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Commit | Line | Data |
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1 | /* | |
2 | * (C) Copyright 2002-2009 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | ||
10 | /* 'inline' - We have to do it fast */ | |
11 | static inline void mdm_readline(char *buf, int bufsiz) | |
12 | { | |
13 | char c; | |
14 | char *p; | |
15 | int n; | |
16 | ||
17 | n = 0; | |
18 | p = buf; | |
19 | for(;;) { | |
20 | c = serial_getc(); | |
21 | ||
22 | /* dbg("(%c)", c); */ | |
23 | ||
24 | switch(c) { | |
25 | case '\r': | |
26 | break; | |
27 | case '\n': | |
28 | *p = '\0'; | |
29 | return; | |
30 | ||
31 | default: | |
32 | if(n++ > bufsiz) { | |
33 | *p = '\0'; | |
34 | return; /* sanity check */ | |
35 | } | |
36 | *p = c; | |
37 | p++; | |
38 | break; | |
39 | } | |
40 | } | |
41 | } | |
42 | ||
43 | extern void dbg(const char *fmt, ...); | |
44 | int mdm_init (void) | |
45 | { | |
46 | char env_str[16]; | |
47 | char *init_str; | |
48 | int i; | |
49 | extern void enable_putc(void); | |
50 | extern int hwflow_onoff(int); | |
51 | ||
52 | enable_putc(); /* enable serial_putc() */ | |
53 | ||
54 | #ifdef CONFIG_HWFLOW | |
55 | init_str = getenv("mdm_flow_control"); | |
56 | if (init_str && (strcmp(init_str, "rts/cts") == 0)) | |
57 | hwflow_onoff (1); | |
58 | else | |
59 | hwflow_onoff(-1); | |
60 | #endif | |
61 | ||
62 | for (i = 1;;i++) { | |
63 | sprintf(env_str, "mdm_init%d", i); | |
64 | if ((init_str = getenv(env_str)) != NULL) { | |
65 | serial_puts(init_str); | |
66 | serial_puts("\n"); | |
67 | for(;;) { | |
68 | mdm_readline(console_buffer, CONFIG_SYS_CBSIZE); | |
69 | dbg("ini%d: [%s]", i, console_buffer); | |
70 | ||
71 | if ((strcmp(console_buffer, "OK") == 0) || | |
72 | (strcmp(console_buffer, "ERROR") == 0)) { | |
73 | dbg("ini%d: cmd done", i); | |
74 | break; | |
75 | } else /* in case we are originating call ... */ | |
76 | if (strncmp(console_buffer, "CONNECT", 7) == 0) { | |
77 | dbg("ini%d: connect", i); | |
78 | return 0; | |
79 | } | |
80 | } | |
81 | } else | |
82 | break; /* no init string - stop modem init */ | |
83 | ||
84 | udelay(100000); | |
85 | } | |
86 | ||
87 | udelay(100000); | |
88 | ||
89 | /* final stage - wait for connect */ | |
90 | for(;i > 1;) { /* if 'i' > 1 - wait for connection | |
91 | message from modem */ | |
92 | mdm_readline(console_buffer, CONFIG_SYS_CBSIZE); | |
93 | dbg("ini_f: [%s]", console_buffer); | |
94 | if (strncmp(console_buffer, "CONNECT", 7) == 0) { | |
95 | dbg("ini_f: connected"); | |
96 | return 0; | |
97 | } | |
98 | } | |
99 | ||
100 | return 0; | |
101 | } |