recipes-bsp/linux/linux-omap/0028-Add-functions-to-dma.c-to-set-address-and-length-for.patch

   1 From c0b0f03265656641342b4915e476a3d5ec9dd17c Mon Sep 17 00:00:00 2001
   2 From: Philip Balister <philip@opensdr.com>
   3 Date: Thu, 22 Apr 2010 19:41:58 -0700
   4 Subject: [PATCH 28/29] Add functions to dma.c to set address and length for src and dest.
   5
   6 ---
   7  arch/arm/plat-omap/dma.c              |   30 ++++++++++++++++++++++++++++++
   8  arch/arm/plat-omap/include/plat/dma.h |    4 ++++
   9  2 files changed, 34 insertions(+), 0 deletions(-)
  10
  11 diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
  12 index c4b2b47..f28f756 100644
  13 --- a/arch/arm/plat-omap/dma.c
  14 +++ b/arch/arm/plat-omap/dma.c
  15 @@ -471,6 +471,21 @@ void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
  16  }
  17  EXPORT_SYMBOL(omap_set_dma_src_burst_mode);
  18
  19 +void omap_set_dma_src_addr_size(int lch, unsigned int addr, int elem_count)
  20 +{
  21 +
  22 +       if (cpu_class_is_omap1()) {
  23 +               p->dma_write(addr >> 16, CSSA, lch);
  24 +               //p->dma_write((u16)addr, CSSA_L, lch);
  25 +       }
  26 +
  27 +       if (cpu_class_is_omap2())
  28 +               p->dma_write(addr, CSSA, lch);
  29 +
  30 +       p->dma_write(elem_count, CEN, lch);
  31 +}
  32 +EXPORT_SYMBOL_GPL(omap_set_dma_src_addr_size);
  33 +
  34  /* Note that dest_port is only for OMAP1 */
  35  void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
  36                               unsigned long dest_start,
  37 @@ -561,6 +576,21 @@ void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
  38  }
  39  EXPORT_SYMBOL(omap_set_dma_dest_burst_mode);
  40
  41 +void omap_set_dma_dest_addr_size(int lch, unsigned int addr, int elem_count)
  42 +{
  43 +
  44 +       if (cpu_class_is_omap1()) {
  45 +               p->dma_write(addr >> 16, CDSA, lch);
  46 +               //p->dma_write((u16)addr, CDSA_L, lch);
  47 +       }
  48 +
  49 +       if (cpu_class_is_omap2())
  50 +               p->dma_write(addr, CDSA, lch);
  51 +
  52 +       p->dma_write(elem_count, CEN, lch);
  53 +}
  54 +EXPORT_SYMBOL_GPL(omap_set_dma_dest_addr_size);
  55 +
  56  static inline void omap_enable_channel_irq(int lch)
  57  {
  58         u32 status;
  59 diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h
  60 index d1c916f..1e7243e 100644
  61 --- a/arch/arm/plat-omap/include/plat/dma.h
  62 +++ b/arch/arm/plat-omap/include/plat/dma.h
  63 @@ -462,6 +462,8 @@ extern void omap_set_dma_src_index(int lch, int eidx, int fidx);
  64  extern void omap_set_dma_src_data_pack(int lch, int enable);
  65  extern void omap_set_dma_src_burst_mode(int lch,
  66                                         enum omap_dma_burst_mode burst_mode);
  67 +extern void omap_set_dma_src_addr_size(int lch, unsigned int addr,
  68 +                               int elem_count);
  69
  70  extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
  71                                      unsigned long dest_start,
  72 @@ -470,6 +472,8 @@ extern void omap_set_dma_dest_index(int lch, int eidx, int fidx);
  73  extern void omap_set_dma_dest_data_pack(int lch, int enable);
  74  extern void omap_set_dma_dest_burst_mode(int lch,
  75                                          enum omap_dma_burst_mode burst_mode);
  76 +extern void omap_set_dma_dest_addr_size(int lch, unsigned int addr,
  77 +                                       int elem_count);
  78
  79  extern void omap_set_dma_params(int lch,
  80                                 struct omap_dma_channel_params *params);
  81 --
  82 1.6.6.1
  83