target/linux/ar71xx/patches-3.2/204-spi-ath79-use-gpio_request_one.patch

   1 From c5bfb0c760a5d8de7ffc3a6acfb8c782be6af1a5 Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Mon, 9 Jan 2012 15:04:21 +0100
   4 Subject: [PATCH 4/7] spi/ath79: use gpio_request_one
   5
   6 Use gpio_request_one() instead of multiple gpiolib calls.
   7
   8 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
   9 ---
  10  drivers/spi/spi-ath79.c |   26 +++++++++++++-------------
  11  1 files changed, 13 insertions(+), 13 deletions(-)
  12
  13 --- a/drivers/spi/spi-ath79.c
  14 +++ b/drivers/spi/spi-ath79.c
  15 @@ -93,6 +93,7 @@ static int ath79_spi_setup_cs(struct spi
  16  {
  17         struct ath79_spi *sp = ath79_spidev_to_sp(spi);
  18         struct ath79_spi_controller_data *cdata;
  19 +       int status;
  20
  21         cdata = spi->controller_data;
  22         if (spi->chip_select && !cdata)
  23 @@ -108,22 +109,21 @@ static int ath79_spi_setup_cs(struct spi
  24         /* TODO: setup speed? */
  25         ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, 0x43);
  26
  27 +       status = 0;
  28         if (spi->chip_select) {
  29 -               int status = 0;
  30 +               unsigned long flags;
  31
  32 -               status = gpio_request(cdata->gpio, dev_name(&spi->dev));
  33 -               if (status)
  34 -                       return status;
  35 -
  36 -               status = gpio_direction_output(cdata->gpio,
  37 -                                              spi->mode & SPI_CS_HIGH);
  38 -               if (status) {
  39 -                       gpio_free(cdata->gpio);
  40 -                       return status;
  41 -               }
  42 +               flags = GPIOF_DIR_OUT;
  43 +               if (spi->mode & SPI_CS_HIGH)
  44 +                       flags |= GPIOF_INIT_HIGH;
  45 +               else
  46 +                       flags |= GPIOF_INIT_LOW;
  47 +
  48 +               status = gpio_request_one(cdata->gpio, flags,
  49 +                                         dev_name(&spi->dev));
  50         }
  51
  52 -       return 0;
  53 +       return status;
  54  }
  55
  56  static void ath79_spi_cleanup_cs(struct spi_device *spi)