[MIPS] TXx9: Unify serial_txx9 setup

* Unify calling of early_serial_txx9_setup.
* Use dedicated serial clock on RBTX4938.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

7 files changed, 44 insertions, 52 deletions

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index b136c6692a5f..94ce1a5c38a4 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -21,6 +21,7 @@
 #include <linux/err.h>
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
+#include <linux/serial_core.h>
 #include <asm/bootinfo.h>
 #include <asm/time.h>
 #include <asm/reboot.h>
@@ -247,6 +248,29 @@ void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
                 platform_device_put(pdev);
 }
 
+void __init txx9_sio_init(unsigned long baseaddr, int irq,
+                          unsigned int line, unsigned int sclk, int nocts)
+{
+#ifdef CONFIG_SERIAL_TXX9
+        struct uart_port req;
+
+        memset(&req, 0, sizeof(req));
+        req.line = line;
+        req.iotype = UPIO_MEM;
+        req.membase = ioremap(baseaddr, 0x24);
+        req.mapbase = baseaddr;
+        req.irq = irq;
+        if (!nocts)
+                req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
+        if (sclk) {
+                req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
+                req.uartclk = sclk;
+        } else
+                req.uartclk = TXX9_IMCLK;
+        early_serial_txx9_setup(&req);
+#endif /* CONFIG_SERIAL_TXX9 */
+}
+
 /* wrappers */
 void __init plat_mem_setup(void)
 {
diff --git a/arch/mips/txx9/generic/setup_tx3927.c b/arch/mips/txx9/generic/setup_tx3927.c
index 0d09a0ff71e3..7bd963d37fc3 100644
--- a/arch/mips/txx9/generic/setup_tx3927.c
+++ b/arch/mips/txx9/generic/setup_tx3927.c
@@ -13,8 +13,8 @@
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/delay.h>
-#include <linux/serial_core.h>
 #include <linux/param.h>
+#include <linux/io.h>
 #include <asm/mipsregs.h>
 #include <asm/txx9irq.h>
 #include <asm/txx9tmr.h>
@@ -119,23 +119,12 @@ void __init tx3927_time_init(unsigned int evt_tmrnr, unsigned int src_tmrnr)
         txx9_clocksource_init(TX3927_TMR_REG(src_tmrnr), TXX9_IMCLK);
 }
 
-void __init tx3927_setup_serial(unsigned int cts_mask)
+void __init tx3927_sio_init(unsigned int sclk, unsigned int cts_mask)
 {
-#ifdef CONFIG_SERIAL_TXX9
         int i;
-        struct uart_port req;
-
-        for (i = 0; i < 2; i++) {
-                memset(&req, 0, sizeof(req));
-                req.line = i;
-                req.iotype = UPIO_MEM;
-                req.membase = (unsigned char __iomem *)TX3927_SIO_REG(i);
-                req.mapbase = TX3927_SIO_REG(i);
-                req.irq = TXX9_IRQ_BASE + TX3927_IR_SIO(i);
-                if (!((1 << i) & cts_mask))
-                        req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
-                req.uartclk = TXX9_IMCLK;
-                early_serial_txx9_setup(&req);
-        }
-#endif /* CONFIG_SERIAL_TXX9 */
+
+        for (i = 0; i < 2; i++)
+                txx9_sio_init(TX3927_SIO_REG(i),
+                              TXX9_IRQ_BASE + TX3927_IR_SIO(i),
+                              i, sclk, (1 << i) & cts_mask);
 }
diff --git a/arch/mips/txx9/generic/setup_tx4927.c b/arch/mips/txx9/generic/setup_tx4927.c
index b42c85573d0d..f80d4b7a694d 100644
--- a/arch/mips/txx9/generic/setup_tx4927.c
+++ b/arch/mips/txx9/generic/setup_tx4927.c
@@ -13,7 +13,6 @@
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/delay.h>
-#include <linux/serial_core.h>
 #include <linux/param.h>
 #include <asm/txx9irq.h>
 #include <asm/txx9tmr.h>
@@ -178,22 +177,12 @@ void __init tx4927_time_init(unsigned int tmrnr)
                                      TXX9_IMCLK);
 }
 
