Blackfin Serial Driver: abstract away DLAB differences into header

[cascardo/linux.git] / include / asm-blackfin / mach-bf533 / cdefBF532.h

diff --git a/include/asm-blackfin/mach-bf533/cdefBF532.h b/include/asm-blackfin/mach-bf533/cdefBF532.h
index 40c1ad3..1546554 100644 (file)
--- a/include/asm-blackfin/mach-bf533/cdefBF532.h
+++ b/include/asm-blackfin/mach-bf533/cdefBF532.h
@@ -43,7 +43,27 @@
 
 /* Clock and System Control (0xFFC0 0400-0xFFC0 07FF) */
 #define bfin_read_PLL_CTL()                  bfin_read16(PLL_CTL)
-#define bfin_write_PLL_CTL(val)              bfin_write16(PLL_CTL,val)
+/* Writing to PLL_CTL initiates a PLL relock sequence. */
+static __inline__ void bfin_write_PLL_CTL(unsigned int val)
+{
+       unsigned long flags, iwr;
+
+       if (val == bfin_read_PLL_CTL())
+               return;
+
+       local_irq_save(flags);
+       /* Enable the PLL Wakeup bit in SIC IWR */
+       iwr = bfin_read32(SIC_IWR);
+       /* Only allow PPL Wakeup) */
+       bfin_write32(SIC_IWR, IWR_ENABLE(0));
+
+       bfin_write16(PLL_CTL, val);
+       SSYNC();
+       asm("IDLE;");
+
+       bfin_write32(SIC_IWR, iwr);
+       local_irq_restore(flags);
+}
 #define bfin_read_PLL_STAT()                 bfin_read16(PLL_STAT)
 #define bfin_write_PLL_STAT(val)             bfin_write16(PLL_STAT,val)
 #define bfin_read_PLL_LOCKCNT()              bfin_read16(PLL_LOCKCNT)
@@ -57,6 +77,10 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
 {
        unsigned long flags, iwr;
 
+       if (val == bfin_read_VR_CTL())
+               return;
+
+       local_irq_save(flags);
        /* Enable the PLL Wakeup bit in SIC IWR */
        iwr = bfin_read32(SIC_IWR);
        /* Only allow PPL Wakeup) */
@@ -64,11 +88,10 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
 
        bfin_write16(VR_CTL, val);
        SSYNC();
-
-       local_irq_save(flags);
        asm("IDLE;");
-       local_irq_restore(flags);
+
        bfin_write32(SIC_IWR, iwr);
+       local_irq_restore(flags);
 }
 
 /* System Interrupt Controller (0xFFC0 0C00-0xFFC0 0FFF) */
@@ -130,10 +153,6 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
 /* General Purpose IO (0xFFC0 2400-0xFFC0 27FF) */
 #define bfin_read_FIO_DIR()                  bfin_read16(FIO_DIR)
 #define bfin_write_FIO_DIR(val)              bfin_write16(FIO_DIR,val)
-#define bfin_read_FIO_FLAG_C()               bfin_read16(FIO_FLAG_C)
-#define bfin_write_FIO_FLAG_C(val)           bfin_write16(FIO_FLAG_C,val)
-#define bfin_read_FIO_FLAG_S()               bfin_read16(FIO_FLAG_S)
-#define bfin_write_FIO_FLAG_S(val)           bfin_write16(FIO_FLAG_S,val)
 #define bfin_read_FIO_MASKA_C()              bfin_read16(FIO_MASKA_C)
 #define bfin_write_FIO_MASKA_C(val)          bfin_write16(FIO_MASKA_C,val)
 #define bfin_read_FIO_MASKA_S()              bfin_read16(FIO_MASKA_S)
@@ -150,10 +169,6 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
 #define bfin_write_FIO_BOTH(val)             bfin_write16(FIO_BOTH,val)
 #define bfin_read_FIO_INEN()                 bfin_read16(FIO_INEN)
 #define bfin_write_FIO_INEN(val)             bfin_write16(FIO_INEN,val)
-#define bfin_read_FIO_FLAG_D()               bfin_read16(FIO_FLAG_D)
-#define bfin_write_FIO_FLAG_D(val)           bfin_write16(FIO_FLAG_D,val)
-#define bfin_read_FIO_FLAG_T()               bfin_read16(FIO_FLAG_T)
-#define bfin_write_FIO_FLAG_T(val)           bfin_write16(FIO_FLAG_T,val)
 #define bfin_read_FIO_MASKA_D()              bfin_read16(FIO_MASKA_D)
 #define bfin_write_FIO_MASKA_D(val)          bfin_write16(FIO_MASKA_D,val)
 #define bfin_read_FIO_MASKA_T()              bfin_read16(FIO_MASKA_T)
@@ -163,6 +178,50 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
 #define bfin_read_FIO_MASKB_T()              bfin_read16(FIO_MASKB_T)
 #define bfin_write_FIO_MASKB_T(val)          bfin_write16(FIO_MASKB_T,val)
 
+
+#if ANOMALY_05000311
+#define BFIN_WRITE_FIO_FLAG(name) \
+static __inline__ void bfin_write_FIO_FLAG_ ## name (unsigned short val)\
+{\
+       unsigned long flags;\
+       local_irq_save(flags);\
+       bfin_write16(FIO_FLAG_ ## name,val);\
+       bfin_read_CHIPID();\
+       local_irq_restore(flags);\
+}
+BFIN_WRITE_FIO_FLAG(D)
+BFIN_WRITE_FIO_FLAG(C)
+BFIN_WRITE_FIO_FLAG(S)
+BFIN_WRITE_FIO_FLAG(T)
+
+#define BFIN_READ_FIO_FLAG(name) \
+static __inline__ unsigned short bfin_read_FIO_FLAG_ ## name (void)\
+{\
+       unsigned long flags;\
+       unsigned short ret;\
+       local_irq_save(flags);\
+       ret = bfin_read16(FIO_FLAG_ ## name);\
+       bfin_read_CHIPID();\
+       local_irq_restore(flags);\
+       return ret;\
+}
+BFIN_READ_FIO_FLAG(D)
+BFIN_READ_FIO_FLAG(C)
+BFIN_READ_FIO_FLAG(S)
+BFIN_READ_FIO_FLAG(T)
+
+#else
+#define bfin_write_FIO_FLAG_D(val)           bfin_write16(FIO_FLAG_D,val)
+#define bfin_write_FIO_FLAG_C(val)           bfin_write16(FIO_FLAG_C,val)
+#define bfin_write_FIO_FLAG_S(val)           bfin_write16(FIO_FLAG_S,val)
+#define bfin_write_FIO_FLAG_T(val)           bfin_write16(FIO_FLAG_T,val)
+#define bfin_read_FIO_FLAG_T()               bfin_read16(FIO_FLAG_T)
+#define bfin_read_FIO_FLAG_C()               bfin_read16(FIO_FLAG_C)
+#define bfin_read_FIO_FLAG_S()               bfin_read16(FIO_FLAG_S)
+#define bfin_read_FIO_FLAG_D()               bfin_read16(FIO_FLAG_D)
+#endif
+
+
 /* DMA Controller */
 #define bfin_read_DMA0_CONFIG()              bfin_read16(DMA0_CONFIG)
 #define bfin_write_DMA0_CONFIG(val)          bfin_write16(DMA0_CONFIG,val)