Nope, mine is based on 4.1. This patch was adapted by Robert from code that was written for 3.8.
Regards, John > On Apr 17, 2016, at 4:52 PM, William Hermans <yyrk...@gmail.com> wrote: > > The real reason why our source trees do not match up. My source tree is based > on 4.1.x, and yours seems to be 3.8.x. The patch you showed above would > probably botch up my source tree . . . > > On Sun, Apr 17, 2016 at 4:33 PM, William Hermans <yyrk...@gmail.com > <mailto:yyrk...@gmail.com>> wrote: > Yeah I recognize that code from source code not written by TI employees. The > file is called tps65217_charger.c, and is written by an employee of another > company. > > Anyway, I think we're going to blow this off. The idea was to wait around > without power for 5 minutes, to see if power comes back up. Before issuing a > shutdown. Then, on the power up end, using a simple R/C circuit to ramp up > voltage to 5v over a specific time period. > > By the way, my local source tree is already patched with Robert's BBB > patches. > > On Sun, Apr 17, 2016 at 4:19 PM, John Syne <john3...@gmail.com > <mailto:john3...@gmail.com>> wrote: > Apply this patch: > > From 51b4d415971bb052a26938791337d1050bf94748 Mon Sep 17 00:00:00 2001 > From: Robert Nelson <robertcnel...@gmail.com <mailto:robertcnel...@gmail.com>> > Date: Mon, 26 Oct 2015 11:42:13 -0500 > Subject: [PATCH 8/9] tps65217: Enable KEY_POWER press on AC loss / PWR_BUT > > This is an adaption to v3.14.x of the original patch by Andrew Bradford > <andrew.bradf...@omni-id.com <mailto:andrew.bradf...@omni-id.com>> > Some minor devm_* changes and DT support done by Pantelis Antoniou > <pa...@antoniou-consulting.com <mailto:pa...@antoniou-consulting.com>> for > 3.8.x > > Signed-off-by: Robert Nelson <robertcnel...@gmail.com > <mailto:robertcnel...@gmail.com>> > --- > arch/arm/boot/dts/am335x-bone-common.dtsi | 3 + > drivers/mfd/tps65217.c | 122 > +++++++++++++++++++++++++++++- > include/linux/mfd/tps65217.h | 5 ++ > 3 files changed, 128 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi > b/arch/arm/boot/dts/am335x-bone-common.dtsi > index 29c0c7e..393af39 100644 > --- a/arch/arm/boot/dts/am335x-bone-common.dtsi > +++ b/arch/arm/boot/dts/am335x-bone-common.dtsi > @@ -330,6 +330,9 @@ > */ > ti,pmic-shutdown-controller; > > + interrupt-parent = <&intc>; > + interrupts = <7>; /* NNMI */ > + > regulators { > dcdc1_reg: regulator@0 { > regulator-name = "vdds_dpr"; > diff --git a/drivers/mfd/tps65217.c b/drivers/mfd/tps65217.c > index 7d1cfc1..0730431 100644 > --- a/drivers/mfd/tps65217.c > +++ b/drivers/mfd/tps65217.c > @@ -24,8 +24,12 @@ > #include <linux/slab.h> > #include <linux/regmap.h> > #include <linux/err.h> > +#include <linux/input.h> > #include <linux/of.h> > #include <linux/of_device.h> > +#include <linux/of_irq.h> > +#include <linux/of_gpio.h> > +#include <linux/interrupt.h> > > #include <linux/mfd/core.h> > #include <linux/mfd/tps65217.h> > @@ -157,6 +161,82 @@ static const struct of_device_id tps65217_of_match[] = { > { /* sentinel */ }, > }; > > +static irqreturn_t tps65217_irq(int irq, void *irq_data) > +{ > + struct tps65217 *tps = irq_data; > + unsigned int int_reg = 0, status_reg = 0; > + > + tps65217_reg_read(tps, TPS65217_REG_INT, &int_reg); > + tps65217_reg_read(tps, TPS65217_REG_STATUS, &status_reg); > + if (status_reg) > + dev_dbg(tps->dev, "status now: 0x%X\n", status_reg); > + > + if (!int_reg) > + return IRQ_NONE; > + > + if (int_reg & TPS65217_INT_PBI) { > + /* Handle push button */ > + dev_dbg(tps->dev, "power button status change\n"); > + input_report_key(tps->pwr_but, KEY_POWER, > + status_reg & TPS65217_STATUS_PB); > + input_sync(tps->pwr_but); > + } > + if (int_reg & TPS65217_INT_ACI) { > + /* Handle AC power status change */ > + dev_dbg(tps->dev, "AC power status change\n"); > + /* Press KEY_POWER when AC not present */ > + input_report_key(tps->pwr_but, KEY_POWER, > + ~status_reg & TPS65217_STATUS_ACPWR); > + input_sync(tps->pwr_but); > + } > + if (int_reg & TPS65217_INT_USBI) { > + /* Handle USB power status change */ > + dev_dbg(tps->dev, "USB power status change\n"); > + } > + > + return IRQ_HANDLED; > +} > + > +static int tps65217_probe_pwr_but(struct tps65217 *tps) > +{ > + int ret; > + unsigned int int_reg; > + > + tps->pwr_but = devm_input_allocate_device(tps->dev); > + if (!tps->pwr_but) { > + dev_err(tps->dev, > + "Failed to allocated pwr_but input device\n"); > + return -ENOMEM; > + } > + > + tps->pwr_but->evbit[0] = BIT_MASK(EV_KEY); > + tps->pwr_but->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER); > + tps->pwr_but->name = "tps65217_pwr_but"; > + ret = input_register_device(tps->pwr_but); > + if (ret) { > + /* NOTE: devm managed device */ > + dev_err(tps->dev, "Failed to register button device\n"); > + return ret; > + } > + ret = devm_request_threaded_irq(tps->dev, > + tps->irq, NULL, tps65217_irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT, > + "tps65217", tps); > + if (ret != 0) { > + dev_err(tps->dev, "Failed to request IRQ %d\n", tps->irq); > + return ret; > + } > + > + /* enable the power button interrupt */ > + ret = tps65217_reg_read(tps, TPS65217_REG_INT, &int_reg); > + if (ret < 0) { > + dev_err(tps->dev, "Failed to read INT reg\n"); > + return ret; > + } > + int_reg &= ~TPS65217_INT_PBM; > + tps65217_reg_write(tps, TPS65217_REG_INT, int_reg, > TPS65217_PROTECT_NONE); > + return 0; > +} > + > static int tps65217_probe(struct i2c_client *client, > const struct i2c_device_id *ids) > { > @@ -164,10 +244,13 @@ static int tps65217_probe(struct i2c_client *client, > unsigned int version; > unsigned long chip_id = ids->driver_data; > const struct of_device_id *match; > + struct device_node *node; > bool status_off = false; > + int irq = -1, irq_gpio = -1; > int ret; > > - if (client->dev.of_node) { > + node = client->dev.of_node; > + if (node) { > match = of_match_device(tps65217_of_match, &client->dev); > if (!match) { > dev_err(&client->dev, > @@ -175,8 +258,31 @@ static int tps65217_probe(struct i2c_client *client, > return -EINVAL; > } > chip_id = (unsigned long)match->data; > - status_off = of_property_read_bool(client->dev.of_node, > + status_off = of_property_read_bool(node, > "ti,pmic-shutdown-controller"); > + > + /* at first try to get irq via OF method */ > + irq = irq_of_parse_and_map(node, 0); > + if (irq <= 0) { > + irq = -1; > + irq_gpio = of_get_named_gpio(node, "irq-gpio", 0); > + if (irq_gpio >= 0) { > + /* valid gpio; convert to irq */ > + ret = devm_gpio_request_one(&client->dev, > + irq_gpio, GPIOF_DIR_IN, > + "tps65217-gpio-irq"); > + if (ret != 0) > + dev_warn(&client->dev, "Failed to " > + "request gpio #%d\n", irq_gpio); > + irq = gpio_to_irq(irq_gpio); > + if (irq <= 0) { > + dev_warn(&client->dev, "Failed to " > + "convert gpio #%d to irq\n", > + irq_gpio); > + irq = -1; > + } > + } > + } > } > > if (!chip_id) { > @@ -200,6 +306,18 @@ static int tps65217_probe(struct i2c_client *client, > return ret; > } > > + tps->irq = irq; > + tps->irq_gpio = irq_gpio; > + > + /* we got an irq, request it */ > + if (tps->irq >= 0) { > + ret = tps65217_probe_pwr_but(tps); > + if (ret < 0) { > + dev_err(tps->dev, "Failed to probe pwr_but\n"); > + return ret; > + } > + } > + > ret = mfd_add_devices(tps->dev, -1, tps65217s, > ARRAY_SIZE(tps65217s), NULL, 0, NULL); > if (ret < 0) { > diff --git a/include/linux/mfd/tps65217.h b/include/linux/mfd/tps65217.h > index ac7fba4..05d24a6 100644 > --- a/include/linux/mfd/tps65217.h > +++ b/include/linux/mfd/tps65217.h > @@ -257,6 +257,11 @@ struct tps65217 { > unsigned long id; > struct regulator_desc desc[TPS65217_NUM_REGULATOR]; > struct regmap *regmap; > + > + /* Power button and IRQ handling */ > + int irq_gpio; /* might not be set */ > + int irq; > + struct input_dev *pwr_but; > }; > > static inline struct tps65217 *dev_to_tps65217(struct device *dev) > -- > 2.6.2 > > Regards, > John > > > > >> On Apr 17, 2016, at 4:05 PM, William Hermans <yyrk...