powerpc/qe: update risc allocation for QE

Change the RISC allocation to macros instead of enum, add function to read
the number of risc engines from the new property "fsl,qe-num-riscs" under
the qe node in dts. Add new property "fsl,qe-num-riscs" description in
qe.txt

Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 12 insertions, 6 deletions

diff --git a/arch/powerpc/include/asm/qe.h b/arch/powerpc/include/asm/qe.h
index 2701753d9937..60314ef58d11 100644
--- a/arch/powerpc/include/asm/qe.h
+++ b/arch/powerpc/include/asm/qe.h
@@ -152,6 +152,8 @@ unsigned int qe_get_brg_clk(void);
 int qe_setbrg(enum qe_clock brg, unsigned int rate, unsigned int multiplier);
 int qe_get_snum(void);
 void qe_put_snum(u8 snum);
+unsigned int qe_get_num_of_risc(void);
+
 /* we actually use cpm_muram implementation, define this for convenience */
 #define qe_muram_init cpm_muram_init
 #define qe_muram_alloc cpm_muram_alloc
@@ -231,12 +233,16 @@ struct qe_bd {
 #define QE_ALIGNMENT_OF_PRAM    64
 
 /* RISC allocation */
-enum qe_risc_allocation {
-        QE_RISC_ALLOCATION_RISC1 = 1,   /* RISC 1 */
-        QE_RISC_ALLOCATION_RISC2 = 2,   /* RISC 2 */
-        QE_RISC_ALLOCATION_RISC1_AND_RISC2 = 3  /* Dynamically choose
-                                                   RISC 1 or RISC 2 */
-};
+#define QE_RISC_ALLOCATION_RISC1        0x1  /* RISC 1 */
+#define QE_RISC_ALLOCATION_RISC2        0x2  /* RISC 2 */
+#define QE_RISC_ALLOCATION_RISC3        0x4  /* RISC 3 */
+#define QE_RISC_ALLOCATION_RISC4        0x8  /* RISC 4 */
+#define QE_RISC_ALLOCATION_RISC1_AND_RISC2      (QE_RISC_ALLOCATION_RISC1 | \
+                                                 QE_RISC_ALLOCATION_RISC2)
+#define QE_RISC_ALLOCATION_FOUR_RISCS   (QE_RISC_ALLOCATION_RISC1 | \
+                                         QE_RISC_ALLOCATION_RISC2 | \
+                                         QE_RISC_ALLOCATION_RISC3 | \
+                                         QE_RISC_ALLOCATION_RISC4)
 
 /* QE extended filtering Table Lookup Key Size */
 enum qe_fltr_tbl_lookup_key_size {