From patchwork Sun Jan 22 16:14:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 9531147 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C6D366020B for ; Sun, 22 Jan 2017 16:14:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B97CE27E22 for ; Sun, 22 Jan 2017 16:14:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AE52B27FA8; Sun, 22 Jan 2017 16:14:21 +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=-3.7 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RCVD_IN_SORBS_SPAM autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 756CA27E22 for ; Sun, 22 Jan 2017 16:14:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 814746E33B; Sun, 22 Jan 2017 16:14:20 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5AE3B6E340 for ; Sun, 22 Jan 2017 16:14:19 +0000 (UTC) Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E2A4B8553C; Sun, 22 Jan 2017 16:14:19 +0000 (UTC) Received: from shalem.localdomain.com (ovpn-116-34.ams2.redhat.com [10.36.116.34]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v0MGEBqM020584; Sun, 22 Jan 2017 11:14:18 -0500 From: Hans de Goede To: Thierry Reding , "Rafael J . Wysocki" , Len Brown Date: Sun, 22 Jan 2017 17:14:09 +0100 Message-Id: <20170122161409.21601-4-hdegoede@redhat.com> In-Reply-To: <20170122161409.21601-1-hdegoede@redhat.com> References: <20170122161409.21601-1-hdegoede@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Sun, 22 Jan 2017 16:14:19 +0000 (UTC) Cc: linux-pwm@vger.kernel.org, linux-acpi@vger.kernel.org, intel-gfx , Hans de Goede Subject: [Intel-gfx] [PATCH v2 3/3] acpi: lpss: call pwm_add_table() for bsw PWM device X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP On x86 we do not have devicetree to link the PWM controller and the display controller together. So someone needs to call pwm_add_table() to create the link, so that the i915 driver's pwm_get(dev, "pwm_backlight") call returns the lpss' pwm0. The PWM subsystem does not want to have pwm_add_table() calls directly in PWM drivers (this leads to probe ordering issues), so lets do it here since the acpi-lpss code is always builtin. Signed-off-by: Hans de Goede Acked-by: Thierry Reding --- Changes in v2: -Set new pwm_lookup module_name field in the table --- drivers/acpi/acpi_lpss.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 8ea836c..794be64 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include "internal.h" @@ -154,6 +155,17 @@ static void byt_i2c_setup(struct lpss_private_data *pdata) writel(0, pdata->mmio_base + LPSS_I2C_ENABLE); } +/* BSW PWM used for backlight control by the i915 driver */ +static struct pwm_lookup bsw_pwm_lookup[] = { + PWM_LOOKUP_MODNAME("80862288:00", 0, "0000:00:02.0", "pwm_backlight", + 0, PWM_POLARITY_NORMAL, "pwm-lpss-platform"), +}; + +static void bsw_pwm_setup(struct lpss_private_data *pdata) +{ + pwm_add_table(bsw_pwm_lookup, ARRAY_SIZE(bsw_pwm_lookup)); +} + static const struct lpss_device_desc lpt_dev_desc = { .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_LTR, .prv_offset = 0x800, @@ -191,6 +203,7 @@ static const struct lpss_device_desc byt_pwm_dev_desc = { static const struct lpss_device_desc bsw_pwm_dev_desc = { .flags = LPSS_SAVE_CTX | LPSS_NO_D3_DELAY, + .setup = bsw_pwm_setup, }; static const struct lpss_device_desc byt_uart_dev_desc = {