozlowski 2024-03-20 12:15 ` Krzysztof Kozlowski 2024-03-22 7:39 ` Andrej Picej 2024-03-22 7:39 ` Andrej Picej 2024-03-22 8:14 ` Krzysztof Kozlowski 2024-03-22 8:14 ` Krzysztof Kozlowski 2024-03-22 9:58 ` Andrej Picej 2024-03-22 9:58 ` Andrej Picej 2024-03-24 13:54 ` Jonathan Cameron 2024-03-24 13:54 ` Jonathan Cameron 2024-03-25 9:58 ` Krzysztof Kozlowski 2024-03-25 9:58 ` Krzysztof Kozlowski 2024-03-25 14:38 ` Jonathan Cameron 2024-03-25 14:38 ` Jonathan Cameron 2024-03-20 21:41 ` Rob Herring 2024-03-20 21:41 ` Rob Herring 2024-03-22 6:47 ` kernel test robot 2024-03-22 6:47 ` kernel test robot 2024-03-24 13:55 ` [PATCH 0/2] i.MX93 ADC calibration settings Jonathan Cameron 2024-03-24 13:55 ` Jonathan Cameron 2024-03-25 8:32 ` Andrej Picej 2024-03-25 8:32 ` Andrej Picej 2024-03-25 8:55 ` [Upstream] " Primoz Fiser 2024-03-25 8:55 ` Primoz Fiser 2024-03-25 14:45 ` Jonathan Cameron 2024-03-25 14:45 ` Jonathan Cameron 2024-03-29 7:58 ` Primoz Fiser 2024-03-29 7:58 ` Primoz Fiser
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