* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
- * Modifications:
- * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
*/
#include <asm/arch/map.h>
-#include <asm/arch/regs-serial.h>
#include <asm/arch/regs-gpio.h>
+#include <asm/plat-s3c/regs-serial.h>
#define S3C2410_UART1_OFF (0x4000)
#define SHIFT_2440TXF (14-9)
- .macro addruart, rx
+ .macro addruart, rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1
ldreq \rx, = S3C24XX_PA_UART
ldrne \rx, = S3C24XX_VA_UART
-#if CONFIG_DEBUG_S3C2410_UART != 0
- add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C2410_UART)
+#if CONFIG_DEBUG_S3C_UART != 0
+ add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
#endif
- .endm
-
- .macro senduart,rd,rx
- strb \rd, [\rx, # S3C2410_UTXH ]
- .endm
+ .endm
- .macro busyuart, rd, rx
- ldr \rd, [ \rx, # S3C2410_UFCON ]
- tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
- beq 1001f @
- @ FIFO enabled...
-1003:
+ .macro fifo_full_s3c24xx rd, rx
@ check for arm920 vs arm926. currently assume all arm926
@ devices have an 64 byte FIFO identical to the s3c2440
mrc p15, 0, \rd, c0, c0
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
moveq \rd, \rd, lsr #SHIFT_2440TXF
tst \rd, #S3C2410_UFSTAT_TXFULL
- bne 1003b
- b 1002f
+ .endm
-1001:
- @ busy waiting for non fifo
- ldr \rd, [ \rx, # S3C2410_UTRSTAT ]
- tst \rd, #S3C2410_UTRSTAT_TXFE
- beq 1001b
-
-1002: @ exit busyuart
- .endm
+ .macro fifo_full_s3c2410 rd, rx
+ ldr \rd, [ \rx, # S3C2410_UFSTAT ]
+ tst \rd, #S3C2410_UFSTAT_TXFULL
+ .endm
- .macro waituart,rd,rx
+/* fifo level reading */
- ldr \rd, [ \rx, # S3C2410_UFCON ]
- tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled?
- beq 1001f @
- @ FIFO enabled...
-1003:
+ .macro fifo_level_s3c24xx rd, rx
+ @ check for arm920 vs arm926. currently assume all arm926
+ @ devices have an 64 byte FIFO identical to the s3c2440
+ mrc p15, 0, \rd, c0, c0
+ and \rd, \rd, #0xff0
+ teq \rd, #0x260
+ beq 10000f
mrc p15, 0, \rd, c1, c0
tst \rd, #1
addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
and \rd, \rd, #0x00ff0000
teq \rd, #0x00440000 @ is it 2440?
+10000:
ldr \rd, [ \rx, # S3C2410_UFSTAT ]
andne \rd, \rd, #S3C2410_UFSTAT_TXMASK
andeq \rd, \rd, #S3C2440_UFSTAT_TXMASK
- teq \rd, #0
- bne 1003b
- b 1002f
+ .endm
+
+ .macro fifo_level_s3c2410 rd, rx
+ ldr \rd, [ \rx, # S3C2410_UFSTAT ]
+ and \rd, \rd, #S3C2410_UFSTAT_TXMASK
+ .endm
+
+/* Select the correct implementation depending on the configuration. The
+ * S3C2440 will get selected by default, as these are the most widely
+ * used variants of these
+*/
+
+#if defined(CONFIG_CPU_LLSERIAL_S3C2410_ONLY)
+#define fifo_full fifo_full_s3c2410
+#define fifo_level fifo_level_s3c2410
+#warning 2410only
+#elif !defined(CONFIG_CPU_LLSERIAL_S3C2440_ONLY)
+#define fifo_full fifo_full_s3c24xx
+#define fifo_level fifo_level_s3c24xx
+#warning generic
+#endif
-1001:
- @ idle waiting for non fifo
- ldr \rd, [ \rx, # S3C2410_UTRSTAT ]
- tst \rd, #S3C2410_UTRSTAT_TXFE
- beq 1001b
+/* include the reset of the code which will do the work */
-1002: @ exit busyuart
- .endm
+#include <asm/plat-s3c/debug-macro.S>