From patchwork Fri Mar 4 07:48:24 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: 607921 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 p247mqOp006880 for ; Fri, 4 Mar 2011 07:49:03 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758931Ab1CDHss (ORCPT ); Fri, 4 Mar 2011 02:48:48 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:59408 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758687Ab1CDHsr (ORCPT ); Fri, 4 Mar 2011 02:48:47 -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 p247miuT008055 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 4 Mar 2011 01:48:46 -0600 Received: from localhost.localdomain (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id p247mTtw023966; Fri, 4 Mar 2011 13:18:41 +0530 (IST) From: Mythri P K To: linux-omap@vger.kernel.org, tomi.valkeinen@ti.com Cc: Mythri P K Subject: [PATCH v3 6/9] OMAP4 : DSS2 : HDMI: HDMI panel driver addition in the DSS Date: Fri, 4 Mar 2011 13:18:24 +0530 Message-Id: <1299224907-11354-7-git-send-email-mythripk@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1299224907-11354-1-git-send-email-mythripk@ti.com> References: <1299224907-11354-1-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]); Fri, 04 Mar 2011 07:49:03 +0000 (UTC) diff --git a/drivers/video/omap2/dss/Kconfig b/drivers/video/omap2/dss/Kconfig index 7749ddb..7bac3b8 100644 --- a/drivers/video/omap2/dss/Kconfig +++ b/drivers/video/omap2/dss/Kconfig @@ -125,4 +125,12 @@ config OMAP2_DSS_MIN_FCK_PER_PCK Max FCK is 173MHz, so this doesn't work if your PCK is very high. +config OMAP4_PANEL_HDMI + tristate "HDMI panel support" + depends on OMAP2_DSS_HDMI + default n + help + HDMI panel. This adds the High Definition Multimedia panel. + See http://www.hdmi.org/ for HDMI specification. + endif diff --git a/drivers/video/omap2/dss/Makefile b/drivers/video/omap2/dss/Makefile index 5998b69..95234d4 100644 --- a/drivers/video/omap2/dss/Makefile +++ b/drivers/video/omap2/dss/Makefile @@ -6,3 +6,4 @@ omapdss-$(CONFIG_OMAP2_DSS_VENC) += venc.o omapdss-$(CONFIG_OMAP2_DSS_SDI) += sdi.o omapdss-$(CONFIG_OMAP2_DSS_DSI) += dsi.o omapdss-$(CONFIG_OMAP2_DSS_HDMI) += hdmi.o +obj-$(CONFIG_OMAP4_PANEL_HDMI) += hdmi_omap4_panel.o 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..187c013 --- /dev/null +++ b/drivers/video/omap2/dss/hdmi_omap4_panel.c @@ -0,0 +1,206 @@ +/* + * hdmi_omap4_panel.c + * + * HDMI library support functions for TI OMAP4 processors. + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/ + * Authors: MythriPk + * + * 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 1920 * 1080 + * 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 = 1920; + dssdev->panel.timings.y_res = 1080; + + 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_DISABLED || + dssdev->state == OMAP_DSS_DISPLAY_SUSPENDED) { + 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_ACTIVE) { + 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_enable(dssdev); + } + + mutex_unlock(&hdmi.hdmi_lock); +} + +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, + .driver = { + .name = "hdmi_panel", + .owner = THIS_MODULE, + }, +}; + +static int __init hdmi_panel_init(void) +{ + mutex_init(&hdmi.hdmi_lock); + + omap_dss_register_driver(&hdmi_driver); + + return 0; +} + +static void __exit hdmi_panel_exit(void) +{ + omap_dss_unregister_driver(&hdmi_driver); + +} + +module_init(hdmi_panel_init); +module_exit(hdmi_panel_exit);