[POWERPC] QE: Add support for Freescale QUICCEngine UART

Add support for UART serial ports using a Freescale QUICCEngine. Update
booting-without-of.txt to define new properties for a QE UART node.  Update
the MPC8323E-MDS device tree to add UCC5 as a UART.  Update the QE library
to support slow UCC devices and modules.

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

2 files changed, 10 insertions, 2 deletions

diff --git a/arch/powerpc/sysdev/qe_lib/Kconfig b/arch/powerpc/sysdev/qe_lib/Kconfig
index f611d344a126..adc66212a419 100644
--- a/arch/powerpc/sysdev/qe_lib/Kconfig
+++ b/arch/powerpc/sysdev/qe_lib/Kconfig
@@ -4,7 +4,7 @@
 
 config UCC_SLOW
         bool
-        default n
+        default y if SERIAL_QE
         help
           This option provides qe_lib support to UCC slow
           protocols: UART, BISYNC, QMC
diff --git a/arch/powerpc/sysdev/qe_lib/ucc_slow.c b/arch/powerpc/sysdev/qe_lib/ucc_slow.c
index 0174b3aeef8f..b2870b208ddb 100644
--- a/arch/powerpc/sysdev/qe_lib/ucc_slow.c
+++ b/arch/powerpc/sysdev/qe_lib/ucc_slow.c
@@ -19,6 +19,7 @@
 #include <linux/stddef.h>
 #include <linux/interrupt.h>
 #include <linux/err.h>
+#include <linux/module.h>
 
 #include <asm/io.h>
 #include <asm/immap_qe.h>
@@ -41,6 +42,7 @@ u32 ucc_slow_get_qe_cr_subblock(int uccs_num)
         default: return QE_CR_SUBBLOCK_INVALID;
         }
 }
+EXPORT_SYMBOL(ucc_slow_get_qe_cr_subblock);
 
 void ucc_slow_poll_transmitter_now(struct ucc_slow_private * uccs)
 {
@@ -56,6 +58,7 @@ void ucc_slow_graceful_stop_tx(struct ucc_slow_private * uccs)
         qe_issue_cmd(QE_GRACEFUL_STOP_TX, id,
                          QE_CR_PROTOCOL_UNSPECIFIED, 0);
 }
+EXPORT_SYMBOL(ucc_slow_graceful_stop_tx);
 
 void ucc_slow_stop_tx(struct ucc_slow_private * uccs)
 {
@@ -65,6 +68,7 @@ void ucc_slow_stop_tx(struct ucc_slow_private * uccs)
         id = ucc_slow_get_qe_cr_subblock(us_info->ucc_num);
         qe_issue_cmd(QE_STOP_TX, id, QE_CR_PROTOCOL_UNSPECIFIED, 0);
 }
+EXPORT_SYMBOL(ucc_slow_stop_tx);
 
 void ucc_slow_restart_tx(struct ucc_slow_private * uccs)
 {
@@ -74,6 +78,7 @@ void ucc_slow_restart_tx(struct ucc_slow_private * uccs)
         id = ucc_slow_get_qe_cr_subblock(us_info->ucc_num);
         qe_issue_cmd(QE_RESTART_TX, id, QE_CR_PROTOCOL_UNSPECIFIED, 0);
 }
+EXPORT_SYMBOL(ucc_slow_restart_tx);
 
 void ucc_slow_enable(struct ucc_slow_private * uccs, enum comm_dir mode)
 {
@@ -94,6 +99,7 @@ void ucc_slow_enable(struct ucc_slow_private * uccs, enum comm_dir mode)
         }
         out_be32(&us_regs->gumr_l, gumr_l);
 }
+EXPORT_SYMBOL(ucc_slow_enable);
 
 void ucc_slow_disable(struct ucc_slow_private * uccs, enum comm_dir mode)
 {
@@ -114,6 +120,7 @@ void ucc_slow_disable(struct ucc_slow_private * uccs, enum comm_dir mode)
         }
         out_be32(&us_regs->gumr_l, gumr_l);
 }
+EXPORT_SYMBOL(ucc_slow_disable);
 
 /* Initialize the UCC for Slow operations
  *
@@ -347,6 +354,7 @@ int ucc_slow_init(struct ucc_slow_info * us_info, struct ucc_slow_private ** ucc
         *uccs_ret = uccs;
         return 0;
 }
+EXPORT_SYMBOL(ucc_slow_init);
 
 void ucc_slow_free(struct ucc_slow_private * uccs)
 {
@@ -366,5 +374,5 @@ void ucc_slow_free(struct ucc_slow_private * uccs)
 
         kfree(uccs);
 }
-
+EXPORT_SYMBOL(ucc_slow_free);