target/linux/ipq806x/patches/0068-spi-qup-Convert-ot-let-spi-core-handle-checking-tran.patch

   1 From a4b122f945c564e47a42a9665b484785e86648de Mon Sep 17 00:00:00 2001
   2 From: Axel Lin <axel.lin@ingics.com>
   3 Date: Fri, 21 Feb 2014 09:34:16 +0800
   4 Subject: [PATCH 068/182] spi: qup: Convert ot let spi core handle checking
   5  transfer speed
   6
   7 Set master->max_speed_hz then spi core will handle checking transfer speed.
   8 So we can remove the same checking in this driver.
   9
  10 Also remove checking spi->chip_select in spi_qup_setup(), the checking is done
  11 by spi core.
  12
  13 Signed-off-by: Axel Lin <axel.lin@ingics.com>
  14 Acked-by: Ivan T. Ivanov <iivanov@mm-sol.com>
  15 Signed-off-by: Mark Brown <broonie@linaro.org>
  16 ---
  17  drivers/spi/spi-qup.c |   15 +--------------
  18  1 file changed, 1 insertion(+), 14 deletions(-)
  19
  20 --- a/drivers/spi/spi-qup.c
  21 +++ b/drivers/spi/spi-qup.c
  22 @@ -134,7 +134,6 @@ struct spi_qup {
  23         struct clk              *cclk;  /* core clock */
  24         struct clk              *iclk;  /* interface clock */
  25         int                     irq;
  26 -       u32                     max_speed_hz;
  27         spinlock_t              lock;
  28
  29         int                     in_fifo_sz;
  30 @@ -517,18 +516,6 @@ static int spi_qup_setup(struct spi_devi
  31         struct spi_qup *controller = spi_master_get_devdata(spi->master);
  32         struct spi_qup_device *chip = spi_get_ctldata(spi);
  33
  34 -       if (spi->chip_select >= spi->master->num_chipselect) {
  35 -               dev_err(controller->dev, "invalid chip_select %d\n",
  36 -                       spi->chip_select);
  37 -               return -EINVAL;
  38 -       }
  39 -
  40 -       if (spi->max_speed_hz > controller->max_speed_hz) {
  41 -               dev_err(controller->dev, "invalid max_speed_hz %d\n",
  42 -                       spi->max_speed_hz);
  43 -               return -EINVAL;
  44 -       }
  45 -
  46         if (!chip) {
  47                 /* First setup */
  48                 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
  49 @@ -629,6 +616,7 @@ static int spi_qup_probe(struct platform
  50         master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP;
  51         master->num_chipselect = SPI_NUM_CHIPSELECTS;
  52         master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32);
  53 +       master->max_speed_hz = max_freq;
  54         master->setup = spi_qup_setup;
  55         master->cleanup = spi_qup_cleanup;
  56         master->set_cs = spi_qup_set_cs;
  57 @@ -645,7 +633,6 @@ static int spi_qup_probe(struct platform
  58         controller->iclk = iclk;
  59         controller->cclk = cclk;
  60         controller->irq = irq;
  61 -       controller->max_speed_hz = max_freq;
  62
  63         spin_lock_init(&controller->lock);
  64         init_completion(&controller->done);