@gmail.com >> <mailto:yyrk...@gmail.com>> wrote: >> >> I'll *NOT* be using a TI kernel, period. >> >> On Sun, Apr 17, 2016 at 4:02 PM, John Syne <john3...@gmail.com >> <mailto:john3...@gmail.com>> wrote: >> OK, I see the problem. The file I was looking at is different to the one you >> linked to. I am using the 4.1.13-ti-r33 kernel, which means that you are >> missing a patch. Build your own kernel and then look at this file again. >> >> Regards, >> John >> >> >> >> >>> On Apr 17, 2016, at 3:55 PM, William Hermans <yyrk...@gmail.com >>> <mailto:yyrk...@gmail.com>> wrote: >>> >>> https://github.com/torvalds/linux/blob/master/drivers/mfd/tps65217.c#L164 >>> <https://github.com/torvalds/linux/blob/master/drivers/mfd/tps65217.c#L164> >>> >>> Nothing there at line 164, then on line 165 starts a function. Which >>> contains the code I linked to yesterday. Which is the power push button >>> code. Which again, is not helping . . . So let's walk through that >>> function. Which happens in this order . .. >>> >>> variable type definitions declarations. >>> conditional check to find device tree definition node. >>> test chip_id, return if failure. >>> attempt and test to allocate memory for the tps object. >>> attempt to map the tps object to the PMIC registers >>> mfd device add, and test device add. >>> attempt to read the PMIC registers, and test return code. >>> >>> Here it gets a bit fuzzy however, it seems as though the code is attempting >>> to reset the system by setting various register bits in the PMIC ?! I know >>> all about the registers of the PMIC, or rather can find otu what is what >>> really quick by reading the datasheet which I have right in front of me. >>> That is not what I'm having an issue grasping. It seems to me that a >>> shutdown in this manner would not be clean. However, it could be that >>> setting these register bits as such may not cause an immediate power down. >>> *That* is what I find unclear. >>> >>> /* Set the PMIC to shutdown on PWR_EN toggle */ >>> if (status_off) { >>> ret = tps65217_set_bits(tps, TPS65217_REG_STATUS, >>> TPS65217_STATUS_OFF, TPS65217_STATUS_OFF, >>> TPS65217_PROTECT_NONE); >>> if (ret) >>> dev_warn(tps->dev, "unable to set the status OFF\n"); >>> } >>> >>> The comment above the code seems to indicate that PWR_EN is causing a >>> shutdown based on being toggle. However, PWR_EN is *NOT* a button, or even >>> a line connected to a button. From the data sheet . . . >>> >>> PWR_EN >>> Enable input for DCDC1, 2, 3 converters and LDO1, 2, 3, 4. Pull this pin >>> high to start the >>> power-up sequence. >>> >>> In the schematic, PWR_EN is not connected to any button. Period. The >>> button is connected to PB_IN. >>> >>> Anyway, the rest of the code is inconsequential. >>> >>> On Sun, Apr 17, 2016 at 3:23 PM, John Syne <john3...@gmail.com >>> <mailto:john3...@gmail.com>> wrote: >>> Never mind, I found it. >>> >>> drivers/mfd/tps65217.c line 164 >>> >>> Regards, >>> John >>> >>> >>> >>> >>>> On Apr 17, 2016, at 2:37 PM, William Hermans <yyrk...@gmail.com >>>> <mailto:yyrk...@gmail.com>> wrote: >>>> >>>> So no one has any idea ? I'm looking for the module, that traps power >>>> events, and shuts down the BBB. All I need is a file name. It's pretty >>>> hard making sense of the mess that is /drivers/mfd, and the documentation >>>> does not seem to be helpful either. >>>> >>>> Documentation/power/regulator/charger-management.txt does not exist in my >>>> repo, nor in Linus' repo either. There is a similar file, but nothing >>>> apparently related to our hardware. Passed that, most of the stuff int the >>>> Documentation/power directory seems to be related to ACPI, which again, >>>> has nothing to do with even our architecture . . . >>>> >>>> On Sat, Apr 16, 2016 at 9:09 PM, William Hermans <yyrk...@gmail.com >>>> <mailto:yyrk...