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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?eqbISiizdYG6S+cAJbSM7oEMvM93C4tIKtZfxhKUOc1C0t4xP2w3sdYCns/0?= =?us-ascii?Q?ze+OKpu28AFG6tlj615Uc1VkSl8a4J2xoFjkEliFhloV5thnZz5WasmPhHUD?= =?us-ascii?Q?am8cV2X93FFhhjtKwXQcvCM99NQhKCJt26FxmxQpuY1fqfckXTtJD682ApH4?= =?us-ascii?Q?MyusBKFaXB9RgN6UNJZe/OdLXPegd6lmL3Qc7EjKkhyctbkaTgng9zUZ3U/C?= =?us-ascii?Q?MddXuPJhhcFZ9ozO/2YoQtJOgQIIxWEH6ABaMdPvdZ1YAl5o9tpSHrX4CaOJ?= =?us-ascii?Q?7czjLeIXQX4z17AfskW5iDQa4NRMUCZjPU0ucbzpmuQeynolbDltN1koA1Wz?= =?us-ascii?Q?5oUHiQyQdalIfp11/FptXNY3Dbuly47rAWz+DTvSNkdAUTUfFNVCfcaIekoK?= =?us-ascii?Q?uGL9bSLny2TzzJfLJT48+nbaJDZ5oflghNQZppPkP8QNleApsOd8aqQeumzZ?= =?us-ascii?Q?/OD/y8RoqjyJ38K5TWj4vEqSIP8vrkf0m+kAKnB7cQxh7ICSk2T1Bd5ZKMcd?= =?us-ascii?Q?lEK9pDD9kayf8ZqnQ/lR0OKC3UKaJMenobHY/UOpRjShNG1LM8Yv4hgtNTKi?= =?us-ascii?Q?qYAimlHBKetwVMOT6eOe1LLKHhrH8i8DCb9FR9NtzO4jO+uOBjvW56A7QiAW?= =?us-ascii?Q?WPMw4xgVPfB1D2Q9x7kEnLmgT1vCIyj5gezB7RYipvaLgJ3EA/ja5bYaxaSL?= =?us-ascii?Q?MVYbqOLu7x/6/Q1iFAFxPuDjGrIeKXzIs/hl9JVcIygHl7aP76Xqv8lnILAI?= =?us-ascii?Q?1EVjm2QCLa5+S7K40pDnlaLHnSgTkTCTI7ibxmjz+zbZCHA/eJKlpJEhQ8ro?= =?us-ascii?Q?3feY3UtIjoUbvcT+Yp+evJE2jxyy6fABaBNehJCvmxcts5e9pDLzwU3WZFOI?= =?us-ascii?Q?e0bQ2C2zTxpR+JbnyCQfy16DPSkmDsMmzIQUxj9tEg/ozId4UUb1/PmpV0C1?= =?us-ascii?Q?1x0SnRGFCOuqb9xfPmX7/n1I6somDR/2YVb8IccMvWA+MgeTodvfXm8u8kMl?= =?us-ascii?Q?2wh/wbnuqMwp8ndQXd94UcR/cxzb9ukbeUawAFTwoZ33wQfxAwuitAWwbRNC?= =?us-ascii?Q?3Llr8JjuONMjQYmmYxaVrtRIE5ZWX8tgepiTAfxIOQE2Zw14PimRVyo3rzMy?= =?us-ascii?Q?zl+f3cBoDGkOkn7q+BuJsfnBsRyCMydcDaWc1yROR2xKAJa4AbZOlRodIzlS?= =?us-ascii?Q?MRC0OrAI9WwHdcX6HqQ9wNpRKBf2fM9xZrwYQZ5UE0Wk4m53wPgE5tadYyn/?= =?us-ascii?Q?mRe54NC59Zbj6ps4h52cdlAVnlxt7GU7ebvbKvxj1g8kXZna1LOvpSuaZfDx?= =?us-ascii?Q?GdpZ9KBXc3p4YCuIef0vuvsf2e/YxJREFOMaUYJT096q6HYSOLKKOD/oZSsk?= =?us-ascii?Q?WY1l8VaFy7w3glOefGLcIlEtUq6Yupb8Cgbepj61mCto/6YuchgNT+fAfsRR?= =?us-ascii?Q?930QyHh1tivpbyGeHyzkR9cC3RNrn1Dcn8y8sDw0YHZvCXyfrB+hKmKh5hED?= =?us-ascii?Q?3gvSRfTRdnYuhZFmNuDPl5aBsYLrlSBouj67c22l7ft42xjD4GR9eaVMHEfe?= =?us-ascii?Q?RJLt5crrCl2RqcnpcpIzaLVGWkY7yGK2wulx6lpvsJ4CIJZw45GzwWWQnJwY?= =?us-ascii?Q?MVq34Ak78WJu4rGi545a9J4=3D?= X-OriginatorOrg: seco.com X-MS-Exchange-CrossTenant-Network-Message-Id: 65400021-1f2b-41f1-269e-08d9d780b084 X-MS-Exchange-CrossTenant-AuthSource: AM0PR03MB4514.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Jan 2022 17:09:56.7965 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: bebe97c3-6438-442e-ade3-ff17aa50e733 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: sWq69Gi/mHHHunG5nvGtgXAe8Fvs6jWH4qmAOyx7iTR0/sAD8UriskNBnaug5ECRhsvAJrOC9EMrn2U9B2vNMA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR03MB7742 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some USB