From patchwork Thu Dec 6 13:47:03 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 10716057 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 583A913AF for ; Thu, 6 Dec 2018 13:47:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 41C332B2A5 for ; Thu, 6 Dec 2018 13:47:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 352BB2EA13; Thu, 6 Dec 2018 13:47:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B20D62CCA7 for ; Thu, 6 Dec 2018 13:47:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727943AbeLFNrK (ORCPT ); Thu, 6 Dec 2018 08:47:10 -0500 Received: from mx1.redhat.com ([209.132.183.28]:36250 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727704AbeLFNrK (ORCPT ); Thu, 6 Dec 2018 08:47:10 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A82CF30842AA; Thu, 6 Dec 2018 13:47:09 +0000 (UTC) Received: from shalem.localdomain.com (ovpn-116-76.ams2.redhat.com [10.36.116.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6D06D5D777; Thu, 6 Dec 2018 13:47:07 +0000 (UTC) From: Hans de Goede To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , "Rafael J . Wysocki" , Len Brown , Andy Shevchenko , Mika Westerberg Cc: Hans de Goede , intel-gfx , dri-devel@lists.freedesktop.org, linux-acpi@vger.kernel.org Subject: [PATCH v2 1/3] ACPI / PMIC: Add support for executing PMIC MIPI sequence elements Date: Thu, 6 Dec 2018 14:47:03 +0100 Message-Id: <20181206134705.18554-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Thu, 06 Dec 2018 13:47:09 +0000 (UTC) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP DSI LCD panels describe an initialization sequence in the Video BIOS Tables using so called MIPI sequences. One possible element in these sequences is a PMIC specific element of 15 bytes. Although this is not really an ACPI opregion, the ACPI opregion code is the closest thing we have. We need to have support for these PMIC specific MIPI sequence elements somwhere. Since we already instantiate a special platform device for Intel PMICs for the ACPI PMIC OpRegion handler to bind to, with PMIC specific implementations of the OpRegion, the handling of MIPI sequence PMIC elements fits very well in the ACPI PMIC OpRegion code. This commit adds a new intel_soc_pmic_exec_mipi_pmic_seq_element() function, which is to be backed by a PMIC specific exec_mipi_pmic_seq_element callback. This function will be called by the i915 code to execture MIPI sequence PMIC elements. Signed-off-by: Hans de Goede --- drivers/acpi/pmic/intel_pmic.c | 25 +++++++++++++++++++++++++ drivers/acpi/pmic/intel_pmic.h | 1 + include/linux/mfd/intel_soc_pmic.h | 2 ++ 3 files changed, 28 insertions(+) diff --git a/drivers/acpi/pmic/intel_pmic.c b/drivers/acpi/pmic/intel_pmic.c index ca18e0d23df9..0d96ca08bb79 100644 --- a/drivers/acpi/pmic/intel_pmic.c +++ b/drivers/acpi/pmic/intel_pmic.c @@ -15,6 +15,7 @@ #include #include +#include #include #include #include "intel_pmic.h" @@ -36,6 +37,8 @@ struct intel_pmic_opregion { struct intel_pmic_regs_handler_ctx ctx; }; +static struct intel_pmic_opregion *intel_pmic_opregion; + static int pmic_get_reg_bit(int address, struct pmic_table *table, int count, int *reg, int *bit) { @@ -304,6 +307,7 @@ int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle, } opregion->data = d; + intel_pmic_opregion = opregion; return 0; out_remove_thermal_handler: @@ -319,3 +323,24 @@ int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle, return ret; } EXPORT_SYMBOL_GPL(intel_pmic_install_opregion_handler); + +void intel_soc_pmic_exec_mipi_pmic_seq_element(const u8 *data) +{ + struct intel_pmic_opregion_data *d; + + if (!intel_pmic_opregion) { + pr_warn("%s: No PMIC registered\n", __func__); + return; + } + + d = intel_pmic_opregion->data; + if (!d->exec_mipi_pmic_seq_element) { + pr_warn("%s: Not implemented\n", __func__); + return; + } + + mutex_lock(&intel_pmic_opregion->lock); + d->exec_mipi_pmic_seq_element(intel_pmic_opregion->regmap, data); + mutex_unlock(&intel_pmic_opregion->lock); +} +EXPORT_SYMBOL_GPL(intel_soc_pmic_exec_mipi_pmic_seq_element); diff --git a/drivers/acpi/pmic/intel_pmic.h b/drivers/acpi/pmic/intel_pmic.h index 095afc96952e..5a7bb33d046a 100644 --- a/drivers/acpi/pmic/intel_pmic.h +++ b/drivers/acpi/pmic/intel_pmic.h @@ -15,6 +15,7 @@ struct intel_pmic_opregion_data { int (*update_aux)(struct regmap *r, int reg, int raw_temp); int (*get_policy)(struct regmap *r, int reg, int bit, u64 *value); int (*update_policy)(struct regmap *r, int reg, int bit, int enable); + void (*exec_mipi_pmic_seq_element)(struct regmap *r, const u8 *data); struct pmic_table *power_table; int power_table_count; struct pmic_table *thermal_table; diff --git a/include/linux/mfd/intel_soc_pmic.h b/include/linux/mfd/intel_soc_pmic.h index ed1dfba5e5f9..ce04ad7d4b6c 100644 --- a/include/linux/mfd/intel_soc_pmic.h +++ b/include/linux/mfd/intel_soc_pmic.h @@ -26,4 +26,6 @@ struct intel_soc_pmic { struct device *dev; }; +void intel_soc_pmic_exec_mipi_pmic_seq_element(const u8 *data); + #endif /* __INTEL_SOC_PMIC_H__ */