Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753354AbbBXU5g (ORCPT ); Tue, 24 Feb 2015 15:57:36 -0500 Received: from cantor2.suse.de ([195.135.220.15]:36394 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753105AbbBXU5e (ORCPT ); Tue, 24 Feb 2015 15:57:34 -0500 From: NeilBrown To: Samuel Ortiz , Tony Lindgren , Lee Jones , Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse Date: Tue, 24 Feb 2015 15:33:53 +1100 Subject: [PATCH 13/15] twl4030_charger: add ac/mode to match usb/mode Cc: GTA04 owners , linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Message-ID: <20150224043352.4243.8071.stgit@notabene.brown> In-Reply-To: <20150224043341.4243.23291.stgit@notabene.brown> References: <20150224043341.4243.23291.stgit@notabene.brown> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4356 Lines: 124 This allows AC charging to be turned off, much like usb charging. "continuous" (aka "linear") mode maps to the CVENAC (constant voltage) feature of the twl4030. Signed-off-by: NeilBrown --- drivers/power/twl4030_charger.c | 40 +++++++++++++++++++++++++++++---------- 1 file changed, 30 insertions(+), 10 deletions(-) diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c index 6c53f0b601a4..e5a0225ea87e 100644 --- a/drivers/power/twl4030_charger.c +++ b/drivers/power/twl4030_charger.c @@ -112,7 +112,7 @@ struct twl4030_bci { int ichg_eoc, ichg_lo, ichg_hi; int usb_cur, ac_cur; bool ac_is_active; - int usb_mode; /* charging mode requested */ + int usb_mode, ac_mode; /* charging mode requested */ #define CHARGE_OFF 0 #define CHARGE_AUTO 1 #define CHARGE_LINEAR 2 @@ -449,12 +449,18 @@ static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable) /* * Enable/Disable AC Charge funtionality. */ -static int twl4030_charger_enable_ac(bool enable) +static int twl4030_charger_enable_ac(struct twl4030_bci *bci, bool enable) { int ret; - if (enable) - ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOAC); + if (bci->ac_mode == CHARGE_OFF) + enable = false; + + if (enable && bci->ac_mode == CHARGE_LINEAR) + ret = twl4030_clear_set_boot_bci(0, (TWL4030_CVENAC | + TWL4030_BCIAUTOAC)); + else if (enable) + ret = twl4030_clear_set_boot_bci(TWL4030_CVENAC, TWL4030_BCIAUTOAC); else ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOAC, 0); @@ -688,9 +694,15 @@ twl4030_bci_mode_store(struct device *dev, struct device_attribute *attr, mode = 2; else return -EINVAL; - twl4030_charger_enable_usb(bci, false); - bci->usb_mode = mode; - status = twl4030_charger_enable_usb(bci, true); + if (dev == bci->ac.dev) { + twl4030_charger_enable_ac(bci, false); + bci->ac_mode = mode; + status = twl4030_charger_enable_ac(bci, true); + } else { + twl4030_charger_enable_usb(bci, false); + bci->usb_mode = mode; + status = twl4030_charger_enable_usb(bci, true); + } return (status == 0) ? n : status; } @@ -704,9 +716,13 @@ twl4030_bci_mode_show(struct device *dev, struct twl4030_bci *bci = dev_get_drvdata(dev->parent); int len = 0; int i; + int mode = bci->usb_mode; + + if (dev == bci->ac.dev) + mode = bci->ac_mode; for (i = 0; i < ARRAY_SIZE(modes); i++) - if (bci->usb_mode == i) + if (mode == i) len += snprintf(buf+len, PAGE_SIZE-len, "[%s] ", modes[i]); else @@ -900,6 +916,7 @@ static int __init twl4030_bci_probe(struct platform_device *pdev) else bci->usb_cur = 100000; /* 100mA */ bci->usb_mode = CHARGE_AUTO; + bci->ac_mode = CHARGE_AUTO; bci->dev = &pdev->dev; bci->irq_chg = platform_get_irq(pdev, 0); @@ -988,10 +1005,12 @@ static int __init twl4030_bci_probe(struct platform_device *pdev) dev_warn(&pdev->dev, "could not create sysfs file\n"); if (device_create_file(bci->usb.dev, &dev_attr_mode)) dev_warn(&pdev->dev, "could not create sysfs file\n"); + if (device_create_file(bci->ac.dev, &dev_attr_mode)) + dev_warn(&pdev->dev, "could not create sysfs file\n"); if (device_create_file(bci->ac.dev, &dev_attr_max_current)) dev_warn(&pdev->dev, "could not create sysfs file\n"); - twl4030_charger_enable_ac(true); + twl4030_charger_enable_ac(bci, true); if (!IS_ERR_OR_NULL(bci->transceiver)) twl4030_bci_usb_ncb(&bci->usb_nb, bci->transceiver->last_event, @@ -1014,13 +1033,14 @@ static int __exit twl4030_bci_remove(struct platform_device *pdev) { struct twl4030_bci *bci = platform_get_drvdata(pdev); - twl4030_charger_enable_ac(false); + twl4030_charger_enable_ac(bci, false); twl4030_charger_enable_usb(bci, false); twl4030_charger_enable_backup(0, 0); device_remove_file(bci->usb.dev, &dev_attr_max_current); device_remove_file(bci->ac.dev, &dev_attr_max_current); device_remove_file(bci->usb.dev, &dev_attr_mode); + device_remove_file(bci->ac.dev, &dev_attr_mode); /* mask interrupts */ twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, TWL4030_INTERRUPTS_BCIIMR1A); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/