From: Billy Tsai <billy_tsai@aspeedtech.com> To: <jic23@kernel.org>, <lars@metafoo.de>, <pmeerw@pmeerw.net>, <robh+dt@kernel.org>, <joel@jms.id.au>, <andrew@aj.id.au>, <p.zabel@pengutronix.de>, <lgirdwood@gmail.com>, <broonie@kernel.org>, <linux-iio@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-aspeed@lists.ozlabs.org>, <linux-kernel@vger.kernel.org> Cc: <BMC-SW@aspeedtech.com> Subject: [RESEND v4 10/15] iio: adc: aspeed: Support ast2600 adc. Date: Tue, 24 Aug 2021 17:12:38 +0800 [thread overview] Message-ID: <20210824091243.9393-11-billy_tsai@aspeedtech.com> (raw) In-Reply-To: <20210824091243.9393-1-billy_tsai@aspeedtech.com> Make driver to support ast2600 adc device. - Use shared reset controller - Complete the vref configure function - Add the model data for ast2600 adc Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com> --- drivers/iio/adc/aspeed_adc.c | 106 +++++++++++++++++++++++++++++++++-- 1 file changed, 100 insertions(+), 6 deletions(-) diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index 1c87e12a0cab..ea3e9a52fcc9 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Aspeed AST2400/2500 ADC + * Aspeed AST2400/2500/2600 ADC * * Copyright (C) 2017 Google, Inc. * Copyright (C) 2021 Aspeed Technology Inc. @@ -14,6 +14,7 @@ #include <linux/module.h> #include <linux/of_platform.h> #include <linux/platform_device.h> +#include <linux/regulator/consumer.h> #include <linux/reset.h> #include <linux/spinlock.h> #include <linux/types.h> @@ -73,6 +74,7 @@ struct aspeed_adc_model_data { struct aspeed_adc_data { struct device *dev; const struct aspeed_adc_model_data *model_data; + struct regulator *regulator; void __iomem *base; spinlock_t clk_lock; struct clk_hw *clk_prescaler; @@ -208,14 +210,80 @@ static void aspeed_adc_clk_disable_unprepare(void *data) clk_disable_unprepare(clk); } +static void aspeed_adc_reg_disable(void *data) +{ + struct regulator *reg = data; + + regulator_disable(reg); +} + static int aspeed_adc_vref_config(struct iio_dev *indio_dev) { struct aspeed_adc_data *data = iio_priv(indio_dev); + int ret; + u32 adc_engine_control_reg_val = + readl(data->base + ASPEED_REG_ENGINE_CONTROL); if (data->model_data->vref_fixed) { data->vref = data->model_data->vref_fixed; return 0; } + + data->regulator = devm_regulator_get_optional(data->dev, "vref"); + if (!IS_ERR(data->regulator)) { + ret = regulator_enable(data->regulator); + if (ret) + return ret; + ret = devm_add_action_or_reset( + data->dev, aspeed_adc_reg_disable, data->regulator); + if (ret) + return ret; + data->vref = regulator_get_voltage(data->regulator); + /* Conversion from uV to mV */ + data->vref /= 1000; + if ((data->vref >= 1550) && (data->vref <= 2700)) + writel(adc_engine_control_reg_val | + FIELD_PREP( + ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_EXT_HIGH), + data->base + ASPEED_REG_ENGINE_CONTROL); + else if ((data->vref >= 900) && (data->vref <= 1650)) + writel(adc_engine_control_reg_val | + FIELD_PREP( + ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_EXT_LOW), + data->base + ASPEED_REG_ENGINE_CONTROL); + else { + dev_err(data->dev, "Regulator voltage %d not support", + data->vref); + return -EOPNOTSUPP; + } + } else { + if (PTR_ERR(data->regulator) != -ENODEV) + return PTR_ERR(data->regulator); + ret = of_property_read_u32(data->dev->of_node, + "aspeed,int_vref_mv", &data->vref); + if (ret < 0) { + dev_warn(data->dev, + "Using default vref: internal 2500 mv"); + data->vref = 2500; + } + if (data->vref == 2500) + writel(adc_engine_control_reg_val | + FIELD_PREP(ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_2500mV), + data->base + ASPEED_REG_ENGINE_CONTROL); + else if (data->vref == 1200) + writel(adc_engine_control_reg_val | + FIELD_PREP(ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_1200mV), + data->base + ASPEED_REG_ENGINE_CONTROL); + else { + dev_err(data->dev, "Voltage %d not support", data->vref); + return -EOPNOTSUPP; + } + } + return 0; } @@ -279,7 +347,7 @@ static int aspeed_adc_probe(struct platform_device *pdev) if (ret) return ret; - data->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); + data->rst = devm_reset_control_get_shared(&pdev->dev, NULL); if (IS_ERR(data->rst)) { dev_err(&pdev->dev, "invalid or missing reset controller device tree entry"); @@ -297,10 +365,14 @@ static int aspeed_adc_probe(struct platform_device *pdev) return ret; if (data->model_data->wait_init_sequence) { + adc_engine_control_reg_val = + readl(data->base + ASPEED_REG_ENGINE_CONTROL); + adc_engine_control_reg_val |= + FIELD_PREP(ASPEED_ADC_OP_MODE, + ASPEED_ADC_OP_MODE_NORMAL) | + ASPEED_ADC_ENGINE_ENABLE; /* Enable engine in normal mode. */ - writel(FIELD_PREP(ASPEED_ADC_OP_MODE, - ASPEED_ADC_OP_MODE_NORMAL) | - ASPEED_ADC_ENGINE_ENABLE, + writel(adc_engine_control_reg_val, data->base + ASPEED_REG_ENGINE_CONTROL); /* Wait for initial sequence complete. */ @@ -326,6 +398,8 @@ static int aspeed_adc_probe(struct platform_device *pdev) return ret; adc_engine_control_reg_val = + readl(data->base + ASPEED_REG_ENGINE_CONTROL); + adc_engine_control_reg_val |= ASPEED_ADC_CTRL_CHANNEL | FIELD_PREP(ASPEED_ADC_OP_MODE, ASPEED_ADC_OP_MODE_NORMAL) | ASPEED_ADC_ENGINE_ENABLE; @@ -376,9 +450,29 @@ static const struct aspeed_adc_model_data ast2500_model_data = { .num_channels = 16, }; +static const struct aspeed_adc_model_data ast2600_adc0_model_data = { + .model_name = "ast2600-adc0", + .min_sampling_rate = 10000, + .max_sampling_rate = 500000, + .wait_init_sequence = true, + .scaler_bit_width = 16, + .num_channels = 8, +}; + +static const struct aspeed_adc_model_data ast2600_adc1_model_data = { + .model_name = "ast2600-adc1", + .min_sampling_rate = 10000, + .max_sampling_rate = 500000, + .wait_init_sequence = true, + .scaler_bit_width = 16, + .num_channels = 8, +}; + static const struct of_device_id aspeed_adc_matches[] = { { .compatible = "aspeed,ast2400-adc", .data = &ast2400_model_data }, { .compatible = "aspeed,ast2500-adc", .data = &ast2500_model_data }, + { .compatible = "aspeed,ast2600-adc0", .data = &ast2600_adc0_model_data }, + { .compatible = "aspeed,ast2600-adc1", .data = &ast2600_adc1_model_data }, {}, }; MODULE_DEVICE_TABLE(of, aspeed_adc_matches); @@ -395,5 +489,5 @@ static struct platform_driver aspeed_adc_driver = { module_platform_driver(aspeed_adc_driver); MODULE_AUTHOR("Rick Altherr <raltherr@google.com>"); -MODULE_DESCRIPTION("Aspeed AST2400/2500 ADC Driver"); +MODULE_DESCRIPTION("Aspeed AST2400/2500/2600 ADC Driver"); MODULE_LICENSE("GPL"); -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Billy Tsai <billy_tsai@aspeedtech.com> To: <jic23@kernel.org>, <lars@metafoo.de>, <pmeerw@pmeerw.net>, <robh+dt@kernel.org>, <joel@jms.id.au>, <andrew@aj.id.au>, <p.zabel@pengutronix.de>, <lgirdwood@gmail.com>, <broonie@kernel.org>, <linux-iio@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-aspeed@lists.ozlabs.org>, <linux-kernel@vger.kernel.org> Cc: <BMC-SW@aspeedtech.com> Subject: [RESEND v4 10/15] iio: adc: aspeed: Support ast2600 adc. Date: Tue, 24 Aug 2021 17:12:38 +0800 [thread overview] Message-ID: <20210824091243.9393-11-billy_tsai@aspeedtech.com> (raw) In-Reply-To: <20210824091243.9393-1-billy_tsai@aspeedtech.com> Make driver to support ast2600 adc device. - Use shared reset controller - Complete the vref configure function - Add the model data for ast2600 adc Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com> --- drivers/iio/adc/aspeed_adc.c | 106 +++++++++++++++++++++++++++++++++-- 1 file changed, 100 insertions(+), 6 deletions(-) diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index 1c87e12a0cab..ea3e9a52fcc9 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Aspeed AST2400/2500 ADC + * Aspeed AST2400/2500/2600 ADC * * Copyright (C) 2017 Google, Inc. * Copyright (C) 2021 Aspeed Technology Inc. @@ -14,6 +14,7 @@ #include <linux/module.h> #include <linux/of_platform.h> #include <linux/platform_device.h> +#include <linux/regulator/consumer.h> #include <linux/reset.h> #include <linux/spinlock.h> #include <linux/types.h> @@ -73,6 +74,7 @@ struct aspeed_adc_model_data { struct aspeed_adc_data { struct device *dev; const struct aspeed_adc_model_data *model_data; + struct regulator *regulator; void __iomem *base; spinlock_t clk_lock; struct clk_hw *clk_prescaler; @@ -208,14 +210,80 @@ static void aspeed_adc_clk_disable_unprepare(void *data) clk_disable_unprepare(clk); } +static void aspeed_adc_reg_disable(void *data) +{ + struct regulator *reg = data; + + regulator_disable(reg); +} + static int aspeed_adc_vref_config(struct iio_dev *indio_dev) { struct aspeed_adc_data *data = iio_priv(indio_dev); + int ret; + u32 adc_engine_control_reg_val = + readl(data->base + ASPEED_REG_ENGINE_CONTROL); if (data->model_data->vref_fixed) { data->vref = data->model_data->vref_fixed; return 0; } + + data->regulator = devm_regulator_get_optional(data->dev, "vref"); + if (!IS_ERR(data->regulator)) { + ret = regulator_enable(data->regulator); + if (ret) + return ret; + ret = devm_add_action_or_reset( + data->dev, aspeed_adc_reg_disable, data->regulator); + if (ret) + return ret; + data->vref = regulator_get_voltage(data->regulator); + /* Conversion from uV to mV */ + data->vref /= 1000; + if ((data->vref >= 1550) && (data->vref <= 2700)) + writel(adc_engine_control_reg_val | + FIELD_PREP( + ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_EXT_HIGH), + data->base + ASPEED_REG_ENGINE_CONTROL); + else if ((data->vref >= 900) && (data->vref <= 1650)) + writel(adc_engine_control_reg_val | + FIELD_PREP( + ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_EXT_LOW), + data->base + ASPEED_REG_ENGINE_CONTROL); + else { + dev_err(data->dev, "Regulator voltage %d not support", + data->vref); + return -EOPNOTSUPP; + } + } else { + if (PTR_ERR(data->regulator) != -ENODEV) + return PTR_ERR(data->regulator); + ret = of_property_read_u32(data->dev->of_node, + "aspeed,int_vref_mv", &data->vref); + if (ret < 0) { + dev_warn(data->dev, + "Using default vref: internal 2500 mv"); + data->vref = 2500; + } + if (data->vref == 2500) + writel(adc_engine_control_reg_val | + FIELD_PREP(ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_2500mV), + data->base + ASPEED_REG_ENGINE_CONTROL); + else if (data->vref == 1200) + writel(adc_engine_control_reg_val | + FIELD_PREP(ASPEED_ADC_REF_VOLTAGE, + ASPEED_ADC_REF_VOLTAGE_1200mV), + data->base + ASPEED_REG_ENGINE_CONTROL); + else { + dev_err(data->dev, "Voltage %d not support", data->vref); + return -EOPNOTSUPP; + } + } + return 0; } @@ -279,7 +347,7 @@ static int aspeed_adc_probe(struct platform_device *pdev) if (ret) return ret; - data->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); + data->rst = devm_reset_control_get_shared(&pdev->dev, NULL); if (IS_ERR(data->rst)) { dev_err(&pdev->dev, "invalid or missing reset controller device tree entry"); @@ -297,10 +365,14 @@ static int aspeed_adc_probe(struct platform_device *pdev) return ret; if (data->model_data->wait_init_sequence) { + adc_engine_control_reg_val = + readl(data->base + ASPEED_REG_ENGINE_CONTROL); + adc_engine_control_reg_val |= + FIELD_PREP(ASPEED_ADC_OP_MODE, + ASPEED_ADC_OP_MODE_NORMAL) | + ASPEED_ADC_ENGINE_ENABLE; /* Enable engine in normal mode. */ - writel(FIELD_PREP(ASPEED_ADC_OP_MODE, - ASPEED_ADC_OP_MODE_NORMAL) | - ASPEED_ADC_ENGINE_ENABLE, + writel(adc_engine_control_reg_val, data->base + ASPEED_REG_ENGINE_CONTROL); /* Wait for initial sequence complete. */ @@ -326,6 +398,8 @@ static int aspeed_adc_probe(struct platform_device *pdev) return ret; adc_engine_control_reg_val = + readl(data->base + ASPEED_REG_ENGINE_CONTROL); + adc_engine_control_reg_val |= ASPEED_ADC_CTRL_CHANNEL | FIELD_PREP(ASPEED_ADC_OP_MODE, ASPEED_ADC_OP_MODE_NORMAL) | ASPEED_ADC_ENGINE_ENABLE; @@ -376,9 +450,29 @@ static const struct aspeed_adc_model_data ast2500_model_data = { .num_channels = 16, }; +static const struct aspeed_adc_model_data ast2600_adc0_model_data = { + .model_name = "ast2600-adc0", + .min_sampling_rate = 10000, + .max_sampling_rate = 500000, + .wait_init_sequence = true, + .scaler_bit_width = 16, + .num_channels = 8, +}; + +static const struct aspeed_adc_model_data ast2600_adc1_model_data = { + .model_name = "ast2600-adc1", + .min_sampling_rate = 10000, + .max_sampling_rate = 500000, + .wait_init_sequence = true, + .scaler_bit_width = 16, + .num_channels = 8, +}; + static const struct of_device_id aspeed_adc_matches[] = { { .compatible = "aspeed,ast2400-adc", .data = &ast2400_model_data }, { .compatible = "aspeed,ast2500-adc", .data = &ast2500_model_data }, + { .compatible = "aspeed,ast2600-adc0", .data = &ast2600_adc0_model_data }, + { .compatible = "aspeed,ast2600-adc1", .data = &ast2600_adc1_model_data }, {}, }; MODULE_DEVICE_TABLE(of, aspeed_adc_matches); @@ -395,5 +489,5 @@ static struct platform_driver aspeed_adc_driver = { module_platform_driver(aspeed_adc_driver); MODULE_AUTHOR("Rick Altherr <raltherr@google.com>"); -MODULE_DESCRIPTION("Aspeed AST2400/2500 ADC Driver"); +MODULE_DESCRIPTION("Aspeed AST2400/2500/2600 ADC Driver"); MODULE_LICENSE("GPL"); -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-08-24 9:15 UTC|newest] Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-24 9:12 [RESEND v4 00/15] Add support for ast2600 ADC Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 01/15] dt-bindings: iio: adc: Add ast2600-adc