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authorOlof Johansson <olof@lixom.net>2012-03-08 08:53:14 -0800
committerOlof Johansson <olof@lixom.net>2012-03-08 08:53:14 -0800
commitd60d506e6baaf423148c458df3ece0c1d440dce4 (patch)
treec25c44e70ebaaddcbe39559df5c5cd260e956be4 /arch/arm/mach-s3c24xx/include/mach/debug-macro.S
parent62f383435932ea3d271bee6b957de048452c1b16 (diff)
parent2e5ac9436645bb9fd2097868e228321f303c9c75 (diff)
Merge branch 'next/cleanup-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup
* 'next/cleanup-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (24 commits) ARM: S3C24XX: remove call to s3c24xx_setup_clocks ARM: S3C24XX: add get_rate for clk_p on S3C2416/2443 ARM: S3C24XX: add get_rate for clk_h on S3C2416/2443 ARM: S3C24XX: remove XXX_setup_clocks method from S3C2443 ARM: S3C24XX: remove obsolete S3C2416_DMA option ARM: S3C24XX: Reuse S3C2443 dma for S3C2416 ARM: S3C24XX: Fix indentation of dma-s3c2443 ARM: S3C24XX: Move device setup files to mach directory ARM: S3C24XX: Consolidate Simtec extensions ARM: S3C24XX: move simtec-specific code to mach directory ARM: S3C24XX: Move common-smdk code to mach directory ARM: S3C24XX: Move s3c2443-clock.c to mach-s3c24xx ARM: s3c2410_defconfig: update s3c2410_defconfig ARM: S3C2443: move mach-s3c2443/* into mach-s3c24xx/ ARM: S3C2440: move mach-s3c2440/* into mach-s3c24xx/ ARM: S3C2416: move mach-s3c2416/* into mach-s3c24xx/ ARM: S3C2412: move mach-s3c2412/* into mach-s3c24xx/ ARM: S3C2410: move mach-s3c2410/* into mach-s3c24xx/ ARM: S3C24XX: change the ARCH_S3C2410 to ARCH_S3C24XX ARM: S3C2410: move s3c2410_baseclk_add to clock.h ...
Diffstat (limited to 'arch/arm/mach-s3c24xx/include/mach/debug-macro.S')
-rw-r--r--arch/arm/mach-s3c24xx/include/mach/debug-macro.S101
1 files changed, 101 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/include/mach/debug-macro.S b/arch/arm/mach-s3c24xx/include/mach/debug-macro.S
new file mode 100644
index 00000000000..4135de87d1f
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/include/mach/debug-macro.S
@@ -0,0 +1,101 @@
+/* arch/arm/mach-s3c2410/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ * Copyright (C) 1994-1999 Russell King
+ * Copyright (C) 2005 Simtec Electronics
+ *
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * 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.
+*/
+
+#include <mach/map.h>
+#include <mach/regs-gpio.h>
+#include <plat/regs-serial.h>
+
+#define S3C2410_UART1_OFF (0x4000)
+#define SHIFT_2440TXF (14-9)
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, = S3C24XX_PA_UART
+ ldr \rv, = S3C24XX_VA_UART
+#if CONFIG_DEBUG_S3C_UART != 0
+ add \rp, \rp, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
+ add \rv, \rv, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
+#endif
+ .endm
+
+ .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
+ and \rd, \rd, #0xff0
+ teq \rd, #0x260
+ beq 1004f
+ mrc p15, 0, \rd, c1, c0
+ tst \rd, #1
+ addeq \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
+ addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
+ bic \rd, \rd, #0xff000
+ ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
+ and \rd, \rd, #0x00ff0000
+ teq \rd, #0x00440000 @ is it 2440?
+1004:
+ ldr \rd, [ \rx, # S3C2410_UFSTAT ]
+ moveq \rd, \rd, lsr #SHIFT_2440TXF
+ tst \rd, #S3C2410_UFSTAT_TXFULL
+ .endm
+
+ .macro fifo_full_s3c2410 rd, rx
+ ldr \rd, [ \rx, # S3C2410_UFSTAT ]
+ tst \rd, #S3C2410_UFSTAT_TXFULL
+ .endm
+
+/* fifo level reading */
+
+ .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)
+ addne \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
+ bic \rd, \rd, #0xff000
+ ldr \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
+ 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
+ .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
+#elif !defined(CONFIG_CPU_LLSERIAL_S3C2440_ONLY)
+#define fifo_full fifo_full_s3c24xx
+#define fifo_level fifo_level_s3c24xx
+#endif
+
+/* include the reset of the code which will do the work */
+
+#include <plat/debug-macro.S>