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Message-ID: <20250104133804.2a3c2ba3@jic23-huawei>
Date: Sat, 4 Jan 2025 13:38:04 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Nayab Sayed via B4 Relay
<devnull+nayabbasha.sayed.microchip.com@...nel.org>
Cc: nayabbasha.sayed@...rochip.com, Eugen Hristev
<eugen.hristev@...aro.org>, Lars-Peter Clausen <lars@...afoo.de>, Nicolas
Ferre <nicolas.ferre@...rochip.com>, Alexandre Belloni
<alexandre.belloni@...tlin.com>, Claudiu Beznea <claudiu.beznea@...on.dev>,
linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: adc: at91-sama5d2_adc: fix sama7g5 realbits value
On Fri, 03 Jan 2025 16:50:40 +0530
Nayab Sayed via B4 Relay <devnull+nayabbasha.sayed.microchip.com@...nel.org> wrote:
> From: Nayab Sayed <nayabbasha.sayed@...rochip.com>
>
> The number of valid bits in SAMA7G5 ADC channel data register are 16.
> Hence changing the realbits value to 16
>
> Signed-off-by: Nayab Sayed <nayabbasha.sayed@...rochip.com>
Please send an appropriate fixes tag so we know how far to backport.
In reply to this mail is fine (no need to send a v2 for that)
Thanks,
Jonathan
> ---
> drivers/iio/adc/at91-sama5d2_adc.c | 68 ++++++++++++++++++++++----------------
> 1 file changed, 40 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
> index 8e5aaf15a921..c3a1dea2aa82 100644
> --- a/drivers/iio/adc/at91-sama5d2_adc.c
> +++ b/drivers/iio/adc/at91-sama5d2_adc.c
> @@ -329,7 +329,7 @@ static const struct at91_adc_reg_layout sama7g5_layout = {
> #define AT91_HWFIFO_MAX_SIZE_STR "128"
> #define AT91_HWFIFO_MAX_SIZE 128
>
> -#define AT91_SAMA5D2_CHAN_SINGLE(index, num, addr) \
> +#define AT91_SAMA_CHAN_SINGLE(index, num, addr, rbits) \
> { \
> .type = IIO_VOLTAGE, \
> .channel = num, \
> @@ -337,7 +337,7 @@ static const struct at91_adc_reg_layout sama7g5_layout = {
> .scan_index = index, \
> .scan_type = { \
> .sign = 'u', \
> - .realbits = 14, \
> + .realbits = rbits, \
> .storagebits = 16, \
> }, \
> .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
> @@ -350,7 +350,13 @@ static const struct at91_adc_reg_layout sama7g5_layout = {
> .indexed = 1, \
> }
>
> -#define AT91_SAMA5D2_CHAN_DIFF(index, num, num2, addr) \
> +#define AT91_SAMA5D2_CHAN_SINGLE(index, num, addr) \
> + AT91_SAMA_CHAN_SINGLE(index, num, addr, 14)
> +
> +#define AT91_SAMA7G5_CHAN_SINGLE(index, num, addr) \
> + AT91_SAMA_CHAN_SINGLE(index, num, addr, 16)
> +
> +#define AT91_SAMA_CHAN_DIFF(index, num, num2, addr, rbits) \
> { \
> .type = IIO_VOLTAGE, \
> .differential = 1, \
> @@ -360,7 +366,7 @@ static const struct at91_adc_reg_layout sama7g5_layout = {
> .scan_index = index, \
> .scan_type = { \
> .sign = 's', \
> - .realbits = 14, \
> + .realbits = rbits, \
> .storagebits = 16, \
> }, \
> .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
> @@ -373,6 +379,12 @@ static const struct at91_adc_reg_layout sama7g5_layout = {
> .indexed = 1, \
