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[2001:14ba:16f3:4a00::1]) by smtp.gmail.com with ESMTPSA id p9-20020a2e8049000000b002a8c7bd0798sm426456ljg.86.2023.04.17.02.20.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 02:20:23 -0700 (PDT) Date: Mon, 17 Apr 2023 12:20:18 +0300 From: Matti Vaittinen To: Matti Vaittinen , Matti Vaittinen Cc: Jonathan Cameron , Lars-Peter Clausen , Matti Vaittinen , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] iio: gts-helpers: fix integration time units Message-ID: References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="UVr4ML6isnaPQ+Co" Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --UVr4ML6isnaPQ+Co Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The IIO ABI mandates expressing integration times in seconds. The GTS helper errorneously uses micro seconds in integration_times_available. Fix this by converting the lists to IIO_VAL_INT_PLUS_MICRO. Signed-off-by: Matti Vaittinen --- drivers/iio/industrialio-gts-helper.c | 43 ++++++++++++++++++++------- 1 file changed, 33 insertions(+), 10 deletions(-) diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrial= io-gts-helper.c index 8bb68975b259..2ab8d2dce019 100644 --- a/drivers/iio/industrialio-gts-helper.c +++ b/drivers/iio/industrialio-gts-helper.c @@ -337,6 +337,17 @@ static int iio_gts_build_avail_scale_table(struct iio_= gts *gts) return ret; } =20 +static void iio_gts_us_to_int_micro(int *time_us, int *int_micro_times, + int num_times) +{ + int i; + + for (i =3D 0; i < num_times; i++) { + int_micro_times[i * 2] =3D time_us[i] / 1000000; + int_micro_times[i * 2 + 1] =3D time_us[i] % 1000000; + } +} + /** * iio_gts_build_avail_time_table - build table of available integration t= imes * @gts: Gain time scale descriptor @@ -351,7 +362,7 @@ static int iio_gts_build_avail_scale_table(struct iio_g= ts *gts) */ static int iio_gts_build_avail_time_table(struct iio_gts *gts) { - int *times, i, j, idx =3D 0; + int *times, i, j, idx =3D 0, *int_micro_times; =20 if (!gts->num_itime) return 0; @@ -360,6 +371,7 @@ static int iio_gts_build_avail_time_table(struct iio_gt= s *gts) if (!times) return -ENOMEM; =20 + /* Sort times from all tables to one and remove duplicates */ for (i =3D gts->num_itime - 1; i >=3D 0; i--) { int new =3D gts->itime_table[i].time_us; @@ -378,13 +390,24 @@ static int iio_gts_build_avail_time_table(struct iio_= gts *gts) } } } - gts->avail_time_tables =3D times; - /* - * This is just to survive a unlikely corner-case where times in the - * given time table were not unique. Else we could just trust the - * gts->num_itime. - */ - gts->num_avail_time_tables =3D idx; + + /* create a list of times formatted as list of IIO_VAL_INT_PLUS_MICRO */ + int_micro_times =3D kcalloc(idx, sizeof(int) * 2, GFP_KERNEL); + if (int_micro_times) { + /* + * This is just to survive a unlikely corner-case where times in + * the given time table were not unique. Else we could just + * trust the gts->num_itime. + */ + gts->num_avail_time_tables =3D idx; + iio_gts_us_to_int_micro(times, int_micro_times, idx); + } + + gts->avail_time_tables =3D int_micro_times; + kfree(times); + + if (!int_micro_times) + return -ENOMEM; =20 return 0; } @@ -683,8 +706,8 @@ int iio_gts_avail_times(struct iio_gts *gts, const int= **vals, int *type, return -EINVAL; =20 *vals =3D gts->avail_time_tables; - *type =3D IIO_VAL_INT; - *length =3D gts->num_avail_time_tables; + *type =3D IIO_VAL_INT_PLUS_MICRO; + *length =3D gts->num_avail_time_tables * 2; =20 return IIO_AVAIL_LIST; } --=20 2.39.2 --=20 Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =3D]=20 --UVr4ML6isnaPQ+Co Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEIx+f8wZb28fLKEhTeFA3/03aocUFAmQ9D1IACgkQeFA3/03a ocUjfQf/dufR2mfyjCq3mWntJ0bmsQuSCWRZdwOY2KayWtdyzuCFCKVhQJuhFh1+ Iyci9B+g62lrrw7lRvqo771plKsJaHlok+uHQN9bAA1cmy3pe8ajETc4btXQVFYf coLM6F1nI23X/pAaGJx+DPeebHqfJdyCXwn12O9wpD4omztYjKfEx1zWqBNqJfCL XqPPQMvwAHXqQo/Bae8EV30ETP85Q9Wev8BFNKMEZXYZUkA2oj6x3vdeGtBWsxIJ 62k4uuLwKY+s8Pi167k6O4UaTL+JihtOryEwATANEUQL7fdcptZwW68oC+LVUDxk Tw50sXtbsPFSpXWuo8ODCWaUC4APZg== =K+89 -----END PGP SIGNATURE----- --UVr4ML6isnaPQ+Co--