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[93.181.165.181]) by smtp.gmail.com with ESMTPSA id o4-v6sm2438561ljc.67.2018.08.06.15.29.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 06 Aug 2018 15:29:31 -0700 (PDT) From: Janusz Krzysztofik To: Boris Brezillon , Linus Walleij Cc: Jonathan Corbet , Miquel Raynal , Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut , Tony Lindgren , Aaro Koskinen , linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-mtd@lists.infradead.org, linux-doc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Janusz Krzysztofik Subject: [RFC PATCH v2 03/12] ARM: OMAP1: ams-delta: Provide GPIO lookup table for NAND data port Date: Tue, 7 Aug 2018 00:29:09 +0200 Message-Id: <20180806222918.12644-4-jmkrzyszt@gmail.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20180806222918.12644-1-jmkrzyszt@gmail.com> References: <20180718235710.18242-1-jmkrzyszt@gmail.com> <20180806222918.12644-1-jmkrzyszt@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Data port used by Amstrad Delta NAND driver is actually an OMAP MPUIO device, already under control of gpio-omap driver. The NAND driver gets access to the port by ioremapping it and performs read/write operations. That is done without any proteciton from other users legally manipulating the port pins over GPIO API. The plan is to convert the driver to access the port over GPIO consumer API. Before that is implemented, the driver can already obtain exclusive access to the port by requesting an array of its GPIO descriptors. Add respective entries to the NAND GPIO lookup table. Signed-off-by: Janusz Krzysztofik --- arch/arm/mach-omap1/board-ams-delta.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c index eedacdfe9725..16f7bbe47607 100644 --- a/arch/arm/mach-omap1/board-ams-delta.c +++ b/arch/arm/mach-omap1/board-ams-delta.c @@ -337,7 +337,8 @@ static struct platform_device ams_delta_nand_device = { .resource = ams_delta_nand_resources, }; -#define OMAP_GPIO_LABEL "gpio-0-15" +#define OMAP_GPIO_LABEL "gpio-0-15" +#define OMAP_MPUIO_LABEL "mpuio" static struct gpiod_lookup_table ams_delta_nand_gpio_table = { .table = { @@ -349,6 +350,14 @@ static struct gpiod_lookup_table ams_delta_nand_gpio_table = { GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_NWE, "nwe", 0), GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_ALE, "ale", 0), GPIO_LOOKUP(LATCH2_LABEL, LATCH2_PIN_NAND_CLE, "cle", 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 0, "data", 0, 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 1, "data", 1, 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 2, "data", 2, 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 3, "data", 3, 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 4, "data", 4, 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 5, "data", 5, 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 6, "data", 6, 0), + GPIO_LOOKUP_IDX(OMAP_MPUIO_LABEL, 7, "data", 7, 0), { }, }, }; -- 2.16.4