lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20230210193647.4159467-14-amit.kumar-mahapatra@amd.com>
Date:   Sat, 11 Feb 2023 01:06:44 +0530
From:   Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>
To:     <broonie@...nel.org>, <miquel.raynal@...tlin.com>,
        <richard@....at>, <vigneshr@...com>, <jic23@...nel.org>,
        <tudor.ambarus@...rochip.com>, <pratyush@...nel.org>,
        <sanju.mehta@....com>, <chin-ting_kuo@...eedtech.com>,
        <clg@...d.org>, <kdasu.kdev@...il.com>, <f.fainelli@...il.com>,
        <rjui@...adcom.com>, <sbranden@...adcom.com>,
        <eajames@...ux.ibm.com>, <olteanv@...il.com>, <han.xu@....com>,
        <john.garry@...wei.com>, <shawnguo@...nel.org>,
        <s.hauer@...gutronix.de>, <narmstrong@...libre.com>,
        <khilman@...libre.com>, <matthias.bgg@...il.com>,
        <haibo.chen@....com>, <linus.walleij@...aro.org>,
        <daniel@...que.org>, <haojian.zhuang@...il.com>,
        <robert.jarzmik@...e.fr>, <agross@...nel.org>,
        <bjorn.andersson@...aro.org>, <heiko@...ech.de>,
        <krzysztof.kozlowski@...aro.org>, <andi@...zian.org>,
        <mcoquelin.stm32@...il.com>, <alexandre.torgue@...s.st.com>,
        <wens@...e.org>, <jernej.skrabec@...il.com>, <samuel@...lland.org>,
        <masahisa.kojima@...aro.org>, <jaswinder.singh@...aro.org>,
        <rostedt@...dmis.org>, <mingo@...hat.com>,
        <l.stelmach@...sung.com>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <alex.aring@...il.com>, <stefan@...enfreihafen.org>,
        <kvalo@...nel.org>, <james.schulman@...rus.com>,
        <david.rhodes@...rus.com>, <tanureal@...nsource.cirrus.com>,
        <rf@...nsource.cirrus.com>, <perex@...ex.cz>, <tiwai@...e.com>,
        <npiggin@...il.com>, <christophe.leroy@...roup.eu>,
        <mpe@...erman.id.au>, <oss@...error.net>, <windhl@....com>,
        <yangyingliang@...wei.com>
CC:     <git@....com>, <linux-spi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <joel@....id.au>,
        <andrew@...id.au>, <radu_nicolae.pirea@....ro>,
        <nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <claudiu.beznea@...rochip.com>,
        <bcm-kernel-feedback-list@...adcom.com>, <fancer.lancer@...il.com>,
        <kernel@...gutronix.de>, <festevam@...il.com>, <linux-imx@....com>,
        <jbrunet@...libre.com>, <martin.blumenstingl@...glemail.com>,
        <avifishman70@...il.com>, <tmaimon77@...il.com>,
        <tali.perry1@...il.com>, <venture@...gle.com>, <yuenn@...gle.com>,
        <benjaminfair@...gle.com>, <yogeshgaur.83@...il.com>,
        <konrad.dybcio@...ainline.org>, <alim.akhtar@...sung.com>,
        <ldewangan@...dia.com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <michal.simek@....com>,
        <linux-aspeed@...ts.ozlabs.org>, <openbmc@...ts.ozlabs.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-rpi-kernel@...ts.infradead.org>,
        <linux-amlogic@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-msm@...r.kernel.org>,
        <linux-rockchip@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-sunxi@...ts.linux.dev>, <linux-tegra@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-wpan@...r.kernel.org>,
        <libertas-dev@...ts.infradead.org>,
        <linux-wireless@...r.kernel.org>, <linux-mtd@...ts.infradead.org>,
        <lars@...afoo.de>, <Michael.Hennerich@...log.com>,
        <linux-iio@...r.kernel.org>, <michael@...le.cc>,
        <palmer@...belt.com>, <linux-riscv@...ts.infradead.org>,
        <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
        <linuxppc-dev@...ts.ozlabs.org>, <amitrkcian2002@...il.com>,
        Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>
Subject: [PATCH v4 13/15] spi: spi-zynqmp-gqspi: Add stacked memories support in GQSPI driver

GQSPI supports two chip select CS0 & CS1. Update the driver to
assert/de-assert the appropriate chip select as per the bits set in
qspi->cs_index_mask.

Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>
---
 drivers/spi/spi-zynqmp-gqspi.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index 319cdd5a0bdc..4759f704bf5c 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -156,6 +156,9 @@
 #define GQSPI_FREQ_100MHZ	100000000
 #define GQSPI_FREQ_150MHZ	150000000
 
+#define GQSPI_SELECT_LOWER_CS  BIT(0)
+#define GQSPI_SELECT_UPPER_CS  BIT(1)
+
 #define SPI_AUTOSUSPEND_TIMEOUT		3000
 enum mode_type {GQSPI_MODE_IO, GQSPI_MODE_DMA};
 
@@ -467,15 +470,17 @@ static void zynqmp_qspi_chipselect(struct spi_device *qspi, bool is_high)
 
 	genfifoentry |= GQSPI_GENFIFO_MODE_SPI;
 
+	if (qspi->cs_index_mask & GQSPI_SELECT_UPPER_CS) {
+		zynqmp_gqspi_selectslave(xqspi,
+					 GQSPI_SELECT_FLASH_CS_UPPER,
+					 GQSPI_SELECT_FLASH_BUS_LOWER);
+	} else if (qspi->cs_index_mask & GQSPI_SELECT_LOWER_CS) {
+		zynqmp_gqspi_selectslave(xqspi,
+					 GQSPI_SELECT_FLASH_CS_LOWER,
+					 GQSPI_SELECT_FLASH_BUS_LOWER);
+	}
+	genfifoentry |= xqspi->genfifobus;
 	if (!is_high) {
-		if (!spi_get_chipselect(qspi, 0)) {
-			xqspi->genfifobus = GQSPI_GENFIFO_BUS_LOWER;
-			xqspi->genfifocs = GQSPI_GENFIFO_CS_LOWER;
-		} else {
-			xqspi->genfifobus = GQSPI_GENFIFO_BUS_UPPER;
-			xqspi->genfifocs = GQSPI_GENFIFO_CS_UPPER;
-		}
-		genfifoentry |= xqspi->genfifobus;
 		genfifoentry |= xqspi->genfifocs;
 		genfifoentry |= GQSPI_GENFIFO_CS_SETUP;
 	} else {
-- 
2.25.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