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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-05-29 10:04:24 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-05-29 10:04:24 +0100 |
| commit | 42f1d2e06a25628ae4ceaadccc4fa67c7787e2b4 (patch) | |
| tree | 8aac83e399de7ad13748a59853a0feea9ed2c5cb /arch/arm/mach-davinci/include/mach/debug-macro.S | |
| parent | 9af5324a070e0b2dcb6e22c89e17424eba245fcc (diff) | |
| parent | 77bbca138c64cb80259732db6f70e1668123f2a7 (diff) | |
| download | kernel_samsung_smdk4412-42f1d2e06a25628ae4ceaadccc4fa67c7787e2b4.zip kernel_samsung_smdk4412-42f1d2e06a25628ae4ceaadccc4fa67c7787e2b4.tar.gz kernel_samsung_smdk4412-42f1d2e06a25628ae4ceaadccc4fa67c7787e2b4.tar.bz2 | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci into devel
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/debug-macro.S')
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/debug-macro.S | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/arch/arm/mach-davinci/include/mach/debug-macro.S b/arch/arm/mach-davinci/include/mach/debug-macro.S index e6c0f0d..de3fc21 100644 --- a/arch/arm/mach-davinci/include/mach/debug-macro.S +++ b/arch/arm/mach-davinci/include/mach/debug-macro.S @@ -9,6 +9,16 @@ * or implied. */ +/* Modifications + * Jan 2009 Chaithrika U S Added senduart, busyuart, waituart + * macros, based on debug-8250.S file + * but using 32-bit accesses required for + * some davinci devices. + */ + +#include <linux/serial_reg.h> +#define UART_SHIFT 2 + .macro addruart, rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? @@ -17,5 +27,22 @@ orr \rx, \rx, #0x00c20000 @ UART 0 .endm -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> + .macro senduart,rd,rx + str \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1002b + .endm + + .macro waituart,rd,rx +#ifdef FLOW_CONTROL +1001: ldr \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b +#endif + .endm + |