target/linux/cns3xxx/patches-4.4/075-spi_support.patch

   1 --- a/drivers/spi/Kconfig
   2 +++ b/drivers/spi/Kconfig
   3 @@ -183,6 +183,13 @@ config SPI_CLPS711X
   4           This enables dedicated general purpose SPI/Microwire1-compatible
   5           master mode interface (SSI1) for CLPS711X-based CPUs.
   6
   7 +config SPI_CNS3XXX
   8 +       tristate "CNS3XXX SPI controller"
   9 +       depends on ARCH_CNS3XXX && SPI_MASTER
  10 +       select SPI_BITBANG
  11 +       help
  12 +         This enables using the CNS3XXX SPI controller in master mode.
  13 +
  14  config SPI_COLDFIRE_QSPI
  15         tristate "Freescale Coldfire QSPI controller"
  16         depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
  17 --- a/drivers/spi/Makefile
  18 +++ b/drivers/spi/Makefile
  19 @@ -26,6 +26,7 @@ obj-$(CONFIG_SPI_BITBANG)             += spi-bitban
  20  obj-$(CONFIG_SPI_BUTTERFLY)            += spi-butterfly.o
  21  obj-$(CONFIG_SPI_CADENCE)              += spi-cadence.o
  22  obj-$(CONFIG_SPI_CLPS711X)             += spi-clps711x.o
  23 +obj-$(CONFIG_SPI_CNS3XXX)              += spi-cns3xxx.o
  24  obj-$(CONFIG_SPI_COLDFIRE_QSPI)                += spi-coldfire-qspi.o
  25  obj-$(CONFIG_SPI_DAVINCI)              += spi-davinci.o
  26  obj-$(CONFIG_SPI_DLN2)                 += spi-dln2.o
  27 --- a/include/linux/spi/spi.h
  28 +++ b/include/linux/spi/spi.h
  29 @@ -703,6 +703,10 @@ struct spi_transfer {
  30         u32             speed_hz;
  31
  32         struct list_head transfer_list;
  33 +
  34 +#ifdef CONFIG_ARCH_CNS3XXX
  35 +       unsigned        last_in_message_list;
  36 +#endif
  37  };
  38
  39  /**
  40 --- a/drivers/spi/spi.c
  41 +++ b/drivers/spi/spi.c
  42 @@ -933,6 +933,9 @@ static int spi_transfer_one_message(stru
  43         list_for_each_entry(xfer, &msg->transfers, transfer_list) {
  44                 trace_spi_transfer_start(msg, xfer);
  45
  46 +               xfer->last_in_message_list =
  47 +                       list_is_last(&xfer->transfer_list, &msg->transfers);
  48 +
  49                 spi_statistics_add_transfer_stats(statm, xfer, master);
  50                 spi_statistics_add_transfer_stats(stats, xfer, master);
  51