recipes-bsp/u-boot/u-boot/0011-Add-led-command.patch

   1 From e3e94bd49df4b4588cc5c95392b872eadb531fc4 Mon Sep 17 00:00:00 2001
   2 From: Jason Kridner <jkridner@beagleboard.org>
   3 Date: Thu, 20 May 2010 05:41:26 -0500
   4 Subject: [PATCH 11/16] Add 'led' command
   5
   6 This patch allows any board implementing the coloured LED API
   7 to control the LEDs from the console.
   8
   9 led [green | yellow | red | all ]  [ on | off ]
  10
  11 or
  12
  13 led [ 1 | 2 | 3 | all ]  [ on | off ]
  14
  15 Adds configuration item CONFIG_CMD_LED enabling the command.
  16
  17 Partially based on patch from Ulf Samuelsson:
  18 http://www.mail-archive.com/u-boot@lists.denx.de/msg09593.html.
  19
  20 Updated based on feedback:
  21 http://www.mail-archive.com/u-boot@lists.denx.de/msg41847.html
  22 https://groups.google.com/d/topic/beagleboard/8Wf1HiK_QBo/discussion
  23 * Fixed a handful of style issues.
  24 * Significantly reduced the number of #ifdefs and redundant code
  25 * Converted redundant code into loops test against a structure
  26 * Made use of cmd_usage()
  27 * Introduced a str_onoff() function, but haven't yet put it in common
  28 * Eliminated trailing newline
  29
  30 v2 updates
  31  * Test every LED in case "all" is used.  Previously, the code broke from
  32    the loop after setting the state of only one LED.
  33  * Corrected swapped on/off in structure definition
  34  * Removed trailing white space
  35 ---
  36  common/Makefile  |    1 +
  37  common/cmd_led.c |  152 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
  38  2 files changed, 153 insertions(+), 0 deletions(-)
  39  create mode 100644 common/cmd_led.c
  40
  41 diff --git a/common/Makefile b/common/Makefile
  42 index 048df0c..29a0ead 100644
  43 --- a/common/Makefile
  44 +++ b/common/Makefile
  45 @@ -105,6 +105,7 @@ COBJS-$(CONFIG_CMD_IRQ) += cmd_irq.o
  46  COBJS-$(CONFIG_CMD_ITEST) += cmd_itest.o
  47  COBJS-$(CONFIG_CMD_JFFS2) += cmd_jffs2.o
  48  COBJS-$(CONFIG_CMD_CRAMFS) += cmd_cramfs.o
  49 +COBJS-$(CONFIG_CMD_LED) += cmd_led.o
  50  COBJS-$(CONFIG_CMD_LICENSE) += cmd_license.o
  51  COBJS-y += cmd_load.o
  52  COBJS-$(CONFIG_LOGBUFFER) += cmd_log.o
  53 diff --git a/common/cmd_led.c b/common/cmd_led.c
  54 new file mode 100644
  55 index 0000000..7f02fe6
  56 --- /dev/null
  57 +++ b/common/cmd_led.c
  58 @@ -0,0 +1,152 @@
  59 +/*
  60 + * (C) Copyright 2010
  61 + * Jason Kridner <jkridner@beagleboard.org>
  62 + *
  63 + * Based on cmd_led.c patch from:
  64 + * http://www.mail-archive.com/u-boot@lists.denx.de/msg06873.html
  65 + * (C) Copyright 2008
  66 + * Ulf Samuelsson <ulf.samuelsson@atmel.com>
  67 + *
  68 + * See file CREDITS for list of people who contributed to this
  69 + * project.
  70 + *
  71 + * This program is free software; you can redistribute it and/or
  72 + * modify it under the terms of the GNU General Public License as
  73 + * published by the Free Software Foundation; either version 2 of
  74 + * the License, or (at your option) any later version.
  75 + *
  76 + * This program is distributed in the hope that it will be useful,
  77 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
  78 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.         See the
  79 + * GNU General Public License for more details.