-void __init tx4927_setup_serial(void)
+void __init tx4927_sio_init(unsigned int sclk, unsigned int cts_mask)
 {
-#ifdef CONFIG_SERIAL_TXX9
         int i;
-        struct uart_port req;
-
-        for (i = 0; i < 2; i++) {
-                memset(&req, 0, sizeof(req));
-                req.line = i;
-                req.iotype = UPIO_MEM;
-                req.membase = (unsigned char __iomem *)TX4927_SIO_REG(i);
-                req.mapbase = TX4927_SIO_REG(i) & 0xfffffffffULL;
-                req.irq = TXX9_IRQ_BASE + TX4927_IR_SIO(i);
-                req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
-                req.uartclk = TXX9_IMCLK;
-                early_serial_txx9_setup(&req);
-        }
-#endif /* CONFIG_SERIAL_TXX9 */
+
+        for (i = 0; i < 2; i++)
+                txx9_sio_init(TX4927_SIO_REG(i) & 0xfffffffffULL,
+                              TXX9_IRQ_BASE + TX4927_IR_SIO(i),
+                              i, sclk, (1 << i) & cts_mask);
 }
diff --git a/arch/mips/txx9/generic/setup_tx4938.c b/arch/mips/txx9/generic/setup_tx4938.c
index 1ceace45ef6a..f3040b9ba059 100644
--- a/arch/mips/txx9/generic/setup_tx4938.c
+++ b/arch/mips/txx9/generic/setup_tx4938.c
@@ -13,7 +13,6 @@
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/delay.h>
-#include <linux/serial_core.h>
 #include <linux/param.h>
 #include <asm/txx9irq.h>
 #include <asm/txx9tmr.h>
@@ -238,11 +237,9 @@ void __init tx4938_time_init(unsigned int tmrnr)
                                      TXX9_IMCLK);
 }
 
-void __init tx4938_setup_serial(void)
+void __init tx4938_sio_init(unsigned int sclk, unsigned int cts_mask)
 {
-#ifdef CONFIG_SERIAL_TXX9
         int i;
-        struct uart_port req;
         unsigned int ch_mask = 0;
 
         if (__raw_readq(&tx4938_ccfgptr->pcfg) & TX4938_PCFG_ETH0_SEL)
@@ -250,17 +247,10 @@ void __init tx4938_setup_serial(void)
         for (i = 0; i < 2; i++) {
                 if ((1 << i) & ch_mask)
                         continue;
-                memset(&req, 0, sizeof(req));
-                req.line = i;
-                req.iotype = UPIO_MEM;
-                req.membase = (unsigned char __iomem *)TX4938_SIO_REG(i);
-                req.mapbase = TX4938_SIO_REG(i) & 0xfffffffffULL;
-                req.irq = TXX9_IRQ_BASE + TX4938_IR_SIO(i);
-                req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
-                req.uartclk = TXX9_IMCLK;
-                early_serial_txx9_setup(&req);
+                txx9_sio_init(TX4938_SIO_REG(i) & 0xfffffffffULL,
+                              TXX9_IRQ_BASE + TX4938_IR_SIO(i),
+                              i, sclk, (1 << i) & cts_mask);
         }
-#endif /* CONFIG_SERIAL_TXX9 */
 }
 
 void __init tx4938_spi_init(int busid)
diff --git a/arch/mips/txx9/jmr3927/setup.c b/arch/mips/txx9/jmr3927/setup.c
index cf7513d95fa7..87db41be8a56 100644
--- a/arch/mips/txx9/jmr3927/setup.c
+++ b/arch/mips/txx9/jmr3927/setup.c
@@ -105,7 +105,7 @@ static void __init jmr3927_mem_setup(void)
         /* initialize board */
         jmr3927_board_init();
 
-        tx3927_setup_serial(1 << 1); /* ch1: noCTS */
+        tx3927_sio_init(0, 1 << 1); /* ch1: noCTS */
 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
         argptr = prom_getcmdline();
         if (!strstr(argptr, "console="))
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 962ada57d12d..0d39bafea794 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -212,7 +212,7 @@ static void __init rbtx4927_mem_setup(void)
         set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET);
 #endif
 
-        tx4927_setup_serial();
+        tx4927_sio_init(0, 0);
 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
         argptr = prom_getcmdline();
         if (!strstr(argptr, "console="))
diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c
index 5c05a21b33f5..9ab48dec0fe8 100644
--- a/arch/mips/txx9/rbtx4938/setup.c
+++ b/arch/mips/txx9/rbtx4938/setup.c
@@ -165,7 +165,7 @@ static void __init rbtx4938_mem_setup(void)
         set_io_port_base(RBTX4938_ETHER_BASE);
 #endif
 
-        tx4938_setup_serial();
+        tx4938_sio_init(7372800, 0);
 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
         argptr = prom_getcmdline();
         if (!strstr(argptr, "console="))