57 lines
1.5 KiB
Diff
57 lines
1.5 KiB
Diff
From c5bfb0c760a5d8de7ffc3a6acfb8c782be6af1a5 Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Mon, 9 Jan 2012 15:04:21 +0100
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Subject: [PATCH 4/7] spi/ath79: use gpio_request_one
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Use gpio_request_one() instead of multiple gpiolib calls.
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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---
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drivers/spi/spi-ath79.c | 26 +++++++++++++-------------
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1 files changed, 13 insertions(+), 13 deletions(-)
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--- a/drivers/spi/spi-ath79.c
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+++ b/drivers/spi/spi-ath79.c
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@@ -93,6 +93,7 @@ static int ath79_spi_setup_cs(struct spi
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{
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struct ath79_spi *sp = ath79_spidev_to_sp(spi);
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struct ath79_spi_controller_data *cdata;
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+ int status;
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cdata = spi->controller_data;
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if (spi->chip_select && !cdata)
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@@ -108,22 +109,21 @@ static int ath79_spi_setup_cs(struct spi
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/* TODO: setup speed? */
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ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, 0x43);
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+ status = 0;
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if (spi->chip_select) {
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- int status = 0;
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+ unsigned long flags;
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- status = gpio_request(cdata->gpio, dev_name(&spi->dev));
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- if (status)
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- return status;
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-
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- status = gpio_direction_output(cdata->gpio,
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- spi->mode & SPI_CS_HIGH);
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- if (status) {
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- gpio_free(cdata->gpio);
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- return status;
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- }
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+ flags = GPIOF_DIR_OUT;
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+ if (spi->mode & SPI_CS_HIGH)
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+ flags |= GPIOF_INIT_HIGH;
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+ else
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+ flags |= GPIOF_INIT_LOW;
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+
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+ status = gpio_request_one(cdata->gpio, flags,
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+ dev_name(&spi->dev));
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}
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- return 0;
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+ return status;
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}
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static void ath79_spi_cleanup_cs(struct spi_device *spi)
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