FreeCalypso > hg > fc-tourmaline

annotate src/cs/layer1/cfile/l1_small_asm.S @ 51:04aaa5622fa7

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disable deep sleep when Iota LEDB is on TI's Iota chip docs say that CLK13M must be running in order for LEDB to work, and practical experience on Mot C139 which uses Iota LEDB for its keypad backlight concurs: if Calypso enters deep sleep while the keypad backlight is turned on, the light flickers visibly as the chipset goes into and out of deep sleep. TI's original L1 sleep manager code had logic to disable deep sleep when LT_Status() returns nonzero, but that function only works for B-Sample and C-Sample LT, always returns 0 on BOARD 41 - no check of Iota LEDB status anywhere. Change this code for our current hardware: disable deep sleep when Iota LEDB has been turned on through LLS.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 19 Oct 2020 05:11:29 +0000
parents 4e78acac3d88
children
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4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /*
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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2 * Assembly code extracted out of TI's l1_small.c
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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3 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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4 * This code is correct ONLY for CHIPSET 10 or 11 as currently used
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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5 * by FreeCalypso; see TI's original code for what changes would be
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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6 * needed to support other CHIPSETs.
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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7 */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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8
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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9 .text
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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10 .code 32
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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11
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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12 /*-------------------------------------------------------*/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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13 /* _GSM_Small_Sleep */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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14 /* (formerly INT_Small_Sleep) */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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15 /*-------------------------------------------------------*/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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16 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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17 /* Description: small sleep */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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18 /* ------------ */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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19 /* Called by TCT_Schedule main loop of Nucleus */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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20 /*-------------------------------------------------------*/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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21
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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22 #define SMALL_SLEEP 0x01
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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23 #define ALL_SLEEP 0x04
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24 #define BIG_SMALL_SLEEP 0x05
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25 #define PWR_MNGT 0x01
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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26
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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27 .globl _GSM_Small_Sleep
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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28 _GSM_Small_Sleep:
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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29
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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30 ldr r0,Switch
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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31 ldr r0,[r0]
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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32 ldrb r1,[r0]
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33 cmp r1,#PWR_MNGT
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34 bne TCT_Schedule_Loop
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35
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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36 ldr r0,Mode
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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37 ldr r0,[r0]
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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38 ldrb r1,[r0]
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39 cmp r1,#SMALL_SLEEP
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40 beq Small_sleep_ok
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41 cmp r1,#ALL_SLEEP
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42 beq Small_sleep_ok
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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43 cmp r1,#BIG_SMALL_SLEEP
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44 bne TCT_Schedule_Loop
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45
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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46 Small_sleep_ok:
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47
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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48 // *****************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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49 //reset the DEEP_SLEEP bit 12 of CNTL_ARM_CLK register
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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50 // (Cf BUG_1278)
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51
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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52 ldr r0,addrCLKM @ pick up CNTL_ARM_CLK register address
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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53 ldrh r1,[r0] @ take the current value of the register
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54 orr r1,r1,#0x1000 @ reset the bit
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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55 strh r1,[r0] @ store the result
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56
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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57 ldr r0,addrCLKM @ pick up CLKM clock register address
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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58 ldrh r1,[r0] @ take the current value of the register
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59 bic r1,r1,#1 @ disable ARM clock
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60 strh r1,[r0]
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61
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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62 B TCT_Schedule_Loop @ Return to TCT_Schedule main loop
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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63
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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64 addrCLKM: .word 0xfffffd00 @ CLKM clock register address
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65
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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66 Mode: .word mode_authorized
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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67 Switch: .word switch_PWR_MNGT