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Wed, 1 May 2019 09:29:09 +0000 From: Rasmus Villemoes To: "devicetree@vger.kernel.org" , Qiang Zhao , Li Yang Subject: [PATCH v2 5/6] soc/fsl/qe: qe.c: support fsl,qe-snums property Thread-Topic: [PATCH v2 5/6] soc/fsl/qe: qe.c: support fsl,qe-snums property Thread-Index: AQHVAABUi/3Pp+xrakGPF1gXQ7udLQ== Date: Wed, 1 May 2019 09:29:09 +0000 Message-ID: <20190501092841.9026-6-rasmus.villemoes@prevas.dk> References: <20190430133615.25721-1-rasmus.villemoes@prevas.dk> <20190501092841.9026-1-rasmus.villemoes@prevas.dk> In-Reply-To: <20190501092841.9026-1-rasmus.villemoes@prevas.dk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HE1PR0102CA0052.eurprd01.prod.exchangelabs.com (2603:10a6:7:7d::29) To VI1PR10MB2672.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:803:e3::20) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Rasmus.Villemoes@prevas.se; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.20.1 x-originating-ip: [81.216.59.226] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: dc97cc28-bef8-46a5-7123-08d6ce1776d9 x-microsoft-antispam: BCL:0; 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Conveniently, of_property_read_variable_u8_array does exactly what we need: If the property fsl,qe-snums is found (and has an allowed size), the array of values get copied to snums, and the return value is the number of snums - we cannot assign directly to num_of_snums, since we need to check whether the return value is negative. Signed-off-by: Rasmus Villemoes Reviewed-by: Christophe Leroy --- drivers/soc/fsl/qe/qe.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c index 0fb8b59f61ad..325d689cbf5c 100644 --- a/drivers/soc/fsl/qe/qe.c +++ b/drivers/soc/fsl/qe/qe.c @@ -283,7 +283,6 @@ EXPORT_SYMBOL(qe_clock_source); */ static void qe_snums_init(void) { - int i; static const u8 snum_init_76[] = { 0x04, 0x05, 0x0C, 0x0D, 0x14, 0x15, 0x1C, 0x1D, 0x24, 0x25, 0x2C, 0x2D, 0x34, 0x35, 0x88, 0x89, @@ -304,7 +303,21 @@ static void qe_snums_init(void) 0x28, 0x29, 0x38, 0x39, 0x48, 0x49, 0x58, 0x59, 0x68, 0x69, 0x78, 0x79, 0x80, 0x81, }; + struct device_node *qe; const u8 *snum_init; + int i; + + bitmap_zero(snum_state, QE_NUM_OF_SNUM); + qe = qe_get_device_node(); + if (qe) { + i = of_property_read_variable_u8_array(qe, "fsl,qe-snums", + snums, 1, QE_NUM_OF_SNUM); + of_node_put(qe); + if (i > 0) { + qe_num_of_snum = i; + return; + } + } qe_num_of_snum = qe_get_num_of_snums(); @@ -313,7 +326,6 @@ static void qe_snums_init(void) else snum_init = snum_init_46; - bitmap_zero(snum_state, QE_NUM_OF_SNUM); memcpy(snums, snum_init, qe_num_of_snum); }