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: [v7 03/11] iio: adc: aspeed: Add vref config function
Date: Wed, 22 Sep 2021 16:15:12 +0800 [thread overview]
Message-ID: <20210922081520.30580-4-billy_tsai@aspeedtech.com> (raw)
In-Reply-To: <20210922081520.30580-1-billy_tsai@aspeedtech.com>
Add the function to check the vref_fixed_mv and set the value to driver
data.
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
---
drivers/iio/adc/aspeed_adc.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c
index cc808ec89a0f..aec335956310 100644
--- a/drivers/iio/adc/aspeed_adc.c
+++ b/drivers/iio/adc/aspeed_adc.c
@@ -130,7 +130,7 @@ static int aspeed_adc_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- *val = data->model_data->vref_fixed_mv;
+ *val = data->vref_mv;
*val2 = ASPEED_RESOLUTION_BITS;
return IIO_VAL_FRACTIONAL_LOG2;
@@ -195,6 +195,17 @@ static const struct iio_info aspeed_adc_iio_info = {
.debugfs_reg_access = aspeed_adc_reg_access,
};
+static int aspeed_adc_vref_config(struct iio_dev *indio_dev)
+{
+ struct aspeed_adc_data *data = iio_priv(indio_dev);
+
+ if (data->model_data->vref_fixed_mv) {
+ data->vref_mv = data->model_data->vref_fixed_mv;
+ return 0;
+ }
+ return 0;
+}
+
static int aspeed_adc_probe(struct platform_device *pdev)
{
struct iio_dev *indio_dev;
@@ -250,6 +261,10 @@ static int aspeed_adc_probe(struct platform_device *pdev)
}
reset_control_deassert(data->rst);
+ ret = aspeed_adc_vref_config(indio_dev);
+ if (ret)
+ goto vref_config_error;
+
if (data->model_data->wait_init_sequence) {
/* Enable engine in normal mode. */
writel(FIELD_PREP(ASPEED_ADC_OP_MODE,
@@ -298,6 +313,7 @@ static int aspeed_adc_probe(struct platform_device *pdev)
clk_disable_unprepare(data->clk_scaler->clk);
clk_enable_error:
poll_timeout_error:
+vref_config_error:
reset_control_assert(data->rst);
reset_error:
clk_hw_unregister_divider(data->clk_scaler);
--
2.25.1
next prev parent reply other threads:[~2021-09-22 8:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 8:15 [v7 00/11] Add support for ast2600 ADC Billy Tsai
2021-09-22 8:15 ` [v7 01/11] iio: adc: aspeed: Keep model data to driver data Billy Tsai
2021-09-22 8:15 ` [v7 02/11] iio: adc: aspeed: Restructure the model data Billy Tsai
2021-09-22 8:15 ` Billy Tsai [this message]
2021-09-22 8:15 ` [v7 04/11] iio: adc: aspeed: Use model_data to set clk scaler Billy Tsai
2021-09-22 8:15 ` [v7 05/11] iio: adc: aspeed: Use devm_add_action_or_reset Billy Tsai
2021-09-22 8:15 ` [v7 06/11] iio: adc: aspeed: Support ast2600 adc Billy Tsai
2021-09-22 8:15 ` [v7 07/11] iio: adc: aspeed: Fix the calculate error of clock Billy Tsai
2021-09-22 8:15 ` [v7 08/11] iio: adc: aspeed: Add func to set sampling rate Billy Tsai
2021-09-22 8:15 ` [v7 09/11] iio: adc: aspeed: Add compensation phase Billy Tsai
2021-09-22 8:15 ` [v7 10/11] iio: adc: aspeed: Support battery sensing Billy Tsai
2021-09-22 8:15 ` [v7 11/11] iio: adc: aspeed: Get and set trimming data Billy Tsai
2021-09-26 11:27 ` [v7 00/11] Add support for ast2600 ADC Jonathan Cameron
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