From 79d6680f017a8084ae746f5d845a4fdc4f3a5e43 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Fri, 20 Apr 2012 15:29:20 -0600 Subject: usb: otg: isp1301_omap: resolve unused variable warning from gcc Resolve this build warning: drivers/usb/otg/isp1301_omap.c: In function 'isp1301_set_peripheral': drivers/usb/otg/isp1301_omap.c:1340:6: warning: unused variable 'l' This shows up when building with the 'omap1_defconfig' and '5912osk_testconfig' configs from git://git.pwsan.com/omap_kconfigs. Compile-tested only. Cc: Heikki Krogerus Cc: Felipe Balbi Signed-off-by: Paul Walmsley Signed-off-by: Felipe Balbi --- drivers/usb/otg/isp1301_omap.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c index 70cf5d7bca48..33cd709b084e 100644 --- a/drivers/usb/otg/isp1301_omap.c +++ b/drivers/usb/otg/isp1301_omap.c @@ -1336,9 +1336,6 @@ static int isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) { struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); -#ifndef CONFIG_USB_OTG - u32 l; -#endif if (!otg || isp != the_transceiver) return -ENODEV; @@ -1365,10 +1362,14 @@ isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) otg->gadget = gadget; // FIXME update its refcount - l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; - l &= ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS); - l |= OTG_ID; - omap_writel(l, OTG_CTRL); + { + u32 l; + + l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; + l &= ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS); + l |= OTG_ID; + omap_writel(l, OTG_CTRL); + } power_up(isp); isp->phy.state = OTG_STATE_B_IDLE; -- cgit v1.2.2 From 6b03b13336ee5d8da7bda8799c9ed990e3daedcc Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 14 Jun 2012 13:24:42 +0300 Subject: usb: otg: twl: add missing IRQF_ONESHOT this patch fixes the following warning: [ 2.825378] genirq: Threaded irq requested \ with handler=NULL and !ONESHOT for irq 363 Signed-off-by: Felipe Balbi --- drivers/usb/otg/twl4030-usb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index c4a86da858e2..02979306bf83 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -651,8 +651,8 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) */ twl->irq_enabled = true; status = request_threaded_irq(twl->irq, NULL, twl4030_usb_irq, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, - "twl4030_usb", twl); + IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | + IRQF_ONESHOT, "twl4030_usb", twl); if (status < 0) { dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n", twl->irq, status); -- cgit v1.2.2 From 721002ec1dd55a52425455826af49cf8853b2d4f Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 22 Jun 2012 17:02:45 +0530 Subject: usb: otg: utils: rename function name in OTG utils _transceiver() in otg.c is replaced with _phy. usb_set_transceiver is replaced with usb_add_phy to make it similar to other usb standard function names like usb_add_hcd. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/ab8500-usb.c | 4 ++-- drivers/usb/otg/fsl_otg.c | 6 +++--- drivers/usb/otg/gpio_vbus.c | 4 ++-- drivers/usb/otg/isp1301_omap.c | 4 ++-- drivers/usb/otg/msm_otg.c | 6 +++--- drivers/usb/otg/mv_otg.c | 6 +++--- drivers/usb/otg/nop-usb-xceiv.c | 4 ++-- drivers/usb/otg/otg.c | 32 ++++++++++++++++---------------- drivers/usb/otg/twl4030-usb.c | 2 +- drivers/usb/otg/twl6030-usb.c | 2 +- 10 files changed, 35 insertions(+), 35 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c index a84af677dc59..672e28c81437 100644 --- a/drivers/usb/otg/ab8500-usb.c +++ b/drivers/usb/otg/ab8500-usb.c @@ -529,7 +529,7 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev) if (err < 0) goto fail0; - err = usb_set_transceiver(&ab->phy); + err = usb_add_phy(&ab->phy); if (err) { dev_err(&pdev->dev, "Can't register transceiver\n"); goto fail1; @@ -556,7 +556,7 @@ static int __devexit ab8500_usb_remove(struct platform_device *pdev) cancel_work_sync(&ab->phy_dis_work); - usb_set_transceiver(NULL); + usb_add_phy(NULL); ab8500_usb_host_phy_dis(ab); ab8500_usb_peri_phy_dis(ab); diff --git a/drivers/usb/otg/fsl_otg.c b/drivers/usb/otg/fsl_otg.c index be4a63e8302f..73561edd81de 100644 --- a/drivers/usb/otg/fsl_otg.c +++ b/drivers/usb/otg/fsl_otg.c @@ -806,7 +806,7 @@ static int fsl_otg_conf(struct platform_device *pdev) fsl_otg_dev = fsl_otg_tc; /* Store the otg transceiver */ - status = usb_set_transceiver(&fsl_otg_tc->phy); + status = usb_add_phy(&fsl_otg_tc->phy); if (status) { pr_warn(FSL_OTG_NAME ": unable to register OTG transceiver.