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* Clean up clock moduleRandall Spangler2012-10-301-2/+2
| | | | | | | | | | | | | | No functional changes; just code cleanup. On LM4 this also #ifdef's out the 'sleep' and 'pll' commands since they're big and we don't use them. BUG=chrome-os-partner:15579 BRANCH=none TEST=boot system Change-Id: I1b72d07d6cca2c783d7ac4c880119df3e88e356e Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/36799
* daisy: Modify charging flow to comply charging specificationRong Chang2012-08-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | This change corrects charger interrupt event handling, charger enable gpio, battery full condition, EC deep sleep mode support when AC unplugged, and lid controlled power off. Signed-off-by: Rong Chang <rongchang@chromium.org> BRANCH=snow BUG=chrome-os-partner:12573,12574,12575 TEST=manual - ec console command 'gpioget': - SPI1_MISO should be 0 when AP off - CHARGER_EN should be 0 after AC unplugged - charging led should be off after AC unplugged - when battery remaining charge < 3%, system should be powered off without AC. - ec console command 'sleepmask 0', turn off AP: - deep sleep only when AC unplugged Change-Id: I0f63835dae67d90de7a8c8c6c3537ca9a16faed4 Reviewed-on: https://gerrit.chromium.org/gerrit/30316 Commit-Ready: Rong Chang <rongchang@chromium.org> Reviewed-by: Rong Chang <rongchang@chromium.org> Tested-by: Rong Chang <rongchang@chromium.org>
* Enable PLL only briefly during ADC initRandall Spangler2012-08-091-8/+24
| | | | | | | | | | | | | | | | | | It was previously only enabled for 1500us during boot, but in a way that triggered a needless round of notifications to other modules. This is cleaner. This also fixes adc_init() not initializing the task IDs to wake when interrupts come in, and removes some unneeded code from other init functions. BUG=chrome-os-partner:12472 TEST=boot system and run adc command. Should still provide reasonable data. Change-Id: I9ae5857d988c727caf5d53f551a2f12b30974c0f Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/29806 Reviewed-by: Bill Richardson <wfrichar@chromium.org>
* stm32f100: implement low power modeVincent Palatin2012-08-091-0/+13
| | | | | | | | | | | | | | | | | | | | | When the AP is not running and we have enough time go to STOP mode instead of simple idle. The EC consumption should drop from 12mW to a few mW. This is currently not activated by default, you need to type "sleepmask 0" in the EC console to activate it. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BUG=chrome-os-partner:8866 TEST=on Snow, check the software is still working properly when STOP mode is activated and measure power consumption on 3v_alw rail. Change-Id: I231d76fe6494c07b198c41694755b82d87c00e75 Reviewed-on: https://gerrit.chromium.org/gerrit/29315 Tested-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
* Disable PLL at end of initRandall Spangler2012-04-241-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | This saves power. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=chrome-os-partner:8798 TEST=manual Get a proto1 system modified with INA current sensor 1) From chroot: dut-control i2c_mux_en:on i2c_mux:rem dut-control pp3300_alw_mv pp3300_alw_ma 2) From EC console: pll (this should turn the PLL back on; it'll report clock frequency ~66MHz) 3) From chroot: dut-control i2c_mux_en:on i2c_mux:rem dut-control pp3300_alw_mv pp3300_alw_ma Current (ma) should be bigger than in step 1 Change-Id: I806953684c57fd60bf481acb01dddffe2f2ad0ed
* Support dynamically changing the system clockRandall Spangler2012-04-091-5/+14
| | | | | | | | | | | | | | | | | | | | | | | Add nopll command to turn off the PLL, reducing the system clock to 16Mhz. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=chrome-os-partner:8798 TEST=manual boot system press power button to boot x86 temps // should print all temperatures timerinfo timerinfo timerinfo // convince yourself this is counting up at about 1MHz nopll // this drops the system clock to 16MHz temps // should still print all temperatures timerinfo timerinfo timerinfo // should still be counting up at about 1MHz Change-Id: Ie29ceb17af348148bffadf63d60c1b731f4c3f6d
* Initial sources import 3/3Vincent Palatin2011-12-071-0/+14
source files mainly done by Vincent. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Change-Id: Ic2d1becd400c9b4b4a14d4a243af1bdf77d9c1e2
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