  80 + *
  81 + * You should have received a copy of the GNU General Public License
  82 + * along with this program; if not, write to the Free Software
  83 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  84 + * MA 02111-1307 USA
  85 + */
  86 +
  87 +#include <common.h>
  88 +#include <config.h>
  89 +#include <command.h>
  90 +#include <status_led.h>
  91 +
  92 +struct led_tbl_s {
  93 +       char            *string;        /* String for use in the command */
  94 +       led_id_t        mask;           /* Mask used for calling __led_set() */
  95 +       void            (*off)(void);   /* Optional fucntion for turning LED off */
  96 +       void            (*on)(void);    /* Optional fucntion for turning LED on */
  97 +};
  98 +
  99 +typedef struct led_tbl_s led_tbl_t;
 100 +
 101 +static const led_tbl_t led_commands[] = {
 102 +#ifdef CONFIG_BOARD_SPECIFIC_LED
 103 +#ifdef STATUS_LED_BIT
 104 +       { "0", STATUS_LED_BIT, NULL, NULL },
 105 +#endif
 106 +#ifdef STATUS_LED_BIT1
 107 +       { "1", STATUS_LED_BIT1, NULL, NULL },
 108 +#endif
 109 +#ifdef STATUS_LED_BIT2
 110 +       { "2", STATUS_LED_BIT2, NULL, NULL },
 111 +#endif
 112 +#ifdef STATUS_LED_BIT3
 113 +       { "3", STATUS_LED_BIT3, NULL, NULL },
 114 +#endif
 115 +#endif
 116 +#ifdef STATUS_LED_GREEN
 117 +       { "green", STATUS_LED_GREEN, green_LED_off, green_LED_on },
 118 +#endif
 119 +#ifdef STATUS_LED_YELLOW
 120 +       { "yellow", STATUS_LED_YELLOW, yellow_LED_off, yellow_LED_on },
 121 +#endif
 122 +#ifdef STATUS_LED_RED
 123 +       { "red", STATUS_LED_RED, red_LED_off, red_LED_on },
 124 +#endif
 125 +#ifdef STATUS_LED_BLUE
 126 +       { "blue", STATUS_LED_BLUE, blue_LED_off, blue_LED_on },
 127 +#endif
 128 +       { NULL, 0, NULL, NULL }
 129 +};
 130 +
 131 +int str_onoff (char *var)
 132 +{
 133 +       if (strcmp(var, "off") == 0) {
 134 +               return 0;
 135 +       }
 136 +       if (strcmp(var, "on") == 0) {
 137 +               return 1;
 138 +       }
 139 +       return -1;
 140 +}
 141 +
 142 +int do_led (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 143 +{
 144 +       int state, i;
 145 +
 146 +       /* Validate arguments */
 147 +       if ((argc != 3)) {
 148 +               return cmd_usage(cmdtp);
 149 +       }
 150 +
 151 +       state = str_onoff(argv[2]);
 152 +       if (state < 0) {
 153 +               return cmd_usage(cmdtp);
 154 +       }
 155 +
 156 +       for (i = 0; led_commands[i].string; i++) {
 157 +               if ((strcmp("all", argv[1]) == 0) ||
 158 +                   (strcmp(led_commands[i].string, argv[1]) == 0)) {
 159 +                       if (led_commands[i].on) {
 160 +                               if (state) {
 161 +                                       led_commands[i].on();
 162 +                               } else {
 163 +                                       led_commands[i].off();
 164 +                               }
 165 +                       } else {
 166 +                               __led_set(led_commands[i].mask, state);
 167 +                       }
 168 +               }
 169 +       }
 170 +
 171 +       /* If we ran out of matches, print Usage */
 172 +       if (!led_commands[i].string && !(strcmp("all", argv[1]) == 0)) {
 173 +               return cmd_usage(cmdtp);
 174 +       }
 175 +
 176 +       return 0;
 177 +}
 178 +
 179 +U_BOOT_CMD(
 180 +       led, 3, 1, do_led,
 181 +       "led\t- ["
 182 +#ifdef CONFIG_BOARD_SPECIFIC_LED
 183 +#ifdef STATUS_LED_BIT
 184 +       "0|"
 185 +#endif
 186 +#ifdef STATUS_LED_BIT1
 187 +       "1|"
 188 +#endif
 189 +#ifdef STATUS_LED_BIT2
 190 +       "2|"
 191 +#endif
 192 +#ifdef STATUS_LED_BIT3
 193 +       "3|"
 194 +#endif
 195 +#endif
 196 +#ifdef STATUS_LED_GREEN
 197 +       "green|"
 198 +#endif
 199 +#ifdef STATUS_LED_YELLOW
 200 +       "yellow|"
 201 +#endif
 202 +#ifdef STATUS_LED_RED
 203 +       "red|"
 204 +#endif
 205 +#ifdef STATUS_LED_BLUE
 206 +       "blue|"
 207 +#endif
 208 +       "all] [on|off]\n",
 209 +       "led [led_name] [on|off] sets or clears led(s)\n"
 210 +);
 211 --
 212 1.6.6.1
 213