\n"); goto err; @@ -824,7 +824,7 @@ err: int usb_otg_start(struct platform_device *pdev) { struct fsl_otg *p_otg; - struct usb_phy *otg_trans = usb_get_transceiver(); + struct usb_phy *otg_trans = usb_get_phy(); struct otg_fsm *fsm; int status; struct resource *res; @@ -1134,7 +1134,7 @@ static int __devexit fsl_otg_remove(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - usb_set_transceiver(NULL); + usb_add_phy(NULL); free_irq(fsl_otg_dev->irq, fsl_otg_dev); iounmap((void *)usb_dr_regs); diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c index bde6298a9693..9b3c264cdb56 100644 --- a/drivers/usb/otg/gpio_vbus.c +++ b/drivers/usb/otg/gpio_vbus.c @@ -320,7 +320,7 @@ static int __init gpio_vbus_probe(struct platform_device *pdev) } /* only active when a gadget is registered */ - err = usb_set_transceiver(&gpio_vbus->phy); + err = usb_add_phy(&gpio_vbus->phy); if (err) { dev_err(&pdev->dev, "can't register transceiver, err: %d\n", err); @@ -354,7 +354,7 @@ static int __exit gpio_vbus_remove(struct platform_device *pdev) cancel_delayed_work_sync(&gpio_vbus->work); regulator_put(gpio_vbus->vbus_draw); - usb_set_transceiver(NULL); + usb_add_phy(NULL); free_irq(gpio_vbus->irq, pdev); if (gpio_is_valid(pdata->gpio_pullup)) diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c index 33cd709b084e..b74df3fec56f 100644 --- a/drivers/usb/otg/isp1301_omap.c +++ b/drivers/usb/otg/isp1301_omap.c @@ -1611,7 +1611,7 @@ isp1301_probe(struct i2c_client *i2c, const struct i2c_device_id *id) dev_dbg(&i2c->dev, "scheduled timer, %d min\n", TIMER_MINUTES); #endif - status = usb_set_transceiver(&isp->phy); + status = usb_add_phy(&isp->phy); if (status < 0) dev_err(&i2c->dev, "can't register transceiver, %d\n", status); @@ -1650,7 +1650,7 @@ subsys_initcall(isp_init); static void __exit isp_exit(void) { if (the_transceiver) - usb_set_transceiver(NULL); + usb_add_phy(NULL); i2c_del_driver(&isp1301_driver); } module_exit(isp_exit); diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c index 1d0347c247d1..dd606c010035 100644 --- a/drivers/usb/otg/msm_otg.c +++ b/drivers/usb/otg/msm_otg.c @@ -1555,9 +1555,9 @@ static int __init msm_otg_probe(struct platform_device *pdev) phy->otg->set_host = msm_otg_set_host; phy->otg->set_peripheral = msm_otg_set_peripheral; - ret = usb_set_transceiver(&motg->phy); + ret = usb_add_phy(&motg->phy); if (ret) { - dev_err(&pdev->dev, "usb_set_transceiver failed\n"); + dev_err(&pdev->dev, "usb_add_phy failed\n"); goto free_irq; } @@ -1624,7 +1624,7 @@ static int __devexit msm_otg_remove(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 0); pm_runtime_disable(&pdev->dev); - usb_set_transceiver(NULL); + usb_add_phy(NULL); free_irq(motg->irq, motg); /* diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c index 6cc6c3ffbb83..18e90fe1fbd1 100644 --- a/drivers/usb/otg/mv_otg.c +++ b/drivers/usb/otg/mv_otg.c @@ -690,7 +690,7 @@ int mv_otg_remove(struct platform_device *pdev) for (clk_i = 0; clk_i <= mvotg->clknum; clk_i++) clk_put(mvotg->clk[clk_i]); - usb_set_transceiver(NULL); + usb_add_phy(NULL); platform_set_drvdata(pdev, NULL); kfree(mvotg->phy.otg); @@ -853,7 +853,7 @@ static int mv_otg_probe(struct platform_device *pdev) goto err_disable_clk; } - retval = usb_set_transceiver(&mvotg->phy); + retval = usb_add_phy(&mvotg->phy); if (retval < 0) { dev_err(&pdev->dev, "can't register transceiver, %d\n", retval); @@ -880,7 +880,7 @@ static int mv_otg_probe(struct platform_device *pdev) return 0; err_set_transceiver: - usb_set_transceiver(NULL); + usb_add_phy(NULL); err_free_irq: free_irq(mvotg->irq, mvotg); err_disable_clk: diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c index 58b26df6afd1..33000dae7200 100644 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ b/drivers/usb/otg/nop-usb-xceiv.c @@ -117,7 +117,7 @@ static int __devinit nop_usb_xceiv_probe(struct platform_device *pdev) nop->phy.otg->set_host = nop_set_host; nop->phy.otg->set_peripheral = nop_set_peripheral; - err = usb_set_transceiver(&nop->phy); + err = usb_add_phy(&nop->phy); if (err) { dev_err(&pdev->dev, "can't register transceiver, err: %d\n", err); @@ -139,7 +139,7 @@ static int __devexit nop_usb_xceiv_remove(struct platform_device *pdev) { struct nop_usb_xceiv *nop = platform_get_drvdata(pdev); - usb_set_transceiver(NULL); + usb_add_phy(NULL); platform_set_drvdata(pdev, NULL); kfree(nop->phy.otg); diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 801e597a1541..300a995cfdbe 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -18,53 +18,53 @@ static struct usb_phy *phy; /** - * usb_get_transceiver - find the (single) USB transceiver + * usb_get_phy - find the (single) USB PHY * - * Returns the transceiver driver, after getting a refcount to it; or - * null if there is no such transceiver. The caller is responsible for - * calling usb_put_transceiver() to release that count. + * Returns the phy driver, after getting a refcount to it; or + * null if there is no such phy. The caller is responsible for + * calling usb_put_phy() to release that count. * * For use by USB host and peripheral drivers. */ -struct usb_phy *usb_get_transceiver(void) +struct usb_phy *usb_get_phy(void) { if (phy) get_device(phy->dev); return phy; } -EXPORT_SYMBOL(usb_get_transceiver); +EXPORT_SYMBOL(usb_get_phy); /** - * usb_put_transceiver - release the (single) USB transceiver - * @x: the transceiver returned by usb_get_transceiver() + * usb_put_phy - release the (single) USB PHY + * @x: the phy returned by usb_get_phy() * - * Releases a refcount the caller received from usb_get_transceiver(). + * Releases a refcount the caller received from usb_get_phy(). * * For use by USB host and peripheral drivers. */ -void usb_put_transceiver(struct usb_phy *x) +void usb_put_phy(struct usb_phy *x) { if (x) put_device(x->dev); } -EXPORT_SYMBOL(usb_put_transceiver); +EXPORT_SYMBOL(usb_put_phy); /** - * usb_set_transceiver - declare the (single) USB transceiver - * @x: the USB transceiver to be used; or NULL + * usb_add_phy - declare the (single) USB PHY + * @x: the USB phy to be used; or NULL * - * This call is exclusively for use by transceiver drivers, which + * This call is exclusively for use by phy drivers, which * coordinate the activities of drivers for host and peripheral * controllers, and in some cases for VBUS current regulation. */ -int usb_set_transceiver(struct usb_phy *x) +int usb_add_phy(struct usb_phy *x) { if (phy && x) return -EBUSY; phy = x; return 0; } -EXPORT_SYMBOL(usb_set_transceiver); +EXPORT_SYMBOL(usb_add_phy); const char *otg_state_string(enum usb_otg_state state) { diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index 02979306bf83..01022c891e26 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -633,7 +633,7 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) kfree(twl); return err; } - usb_set_transceiver(&twl->phy); + usb_add_phy(&twl->phy); platform_set_drvdata(pdev, twl); if (device_create_file(&pdev->dev, &dev_attr_vbus)) diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c index d2a9a8e691b9..a8be20878eb9 100644 --- a/drivers/usb/otg/twl6030-usb.c +++ b/drivers/usb/otg/twl6030-usb.c @@ -443,7 +443,7 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) kfree(twl); return err; } - usb_set_transceiver(&twl->phy); + usb_add_phy(&twl->phy); platform_set_drvdata(pdev, twl); if (device_create_file(&pdev->dev, &dev_attr_vbus)) -- cgit v1.2.2 From 662dca54ca67c92b7aa14b9a2ec54acacf33ce45 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 22 Jun 2012 17:02:46 +0530 Subject: usb: otg: support for multiple transceivers by a single controller Add a linked list for keeping multiple PHY instances with different types so that we can have separate USB2 and USB3 PHYs on one single board. _get_phy_ has been changed so that the controller gets the transceiver by type. _remove_phy_ has been added to let the phy be removed from the phy list. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/ab8500-usb.c | 4 +- drivers/usb/otg/fsl_otg.c | 6 +-- drivers/usb/otg/gpio_vbus.c | 4 +- drivers/usb/otg/isp1301_omap.c | 4 +- drivers/usb/otg/msm_otg.c | 4 +- drivers/usb/otg/mv_otg.c | 6 +-- drivers/usb/otg/nop-usb-xceiv.c | 4 +- drivers/usb/otg/otg.c | 96 +++++++++++++++++++++++++++++++++++------ drivers/usb/otg/twl4030-usb.c | 2 +- drivers/usb/otg/twl6030-usb.c | 2 +- 10 files changed, 102 insertions(+), 30 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c index 672e28c81437..ae8ad561f083 100644 --- a/drivers/usb/otg/ab8500-usb.c +++ b/drivers/usb/otg/ab8500-usb.c @@ -529,7 +529,7 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev) if (err < 0) goto fail0; - err = usb_add_phy(&ab->phy); + err = usb_add_phy(&ab->phy, USB_PHY_TYPE_USB2); if (err) { dev_err(&pdev->dev, "Can't register transceiver\n"); goto fail1; @@ -556,7 +556,7 @@ static int __devexit ab8500_usb_remove(struct platform_device *pdev) cancel_work_sync(&ab->phy_dis_work); - usb_add_phy(NULL); + usb_remove_phy(&ab->phy); ab8500_usb_host_phy_dis(ab); ab8500_usb_peri_phy_dis(ab); diff --git a/drivers/usb/otg/fsl_otg.c b/drivers/usb/otg/fsl_otg.c index 73561edd81de..23c798cb2d7f 100644 --- a/drivers/usb/otg/fsl_otg.c +++ b/drivers/usb/otg/fsl_otg.c @@ -806,7 +806,7 @@ static int fsl_otg_conf(struct platform_device *pdev) fsl_otg_dev = fsl_otg_tc; /* Store the otg transceiver */ - status = usb_add_phy(&fsl_otg_tc->phy); + status = usb_add_phy(&fsl_otg_tc->phy, USB_PHY_TYPE_USB2); if (status) { pr_warn(FSL_OTG_NAME ": unable to register OTG transceiver.\n"); goto err; @@ -824,7 +824,7 @@ err: int usb_otg_start(struct platform_device *pdev) { struct fsl_otg *p_otg; - struct usb_phy *otg_trans = usb_get_phy(); + struct usb_phy *otg_trans = usb_get_phy(USB_PHY_TYPE_USB2); struct otg_fsm *fsm; int status; struct resource *res; @@ -1134,7 +1134,7 @@ static int __devexit fsl_otg_remove(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - usb_add_phy(NULL); + usb_remove_phy(&fsl_otg_dev->phy); free_irq(fsl_otg_dev->irq, fsl_otg_dev); iounmap((void *)usb_dr_regs); diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c index 9b3c264cdb56..a67ffe22179a 100644 --- a/drivers/usb/otg/gpio_vbus.c +++ b/drivers/usb/otg/gpio_vbus.c @@ -320,7 +320,7 @@ static int __init gpio_vbus_probe(struct platform_device *pdev) } /* only active when a gadget is registered */ - err = usb_add_phy(&gpio_vbus->phy); + err = usb_add_phy(&gpio_vbus->phy, USB_PHY_TYPE_USB2); if (err) { dev_err(&pdev->dev, "can't register transceiver, err: %d\n", err); @@ -354,7 +354,7 @@ static int __exit gpio_vbus_remove(struct platform_device *pdev) cancel_delayed_work_sync(&gpio_vbus->work); regulator_put(gpio_vbus->vbus_draw); - usb_add_phy(NULL); + usb_remove_phy(&gpio_vbus->phy); free_irq(gpio_vbus->irq, pdev); if (gpio_is_valid(pdata->gpio_pullup)) diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c index b74df3fec56f..75cea4ab0985 100644 --- a/drivers/usb/otg/isp1301_omap.c +++ b/drivers/usb/otg/isp1301_omap.c @@ -1611,7 +1611,7 @@ isp1301_probe(struct i2c_client *i2c, const struct i2c_device_id *id) dev_dbg(&i2c->dev, "scheduled timer, %d min\n", TIMER_MINUTES); #endif - status = usb_add_phy(&isp->phy); + status = usb_add_phy(&isp->phy, USB_PHY_TYPE_USB2); if (status < 0) dev_err(&i2c->dev, "can't register transceiver, %d\n", status); @@ -1650,7 +1650,7 @@ subsys_initcall(isp_init); static void __exit isp_exit(void) { if (the_transceiver) - usb_add_phy(NULL); + usb_remove_phy(&the_transceiver->phy); i2c_del_driver(&isp1301_driver); } module_exit(isp_exit); diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c index dd606c010035..9f5fc906041a 100644 --- a/drivers/usb/otg/msm_otg.c +++ b/drivers/usb/otg/msm_otg.c @@ -1555,7 +1555,7 @@ static int __init msm_otg_probe(struct platform_device *pdev) phy->otg->set_host = msm_otg_set_host; phy->otg->set_peripheral = msm_otg_set_peripheral; - ret = usb_add_phy(&motg->phy); + ret = usb_add_phy(&motg->phy, USB_PHY_TYPE_USB2); if (ret) { dev_err(&pdev->dev, "usb_add_phy failed\n"); goto free_irq; @@ -1624,7 +1624,7 @@ static int __devexit msm_otg_remove(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 0); pm_runtime_disable(&pdev->dev); - usb_add_phy(NULL); + usb_remove_phy(phy); free_irq(motg->irq, motg); /* diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c index 18e90fe1fbd1..3f124e8f5792 100644 --- a/drivers/usb/otg/mv_otg.c +++ b/drivers/usb/otg/mv_otg.c @@ -690,7 +690,7 @@ int mv_otg_remove(struct platform_device *pdev) for (clk_i = 0; clk_i <= mvotg->clknum; clk_i++) clk_put(mvotg->clk[clk_i]); - usb_add_phy(NULL); + usb_remove_phy(&mvotg->phy); platform_set_drvdata(pdev, NULL); kfree(mvotg->phy.otg); @@ -853,7 +853,7 @@ static int mv_otg_probe(struct platform_device *pdev) goto err_disable_clk; } - retval = usb_add_phy(&mvotg->phy); + retval = usb_add_phy(&mvotg->phy, USB_PHY_TYPE_USB2); if (retval < 0) { dev_err(&pdev->dev, "can't register transceiver, %d\n", retval); @@ -880,7 +880,7 @@ static int mv_otg_probe(struct platform_device *pdev) return 0; err_set_transceiver: - usb_add_phy(NULL); + usb_remove_phy(&mvotg->phy); err_free_irq: free_irq(mvotg->irq, mvotg); err_disable_clk: diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c index 33000dae7200..803f958f4133 100644 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ b/drivers/usb/otg/nop-usb-xceiv.c @@ -117,7 +117,7 @@ static int __devinit nop_usb_xceiv_probe(struct platform_device *pdev) nop->phy.otg->set_host = nop_set_host; nop->phy.otg->set_peripheral = nop_set_peripheral; - err = usb_add_phy(&nop->phy); + err = usb_add_phy(&nop->phy, USB_PHY_TYPE_USB2); if (err) { dev_err(&pdev->dev, "can't register transceiver, err: %d\n", err); @@ -139,7 +139,7 @@ static int __devexit nop_usb_xceiv_remove(struct platform_device *pdev) { struct nop_usb_xceiv *nop = platform_get_drvdata(pdev); - usb_add_phy(NULL); + usb_remove_phy(&nop->phy); platform_set_drvdata(pdev, NULL); kfree(nop->phy.otg); diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 300a995cfdbe..a23065820ead 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -11,14 +11,32 @@ #include #include +#include #include #include -static struct usb_phy *phy; +static LIST_HEAD(phy_list); +static DEFINE_SPINLOCK(phy_lock); + +static struct usb_phy *__usb_find_phy(struct list_head *list, + enum usb_phy_type type) +{ + struct usb_phy *phy = NULL; + + list_for_each_entry(phy, list, head) { + if (phy->type != type) + continue; + + return phy; + } + + return ERR_PTR(-ENODEV); +} /** - * usb_get_phy - find the (single) USB PHY + * usb_get_phy - find the USB PHY + * @type - the type of the phy the controller requires * * Returns the phy driver, after getting a refcount to it; or * null if there is no such phy. The caller is responsible for @@ -26,16 +44,30 @@ static struct usb_phy *phy; * * For use by USB host and peripheral drivers. */ -struct usb_phy *usb_get_phy(void) +struct usb_phy *usb_get_phy(enum usb_phy_type type) { - if (phy) - get_device(phy->dev); + struct usb_phy *phy = NULL; + unsigned long flags; + + spin_lock_irqsave(&phy_lock, flags); + + phy = __usb_find_phy(&phy_list, type); + if (IS_ERR(phy)) { + pr_err("unable to find transceiver of type %s\n", + usb_phy_type_string(type)); + return phy; + } + + get_device(phy->dev); + + spin_unlock_irqrestore(&phy_lock, flags); + return phy; } EXPORT_SYMBOL(usb_get_phy); /** - * usb_put_phy - release the (single) USB PHY + * usb_put_phy - release the USB PHY * @x: the phy returned by usb_get_phy() * * Releases a refcount the caller received from usb_get_phy(). @@ -50,22 +82,62 @@ void usb_put_phy(struct usb_phy *x) EXPORT_SYMBOL(usb_put_phy); /** - * usb_add_phy - declare the (single) USB PHY + * usb_add_phy - declare the USB PHY * @x: the USB phy to be used; or NULL + * @type - the type of this PHY * * This call is exclusively for use by phy drivers, which * coordinate the activities of drivers for host and peripheral * controllers, and in some cases for VBUS current regulation. */ -int usb_add_phy(struct usb_phy *x) +int usb_add_phy(struct usb_phy *x, enum usb_phy_type type) { - if (phy && x) - return -EBUSY; - phy = x; - return 0; + int ret = 0; + unsigned long flags; + struct usb_phy *phy; + + if (x && x->type != USB_PHY_TYPE_UNDEFINED) { + dev_err(x->dev, "not accepting initialized PHY %s\n", x->label); + return -EINVAL; + } + + spin_lock_irqsave(&phy_lock, flags); + + list_for_each_entry(phy, &phy_list, head) { + if (phy->type == type) { + ret = -EBUSY; + dev_err(x->dev, "transceiver type %s already exists\n", + usb_phy_type_string(type)); + goto out; + } + } + + x->type = type; + list_add_tail(&x->head, &phy_list); + +out: + spin_unlock_irqrestore(&phy_lock, flags); + return ret; } EXPORT_SYMBOL(usb_add_phy); +/** + * usb_remove_phy - remove the OTG PHY + * @x: the USB OTG PHY to be removed; + * + * This reverts the effects of usb_add_phy + */ +void usb_remove_phy(struct usb_phy *x) +{ + unsigned long flags; + + spin_lock_irqsave(&phy_lock, flags); + if (x) + list_del(&x->head); + spin_unlock_irqrestore(&phy_lock, flags); +} +EXPORT_SYMBOL(usb_remove_phy); + const char *otg_state_string(enum usb_otg_state state) { switch (state) { diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index 01022c891e26..25a09fabbe35 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -633,7 +633,7 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) kfree(twl); return err; } - usb_add_phy(&twl->phy); + usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); platform_set_drvdata(pdev, twl); if (device_create_file(&pdev->dev, &dev_attr_vbus)) diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c index a8be20878eb9..dbee00aea755 100644 --- a/drivers/usb/otg/twl6030-usb.c +++ b/drivers/usb/otg/twl6030-usb.c @@ -443,7 +443,7 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) kfree(twl); return err; } - usb_add_phy(&twl->phy); + usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); platform_set_drvdata(pdev, twl); if (device_create_file(&pdev->dev, &dev_attr_vbus)) -- cgit v1.2.2 From 410219dcd2ba8d8b4bcfa9c232f35bf505bc021a Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 22 Jun 2012 17:02:47 +0530 Subject: usb: otg: utils: devres: Add API's to associate a device with the phy Used devres API's to associate the phy with a device so that on driver detach, release function is invoked on the devres data(usb_phy) and devres data(usb_phy) is released. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/otg.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index a23065820ead..0fa4d8c1b1e8 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -13,6 +13,7 @@ #include #include #include +#include #include @@ -34,6 +35,48 @@ static struct usb_phy *__usb_find_phy(struct list_head *list, return ERR_PTR(-ENODEV); } +static void devm_usb_phy_release(struct device *dev, void *res) +{ + struct usb_phy *phy = *(struct usb_phy **)res; + + usb_put_phy(phy); +} + +static int devm_usb_phy_match(struct device *dev, void *res, void *match_data) +{ + return res == match_data; +} + +/** + * devm_usb_get_phy - find the USB PHY + * @dev - device that requests this phy + * @type - the type of the phy the controller requires + * + * Gets the phy using usb_get_phy(), and associates a device with it using + * devres. On driver detach, release function is invoked on the devres data, + * then, devres data is freed. + * + * For use by USB host and peripheral drivers. + */ +struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type) +{ + struct usb_phy **ptr, *phy; + + ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return NULL; + + phy = usb_get_phy(type); + if (phy) { + *ptr = phy; + devres_add(dev, ptr); + } else + devres_free(ptr); + + return phy; +} +EXPORT_SYMBOL(devm_usb_get_phy); + /** * usb_get_phy - find the USB PHY * @type - the type of the phy the controller requires @@ -66,6 +109,25 @@ struct usb_phy *usb_get_phy(enum usb_phy_type type) } EXPORT_SYMBOL(usb_get_phy); +/** + * devm_usb_put_phy - release the USB PHY + * @dev - device that wants to release this phy + * @phy - the phy returned by devm_usb_get_phy() + * + * destroys the devres associated with this phy and invokes usb_put_phy + * to release the phy. + * + * For use by USB host and peripheral drivers. + */ +void devm_usb_put_phy(struct device *dev, struct usb_phy *phy) +{ + int r; + + r = devres_destroy(dev, devm_usb_phy_release, devm_usb_phy_match, phy); + dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n"); +} +EXPORT_SYMBOL(devm_usb_put_phy); + /** * usb_put_phy - release the USB PHY * @x: the phy returned by usb_get_phy() -- cgit v1.2.2 From c9721438c009adf8e81d376839ed037c53b9b8d9 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 22 Jun 2012 17:40:52 +0530 Subject: usb: musb: twl: use mailbox API to send VBUS or ID events The atomic notifier from twl4030/twl6030 to notifiy VBUS and ID events, is replaced by a direct call to omap musb blue. