diff options
| author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2010-06-03 07:39:32 +0300 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2010-06-03 16:12:39 +0100 |
| commit | 0acce82b3dd792c85079ca1f4f7ffd8c82427e0a (patch) | |
| tree | cb949d61ec72206474a1c8dd9a9bef3443fad128 /arch/arm/plat-omap/mcbsp.c | |
| parent | 1fab79b8a1bf0d46a7c7e6a1c06dbed1803f403c (diff) | |
| download | linux-0acce82b3dd792c85079ca1f4f7ffd8c82427e0a.tar.bz2 | |
OMAP: McBSP: Function to query the FIFO size
Users of McBSP can use the omap_mcbsp_get_fifo_size function to query
the size of the McBSP FIFO.
The function will return the FIFO size in words (the HW maximum).
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolsfonmicro.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'arch/arm/plat-omap/mcbsp.c')
| -rw-r--r-- | arch/arm/plat-omap/mcbsp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index 7e669c9744d8..8bab0b28b7a3 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -560,6 +560,20 @@ u16 omap_mcbsp_get_max_rx_threshold(unsigned int id) } EXPORT_SYMBOL(omap_mcbsp_get_max_rx_threshold); +u16 omap_mcbsp_get_fifo_size(unsigned int id) +{ + struct omap_mcbsp *mcbsp; + + if (!omap_mcbsp_check_valid_id(id)) { + printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1); + return -ENODEV; + } + mcbsp = id_to_mcbsp_ptr(id); + + return mcbsp->pdata->buffer_size; +} +EXPORT_SYMBOL(omap_mcbsp_get_fifo_size); + #define MCBSP2_FIFO_SIZE 0x500 /* 1024 + 256 locations */ #define MCBSP1345_FIFO_SIZE 0x80 /* 128 locations */ /* |