@gmail.com>> wrote: >>>> So I've only found this so far. >>>> https://github.com/torvalds/linux/blob/master/drivers/mfd/tps65217.c#L222-#L229 >>>> >>>> <https://github.com/torvalds/linux/blob/master/drivers/mfd/tps65217.c#L222-%23L229> >>>> >>>> Which I pretty much had already figured out this morning right after I >>>> posted. Pretty much, the PMIC sees a condition, that needs attention. It >>>> writes some values to registers that relate to the given condition, and >>>> then sends an NMI out to the am335x processor. Where the am335x processor >>>> immediately picks up that the PMIC needs attention( the whole point of an >>>> NMI ), reads the register values out of the PMIC to determine what action >>>> needs to be taken. Which in the case of the power button being pressed. >>>> the am335x issues a shutdown now -h ( Linux ) Which looking at the code, >>>> actually seems like the LKM is actually writing to the PMIC registers to >>>> do this ?! >>>> >>>> Anyway, no idea how a power good condition is being acted on *still*. >>>> Meaning, no idea how when a battery is connected, when the external power >>>> somehow goes missing. How that particular shutdown is happening, and from >>>> where. >>>> >>>> On Sat, Apr 16, 2016 at 4:32 PM, John Syne <john3...@gmail.com >>>> <mailto:john3...@gmail.com>> wrote: >>>> I’m not sure, but best place to look would be >>>> Documentation/power/regulator/charger-management.txt. I believe the PMIC >>>> issues event when AC is removed. >>>> >>>> Regards, >>>> John >>>> >>>> >>>> >>>> >>>>> On Apr 16, 2016, at 12:59 PM, William Hermans <yyrk...@gmail.com >>>>> <mailto:yyrk...@gmail.com>> wrote: >>>>> >>>>> Also from what I've read this behavior is different between console and >>>>> LXDE images. So if this is true I understand that. I do not want the >>>>> behaviors that each of these images provides, but wish to customize my >>>>> own. >>>>> >>>>> >>>>> On Sat, Apr 16, 2016 at 12:55 PM, William Hermans <yyrk...@gmail.com >>>>> <mailto:yyrk...@gmail.com>> wrote: >>>>> When a battery is connected to a beaglebone black, how does the software >>>>> know to issue a shutdown when power is no longer coming in ? More >>>>> specifically I'm interested in which file / script performs this action, >>>>> and what mechanism triggers this behavior. >>>>> >>>>> My intentions are to modify / customize what actually happens when power >>>>> to the board is battery only. >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> For more options, visit http://beagleboard.org/discuss >>>>> <http://beagleboard.org/discuss> >>>>> --- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "BeagleBoard" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>> email to beagleboard+unsubscr...@googlegroups.com >>>>> <mailto:beagleboard+unsubscr...@googlegroups.com>. >>>>> For more options, visit https://groups.google.com/d/optout >>>>> <https://groups.google.com/d/optout>. >>>>> >>>>> >>>>> -- >>>>> For more options, visit http://beagleboard.org/discuss >>>>> <http://beagleboard.org/discuss> >>>>> --- >>>>> You received this message because you are 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<https://groups.google.com/d/msgid/beagleboard/CALHSORqNNeWN9uW_WDsTQC%2BNuArTq%2BtjGMVO5a%2Be-S6cyDk21w%40mail.gmail.com?utm_medium=email&utm_source=footer>. >>>> For more options, visit https://groups.google.com/d/optout >>>> <https://groups.google.com/d/optout>. >>> >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> <http://beagleboard.org/discuss> >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to beagleboard+unsubscr...@googlegroups.com >>> <mailto:beagleboard+unsubscr...@googlegroups.com>. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/beagleboard/D02D2BC4-66ED-434B-B7D9-66154797FDB7%40gmail.com >>> >>> <https://groups.google.com/d/msgid/beagleboard/D02D2BC4-66ED-434B-B7D9-66154797FDB7%40gmail.com?utm_medium=email&utm_source=footer>. >>> >>> For more options, visit 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