Merge tag 'remoteproc-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad...
[sfrench/cifs-2.6.git] / arch / arm / mach-davinci / include / mach / debug-macro.S
1 /*
2  * Debugging macro for DaVinci
3  *
4  * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
5  *
6  * 2007 (c) MontaVista Software, Inc. This file is licensed under
7  * the terms of the GNU General Public License version 2. This program
8  * is licensed "as is" without any warranty of any kind, whether express
9  * or implied.
10  */
11
12 /* Modifications
13  * Jan 2009     Chaithrika U S  Added senduart, busyuart, waituart
14  *                              macros, based on debug-8250.S file
15  *                              but using 32-bit accesses required for
16  *                              some davinci devices.
17  */
18
19 #include <linux/serial_reg.h>
20
21 #include <mach/serial.h>
22
23 #define UART_SHIFT      2
24
25 #if defined(CONFIG_DEBUG_DAVINCI_DMx_UART0)
26 #define UART_BASE       DAVINCI_UART0_BASE
27 #elif defined(CONFIG_DEBUG_DAVINCI_DA8XX_UART1)
28 #define UART_BASE       DA8XX_UART1_BASE
29 #elif defined(CONFIG_DEBUG_DAVINCI_DA8XX_UART2)
30 #define UART_BASE       DA8XX_UART2_BASE
31 #elif defined(CONFIG_DEBUG_DAVINCI_TNETV107X_UART1)
32 #define UART_BASE       TNETV107X_UART2_BASE
33 #define UART_VIRTBASE   TNETV107X_UART2_VIRT
34 #else
35 #error "Select a specifc port for DEBUG_LL"
36 #endif
37
38 #ifndef UART_VIRTBASE
39 #define UART_VIRTBASE   IO_ADDRESS(UART_BASE)
40 #endif
41
42                 .macro addruart, rp, rv, tmp
43                 ldr     \rp, =UART_BASE
44                 ldr     \rv, =UART_VIRTBASE
45                 .endm
46
47                 .macro  senduart,rd,rx
48                 str     \rd, [\rx, #UART_TX << UART_SHIFT]
49                 .endm
50
51                 .macro  busyuart,rd,rx
52 1002:           ldr     \rd, [\rx, #UART_LSR << UART_SHIFT]
53                 and     \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
54                 teq     \rd, #UART_LSR_TEMT | UART_LSR_THRE
55                 bne     1002b
56                 .endm
57
58                 .macro  waituart,rd,rx
59 #ifdef FLOW_CONTROL
60 1001:           ldr     \rd, [\rx, #UART_MSR << UART_SHIFT]
61                 tst     \rd, #UART_MSR_CTS
62                 beq     1001b
63 #endif
64                 .endm
65