From patchwork Thu Mar 10 10:44:14 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "K, Mythri P" X-Patchwork-Id: 624081 X-Patchwork-Delegate: tomi.valkeinen@nokia.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p2AAowjS020633 for ; Thu, 10 Mar 2011 10:51:04 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752038Ab1CJKu7 (ORCPT ); Thu, 10 Mar 2011 05:50:59 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:59385 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751807Ab1CJKu5 (ORCPT ); Thu, 10 Mar 2011 05:50:57 -0500 Received: from dbdp31.itg.ti.com ([172.24.170.98]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id p2AAosCZ029893 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 10 Mar 2011 04:50:56 -0600 Received: from localhost.localdomain (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id p2AAomuv001476; Thu, 10 Mar 2011 16:20:51 +0530 (IST) From: Mythri P K To: linux-omap@vger.kernel.org, tomi.valkeinen@ti.com Cc: Mythri P K Subject: [PATCH v5 06/10] OMAP4 : DSS2 : HDMI: HDMI panel driver addition in the DSS Date: Thu, 10 Mar 2011 16:14:14 +0530 Message-Id: <1299753858-12222-7-git-send-email-mythripk@ti.com> X-Mailer: git-send-email 1.5.6.3 In-Reply-To: <1299753858-12222-6-git-send-email-mythripk@ti.com> References: <1299753858-12222-1-git-send-email-mythripk@ti.com> <1299753858-12222-2-git-send-email-mythripk@ti.com> <1299753858-12222-3-git-send-email-mythripk@ti.com> <1299753858-12222-4-git-send-email-mythripk@ti.com> <1299753858-12222-5-git-send-email-mythripk@ti.com> <1299753858-12222-6-git-send-email-mythripk@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Thu, 10 Mar 2011 10:51:04 +0000 (UTC) diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h index 6bf923c..05ccd00 100644 --- a/drivers/video/omap2/dss/dss.h +++ b/drivers/video/omap2/dss/dss.h @@ -483,6 +483,8 @@ void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev); void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev); int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev, struct omap_video_timings *timings); +int hdmi_panel_init(void); +void hdmi_panel_exit(void); /* RFBI */ #ifdef CONFIG_OMAP2_DSS_RFBI diff --git a/drivers/video/omap2/dss/hdmi_omap4_panel.c b/drivers/video/omap2/dss/hdmi_omap4_panel.c new file mode 100644 index 0000000..ffb5de9 --- /dev/null +++ b/drivers/video/omap2/dss/hdmi_omap4_panel.c @@ -0,0 +1,222 @@ +/* + * hdmi_omap4_panel.c + * + * HDMI library support functions for TI OMAP4 processors. + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/ + * Authors: Mythri P k + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include +#include +#include +#include +#include +#include + +#include "dss.h" + +static struct { + struct mutex hdmi_lock; +} hdmi; + + +static int hdmi_panel_probe(struct omap_dss_device *dssdev) +{ + DSSDBG("ENTER hdmi_panel_probe\n"); + + dssdev->panel.config = OMAP_DSS_LCD_TFT | + OMAP_DSS_LCD_IVS | OMAP_DSS_LCD_IHS; + + /* + * Initialize the timings to 640 * 480 + * This is only for framebuffer update not for TV timing setting + * Setting TV timing will be done only on enable + */ + dssdev->panel.timings.x_res = 640; + dssdev->panel.timings.y_res = 480; + + DSSDBG("hdmi_panel_probe x_res= %d y_res = %d\n", + dssdev->panel.timings.x_res, + dssdev->panel.timings.y_res); + return 0; +} + +static void hdmi_panel_remove(struct omap_dss_device *dssdev) +{ + +} + +static int hdmi_panel_enable(struct omap_dss_device *dssdev) +{ + int r = 0; + DSSDBG("ENTER hdmi_panel_enable\n"); + + mutex_lock(&hdmi.hdmi_lock); + + if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) { + r = -EINVAL; + goto err; + } + + r = omapdss_hdmi_display_enable(dssdev); + if (r) { + DSSERR("failed to power on\n"); + goto err; + } + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + +err: + mutex_unlock(&hdmi.hdmi_lock); + + return r; +} + +static void hdmi_panel_disable(struct omap_dss_device *dssdev) +{ + mutex_lock(&hdmi.hdmi_lock); + + if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) + omapdss_hdmi_display_disable(dssdev); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; + + mutex_unlock(&hdmi.hdmi_lock); +} + +static int hdmi_panel_suspend(struct omap_dss_device *dssdev) +{ + int r = 0; + + mutex_lock(&hdmi.hdmi_lock); + + if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) { + r = -EINVAL; + goto err; + } + + dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; + + omapdss_hdmi_display_disable(dssdev); + +err: + mutex_unlock(&hdmi.hdmi_lock); + + return r; +} + +static int hdmi_panel_resume(struct omap_dss_device *dssdev) +{ + int r = 0; + + mutex_lock(&hdmi.hdmi_lock); + + if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) { + r = -EINVAL; + goto err; + } + + r = omapdss_hdmi_display_enable(dssdev); + if (r) { + DSSERR("failed to power on\n"); + goto err; + } + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + +err: + mutex_unlock(&hdmi.hdmi_lock); + + return r; +} + +static void hdmi_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + mutex_lock(&hdmi.hdmi_lock); + + *timings = dssdev->panel.timings; + + mutex_unlock(&hdmi.hdmi_lock); +} + +static void hdmi_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + DSSDBG("hdmi_set_timings\n"); + + mutex_lock(&hdmi.hdmi_lock); + + dssdev->panel.timings = *timings; + + if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) { + /* turn the hdmi off and on to get new timings to use */ + omapdss_hdmi_display_disable(dssdev); + omapdss_hdmi_display_set_timing(dssdev); + } + + mutex_unlock(&hdmi.hdmi_lock); +} + +static int hdmi_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + int r = 0; + + DSSDBG("hdmi_check_timings\n"); + + mutex_lock(&hdmi.hdmi_lock); + + r = omapdss_hdmi_display_check_timing(dssdev, timings); + if (r) { + DSSERR("Timing cannot be applied\n"); + goto err; + } +err: + mutex_unlock(&hdmi.hdmi_lock); + return r; +} + +static struct omap_dss_driver hdmi_driver = { + .probe = hdmi_panel_probe, + .remove = hdmi_panel_remove, + .enable = hdmi_panel_enable, + .disable = hdmi_panel_disable, + .suspend = hdmi_panel_suspend, + .resume = hdmi_panel_resume, + .get_timings = hdmi_get_timings, + .set_timings = hdmi_set_timings, + .check_timings = hdmi_check_timings, + .driver = { + .name = "hdmi_panel", + .owner = THIS_MODULE, + }, +}; + +int hdmi_panel_init(void) +{ + mutex_init(&hdmi.hdmi_lock); + + omap_dss_register_driver(&hdmi_driver); + + return 0; +} + +void hdmi_panel_exit(void) +{ + omap_dss_unregister_driver(&hdmi_driver); + +}