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Fri, 10 Feb 2023 13:42:34 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v4 13/15] spi: spi-zynqmp-gqspi: Add stacked memories support in GQSPI driver Date: Sat, 11 Feb 2023 01:06:44 +0530 Message-ID: <20230210193647.4159467-14-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230210193647.4159467-1-amit.kumar-mahapatra@amd.com> References: <20230210193647.4159467-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT093:EE_|MN0PR12MB6128:EE_ X-MS-Office365-Filtering-Correlation-Id: f558be0e-726f-4f70-2ccf-08db0b9f0541 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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Ip=[165.204.84.17]; Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT093.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB6128 X-MailFrom: amit.kumar-mahapatra@amd.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1 Message-ID-Hash: 5TD2XVVHMY426EWEWH7OFPRS6G46LFYU X-Message-ID-Hash: 5TD2XVVHMY426EWEWH7OFPRS6G46LFYU X-Mailman-Approved-At: Thu, 16 Feb 2023 14:54:47 +0000 CC: git@amd.com, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, joel@jms.id.au, andrew@aj.id.au, radu_nicolae.pirea@upb.ro, nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com, claudiu.beznea@microchip.com, bcm-kernel-feedback-list@broadcom.com, fancer.lancer@gmail.com, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, jbrunet@baylibre.com, martin.blumenstingl@googlemail.com, avifishman70@gmail.com, tmaimon77@gmail.com, tali.perry1@gmail.com, venture@google.com, yuenn@google.com, benjaminfair@google.com, yogeshgaur.83@gmail.com, konrad.dybcio@somainline.org, alim.akhtar@samsung.com, ldewangan@nvidia.com, thierry.reding@gmail.com, jonathanh@nvidia.com, michal.simek@amd.com, linux-aspeed@lists.ozlabs.org, openbmc@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, netdev@vger.kernel.org, linux-wpan@vger.kernel.org, libertas-dev@lists.infradead.org, linux-wireless@vger.kernel.org, linux-mtd@lists.infradead.org, lars@metafoo.de, Michael.Hennerich@analog.com, linux-iio@vger.kernel.org, michael@walle.cc, palmer@dabbelt.com, linux-riscv@lists.infradead.org, alsa-devel@alsa-project.org, patches@opensource.cirrus.com, linuxppc-dev@lists.ozlabs.org, amitrkcian2002@gmail.com, Amit Kumar Mahapatra X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: 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 --- 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 {