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/twl4030-usb.c | 46 +++++++++++++++++++++--------------------- drivers/usb/otg/twl6030-usb.c | 47 +++++++++++++++++++------------------------ 2 files changed, 44 insertions(+), 49 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index 25a09fabbe35..a7b809e217ea 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -33,11 +33,11 @@ #include #include #include +#include #include #include #include #include -#include #include /* Register defines */ @@ -159,7 +159,7 @@ struct twl4030_usb { enum twl4030_usb_mode usb_mode; int irq; - u8 linkstat; + enum omap_musb_vbus_id_status linkstat; bool vbus_supplied; u8 asleep; bool irq_enabled; @@ -246,10 +246,11 @@ twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits) /*-------------------------------------------------------------------------*/ -static enum usb_phy_events twl4030_usb_linkstat(struct twl4030_usb *twl) +static enum omap_musb_vbus_id_status + twl4030_usb_linkstat(struct twl4030_usb *twl) { int status; - int linkstat = USB_EVENT_NONE; + enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN; struct usb_otg *otg = twl->phy.otg; twl->vbus_supplied = false; @@ -273,24 +274,24 @@ static enum usb_phy_events twl4030_usb_linkstat(struct twl4030_usb *twl) twl->vbus_supplied = true; if (status & BIT(2)) - linkstat = USB_EVENT_ID; + linkstat = OMAP_MUSB_ID_GROUND; else - linkstat = USB_EVENT_VBUS; - } else - linkstat = USB_EVENT_NONE; + linkstat = OMAP_MUSB_VBUS_VALID; + } else { + if (twl->linkstat != OMAP_MUSB_UNKNOWN) + linkstat = OMAP_MUSB_VBUS_OFF; + } dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n", status, status, linkstat); - twl->phy.last_event = linkstat; - /* REVISIT this assumes host and peripheral controllers * are registered, and that both are active... */ spin_lock_irq(&twl->lock); twl->linkstat = linkstat; - if (linkstat == USB_EVENT_ID) { + if (linkstat == OMAP_MUSB_ID_GROUND) { otg->default_a = true; twl->phy.state = OTG_STATE_A_IDLE; } else { @@ -501,10 +502,10 @@ static DEVICE_ATTR(vbus, 0444, twl4030_usb_vbus_show, NULL); static irqreturn_t twl4030_usb_irq(int irq, void *_twl) { struct twl4030_usb *twl = _twl; - int status; + enum omap_musb_vbus_id_status status; status = twl4030_usb_linkstat(twl); - if (status >= 0) { + if (status > 0) { /* FIXME add a set_power() method so that B-devices can * configure the charger appropriately. It's not always * correct to consume VBUS power, and how much current to @@ -516,13 +517,13 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl) * USB_LINK_VBUS state. musb_hdrc won't care until it * starts to handle softconnect right. */ - if (status == USB_EVENT_NONE) + if (status == OMAP_MUSB_VBUS_OFF || + status == OMAP_MUSB_ID_FLOAT) twl4030_phy_suspend(twl, 0); else twl4030_phy_resume(twl); - atomic_notifier_call_chain(&twl->phy.notifier, status, - twl->phy.otg->gadget); + omap_musb_mailbox(twl->linkstat); } sysfs_notify(&twl->dev->kobj, NULL, "vbus"); @@ -531,11 +532,12 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl) static void twl4030_usb_phy_init(struct twl4030_usb *twl) { - int status; + enum omap_musb_vbus_id_status status; status = twl4030_usb_linkstat(twl); - if (status >= 0) { - if (status == USB_EVENT_NONE) { + if (status > 0) { + if (status == OMAP_MUSB_VBUS_OFF || + status == OMAP_MUSB_ID_FLOAT) { __twl4030_phy_power(twl, 0); twl->asleep = 1; } else { @@ -543,8 +545,7 @@ static void twl4030_usb_phy_init(struct twl4030_usb *twl) twl->asleep = 0; } - atomic_notifier_call_chain(&twl->phy.notifier, status, - twl->phy.otg->gadget); + omap_musb_mailbox(twl->linkstat); } sysfs_notify(&twl->dev->kobj, NULL, "vbus"); } @@ -613,6 +614,7 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) twl->usb_mode = pdata->usb_mode; twl->vbus_supplied = false; twl->asleep = 1; + twl->linkstat = OMAP_MUSB_UNKNOWN; twl->phy.dev = twl->dev; twl->phy.label = "twl4030"; @@ -639,8 +641,6 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) if (device_create_file(&pdev->dev, &dev_attr_vbus)) dev_warn(&pdev->dev, "could not create sysfs file\n"); - ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier); - /* Our job is to use irqs and status from the power module * to keep the transceiver disabled when nothing's connected. * diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c index dbee00aea755..6c758836cfb1 100644 --- a/drivers/usb/otg/twl6030-usb.c +++ b/drivers/usb/otg/twl6030-usb.c @@ -26,10 +26,10 @@ #include #include #include +#include #include #include #include -#include #include #include @@ -100,7 +100,7 @@ struct twl6030_usb { int irq1; int irq2; - u8 linkstat; + enum omap_musb_vbus_id_status linkstat; u8 asleep; bool irq_enabled; bool vbus_enable; @@ -147,7 +147,7 @@ static int twl6030_phy_init(struct usb_phy *x) dev = twl->dev; pdata = dev->platform_data; - if (twl->linkstat == USB_EVENT_ID) + if (twl->linkstat == OMAP_MUSB_ID_GROUND) pdata->phy_power(twl->dev, 1, 1); else pdata->phy_power(twl->dev, 0, 1); @@ -235,13 +235,13 @@ static ssize_t twl6030_usb_vbus_show(struct device *dev, spin_lock_irqsave(&twl->lock, flags); switch (twl->linkstat) { - case USB_EVENT_VBUS: + case OMAP_MUSB_VBUS_VALID: ret = snprintf(buf, PAGE_SIZE, "vbus\n"); break; - case USB_EVENT_ID: + case OMAP_MUSB_ID_GROUND: ret = snprintf(buf, PAGE_SIZE, "id\n"); break; - case USB_EVENT_NONE: + case OMAP_MUSB_VBUS_OFF: ret = snprintf(buf, PAGE_SIZE, "none\n"); break; default: @@ -257,7 +257,7 @@ static irqreturn_t twl6030_usb_irq(int irq, void *_twl) { struct twl6030_usb *twl = _twl; struct usb_otg *otg = twl->phy.otg; - int status; + enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; u8 