> }
>
> +#define AT91_SAMA5D2_CHAN_DIFF(index, num, num2, addr) \
> + AT91_SAMA_CHAN_DIFF(index, num, num2, addr, 14)
> +
> +#define AT91_SAMA7G5_CHAN_DIFF(index, num, num2, addr) \
> + AT91_SAMA_CHAN_DIFF(index, num, num2, addr, 16)
> +
> #define AT91_SAMA5D2_CHAN_TOUCH(num, name, mod) \
> { \
> .type = IIO_POSITIONRELATIVE, \
> @@ -666,30 +678,30 @@ static const struct iio_chan_spec at91_sama5d2_adc_channels[] = {
> };
>
> static const struct iio_chan_spec at91_sama7g5_adc_channels[] = {
> - AT91_SAMA5D2_CHAN_SINGLE(0, 0, 0x60),
> - AT91_SAMA5D2_CHAN_SINGLE(1, 1, 0x64),
> - AT91_SAMA5D2_CHAN_SINGLE(2, 2, 0x68),
> - AT91_SAMA5D2_CHAN_SINGLE(3, 3, 0x6c),
> - AT91_SAMA5D2_CHAN_SINGLE(4, 4, 0x70),
> - AT91_SAMA5D2_CHAN_SINGLE(5, 5, 0x74),
> - AT91_SAMA5D2_CHAN_SINGLE(6, 6, 0x78),
> - AT91_SAMA5D2_CHAN_SINGLE(7, 7, 0x7c),
> - AT91_SAMA5D2_CHAN_SINGLE(8, 8, 0x80),
> - AT91_SAMA5D2_CHAN_SINGLE(9, 9, 0x84),
> - AT91_SAMA5D2_CHAN_SINGLE(10, 10, 0x88),
> - AT91_SAMA5D2_CHAN_SINGLE(11, 11, 0x8c),
> - AT91_SAMA5D2_CHAN_SINGLE(12, 12, 0x90),
> - AT91_SAMA5D2_CHAN_SINGLE(13, 13, 0x94),
> - AT91_SAMA5D2_CHAN_SINGLE(14, 14, 0x98),
> - AT91_SAMA5D2_CHAN_SINGLE(15, 15, 0x9c),
> - AT91_SAMA5D2_CHAN_DIFF(16, 0, 1, 0x60),
> - AT91_SAMA5D2_CHAN_DIFF(17, 2, 3, 0x68),
> - AT91_SAMA5D2_CHAN_DIFF(18, 4, 5, 0x70),
> - AT91_SAMA5D2_CHAN_DIFF(19, 6, 7, 0x78),
> - AT91_SAMA5D2_CHAN_DIFF(20, 8, 9, 0x80),
> - AT91_SAMA5D2_CHAN_DIFF(21, 10, 11, 0x88),
> - AT91_SAMA5D2_CHAN_DIFF(22, 12, 13, 0x90),
> - AT91_SAMA5D2_CHAN_DIFF(23, 14, 15, 0x98),
> + AT91_SAMA7G5_CHAN_SINGLE(0, 0, 0x60),
> + AT91_SAMA7G5_CHAN_SINGLE(1, 1, 0x64),
> + AT91_SAMA7G5_CHAN_SINGLE(2, 2, 0x68),
> + AT91_SAMA7G5_CHAN_SINGLE(3, 3, 0x6c),
> + AT91_SAMA7G5_CHAN_SINGLE(4, 4, 0x70),
> + AT91_SAMA7G5_CHAN_SINGLE(5, 5, 0x74),
> + AT91_SAMA7G5_CHAN_SINGLE(6, 6, 0x78),
> + AT91_SAMA7G5_CHAN_SINGLE(7, 7, 0x7c),
> + AT91_SAMA7G5_CHAN_SINGLE(8, 8, 0x80),
> + AT91_SAMA7G5_CHAN_SINGLE(9, 9, 0x84),
> + AT91_SAMA7G5_CHAN_SINGLE(10, 10, 0x88),
> + AT91_SAMA7G5_CHAN_SINGLE(11, 11, 0x8c),
> + AT91_SAMA7G5_CHAN_SINGLE(12, 12, 0x90),
> + AT91_SAMA7G5_CHAN_SINGLE(13, 13, 0x94),
> + AT91_SAMA7G5_CHAN_SINGLE(14, 14, 0x98),
> + AT91_SAMA7G5_CHAN_SINGLE(15, 15, 0x9c),
> + AT91_SAMA7G5_CHAN_DIFF(16, 0, 1, 0x60),
> + AT91_SAMA7G5_CHAN_DIFF(17, 2, 3, 0x68),
> + AT91_SAMA7G5_CHAN_DIFF(18, 4, 5, 0x70),
> + AT91_SAMA7G5_CHAN_DIFF(19, 6, 7, 0x78),
> + AT91_SAMA7G5_CHAN_DIFF(20, 8, 9, 0x80),
> + AT91_SAMA7G5_CHAN_DIFF(21, 10, 11, 0x88),
> + AT91_SAMA7G5_CHAN_DIFF(22, 12, 13, 0x90),
> + AT91_SAMA7G5_CHAN_DIFF(23, 14, 15, 0x98),
> IIO_CHAN_SOFT_TIMESTAMP(24),
> AT91_SAMA5D2_CHAN_TEMP(AT91_SAMA7G5_ADC_TEMP_CHANNEL, "temp", 0xdc),
> };
>
> ---
> base-commit: 0bc21e701a6ffacfdde7f04f87d664d82e8a13bf
> change-id: 20250103-fix-sama7g5-adc-realbits-37f62f8925d7
>
> Best regards,
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