From patchwork Wed Apr 29 14:00:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shobhit Kumar X-Patchwork-Id: 466062 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 9BA9914032B for ; Thu, 30 Apr 2015 00:00:47 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966091AbbD2OAp (ORCPT ); Wed, 29 Apr 2015 10:00:45 -0400 Received: from mga14.intel.com ([192.55.52.115]:37080 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423170AbbD2OAl (ORCPT ); Wed, 29 Apr 2015 10:00:41 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga103.fm.intel.com with ESMTP; 29 Apr 2015 07:00:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,671,1422950400"; d="scan'208";a="717791056" Received: from sanandax-mobl.iind.intel.com (HELO skumar40-ivm.gar.corp.intel.com) ([10.223.178.100]) by fmsmga002.fm.intel.com with ESMTP; 29 Apr 2015 07:00:34 -0700 From: Shobhit Kumar To: intel-gfx , linux-kernel , linux-gpio , linux-pwm , dri-devel Cc: Linus Walleij , Alexandre Courbot , Daniel Vetter , David Airlie , Samuel Ortiz , Thierry Reding , Jani Nikula , Lee Jones , Povilas Staniulis , Chih-Wei Huang , Shobhit Kumar Subject: [PATCH 3/8] drivers/mfd: Add lookup table for Panel Control as GPIO signal Date: Wed, 29 Apr 2015 19:30:00 +0530 Message-Id: <1430316005-16480-4-git-send-email-shobhit.kumar@intel.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1430316005-16480-1-git-send-email-shobhit.kumar@intel.com> References: <1430316005-16480-1-git-send-email-shobhit.kumar@intel.com> Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org On some Intel SoC platforms, the panel enable/disable signals are controlled by CRC PMIC. Add those control as a new GPIO in a lookup table for gpio-crystalcove chip during CRC driver load v2: Make the lookup table static (Thierry) Remove the lookup table during driver remove (Thierry) CC: Samuel Ortiz Cc: Linus Walleij Cc: Alexandre Courbot Cc: Thierry Reding Signed-off-by: Shobhit Kumar Acked-by: Linus Walleij --- drivers/mfd/intel_soc_pmic_core.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c index 7b50b6b..f3d918e 100644 --- a/drivers/mfd/intel_soc_pmic_core.c +++ b/drivers/mfd/intel_soc_pmic_core.c @@ -24,8 +24,19 @@ #include #include #include +#include #include "intel_soc_pmic_core.h" +/* Lookup table for the Panel Enable/Disable line as GPIO signals */ +static struct gpiod_lookup_table panel_gpio_table = { + /* Intel GFX is consumer */ + .dev_id = "0000:00:02.0", + .table = { + /* Panel EN/DISABLE */ + GPIO_LOOKUP("gpio_crystalcove", 94, "panel", GPIO_ACTIVE_HIGH), + }, +}; + static int intel_soc_pmic_find_gpio_irq(struct device *dev) { struct gpio_desc *desc; @@ -85,6 +96,9 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c, if (ret) dev_warn(dev, "Can't enable IRQ as wake source: %d\n", ret); + /* Add lookup table binding for Panel Control to the GPIO Chip */ + gpiod_add_lookup_table(&panel_gpio_table); + ret = mfd_add_devices(dev, -1, config->cell_dev, config->n_cell_devs, NULL, 0, regmap_irq_get_domain(pmic->irq_chip_data)); @@ -104,6 +118,9 @@ static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c) regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data); + /* Remove lookup table for Panel Control from the GPIO Chip */ + gpiod_remove_lookup_table(&panel_gpio_table); + mfd_remove_devices(&i2c->dev); return 0;