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[213.113.123.174]) by smtp.gmail.com with ESMTPSA id v19sm1709880lfe.69.2018.12.15.15.46.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 15 Dec 2018 15:46:12 -0800 (PST) From: Linus Walleij To: Mark Brown , linux-spi@vger.kernel.org Cc: linux-gpio@vger.kernel.org, Bartosz Golaszewski , linuxarm@huawei.com, Linus Walleij , Talel Shenhar , Simon Goldschmidt , Alexandre Belloni Subject: [PATCH 7/7 v1] spi: dw: Convert to use CS GPIO descriptors Date: Sun, 16 Dec 2018 00:38:23 +0100 Message-Id: <20181215233823.1042-8-linus.walleij@linaro.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181215233823.1042-1-linus.walleij@linaro.org> References: <20181215233823.1042-1-linus.walleij@linaro.org> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This converts the DesignWare (dw) SPI master driver to use GPIO descriptors for chip select handling. This driver has a duplicate DT parser in addition to the one in the core, sets up the line as non-asserted and relies on the core to drive the GPIOs. It is a pretty straight-forward conversion. Cc: Talel Shenhar Cc: Simon Goldschmidt Cc: Alexandre Belloni Cc: Linuxarm Signed-off-by: Linus Walleij --- drivers/spi/spi-dw-mmio.c | 22 ---------------------- drivers/spi/spi-dw.c | 9 +-------- 2 files changed, 1 insertion(+), 30 deletions(-) -- 2.19.2 diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index 3ffb6a40fe0c..00a43c19f2a4 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -18,7 +18,6 @@ #include #include #include -#include #include #include #include @@ -184,27 +183,6 @@ static int dw_spi_mmio_probe(struct platform_device *pdev) dws->num_cs = num_cs; - if (pdev->dev.of_node) { - int i; - - for (i = 0; i < dws->num_cs; i++) { - int cs_gpio = of_get_named_gpio(pdev->dev.of_node, - "cs-gpios", i); - - if (cs_gpio == -EPROBE_DEFER) { - ret = cs_gpio; - goto out; - } - - if (gpio_is_valid(cs_gpio)) { - ret = devm_gpio_request(&pdev->dev, cs_gpio, - dev_name(&pdev->dev)); - if (ret) - goto out; - } - } - } - init_func = device_get_match_data(&pdev->dev); if (init_func) { ret = init_func(pdev, dwsmmio); diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index b705f2bdb8b9..22a7998dbc08 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -20,7 +20,6 @@ #include #include #include -#include #include "spi-dw.h" @@ -425,13 +424,6 @@ static int dw_spi_setup(struct spi_device *spi) chip->tmode = SPI_TMOD_TR; - if (gpio_is_valid(spi->cs_gpio)) { - ret = gpio_direction_output(spi->cs_gpio, - !(spi->mode & SPI_CS_HIGH)); - if (ret) - return ret; - } - return 0; } @@ -496,6 +488,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) goto err_free_master; } + master->use_gpio_descriptors = true; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP; master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); master->bus_num = dws->bus_num;