diff options
Diffstat (limited to 'drivers/video/omap2/dss/hdmi_panel.c')
| -rw-r--r-- | drivers/video/omap2/dss/hdmi_panel.c | 414 |
1 files changed, 0 insertions, 414 deletions
diff --git a/drivers/video/omap2/dss/hdmi_panel.c b/drivers/video/omap2/dss/hdmi_panel.c deleted file mode 100644 index dfb8eda81b61..000000000000 --- a/drivers/video/omap2/dss/hdmi_panel.c +++ /dev/null @@ -1,414 +0,0 @@ -/* - * hdmi_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 <mythripk@ti.com> - * - * 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 <http://www.gnu.org/licenses/>. - */ - -#include <linux/kernel.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/mutex.h> -#include <linux/module.h> -#include <video/omapdss.h> -#include <linux/slab.h> - -#include "dss.h" - -static struct { - /* This protects the panel ops, mainly when accessing the HDMI IP. */ - struct mutex lock; -#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) - /* This protects the audio ops, specifically. */ - spinlock_t audio_lock; -#endif -} hdmi; - - -static int hdmi_panel_probe(struct omap_dss_device *dssdev) -{ - /* Initialize default timings to VGA in DVI mode */ - const struct omap_video_timings default_timings = { - .x_res = 640, - .y_res = 480, - .pixel_clock = 25175, - .hsw = 96, - .hfp = 16, - .hbp = 48, - .vsw = 2, - .vfp = 11, - .vbp = 31, - - .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, - .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, - - .interlace = false, - }; - - DSSDBG("ENTER hdmi_panel_probe\n"); - - dssdev->panel.timings = default_timings; - - DSSDBG("hdmi_panel_probe x_res= %d y_res = %d\n", - dssdev->panel.timings.x_res, - dssdev->panel.timings.y_res); - - omapdss_hdmi_display_set_timing(dssdev, &dssdev->panel.timings); - - return 0; -} - -static void hdmi_panel_remove(struct omap_dss_device *dssdev) -{ - -} - -#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) -static int hdmi_panel_audio_enable(struct omap_dss_device *dssdev) -{ - unsigned long flags; - int r; - - mutex_lock(&hdmi.lock); - spin_lock_irqsave(&hdmi.audio_lock, flags); - - /* enable audio only if the display is active and supports audio */ - if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE || - !hdmi_mode_has_audio()) { - DSSERR("audio not supported or display is off\n"); - r = -EPERM; - goto err; - } - - r = hdmi_audio_enable(); - - if (!r) - dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED; - -err: - spin_unlock_irqrestore(&hdmi.audio_lock, flags); - mutex_unlock(&hdmi.lock); - return r; -} - -static void hdmi_panel_audio_disable(struct omap_dss_device *dssdev) -{ - unsigned long flags; - - spin_lock_irqsave(&hdmi.audio_lock, flags); - - hdmi_audio_disable(); - - dssdev->audio_state = OMAP_DSS_AUDIO_DISABLED; - - spin_unlock_irqrestore(&hdmi.audio_lock, flags); -} - -static int hdmi_panel_audio_start(struct omap_dss_device *dssdev) -{ - unsigned long flags; - int r; - - spin_lock_irqsave(&hdmi.audio_lock, flags); - /* - * No need to check the panel state. It was checked when trasitioning - * to AUDIO_ENABLED. - */ - if (dssdev->audio_state != OMAP_DSS_AUDIO_ENABLED) { - DSSERR("audio start from invalid state\n"); - r = -EPERM; - goto err; - } - - r = hdmi_audio_start(); - - if (!r) - dssdev->audio_state = OMAP_DSS_AUDIO_PLAYING; - -err: - spin_unlock_irqrestore(&hdmi.audio_lock, flags); - return r; -} - -static void hdmi_panel_audio_stop(struct omap_dss_device *dssdev) -{ - unsigned long flags; - - spin_lock_irqsave(&hdmi.audio_lock, flags); - - hdmi_audio_stop(); - dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED; - - spin_unlock_irqrestore(&hdmi.audio_lock, flags); -} - -static bool hdmi_panel_audio_supported(struct omap_dss_device *dssdev) -{ - bool r = false; - - mutex_lock(&hdmi.lock); - - if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) - goto err; - - if (!hdmi_mode_has_audio()) - goto err; - - r = true; -err: - mutex_unlock(&hdmi.lock); - return r; -} - -static int hdmi_panel_audio_config(struct omap_dss_device *dssdev, - struct omap_dss_audio *audio) -{ - unsigned long flags; - int r; - - mutex_lock(&hdmi.lock); - spin_lock_irqsave(&hdmi.audio_lock, flags); - - /* config audio only if the display is