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55e0ed60 JCPV |
1 | /* |
2 | * (C) Copyright 2002-2009 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
55e0ed60 JCPV |
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 | ||
73144dae | 22 | debug("(%c)", c); |
55e0ed60 JCPV |
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 | ||
55e0ed60 JCPV |
43 | int mdm_init (void) |
44 | { | |
45 | char env_str[16]; | |
46 | char *init_str; | |
47 | int i; | |
55e0ed60 JCPV |
48 | extern void enable_putc(void); |
49 | extern int hwflow_onoff(int); | |
50 | ||
51 | enable_putc(); /* enable serial_putc() */ | |
52 | ||
53 | #ifdef CONFIG_HWFLOW | |
54 | init_str = getenv("mdm_flow_control"); | |
55 | if (init_str && (strcmp(init_str, "rts/cts") == 0)) | |
56 | hwflow_onoff (1); | |
57 | else | |
58 | hwflow_onoff(-1); | |
59 | #endif | |
60 | ||
61 | for (i = 1;;i++) { | |
62 | sprintf(env_str, "mdm_init%d", i); | |
63 | if ((init_str = getenv(env_str)) != NULL) { | |
64 | serial_puts(init_str); | |
65 | serial_puts("\n"); | |
66 | for(;;) { | |
67 | mdm_readline(console_buffer, CONFIG_SYS_CBSIZE); | |
73144dae | 68 | debug("ini%d: [%s]", i, console_buffer); |
55e0ed60 JCPV |
69 | |
70 | if ((strcmp(console_buffer, "OK") == 0) || | |
71 | (strcmp(console_buffer, "ERROR") == 0)) { | |
73144dae | 72 | debug("ini%d: cmd done", i); |
55e0ed60 JCPV |
73 | break; |
74 | } else /* in case we are originating call ... */ | |
75 | if (strncmp(console_buffer, "CONNECT", 7) == 0) { | |
73144dae | 76 | debug("ini%d: connect", i); |
55e0ed60 JCPV |
77 | return 0; |
78 | } | |
79 | } | |
80 | } else | |
81 | break; /* no init string - stop modem init */ | |
82 | ||
83 | udelay(100000); | |
84 | } | |
85 | ||
86 | udelay(100000); | |
87 | ||
88 | /* final stage - wait for connect */ | |
89 | for(;i > 1;) { /* if 'i' > 1 - wait for connection | |
90 | message from modem */ | |
91 | mdm_readline(console_buffer, CONFIG_SYS_CBSIZE); | |
73144dae | 92 | debug("ini_f: [%s]", console_buffer); |
55e0ed60 | 93 | if (strncmp(console_buffer, "CONNECT", 7) == 0) { |
73144dae | 94 | debug("ini_f: connected"); |
55e0ed60 JCPV |
95 | return 0; |
96 | } | |
97 | } | |
98 | ||
99 | return 0; | |
100 | } |