From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933443AbaCRU5l (ORCPT ); Tue, 18 Mar 2014 16:57:41 -0400 Received: from mga09.intel.com ([134.134.136.24]:13521 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932132AbaCRUxh (ORCPT ); Tue, 18 Mar 2014 16:53:37 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,680,1389772800"; d="scan'208";a="475172360" From: Tomas Winkler To: gregkh@linuxfoundation.org Cc: arnd@arndb.de, rjw@rjwysocki.net, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Tomas Winkler , Alexander Usyskin Subject: [char-misc-next 03/13] mei: me: add power gating isolation register write wrappers Date: Tue, 18 Mar 2014 22:51:57 +0200 Message-Id: <1395175927-10562-4-git-send-email-tomas.winkler@intel.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1395175927-10562-1-git-send-email-tomas.winkler@intel.com> References: <1395175927-10562-1-git-send-email-tomas.winkler@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add entry and exit power gating isolation register write handler. Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/hw-me.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 8dbdaae..fc5d001 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -431,6 +431,35 @@ static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer, } /** + * mei_me_pg_enter - write pg enter register to mei device. + * + * @dev: the device structure + */ +static void mei_me_pg_enter(struct mei_device *dev) +{ + struct mei_me_hw *hw = to_me_hw(dev); + u32 reg = mei_me_reg_read(hw, H_HPG_CSR); + reg |= H_HPG_CSR_PGI; + mei_me_reg_write(hw, H_HPG_CSR, reg); +} + +/** + * mei_me_pg_enter - write pg enter register to mei device. + * + * @dev: the device structure + */ +static void mei_me_pg_exit(struct mei_device *dev) +{ + struct mei_me_hw *hw = to_me_hw(dev); + u32 reg = mei_me_reg_read(hw, H_HPG_CSR); + + WARN(!(reg & H_HPG_CSR_PGI), "PGI is not set\n"); + + reg |= H_HPG_CSR_PGIHEXR; + mei_me_reg_write(hw, H_HPG_CSR, reg); +} + +/** * mei_me_irq_quick_handler - The ISR of the MEI device * * @irq: The irq number -- 1.8.5.3