| 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
| ||
|
Message-ID: <20230119185342.2093323-12-amit.kumar-mahapatra@amd.com>
Date: Fri, 20 Jan 2023 00:23:40 +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>, <thierry.reding@...il.com>,
<jonathanh@...dia.com>, <skomatineni@...dia.com>,
<sumit.semwal@...aro.org>, <christian.koenig@....com>,
<j.neuschaefer@....net>, <vireshk@...nel.org>, <rmfrfs@...il.com>,
<johan@...nel.org>, <elder@...nel.org>,
<gregkh@...uxfoundation.org>
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>, <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>,
<linux-media@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
<greybus-dev@...ts.linaro.org>, <linux-staging@...ts.linux.dev>,
<amitrkcian2002@...il.com>
Subject: [PATCH v2 11/13] 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 {
--
2.17.1
Powered by blists - more mailing lists