MIPS: Add detection of DSP ASE Revision 2.

[ralf@linux-mips.org: This patch really only detects the ASE and passes its
existence on to userland via /proc/cpuinfo.  The DSP ASE Rev 2. adds new
resources but no resources that would need management by the kernel.]

Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4165/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 6 insertions, 0 deletions

diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 089125a6ae6..c507b931b48 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -171,6 +171,10 @@
 #define cpu_has_dsp             (cpu_data[0].ases & MIPS_ASE_DSP)
 #endif
 
+#ifndef cpu_has_dsp2
+#define cpu_has_dsp2            (cpu_data[0].ases & MIPS_ASE_DSP2P)
+#endif
+
 #ifndef cpu_has_mipsmt
 #define cpu_has_mipsmt          (cpu_data[0].ases & MIPS_ASE_MIPSMT)
 #endif
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index 7dc0db8b942..52c4e914f95 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -332,6 +332,7 @@ enum cpu_type_enum {
 #define MIPS_ASE_SMARTMIPS      0x00000008 /* SmartMIPS */
 #define MIPS_ASE_DSP            0x00000010 /* Signal Processing ASE */
 #define MIPS_ASE_MIPSMT         0x00000020 /* CPU supports MIPS MT */
+#define MIPS_ASE_DSP2P          0x00000040 /* Signal Processing ASE Rev 2 */
 
 
 #endif /* _ASM_CPU_H */
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 04d7560dfaf..eb742895dcb 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -592,6 +592,7 @@
 #define MIPS_CONF3_VEIC         (_ULCAST_(1) <<  6)
 #define MIPS_CONF3_LPA          (_ULCAST_(1) <<  7)
 #define MIPS_CONF3_DSP          (_ULCAST_(1) << 10)
+#define MIPS_CONF3_DSP2P        (_ULCAST_(1) << 11)
 #define MIPS_CONF3_RXI          (_ULCAST_(1) << 12)
 #define MIPS_CONF3_ULRI         (_ULCAST_(1) << 13)