From: Jonathan Cameron <jic23@kernel.org>
To: Billy Tsai <billy_tsai@aspeedtech.com>
Cc: <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>,
<BMC-SW@aspeedtech.com>
Subject: Re: [RESEND v4 05/15] iio: adc: aspeed: Refactory model data structure
Date: Sun, 29 Aug 2021 16:13:18 +0100 [thread overview]
Message-ID: <20210829161318.54997151@jic23-huawei> (raw)
In-Reply-To: <20210824091243.9393-6-billy_tsai@aspeedtech.com>
On Tue, 24 Aug 2021 17:12:33 +0800
Billy Tsai <billy_tsai@aspeedtech.com> wrote:
> This patch refactory the model data structure to distinguish the
> function form differnet version of aspeed adc.
from different versions
> - Rename the vref_voltag to vref_fixed and add vref driver data
vref_voltage
> When driver probe will check vref_fixed value and store it
> to vref which isn't const value.
> - Add num_channels
> Make num_channles of iio device can be changed by differnet model_data
different
> - Add need_prescaler flag and scaler_bit_width
> The need_prescaler flag used to tell the driver the clock divider needs
> another prescaler and the scaler_bit_width to set the clock divider
> bitfiled width.
bitfield?
>
> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
> ---
> drivers/iio/adc/aspeed_adc.c | 18 ++++++++++++++----
> 1 file changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c
> index d85aa31ee3b1..f03c7921d534 100644
> --- a/drivers/iio/adc/aspeed_adc.c
> +++ b/drivers/iio/adc/aspeed_adc.c
> @@ -63,8 +63,11 @@ struct aspeed_adc_model_data {
> const char *model_name;
> unsigned int min_sampling_rate; // Hz
> unsigned int max_sampling_rate; // Hz
> - unsigned int vref_voltage; // mV
> + unsigned int vref_fixed; // mV
Whilst here, you could make the name carry the information of the units.
e.g. vref_fixed_mv; That way we always know what the units are without having
to spot this comment.
> bool wait_init_sequence;
> + bool need_prescaler;
> + u8 scaler_bit_width;
> + unsigned int num_channels;
> };
>
> struct aspeed_adc_data {
> @@ -75,6 +78,7 @@ struct aspeed_adc_data {
> struct clk_hw *clk_prescaler;
> struct clk_hw *clk_scaler;
> struct reset_control *rst;
> + int vref;
vref_mv as above perhaps?
> };
>
> #define ASPEED_CHAN(_idx, _data_reg_addr) { \
> @@ -118,7 +122,7 @@ 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_voltage;
> + *val = data->model_data->vref_fixed;
> *val2 = ASPEED_RESOLUTION_BITS;
> return IIO_VAL_FRACTIONAL_LOG2;
>
> @@ -312,17 +316,23 @@ static int aspeed_adc_remove(struct platform_device *pdev)
>
> static const struct aspeed_adc_model_data ast2400_model_data = {
> .model_name = "ast2400-adc",
> - .vref_voltage = 2500, // mV
> + .vref_fixed = 2500, // mV
> .min_sampling_rate = 10000,
> .max_sampling_rate = 500000,
> + .need_prescaler = true,
> + .scaler_bit_width = 10,
> + .num_channels = 16,
> };
>
> static const struct aspeed_adc_model_data ast2500_model_data = {
> .model_name = "ast2500-adc",
> - .vref_voltage = 1800, // mV
> + .vref_fixed = 1800, // mV
> .min_sampling_rate = 1,
> .max_sampling_rate = 1000000,
> .wait_init_sequence = true,
> + .need_prescaler = true,
> + .scaler_bit_width = 10,
> + .num_channels = 16,
> };
>
> static const struct of_device_id aspeed_adc_matches[] = {
next prev parent reply other threads:[~2021-08-29 15:10 UTC|newest]
Thread overview: 30+ 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 ` [RESEND v4 01/15] dt-bindings: iio: adc: Add ast2600-adc bindings Billy Tsai
2021-08-24 9:12 ` [RESEND v4 02/15] iio: adc: aspeed: completes the bitfield declare Billy Tsai
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
2021-08-29 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 ` [RESEND v4 05/15] iio: adc: aspeed: Refactory model data structure Billy Tsai
2021-08-29 15:13 ` Jonathan Cameron [this message]
2021-08-24 9:12 ` [RESEND v4 06/15] iio: adc: aspeed: Add vref config function 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 ` [RESEND v4 08/15] iio: adc: aspeed: Use model_data to set clk scaler 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 ` [RESEND v4 10/15] iio: adc: aspeed: Support ast2600 adc Billy Tsai
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
2021-08-29 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 ` [RESEND v4 13/15] iio: adc: aspeed: Add compensation phase Billy Tsai
2021-08-24 9:12 ` [RESEND v4 14/15] iio: adc: aspeed: Support battery sensing Billy Tsai
2021-08-24 9:12 ` [RESEND v4 15/15] iio: adc: aspeed: Get and set trimming data 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
[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
[not found] ` <202108250003.17P03KRU092474@twspam01.aspeedtech.com>
2021-08-29 15:36 ` [RESEND v4 12/15] iio: adc: aspeed: Add func to set sampling rate Jonathan Cameron
2021-08-30 8:35 ` Billy Tsai
2021-08-30 9:52 ` 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
[not found] ` <202108250005.17P05agj096445@twspam01.aspeedtech.com>
2021-08-29 15:43 ` [RESEND v4 14/15] iio: adc: aspeed: Support battery sensing 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
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