vbus_state, hw_state; hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); @@ -268,22 +268,20 @@ static irqreturn_t twl6030_usb_irq(int irq, void *_twl) if (vbus_state & VBUS_DET) { regulator_enable(twl->usb3v3); twl->asleep = 1; - status = USB_EVENT_VBUS; + status = OMAP_MUSB_VBUS_VALID; otg->default_a = false; twl->phy.state = OTG_STATE_B_IDLE; twl->linkstat = status; - twl->phy.last_event = status; - atomic_notifier_call_chain(&twl->phy.notifier, - status, otg->gadget); + omap_musb_mailbox(status); } else { - status = USB_EVENT_NONE; - twl->linkstat = status; - twl->phy.last_event = status; - atomic_notifier_call_chain(&twl->phy.notifier, - status, otg->gadget); - if (twl->asleep) { - regulator_disable(twl->usb3v3); - twl->asleep = 0; + if (twl->linkstat != OMAP_MUSB_UNKNOWN) { + status = OMAP_MUSB_VBUS_OFF; + twl->linkstat = status; + omap_musb_mailbox(status); + if (twl->asleep) { + regulator_disable(twl->usb3v3); + twl->asleep = 0; + } } } } @@ -296,7 +294,7 @@ static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) { struct twl6030_usb *twl = _twl; struct usb_otg *otg = twl->phy.otg; - int status = USB_EVENT_NONE; + enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; u8 hw_state; hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); @@ -308,13 +306,11 @@ static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR, 0x1); twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, 0x10); - status = USB_EVENT_ID; + status = OMAP_MUSB_ID_GROUND; otg->default_a = true; twl->phy.state = OTG_STATE_A_IDLE; twl->linkstat = status; - twl->phy.last_event = status; - atomic_notifier_call_chain(&twl->phy.notifier, status, - otg->gadget); + omap_musb_mailbox(status); } else { twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_CLR, 0x10); @@ -419,6 +415,7 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) twl->irq1 = platform_get_irq(pdev, 0); twl->irq2 = platform_get_irq(pdev, 1); twl->features = pdata->features; + twl->linkstat = OMAP_MUSB_UNKNOWN; twl->phy.dev = twl->dev; twl->phy.label = "twl6030"; @@ -449,8 +446,6 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) if (device_create_file(&pdev->dev, &dev_attr_vbus)) dev_warn(&pdev->dev, "could not create sysfs file\n"); - ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier); - INIT_WORK(&twl->set_vbus_work, otg_set_vbus_work); twl->irq_enabled = true; -- cgit v1.2.2 From c83a8542b5e3c5b30825955a68b1cc8bd24b122a Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 22 Jun 2012 17:40:53 +0530 Subject: usb: musb: move otg specific initializations from twl to glue Moved otg specific state(OTG_STATE_B_IDLE, OTG_STATE_A_IDLE) initializations from twl to glue. These initializations are removed from twl4030 and twl6030 and moved to the mailbox API defined in glue. This is part of the cleanup in preparation to make use of usb2 phy driver. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/twl4030-usb.c | 8 -------- drivers/usb/otg/twl6030-usb.c | 6 ------ 2 files changed, 14 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index a7b809e217ea..4d0d98bc40cd 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -251,7 +251,6 @@ static enum omap_musb_vbus_id_status { int status; enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN; - struct usb_otg *otg = twl->phy.otg; twl->vbus_supplied = false; @@ -291,13 +290,6 @@ static enum omap_musb_vbus_id_status spin_lock_irq(&twl->lock); twl->linkstat = linkstat; - if (linkstat == OMAP_MUSB_ID_GROUND) { - otg->default_a = true; - twl->phy.state = OTG_STATE_A_IDLE; - } else { - otg->default_a = false; - twl->phy.state = OTG_STATE_B_IDLE; - } spin_unlock_irq(&twl->lock); return linkstat; diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c index 6c758836cfb1..66cfea735557 100644 --- a/drivers/usb/otg/twl6030-usb.c +++ b/drivers/usb/otg/twl6030-usb.c @@ -256,7 +256,6 @@ static DEVICE_ATTR(vbus, 0444, twl6030_usb_vbus_show, NULL); static irqreturn_t twl6030_usb_irq(int irq, void *_twl) { struct twl6030_usb *twl = _twl; - struct usb_otg *otg = twl->phy.otg; enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; u8 vbus_state, hw_state; @@ -269,8 +268,6 @@ static irqreturn_t twl6030_usb_irq(int irq, void *_twl) regulator_enable(twl->usb3v3); twl->asleep = 1; status = OMAP_MUSB_VBUS_VALID; - otg->default_a = false; - twl->phy.state = OTG_STATE_B_IDLE; twl->linkstat = status; omap_musb_mailbox(status); } else { @@ -293,7 +290,6 @@ static irqreturn_t twl6030_usb_irq(int irq, void *_twl) static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) { struct twl6030_usb *twl = _twl; - struct usb_otg *otg = twl->phy.otg; enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; u8 hw_state; @@ -307,8 +303,6 @@ static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) twl6030_writeb(twl, TWL_MODULE_USB, USB_ID_INT_EN_HI_SET, 0x10); status = OMAP_MUSB_ID_GROUND; - otg->default_a = true; - twl->phy.state = OTG_STATE_A_IDLE; twl->linkstat = status; omap_musb_mailbox(status); } else { -- cgit v1.2.2 From b8a3efa3a363720687d21228d6b23b988a223bbb Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 22 Jun 2012 17:40:55 +0530 Subject: usb: otg: twl: use devres API to allocate resources used devres API while allocating memory resource in twl4030 and twl6030 so that these resources are released automatically on driver detach. