Blackfin: bf538: add support for extended GPIO banks

The GPIOs on ports C/D/E on the BF538/BF539 do not behave the same way as
the other ports on the part and the same way as all other Blackfin parts.
The MMRs are programmed slightly different and they cannot be used to
generate interrupts or wakeup a sleeping system.  Since these guys don't
fit into the existing code, create a simple gpiolib driver for them.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/arch/blackfin/mach-common/dpmc_modes.S b/arch/blackfin/mach-common/dpmc_modes.S
index 8009a512fb11..b03716896051 100644
--- a/arch/blackfin/mach-common/dpmc_modes.S
+++ b/arch/blackfin/mach-common/dpmc_modes.S
@@ -404,6 +404,21 @@ ENTRY(_do_hibernate)
         PM_SYS_PUSH(EBIU_FCTL)
 #endif
 
+#ifdef PORTCIO_FER
+        PM_SYS_PUSH16(PORTCIO_DIR)
+        PM_SYS_PUSH16(PORTCIO_INEN)
+        PM_SYS_PUSH16(PORTCIO)
+        PM_SYS_PUSH16(PORTCIO_FER)
+        PM_SYS_PUSH16(PORTDIO_DIR)
+        PM_SYS_PUSH16(PORTDIO_INEN)
+        PM_SYS_PUSH16(PORTDIO)
+        PM_SYS_PUSH16(PORTDIO_FER)
+        PM_SYS_PUSH16(PORTEIO_DIR)
+        PM_SYS_PUSH16(PORTEIO_INEN)
+        PM_SYS_PUSH16(PORTEIO)
+        PM_SYS_PUSH16(PORTEIO_FER)
+#endif
+
         PM_SYS_PUSH16(SYSCR)
 
         /* Save Core MMRs */
@@ -716,6 +731,21 @@ ENTRY(_do_hibernate)
         P0.L = lo(PLL_CTL);
         PM_SYS_POP16(SYSCR)
 
+#ifdef PORTCIO_FER
+        PM_SYS_POP16(PORTEIO_FER)
+        PM_SYS_POP16(PORTEIO)
+        PM_SYS_POP16(PORTEIO_INEN)
+        PM_SYS_POP16(PORTEIO_DIR)
+        PM_SYS_POP16(PORTDIO_FER)
+        PM_SYS_POP16(PORTDIO)
+        PM_SYS_POP16(PORTDIO_INEN)
+        PM_SYS_POP16(PORTDIO_DIR)
+        PM_SYS_POP16(PORTCIO_FER)
+        PM_SYS_POP16(PORTCIO)
+        PM_SYS_POP16(PORTCIO_INEN)
+        PM_SYS_POP16(PORTCIO_DIR)
+#endif
+
 #ifdef EBIU_FCTL
         PM_SYS_POP(EBIU_FCTL)
         PM_SYS_POP(EBIU_MODE)