controller drivers call otg_set_vbus when entering host or device mode. Implement this callback so that VBUS can be turned on and off automatically. This is especially useful when there is no property for a VBUS supply in the controller's binding. This results in a change in semantics of the vbus_draw regulator. Whereas before it represented the VBUS supplied by an A-Device when we acted as a B-Device, now it represents an internal VBUS source. Accordingly, we no longer set the current limit or enable/disable the bus from nop_gpio_vbus_thread. Because this supply was never initialized before the previous commit, there should be no change in behavior. Signed-off-by: Sean Anderson --- drivers/usb/phy/phy-generic.c | 45 +++++++++++++---------------------- 1 file changed, 17 insertions(+), 28 deletions(-) diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index 34b9f8140187..2c2553bc9b54 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -68,33 +68,26 @@ static void nop_reset(struct usb_phy_generic *nop) } /* interface to regulator framework */ -static void nop_set_vbus_draw(struct usb_phy_generic *nop, unsigned mA) +static int nop_set_vbus(struct usb_otg *otg, bool enable) { - struct regulator *vbus_draw = nop->vbus_draw; - int enabled; - int ret; + int ret = 0; + struct usb_phy_generic *nop = dev_get_drvdata(otg->usb_phy->dev); - if (!vbus_draw) - return; + if (!nop->vbus_draw) + return 0; - enabled = nop->vbus_draw_enabled; - if (mA) { - regulator_set_current_limit(vbus_draw, 0, 1000 * mA); - if (!enabled) { - ret = regulator_enable(vbus_draw); - if (ret < 0) - return; - nop->vbus_draw_enabled = 1; - } - } else { - if (enabled) { - ret = regulator_disable(vbus_draw); - if (ret < 0) - return; - nop->vbus_draw_enabled = 0; - } + if (enable && !nop->vbus_draw_enabled) { + ret = regulator_enable(nop->vbus_draw); + if (ret) + nop->vbus_draw_enabled = false; + else + nop->vbus_draw_enabled = true; + + } else if (!enable && nop->vbus_draw_enabled) { + ret = regulator_disable(nop->vbus_draw); + nop->vbus_draw_enabled = false; } - nop->mA = mA; + return ret; } @@ -114,14 +107,9 @@ static irqreturn_t nop_gpio_vbus_thread(int irq, void *data) otg->state = OTG_STATE_B_PERIPHERAL; nop->phy.last_event = status; - /* drawing a "unit load" is *always* OK, except for OTG */ - nop_set_vbus_draw(nop, 100); - atomic_notifier_call_chain(&nop->phy.notifier, status, otg->gadget); } else { - nop_set_vbus_draw(nop, 0); - status = USB_EVENT_NONE; otg->state = OTG_STATE_B_IDLE; nop->phy.last_event = status; @@ -285,6 +273,7 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop) nop->phy.otg->usb_phy = &nop->phy; nop->phy.otg->set_host = nop_set_host; nop->phy.otg->set_peripheral = nop_set_peripheral; + nop->phy.otg->set_vbus = nop_set_vbus; return 0; } -- 2.25.1