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/twl4030-usb.c | 15 +++------------ drivers/usb/otg/twl6030-usb.c | 16 +++------------- 2 files changed, 6 insertions(+), 25 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index 4d0d98bc40cd..523cad5bfea9 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -591,15 +591,13 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) return -EINVAL; } - twl = kzalloc(sizeof *twl, GFP_KERNEL); + twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL); if (!twl) return -ENOMEM; - otg = kzalloc(sizeof *otg, GFP_KERNEL); - if (!otg) { - kfree(twl); + otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL); + if (!otg) return -ENOMEM; - } twl->dev = &pdev->dev; twl->irq = platform_get_irq(pdev, 0); @@ -623,8 +621,6 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) err = twl4030_usb_ldo_init(twl); if (err) { dev_err(&pdev->dev, "ldo init failed\n"); - kfree(otg); - kfree(twl); return err; } usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); @@ -648,8 +644,6 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) if (status < 0) { dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n", twl->irq, status); - kfree(otg); - kfree(twl); return status; } @@ -693,9 +687,6 @@ static int __exit twl4030_usb_remove(struct platform_device *pdev) regulator_put(twl->usb1v8); regulator_put(twl->usb3v1); - kfree(twl->phy.otg); - kfree(twl); - return 0; } diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c index 66cfea735557..600c27a42ff1 100644 --- a/drivers/usb/otg/twl6030-usb.c +++ b/drivers/usb/otg/twl6030-usb.c @@ -395,15 +395,13 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; pdata = dev->platform_data; - twl = kzalloc(sizeof *twl, GFP_KERNEL); + twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL); if (!twl) return -ENOMEM; - otg = kzalloc(sizeof *otg, GFP_KERNEL); - if (!otg) { - kfree(twl); + otg = devm_kzalloc(dev, sizeof *otg, GFP_KERNEL); + if (!otg) return -ENOMEM; - } twl->dev = &pdev->dev; twl->irq1 = platform_get_irq(pdev, 0); @@ -430,8 +428,6 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) err = twl6030_usb_ldo_init(twl); if (err) { dev_err(&pdev->dev, "ldo init failed\n"); - kfree(otg); - kfree(twl); return err; } usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); @@ -450,8 +446,6 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", twl->irq1, status); device_remove_file(twl->dev, &dev_attr_vbus); - kfree(otg); - kfree(twl); return status; } @@ -463,8 +457,6 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) twl->irq2, status); free_irq(twl->irq1, twl); device_remove_file(twl->dev, &dev_attr_vbus); - kfree(otg); - kfree(twl); return status; } @@ -495,8 +487,6 @@ static int __exit twl6030_usb_remove(struct platform_device *pdev) pdata->phy_exit(twl->dev); device_remove_file(twl->dev, &dev_attr_vbus); cancel_work_sync(&twl->set_vbus_work); - kfree(twl->phy.otg); - kfree(twl); return 0; } -- cgit v1.2.2 From ded017ee6c7b90f7356bd8488f8af1c10ba90490 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Tue, 26 Jun 2012 17:40:32 +0530 Subject: usb: phy: fix return value check of usb_get_phy usb_get_phy will return -ENODEV if it's not able to find the phy. Hence fixed all the callers of usb_get_phy to check for this error condition instead of relying on a non-zero value as success condition. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/otg.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 0fa4d8c1b1e8..88d62b16f632 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -67,7 +67,7 @@ struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type) return NULL; phy = usb_get_phy(type); - if (phy) { + if (!IS_ERR(phy)) { *ptr = phy; devres_add(dev, ptr); } else @@ -82,7 +82,7 @@ EXPORT_SYMBOL(devm_usb_get_phy); * @type - the type of the phy the controller requires * * Returns the phy driver, after getting a refcount to it; or - * null if there is no such phy. The caller is responsible for + * -ENODEV if there is no such phy. The caller is responsible for * calling usb_put_phy() to release that count. * * For use by USB host and peripheral drivers. -- cgit v1.2.2 From f8ecf829481b2cc7301a811da9d2df53ef174977 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Mon, 2 Jul 2012 12:20:24 +0530 Subject: usb: phy: fix error handling in usb_get_phy spin_unlock_irqrestore() was not being called in the error path of usb_get_phy. It's fixed here. Reported-by: Marc Kleine-Budde Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/otg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb/otg') diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 88d62b16f632..1bf60a22595c 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -98,11 +98,12 @@ struct usb_phy *usb_get_phy(enum usb_phy_type type) if (IS_ERR(phy)) { pr_err("unable to find transceiver of type %s\n", usb_phy_type_string(type)); - return phy; + goto err0; } get_device(phy->dev); +err0: spin_unlock_irqrestore(&phy_lock, flags); return phy; -- cgit v1.2.2