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