bindings Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 02/15] iio: adc: aspeed: completes the bitfield declare Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-29 15:07 ` Jonathan Cameron 2021-08-29 15:07 ` Jonathan Cameron 2021-08-24 9:12 ` [RESEND v4 03/15] iio: adc: aspeed: set driver data when adc probe Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-29 15:08 ` Jonathan Cameron 2021-08-29 15:08 ` Jonathan Cameron 2021-08-24 9:12 ` [RESEND v4 04/15] iio: adc: aspeed: Keep model data to driver data Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 05/15] iio: adc: aspeed: Refactory model data structure Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-29 15:13 ` Jonathan Cameron 2021-08-29 15:13 ` Jonathan Cameron 2021-08-24 9:12 ` [RESEND v4 06/15] iio: adc: aspeed: Add vref config function Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 07/15] iio: adc: aspeed: Set num_channels with model data Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 08/15] iio: adc: aspeed: Use model_data to set clk scaler Billy Tsai 2021-08-25 11:52 ` kernel test robot 2021-08-25 11:52 ` kernel test robot 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 09/15] iio: adc: aspeed: Use devm_add_action_or_reset Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai [this message] 2021-08-24 9:12 ` [RESEND v4 10/15] iio: adc: aspeed: Support ast2600 adc Billy Tsai 2021-08-29 15:31 ` Jonathan Cameron 2021-08-29 15:31 ` Jonathan Cameron 2021-08-24 9:12 ` [RESEND v4 11/15] iio: adc: aspeed: Fix the calculate error of clock Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-29 15:33 ` Jonathan Cameron 2021-08-29 15:33 ` Jonathan Cameron 2021-08-24 9:12 ` [RESEND v4 12/15] iio: adc: aspeed: Add func to set sampling rate Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-29 15:36 ` Jonathan Cameron 2021-08-29 15:36 ` Jonathan Cameron 2021-08-30 8:35 ` Billy Tsai 2021-08-30 8:35 ` Billy Tsai 2021-08-30 9:52 ` Jonathan Cameron 2021-08-30 9:52 ` Jonathan Cameron 2021-08-24 9:12 ` [RESEND v4 13/15] iio: adc: aspeed: Add compensation phase Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 14/15] iio: adc: aspeed: Support battery sensing Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-29 15:43 ` Jonathan Cameron 2021-08-29 15:43 ` Jonathan Cameron 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` [RESEND v4 15/15] iio: adc: aspeed: Get and set trimming data Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai 2021-08-24 9:12 ` Billy Tsai [not found] ` <202108250006.17P06IgG097015@twspam01.aspeedtech.com> 2021-08-29 15:20 ` [RESEND v4 08/15] iio: adc: aspeed: Use model_data to set clk scaler Jonathan Cameron 2021-08-29 15:20 ` Jonathan Cameron [not found] ` <202108250004.17P04FdD094082@twspam01.aspeedtech.com> 2021-08-29 15:25 ` [RESEND v4 09/15] iio: adc: aspeed: Use devm_add_action_or_reset Jonathan Cameron 2021-08-29 15:25 ` Jonathan Cameron [not found] ` <202108250006.17P066YP096721@twspam01.aspeedtech.com> 2021-08-29 15:39 ` [RESEND v4 13/15] iio: adc: aspeed: Add compensation phase Jonathan Cameron 2021-08-29 15:39 ` Jonathan Cameron [not found] ` <202108250007.17P07NFj097422@twspam01.aspeedtech.com> 2021-08-29 15:45 ` [RESEND v4 15/15] iio: adc: aspeed: Get and set trimming data Jonathan Cameron 2021-08-29 15:45 ` Jonathan Cameron
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