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authorPeter Ujfalusi <peter.ujfalusi@nokia.com>2010-06-03 07:39:32 +0300
committerLiam Girdwood <lrg@slimlogic.co.uk>2010-06-03 16:12:39 +0100
commit0acce82b3dd792c85079ca1f4f7ffd8c82427e0a (patch)
treecb949d61ec72206474a1c8dd9a9bef3443fad128 /arch/arm/plat-omap/mcbsp.c
parent1fab79b8a1bf0d46a7c7e6a1c06dbed1803f403c (diff)
downloadlinux-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.c14
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 */
/*