1 | /** |
---|
2 | * @file |
---|
3 | * |
---|
4 | * @ingroup raspberrypi_console |
---|
5 | * |
---|
6 | * @brief framebuffer graphic console support. |
---|
7 | */ |
---|
8 | |
---|
9 | /* |
---|
10 | * Copyright (c) 2015 Yang Qiao |
---|
11 | * |
---|
12 | * The license and distribution terms for this file may be |
---|
13 | * found in the file LICENSE in this distribution or at |
---|
14 | * |
---|
15 | * http://www.rtems.org/license/LICENSE |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #include <rtems.h> |
---|
20 | #include <rtems/libio.h> |
---|
21 | |
---|
22 | #include <stdlib.h> |
---|
23 | |
---|
24 | #include <libchip/serial.h> |
---|
25 | #include <libchip/sersupp.h> |
---|
26 | |
---|
27 | #include <bsp.h> |
---|
28 | #include <bsp/fbcons.h> |
---|
29 | #include <bsp/vc.h> |
---|
30 | #include <bsp/rpi-fb.h> |
---|
31 | |
---|
32 | /* |
---|
33 | * fbcons_init |
---|
34 | * |
---|
35 | * This function initializes the fb console to a quiecsent state. |
---|
36 | */ |
---|
37 | static void fbcons_init( int minor ) |
---|
38 | { |
---|
39 | } |
---|
40 | |
---|
41 | /* |
---|
42 | * fbcons_open |
---|
43 | * |
---|
44 | * This function opens a port for communication. |
---|
45 | * |
---|
46 | * Default state is 9600 baud, 8 bits, No parity, and 1 stop bit. |
---|
47 | */ |
---|
48 | static int fbcons_open( |
---|
49 | int major, |
---|
50 | int minor, |
---|
51 | void *arg |
---|
52 | ) |
---|
53 | { |
---|
54 | return RTEMS_SUCCESSFUL; |
---|
55 | } |
---|
56 | |
---|
57 | /* |
---|
58 | * fbcons_close |
---|
59 | * |
---|
60 | * This function shuts down the requested port. |
---|
61 | */ |
---|
62 | static int fbcons_close( |
---|
63 | int major, |
---|
64 | int minor, |
---|
65 | void *arg |
---|
66 | ) |
---|
67 | { |
---|
68 | return ( RTEMS_SUCCESSFUL ); |
---|
69 | } |
---|
70 | |
---|
71 | /* |
---|
72 | * fbcons_write_polled |
---|
73 | * |
---|
74 | * This routine polls out the requested character. |
---|
75 | */ |
---|
76 | static void fbcons_write_polled( |
---|
77 | int minor, |
---|
78 | char c |
---|
79 | ) |
---|
80 | { |
---|
81 | rpi_fb_outch( c ); |
---|
82 | |
---|
83 | if ( c == '\n' ) |
---|
84 | rpi_fb_outch( '\r' ); /* LF = LF + CR */ |
---|
85 | } |
---|
86 | |
---|
87 | /* |
---|
88 | * fbcons_write_support_polled |
---|
89 | * |
---|
90 | * Console Termios output entry point when using polled output. |
---|
91 | * |
---|
92 | */ |
---|
93 | static ssize_t fbcons_write_support_polled( |
---|
94 | int minor, |
---|
95 | const char *buf, |
---|
96 | size_t len |
---|
97 | ) |
---|
98 | { |
---|
99 | int nwrite = 0; |
---|
100 | |
---|
101 | /* |
---|
102 | * poll each byte in the string out of the port. |
---|
103 | */ |
---|
104 | while ( nwrite < len ) { |
---|
105 | fbcons_write_polled( minor, *buf++ ); |
---|
106 | nwrite++; |
---|
107 | } |
---|
108 | |
---|
109 | /* |
---|
110 | * return the number of bytes written. |
---|
111 | */ |
---|
112 | return nwrite; |
---|
113 | } |
---|
114 | |
---|
115 | /* |
---|
116 | * fbcons_inbyte_nonblocking_polled |
---|
117 | * |
---|
118 | * Console Termios polling input entry point. |
---|
119 | */ |
---|
120 | static int fbcons_inbyte_nonblocking_polled( int minor ) |
---|
121 | { |
---|
122 | // if( rtems_kbpoll() ) { |
---|
123 | // int c = getch(); |
---|
124 | // return c; |
---|
125 | // } |
---|
126 | |
---|
127 | return -1; |
---|
128 | } |
---|
129 | |
---|
130 | /* |
---|
131 | * fbcons_set_attributes |
---|
132 | * |
---|
133 | * This function sets the UART channel to reflect the requested termios |
---|
134 | * port settings. |
---|
135 | */ |
---|
136 | static int fbcons_set_attributes( |
---|
137 | int minor, |
---|
138 | const struct termios *t |
---|
139 | ) |
---|
140 | { |
---|
141 | return 0; |
---|
142 | } |
---|
143 | |
---|
144 | bool fbcons_probe( int minor ) |
---|
145 | { |
---|
146 | // rtems_status_code status; |
---|
147 | static bool firstTime = true; |
---|
148 | static bool ret = false; |
---|
149 | |
---|
150 | /* |
---|
151 | * keyboard interrupt should be registered when the keyboard is available |
---|
152 | */ |
---|
153 | if ( firstTime ) { |
---|
154 | if ( !rpi_fb_hdmi_is_present() ) { |
---|
155 | ret = false; |
---|
156 | } else { |
---|
157 | ret = true; |
---|
158 | } |
---|
159 | } |
---|
160 | |
---|
161 | firstTime = false; |
---|
162 | |
---|
163 | return ret; |
---|
164 | } |
---|
165 | |
---|
166 | const console_fns fbcons_fns = |
---|
167 | { |
---|
168 | .deviceProbe = libchip_serial_default_probe, /* deviceProbe */ |
---|
169 | .deviceFirstOpen = fbcons_open, /* deviceFirstOpen */ |
---|
170 | .deviceLastClose = fbcons_close, /* deviceLastClose */ |
---|
171 | .deviceRead = fbcons_inbyte_nonblocking_polled, /* deviceRead */ |
---|
172 | .deviceWrite = fbcons_write_support_polled, /* deviceWrite */ |
---|
173 | .deviceInitialize = fbcons_init, /* deviceInitialize */ |
---|
174 | .deviceWritePolled = fbcons_write_polled, /* deviceWritePolled */ |
---|
175 | .deviceSetAttributes = fbcons_set_attributes, /* deviceSetAttributes */ |
---|
176 | .deviceOutputUsesInterrupts = FALSE, /* deviceOutputUsesInterrupts*/ |
---|
177 | }; |
---|