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annotate target-utils/lunadrv/sleep.c @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents 57f7db8c4f45
children
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849
a66095c7f35f lunadrv: add suspend and resume commands
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1 /*
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2 * This module implements suspend and resume commands for entering
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3 * and exiting ILI9225G sleep mode. These commands are expected
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4 * to work the same on both HaoRan and Formike LCDs, but the
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5 * current measurement resistor that allows one to see the actual
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6 * power supply current drawn by the LCD is present only on lunalcd2
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7 * boards.
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8 */
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9
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10 #include "types.h"
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11 #include "luna.h"
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12
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13 void
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14 cmd_suspend()
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15 {
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16 LCD_REG_WR(0x0007, 0); /* display off */
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17 wait_ARM_cycles(DELAY_1MS * 50);
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18 LCD_REG_WR(0x0010, 1); /* suspend mode */
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19 }
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20
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21 void
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22 cmd_resume()
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23 {
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24 LCD_REG_WR(0x0010, 0); /* out of suspend */
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25 wait_ARM_cycles(DELAY_1MS * 50);
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26 LCD_REG_WR(0x0007, 0x1017); /* display on */
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27 }
865
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28
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29 /*
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30 * If we wish to run sans-UI firmware on an LCD-equipped board,
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31 * we would like to put the ILI9225G controller into its lowest
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32 * power mode, without doing anything else to it. The following
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33 * reset-suspend command prototypes this functionality.
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34 */
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35
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36 void
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37 cmd_reset_suspend()
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38 {
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39 /* reset pulse */
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40 CNTL_RST_REG |= EXT_RESET;
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41 wait_ARM_cycles(DELAY_1MS * 10);
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42 CNTL_RST_REG &= ~EXT_RESET;
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43 /* datasheet says it needs 50 ms */
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44 wait_ARM_cycles(DELAY_1MS * 50);
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45 /* and straight into suspend mode */
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46 LCD_REG_WR(0x0010, 1);
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47 }