active and supports audio */ - if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE || - !hdmi_mode_has_audio()) { - DSSERR("audio not supported or display is off\n"); - r = -EPERM; - goto err; - } - - r = hdmi_audio_config(audio); - - if (!r) - dssdev->audio_state = OMAP_DSS_AUDIO_CONFIGURED; - -err: - spin_unlock_irqrestore(&hdmi.audio_lock, flags); - mutex_unlock(&hdmi.lock); - return r; -} - -#else -static int hdmi_panel_audio_enable(struct omap_dss_device *dssdev) -{ - return -EPERM; -} - -static void hdmi_panel_audio_disable(struct omap_dss_device *dssdev) -{ -} - -static int hdmi_panel_audio_start(struct omap_dss_device *dssdev) -{ - return -EPERM; -} - -static void hdmi_panel_audio_stop(struct omap_dss_device *dssdev) -{ -} - -static bool hdmi_panel_audio_supported(struct omap_dss_device *dssdev) -{ - return false; -} - -static int hdmi_panel_audio_config(struct omap_dss_device *dssdev, - struct omap_dss_audio *audio) -{ - return -EPERM; -} -#endif - -static int hdmi_panel_enable(struct omap_dss_device *dssdev) -{ - int r = 0; - DSSDBG("ENTER hdmi_panel_enable\n"); - - mutex_lock(&hdmi.lock); - - if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) { - r = -EINVAL; - goto err; - } - - omapdss_hdmi_display_set_timing(dssdev, &dssdev->panel.timings); - - 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.lock); - - return r; -} - -static void hdmi_panel_disable(struct omap_dss_device *dssdev) -{ - mutex_lock(&hdmi.lock); - - if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) { - /* - * TODO: notify audio users that the display was disabled. For - * now, disable audio locally to not break our audio state - * machine. - */ - hdmi_panel_audio_disable(dssdev); - omapdss_hdmi_display_disable(dssdev); - } - - dssdev->state = OMAP_DSS_DISPLAY_DISABLED; - - mutex_unlock(&hdmi.lock); -} - -static void hdmi_get_timings(struct omap_dss_device *dssdev, - struct omap_video_timings *timings) -{ - mutex_lock(&hdmi.lock); - - *timings = dssdev->panel.timings; - - mutex_unlock(&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.lock); - - /* - * TODO: notify audio users that there was a timings change. For - * now, disable audio locally to not break our audio state machine. - */ - hdmi_panel_audio_disable(dssdev); - - omapdss_hdmi_display_set_timing(dssdev, timings); - dssdev->panel.timings = *timings; - - mutex_unlock(&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.lock); - - r = omapdss_hdmi_display_check_timing(dssdev, timings); - - mutex_unlock(&hdmi.lock); - return r; -} - -static int hdmi_read_edid(struct omap_dss_device *dssdev, u8 *buf, int len) -{ - int r; - bool need_enable; - - mutex_lock(&hdmi.lock); - - need_enable = dssdev->state == OMAP_DSS_DISPLAY_DISABLED; - - if (need_enable) { - r = omapdss_hdmi_core_enable(dssdev); - if (r) - goto err; - } - - r = omapdss_hdmi_read_edid(buf, len); - - if (need_enable) - omapdss_hdmi_core_disable(dssdev); -err: - mutex_unlock(&hdmi.lock); - - return r; -} - -static bool hdmi_detect(struct omap_dss_device *dssdev) -{ - int r; - bool need_enable; - - mutex_lock(&hdmi.lock); - - need_enable = dssdev->state == OMAP_DSS_DISPLAY_DISABLED; - - if (need_enable) { - r = omapdss_hdmi_core_enable(dssdev); - if (r) - goto err; - } - - r = omapdss_hdmi_detect(); - - if (need_enable) - omapdss_hdmi_core_disable(dssdev); -err: - mutex_unlock(&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, - .get_timings = hdmi_get_timings, - .set_timings = hdmi_set_timings, - .check_timings = hdmi_check_timings, - .read_edid = hdmi_read_edid, - .detect = hdmi_detect, - .audio_enable = hdmi_panel_audio_enable, - .audio_disable = hdmi_panel_audio_disable, - .audio_start = hdmi_panel_audio_start, - .audio_stop = hdmi_panel_audio_stop, - .audio_supported = hdmi_panel_audio_supported, - .audio_config = hdmi_panel_audio_config, - .driver = { - .name = "hdmi_panel", - .owner = THIS_MODULE, - }, -}; - -int hdmi_panel_init(void) -{ - mutex_init(&hdmi.lock); - -#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) - spin_lock_init(&hdmi.audio_lock); -#endif - - return omap_dss_register_driver(&hdmi_driver); -} - -void hdmi_panel_exit(void) -{ - omap_dss_unregister_driver(&hdmi_driver); - -} |